baber/WOPTO huggingface dataset:
Patent GB-373187-A (GB)
Title: Improvements in or relating to friction ratchet clutches and friction ratchet drives
IPC: F16D41/08
Filed: 1931-02-13
Abstract: 373,187. Friction ratchet clutches and gearing. AKTIEBOLAGET SPONTAN, 2, Norrmalmstorg, Stockholm. Feb. 13, 1931, No. 4563. Convention date, Feb. 28, 1930. [Classes 80 (ii) and 80 (iii).] In friction roller ratchet clutches or gearing, particularly in which caged rollers are spring- pressed into engagement with wedging surfaces on an outer member and thus tend to move centrifugally to the disengaged position, a centrifugal device is provided to increase the spring pressure at high speed and preferably acts on control means for reversing the direction of drive. In an automatic variable-speed gear as described in Specifications 259,975, 276,853, and 314,873, [all in Class 80 (ii), Gearing, Variable-speed &c.], wherein negative turning- moments are transmitted to a stationary part by a roller-detent arrangement V and positive turning-moments to a cylindrical inner member A by a roller clutch B, C, compensating balls S in recesses R in the part B coact with inclined surfaces P on the axially-moved control sleeve L which angularly shifts the cage D to exert forward or reverse pressure on the rollers C through springs E. The sleeve L is coupled to the cage D by studs N passing through circumferential slots (not shown) in the part B and through helical slots M in the sleeve L, and is prevented from rotating relatively to the part B by axial slots and further studs rigid in the part B, similar to the slots and studs M<1>, N<1> associated with the corresponding sleeve L<1> for controlling the detent device V. The sleeve L is axially moved through a thrust bearing J by sleeves F, G, acted on by means allowing lost motion ; as shown, this means comprises an arm H rotated about the axis of a cylindrical guide Z, the arm being free to tilt and acted on by a rod 3 responsive to changes in lubricating oil viscosity, as described in Specification 349,010. A duplicate compensating device operative for reverse drive may be provided, but is usually unnecessary on a vehicle, the balls S being thrust wholly into their recesses R when the sleeve L is in the reverse position. Escape of the balls through the slots M is then prevented, for instance by the irregular distribution thereof shown in Fig. 4.
Patent GB-806425-A (GB)
Title: Flared electric switch contact structure
IPC: H01H50/54
Filed: 1957-02-11
Abstract: 806,425. Contact-member for switches. MALLORY & CO. Inc., P. R. Feb. 11, 1957 [Feb. 21, 1956], No. 4567/57. Class 38(5). A switch contact 20, e.g. for a vibrator, comprises a concave disc 23 which is connected to a supporting plate 10 by a central weld dimple 21 and which has its periphery 24 flared into a plane parallel to the plane of the supporting plate.
Patent GB-724553-A (GB)
Title: Improvements relating to devices for preventing condensation on windscreens and the like
IPC: B60S1/54
Filed: 1953-02-18
Abstract: 724,553. Preventing condensation on windscreens. WOLF, H. Feb. 18, 1953 [Feb. 18, 1952],No. 4591/53. Class 20 (3). A windscreen demisting device, preferably placed in the middle lower region of the screen 2, consists of a flat front plate 3 and a concave plate 1 spaced therefrom to form a slot 14 along the margins of each plate, air supplied from a duct 4 at the bottom of the plates being discharged over the entire surface of the screen, this being assured by baffles in the space between the plates. In a modification, Fig. 4, the flat front plate 7 is pivoted at 8 and is movable towards and away from the screen by a screwed adjusting means 10, the nut 11 of which is journalled in a stationary partspherical plate 12. The nut 11 may be fixed to the plate 7.
Patent GB-734440-A (GB)
Title: Cold setting of liquid tar products
IPC: C08L95/00
Filed: 1953-02-19
Abstract: Hard elastic tar products are made by forming a cold liquid mixture comprising a bitumen, asphalt, pitch or like tar product of low volatility and 5 to 90 per cent by weight thereof of a hardenable incompletely condensed urea-aldehyde resin, adding to the mixture an acid-reacting catalyst for the resin and allowing p  the mixture to set.  As catalyst, alcoholic or aqueous solutions of inorganic and/or organic acids or acid-reacting salts, may be used.  Porous products may be made by mixing the tar-resin mixtures with crushed calcium carbonate and a wetting agent before the acid-reacting catalyst is added.  Wood meal may also be added to the tar-resin mixtures.  The porous products are suitable for lining refrigerators.  Specification 567,619 is referred to.
