baber/WOPTO huggingface dataset:
Patent GB-767579-A (GB)
Title: Improvements in or relating to variable resistors
Inventor: BELL ERNEST ALFRED DE
IPC: H01C10/32
Filed: 1954-02-11
Abstract: 767,579. Variable resistors. PLESSEY CO., Ltd. Feb. 11, 1955 [Feb. 11, 1954], No. 4031/54. Class 37. A variable resistor comprises a base on which the resistive material is supported, a non-rotary shaft is mounted in the base and serves both as a terminal and mounting for the resistor assembly, a brush carrier engages with the shaft and an open-ended cover is held in contact with the base by means of the brush carrier, the cover and carrier rotating as a single unit. Figs. 4, 5 and 6 show a variable resistor comprising a resistive track 6, composed of compressed powdered resistive material and a thermo-setting binder which is mounted in a recess 5 of a moulded insulated base 1 on which are mounted terminals 7 connected to the ends of track 6. Base 1 supports a shaft 8 which passes through aperture 2 so that faces 9 abut against recess 3 and a groove 10 engages with the vertical slot 14 in a spring metal brush carrier 11 which is bowed so that the carbon brush 17 which it carries presses against track 6. The carrier 11 engages by means of slot 14, a key 20 in an open-ended cover or knob 18, the top of the carrier being sprung into the shallow recess 22 in cover 18 whilst the bottom of the limbs 13 passes through the slot 21. Variation of the resistance is effected by rotation of cover 18 and carrier 11 which rotate as one unit on shaft 8.
Patent GB-305372-A (GB)
Title: An improved press and/or process for the manufacture of teapot spouts or like articles of pottery
IPC: B28B1/44
Filed: 1928-02-09
Abstract: 305,372. Coulter, W., and Burslem. Productions, Ltd. Feb. 9, 1928. Moulding hollow-ware ; pressing-plungers and dies.-A press for making tea-pot spouts and the like, shown in plan in Fig. 1, comprises a twopart die and hand-operated coring members. The upper part of the die is mounted slidably and is lowered on to the lower part a by pedal-mechanism. Manipulation of the handle g advances one coring die m through the medium of the pivoted sector plate j and rod k, and also advances the other die l through the pivoted plate i and rod h. The die l is hollow to permit the escape of the cored material. The meeting ends of the two coring dies interfit at l<1> to prevent the formation of a ridge at this point, while their other ends form the closures for the ends of the mould. In a modified construction the coring die m is straight and is guided to have a sliding movement relative to the shaping dies.
Patent GB-847416-A (GB)
Title: Improvements in or relating to rotary duplicating machines
IPC: B65H7/20
Filed: 1958-02-07
Abstract: 847,416. Feeding sheets to rotary duplicators. RITZERFELD, W., and RITZERFELD, G. Feb. 7, 1958 [March 8, 1957], No. 4048/58. Classes 100(1) and 100(2) In a rotary duplicating machine wherein the printing drum is arranged to be coupled to a continuously rotatable driving means, the coupling means cannot be operated if a sheet to be printed is fed with its leading edge in incorrect alignment, or if no sheet has been fed. As shown, the drum 11 is secured to a shaft 4 on which is rotatably mounted a chain-driven ratchet-wheel 1, and the drum is rotated when a release lever 5, pivoted at 6, releases a pawl 9 on the drum so that it can be urged by a spring 10 into engagement with the rotating ratchetwheel, the pawl being lifted by the lever 5 after one complete revolution of the drum. An L- shaped lever 18 is pivoted at 19 to the upper end of a pedal or hand lever 7, and to one end of a lever 17 pivoted at 16. A knuckle spring tends to urge the lever 18 clockwise so that it engages one end of a lever 21 pivoted at 22. The other end of the lever 21 is connected to the spring loaded plunger of a solenoid 20. In the energised position of the solenoid plunger, when the operating pedal 7 is depressed to initiate a printing operation, the lower end of the lever 18 cannot engage an abutment 23 on the release lever 5, and the pawl 9 is not released. When the solenoid 20 is de-energised, the lever 18 can move clockwise so that its lower arm is in alignment with the abutment 23: depression of the operating pedal 7 now causes the release lever 5 to be rocked, against the action of a spring 13, about its pivot 6 to release the pawl 9, and the printing drum 11 is driven for one revolution. The de-energisation of the solenoid 20 is caused when the front edge of a correctly registered sheet depresses two electric contacts 28, 28a which are spaced apart transversely of the machine. These contacts are mounted at 29 and their upper ends lie in circumferential grooves in an insulated feed roller 26 and are urged resiliently against a co-operating roller 27 which is electrically conductive. The roller 27 is in circuit with the solenoid 20, and the two contacts 28, 28a are arranged in parallel so that both contacts must be engaged by the front edge of a sheet to cause the solenoid to be deenergised. As described, A.C. is supplied to a transformer connected to a full-wave rectifier which supplies D.C. to the solenoid circuit.
