baber/WOPTO huggingface dataset:
Patent GB-654126-A (GB)
Title: Improvements in wide-band radio-frequency and intermediate-frequency transformers
Inventor: FEWINGS DAVID JOHN
IPC: H03H7/01
Filed: 1948-08-24
Abstract: 54,126. Transformers. MARCONI'S WIRE. LESS TELEGRAPH CO., Ltd. Aug. 24, 1948, No. 22313. [Class 38 (ii)] A high frequency transformer or coupling unit comprises two coils 1, 2 physically arranged so that the coupling between them is less than critical, a screening can 3 enclosing the coils to provide more than critical coupling between them, the can being slotted, as at 4, to reduce the coupling to the required amount. The slot may have a short circuit member 5 provided therein which may be movable along the slot so as to provide a small range of variable coupling. Alternatively two opposite walls may be slotted and a link member inserted in the two slots across the screening can which arrangement allows for a much greater range of coupling variation. In yet another embodiment the slots are omitted and the link member situated in a position so that a desired fixed coupling is obtained.
Patent GB-170423-A (GB)
Title: Apparatus for extracting water from and forming sheets from cellulose, wood pulp andthe like
IPC: D21F9/04
Filed: 1920-07-27
Abstract: 170,423. Aktiebolaget Karlstads Mekaniska Verkstad, and Wagner, R. E. July 27, 1920. Cylinder paper machines; pulp, catching and recovering; wet presses.-In pulp vats wherein cellulose, wood pulp, &c. from a container 4 are gathered on a perforated cylinder 1, one or more press rolls 8, 12, used to consolidate the pulp, are provided with peripheral grooves, notches, deep slots or the like, to facilitate the extraction of the water. The water and any particles of pulp are removed from the slots by scrapers 11 and collected in drain troughs 10.
Patent GB-1095160-A (GB)
Title: A ball screw and nut assembly
IPC: F16H25/22
Filed: 1964-12-11
Abstract: 1,095,160. Screw-and-nut gearing. SPECIALTIES DEVELOPMENT CORPORATION. Dec. 11, 1964 [Jan. 27, 1964], No. 22411/67. Divided out of 1,091,247. Heading F2Q. A ball-threaded nut 12 has ball cross-over passages 19 for single turn threads in individual cross-over elements 18, axially spaced by spacers 22, both the elements and spacers being axially movable in an axial slot 17 in the nut. The spacers 22 may have helical ribs 24 of impregnated porous, or briquetted dry lubricating material to lubricate and/or wipe the screwthread.
Patent GB-288085-A (GB)
Title: Improvements in or relating to reversing gear for positive drive transmission
IPC: F16H3/00
Filed: 1927-08-26
Abstract: 288,085. Elgie, F., and Pyle, F. T. Aug. 26, 1927. Reversing-gearing comprises a shaft 6 which swings about a shaft 4 to which it is geared so as to bring a bevel-wheel 11 secured near its free end into mesh alternatively with pinions 2 fast on another shaft 1 supported in a fixed bearing 3. The shaft 6 swings in the plane of Fig. 1, its lower end being supported in a foot-step bearing 9, Fig. 2, which swings with a pivoted arm 9'. The shaft 6 is pivoted about the shaft 4 by a bracket 5 which holds a pair 7, 8 in mesh. Reversal is effected through a pull-rod 12. The shaft 6 may hang so as to have pendular motion.
Patent GB-169943-A (GB)
Title: Improvements in the manufacture and production of tanning preparations
IPC: C14C3/08
Filed: 1920-07-03
Abstract: A tanning preparation which gives a light-coloured leather is prepared by adding a decolorizing-agent, such as chlorine, hypochlorites, oxalic acid, or formaldehyde, to the crude sulphonation product of crude anthracene, crude carbazole, anthracene waste, and the like.