Patent GB-591418-A (GB)
Title: Paving machines
IPC: E01C19/40
Filed: 1945-02-26
Abstract: 591,418. Road - surfacing apparatus. VIBER CO. Feb. 26, 1945, No. 4799. Convention date, Feb. 14, 1944. [Class 107] [Also in Group XXIX] A machine for compacting concrete on a roadway comprises a self-propelled carriage having independently driven road wheels 20, a power unit 80, an electrical generator 81 which supplies power to the motors 70 of the pumps 74 that operate the various hydraulic systems and motors, a vibrating screed 79 and a cross member 97 which is raised or lowered by telescopic arms 100 operated by the hydraulic jacks 133. The cross member supports a number of independently operated vibrators 69, which may be inclined at any desired angle to the vertical by the telescopic arms 118 rotating the cross member, the arms 118 being pivotally attached to, but operating independently of, the arms 100. A vibrator unit consists of a high speed motor 84, the housing of which is rigidly attached to the cross member, driving an eccentric rotor enclosed in a rigid housing 91 by a flexible shaft contained in a resilient shaft 95. The lengths of the arms 100 and 118 are adjusted by hydraulic means.
Patent GB-756195-A (GB)
Title: Improvements in or relating to methods and apparatus for cutting semi-conductor crystals
IPC: H01L21/00
Filed: 1954-02-18
Abstract: 756,195. Pickling. SIEMENS & HALSKE AKT.-GES. Feb. 18, 1954 [Feb. 18, 1953], No. 4855/54. Class 82(2). [Also in Groups XXII, XXIII and XXXVI] Semi-conductor crytals are cut by a band, wire, thread or the like of high tensile strength, on which a grinding and/or corrosive agent is placed during the cutting operation. The grinding agent may be moistened with water, oil or alcohol. The wire may have a surface coating of soft material, e.g. copper or silver, in which the grinding agent, e.g. emery, carborundum powder or diamond dust may be held. The wire may be of steel, molybdenum or bronze ; nylon, perlon, or natural silk may be used. When the wire is of magnetisable material, e.g. steel or iron, a magnetisable grinding agent, e.g. ferrite powder, is used ; by magnetising the wire, at least at the cutting position, the grinding agent is caused to adhere to the wire ; if the crystal is non-magnetic the magnetic grinding powder can easily be removed from the cut surface. A semi-conductor monocrystal 1 is divided into portions by endless steel wires 2, 3, 4 each passing around idler pulleys 10 and driving pulley 11. Each wire passes over a roller 5 which draws ferrite powder from a container 6. The wire is magnetised by a head 7 before it reaches the roller 5 and is demagnetised by a head 12 after it has left the cut. The ferrite powder may alternatively be dusted on or otherwise applied. When non-magnetic material is used it may be removed from the wire after it has left the cut by a stream of liquid. A corrosive agent, e.g. liquid, may be applied to the wire additionally to the grinding agent in some cases simultaneously. The corrosive agent may be used in place of the grinding agent. The corrosive agent and/or the grinding agent may be removed from the wire, e.g. by washing, after it has left the cut. The cutting action may be increased by moistening the wire with an electrolyte and applying a voltage between the wire and the material being cut. The cutting action may be improved by exciting the wire with mechanical vibrations, e.g. ultrasonic longitudinal vibrations. In place of the endless wire, a long wire may be wound from a supply reel on to a take-up reel ; the wire may be wound back again at high speed without any cutting action. A frame may be used on which separate wires are stretched adjacent one another, the frame being so driven that the wires reciprocate, one or both strokes being cutting strokes. The thickness of the wire is preferably less than 0À5 mm.; it may be 0À2 mm. or even less than 0À1 mm.
Patent GB-144996-A (GB)
Title: Improvements in the lubrication of motor vehicles
IPC: B60R17/02
Filed: 1920-02-17
Abstract: 144,996. Skelly, B. H. June 14, 1919, [Convention date]. Swivelling joints. -- Swivel unions for connecting conduits 2 leading from a pump to the parts of a motor-vehicle, comprise cups 3, connected by tubular threaded stems 4 to the parts to be .lubricated, and swivel members 6 mounted in the cups and held by threaded sleeves 7. Elbows S threaded into the members 6 are secured to the conduits. Spring-pressed check-valves 11 are located in the unions to prevent flow of oil except when forced.