Patent GB-556171-A (GB)
Title: Improvements in frequency divider networks, particularly for frequency or phase modulation receivers
IPC: H03C3/06
Filed: 1942-03-27
Abstract: 556,171. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 27, 1942, No. 4109. Convention date, March 29, 1941. [Class 40 (v)] A frequency divider particularly for frequency or phase modulation receivers consists in an arrangement for heterodyning the input frequency with a frequency differing therefrom by the desired sub-multiple which is obtained by frequency multiplication from the desired sub-multiple and is so arranged that no output is produced in the absence of an input frequency. The Figure shows a frequency changer 4 fed with a signal which may be 4 Mc and a local oscillation which may be 5 Mc from a circuit 40, 41. The latter is obtained from the intermediate frequency which in this case is 1 Mc by frequency multiplication in the valve 20. The valve 20 may be biased near cut-off when the amplitude of the signal is below threshold value to obviate noise in the output and the network may in addition perform the function of a limiter. U.S.A. Specifications 2,064,106 and 2,230,231 are referred to.
Patent GB-984320-A (GB)
Title: Improvements in or relating to pistons for internal combustion engines
Inventor: HEPWORTH JACK LYNDHURST
IPC: F16J1/06
Filed: 1963-02-01
Abstract: 984,320. Pistons. HEPWORTH & GRANDAGE Ltd. Dec. 19, 1963 [Feb. 1, 19631, No. 4253/63. Heading F2T. In a trunk piston having a gudgeon-pin boss 3 on the underside of the crown 2 on or adjacent the piston axis, an expansion-controlling insert 7 of a metal having a lower coefficient of expansion than that of the metal of the piston extends between the thrust faces 1a and engages the boss 3. The insert 7 is embedded at its central portion in the gudgeon-pin boss 3 and has flanges 7a at its ends embedded in locally thickened portions 1b of the piston skirt 1. Further gudgeon-pin bosses 5 are cast integral with the skirt. In a modification, Fig. 6 (not shown), the insert 7 is extended upwardly and embedded in the crown 2. In the modification shown in Fig. 10 for a piston having a skirt which is longitudinally split at 9, the ends of the insert 7 are formed by bifurcated portions 7k secured to the insert by rivets 7l. The bifurcated ends may be welded to or formed integrally with the insert as shown in Fig. 11.
Patent GB-143317-A (GB)
Title: Improvements in connection with parachutes
IPC: B64D17/70
Filed: 1919-02-20
Abstract: 143,317. Baker, F. Feb. 20, 1919. Addition to 124,677. Parachutes. - Improvements in the parachute described in the parent Specification comprise (1) a compression spring d attached to a fixed collar e and a tension spring a attached to a fixed collar c on the parachute mast, both springs acting on a sleeve b connected by arms f to the ribs y to facilitate opening of the parachute, (2) cords h connected to the ribs g and a collar i to limit the extent of opening, and (3) a cable and swivel hook k for attaching mail-bags or other loads to the parachute, so that they may be lowered to the ground.
Patent GB-688681-A (GB)
Title: Improvements in and relating to dynamoelectric machines
IPC: H02K27/02
Filed: 1949-02-16
Abstract: 688,681. Winding lay-outs. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 16, 1949 [Feb. 21, 1948], No. 4269/49. Class 35. In an A.C. machine with a multiplex main winding and a simplex auxiliary (discharge) winding connected to the same segments, the main winding turns are connected to segments separated by M-1 segments where M is the multiplicity, the auxiliary winding having D turns thereof connected across segments similarly spaced with D/M turns connected to each segment. The Figure shows the lay-out for a duplex two-turn main winding of 2/3 pitch comprising half windings 11 and 12 in the 36 slots of a 6-pole machine having 144 segments. The half windings close on alternate segments. The auxiliary winding 13 has 4/3 pitch and is of high resistance. Specifications 518,047 and 541,303 are referred to.
