baber/WOPTO huggingface dataset:
Patent GB-618745-A (GB)
Title: Improvements relating to percussive tools operated by internal combustion of gases
IPC: B25D9/10
Filed: 1946-11-28
Abstract: 618,745. Percussive tools. WARSOP PETROL DRILL & TOOLS, Ltd., and WARSOP, N. W. Nov. 28, 1946, No. 35344. [Class 124] [Also in Group XXVII] In a percussive tool, in which a free piston 18 strikes the tool 25 on ignition of a charge in a chamber 12 between it and a piston 3 working on a two-stroke cycle with crank-case compression, the transfer passage 16 and its port are shaped so that the charge swirls round a concave head 14 and draws up the piston 18 ready for the next stroke. This piston is preferably formed hollow at 19 to form a continuously-curved surface with the head 14 and has a flange 20 which reciprocates in a buffer chamber 23. A non-return valve may allow air to enter the space below the flange 20 and assist in lifting the piston 18.
Patent GB-1267372-A (GB)
Title: A device for measuring vibration of a rotor
Inventor: HOBLEY MAURICE EDWARD
IPC: G01H1/00
Filed: 1968-07-24
Abstract: 1,267,372. Vibration detecting. ENGLISH ELECTRIC CO. Ltd. Sept. 19, 1969 [July 24, 1968], No.35352/68. Heading G1J. A device for measuring vibration of a rotor relative to a stator structure within which the rotor is mounted for rotation, comprises a probe 12, fluid actuating means for bringing the probe into rubbing contact with the rotor when desired, a pick-up 14 for monitoring movement of the probe relative to the stator structure when the probe 12 is in rubbing contact therewith and restricted conduits 26 to 30 conducting actuating fluid to the contact surface 11 of the probe 12 to provide lubrication during operation. The fluid actuating means comprises a substantially sealed annular chamber 22 to which actuating fluid may be fed from a port 23. Two annular rolling diaphragms 17, 18 seal the chamber 22 between the probe 12 and two sides of the chamber 22, the effective areas differing so that the fluid urges the probe toward the rotor, a spring 24 biasing it away when not in operation. The fluid may be air and for use on a low pressure stage of a steam turbine, the air may be supplied at atmospheric pressure.
Patent GB-799749-A (GB)
Title: Roller conveyor
IPC: B65G39/00
Filed: 1956-11-19
Abstract: 799,749. Roller conveyers. UNITED STATES STEEL CORPORATION. Nov. 19, 1956 [Dec. 27, 1955], No. 35355/56. Class 78 (i). A conveyer for centring and aligning objects supported on their outer boundaries, e.g. barrels with chimes, comprises rollers 10, each of which consists of a pair of frusto-conical rollers 16 supported on a stationary bent shaft 12 with their smaller ends adjacent. Each roller has spaced webs 18, 20, 22 with central bearings. The webs 22 are connected by pins 32 to rotate together. In a modification the rollers 16 are generally cylindrical with slightly tapered portions at their inner ends.
Patent GB-658750-A (GB)
Title: Improvements in electrical circuits for use with discharge devices
IPC: H05B41/18
Filed: 1947-12-31
Abstract: 658,750. Supply systems for space discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 31, 1947, Nos. 35377 and 35378. Convention dates, Dec. 24, 1946, and July 24, 1947. [Class 38 (iv)] The heating circuit for the thermionic electrodes 2, 3 of a discharge device 1 is separate from the main discharge circuit and arranged to be open - circuited upon initiation of the discharge by a thermal or electromagnetic switch 36 actuated by all or part of the discharge current. The electrodes may be supplied from the secondaries 5, 6 of a heating transformer, the primary 4 of which is connected across the main supply leads through the normally closed contacts 8 of the switch, the actuating coil 7 of which is included in the discharge circuit of the device. To prevent repeated operation of the switch contacts in the event of a faulty discharge device the switch may include a voltage holding coil 37 connected across the main supply leads through contact 38 when the switch is actuated by the discharge current. To facilitate initiation of the discharge an auxiliary electrode 16 may be provided, juxtaposed to the outer wall of the discharge device, with an auxiliary voltage applied between the auxiliary and a main electrode.