Patent GB-722037-A (GB)
Title: Improvements in or relating to laminated driving belts
IPC: F16G5/16
Filed: 1952-02-25
Abstract: 722,037. Belt gearing. BRAMMER, H. Feb. 10, 1953 [Feb. 25, 1952], No. 4883/52. Class 80 (1) In a belt composed of a series of overlapping strips 1 of leather, fabric or rubber secured together by link fasteners 2, as described in Specifications 562,910 and 616,653, the head 15 of each fastener 2 is formed as a loop or ring through which a retaining element 17 in the form of a short plug, pin or tube is passed. Various forms of the loop or ring-shaped head are described.
Patent GB-1382244-A (GB)
Title: Moulding process
IPC: C08L67/06
Filed: 1972-02-02
Abstract: 1382244 Moulding polyesters BP CHEMICALS INTERNATIONAL Ltd 4 April 1972 [6 April 1971 25 Oct 1971 2 Feb 1972] 8885/71 49425/71 and 4886/72 Heading B5A [Also in Division C3]  To reduce surface porosity in thermosetting unsaturated polyester mouldings, e.g. trays, fabricated under heat and pressure in a matched metal mould, a particulate, inorganic filler having a particle size (e.g. 5 thou.) greater than the width of the flash channel of the mould is incorporated in the moulding composition. The filler may comprise spherical, cubiodal or rectangular glass beads which may be treated with silane, alumina, a silicate, calcium carbonate dolomite. or mixtures thereof. The particle size may be greater than five thou. The unsaturated polyester may comprise a proportion of maleic or fumaric unsaturation. A proportion of the fumaric and maleic residues may be replaced by isophthalic, carbic, tetrachlorophthalic or chlorendic acid residues and supplemented with bisphenol A adducts of ethylene oxide or propylene oxide. The copolymerizable monomer for the unsaturated polyester may comprise styrene, diallyl phthalate, vinyl toluene or triallyl cyanurate. The moulding composition may include a fibrous reinforcing filler such as a mat, webs, chopped strands or rovings of glass, carbon, sisal, asbestos, polyethylene terephthalate or polyvinyl alcohol, a second particulate filler having a particle size which is smaller than the flash channel width, fire retardents such as antimony oxide, viscosity modifiers such as calcium and magnesium oxides and hydroxides, polymerization inhibitors, polymerization initiators such as dibenzoyl peroxide, tertiary butyl peroxide and tertiary butyl perbenzoate, lubricants and mould release agents such as zinc stearate and stearine and a shrink preventive such as a saturated liquid polyester, e.g. polypropylene adipate or polypropylene sebacate which may include a thermoplastic resin such as polystyrene, polythene, P.V.C., polyacrylate or a polymethacrylate to prevent exudation of the saturated polyester during moulding. The latter may take place under a pressure of 500 to 800 p.s.i. and a temperature of 120‹ to 140‹ C.
Patent GB-142584-A (GB)
Title: Improvements relating to the manufacture of firelighters
IPC: C10L11/00
Filed: 1919-02-27
Abstract: 142,584. Turner, R. Feb. 27, 1919. Composition fuel. - An apparatus of the type described in Specification 978/14, for use in making firelighters of the kind in which a few sticks and shavings are combined together and then dipped at the ends in creosote salt or other inflammable binding-material, comprises a long box A, Figs. 2 and 3, divided by transverse walls into a row of compartments a tapering slightly downwards and of length and breadth approximately the same as those of the fire-lighter. Slots are formed in the central parts of the ends and transverse walls of the box to receive a clamp consisting of two long bars B, B' hinged together at one end and held together by a loop hinged to the opposite end of the bar B. In the process of making the fire-lighters, the bar B' is placed in position in the box, a few sticks C are laid in each compartment, which is then filled with chips, shavings, or other material D, and then a few sticks C' are laid in each compartment and the whole pressed together and held between the bars of the clamp. The compression is effected by means of a long lid A<1>, Fig. 7, having projecting portions or dies, and pressed down by means of a lever E<7> coacting with a fixed rail E. When the ends of the clamp members have be,en secured, the clamp, with its fire-lighters, is taken to a dipping-tank, which may have a steam jacket and be filled with creosote salt.
