* GB784603 (A)

Description: GB784603 (A) ? 1957-10-09

Fuel feeding apparatus for pressure burners

Description of GB784603 (A)

PATENT SPECIFICATION Date of Application and filing Complete Specification: Nov 21, 1 i No 33307/55. i f f) Application made in United States of America on Nov 30, 1954. Complete Specification Published: Oct 9, 1957. Index at acceptance:-Classes 75 ( 1), TA 2 C, TH( 1 M: 4 G); and 135, VM 2 H. International Classification:-F 06 k F 23 d. COMPLETDE SPEC It FICATION Fuel Feeding Apparatus for Pressure Burners We, ALADDIN INDUSTRIES, INCORPORATED, a corporation organised and existing under the laws of the State of Illinois, United States of America, of 705, Murfreesboro Road, Nashville, Tennessee, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: - This invention relates to new and improved fuel feeding apparatus for pressure burners of the type adapted to use liquid hydrocarbon fuel such as gasoline or kerosene, for example. In accordance with the invention a valve for a liquid fuel burner of the pressure type comprising a stationary member supported on a fuel tank, a mixing tube extending downwardly from said stationary member into said tank comprising a first tube for mixing fuel with air moving therethrough and 'a second tube around said first tube having a closed lower end, a general fuel passage in said stationary member connected to an outlet conduit formed therein, a starting fuel supply passage in communication with said first tube extending through said stationary member, an air supply passage extending from the top of said tank through said stationary member, an intermediate passage extending trough said stationary member to said second tube, a valve operating

member supported on and movable relative to said stationary member and a gasket member of resilient material disposed between said stationary member and said valve operating member is characterized in that said gasket member is p Oyvided with passages in alignment with said general fuel passage, said air passage, said intermediate passage, and said starting fuel passage, and said valve operating member is provided with recesses adapted o interconnect desired pairs' of said passages for the starting condition and the running condition of the burner land to disconnect said passages for the shut-off condition of the burner. One principal object of the invention is to lPrice 3 s 6 d l 7.JJ. provide a new land improved arrangement whereby the burner may be supplied with a mixture of air and atomized fuel for starting the burner and then may be operated with vaporized liquid fuel fed from 'the fuel tank through the generator to the burner. A further object is to provide la fuel feeding arrangement of the foregoing character which is highly effective and dependable, yet is much simpler and less expensive than prior arrangements. The invention and its operation is explained in the following description with reference to the accompanying drawings, in which: Figure 1 is an elevational sectional view of fuel feeding apparatus constituting an illustrative embodiment of the invention, the view being taken generally along la line 1-1 i Fig 3 b; Fig 2 is an enlarged cross-sectional view taken generally along a line 2-2 in Fig 1; Figs, 3 a, 3 b, and 3 c are somewhat diagrammatic fragmentary cross-isectional views taken generally along a line 3-3 in Fig 1, the views showing the apparatus in starting, running, and shutoff positions, respectively; Fig 4 is an enlarged fragmentary elevational sectional view taken generally along a line 4-4 in Fig 3 a;' Fig 5 is a fragmentary enlarged elevational view taken generally along a line 5-5 inFig 2; Fig 6 is an enlarged cross-sectional view taken generally along 'a line 6-6 an Fig 1; Figs 7, 8 and -9 are diagrammatic elevational sectional views illustrating the operation of the exemplary apparatus in starting, running, and shutoff positions, respectively. If the drawings 'are considered in greater detail, it will be seen that they illustrate, in fragmentary fashion, a pressure burner 11 having a fuel tank 12 adapted to hold gasoline, or other liquid hydrocarbon fuel, under pressure The pressure may be provided in the conventional manner, by means of a pump (not shown) adapted te supply compressed air to the upper end portion of the tank, above 784,603 Irr the body of liquid fuel It will be understood that the burner 11 includes a suitable generator tube or other structure (not shown) adapted to heat and thereby vaporize liquid hydrocarbon fuel, together

with a burner head (not shown) for burning the fuel vapor received from the generator. In order to feed fuel from the tank 12 to the vapor generator, the burner 11 is provided with fuel feeding apparatus 13, including a fuel control valve 14 provided with a valve body 15 An outlet port 16 is formed in one side of the valve body 15 to receive an outlet fuel pipe or other conduit 17, which runs to the vapor generator (not shown). Fuel is withdrawn from the tank 12 by means of a mixture tube 18 which is conneoted at its upper end 'to the valve body and is arranged with an open-mouthed lower end portion 19 extending downwardly into the tank 12 for immersion in the body of liquid fuel More specifically, the mixture tube 18 is connected to the valve body 15 by means of a hollow stem 20 having its lower end received in the upper end of the mixture tube The upper end of the stem 20 is threaded into a bore 21 formed in the lower end of the valve body 15 An axial bore or passage 22 extends through the stem 20. The mixture tube 18 is arranged to provide a mixture of air and:atomized fuel for starting the burner, before the vapor generator has reached its operating temperature To this end, the upper end portion of the mixture tube 1 '8 is filled with loosely packed wick material 23 adapted to soak up liquid fuel from the tank 12 When air is directed upwardly through the wicking 23 in the upper portion of the tube 18, the air entrains and atomizes fuel so that a mixture of fuel and air will flow outwardly into the bore 21 in the valve body 15. To afford communication between the valve body 15 and the lower end portion 19 of the mixture tube 18, the fuel feeding apparatus 13 includes a tube or conduit 24 which in this instance is in the form of a sleeve co-axially disposed around the mixture tube The sleeve 24 is spaced outwardly from the mixture tube 18 to define an annular passage 25 between the sleeve and the tube At its lower end, the sleeve 24 is closed by an inturned flange 26 soldered, welded, or otherwise secured to the mixture tube 18 Communication is afforded between the lower ends of the sleeve 24 and the mixture tube 1,8 by means of one or more ports 2 i 7 extending through the wall of the tube 18 adjacent the lower end of the sleeve 24 To connect the sleeve 24 to the valve body 15, an enlarged disk-like portion 28 is formed on the stem 20 and is received within the upper end of the sleeve 24 The enlarged portion 28 is' seated in 'a counterbore 29 formed in the valve body 15 below the bore 21 One or more passages 30 extend through the enlarged portion 2 '8 to connect the upper end of the sleeve 24 to the bore 29. As shown in Figs 1 and 4, generally longitudinal passages 31 and 32 are formed in the valve body 15 with their lower ends corn 70 municating with the bores 21 and 29, respectively Thus, the passages

