baber/WOPTO huggingface dataset:
Patent GB-125852-A (GB)
Title: Improvemets in Hand-driven Tricycles.
Inventor: KENYON CECIL HENRY
IPC: A61G5/02
Filed: 1918-07-30
Abstract: 125,852. Kenyon, C. H. July 30, 1918. Tricycles.-The main frame consists of a single horizontal tube a extending centrally fore and aft wholly beneath the level of the wheel centres; fixed to its rear end is the rear-wheel axle tube d, and to its front end a steering head g, extending upwards at a rearward inclination. The steering tube, rotatable in the steering head, is also situated wholly beneath the level of the wheel centres and has fixed to its lower end a pair of forks j for the front wheel. A gearing support m is attached, at an intermediate point in its length, by means of a stay q, preferably telescopic, to the top of the steering head, and carries a changespeed mechanism p, the arrangement being such that the weight of the passenger and the changespeed mechanism is thrown towards the centre of the path of the machine when turning. The change-speed mechanism, Fig. 3, comprises a driving-shaft o, carrying loose sprocket-wheels 6, 7, 8, and a driven shaft u carrying fixed sprocketwheels x, y, z, each pair of wheels being coupled by a chain. The driven shaft u is geared to the driving-wheel. A spring-controlled key 12 slides in a slot in the driving-shaft o. and according to the position of a slide 17, on one of the crankarms, which is connected to the key, any one of the loose wheels 6, 7, 8 may be put in gear.
Patent GB-218066-A (GB)
Title: Improvements in or relating to thermionic valve apparatus
IPC: H03F3/02
Filed: 1923-05-09
Abstract: 218,066. Graham, E. A., and Rickets, W. J. May 9, 1923. Thermionic amplifiers.-An arrangement for inter-connecting the valves of a multi-valve amplifier comprises an inductance a in the plate circuit of one valve A, and a connection from the plate of that valve through a condenser d to an intermediate point in an inductance or auto. transformer f connected in the grid circuit of the next valve B. The intermediate point may be selected by moving a switch r over studs connected to tappings on the coil f. The grid circuit of the valve B may include a biassing-battery h or a condenser shunted by a leak resistance. Resistances n, n<1>, or capacities, may be connected between the tapping and the filament end of the coil f, and across the whole coil. The plate circuit of the valve B may include a loud speaker or telephone j; or it may be similarly coupled to a third valve.
Patent GB-1272171-A (GB)
Title: Process for the preparation of an aqueous dispersion of a copolymer
IPC: C08F210/00
Filed: 1970-03-16
Abstract: 1,272,171. Aqueous emulsion of ethylene/vinyl acetate copolymers. DENKI KAGAKU KOGYO K.K. 16 March, 1970 [20 March, 1969], No. 12481/70. Heading C3P. A process for preparing aqueous emulsions of ethylene/vinyl acetate copolymers containing 30 to 98% by weight of polymerized ethylene units comprises copolymerizing the respective monomers in aqueous emulsion in the presence of an initiator and an emulsifier composition comprising (A) 5 to 75% by wt. of at least one non-ionic surface active agent having an HLB value of 16-21, (B) 10 to 90% by wt. of at least one anionic surface active agent selected from Na, K or ammonium lauryl sulphate or Na or K dodecyl benzene sulphonate and (C) 4 to 50% by wt. of at least one high molecular weight protective colloid selected from a polyvinyl alcohol having a degree of polymerization of 400-2000 and containing 5-15% by wt. of residual acetic acid groups, or a water-soluble cellulose derivative, the percentages of (A), (B) and (C) being based on the total weight of the emulsifier composition. (A) is preferably a polyoxyethylene lauryl ether, an oxyethyleneoxypropylene block copolymer or a polyoxyethylene nonyl phenyl ether. Other comonomers which may be polymerized with the ethylene and vinyl acetate, are vinyl chloride, vinylidene chloride, maleic acid, acrylic acid, methacrylic acid, an acrylic or methacrylic acid ester, acrylamide or vinyl butyrate. Examples describe the copolymerization of ethylene and vinyl acetate in the presence of various combinations of the preferred surfactants and protective colloids, with an initiator of ammonium persulphate and in an ethylene atmosphere. The polymerization is preferably carried out under a pressure of 70 to 1000 atmospheres. The produced emulsions find use as adhesives.
