baber/WOPTO huggingface dataset:
Patent GB-297520-A (GB)
Title: A unit comprising means of improving the efficiency of small rectifying devices
IPC: H02M7/06
Filed: 1927-07-07
Abstract: 297,520. Coursey, P. R., Andrewes, H., and Dubilier Condenser Co. (1925), Ltd. July 7, 1927. Vacuum apparatus, arrangements of. - In arrangements for rectifying alternating current, e.g., for supplying wireless receiving sets from A.C. mains, in which the rectifier comprises a thermionic valve V1, the filament of the valve is supplied from the mains through a condenser C1 instead of the usual transformer. The anode circuit is connected to the mains either directly or through a transformer or auto-transformer, a shunt condenser C2 being provided for smoothing the rectified current. Switching surges due to the condenser in the filament circuit may be avoided by inserting in series with the condenser an impedance, preferably inductive in character-
Patent GB-800269-A (GB)
Title: Improvements in or relating to hammerknife assemblies and to plate members suitable for use therein
Inventor: SONMORE STANLEY VERNER
IPC: A01D34/535
Filed: 1957-06-06
Abstract: 800,269. Mowing machines. TORO MANUFACTURING CORPORATION. June 6, 1957, No. 18067/67. Class 6(3). In a grass-cutting machine of the type having freely-swinging flail-like knives 7 mounted on a rotatable polygonal shaft 9, the knives are carried in paris, by spiders S each comprising a pair of plates 8, each plate having a central polygonal aperture 12 fitting over the shaft 9 and two oppositely-extending wing portions 13, 14 one portion having an integrally formed pivot-boss 15 for a knife 7 and the other having a corresponding aperture 16 which accommodates the pivot-boss of the adjacent plate, the plates being formed with integral abutments 19 which inter-engage to leave a clearance between the plates of the spider when assembled on the shaft, thereby permitting free swinging of the knives. An integral boss 11 upstands from each plate around the central aperture and extends in the opposite direction to the pivot-boss, to space each spider from its heighbour. The entire assembly is mounted in bearings in a wheeled frame F and is driven by gearing G connected by a pully 10 to a power-source. The endspiders are held on the shaft 9 by castellated lock-washers 24 and the knives are staggered helically around the shaft.
Patent GB-1146661-A (GB)
Title: Foamed polymers
Inventor: HAGGIS GEOFFREY ARTHUR
IPC: C08G18/09
Filed: 1965-04-29
Abstract: 1,146,661. Laminates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 15 April, 1966 [29 April, 1965], No. 18116/65. Heading B5N. [Also in Division C3] A laminate is formed by laminating a rigid polymeric foam, which is characterized by the presence therein of an isocyanate ring structure, to hardboard, asbestos, plaster board or paper. The foam is prepared by forming a reaction mixture containing a simple organic polyisocyanate, a catalyst for the polymerisation of isocyanates, a blowing agent and, optionally, an amount of a hydroxy compound having a molecular weight not exceeding 300 sufficient, together with any other active hydrogen containing materials present in the reaction mixture to react with not more than 60% of the isocyanate groups initially present in the polyisocyanate (see Division C3).
Patent GB-1414675-A (GB)
Title: Reciprocating pump
IPC: F04B53/10
Filed: 1973-04-16
Abstract: 1414675 Reciprocating pumps K ITO 16 April 1973 [18 July 1972] 18129/73 Heading F1A [Also in Division F2]  A pump comprises a bucket piston 7 reciprocated in gland packings 9, 10 in a cylinder B, sealing also being provided by a diaphragm 16 or bellows defining a leakage chamber 18 connected to the pump inlet 3 by conduit 19. Lightening of packings 9, 10 is effected by a screw 4 acting through a disc 11b connected by legs 11c to a ring 11a, a lantern ring 8 separating the packings. Liquid enters the cylinder via inlet 3, piston port 6 and bucket valve 5, and is discharged via check valve 1. The piston is reciprocated by an eccentric 13 acting via strap 14 and crosshead 15.