31 and 32 are in communication with the upper ends of the mixture tube 18 and the sleeve 24 In addition, the valve body 15 is formed with a 75 generally longitudinal air passage 33 (Fig 4) having its lower end opening into the upper end portion of the tank 12 An outlet passage 34 extends upwardly from the outlet port 16. Provision is made for selectively controlling 80 the communication between the various passages 31-34 To this end, the valve 14 is provided with a pair of relatively movable valve members 35 and 36, the latter of which is rotatable relative to the former, in this in 85 stance It will be seen that the valve member is in the form of a soft resilient rubberlike circular disk having flat upper and lower surfaces 37 and 38 A bore 39 is formed in the upper end of the valve body 15,to receive 90 the resilient disk 35 Preferably, the resilient disk 35 is made of synthetic rubber or the like A flat end surface 40 is formed in the bore 39 to abut against the lower end surface 38 of the resilient disk 35 The passages P 5 31, 32, 33 and 34 in the valve body 15 com-. municate with the lower ends of respective vertical ports 41, 42, 43, and 44 (Fig 3 a) extending through the rubber-like disk 35. As shown, the movable valve member 36 100 is diskshaped in form and is rotatable in an enlarged counterbore 45 formed in the valve body above the bore 39 A stem 47, extending upwardly from the valve member 36, is fitted with a manually rotatable handle or lever 48 105 The valve member 36 is retained in the bore by means of a flanged collar 49 threaded over the upper end of the valve body 15 A flanged detent ring 50 is retained between the collar 49 'and the valve member 36 It will 110 be seen that the collar 49 holds the valve member 3 '6 downwardly against the rubber-like member 35, with the result that compressive forces are exerted against the opposite end surfaces 37 and 38 of the rubber-like disk 115 Accordingly, the disk 35, in addition to functioning as a valve member, forms seals with the movable valve member 36 and the valve body 15. To define starting, running and shutoff 120 positions of 'the movable valve member 36, the detent ring 50 is provided with angularly spaced detent recesses 51, 52, and 53 A movable detent member 54 is provided in the form of a ball disposed in a generally dia 125 metrical recess 55 formed in the stem 47. A spring 56 is disposed between the ball 54 and the closed end of the recess 55 to bias the ball outwardly It will be seen that the rotatable valve mern 130 784,603 784 6 O'3 3 her 36 is formed with a filat lower surface 5,7 which engages the top surface 37 of the of the rubber-like 'disk 35 In order to control communication among the various ports 4144, recesses 58 and 59 (Fig 3 a) are provided in the lower surface 57 on the movable valve member 36 In the illustrated

construction, the recess 5,8 is radially disposed 'and hence is adapted to communicate continuously with the outlet port 44, which is axially disposed in the rubber-like disk 35 It will be seen that the ports 41, 42, and 43 are angularly spaced from each other and are spaced outwardly from the axial outlet port 44 Accordingly, ithe radial recess 518 is movable into registration with the ports 41 and 42 Such registration occurs in the starting and running positions of the valve member 36, respectively, as indicated in Figs 3 a and 3 b In the shutoff position, illustrated in Fig 3 c, the radial recess 58 is out of communication with all of the ports 41-43, with the result that the outlet port 44 is shut off from any communication with the tank 12. As shown, the second recess 59 is arcuate and is disposed with its center of curvature coinciding with the axis of the rotatable valve member 36 In the starting position (Fig 3 a), the recess 59 ' bridges the ports 42 and 43 and hence provides communication between the upper end of the tank 12 and the upper end of the sleeve 24 Accordingly, air flows from the tank 12 into the sleeve 24, and thence through the ports 27 into the mixture tube 1 8 The air passes upwardly through the wicking 2 '3 in the upper end of the mixture tube, with the result that a mixture of fuel and air passes through the port 41 and the radial recess '5,8 into the outlet port 44, and thence to the outlet pipe 17 leading to the vapor generator. In the running position of the valve, as indicated in Fig 3 b, the recess 59 is out 'of communication with the ports 41 and 43 In the shutoff position, as shown in Fig 3 c, the recess 59 communicates only with the port 41, but this has no effect since there is no communication between any pair of the ports 41-44. To prevent rotation of the rubber-like disk 351 when the valve member 3:6 is operated, one or more projections 60 are formed on the lower side of the disk 35 and are received in corresponding recesses 61 ' (Fig 5) which are provided in the valve body 15 Two such projections 60 are utilized in the illustrated construction. While the operation of the 'exemplary fuel feeding apparatus 13, will be clear from the foregoing description, it may be helpful to offer a brief resume When the pressure burner is to be lighted, the pressure pump (not shown) is operated to build up air pressure in the upper portion of the tank 12 above the body of liquid fuel Then the handle 48 is rotated to move the valve member 36 to the starting position, as shown in Figs 3 a, 4, and '7, With the valve in this position, air passes upwardly from the tank through the air passage 33 into the port 43 and thence 70 through the arcuate recess 59, into the port 42 The air then passes downwardly through the passage 32 into the upper end of the sleeve 24 After being conveyed downwardly through the annular

