baber/WOPTO huggingface dataset:
Patent GB-1293614-A (GB)
Title: An improved method of and apparatus for capacitor winding
Inventor: HARVEY PETER
IPC: H01G13/02
Filed: 1970-05-07
Abstract: 1293614 Capacitors BRITISH INSULATED CALLENDER'S CABLES Ltd 6 May 1971 [7 May 1970] 22177/70 Heading H1M In a method of manufacturing a wound capacitor by winding round a mandrel a composite strip comprising electrode and dielectric layers, a constant voltage is applied across the electrode layers as they travel towards the mandrel, the resulting current flowing is integrated and winding is stopped when the integrated current value corresponds to the desired capacitance. As shown, metallized polypropylene films 18, 19 each pass over the guide roller 16 and dancing roller 17 of tension monitors 12, 13 and these rollers are rhodium plated and are fitted with contact brushes to function also as contacts whereby a voltage of 100 volts may be applied. Preferably, to eliminate errors in the integrated value due to static charge, the constant voltage is only applied during the last few turns and the winding speed is reduced after a set number of turns prior to applying the voltage. Pinholes in the dielectric may be burnt out during the initial winding by applying a constant voltage which may be of the same value and shorting the electrodes before the final winding stage. Surge diverting diodes (28) (Fig. 2, not shown) prevent damage to integrating circuit (30) during pinhole clearance. Alternatively the current may be integrated throughout the winding process with the winding speed automatically reduced at a predetermined integrated value towards the end of the winding. A circuit (21) (Fig. 2, not shown) holds off the integrating circuit (30) to permit recharging after burn-out of pinholes. The process may be combined with the winding process described in Specification 1271278.
Patent GB-779424-A (GB)
Title: Snap switch
IPC: H01H13/18
Filed: 1955-08-02
Abstract: 779,424. Retractive snap action switches. MAXSON CORPORATION, W. L. Aug. 2, 1955 [Jan. 21, 1955], No. 22184/55. Class 38(5) In a snap-action switch wherein depression of a spring blade 51 past a dead-centre position, e.g. by means of a lever 71 and plunger 65, causes contacts on the free end of the blade to snap across out of engagement with a contact terminal 34 and into engagement with a contact terminal 38, the blade itself being fixed at its left hand end to a contact terminal 42, the members are all accommodated as shown in grooves or recesses formed in the two halves of a casing and retained there by fixing the two halves together by means of a ribbed pin 12. The blade 51 has a tongue 57 cut out in its centre and the tongue bears against a hollow 48 and tends to hold the blade in its upper or lower position according to whether the blade lies above or below the hollow 48.
Patent GB-687559-A (GB)
Title: Improvements in or relating to engine starter gearing
IPC: C23C22/08
Filed: 1951-09-21
Abstract: 687,559. Turning-gear. BENDIX AVIATION CORPORATION. Sept. 21, 1951 [Sept. 22, 1950], No. 22191/51. Addition to 665,242. Class 7 (v). In an engine starter gearing comprising a power shaft 1, a hollow sleeve 3 splined thereon and formed on one end with inclined driving surfaces 7, a clutch ring 9 having on one end inclined driven surfaces 8 co-operating with the surfaces 7 and on the other end having over-running clutch teeth 12, a pinion 4 slidably journaled on the power shaft 1, a driven over-running clutch member 14 fixed to the pinion having teeth 13 cooperating with teeth 12, and the sleeve 3 and ring 9 embodying circumferential shoulders 16, 17 respectively, a compression spring 18 is provided on the sleeve and ring between shoulders 16, 17, and means including a barrel 19 surround the clutch members for yieldingly limiting the separation of the clutch members and sleeve. In opera-. tion the sleeve 3 is moved rightwardly by a shifting fork' 31 and slides the pinion 4 along the power shaft 1 into mesh with the engine gear 6 whereupon the starter motor, not shown, is energized to rotate the power shaft. Torque is therefore transmitted through teeth 7 and 8 so that the ring 9 is rotated and has axial pressure applied thereto whereby teeth 12 and 13 engage; teeth 7, 8 form an overload slip clutch. The reaction of the teeth 7, 8 compresses spring discs 25 located between the shoulder 16 and a disc 22 in the barrel 19 and if the torque exceeds a given maximum the spring discs, which are normally under initial compression, are further compressed to allow slippage between teeth 7, 8. When the engine starts, the release of the cranking load permits the ring 9 to move towards the sleeve 3 and compress the spring 18 so that teeth 12, 13 overrun; if the engine does not continue selfoperative, then teeth 12, 13 are re-engaged by the spring 18 when the starter motor and pinion speeds are equal. A bushing 11 is fixed in the outer end of sleeve 3 and is journalled on the power shaft thereby forming a bearing for the sleeve and clutch ring 9. Specification 685,588 is referred to.