Patent GB-958728-A (GB)
Title: Improvements in or relating to method of making wire braid hydraulic hose
IPC: B29C53/66
Filed: 1962-06-12
Abstract: 958,728. Wire braid hydraulic hose. LEE RUBBER & TIRE CORPORATION. June 12, 1962 [April 24, 1962], No. 22620/62. Heading F2P. A method of making and preconditioning a wire-braid-reinforced hydraulic hose comprises positioning a synthetic rubber tube 10 on a mandrel (not shown) with an inflated member thereon, positioning at least one tubular braid of high tensile steel wire 11 thereover, positioning a tubular textile anchor braid 12 over the braid 11 and positioning a synthetic rubber tubular cover over the braid 12, subjecting the resulting assembly to heat to vulcanize the rubber, removing it from the mandrel, connecting the hose to a source of air pressure and submitting it to an internal pressure of approximately 90% of its minimum burst pressure for an instant and then releasing the pressure. Fig. 1 shows the arrangement of the wires on a hose with a single wire layer 12 before stressing. Fig. 4 shows the more ordered rearrangement of the wires after submitting a bore with two wire layers 17 and 19 to the internal pressure specified.
Patent GB-585595-A (GB)
Title: Improvements in the production of protein filaments, yarns and other bodies
IPC: D01F4/00
Filed: 1945-09-03
Abstract: A protein spinning solution from which filaments which do not stick together in the wet state can be spun, comprises an alkaline solution of lactic casein to which glycerine has been added in the proportion of at least 20 per cent and not more than 50 per cent of the weight of the dry casein.  The filaments are spun into acid baths, i solubilized and treated in accordance with known methods. In an example, a spinning solution is made up from dry lactic casein 100 parts, caustic soda (sp. gr. 1.35) 23.5 parts, water 240 parts and glycerine 20 parts (all parts by weight).  The materials are mixed, allowed to mature for 24 hours and spun, a temperature of 20 DEG  C. being maintained throughout.  Specifications 467,812 and 483,731 are referred to.
Patent GB-207846-A (GB)
Title: Improvements in and relating to railway brakes
IPC: B60T15/54
Filed: 1922-08-21
Abstract: 207,846. Lomonossoff, G. V. Aug. 21, 1922. Fluid - actuated valves. - A pressurereducing valve for feeding air from the main reservoir to the train pipe in a fluidpressure braking system comprises chambers 23, 28, Fig. 3, separated by a piston 24 adapted to control the outlet 26 to the train pipe, and a chamber 30 connected to the outlet 26 by a channel 32 and separated from the chamber 28 by a valve 29. Air at main reservoir pressure entering the chamber 23, raises the piston 24 and passes through the outlet 26 until the normal working pressure is attained. When this pressure in the chamber 30 suffices to compress the spring 33 to allow the valve 29 to close under the action of its spring 35, and air passes through the aperture 27 in the piston and raises the pressure in the chamber 28 until the descent of the piston closes the outlet 26. If the train pipe pressure falls, the spring 33 opens the valve 29 to exhaust the chamber 28, so that the piston again rises until the working pressure is re-established. A pressure-maintaining valve, Fig. 7, for maintaining any desired pressure in the train pipe comprises chambers 61, 67 separated by a piston 64. The valve is connected at 66 to the main reservoir, at 68 to the train pipe, and at 62 to the driver's valve, which can be manipulated to produce and retain any desired pressure in the chamber 61. If this set pressure exceeds train pipe pressure, the piston 64 moves downwards to open a valve 65, whereby the train pipe is filled from the main reservoir until the pressures on the two sides of the piston equalize, whereas if, train pipe pressure is the higher, the piston rises and opens a valve 69, thus venting the train pipe through atmospheric ports 70 until the pressures on the two sides of the piston again equalize. The piston 64 is rendered fluid-tight by means of packing-rings 111, 112, Fig. 12, which are forced outwardly by a ring 113 expanded by a spring 114 engaging its ends, and the rings are held in place by a, spring plate 115 having grooves 116 to form a bayonet joint with projections 117 and locked in position by a spring pawl 118.
Patent GB-502088-A (GB)
Title: Improvements in or relating to auxiliary charge admission devices for internal combustion engines
IPC: F02M25/06
Filed: 1938-09-19
Abstract: 502,088. Moistening charge; extraair admission devices. CHAPMAN, P. K. Sept. 19, 1938, No. 22771/37. [Class (ii)] Moist air from the top of the radiator passes through a heated chamber 3 and a manual cock 8 to the induction pipe and a further supply of water to the chamber 3 is provided by a tank 5 and a sight drip-feed 6 : extra air is also supplied through a pipe 11, heated by contact with the exhaust manifold, and a cock 12. The chamber 3 is fixed slightly above, or in contact or integral with, the exhaust manifold and has a safety valve 3. Tt serves as a trap for condensed water, a piece of wire gauze being provided in the outlet pipe for this purpose.