passage 25 between the sleeve 24 75 and the mixture tube 18, the air enters the tube 18 through the ports 2 7 and passes upwardly through the wick material 23 Accordingly, fuel is mixed with the air and the mixture passes upwardly through the passages 80 22 and' 31 to the port 41, and thence through the radial recess 58 and the port 44 into the outlet passage 34 and the outlet pipe 17. Accordingly, the mixture of fuel and air is carried to the burner so as to facilitate igni 85 tion of the burner. Once the vapor generator of the burner has been heated to its normal operating temperature, it is desirable to supply liquid fuel to the burner, rather than a mixture of fuel and 90 air Accordingly, the handle 48 is rotated to move the valve member 36 to the running position, as shown in Figs 1, 3 b, and 8 In this position of the valve, liquid fuel passes upwardly through the lower end portion 19 95 of the mixture tube 18 and through the ports 217 into the sleeve 24 The upward movement of the liquid fuel is impelled by the air pressure in the tank After passing through the annular passage 25 between the sleeve 24 and 100 the mixture tube 18, the liquid fuel rises through the passages 30 and 32 and then is conveyed through the port 42 and the radial recess 58 into the outlet port 44 and the outlet pipe 17 105 When it is desired to extinguish the burner, the handle 48 is rotated to move the valve member 316 into the shutoff position as shown in Figs 3 c and 9 In this position, none of the ports 41-44 is in communication with 110 any other port Accordingly, all communication between the tank 12 and the outlet pipe 17 is cut off, with the result that the burner is positively extinguished. It will now be understood that the sleeve 115 24 serves the dual function of an air conduit during the starting phase and a liquid fuel conduit during the running phase of the burner In this way the construction of the fuel feeding apparatus is greatly simplified 120 Because of the resilience of the rubber-like disk 35, pressure is maintained between the faces 3,7 and 318 of the disk in the engaging components, consisting of the valve member 36 and the surface 40 of the valve body 125 Accordingly, the rubber-like disk 35 serves as both a valving member and a sealing member. Because of the provision of the detent elements 517, 52, 53, and 54, the starting, run 130 784760 o 3 ning, and shutoff positions of the handle 48 and valve member 36 are definitely and positively defined Accordingly, the valve 14 is positive and dependable in operation It will be apparent that the fuel feeding arrangement is low 1 in cost, yet effective in operation.

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* GB784604 (A)

Description: GB784604 (A) ? 1957-10-09

Improvements in board games

Description of GB784604 (A)

PATENT SPECIFICATION Inventor: KIENNETH 'BR'A'DF'IELD BARBER 784,604 Date of Application and filing Complete Specificaiion: Feb 15, 1956. No 4772/56. Complete Specification Published: Oct 9, 1957. Index at acceptance:-Class 132 ( 2), H 3 B. International Classification;-A 63 f. COOMPLETE,SPECIFICATION Improvements' in Board Games We, ARIEL PRODUCTIONS LIMITED, a British Company,of 23-24, Maiden Lane, London, W C 2, do hereby declare the invention, for which we pray that 'a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- The present invention provides apparatus for playing a game comprising a board presenting a map having intersecting routes representing paths, roads or the like and a plurality of starting and desination locations thereon, said routes being divided into sections, a plurality of location,cardls, tokens or the like (hereinafter for convenience referred to as location cards) usable in succession, to indicate 'at least one starting location and at least one destination location, and playing pieces each initially placeable on any one of said sections and movable thence to the or an indicated starting location and thereafter movable over a oumrney to the indicated destination location, said map being divided by grid lines, the number of grid rectangles extending in twoe mnutually perpendicular

directions between and including the indicated starting and destination points serving to determine a basic score for the journey. For example, the board may present a map as illustrated in the,accompanying drawing, whereon are shown a suitable number of well known, actual buildings or institutions, such as main, railway stations 10, theatres 11, museums and the like 12, and other buildings or sites 13 of public interest There may also be shown in the map a suitable number of fictitious points capable of serving as starting points or destination points, which are indicated by the circles numbered 14. The map, which in the example shown comprises the main roads of central London, is divided into 24 squares lettered A to F horizontally and numbered 1 to 4 vertically, by grid lines 15 At various points the road system is marked with transverse Elines 16 to divide the roads into sections These lines 'are not equally spaced but are so, located as to provide the ends of sections at points where one of the movable pieces on being stopped may desirably have ito be taken over a selected altemrnative route instead of going ahead on,e same route. In order to provide for exercise of the skill of the players, the pieces rare to be moved by each player in turn through one route section at a time in any direction and around any corner up to a section end 16, as the player may think advantageous :When playing a game with apparatus as aforesaid, basic scoring may be effected by values dependent upon the distance, between the statding and destination points, determined by referring to the number of grid squares extending in two mutually perpendicular directions between and including said points Said values rare preferably uniform. Thus for example, the basic score for a journey from Paddington:Station to London Bridge Station, as shown on' the map, is 6,,comprising live squares horizontally and one square vertically, while the basic score from Kings Cross or St Pancras Station to Victoria Station is 4, comprising one square horizontally and three squares vertically. The skill for players is further excerised in knowledge of the map 'and the locations 'of the pick-up and destination points thereon. The game may be played with the aid of pieces representing for example, taxi cabs, each player having a number of such pieces of a distinctive colour and being enabled to locate a first piece on any:selected route section, so that his skill is further involved in judging where to cruise with a view to obtaining journeys easily and quickly, and 'also in estimating the best routes to follow when undertaking journeys and avoiding hazards, as will hereinafter be described.