Patent GB-924802-A (GB)
Title: Dimpled metal sheet
Inventor: SCHLUMBERGER ETIENNE MAURICE
IPC: E04C2/32
Filed: 1961-06-20
Abstract: 924,802. Metal sheeting. CONCH INTERNATIONAL METHANE Ltd. June 20, 1961, No. 22192/61. Class 20 (2). A metal sheet has on one side two sets of elongated dimples 2, 3 with rounded ends and which curve into the surrounding sheet, the axes of the dimples in each set being parallel and at an angle to the axes of the dimples of the other set with a dimple of one set between each two dimples of the other set and the dimples being so close to each other that no straight line can be drawn across the sheet which does not go through a dimple. One or more circular dimples 4 of a third set may lie between four adjacent elongated dimples and may be on the other side of the sheet. Specifications 924,803 and 924,804 are referred to.
Patent GB-744657-A (GB)
Title: Improvements in or relating to combustion equipment of gas turbine engines
Inventor: JANES RALPH
IPC: F23R3/10
Filed: 1952-01-08
Abstract: 744,657. Generating combustion products, under pressure. ROLLS-ROYCE, Ltd. Jan. 5, .1953 [Jan. 8, 1952], No. 22215/54. Divided out of 744,593. Class 51 (1). In an air jacketed type of combustion chamber for a gas turbine engine, the air inlet to the combustion space comprises a duct or ducts 60, 61 extending along the walls 24, 25 of the flame tube, the ducts having a cross-sectional area which increases from the inlet to the outlet. The outlet of the duct is through a series of openings 41 in the walls of the flame tube. The velocity head of the air flowing in the duct is thereby converted into pressure head. The flame tube shown is annular and is enclosed in an annular air casing 22, 23 and comprises a channel-section annular ring 31 which is mounted in the channels of the wedge-shaped fuel-injection device supporting elements 17, the elements 17 being supported from the diffuser section 10 by struts 21. The primary air ducts 60, 61 are continued beyond the openings 41, the crosssectional area of the ducts then decreasing rapidly, there being outlet 33 from the ducts to direct air along the flame tube walls.
Patent GB-150536-A (GB)
Title: Improvements in or relating to chairs, seats and similar articles composed of wickerwork, cane or the like
IPC: A47C5/02
Filed: 1919-09-10
Abstract: 150,536. Timlock, W. J. Sept. 10, 1919. Wickerwork.-The wickerwork or like woven seat portion of chairs &c. is made resilient by combining flat spring steel strips or steel wire with the usual cane warps. Fig. 1 shows cane or wicker warps a, a, combined with flat spring steel warps b.
Patent GB-640787-A (GB)
Title: Improvements in and relating to safety devices for pressure cookers
IPC: A47J27/09
Filed: 1948-08-24
Abstract: 640,787. Pressure cookers. BAKARIAN, P. W. Aug. 24, 1948, No. 22308. [Class 123(i)] A pressure cooker of the type in which the cooker is sealed by rotatably displacing a handle fixed to the lid has a pivoted arm 5 which allows the lid 4 to be removed only after the relief valve 6 has been opened. Removing the weight member of the valve 6 allows the arm and flexible connection e.g. a chain 8 to clear the handle 1 which may then be rotated to unseal the cooker. The valve may be of the displacement type and additional to the normal relief valve. Specification 615,768 is referred to.
Patent GB-1367450-A (GB)
Title: Hammer breaker for breaking up bulky refuse material
IPC: B02C13/282
Filed: 1973-05-10
Abstract: 1367450 Hammer mills; jaw crushers LINDEMANN MACHINENFABRIK GmbH 10 May 1973 [10 June 1972] 22384/73 Heading B2A  A hammer mill I includes a casing 2 having side walls 9, 10 which upwardly diverge, forming a hopper, one side wall 10, facing the downward rotation of the hammers 6 being hinged about an axis 12, at the same level as the rotor axis 8, and actuated by a toggle mechanism. The opposed side walls include saw-tooth section members 11. The hammers cooperate with an anvil 14. Large rubbish e.g. 4 is supplied by a belt conveyor B and jamming is prevented and a measure of precrushing effected by oscillation of the hinged wall, in the manner of a jaw crusher.