Patent GB-329478-A (GB)
Title: Improvements in or relating to electric heating elements
IPC: H05B3/16
Filed: 1929-04-22
Abstract: 329,478. Wade, H., (Moffats, Ltd.). April 22, 1929. Wire resistances, enclosed, threaded.-Insulating supports 11 for a pair of resistance wires 9, 10 are assembled in two intercommunicating grooves formed in a sheet metal cover plate 1. Two such coverplates may enclose the resistance, or one only ,may be used in conjunction with a lower moulded slab of insulating material when a single-faced heating element is to be made. The cover-plates are preferably of heat-resisting alloy such as nickel-chromium and the grooves formed therein are separated by a rib 5 which is an incomplete annulus.
Patent GB-1434859-A (GB)
Title: Electric motors
IPC: H02K7/14
Filed: 1974-03-20
Abstract: 1434859 Dynamo-electric machines SHELL ELECTRIC MFG CO Ltd 20 March 1974 12490/74 Heading H2A An external rotor electric motor comprises a laminated rotor core 7 and clamping blocks 8 spaced apart round the rotor periphery, the clamping blocks serving to hold the rotor laminations together and to hold the rotor in position in a rotatable casing 1, 2. The clamping blocks shown are U-shaped and are made of aluminium. The two part casing 1, 2 is made of iron. The motor shown forms part of a ceiling fan.
Patent GB-640461-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J1/00
Filed: 1947-05-08
Abstract: 640,461. Electron discharge apparatus. PHILIPS LAMPS, Ltd. May 8, 1947, No. 12492. Convention date, Dec. 15, 1944. [Class 39 (i)] An electric discharge tube has the lead-in conductor 4 for the anode 3 enclosed against the discharge by an insulating sheath 5. A glass moulding 9 has three concentric sealing edges, one of which seals to the sheath 5, a second to the tube envelope 1 and the third to the metal cap 8 of the lead-in conductor. An anode screen 6 is attached to the sheath 5 by a clip 7.
Patent GB-1384736-A (GB)
Title: Moulds for injection moulding
IPC: B29C45/26
Filed: 1972-03-17
Abstract: 1384736 Injection moulds CROUZET 17 March 1972 [24 March 1971] 12517/72 Heading B5A An injection mould comprises a fixed portion 2-5 and a movable portion 1, and a central member 6 having inlet passages 6a formed in it, this member being associated with the fixed portion 2-5 in such a way as to effect, upon opening of the mould, a movement of translation followed by a rotation. The axial movement of the member 6 is effected by a compression spring 15. The central member 6 has a helical cam 6c which co-operates with a pin 12 on a sprue ejector 11a to produce rotation of the member 6. This rotation effects removal of moulded articles which might otherwise adhere to ejectors 17. Recesses 6d in the member 6 allow free passage for the ejected articles.
Patent GB-327869-A (GB)
Title: Improvements relating to mattresses for bedsteads
IPC: A47C23/28
Filed: 1929-04-23
Abstract: 327,869. Austin, B. April 23, 1929. Mattresses. - A mattress surface 1 which can be adjustably tensioned is secured to a supporting frame 2 by forming hooked ends on the tension bolts 3 carried by the end bar or bars 4 of the mattress.
Patent GB-715234-A (GB)
Title: Improvements in or relating to disc brakes for vehicles
IPC: F16D55/224
Filed: 1952-05-19
Abstract: 715,234. Disc brakes. HILGER, O., and BUSCH, W., [trading as BERGISHE STAHLINDUSTRIE]. May 19, 1952 [June 9, 1951; Dec. 31, 1951], No. 12569/52. Class 103(1) A disc brake, primarily for vehicles running on rails, comprises a double walled brake disc 4, which acts as a centrifugal blower, arranged at the outer side of the wheel and being rigidly fixed at its central region to the wheel hub 3 but being clear of the wheel disc at its circumferential region. As shown in Fig. 2, the disc 4 is shrunk or force fitted on to the hub 3, but it may be bolted to the inner part of the wheel as shown in Fig. 4 and 8, in which latter arrangement there is sufficient clearance between the disc and the wheel to apply friction blocks to each side..Where, as in Fig. 6, there are brake discs on the outer sides of each of a pair of wheels the brake rod arrangement is in the form of pincers.