Patent GB-716900-A (GB)
Title: Improvements relating to lockets
IPC: A44C25/00
Filed: 1952-02-26
Abstract: 716,900. Lockets; brooches. MAXIM, J. Feb. 25, 1953 [Feb. 26, 1952; April 7, 1952], Nos. 5010/52 and 8828/52. Class 43 A locket in the form of a miniature book comprising a pair of covers 2, 3 hinged together by a pin 4 and furnished with complementary parts of a releasable clasp fastening 12, and containing a collection of separate or interconnected pages 1 bound between the covers and each bearing a picture &c. is suspended from an ornament or trinket, such as a clasp or brooch 15, Fig. 5, as by a chain and the ornament is adapted for attachment to clothing, or is a bracelet, earring, necklace or other device worn on the person. The rear cover 2 is extended at. its inner edge and bent round into U-form to constitute the back 5 of the book and to receive the pages which may be adapted to be drawn out and collapsed in concertina fashion. A lens 24 for viewing the pages is hingedly mounted at 25 to the edge of the front cover 3 and can be folded flat against the inner face of the cover 3 when the locket is closed. The brooch 15 comprises an ornamental plate 16 with a pin 18 hinged to the back thereof, the free end of the pin being adapted to engage in a locking device 19 consisting of a small channelshaped spoon 19 slidably engaged in a tubular housing 20 fixed to the back of the plate 16, the spoon 19 being furnished with a spindle 21 and actuating piece 22.
Patent GB-707328-A (GB)
Title: Improvements in tire
IPC: B60C11/03
Filed: 1952-02-27
Abstract: 707,328. Pneumatic tyres. WINGFOOT CORPORATION. Feb. 27, 1952 [Sept. 28, 1951], No. 5126/52. Class 144(2) A pneumatic tyre has a tread 2 comprising a pair of circumferential ribs 6, 7 separated by a circumferential groove 14, each rib 6, 7 being formed by a plurality of parallel lugs 10 or 11 arranged so that corresponding opposed lugs of the ribs form a chevron pattern, and certain of the opposed lugs being more closely spaced than the intervening opposed lugs to vary the width of the groove 14. As shown in Fig. 2 the tread 2 comprises four lugged ribs 5, 6, 7, 8 separated by circumferential grooves 13, 14, 15, the groove 14 lying on the great circle 18 of the tyre. The lugs 9, 10, 11, 12 of the ribs 5, 6, 7, 8, respectively, co-operate to form a herring-bone pattern and are arranged so that alternate opposed lugs 10, 11 .project more into groove 14 than intervening lugs 10, 11 and the same lugs 10, 11 are more widely spaced from their respective corresponding lugs 9, 12 across the grooves 13, 15 than the intervening lugs 9, 10, 11, 12. The lugs may be directed at angle between 50 degrees and 75 degrees to the great circle 18 of the tyre. Fig. 4 shows an arrangement wherein staggered parallel lugs 24 and 25 are respectively joined to form two continuous serpentine circumferential ribs 26, 27 with a varying width groove 28 therebetween. Circumferential spacing of the lugs is obtained by moulded grooves 30. Staggered blocks 31, 32 are provided on the outer edges of the tread, each spaced from the end of the adjacent lug portion of the respective ribs 26, 27, the tread formation on one side of the great circle 29 being a mirror image of that on the other side. The width and height of the lugs of the tyre should be such that as the tyre wears the ratio width to height will vary from about 0.75 to about 1.5.
Patent GB-1029994-A (GB)
Title: Improvements in tubing
IPC: B29C63/26
Filed: 1963-02-08
Abstract: A tube (see Division F2) has a coating formed of a mixture of a polyesterurethane elastomer and a polyvinyl chloride surrounding an inner core.  The polyesterurethane is produced by a reaction between a polyester, a diphenyl diisocyanate and a glycol, e.g. an hydroxyl-terminated poly(tetramethylene adipate) with butanediol-1,4 and with diphenyl methane-p,p1-diisocyanate.  The polyester is prepared by an esterification reaction of an aliphatic dibasic acid or an anhydride thereof with a glycol.  The basic polyesters used are dicarboxylic acids such as adipic, succinic, pimelic, suberic, azelaic, sebacic or thier anhydrides, preferably of the formula HOOC(CH2)xCOOH where X varies from 2 to 8.  The glycols are butanediol - 1,4, hexamethylendiol - 1,6, octamethylenediol-1,8, and preferably of the formula HO(CH2)xOH where X varies from 4 to 8. The diphenyl diisocyanates are diphenyl methane diisocyanate, diphenyl methane-p,p1--diisocyanate, dichlorodiphenyl methane diisocyanate, bibenzyl diisocyanate, diphenyl ether diisocyanate.