Patent GB-901747-A (GB)
Title: Method and equipment for forming molded articles
IPC: B29D22/00
Filed: 1958-11-04
Abstract: 901,747. Moulding bladders. MERCIER, J. Nov. 4, 1958, No. 35416/58. Class 87(2). A mould for forming bladders has a base 11 and a cover 12 with recesses 17, 28 which together define the mould cavity 30, the cover 12 having a bore 26 in communication with the cavity, and a core 13 having a stem portion 33 extending through the cover bore 26 and a body portion 32 in the mould cavity, the stem 33 having a transverse chamber 35 between its ends in communication with the mould cavity and a longitudinal channel 34 leading from the outer end of the stem into the transverse chamber 35. Longitudinal grooves 36 provide this communication. The mould is charged with a quantity of material such as unvulcanised rubber, natural or synthetic, slightly greater than that required to form the article, closed by means of a hydraulic press (not shown), and then locked by means of screws 38. The excess material at least partially fills the chamber 35 so that by forcing a fluid under pressure through channel 34, the material in the mould is maintained under compression even if some should escape by seepage between the base 11 and cover 12, thus preventing the formation of voids or air pockets.
Patent GB-915676-A (GB)
Title: Improvements relating to electric rectifiers embodying semi-conductor material
Inventor: BLUNDELL ALAN JOHN
IPC: H01L23/047
Filed: 1958-11-04
Abstract: 915,676. Semi-conductor devices. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 3, 1959 [Nov. 4, 1958], No. 35427/58. Class 37. Fig. 2 shows a section through a PN junction rectifier mounted in an hermetically sealed casing and attached to a heat sink 1, the other connection 9 to the rectifier being made through an insulating sleeve 10 through the wall of the casing. During construction the wall is brazed into a recess in the base 1. The connection through the wall of the housing consisting of a terminal conductor 7, the insulating sleeve 10, metal caps 12, a metal plug 13 to which a terminal member 14 is secured and a projection 8 on conductor 7 for making the internal connection 9. This assembly is brazed or soldered together and the flange 11 is then brazed to the wall of the housing. The semi-conductor wafer 2 with a preformed PN junction on it is then soldered to contact 5 and the reverse side is soldered to base 1. Flexible lead 6 is then soldered simultaneously to both terminal 5 and member 14. Terminal 5 is so shaped as to have a high electrical and a high thermal resistance. Lid 4 is now mounted in the housing and welded with an oxygen arc. In the construction shown the cross-section of the housing is hexagonal. Specification 835,993 is referred to.
Patent GB-353360-A (GB)
Title: Improvements in or relating to carburettors of aircraft engines
IPC: F02M5/02
Filed: 1930-11-25
Abstract: 353,360. Spray carburetters. FIAT SOC. ANON., 250, Via Nizza, Turin, Italy. Nov. 25, 1930, No. 35495. Convention date, Nov. 29, 1929. [Class 7 (iii).] Fuel flow to a carburetter is preserved when an aircraft engine is inverted. Fuel is fed through a filter 16b to a distributing chamber 15, from which two channels 14, 13 lead to the float chamber 1. A gravity. slide 17 closes one of the conduits 14, 13, and the float 9 is pivoted at 10 and carries a needle 12. During normal running, air enters through a regulated orifice 8 and passes a nozzle 3, the mixture entering a venturi tube 5a. When the carburetter is inverted the slide 17 closes the conduit 13 and fuel enters the float chamber through the conduit 14. A nozzle a which communicates with an air intake conduit b supplies mixture to the venturi tube 5a. A byepass nozzle 2 for slow running is provided. In a modification, the lever 11 is pivoted at its middle and a float replaces the gravity slide in the chamber 15. In a further modification in which the lever 11 is pivoted at its middle and a gravity slide is used, the outlets of the channels 13, 14 are cross-connected.