The location cards for indicating the starting points and destination points, may comprise separate series for each purpose, or a joint series for the two purposes, and bear the X t S. At nt, -I names of said points There may be only a single card for each such point, or a suitable plurality of cards for one or for each of a selected number of points, When each player has located a piece on the map, for example, a dealer may expose, from a shuffled pack of such a joint series of cards, three cards, the first two of which indicate starting points and,the third of which indicates a destination point. The players have thereupon to decide whether or not to move their pieces towards one or other of the starting points, by one route section at the time On the arrival of the first piece on the route section including such a starting point the corresponding starting point card is discarded and the owner of said piece takes the destination card, and thereafter proceeds,to move his piece towards the route section including the destination point. In the use of apparatus as described, any model piece in a grid square which includes a starting point reached by another piece, or in an adjacent square, may be enabled to undertake the indicated journey under a score penalty which is fixed or determined by underbidding between the players holding such pieces, after reaching the starting point. A modification of the apparatus may be provided by a further plurality of cards, tokens or the like (hereinafter for convenience called bonus cards),taken after arrival at the starting point of the piece which is to undertake the indicated journey to afford a bonus score determined by the value of a duty arbitrarily indicated by said card. For example, such bonus cards, in a game played with pieces representing taxi cabs as above described, may indicate types of passengers, andan amount receivable as a tip from such a passenger, constituting a bonus score for the journey to be undertaken Such bonus cards may, for example, be shuffled and placed in a stack face downwards, the player undertaking the journey selecting the top card of the stack before leaving the starting point. Thus, in the case of bidding between a number of players to undertake a particular journey, the extent of the bidding is not limited by the score corresponding to the distance to be txaversed, but may also take into account the chances of a bonus score afforded by the bonus card to be acquired. Further, when a starting point card is withdrawn from availability on being taken by the player undertaking the journey from said point, it is replaced by another card arbitrarily indicating another starting point.

The apparatus may further include a plurality of cards, tokens or the like (hereinafter called "hazard" cards) usable by being taken one at a time by a player on arrival of his piece at the starting point, and serving to make each journey'subject to a hazard arbitrarily indicated by the card so taken Gertain of said hazard cards may serve to impose restrictions applicable to all journeys of all pieces in play For example, these cards may indicate a road block and enable a player taking 70 the card to locate a counter or similar object at tany selected point on any of the routes shown on the map, e g a road junction, so as to close said section,to all pieces on the board, with a view to simplifying the players 75 own journey and impeding the movement of the other players' pieces The number of such restrictive hazards may be limited and each further such hazard imposed on any player may be used to replace any subsisting hazard 80 at the will of said player Thus a second player taking a hazard card indicating a, road block may impose such a block at any section of the routes selected by him and remove any block already located on the board 85 Further, certain others of said hazard cards may each afford a scoring bonus or penalty, such cards, for example, indicating additional passengers or goods to be carried, and the corresponding tips or bonus scores or penal 90 ties, or indicating mishaps with corresponding penalties. Said bonus and hazard cards are preferably capable of mixing together for being taken one at a time in succession on arrival of pieces at 95 starting locations. With ithe object of enabling a game to be played according to the aforesaid method within a reasonable time, said bonuses and penalties may be graded within a predeter 100 mined range For example, the range may extend between one and five scoring points so as to enable a number of players to score towards a predetermined total score selected as the end of the game 105 The playing pieces may comprise a plurality of mutually distinguished series (e g, series each having a distinguishing colour) so that a player is enabled to acquire for score value surrendered, preferably after attaining a pre 11 C determined score, at least one further piece for playing. It will be seen that the route sections as shown in the drawing are unequal and in playing the game according to the aforesaid method 11 M a route for an indicated journey may be selected by a player in relation to the varying numbers and sizes of sections of routes extending between the starting and destination, points 12 (

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* GB784605 (A)

Description: GB784605 (A) ? 1957-10-09

Improvements in the construction of buildings for viewing opticallyprojected images

Description of GB784605 (A)

PATENT SPECIFICATION 7 G 43905 Date of application and filing Complete Specification: March 15, 1956. No 8124156. Application made in Switzerland on March 18, 1955. Complete Specification Published: Oct 9, 1957. Ilndex at ac plannnn:-Class 20 ( 1), A( 12: 30)0 International Classification:-E 04 h, COMPLETE SPECIFICATION Impro-vements in the Construction of Buildings for Viewing Opticalhy P Lrojected Images We, MAX FRIART, of Haldenrain 6, Lucerne, Switzerland, and HERBERT KELLER, of Hirschmattstrasse 24, Lucerne, Switzerland, both Swiss Citizens, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- It has become recently customary to show television pictures in catering establishments, particularly in coffee houses, beer halls or the like However, hitherto the usual domestic television sets have been used, the small picture screen of which can be used comfortably by a few customers only When at interesting performances the public gathers in front of the receiver, the running of the catering establishment is severely disturbed thereby. There are already catering establishments in which projection plants are provided. These plants were subsequently fitted into the localities concerned,