Patent GB-449798-A (GB)
Title: Improved vehicle suspension system
IPC: B60G21/055
Filed: 1936-02-13
Abstract: 449,798. Vehicle spring-suspensions. GENERAL MOTORS CORPORATION, Grand Boulevard, Detroit, Michigan, U.S.A. Feb. 13, 1936, No. 4387. Convention date, Feb. 14, 1935. [Class 108 (ii)] In vehicles in which the axis about which the suspended part rolls under the influence of the centrifugal force when the vehicle is cornering is inclined from one end to the other, anti-roll or stabilizing means are provided by means of which the control of rolling is borne equally by front and rear axles or the wheels carried thereby and in practice comprises such a stabilizing means mounted towards that end of the vehicle towards which the roll axis downwardly inclines. Fig. 1 shows diagrammatically the inclined roll axis of a vehicle frame the front wheels 1, 2 of which are independently sprung by transverse links or arms and the rear wheels are carried by a rigid axis sprung from the frame. The front wheels 1, 2 are carried by steering pins mounted on wheel carriers 9, 10 which are suspended on the outer ends of the upper and lower links 11, 12, 17, 18, the inner ends of the upper links 11, 17 being mounted on the spindles of shock absorbers 14, 20. A torsion bar spring 27 is mounted in rubber bush bearings 32, 33 and provided with arms 28, 29 linked by links 30, 31 to universal rubber bushings 45, 46 mounted in lugs 34, 35 on the lower links 12, 18. The torsion bar spring 27 may be mounted to the rear of the cross bearer 8.
Patent GB-558419-A (GB)
Title: Applying metallic skins to metal framework
IPC: B64C3/26
Filed: 1942-04-02
Abstract: 558,419. Aircraft framework. BUDD MANUFACTURING CO., E. G. April 2,.1942, Nos. 4442 and 4443. Convention dates, March 8, 1941, and June 18, 1941. [Class 4] [Also in Group XXII] A thin metal skin is attached to a metal frame, such as an aeroplane wing, fuselage, or other structure, by securing the skin at points spaced longitudinally of the frame and then deforming the frame in a direction to tension the skin. If the surface to be covered is flat the frame is deformed to present a hollow side over which the flat sheet is secured to the frame ends, after which the frame is forced to assume its original form. Fig. 2 shows a cross section of a wing flap in which ribs 16 are secured to a central cross member 10 and to edge pieces 24 and 28, 29. The ribs comprise vertical plates having flanges 17, 22 and the plates are strengthened at their upper endges by L-strip 18. The flat under-skin 30 is secured by deforming the frame while the ends of the sheet are spot welded to the end ribs, after which the frame is straightened and the sheet is spot-welded to the remaining ribs. and to the edge members and the bottom flanges of the cross-member 10. Fig. 8 shows the trailing portion of a wing in which the upper booms 117 of former ribs support span-wise members 120. A thin metal skin 132 is spot welded to stiffening ribs 133 while the latter are bent to present an upwardly concave surface, and the ribs are then forced to assume their final upwardly convex form by forcing down their forward and rear edges while their intermediate portions are supported by the members 120. Alternatively the skin and its stiffening ribs may be secured in position before the members 120 are secured in position, the latter being then pressed upwards against the stiffening ribs 133 and the ends of the members 120 spot welded to V-shaped members 124, 128 on the booms 117.
Patent GB-735783-A (GB)
Title: Composition for and method of removing hair and wool from animal hides and skins
IPC: C14B1/02
Filed: 1953-02-17
Abstract: 735,783. Depilatory paints. ZALCMAN, H. Feb. 17, 1953 [March 24, 1952], No. 4450/53. Class 76. A depilatory paint of the type used for dewooling sheepskins and the dehairing of other skins for application to the flesh side of skins comprises an aqueous composition free from monovalent cations made up from a source of hydroxyl ions selected from the oxides and hydroxides of calcium, strontium and barium, a source of hydrosulphide ions selected from the sulphides and hydrosulphides of calcium, magnesium, strontium, aluminium and barium, and a reserve source of hydroxyl ions, the hydrosulphide ion content being within the range equivalent to 2.0 to 23.5 per cent calcium hydrosulphide by weight of the composition, and the hydroxyl ion concentration being such that the pH is more than 12.07 and not more than 12.3. A water-soluble calcium salt may be added if necessary to depress the hydroxyl ion concentration. The composition may contain an inert filler such as kaolin, kieselguhr, talc or cereal flour. The hydroxyl ion concentration can be reduced by the addition of calcium chloride for example, or a soluble salt of a polyvalent metal which will react with lime to form a soluble calcium salt and precipitate the polyvalent metal hydroxide. Aqueous compositions. exemplified contain (i) calcium hydrosulphide and lime with barium or strontium hydroxides; (ii) calcium hydrosulphide and lime with barium or strontium sulphide; (iii) calcium hydrosulphide, barium or strontium hydroxide and a water-soluble calcium salt; (iv) barium or strontium sulphide and lime with a water-soluble calcium salt; (v) barium or strontium hydrosulphide and lime with a watersoluble calcium salt; (vi) barium or strontium hydrosulphide and barium or strontium hydroxide with a water-soluble calcium salt. Compositions (i) and (ii) are preferred. The paint compositions are suitable for depilating sheepskins at 70‹ to 80‹ F. in 24 hours, or longer in the case of hides. The hides or skins are preferably soaked and fleshed before depilation. Specifications 680,784 and 706,746 are referred to.