Patent GB-235062-A (GB)
Title: Improvements in groat cutting machines
IPC: B02C9/02
Filed: 1924-09-23
Abstract: 235,062. Fitzpatrick, H. D., (Robin Hood Mills, Ltd.). Sept. 23, 1924. Mills and apparatus. - A groat-cutting machine comprising a perforated rotary cylinder having an open end, closed by a stationary disc, and a number of stationary knives fitted closely around the outside of the cylinder, is provided with regulatable feeding-means and with an overflow aperture in the disc to allow of the escape of any large grains that will not pass through the perforations. Agitating and lifting devices are provided in the cylinder and rotate therewith. The cylinder 3, Figs. 1, 3 and 4, is mounted on a shaft 2 and fed from a hopper 7 which discharges into a funnel 8 communicating with an apertured casting 6 secured to the rim of the stationary disc 4 that closes the open end of the cylinder. The .casting 6 forms the upper end of a spout 5, and the hopper 7 is fitted with a feed-roll 10 which is driven by a belt from the shaft 2 and co-operates with an adjustable slide 11. A shoot 17 directs the incoming groats against the descending side of the drum 3, and cup-shaped agitators 18 with flaring lips 19 are secured to the end of the drum opposite the disc 4 to agitate the uncut groats and raise them tothe shoot 17. Overflow openings 21 are provided in the disc 4, and toothed wheels 22 mounted on a shaft project into the perforations 15 and dislodge any particles that may get stuck therein.
Patent GB-169071-A (GB)
Title: Improvements in electric lamp supports
IPC: F21V21/26
Filed: 1920-07-28
Abstract: 169,071. Runkel, A. C. July 28, 1920. Pivoting-adjustments; double and multiple hinges.-In an adjustable bracket for electric lamps, each joint comprises a box-shaped member, Fig. 6, bent from a blank, Fig. 7, opposite walls having eyed extensions 17 which fit between the extensions on the arms 9, 10 of the bracket and pivot on the pins 21, Fig. 1. The joint is held sufficiently tight to prevent movement due to the weight of the lamp by adjusting a wing- nut 24 on the pin so that washers 20 on each side of a spacer 22 frictionally engage the internal surface of the extensions of the walls.
Patent GB-244197-A (GB)
Title: Improvements in or relating to passenger vehicles
IPC: B60J9/02
Filed: 1924-09-23
Abstract: 244,197. Gage, S., and London General Omnibus Co., Ltd. Sept. 23, 1924. Luggage-holders.-In passenger vehicles, a locker 16 below a rear door 14 is provided with a closure 18 having hinged thereto a strip 21 and being normally held closed by a keyoperated lock 23 the bolt 24 of which engages an aperture in the bottom of the door 14. The closure is withdrawn on the opening of the door 14 by means of a lip 27 on the lock 23 engaging the bottom edge of the door, and the parts fall into the position shown in broken lines. The locker may be opened by operating the lock by its key when the door 14 is closed. Specification 207,682, [Class 108 (i). Road vehicles, Body details, &c., of.], is referred to.
Patent GB-946347-A (GB)
Title: Process for the manufacture of cement
Inventor: POULSTON BERNARD VINCENT
IPC: C04B7/38
Filed: 1961-06-22
Abstract: In the semi-dry process for the manufacture of cement the starting material is pelletized with water and a bituminous binder. The bituminous binder may be a petroleum distillation residue, bituminous limestone or shale, tar or pitch.  In the example, the water/bitumen binder was sprayed as an aqueous emulsion on to the starting material in a rotating drum granulator.