so that on the one hand the television screen is badly visible from certain places, and on the other hand the entire cublic capacity of the locality is badly utilised as regards the number of the customers and the comfort thereof. The invention which overcomes these deficiencies, concerns a catering establishment with projection plant, particularly for television pictures. The same is characterised according to the invention by a ground floor in which the projector is arranged, by a projection screen which is raised with respect to the projector, and by an upper storey of at least three different levels stepped at least one meter with re. spect to one another and provided with chairs and tables, the projection screen being visible unhampered from every place in the audience and the middle ray of vision having at least an angle of inclination of 30 with respect to the projection screen face. In the three figures of the accompanying lPsco 35 6 d) drawing an embodiment of the invention is illustrated, in which:Fig 1 shows a longitudinal sectional elevation through the centre of the catering 5 f establishment, Fig 2 is a plan view of the ground floor, and Fig 3 a plan view of the upper storey. In the ground floor there is the entrance 55 hall (foyer) 1, from which two entrances 13 lead right and left past the projector cabin 4 wherein the projector is diagrammatically indicated Opposite these two entrances 13 there are two stairs 2 leading up to a plat W form 3 lying in front of the projector screen wall 5. The projector screen itself lies at a higher level than the projector, namely so high that the middle projection ray 14 is inclined about 65 ' with respect to the horizontal. The upper storey has threeamphitheatrical levels stepped at least one meter one above the others The first and second level are denoted 10, which are provided with bar 70 stools 15 and bar tables 16 The third level, denoted 11, is moreover provided with a long fixed table 16, small tables 17 and chairs 18 having back rests Bar stools 15 and bar tables 16 are also arranged on the ground 75 floor of the auditorium. From every point of the auditorium the projector screen is visible unhampered The middle rays of vision 19 (Fig 1) from the spectators to the centre of the projection 80 screen all have an angle of incidence exceeding 30 ' This applies also to the most unfavourable middle ray of vision which is shown in Fig 3 and denoted 19 u. Stairs 20 lead alongside the walls from the 85 platform to the three levels The walking area of a level is illuminated by screened lighting fittings 12 of any kind desired (incandescent bulbs, fluorescent tubes etc), which are arranged below the table tops of the next 90 higher level, so that the spectators are in semi-darkness Below the same

table tops P S ar'r" l I, also coat hangers may be provided, namely preferably as many coat hangers as there are seats available on the corresponding lower level. The kitchen is denoted 7 in the vicinity of which there are three lifts 8 for the food to be served at the three levels The public conveniences 9 are on that side of the entrance hall 1 which is opposite the kitchen 7. As will be seen from Figs 2 and 3 the outline of the plan of the catering establishment illustrated forms an octogon which is symmetrical about the middle projection plane (which coincides with the plane of Fig 1) but otherwise is non-equilateral Obviously this plan form may be built into any block of building of any desired e g rectangular shape the other parts of which may be utilised at will, e g as cloak rooms The outline of the plan may alternatively be elliptic or circular.

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* GB784606 (A)

Description: GB784606 (A) ? 1957-10-09

Improvements in vacuum cleaners

Description of GB784606 (A)

A high quality text as facsimile in your desired language may be available amongst the following family members:

CH338568 (A) DE1188777 (B) FR1148200 (A) US2814358 (A) CH338568 (A) DE1188777 (B) FR1148200 (A) US2814358 (A) less Translate this text into Tooltip

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The EPO does not accept any responsibility for the accuracy of data and information originating from other authorities than the EPO; in particular, the EPO does not guarantee that they are complete, up-to-date or fit for specific purposes.

PATENT SPECIFICATION 784606 '' Date of application and filing Complete Specification: April 12, 1956. No 11 131156. Application made in United States of America on Aug 31, 1955. Complete Specification Published: Oct 9, 1957. Index at acceptance:-Classes 8 ( 1), I 1 A 3 A 3, I 2 (D: J: L: X); and 8 ( 2), D 3 (E 2 A: F 2 A: X). International Classification:-A 471 B Old. COMPLETE SPECIFICATION Improvements in Vacuum Cleaners We, ELECTROLUX CORPORATION, a Corporation organized and existing under the laws of the State of Delaware, United States of America, located at Forest Avenue, Old Greenwich, State of Connecticut, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the follownig statement: - The present invention relates to vacuum cleaners and more particularly to vacuum cleaners of the type in which there is provided means responsive to the pressure drop through the dust bag for effecting an automatic control of the cleaner Such control may consist in stopping the motor, opening the front cover or both. More particularly the invention consists of a vacuum cleaner including a housing defining a compartment having an opening, a dust container insertable into and removable from said compartment through said opening, a motor fan unit for producing flow of air through said compartment and through said container therein, a closure member for said opening, an inlet passage extending through said closure member, releasable means on said closure member for securing the latter to said housing, a pneumatic device carried by said closure member for releasing said releasable means, a differential pressure diaphragm carried by said closure member, means for subjecting one side of said diaphragm to the air pressure existing in said inlet passage, means for subjecting the other side of said diaphragm to the air pressure existing within said compartment, and valve means openable by deflection of said diaphragm for communicating the air pressure existing in said compartment to said pneumatic device.

In order that the invention may be more clearly understood, reference will now be made to the accompanying drawings, wherein a specific embodiment of the invention is lPrice 3 s 6 d l shown by way of example, and wherein: Fig 1 is a cross-sectional view of a vacuum cleaner in accordance with the invention and is taken on the line 1-1 of Fig 2; 5 a Fig 2 is a front view of the front cover of the vacuum cleaner shown in Fig 1, Fig 3 is a rear view of the front cover shown in Fig 2 with a closure plate removed; Fig 4 is a top view of a portion of the 55 vacuum cleaner shown in Fig 1; Fig 5 is a cross-sectional view on an enlarged scale taken on the line 5-5 of Fig 1; Fig 6 is a cross-sectional view on an enlarged scale taken on the line 6-6 of Fig 2; 60 Fig 7 is a cross-sectional view on an enlarged scale taken on the line 7-7 of Fig 2; and Fig 8 is a cross-sectional view taken on the line 8-8 of Fig 7 65 Referring more particularly to Fig 1, reference character 10 designates generally an outer elongated airtight body A motor-fan unit comprising an electric motor 12 and a fan 14 is mounted in a bulkhead 16 disposed 70 near the right-hand end of the body 10, as viewed in Fig 1 The fan is formed with an inlet 18 which communicates with a dust bag compartment formed within the body 10 to the left of the bulkhead 16 Secured with 75 in the open end of the dust bag compartment is an inner perforated body 20. A gasket 22 of rubber or other suitable flexible material is carried by the open ends of the bodies 10 and 20 and includes a por 80 tion 24 which serves as a seat for a dust bag, as will appear hereinafter A metal rim 26 surrounds most of the gasket 22, except the portion 24 thereof Secured in any suitable manner to the bottom of the outer body 10 85 adjacent to the end carrying the rim 26 is a casting 28 in which is suitably mounted a caster 30 Casting 28 also includes a lip 32 extending forwardly of the rim 26, this lip constituting one part of a separable hinge, 90 the other part of which is designated by reference character 34 and forms part of a front 2 784,606 cover or closure 36 This cover is generally dish-shaped so as to provide a space 38 within which may be located the automatic controls An inlet conduit 40 extends through the central part of the cover 36 and the outer end of this conduit is formed as one part of a separable coupling 42, the other part of which is carried by a suction hose so that the hose may be detachably connected to the inlet conduit The space 38 is closed by a removable plate 44 having a central opening through which inlet 40 passes Secured in this opening in the plate is a resilient rubber ring 46 which provides a substantially airtight seal between the plate and the outer surface of the conduit 40. Secured to the upper surface of outer body is a channel shaped member 50 shown more particularly in Figs 1 and 8 The web portion 52 of channel 50 is extended beyond rim 26, as is clearly shown in Fig 1,