Patent GB-894561-A (GB)
Title: Improvements in convertible bed-settees and like articles of furniture
Inventor: RUDLAND RONALD
IPC: A47C17/175
Filed: 1959-07-02
Abstract: 894,561. Bed-settees. SLEEPY VALLEY Ltd. Sept. 30, 1960 [July 2, 1959], No. 22800/59. Class 52(2) A bed-settee with a backrest 8 pivoted to arm rests 4 by links 9 and pivoted to seat portion 1 has arcuate guide slots 6 in the arm rests 4 engaged by trunnions or rollers at the rear of the seat 1 and rollers 3 projecting from the arm rests engage slots 2 in the seat so that as the seat is slid forward into the bed position it is tipped into a horizontal position. Branch slots 5 lock the seat in either position and a torsion spring 12 forming the pivot between seat 1 and backrest 8 assists in returning the back rest to the upright position.
Patent GB-170687-A (GB)
Title: Improvements in or relating to combustion turbines
IPC: F01K23/06
Filed: 1920-07-31
Abstract: 170,687. Boerner, A. July 31, 1920. Working-fluid supply; motor power plant. - Turbine-wheels 5 are driven by combustion products generated in a large number of small axially disposed chambers 2. These chambers are open at both ends without constriction and are covered by valve discs 6, 7 which are rotated together through reduction gearing 8 from the turbine shaft. The discs are so cut that for a short time the chambers, in the neighbourhood of an induction pipe 4a leading from a compressor 4, are open at both ends, to permit fresh combustion gases to push the residue of the burnt gases out of the chambers. The exit ends of the chambers are closed first and then the other ends, and, whilst the chambers are wholly closed, the gases are ignited by means of sparking-plugs carried by the valve disc 6. Immediately afterwards, the exit ends are opened and the gases impinge upon the turbine bladings. The burnt gases pass to exhaust by way of pipes 14. The gas turbine is enclosed in a chamber 13 partially filled with water which serves as a steam generator for a second turbine 17 on the same shaft. The steam may be superheated by the pipes 14. The exhaust from the gas turbine may be used to heat the water supplied to the chamber 13 which may be drawn from a condenser receiving the exhaust from the steam turbine. The valve discs may be driven through a variable speed gear or may be driven by a separate steam turbine. The combustion chambers and the associated valve discs may be arranged eccentrically of the turbine shaft as shown in Fig. 6, and the valves cut so that the combustion chambers which are successively opened discharge on to different radial portions of the turbine bladings.
Patent GB-733743-A (GB)
Title: Improvements in or relating to two-stroke-cycle internal combustion engines
IPC: F01M11/08
Filed: 1953-08-19
Abstract: 733,743. Two-stroke engines ; charge filtering and pumping ; lubricating spray carburetters ; valves. AMERICAN BRAKE SHOE CO. Aug. 19, 1953 [Aug. 29, 1952; Aug. 7, 1953], No. 22856/53. Classes 7(2), 7(3) and 7(6). [Also in Group XXXIV] In a two-stroke crankcase-compression engine, a filter 132, Fig. 8, rotatable with the crankshaft, prevents lubricant entrained in the crankcase gases from passing into the transfer passage 111, which, as shown, communicates with the cylinder through piston ducts 115, 116. The filter 132 comprises felt, &c. secured in the perforated rim 131 of a disc 130. In the two-cylinder spark-ignited engine shown, with crankcase compression of combustible mixture, the arrangement is duplicated, all the exhaust ports 117 delivering to a common pipe 121. The rotatable filter may take several forms. A sealing ring, as 183, Fig. 21, may be provided on the crankcase, and the felt replaced by a corrugated screen 182 or dispensed with, when the rim perforations are replaced by thin axial slots which alone provide filtering. In Fig. 22, instead of the usual piston-controlled crankcase inlet, an inlet 204 is controlled by the disc 206 of the filter 200, which disc has an arcuate valve slot and, over the extent of this slot only, has radial charge-inducing vanes. In Fig. 1 (not shown), the filter is in a cylindrical box journalled at one end about the centrally disposed entry of the transfer passage and entrained by a crankpin extension and comprises a felt &c. washer covering perforations in the wall and journalled end of the box. With diesel engines, or engines having liquid fuel drawn into the transfer passage, air is drawn into the crankcase through a piston-controlled port 243, Fig. 26, having an entry 244 provided with a filter 267 and throttle valve 245. As shown, liquid fuel is supplied to the transfer passage 268 through a jet 260 supplied via a check valve 256 from a float chamber 249 interconnected with the entry 244 by a pipe 264 for pressure equalization. In Fig. 25 (not shown) a similar arrangement but without such pressure equalization has a fuel nozzle delivering axially at the throat of a Venturi in the transfer passage proper. Lubrication. In Fig. 8, under the action of crankcase pressure variation, separate reservoirs 96 fed from sumps 89 via narrow bores 95 supply lubricant to crankcase moving parts via conduits 103 having check valves. The sumps 89 have screens 91, and crankshaft fingers 127 afford additional lubrication by splash. A pipe 211, Fig. 22, may replace the bore 95. In Fig. 18 (not shown), the lubricant from the reservoir is directed via external piping to a cylinder wall bore delivering just below a piston-controlled crankcase inlet.