Patent GB-705098-A (GB)
Title: Compositions containing glycidyl ethers of dihydric phenols with epichlorhydrin or dichlorhydrin
IPC: C07D301/28
Filed: 1951-09-28
Abstract: Compositions useful as adhesives and capable of curing with a hardening agent include a glycidyl ether of a di-hydric phenol having a 1, 2-epoxy equivalency greater than 1, and less than 100 per cent. by weight (based on the ether) of a polyvinyl ester of a saturated fatty acid, specifically polyvinyl acetate.  Suitable glycidyl ethers are described for example in Specification 680,997.  A method for determining the epoxy equivalency is described in Specification 681,099.  Known hardening agents for glycidyl ethers may be included in the compositions which may also include solvents as described in Specifications 681,108, 681,099, and 693,651, and inorganic fillers such as asbestos, aluminium oxide, silica, bauxite, zinc oxide, china clay, titanium oxide and silicon carbide.  The compositions may be cured at atmospheric or raised temperature.  In the examples, (I) Polyvinyl acetate was mixed with a heated glycidyl ether of 2, 2-bis (4 hydroxyphenyl) propane and phthalic anhydride added as hardener. (II) The glycidyl ether of 2,2-bis (4-hydroxyphenyl)-propane was mixed with acetonitrile, polyvinyl acetate and asbestos fibre. Di-a-butylamine was added as hardener.  The composition was used to stick aluminium blocks together.  (III) is similar to ex. II but uses allyl glycidyl ether as the solvent in place of acetonitrile.  (IV) The composition contained a glycidyl ether of 2,2-bis (4-hydroxyphenyl) propane, a glycidyl ether of glycerol, allyl glycidyl ether, bauxite and polyvinyl acetate.  Diethylene triamine was used as hardener.  (V) Adhesive compositions were prepared containing the glycidyl ether of 2, 2-bis (4-hydroxyphenyl) propane, the glycidyl ether of glycerol, acetonitrile and varying proportions of polyvinyl acetate. Di-n-butylamine was used as hardener.  (VI) was similar to V but included asbestos as a filler.  Specifications 630,647 and 630,663 also are referred to.
Patent GB-486070-A (GB)
Title: Improved apparatus for treating textile fabrics
IPC: D06C7/00
Filed: 1936-11-28
Abstract: <PICT:0486070/IV/1> In an apparatus as claimed in the parent Specification for treating fabrics with vapours or gases especially for steaming printed fabrics, in order to prevent steam from the inlet pipe 18 from entering the tunnel-like passage 10, the fabric is arranged to leave the outlet chamber 14 at a higher level 16 than where it enters the inlet chamber 11 at 12, and an upstanding pipe 17 may be provided on the outlet chamber 14 through which the steam or other treating vapour or gas may escape.
Patent GB-1437264-A (GB)
Title: Support device for underslung carrier-type material  handling apparatus
IPC: F16F13/08
Filed: 1973-05-14
Abstract: 1437264 Elevator railways MCNEIL CORP 14 May 1973 [9 June 1972 (2)] 22859/73 Heading B7L [Also in Division F2] A material handling apparatus A comprises a monorail B for manually or power driven suspended trolleys C, the rail B being supported from overhead transverse beams D, each carrying the rail B via brackets 30 bolted to the beams D and bolts E, F connected to brackets 14 on the rail B and each trolley comprising wheeled trucks 110, 112, 114, 116 carrying a load bar 100 having a central load supporting eyebolt 140. The invention is characterized in that the bolts E, F are connected to the bracket 14 and 30 by resilient entirely flexible material liquid containing closed vessels 50, 70 and 50<SP>1</SP>, 70<SP>1</SP> respectively; the trucks 110, 112, 114, 116 support the load bar 100 through resilient flexible liquid containing closed vessels 120, 122, 124, 126 respectively and the load bar 100 supports the eyebolt 140 through a resilient flexible liquid containing closed vessel 144. The closed vessels are, in this embodiment annular or ring like and are disposed in each case between washers 40, 42 and 62, 64 and the bolts E, F pass through enlarged apertures 22 to permit of universal movement via the ring members. The ring members 50, 50<SP>1</SP> and 70, 70<SP>1</SP> are connected by conduits 80, 82 respectively to equalize the loadings on the bolts E, F. The ring members 120, 122 and 124, 126 are connected by equalizing conduits 130, 133 respectively.
Patent GB-715829-A (GB)
Title: Improvements in explosive mixtures
IPC: C06B31/06
Filed: 1951-10-02
Abstract: 715,829. Gunpowder compositions. BOWDEN, F. P., and BLACKWOOD, J. D. Oct. 1, 1952 [Oct. 2, 1951], No. 22967/51. Class 9(2) A black powder containing a 70 per cent carbon charcoal, sulphur, and a nitrate, e.g. potassium nitrate, contains a small proportion of a metallic salt which reacts with hydrogen sulphide to remove the hydrogen sulphide as it is formed during burning of the powder. Suitable metallic salts are those of lead, e.g. lead acetate, or iron, e.g. ferric or ferrous sulphate. Five per cent lead acetate or 0.5 per cent ferric or ferrous sulphate may be added to black powder consisting of 75 per cent potassium nitrate, 15 per cent charcoal (70 per cent carbon) and 10 per cent sulphur.