Patent GB-863117-A (GB)
Title: Improved process for cleaning metals
Inventor: SHAW RICHARD ELLIOTT
IPC: C23G1/19
Filed: 1957-02-08
Abstract: A process of removing rust from ferriferous articles comprises treating the articles with an aqueous solution in which the rust-removing ingredients consist of at least 7% by weight of an alkali metal hydroxide and at least 3% by weight of an organic additive.  The organic additive is one of the group consisting of trialkanolamines, inositols, polyhydroxy alcohols derived from tetroses, pentoses, hexoses and heptoses, and mono- and dicarboxylic acids derived from tetroses, pentoses, hexoses and heptoses and water soluble salts thereof; examples of such compounds are saccharic, gluconic, mucic, and tartaric acids or their sodium or potassium salts, mannitol, sorbital, or erythritol and their structural isomers.  The solution may also contain alkali metal silicates and phosphates and surface active reagents and it is stated that such solutions will remove rust, oil, grease, and paint at the same time. It is preferred to use the solution as a dip or a spray at a temperature approaching the boiling point.
Patent GB-548359-A (GB)
Title: Improvements in or relating to the manufacture of flexible materials, particularly for camouflage
IPC: F41H3/02
Filed: 1941-04-04
Abstract: 548,359. Camouflage netting. BRITISH CELLOPHANE, Ltd., HEAVEN, G. S., HEAVEN, Z., [Representative of STONE, H. S.], and JAMES. F. E. April 4, 1941, Nos. 4552 and 7282. [Class 20 (i)] Flexible camouflage material is formed of spaced strands of rope or wire or meshed fabric, and strands or meshes of glossy film or sheet material threaded in and out of the netting or woven with the strands. The glossy film may be formed as tubes of cellulosic film, plain or coloured or as flat strips and may fill the interstices of the meshwork transversely of the length or only partially fill them so that adjacent fillings are spaced apart. Bands of woven plain cellulosic material may be spaced apart in the fabric or be separated by bands of woven coloured cellulosic material to represent flowing water.
Patent GB-569370-A (GB)
Title: Improvements in apparatus for the production of wood or like fibrous pulp
IPC: D21B1/12
Filed: 1943-03-22
Abstract: 569,370. Digesters. AMERICAN DEFIBRATOR, INC. March 22, 1943, No. 4631. Convention date, June 20, 1942. [Class 64 (i)] [Also in Groups VIII and XXX] Wood chips, &c., are fed from a hopper by screw-conveyers and by a reciprocating plunger to a chamber 28 and conveyed therefrom and delivered to the inlet of a disc refiner by a succession of screw-conveyer parts 54, 56, 58, 60, 62. Steam, and, if desired, chemicals, may be introduced at 34, the chips being heaped at 96, etc., between successive conveyer parts, which results in prolonged heat treatment, the larger heaps being stirred by agitators 64. Steam pressure is maintained by the plunger, &c., at the feed end and by the use of two valves opening alternately at the outlet from the disc mill.
Patent GB-193424-A (GB)
Title: Improvements relating to producing ignition in internal combustion engines
IPC: F02B19/04
Filed: 1923-02-19
Abstract: 193,424. Porsche, F. Feb. 20, 1922, [Convention date]. Flame igniters. - An auxiliary charge of readily-inflammable fuel is ignited in a chamber X which i.s cut off as far as possible from the main combustion chamber. An extension Y on the piston may reciprocate within the chamber X, sufficient annular space being allowed around it to permit the passage of the flame from the combustion of the auxiliary charge. Mixing of the charges, it is stated, is prevented as far as possible. Reference has been directed by the Comptroller to Specifications 6674/05, 24552/06, 10855/07, 27230/10, 6413/14, 142,196, and 163,077.