Patent GB-995291-A (GB)
Title: Sausage packaging machine
Inventor: GOOD PAUL FREDERICK
IPC: B65B19/34
Filed: 1962-09-18
Abstract: 995,291. Packaging machines; endless conveyers. SPEEDCO Inc. Sept. 18, 1962, No. 35499/62. Headings B8A and B8C. Sausages D carried on a chain conveyer B beween aligning belts C are picked up by a second onveyer A (see Fig. 3) passing round sprockets 24 between aligning wheels 36 and guide rails 48, and are released in batches from the lower run of the conveyer A by mechanism E above a waiting box G supplied on an intermittently operated chain conveyer 172. An endless spring belt 40 prevents the sausages falling off the links 30 of the conveyer A as it passes round the sprockets 24. The mechanism E, Fig. 6, is formed by a horizontally reciprocable carriage including triangular plates, e.g. 102, driven on rollers 105a by a cam S, and a vertically reciprocable plate 108, movable with the carriage and operated by a cam U to push the sausages down into the box G. The carriage is joined to the rails 48 by slotted extensions 103. Before the sausages are pushed down by the plate 108 they are held by gates 104 on the carriage, which are pivoted by a cam T to release them. The box conveyer is operated through a double ratchet device, Figs. 7, 12 and 13 (not shown), one member of which is axially displaceable to move the conveyer 172 at each or alternate strokes of the plate 108 to receive either one or two layers of sausages in the box G.
Patent GB-1084794-A (GB)
Title: Apparatus for contacting a liquid with a gas or vapour
IPC: B01D53/18
Filed: 1964-08-31
Abstract: 1,084,794. Contacting gases with liquids. TISSMETAL LIONEL-DUPONT, TESTE & CIE. Aug. 31, 1964 [Sept. 26, 1963], No. 35508/64. Heading B1R.  A gas/liquid contact column comprises superposed contact stages each containing a packing unit or units composed of vertically arranged corrugated sheets separated by plain sheets adjacent stages being separated by a by a plate 20 which collects all the liquid descending the column and re-distributes it through holes 23 over the packing in the stage below. Preferably pairs of corrugated sheets are arranged between adjacent plain sheets and the material of the plain sheets may be pervious or impervious to fluids and may have roughened surfaces or comprise a catalytic material. A number of assembled corrugated and plain sheets may be wound spirally to form a packing unit, or the sheets may be in the form of concentric cylinders. The upper and lower edges of the plain sheets in a unit may be serrated. The lower edges of the plain sheets in a packing unit may project below those of the corrugated sheets and the upper edges of the corrugated sheets in a packing unit may be project above those of the plain sheets. The plate or plates 20 may be secured to flanges secured to the inner wall of the column as shown in Fig. 7 or between the flanges of sections of the column which are bolted together, Fig. 8, (not shown).
Patent GB-321851-A (GB)
Title: Improvements in or relating to the flight-controlling means of aircraft
IPC: B64C13/02
Filed: 1928-12-03
Abstract: 321,851. Tips, E. O. Dec. 3, 1928. Controlling. - A dashpot or similar device is coupled to a control surface and is adapted so to be influenced by the airflow in flight that its resistant property is varied from a normal minimum to a maximum when the aircraft has attained a predetermined speed, thus preventing unduly rapid movement of the control column. In one form control cables aa of an aeroplane bare connected with the opposite ends of a lever c on a cross-shaft d on which is a bell-crank lever e, f, one arm e of which is connected by a link g with a lever h on an elevator j. A dash-pot cylinder k is formed with a byepass m and its piston n is connected by its connecting-rod o with the arm or the lever ef. A valve p arranged in the bye-pass m is adapted to be operated by a vane projected into the air stream and adapted to be moved against the action of a spring r to close the valve p. Pilot holes ss in the piston n prevent jamming of the controls should the valve p be completely shut ; alternatively a shear pin may be employed at the connection of the rod o with the arm f. In another form a dash-pot in the form of a drum having one or more radial partitions and a piston having curvilinear motion is provided, having a bye-pass controlled in a manner similar to that described above. In this case the pilot holes ss may be formed either in the radial partitions or in the piston.