Patent GB-1114997-A (GB)
Title: Heat-and light-stabilized moulding compositions containing vinyl chloride homopolymers and copolymers
IPC: C07F7/22
Filed: 1966-05-23
Abstract: Homo and copolymers of vinyl chloride and compositions containing these polymers are stabilized against light and heat by the addition of 0.05 to 5% by weight of a compound obtained by reacting RSn Hal3, where R is a monovalent alkyl radical containing not more than 20 carbon atoms and Hal is chlorine, bromine or iodine with an equivalent amount of a mixture of an alkali metal sulphide with either an aliphatic alkali metal mercaptide or with an alkali metal salt of a mono or polycarboxylic acid.  In the examples, montan wax is also added.ALSO:A stabilizer for homo- or co-polymers of vinyl chloride is obtained by reacting RSnX3 where X =chlorine, bromine or iodine and R is a monovalent organic radical with not more than 20 carbon atoms with an equivalent amount of a mixture of an alkali metal sulphide with an aliphatic alkali metal mercaptide or with an alkali metal salt of a mono- or poly-carboxylic acid. The reaction is carried out in aqueous solution or in the presence of an organic solvent at a temperature between 20 DEG  and 100 DEG  C. The tin compound contains an aliphatic, cycloaliphatic, araliphatic or aromatic radical and is preferably a chloride.  The other compounds are preferably sodium salts, the mercaptide having less than 20 carbon atoms and the carboxylic acid having at least one carboxylic acid group attached to a saturated hydrocarbon radical, or to a hydrocarbon radical containing at least one carbon-carbon double bond and not more than 20 carbon atoms.  Many examples of suitable compounds are given.
Patent GB-427600-A (GB)
Title: Improvements in or relating to the recovery of gold from roasted pyrites
IPC: C22B11/08
Filed: 1934-08-08
Abstract: Roasted pyrites containing less than 4,5 grms. of gold per ton are subjected to a chlorinating roast, copper is removed by leaching, and the gold then recovered from the residue by leaching with known solvents, such as sodium or potassium cyanide, calcium cyanide, cyanogen bromide, or thiourea.  Leaching liquids rendered strongly alkaline as by lime are preferably employed, and gold may be recovered from the solutions obtained by means of zinc dust.  A 0,05 per cent solution of sodium cyanide is preferably used, leaching being effected in a number of tanks, and later fractions of the solvent used in any one tank being passed to the next tank in the series.  A flow sheet illustrating the leaching step is given.ALSO:Roasted pyrites containing less than 4,5 grms. of gold per ton are subjected to a chlorinating roast, copper is removed by leaching, and the gold then recovered from the residue by leaching with known solvents such as sodium or potassium cyanide, calcium cyanide, cyanogen bromide, or thiourea.  Leaching liquids rendered strongly alkaline as by lime are preferably employed, and gold may be recovered from the solutions obtained by means of zinc dust.  A 0,05 per cent solution of sodium cyanide is preferably used, leaching being effected in a number of tanks, and later fractions of the solvent used in any one tank being passed to the next tank in the series.  A flow sheet illustrating the leaching step is given.
Patent GB-189531-A (GB)
Title: Improvements in or relating to aircraft undercarriages
IPC: B64C25/60
Filed: 1921-08-31
Abstract: 189,531. Reid, W. T., and Bristol Aeroplane Co., Ltd. Aug. 31, 1921. Dash-pots.-In aircraft undercarriages in which the wheels are resiliently mounted on a leg comprising a piston and cylinder dash-pot, and the size of the leak in the dash-pot is varied automatically according to variation in the length of leg, a non-return valve is provided in the piston to facilitate quick extension of the leg on removal of external pressure. The cylinder 10 has a piston 12 carried by a tubular rod 13 carrying a block 14 supporting tubular struts 15. The struts have blocks 16 each carrying pulleys 17, and being secured to a part 18 sliding on the cylinder. A member 19 at the cylinder end carries blocks 22 sliding on the struts 15 and carrying pulleys 23 which are connected to the pulleys 17 bv rubber cords 24. The piston 12 has a central aperture 29 formed with a conical valve seat 30 for a valv.e 31, which can open to allow passage of fluid when the piston moves away from the cylinder head. Through a central aperture 32 in the valve passes a pin 33, having a part 34 of uniform diameter, a tapering part 35, and a less rapidly tapering part, so that as the piston moves towards the head, the size of the leak is slowly diminished and is entirely closed when the valve 31 reaches the port 34.