Patent GB-389671-A (GB)
Title: Improvements in or relating to arc-rupturing devices for electric circuit interrupters
IPC: H01H9/44
Filed: 1932-05-02
Abstract: 389,671. Arc-rupturing in switches. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.- (Assignees of Andersen, N. K. ; 236, Avenue F., Forest Hills, Wilkinsburg, Pennsylvania, U.S.A.) May 2, 1932, No. 12589. Convention date, May 6, 1931. [Class 38 (v).] The arc formed at switch contacts 10, 11 is transferred to arcing terminals 21, 23, and is then moved under the influence of a coil 33 carrying the arc current through a transfer slot 18 into a narrow slot 20 formed between two insulating members 16, 17. Here the ends of the arc are transferred to concentric arc terminals 30, 24, and the arc is rotated in the narrow slot 20 until it is extinguished. The coil 33 comprises spaced turns through which the arc-generated heat is dissipated. Spaced members 41 are provided above the transfer slot 18 through which heat is discharged. These members also have a deionizing effect and prevent the arc leaving the slot. Numerical examples of the amount of current at various voltages which may be interrupted are given in the Specification.
Patent GB-466308-A (GB)
Title: Improvements in or relating to hair-nets, caps and the like
IPC: A45D8/40
Filed: 1936-05-04
Abstract: 466,308. Caps for personal wear. KOTTING. E. W. May 4, 1936, No. 12602. [Class 63] [Also in Group XIV] A cap or hair-net having a pair of draw strings in its rear portion has each draw string passing round an anchorage at which the direction of the draw string is reversed, so that both ends are disposed at the same side of the centre plane of the cap or net. Conveniently, a single rigid ring 18 is disposed at the centre of the rear margin of the cap or net, in a hem which guides the strings. The ring may be fixed in position. A separate ring may be provided for each string, or each string may pass through the bight of the other. The strings may be secured to the outer corners of the cap, and the other ends may emerge from the hem at about one-third the length of the margin from the corners. The ends 21 may be tied together behind the neck after the margin has been puckered by pulling on these ends.
Patent GB-1511636-A (GB)
Title: Process for the preparation of 2-chloronicotinic acid
IPC: C07D213/78
Filed: 1977-03-25
Abstract: 1511636 2-Chloronicotinic acid LONZA Ltd 25 March 1977 [2 April 1976] 12639/77 Heading C2C 2-Chloronicotinic acid is obtained in pure, white form by distilling 2-chloronicotinic acid chloride from a reaction mixture containing it and allowing the distillate to run into water at 40-100‹ C., the acid chloride thereby being hydrolysed and precipitating out in crystalline form. The precipitate obtained is usually recrystallized from a methanol-water mixture. The initial reaction mixture may be obtained by reacting nicotinic acid N-oxide with (a) PCl 5  in the presence of POCl 3 , or (b) with POCl 3  in the presence of a tert-amine or carboxylic acid amide.
Patent GB-442988-A (GB)
Title: Self-acting detent device for holding in an open position a door, gate, window, window shutter or for use any other analogous purpose
IPC: E05C19/02
Filed: 1935-04-29
Abstract: 442,988. Door holders. SCHWENDENER, H., Buchs, St. Gall, Switzerland. April 29, 1935, No. 12707. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 31, 1935.] [Class 65 (i)] A holder for doors and the like comprises a fixing member 2 carrying a hinged plate 4 provided with inclined faces 6 to engage yieldingly a hole in a member 13, the plate 4 being pressed to the engaging position by a spring 10 or, in a modification, by weight. A lower projecting part of the member 2 acts as a stop. A screw 8 passing freely through the plate 4 and threaded into the member 2 limits the movement of the plate 4. The spring shown may be replaced by a spring of any other suitable form, or by a spring at the hinge of the plate 4 ; the device is inverted if a weight is to be used in place of a spring.