Patent GB-686818-A (GB)
Title: A device for indicating a fault in a polyphase electrical system
IPC: H02H11/00
Filed: 1951-07-31
Abstract: 686,818. Protective arrangements; inducters. BENDIX AVIATION CORPORATION. July 31, 1951 [Aug. 7, 1950], No. 18144/51. Class 38(v) [Also in Group XXXVIII] A device for indicating a fault in a polyphase electrical system, e.g., the 3-phase supply to the rotor motor 7 of an aircraft gyro-vertical 5 (Fig. 1) comprises a 2-phase torque motor 25 rotating a shaft 13 through a sector gear 17 against a torsion coil spring 23 encircling the shaft. The windings 35, 37 of the motor 25 (Fig. 2) are energised in series with the windings 27, 29 of the gyro motor 7 to normally drive the sector gear into engagement with the stop 21 and hold the indicator flag 15 carried by shaft 13 out of sight behind wall 1. Failure of current in any leg of the gyro motor supply, or reversal of any phase, allows the spring 23 to rotate the shaft 13 anticlockwise and expose the flag 15 through window 11, while a short circuit in the gyro motor connects the motor 25 across the power source 33 so that it burns out and exposes the flag as before. In Fig. 3 (not shown) the phase windings of the indicator torque motor are connected in series with both legs of the supply to a two phase drive motor.
Patent GB-656744-A (GB)
Title: Improvements in or relating to engine starters
IPC: F02N15/06
Filed: 1948-07-06
Abstract: 656,744. Turning-gear. BENDIX AVIATION CORPORATION. July 6, 1948, No. 18175. Convention date, July 25, 1947. [Class 7(v)] [Also in Groups XXII and XXIV] Adequate lubrication of the high speed stage 50 of a multi-stage epicyclic gearing 28 is ensured by separating the stage from the others 62, 80 by a baffle 58 disposed between the housing 30 and planet carrier 52 of an engine starter in which a jaw 10 axially movable to engage an engine jaw (not shown) by a screw 16 and nut 14 is driven through a friction disc pack 22 and the three stage gearing 28 by an electric motor 26. This separation ensures that a grade of lubricant suitable for the high speed stage is not thrown into the other stages, which may have a similar baffle. Methods of fitting the baffle by pressing or springing into grooved annulus teeth 36 and the formation of an axial flexure preventing bead 60 are described in the specification. The jaw 10 is sealed by a ring 102 and restrained against rotation by a ring 104 held by a baffle 106.
Patent GB-124395-A (GB)
Title: Improvements in and relating to Life-saving Garments.
IPC: B63C9/125
Filed: 1918-11-07
Abstract: 124,395. Robinson & Cleaver, and Evans, J. J. Nov. 7, 1918. Body attachments, inflatable and buoyant. - A life-saving garment of the jacket, waistcoat, bolero, or like type is provided with a dependent casing or part-belt a containing kapok or the like b, and, preferably, also an inflatable air-tube c wrapped in the kapok. The casing normally hangs round the hips of the wearer, but, on immersion. rises or tends to rise to or towards the arm-pits. As shown, it is connected to the garment d by loops e and cords &c. f: in this case the casing turns on these connections until its lower edge is uppermost. In a modification, the loops e are free to ride up part of the length of the casing turns on these connexions until its stitched &c. to the garment, and may be connected together during wear by a strap, tape, &c., which can be unfastened when desired. The garment is preferably lined with kapok, and provided on the outside with a number of elongated, vertical pockets i, wider at the top than at the bottom, and filled with kapok. The garment may be cut away between the pockets i, and may have a breast flap k and fastening straps l, l<1>. Its lower edge may be stiffened by a whalebone or cork strip j.