Patent GB-477121-A (GB)
Title: Improvements in an automobile fuel tank
IPC: B60K15/035
Filed: 1937-02-17
Abstract: 477,121. fuel containers. FORD MOTOR CO., Ltd. Feb. 17, 1937, No. 4797. Convention date, May 16, 1936. [Class 79 (iii)] [Also in Group XXIX] A motor-vehicle fuel-tank 10 of the kind having a filler-tube 15 with a fluid-tight closure cap 23 and an air-vent within which is a check-valve which closes it when the fuel rises in the filler-tube owing to the movement of the vehicle, is provided with an air-vent tube having one portion 24 extending to the exterior of the filler-tube and a further portion 25 extending downwardly within, and at an angle to, it, the check-valve 28 being situated in the portion 25 and adapted to close the tube owing to the action upon it of centrifugal forces when the vehicle rounds a curve in one direction. In the form shown, the part 24 is substantially vertical, and the part 25 makes an angle of substantially 45‹ with it. The ball-valve 28 is retained in position by ears 26 bent inwardly from the end of the tube, in which a seating is formed by a constriction 27. When the vehicle rounds a curve sufficiently fast to throw the fuel by centrifugal action upwardly in the filler-tube, the same action causes the ball 28 to roll upwardly against the seating 27, so closing the air-vent and preventing ejection of the fuel.
Patent GB-695048-A (GB)
Title: Liquid fuel combustion apparatus
Inventor: FLEMING WILLIAM
IPC: F02C7/26
Filed: 1951-02-28
Abstract: 695,048. Generating combustion products under pressure. LUCAS (INDUSTRIES), Ltd., J. Feb. 8, 1952 [Feb. 28, 1951], No. 4819/51. Class 51(i) [Also in Group XXVI] Combustion apparatus for burning a liquid fuel such as propyl nitrate and supplying motive gas to an engine starting or other turbine comprises a fuel chamber of stepped cylindrical form having a valve controlled inlet, a combustion chamber at or in communication with the larger end of the fuel chamber; a stepped hollow piston in the fuel chamber carrying a spring loaded capsule or piston, means for compressing the spring and a fuel injection nozzle through which the fuel from the fuel chamber can be discharged into the combustion chamber. The stepped cylindrical chamber b is supplied with fuel from a tank c through a valve d. A combustion chamber e with an outlet f and scavenging valve g is situated at the larger end of the fuel chamber. A hollow stepped piston h which is open to the fuel chamber at its smaller end carries an elastic capsule i loaded by a spring j and has a passage k through which fuel is discharged through nozzle m. A slidable ram n which may be electrically operated by a solenoid is provided for compressing the capsule i and spring j. The capsule and spring are returned in the compressed condition by a claw p engaging a stem q. The claw p may be released by the core r of a solenoid s. The capsule i and spring are first compressed by the ram n and retained compressed by the claw p. After the fuel chamber b is filled with fuel the valve d is closed and the claw p released. This causes fuel to be displaced from the fuel chamber to the combustion chamber through the nozzle m. Ignition of this fuel in the combustion chamber forces the stepped piston upwards and causes more fuel to be displaced. The rate of movement of the stepped piston is controlled by the air vent u.
Patent GB-910546-A (GB)
Title: Improvements in drinking troughs and the like for livestock
IPC: A01K7/02
Filed: 1961-02-09
Abstract: 910,546. Animal drinking appliances. BECKER-PRUNTE Gm.b.H. Feb. 9, 1961 [Feb. 11, 1960; Sept. 22, 1960], No. 4844/61. Class 5(2). An animal drinking appliance comprises a trough 26 pivoted on a lever 8 pivoted at 18 on a base plate 1 and serving as a conduit through which water flows into the trough. The lever 8 is coupled by a rod 12 with the diaphragm 11 of a pump and by means of a flexible pipe with the outlet 6 of the pump. The trough is provided with a water-storage space 27 located behind a push plate 28. An animal pushing on the plate 28 causes the lever to pivot upwardly to operate the pump to draw water from the chamber 3 into chamber 5 of the pump, the trough being simultaneously tilted forwardly by means of a link member 22 so that water flows from the space 27 into the trough proper. When pressure on the plate 28 is released the trough falls under gravity the lever 8 thus operating the pump to draw water into the chamber 3 from the supply and force water from the chamber 5 into the trough. The link member 22 may be replaced by a cable or belt running over a roller at the base of the lever.