Patent GB-673868-A (GB)
Title: Improvements relating to control means for liquid fuel pumps
Inventor: HARRIS THOMAS ALFRED
IPC: F02D1/00
Filed: 1949-09-05
Abstract: 673,868. Gas turbine plant. LUCAS, Ltd., J. Aug. 16,1950 [Sept. 5, 1949], No. 22918/49. Class 110(iii) [Also in Group XXIX] In a fuel supply system for jet engines, gas turbines and like prime movers in which the liquid fuel pump is controlled by a liquid-operated servomotor under the control of a separately arranged control valve e, an isolating valve o responsive to the opposed actions of the liquid fuel and atmospheric pressures is arranged between the servomotor and the control valve. The arrangement is specially suitable where one control valve controls two servomotors regulating separate pumps. If the control valve fails in the open positions, or the vent pipe associated therein fractures, the isolating valve closes or nearly closes so that the servomotor does not cut down pump delivery to the minimum, whilst at high altitudes the isolating valve is partly open to reduce the pump delivery. The servomotors each comprise a spring-loaded piston a connected to the swash-plate or other pump regulating means and a cylinder b the ends of which are connected by a restricted orifice d. The isolating valve 'comprises a plunger o subject to the pressure in the' cylinder b and abutting a yoke q. The yoke q is slidably supported by a partition r and connected to the adjacent ends of two co-axial capsules t, u. The capsule t is evacuated and the causule u is open to the atmosphere through an orifice v. The control valve e which controls a vent f from the servo-cylinders b is supported by a spring-loaded lever g carried by a diaphragm i. The lever g is acted on by an evacuated elastic capsule j exposed to atmospheric pressure and by a plunger m, subject to the action of the fuel delivery pressure plunger on a piston n. Specification 577,016, [Group XXIX], is referred to.
Patent GB-500372-A (GB)
Title: Improvements in and relating to miniature-rifle ranges
IPC: F41J13/00
Filed: 1937-08-21
Abstract: 500,372. Bullet - catchers for minia.- tureriae ranges. STREETS, W. H. Aug. 21, 1937, Nos. 22984 and 25196. [Class 20 (i)] A bullet-catcher for miniature rifle ranges comprises a cand-filled box 11, with its open end covered by a board 12 to which the target is fixed, an inwardly converging conical deflector 13, and inclined flat deflecting plates 14, 15, disposed adjacent to the small open end of the conical deflector, to deflect the bullets downwardly into the sand. In modification for multiple targets, the conical deflector is replaced by converging plates 16, 17, Fig. 3, and a reversely-inclined further deflector 18 is disposed directly below the first deflector plate 14.
Patent GB-798788-A (GB)
Title: Improvements relating to scale models for demonstration lighting installations
IPC: G09B23/18
Filed: 1955-08-10
Abstract: 798,788. Lamps for model lighting installations. CARTER, P. Aug. 10, 1956. [Aug. 10, 1955], No. 22995/55. Class 75(3) A miniature scale model for use in model lighting installations comprises a hollow column arm or the like having a base beyond which projects a screw-threaded extension with a nut for securing it to a support, the other end of the column supporting an electric lamp to which current is conveyed by a wire or wires passing through the column, the whole article from the base upwards having the external appearance of the real article, e.g. a street or railway lamp. In the form shown, a thin brass column 1 is mounted on a base by means of a foot 2 and locking nut 2 and carries at the upper end a bush 4 on which a globe 5 having a cap 6 is mounted. The lamp 7 of the single contact type is in contact with an eyelet 9 resting on an insulating disc 10 and connected to a wire 8 passing down the interior of the column the circuit being completed through the column itself.