and is formed as a hook 54 Pivotally mounted at 56 in the cover 36 is a latch member 58 which is adapted to engage the hook 54 so as to retain the cover member in place when the portion 34 of the separable hinge is received within the portion 32 A spring 60 surround's the pivot 56 and urges latch 58 into latching position The upper end of the latch extends through a slot 62 formed in the front cover so as to be accessible for manual manipulation. The lower portion of the latch 58 constitutes an arm 64 which is formed with a slot having an upper wide portion 66 and a lower narrow portion 68 A pin 70 is secured to a flexible diaphragm 72 which forms one wall of a power diaphragm chamber 74 formed in the front cover The other end of the pin carries a head 76 which is of less diameter than the wider portion 66 of the slot in arm 64, but is of greater diameter than the narrower portion 68 of this slot Thus, the parts may be assembled by deforming the 4 flexible diaphragm 72 sufficiently to permit head 76 to pass through the wide upper portion 66, but the diaphragm and gravity will normally hold the pin in the lower narrow portion 68. Mounted in the front cover 36 below the inlet opening 40 and designated generally by reference character 78 is a control diaphragm mechanism This includes a casing forming a diaphragm chamber in which is disposed a flexible diaphragm 80 The space in the chamber to the right of the diaphragm, as viewed in Fig, 1, is connected to a tube 82 with an opening formed in an intermediate portion of the inlet conduit 40 (see Fig 3) A tube 84 is connected to the other side of the diaphragm chamber and extends around the inlet conduit 40 and the power diaphragm chamber 74 and terminates in an opening 86 formed near the upper edge of the plate 44 of the front cover As is shown more particularly in Fig 7, when the front cover is in place, this opening 86 is aligned with the flared end 88 of a tube 90 which is held in place between a bracket 92 extending upwardly from the front end of one of the 70 flanges of channel member 50, and a downwardly extending lip 94 on a channel member 96 which is secured to the top of the outer body 10 The tube 90 extends through an opening formed in the outer body so as to 75 communicate with the dust bag compartment therein Member 96 conceals most of channel and is made of electrical insulating material. The casing of the control member 78 in t O cludes a cylindrical portion 98 within which is movably mounted a valve body consisting of a sleeve 100 to which is securely fixed a knob 102 which has threaded engagement with the cylindrical part 98 Sleeve 100 is as formed with an internal annular shoulder forming a valve seat with which co-operates a valve member 104, which is urged into sealing contact with the seat by means of a spring 106 The valve 104 is secured to a

90 stem 108 which extends into the diaphragm chamber so as to be contacted by the diaphragm 80 if the latter is displaced to the left The diaphragm is normally urged to the right by means of a loading spring 110 95 As will be seen clearly in both Figs 1 and 2, the knob 102 is accessible from the exterior of cover 36 for manual rotation and it will be seen that rotation of the knob moves the latter along with the sleeve 100 and the valve 104 100 axially of the cylindrical portion 98 so as to vary the displacement required of the diaphragm 80 before it strikes the stem 108 A tube 112 connects the interior of cylindrical portion 98 to the interior of power diaphragm 105 chamber 74. As is shown in Fig 1, a disposable dust bag designated generally by reference character 114 is disposed within the inner body 20 This bag includes a relatively stiff cardboard disc 110 116 to which is secured a bag 118 of porous material, preferably paper The size and shape of disc 116 is such that it fits on the seat formed by the portion 24 of the gasket 22, and is formed with a central aperture 115 through which the inlet conduit 40 extends. When the front cover is in place, the resilient ring 46 bears against the central portion of the disc 116 and urges the periphery of the disc into sealing contact with the gasket por 120 tion 24. As is shown in Fig 7, the disposable dust bag 114 may be replaced by a permanent one consisting of a rigid rim 120 of metal or the like to which is secured the open mouth of a 125 cloth bag 122 Rim 120 carries a gasket consisting of a ring portion 124 and an outwardly flared portion 126 When this bag is inserted in the cleaner and the front cover is in place the ring portion 124 bears against the gasket 130 784,606 784,606 3 portion 24, while the flared portion 126 bears against the plate 44 of the front cover When the motor-fan unit is operated it produces a partial vacuum within the body 10 and consequently atmospheric pressure acts against the outer surface of the flared portion 126 so as to force it to the left into sealing contact with the plate 44, and also acts against the left-hand annular face of ring portion 124 so as to force the ring to the right and into sealing contact with the gasket portion 24 The pressure drop of the air passing through the dust bag 122 also exerts a force to the right, as viewed in Fig 7, tending to hold the ring portion 124 against the gasket portion 24. Due to the flexibility of the material of which the gasket on rim 120 is made, the flared portion 126 may be moved to the left, while the ring portion 124 is moved slightly to the right This construction enables the gasket to accommodate itself to rather wide variations in the distance between the plate 44 and the gasket portion 24, which variations are bound to occur in the mass production of the vacuum