Patent GB-872878-A (GB)
Title: Improvements in and relating to electric battery assemblies
IPC: H01M6/46
Filed: 1959-04-15
Abstract: 872,878. Batteries. UNION CARBIDE CORPORATION. April 15, 1959 [April 16, 1958], No. 12732/59. Class 53. A battery consists of a stack of cells each of which consists of a zinc anode covered with a bibulous separator and having on each side a wet depolarizer mix. A conductive plastic film covered with a metal foil is in contact with the depolarizer, all the elements of the cell being enclosed in a sealed film. The negative terminal consists of a wire 14 projecting from a side of the cell, the positive terminal being formed by the metal foil a part of which is exposed through an opening 12 in the enclosing film. Connection between adjacent cells is made by bending the wire 14 of one cell till it rests over the positive terminal of the other cell. No soldering or other permanent connection is made between the cells. Fig. 2 shows a number of cells joined in this way, the terminals 15, 17 of the battery being mounted on an insulating plate 34. The pile of cells is enclosed between two insulating covers 16 of fibre board outside of which are spring metal plates 24. The assembly is then inserted in an outer metal or plastic container 26, the plates 24 exerting sufficient pressure on the cells to maintain contact between the pairs of terminals 12, 14. The container is closed by an insulating board 36, sealing material 38 and a cover 32.
Patent GB-1456383-A (GB)
Title: Dc power supply circuits
IPC: H02M3/338
Filed: 1973-03-16
Abstract: 1456383 DC - DC converters MULLARD Ltd 18 March 1974 [16 March 1973] 12733/73 Heading H2F [Also in Division H3] A D.C.-D.C. converter comprises a transistor TR2 arranged to switch current into the primary L6 of a transformer T3 and having feedback from a current transformer T2 to the base, a resistor Rs being included in the base circuit, the voltage drop across Rs being arranged to turn off transistor TR2 when the current in the main path reaches a predetermined value. As described, operation is initiated by a starting circuit (not shown) which turns on TR2. The base and collector currents build up until the voltage across Rs reaches the triggering voltage of a threshold sensing device TSD e.g. a Schmitt trigger, which cuts off TR2. The energy stored in T3 is then rectified at D1 and supplies a load RL. The circuit then remains quiescent until a further input is supplied by a feedback circuit F/B which controls the frequency in dependence on the required output power. For constant load the frequency is constant over a range of input voltages. An auxiliary winding may be included in T2 or T3 for starting.
Patent GB-821036-A (GB)
Title: Improvements in the manufacture of complex protein compounds
IPC: C07D487/22
Filed: 1956-04-25
Abstract: Complex protein compounds of metal complexes of the chlorophyll and porphyrin series, as well as of their decomposition products such as bilirubinoids, are produced by adding a solution of the proteinaceous substance to a solution of the metal complex, and the resulting complex isolated, e.g. by precipitation with a protein-precipitating agent such as alcohol or acetone, or by spray drying in vacuo.  The proteinaceous substance may be animal blood, blood plasma, milk albumen or egg albumen.  Specification 407,486, [Group IV], is referred to.
Patent GB-1369531-A (GB)
Title: Releasable pawl mechanism
IPC: B63B21/18
Filed: 1972-12-14
Abstract: 1369531 Chain stop CLARKE CHAPMANJOHN THOMPSON Ltd 14 Dec 1972 [18 March 1972] 12790/72 Heading B8B [Also in Division F2] A chain stop for heavy duty use in holding mooring chains of marine drilling rigs against movement and being readily releasable whilst the chain is heavily loaded, comprises a lever assembly 30, 32, 36 pivoted at 28 in side plates 10 of a chainway mounting and carrying a pawl 22 pivotally mounted at 24 to the lever assembly. A heavily loaded chain 12, guided in a fixed chainway 14 formed in the side plates 10, is normally held against movement by the pawl 22 which reacts on the lever assembly along the pawl axis (i.e. line of action 42) which passes close to the lever pivot 28 to greatly reduce the turning moment on the lever assembly whereby the lever 36 may be readily held, to lock the assembly, by a lightly loaded catch 38 pivoted at 40. On release of the catch 38 the lever assembly and pawl turn anticlockwise with the pull of the chain until the pawl 22 becomes clear of the chain at 221 when finally the pawl falls clear of the chain to the position 222. In a modification the fixed chainway 14 may be replaced by a roller formed with a chainway groove in its periphery.