Patent GB-146347-A (GB)
Title: Manufacture of solid rubber tyres
IPC: B29D30/02
Filed: 1920-07-02
Abstract: 146,347. Goodyear Tire & Rubber Co., (Assignees of Litchfield, P. W.). Sept. 21, 1918, [Convention date]. Non-metallic elastic bodies and cores. -A band tyre comprises layers 11, 12, 13 of diminishing hardness, the intermediate layer 12 extending above the flanges of the foundation band 10 so as to facilitate the laying-on of the plies of the tread portion 13.
Patent GB-576108-A (GB)
Title: Improvements in or relating to inflatable dinghies
IPC: B63B7/08
Filed: 1942-12-24
Abstract: 576,108. Inflatable dinghies. ELLIOT EQUIPMENT, Ltd., and HANN, K. G. Dec. 24, 1942, No. 18337. [Class 113 (ii)] In an inflatable dinghy, the dinghy proper is mounted on two or more spaced inflatable floats. The dinghy proper may be substantially oval with flat sides and comprise an inflatable endless tube 4 with up-turned ends 6, whilst the floats may comprise straight parallel tubes 1, the rear ends 3 of which are streamlined, and the front ends 2 of which are up-turned and pointed. The tubes 1, 4 may be inflated by a common source of pressure supply. The dinghy may include a mast 8 for one or more sails 9, 10.
Patent GB-842405-A (GB)
Title: Transparent moulding compositions
IPC: C08L9/06
Filed: 1958-06-09
Abstract: Transparent mouldable thermoplastic compositions comprise 30 to 70 parts by weight of a comolymer having a refractive index between nD25 1,5350 and nD25 1,5750 and containing in chemically combined form from 5 to 62 % by weight of a methacrylic ester of an alkanol containing 1 to 6 carbon atoms, and from 95 to 38% of at least one of styrene, vinyl xylene, ethyl vinyl benzene, vinyl toluene and a -methyl styrene, and intimately blended therewith from 70 to 30 parts by weight of a copolymer of from 25 to 70% by weight of styrene and from 75 to 30% of butadiene, which copolymer has a refractive index between nD25 1,5350 and nD25 1,5750 and within 0,004 of that of the copolymer of alkenyl aromatic hydrocarbon and methacrylic acid ester. The compositions may be prepared by heat-plastifying and mechanically working the copolymers, optionally together with lubricants, e.g. butyl stearate, white mineral oil, soya bean oil and ethyl laurate, fillers, dyes, pigments, plasticisers and stabilisers, e.g. 2, 6-di-tertiary butyl-4-methylphenol.  The methacrylic ester may be methyl, ethyl, butyl or hexyl methacrylate, and examples describe the compounding of copolymers of methyl methacrylate, meta-vinyl-toluene and para-vinyl toluene, and methyl methacrylate, styrene and a -methyl styrene.