cleaners. As previously mentioned, a channel member 96 is secured to the top of outer body 10. As is shown in Fig 1, the left-hand end of the channel member is formed with a downward extension 128 which is formed with a shoulder on the left side thereof, as viewed in Fig 1 The web 52 of channel member 50 is formed with an opening through which the projection may be inserted and if the channel 96 is thereafter moved slightly to the left, the shoulder on projection 128 will be engaged underneath the web of the channel 50 and this end of the channel 96 will thus be held securely in place. An electric switch 130 is mounted within channel member 96, as is shown in Figs 1 and 5 The switch itself is of the standard toggle type and includes a pivoted actuating arm 132 As is shown in Fig 5 the top of 4; channel 96 in the neighborhood of switch 130 is formed with three parallel slots and the arm 132 extends outwardly through the center slot The switch itself is enclosed within a switch case which includes a pair of vertical side walls 134, a bottom wall 136 and one vertical end wall 138 A switch actuating member includes a pair of vertical arms 140 joined together at the top by a connecting member 142 The vertical arms 140 extend through the two outer slots formed in the chamber member 96 and are disposed between the side walls of the channel and the side walls 134 of the switch case The lower ends of these arms are formed with cylindrical outwardly extending projections 144 which are received in recesses formed in the side walls of the channel 96 and the switch case is formed with a pair of projections 146 which, when the case is in position, retain the projections 144 in their recesses The material of which the arms 140 are made is somewhat resilient, thus permitting the arms to be deformed towards each other sufficiently for the projections 144 to pass through the outer slots in the top of channel 96 and then to snap 70 outwardly when the projections 144 are brought into alignment with the recesses in the side walls of the channel 96 Thereafter, the switch case with the switch 130 therein may be inserted between arms 140 and the 75 projection 146 thereon will assure that the projections 144 remrain in their recesses The parts are so dimensioned that the case will be retained in position between the top of the channel 96 and the top of the outer body 80 when the channel is secured in place The underside of the top portion 142 is formed with a recess or pocket 148 which is adapted to receive the end of pivoted arm 132 with a certain amount of play so that when the 85 switch actuating member is pivoted about the projections 144 it will move the switch arm 132, which is pivoted in the switch 130 ' about a different center. Extending outwardly from one of the arms 90 of the switch actuating

member is a pin 141 which, as is shown more particularly in Figs 5 and 6, enters a slot 143 formed in one end of a rod 145 This rod is slidably supported in an extension 147 on the inside of 95 channel 96 and a spring 149 urges the rod to the left The spring tends to project the lefthand end of the rod between the rim 26 and the end of channel 96 and into contact with the plate 44 of cover 36 when the latter is in 100 place When the cover is removed the spring is able to move the rod to the left and if the switch is in the "on" position, in which position pin 141 is in the dotted line position as shown in Fig 6, this movement of the rod 105 will pivot the switch actuating member again counterclockwise to the off position illustrated in Fig 6 When the rod is held in the position shown in Fig 6 by the cover member, the switch actuating member may be 110 moved back and forth between the "on" and "off" positions, the pin 141 merely moving back and forth through the slot 143. A suitable fastening means, such as a bolt extends through the channel member 96 115 adjacent to the switch and also through one end of a handle member 152 so a's to secure both the channel and the handle to the outer body 10 The channel is formed with an opening 154 through which the handle 152 120 extends so that the above mentioned end thereof may be underneath the channel, while the major portion of the channel is above it. The handle 152 is made of electrical insulating material which is also flexible 125 As is shown more particularly in Figs 1 and 4, the right-hand end of the channel member 96 is formed as a terminal block for the electrical connections The upper surface of the member 96 at this end is formed 130 784,606 4 784,606 with a serpentine groove 156 which is adapted to receive an electrical cord 158 The inner end of the groove 156 terminates in a recess 160 in which are secured a pair of terminals 162 and 164 respectively -Adjacent to each terminal the member 96 is formed with a narrow groove 166 A spring contact 168 is secured to each terminal and extends into the adjacent narrow groove The cord 158 has a pair of conductors 170 to the end of each of which is fastened a contact strip 172 These strips are disposed in the narrow grooves 166 in current carrying relationship with the spring contacts 168, the resiliency of the latter urging them into such relationship. A conductor 174 is connected to the terminal 162 and leads to the motor 12, while a conductor 176 is connected to the terminal 164 and passes underneath a portion of the channel 96 to the switch 130 Another conductor 178 leads from the switch underneath the channel and is connected to a conductor leading to the motor. A rear portion 182 of the handle 152 serves as a cover member for enclosing the grooves 156 and 166 and the recess 160 of the terminal