Patent GB-479941-A (GB)
Title: Improvements in or relating to means for retaining lingerie straps or the like in position
IPC: A41F15/02
Filed: 1936-08-21
Abstract: 479,941. Device for supporting wearing- apparel. COOK, L. Aug. 21, 1936, No. 23002. [Class 141] A device for retaining lingerie straps, socks, stockings, and ,shirts in position comprises a number of folded pieces of textile material A each enclosing bristles B so that the bristles protrude beyond the textile material, the pieces of textile material A being stitched at their upper edges, and in overlapping relationship, to a backing strip D of textile material which is stitched to the lingerie strap, or to the inside of the sock or stocking, or to the inside of a trousers waistband. The bristles are secured within the pieces of textile material by adhesive and stitching. In a modification, Fig. 4, a clip E is secured to the backing strip D. and serves to attach the device to the lingerie strap or article of wearing-apparel. Specification 428,447 is referred to.
Patent GB-1430983-A (GB)
Title: Container drums oxazirino-2,3-d-s-triazolo-4,3-al
IPC: B65D8/18
Filed: 1973-05-15
Abstract: 1430983 Portable containers GPG HOLDINGS Ltd and THERMO PLASTICS Ltd 15 May 1973 [30 May 1972] 23067/73 Heading B8D [Also in Division B5] A plastics drum comprises a blow-moulded thermoplastics body part 1 having a mouthdefining upper portion of S-shaped corrugated form providing an inwardly-directed annular protuberance 3 spaced below an inwardly-directed lip 4 to define an internal annular groove 5 and an injection-moulded end closure incorporating a bunghole 16 and having external flange portions 11,12 and a skirt 7 together defining an annular recess 8, the flange portions 11 12 and the protuberance 3 respectively locating in the groove 5 and recess 8. The end closure is secured in position by inserting the closure into the mouth of the blow-moulded body part whilst the latter is still at elevated temperature, and cooling the body part so that it shrinks on to the closure. The end closure is also provided with an upper flat-topped flange 13, which facilitates stacking and which defines with the flange portion 12 a groove 9. A sealing ring is located in the groove and is sealingly compressed by the lip 4 on shrinkage of the body part. The flange portions 11, 12 are interconnected by bridging ribs 15. The two part drum construction is said to prevent variation in wall thickness and bunghole dimensions as compared to integrallymoulded drums.
Patent GB-699627-A (GB)
Title: Improvements in or relating to chairs, settees or the like
IPC: A47C7/02
Filed: 1952-09-16
Abstract: 699,627. Seats. GARRETT, W. C. Sept. 16, 1952, No. 23229/52. Class 52(ii) In a chair, settee &c. having a detachable seat the front of the seat frame is adapted to be detachably interconnected with the front rail of the chair &c. frame to prevent unintentional vertical displacement of the seat; and the rear of the seat frame coacts with the main frame to prevent forward displacement. As shown, the front rail 2 of the seat frame is provided with projections 3 adapted to enter slots 4 in the front rail 5 of chair frame and a rear transverse rail 7 is engageable with stepped portions 9 of the side rails 8 of the chair frame. A transverse rail 10 presses the rear of the seat when the latter is pressed home to its operative position.
Patent GB-837004-A (GB)
Title: Improvements relating to high-voltage electric circuit-breakers
Inventor: CHRISTIE JOHN
IPC: H01H33/18
Filed: 1956-07-27
Abstract: 837,004. Liquid-blast switches. REYROLLE & CO. Ltd., A. July 27, 1956, No. 23335/56. Addition to 756,074. Class 38 (5). In a high voltage fluidblast switch a portion 22 of the conductor 20 leading to the fixed contact 12 extends past an arc control device 13 substantially from end to end to form a current loop for producing a magnetic field tending to deflect the arc into the vents 26 of the device 13, the portion 22 being embedded within the wall of an insulating moulded tank 11 of cast resin, e.g. of the ethoxyline group.