Patent GB-627164-A (GB)
Title: Railway rail
IPC: E01B5/02
Filed: 1947-07-11
Abstract: 627,164. Railway rails and joints. POOR & CO. July 11, 1947, No. 18502. Convention date, March 22, 1940. [Class 104 (ii)] A railway rail of the T-headed type has the head fillets 1 and. lower outer corner fillets 2 made of greater radii than the corresponding fillets of a comparable standard T-rail of substantially equal cross sectional area, e.g. one made in accordance with the standards of the American Railway Engineering Association, and the radii of the lower outer corner fillets are made not less than one-half of and not greater than the radii of the head fillets. In an example the head fillets are stuck on a radius of 23/32 in. compared with the ¢ in of r1 for the standard rail, indicated by dotted lines, and the lower outer corner fillets 2 have a radius of 9/16 in. compared with the 1/16 inch of r<SP>2</SP> for the standard rail. The tops of the fillets 1 are thus disposed higher above the base of the rail than those of the standard; and the top surface of the rail is correspondingly elevated. A joint bar B employed with the rail is preferably of a type having an enlarged rounded bearing head completely filling the head fillet of the rail, and having a rounded top surface z sweeping outwardly and downwardly to avoid a sharp apex and to clear completely the bottom rounded corner 2 of the rail head. Other examples of the rail are described with fillets of various radii having the proportions stated
Patent GB-376936-A (GB)
Title: Improvements in and relating to machines for polishing sheet material
IPC: B24B7/12
Filed: 1931-06-26
Abstract: 376,936. Polishing sheet material. WEILL, S. E., 3, Hardwick Street, Clerkenwell, London. June 26, 1931, No. 18514. [Class 60.] Flat extended surfaces, polishing; gauges.-A machine for polishing sheet material is provided with a gripping device for holding the sheets while they are being polished and the frictional force of the polishing mop on a sheet during operation is arranged automatically to increase the gripping effect on the sheet. The frame carries a horizontal supporting table 2 terminating in a rearwardly inclined table 3. The work conveyer comprises end shafts 4, 5 each carrying a pair of sprockets over which run a pair of parallel endless chains 6 to which are secured transverse slats 7. The bearings of the shaft 4 are carried in adjustable brackets 11 and a jockey roller is provided at 5a. The conveyer is driven from a driving pulley 16 through spur gearing 14 and chain gearing 13. One or more gripping devices A for sheets of material B are provided on the conveyer. The mop 12, driven by a belt 29 passing over jockey pulleys 30, 31, 32, is mounted on a spindle 17 supported in a frame 19 pivoted on a shaft 20. The mop is reciprocated axially during the operation by means of a crank shaft 24 driven from the gearing 15 and connected to a bellcrank lever 22 engaging a collar 21 on the mop spindle. The weight of mop is counterbalanced by a weight 33 mounted on a lever which is connected to the frame 19 by a link 36. A screwed shaft 40 pivoted at 41 to a handlever 42 is connected to an arm 37 of the counterbalance lever and an adjustable abutment 45 determines the position of the mop. Fine adjustment of the mop position is effected by a hand-wheel 44 on the shaft 40 while by manipulating the lever D the mop may be raised. Each gripper A comprises a spindle 47 mounted in bearings 48 provided at opposite ends of one of the slats. The spindle is provided with a series of eccentric portions 49 separated by inverted bearings 50 secured to the slat and a spring tends to rotate the spindle 47 so as to grip the material, Fig. 8, between the portions 49 and the slats. In operation the mop is rotated as shown in Fig. 8 so that the frictional drag of the mop on the work tends to increase the gripping action of the parts 49. Cams 55 are arranged to depress roller arms 52 on the shaft 47 so as to release the grippers and permit the insertion of the work, and after the polishing operation is completed the grip is released by further cams 56. As the gripper approaches the mop 12 rollers 57 engage under cam plates 58 secured to the frame 19 and lift the mop clear of the gripper.
Patent GB-634161-A (GB)
Title: Mask for breathing apparatus
IPC: A62B18/00
Filed: 1946-06-20
Abstract: 634,161. Respiratory appliances. DEHN, S. G. (Diving Equipment & Supply Co., Inc.). June 20, 1946, No. 18606. [Class 81(ii)] A mask 20 for a breathing apparatus of the type in which the part covering the face is of transparent material, has a rigid front wall 38 of transparent plastic material provided with a nose receiving protuberance 45 and an integral flange 39 extending rearwardly, secured to which is an elastically deformable side wall 40 having at its outer edge an inwardly extending highly flexible thin flange 41 adapted to lie flat against the face and to be pressed thereagainst by the air pressure within the mask. An inlet port 37 (Fig. 1) mounted on one side of the mask is provided with a rubber flap valve 47 (Fig. 4) which opens on inhalation, and an outlet port 19 (Fig. 1) on the opposite side of the mask has a spring-urged check valve (not shown) which opens upon exhalation. The inlet port 37 has a manually operated rotatable valve plug actuated by a handle 48 whereby the port may be opened or closed. A manually operable relief valve 50 in the front wall of the mask provides means for relieving the pressure within the mask in the event it builds up beyond a comfortable value. Straps 42 from the top and sides of the mask are connected to a rubber ring (not shown) located at the back of the wearer's head, whereby the mask is held in position.