Patent GB-846986-A (GB)
Title: Improvements relating to belt conveyors
Inventor: NEWTON HORACE JOSEPH
IPC: B65G43/00
Filed: 1958-02-18
Abstract: 846,986. Endless belt-conveyer framework. UNIVERSAL CONVEYOR CO. Ltd. Jan. 12, 1959 [Feb. 18, 1958], No. 5247/58. Class 78 (1). In a belt conveyer of the kind in which the belt 1 is supported on a series of idler roller assemblies each comprising a set of rollers 2, 3, 4, or a series of single rollers, each roller assembly or single roller is supported in a hoop frame 5 extending across the width of the conveyer above the belt 1. Each hoop frame comprises side limbs, each composed of two portions 6, 7, a top portion 8, and inwardlyextending portions 10 having upright end portions 13. Outer rollers 2, 4 of a roller assembly are supported between side portions 7 and the upright end portions 13 whilst centre roller 3 is supported in offset bearings in the end portions 13. The hoop frame is secured by bolts passing through the portions 10 to a transverse bar 11 mounted on longitudinal girders 12. Cover-plates 16 provided with lateral flanges 17 are supported between adjacent stands 5 and are held in place by hooks 18 on the flanges 17 which engage apertures in the side portions 6 of the hoop frames, the hooks being so formed that either side of the cover-plates may be lifted up for inspection purposes as indicated at 16<1>, 16<11>.
Patent GB-1410128-A (GB)
Title: Large capacity-external cooled vinyl halide polymerization reactor
IPC: B01J19/18
Filed: 1973-02-02
Abstract: 1410128 Polymerisation reactor; mixing apparatus CONTINENTAL OIL CO 2 Feb 1973 [22 Feb 1972 6 April 1972] 5343/73 Headings B1C and B1X [Also in Division C3] A polymerisation reactor of at least 5,000 gallon capacity, for aqueous dispersion polymerisation of monomers consisting substantially of at least one vinyl monomer, comprises an upright generally cylindrical reaction zone with dish-shaped ends, an agitation system and a cooling means, the agitation system which is designed to promote roll-over circulation comprising a rotatable agitator in the lower portion of the reaction zone and a stator-type agitator, the rotatable agitator providing substantially laminar flow about a generally vertical central axis and the stator-type agitator being located generally vertically near the periphery of the reaction zone and providing localized turbulent mixing near the reaction zone periphery. The rotatable agitator may be a bottom-entering agitator having four paddle blades, preferably pitched at an angle of from 30 to 60. The stator-type agitator may be a vertical plate or plates fixed to the reactor peripheral wall or agitation means providing countercurrent liquid circulation. The cooling means is preferably a substantially vertical, externally-cooled condensing tube mounted flush with the reactor interior surface so that condensed vapour flows directly into the reactor, (Figs. 2 to 5, not shown). A plurality of condenser tubes may have their upper ends connected into a header through which monomer and/or purge gas can flow.
Patent GB-958307-A (GB)
Title: Improvements relating to jet propulsion engines
Inventor: MAY GORDON CYRIL
IPC: F02K1/12
Filed: 1962-02-12
Abstract: 958,307. Jet propulsion nozzles. ROLLS-ROYCE Ltd. Feb. 12, 1962, No. 5367/62. Heading F1J. A jet engine casing 14 Fig. 2, has a variable jet propulsion nozzle provided by flaps 17 controlled by a cylindrical flap control member 23, moved by rams 24 and guide members 33 . . . 36 Fig. 3 secured to the casing and the flap control member which cooperate to ensure that the flap control member moves substantially axially. A mounting ring 15 is secured to the jet pipe 14 and carries pivots 16, on each of which is mounted a flap 17 carrying a roller which is engaged by the tapered end portion 22. An axially-directed guide rail 35, secured to the flap control member is engaged by rollers 36. Ram pistons 27 are connected to the flap control member by links 30 and an extension 34, of the cylinder 2 co-operates with rollers 33 carried by brackets 31 mounted on the flap control member. Movement of the flap control member to the left in Fig. 2 causes the end portion 22 to engage roller 21, pivoting the flaps 17 to reduce the nozzle area. Movement of the flap control member to the right permits the engine gases to move the flaps outwardly.
Patent GB-641302-A (GB)
Title: Improvements in and relating to alloy steel for the manufacture of tools provided with hard metal cutting edges
IPC: C22C38/18
Filed: 1948-02-24
Abstract: A steel having the following composition, C 0.4-0.6 per cent; Mn 1.0-2.5 per cent; Si 0.5-1.0 per cent; Cr 3.0-6.5 per cent; Fe, with the usual impurities the remainder, is used as shank material for those tools equipped with hard metal in which the shank is tooled first, and is then equipped with the hard metal by brazing, after which it is stressed by repeated impact or wear, as in the case of rock-drills or coal-cutting chisels.  The steel may also include 0.05-2.0 per cent of the carbide forming elements Mo, W, V, Ti, Ta, Nb, together with sufficient extra carbon, if necessary to ensure that 0.4-0.6 per cent of carbon remains unbound in the alloy.