Patent GB-1516946-A (GB)
Title: Interconnecting bracket for logs
IPC: E04B2/70
Filed: 1976-03-30
Abstract: 1516946 Spiked plates for joining logs R B C McLAY 30 March 1976 [3 April 1975] 12826/76 Headings F2H and F2M [Also in Divisions B3 and E1] A bracket for joining logs to form a retaining wall, a wall of a container, fencing &c. consists of a base 6 from which project upwardly inclined arms 7 or 7A, the base having projections 8 or 8A on its underside to grip a log 11 when secured thereto by a nail 17 knocked through a hole 9 or 9A in the base, and the arms having serrations 13 or claws 13A to similarly grip an upper log 12, of a size to fit between the arms, when secured to the upper log by further nails 17 knocked through a hole 14 or 14A in each arm. The bracket may be of metal or plastics. In the latter case, Fig. 1, a strip of connected brackets is produced, joined by tearable sprews 40, the brackets being reinforced by lateral ribbing 41 having the serrations 13. In the case of a metal bracket, Figs. 3 and 5, this is preferably produced from a continuous metal sheet, also as a strip of connected brackets, by a stamping and punching machine comprising upper and lower die plates 21, 22 including interacting punching and forming tools arranged in stages as follows: two punching tools 25, three punches 27 and two contoured punches 28 for producing respectively corner radiusing notches 26, the holes 9A, 14A, and the claws 13A; a countersinking tool combination 29 and bending tools 30 for respectively countersinking the hole 9A and bending the claws 13A to required angle; guillotine blades 31, 32 which shear the metal at 33 and leave an unsheared portion 20 which can be easily broken; a punch 35 producing lateral reinforcing impressions 16; conical punches 36 forming depending projections 8A; and punches 37 for forming pockets 38 around the holes 14A.
Patent GB-1035977-A (GB)
Title: Improvements relating to automatic textile carding plant
IPC: D01G21/00
Filed: 1964-03-31
Abstract: 1,035,977. Change-speed gear. MASCHINENFABRIK RIETER A.G. March 31, 1964 [April 5, 1963], No. 13194/64. Heading F2D. [Also in Division D1] Hollow output shaft 37 of transmission 13 is driven from input shaft 29 at a high speed through gears 35, 36 when clutch plates 33<SP>1</SP>,34 are engaged, and at a low speed through overtaking clutch 32 and gears 31, 30 when plates 33<SP>1</SP>, 34 are disengaged. Solenoid 26 attracts plate 33<SP>1</SP>against plate 34, and is automatically de-energized when a sliver in a textile machine intercepts a light beam to a photo-cell.
Patent GB-167148-A (GB)
Title: Improved manufacture of artificial fuel
IPC: C10L5/44
Filed: 1921-05-10
Abstract: 167,148. Fournier, F. F. July 30, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Addition to 163,042. Composition fuel.-From 10 to 25 per cent by weight of the lignite forming the chief constituent of the fuel prepared as described in the parent Specification is replaced by one or more kinds of combustible vegetable matter such as sawdust, peat, grass and straw which are fed at the same time as the lignite into a pulverizing-machine.
Patent GB-1084839-A (GB)
Title: Supports for furnace roofs and the like
Inventor: BIRSE ALEXANDER LOW
IPC: F27D1/02
Filed: 1965-03-29
Abstract: 1,084,839. Refractory hanger bricks. JOHN G. STEIN & CO. Ltd. March 10, 1966 [March 29, 1965], No. 13251/65. Heading F4B. A refractory hanger brick used for supporting monolithic roofs and walls of industrial furnaces comprises a rectangular head with end recesses 6 and 7 for inverted U -clips 4 and 5, and two recesses 13 and 14 extending at an angle upwardly from diagonally opposite corners of the brick in the side faces of the head. The recesses receive one arm 4<SP>1</SP>, 5<SP>1</SP> of clips 4, 5 which are disposed side by side and hook over the flanges of a support girder 2. In a modification, Figs. 6-8 (not shown), recesses extend from all four corners of the brick, one pair of diagonally opposed recesses being deeper than the other pair, so that the arms of the clips lie within the side faces of the brick head.
Patent GB-218261-A (GB)
Title: Improvements in submarine signalling systems
IPC: H04L5/14
Filed: 1924-05-30
Abstract: 218,261. Western Electric Co., Ltd., (Assignees of Gilbert, J. J.). June 30, 1923, [Convention date]. Wire resistances.-An artificial line for a, submarine cable is provided with a resistance 3 composed of seven strands of high resistance material such as nichrome, the individual strands being soldered at each end to corresponding strands of copper forming conductors 4, 5 of about the same diameter as the cable conductor. The joints are distributed as shown in Fig. 4 over a distance sufficient to provide taperings 6-7 and 8-9 to strengthen the connection mechanically. The composite conductor is covered with guttapercha or like insulation over which is laid a thin tape 11 of brass or copper.