Patent GB-1284673-A (GB)
Title: Improvements relating to tobacco-smoke filters
Inventor: TOLMAN THOMAS WILLIAM CHARLES
IPC: A24D3/16
Filed: 1970-04-20
Abstract: 1284673 Tobacco-smoke filters BRITISHAMERICAN TOBACCO CO Ltd 19 April 1971 [20 April 1970] 18757/70 Heading A2C [Also in Division B1] A tobacco-smoke filter comprises three filter sections, (a) a mouth-end section formed of cellulose acetate, (b) upstream of this, a granular composition comprising silver permanganate and zinc oxide, as catalyst for the oxidation of carbon monoxide, and (c) upstream of the catalyst, a filter section comprising paper which has been impregnated with an aqueous solution of chloramine-T.
Patent GB-1483329-A (GB)
Title: Process for the production of diphenylamine
IPC: C07B61/00
Filed: 1976-05-07
Abstract: 1483329 Dehydrogenation catalysts BAYER AG 7 May 1976 [10 May 1975] 18882/76 Heading B1E [Also in Division C2] A catalyst composition containing Ni, Cr, Al, Cu and K 2 SO 4  is obtained by mixing a catalyst base composition containing 38.2% by wt Ni 8.9% by wt Cr, 3.2% by wt A1 and 0.2% by wt Cu with a solution of K 2 SO 4  in water, drying and grinding this mixture. To this mixture 1.5% of its weight of graphite is added and the resulting mixture shaped under a moulding pressure into cylinders which are treated for 2¢ hours at 390‹C with 100 parts by volume of H 3  per part by wt of catalyst per hour. The cylinders are then cooled, treated firstly with NH 3  and then with CO 2 , then ground and shaped together with 3% of their weight of graphite under a higher moulding pressure into cylinders again. These cylinders are then treated for 2¢ hours at 390‹C with 725 parts by volume of H 2  per part by wt of catalyst per hour, and then heat-treated for 30 hours at 100‹C in a stream of CO 2 . The resulting composition is useful in the dehydrogenation of wholly or partially hydrogenated diphenylamines to the corresponding diphenylamines.
Patent GB-648490-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K23/02
Filed: 1948-07-15
Abstract: 648,490. Exciting dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. July 15, 1948, No. 19041. Convention date, July 18, 1947. [Class 35] An armature-reaction excited dynamo has three evenly-spaced salient poles 3, 4, 5, an armature wound with a pitch of 120 degrees and a commutator engaged by three evenly-spaced brushes 7, 8, 9, of which one pair are shortcircuited at 16 and the output 20, 21 is drawn from the short-circuit connection and the remaining brush. Exciting and compounding windings are mounted on poles 3, 4, the resultant working flux produced by the armature short-circuit current being indicated at 18, 19.
Patent GB-316403-A (GB)
Title: Improvements in or relating to tank vehicles
IPC: B60P3/22
Filed: 1928-07-02
Abstract: 316,403. Blake, J. W. July 2,1928. Tank carts; tipping carts.-A tank vehicle is so mounted that the tank may be levelled on the chassis to facilitate accurate, reading of its contents and prevent chassis distortion being transmitted to the tank. The tank 0 as shown is secured to a cradle 3 which is supported from the chassis 8 by two biaxial joints one situated at the centre of the tank and the other towards the rear of the tank. The centre joint comprises a transverse axis 5 and a longitudinal axis 6 together with a screw 14 operated by a hand wheel 22 and worm gear 18, 19 to enable the tank with its cradle to be tilted sideways. The rear joint comprises similar axes 24, 25 and a screw jack 28 operated by a nut 29 bevel wheels 34, 35, shaft 36 and hand wheel 38 to tilt the tank and cradle endwise. Sight gauges and a pump are mounted on the tank and tilt with it. Tie rods are provided to lock the tank to the chassis when travelling.