block These ends of both the handle and the member 96 may be enclosed within a metal case 184 which may have a projecting finger 186 for holding one of the nozzles usable with the vacuum cleaner A fastening bolt or the like 188 passes through the case 184, the end 182 of the handle 152 and the member 96 to secure them to the outer body 10. In order that the cord 158 may be spaced above the rear end of body 10 sufficiently to permit movement of a bail, to be described below, the rear straight portion of groove 156 may be inclined upwardly and the lower surface of portion 182 of the handle may be correspondingly grooved. A stamping 190 for retaining a filter 192 is secured in the right-hand end of the outer body 10, preferably by means of a press fit. Removably secured to this end of the body is a cord reel designated generally by reference character 194 This includes three stampings suitably secured together as by spot welding The first stamping 196 co-operates with the stamping 190 to hold the filter 192 therebetween Secured to stamping 196 is a stamping 198 which has an inclined flange portion and a central aperture 200 Secured to this stamping is a third stamping 202 which likewise has a flange portion and a central opening 204 The two flange portions together form a groove within which the electric cord 158 may be wound when the cleaner is not in use The central openings 200 and 204 of the stampings serve as an exhaust passage for the discharge of air from the vacuum cleaner. Secured to the lower edge of stamping 198 of the cord reel 194 is an angle member 206 which may be received in a co-operating angle member 208 secured to the bottom of outer body 10 The upper edge of stamping 198 is formed with a projecting portion 210 which may be engaged by a bail 212, the ends of 70 which are pivoted in the metal case 184 as is shown more particularly in Fig 4 Thus, if it is desired to move the cord reel in order to replace the filter 192, the bail 212 may be lifted to clear the projection 210 whereupon 75 the cord reel may be pivoted in a clockwise direction about the angle 208 until the angle 206 may be disengaged therefrom. The right-hand end of the cleaner may be supported in any suitable manner, such as by 80 a pair of wheels 214 rotatably mounted on a transverse axial 216. The above described device operates as follows: In order to first place a dust bag in the 85 cleaner, the latch 58 may be depressed manually so as to disengage it from the hook 54, whereupon the front cover may be removed entirely from the cleaner by virtue of the separable hinge 32, 34 Thereupon either a 90 paper dust bag 114, as shown in Fig 1, or a cloth dust bag 122, as shown in Fig 7, may be inserted within the inner body 20 The cover 36 is then replaced by engaging the portions 32 and 34 of the hinge and pivoting the cover 95

clockwise until latch 58 engages hook 54 If a paper bag has been placed in the machine the inlet 40 of the front cover will pass through the central opening of the cardboard disc 116 and the resilient ring 146 surround 10 o ing the inlet conduit 40 will bear against the central portion of the disc so as to hold the periphery thereof in sealing relationship with the gasket portion 24 If, on the other hand. a cloth bag has been placed in the cleaner 105 the flared portion 126 of the gasket on the bag will bear against the closure plate 44. while the ring portion 124 will bear against the gasket portion 24, as previously described, and the inlet 40 will discharge 110 directly into the open mouth of the bag 122. The motor 12 is started by pivoting the switch actuating member 142 so as to throw the switch arm 132 to the "on" position. With the front cover in place, the rod 145 is 1 l S held in the position shown in Fig 6, and hence pin 141 on the switch actuating member may move freely in slot 143 Operation of the fan causes air to be drawn in through the inlet 40, through the material of the bag 120 118 or 122, and through the holes in the inner body 20 to the inlet 18 The air discharged from the fan passes over the motor 12 and through the filter 192 and is discharged through the central openings 200 and 125 204. If a hose is connected to the inlet conduit and dust-ladened air is conveyed therethrough, the dust will be collected within the lust bag while the clean air will continue as 130 784,606

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* GB784607 (A)

Description: GB784607 (A) ? 1957-10-09

Improvements in or relating to fabricated structural elements

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The EPO does not accept any responsibility for the accuracy of data and information originating from other authorities than the EPO; in particular, the EPO does not guarantee that they are complete, up-to-date or fit for specific purposes.

PATENT SPECIFICATION 784,607 Date of filing Complete Specification: Dec 8, 1953. Application Date: Sept 8, 1952. No 22552/52. Complete Specification Published: Oct 9, 1957. Index at acceptance:-Class 140, A( 2 H: 5 E: 11 H: 16 C). International Classification:-B 63 b E 04 b. COMPLETE SPECIFICATION Improvements in or relating to Fabricated Structural Elements I, WILFRID SPENCER HOPPER of 28 River Street, Chippenham, in the County of Wiltshire, a British Subject, do hereby the invention for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: - This invention relates to fabricated structural elements such as walls. The object of this invention is mainly to overcome the difficulty of bending relatively thick walls and to provide a light structure free from any tendency to warp Accordingly it cannot be applied to walls of a metallic substance. According to this invention a method of fabricating a structural element such as a wall comprises depositing a mixture of liquid or plastic adhesive and sawdust or the like on a thin panel or lamina of non metallic substance Which is held to a curve allowing the mixture to set and adding applying or superimposing a second panel or lamina of non metallic substance thus forming a reinforcing layer between the said panels or laminas. The element may be fabricated by depositing the said adhesive and the said sawdust or the like alternately on the first panel, allowing the sawdust or the like ito be impregnated by the adhesive as the deposits are made adding the second panel and allowing the whole deposit to set in position between the panels or laminas of non metallic substance. A multiple structural element according to this invention may be

fabricated by the use of extra similar panels or laminas of non metallic substance each with similar intermediate deposits The further panels or laminas may be added at the same time 'as the fabrication of the first pair as a structural element or at a later stage. A structural element according to this invention comprises two panels or laminae of non metallic substance joined and reinforced by a deposit being a mixture of an adhesive and sawdust or the like between them or a plurality of panels or laminae may,be provided in a spaced apart relationship and joined by layers of the said mixture between them. The invention' is particularly applicable for constructing curved wooden hulls such as a ship's hull and avoids the difficulty of having to bend a relatively thick board into 'the required shape Referring to,the example of a ship's hull, the method according to this invention is applied to the construction thereof by first bending a thin, board or panel or lamina of non metallic substance ito the required outside shape of the hull or a substantial part thereof, next depositing:a layer of the sawdust and glue mixture on the said panel or lamina and covering this layer again with a thin panel or lamina of substantially the same shape as the first panel or lamina both the panels or laminae being of non metallic substance. It will be seen that it is much easier to bend the thin panels or laminae and fabricate the complete hull than to bend thick wood into the shape of the hull or small parts thereof later to be joined together.

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