Patent GB-596480-A (GB)
Title: Improvements in, and relating to, exhaust valves of internal combustion engines
IPC: F01L3/14
Filed: 1945-07-27
Abstract: 596,480. Valves. AUSTIN MOTOR CO., Ltd., and RIX, J. R. July 27, 1945, No. 19230., [Class 7 (vi)] To assist cooling, the stem of a hollow poppet exhaust valve H is made with an external diameter not less than 40 per cent. of the maximum diameter of the valve at its seat D, the hollow h in the stem, closed by a hardened steel screwed cap J, being filled with a coolant such as sodium. The stem, having relatively thin walls, slides in a bore b<2> in the water-cooled cylinder head A with no intervening guide sleeve, the large peripheral area of the stem and thin walls in close proximity to the water jacket B all contributing to increase the cooling effect. The hollow h may extend into the valve head H.
Patent GB-419351-A (GB)
Title: Improvements relating to movable floors for vehicles
IPC: B60P1/36
Filed: 1934-06-29
Abstract: 419,351. Fittings for loading and unloading vehicles. SHELVOKE & DREWRY, Ltd., and DREWRY, J. S., Icknield Way, Letchworth, Hertfordshire. June 29, 1934, No. 19269. [Class 78 (iv).] In a vehicle fitted with a movable floor comprising a belt or band 2 wound on a roller 5 and unwound by a cable or cables 9 and winding shaft 11, the winding shaft is operatively connected with the roller, and a fusee drum is provided to compensate for the varying effective radius of the roller during winding and unwinding of the band. As shown, the cables 9 are wound on fusee drums 10 on the shaft 11 which is connected with the roller by cables 17 wound on drums 12, 13 of uniform diameter and by spur gearing. The band 2 is secured to a metal plate 6 carrying pivoted bell-crank levers 7, 8 connected to the cables 9 and to springs 18 which take up slack in the cables. When the cables 9 are tensioned by the winding gear, the movement of the bellcrank levers is limited by stop members 19, 21. The drums 13 drive the shaft 14 through dogs 23 on the shaft as shown in Fig. 3, and springs 24 take up slack in the cables 17 at other times. There may be two or more bands 2 side by side. The fusee drum may form part of the driving connection between the shaft 11 and the roller 5.
Patent GB-248631-A (GB)
Title: Multi-filament incandescent lamp
IPC: H01K9/04
Filed: 1925-07-30
Abstract: 248,631. Rendes, S. July 30, 1925. Multiple-filament lamps.-In multiple-filament lamps of the kind in which any one of the filaments can be brought into action by means of a switching device in the cap, one end of each filament is connected to a curved contact bar 11, 11<1> on the cap. A contact arm 14 pivoted on the base contact 12 enables either of the filaments 2, 2<1> to be used at will. In the position shown the filament 2<1> is in use. The filaments may be arranged in a plane at right-angles to the axis of the bulb and preferably in zig-zag formation. Specification 153,153 is referred to.
Patent GB-193662-A (GB)
Abstract: 193,662. Simon, Ltd., H., Walker, W., and Williams, H. Feb. 15, 1922. Adjusting for wear and for position.-In connection with engines, motors, wheels, pulleys, rope drums, &c., auxiliary shaft supports are arranged adjacent the main bearings to take the load when adjustment, examination, removal and replacement of the main bearings is necessary. As shown, applied to an electrical rope-driving set, seatings for auxiliary pedestals are arranged at a, b adjacent the main bearings d, g. The auxiliary supports comprise a split pedestal with slippers h, embracing the shaft, and screws i, for applying pressure to the shaft in varying directions. The slippers h, and screws i, may be replaced by an eccentric or wedge adjusting device.