Patent GB-1102953-A (GB)
Title: Improvements relating to electromechanical transducers
Inventor: TURNER CHARLES WILLIAM
IPC: H03F13/00
Filed: 1963-09-10
Abstract: 1,102,953. Piezo-electric elements; semiconductor devices. ELECTRIC & MUSICAL INDUSTRIES Ltd. 10 Sept., 1964 [10 Sept., 1963], No. 35589/63. Headings HIE and HlK. [Also in Division H3] An electromagnetic delay line 4 is associated with a slab 2 of barium titanate or other substance having similar dielectric and electrostrictive properties. The delay line may be printed or otherwise deposited on the slab and is of the meander type having a pitch of about 0.001 inch. The velocity of the electromagnetic wave propagated by the loaded line is comparable to that of the mechanical wave propagated in the slab of barium titanate. In a modification, the slab may contain a slice 1 of cadmium sulphide within which are produced current carriers, e.g. bv illuminating the slab with the 5,770/5,790 A mercury lines. The current carriers are subject to an electric drift field in the direction shown. In a modified construction, the delay line may be in the form of a helix wound upon a rod of electro-strictive material. The device may be used as a delay line, a transducer or a signal amplifier.
Patent GB-930434-A (GB)
Title: Method of and apparatus for making coated multi-conductor cable
Inventor: LANG DONALD DALE
IPC: H01B7/08
Filed: 1961-10-03
Abstract: 930,434. Flat strip cables. SPECTRA-STRIP WIRE & CABLE CORPORATION. Oct. 3, 1961, No. 35618/61. Class 36. A flat strip cable is made by joining together by a solvent a plurality of insulated conductors. P.V.C.-insulated conductors 20 are each led through guide apertures 36 and 44 and then around screws 52, the centre one of which is mounted on a slide 48 adjusted so as to provide sufficient tension to straighten the conductors. The conductors are then brought closer together by apertures 70 and aligned in a horizontal plane by passing over and under rods 74, being pressed together by a spring-loaded member 78. The contiguous conductors are then passed through a bath 88 of a solvent, tetrahydrofuran, between a roller 102 and rod 103 mounted on a vertically-movable slide 92 by means of which they may be removed from the solvent. As the conductors leave the solvent bath 88 they pass around a drying drum 22 on to which warm air is blown. The composite strip conductor is then taken over a pulley system to a take-up drum. The time for which the conductors are immersed in the solvent is adjusted so that the join between conductors is tangential and they may easily be separated as required during installation, e.g. of a cable harness or like system.
Patent GB-1507965-A (GB)
Title: Electroless nickel plating of metal articles
IPC: C23C18/36
Filed: 1976-08-26
Abstract: Metals and metal alloys are subjected to currentless nickel plating in a bath containing (a) 30-150 g/l of at least one complexing agent, (b) 10-50 g/l of sodium hypophosphite and 5-10 g/l of an accelerator, (c) a content of 0.01-0.05 g/l of CuSO4, calculated as CuSO4.5H2O as a stabilizer and (d) a nickel content of at least 7 g/l. The bath is suitable in particular for the currentless nickel plating of aluminium and aluminium alloys.
Patent GB-1101519-A (GB)
Title: Moulding of plastics material
Inventor: DOHM ROLF GORDON
IPC: B29C41/04
Filed: 1965-08-19
Abstract: 1,101,519. Rotational moulding; heated moulds. DOHM PLASTICS MACHINERY Ltd. 23 May, 1966 [19 Aug., 1965], No. 35636/65. Heading B5A. In a process for the rotational moulding of thermoplastics, heating fluid is circulated through a hollow jacket (8, Fig. 2, not shown) defining the cavity walls, while rotating the mould on a plurality of non-parallel axes (e.g. AA, BB), and cooling fluid is circulated through the jacket when moulding is complete. Preferably, hot gas is admitted to the interior of the mould to obtain a smooth inner surface to the moulding, at least during the latter part of the circulation of the heated fluid. The apparatus (Fig. 2, not shown) comprises a mould unit, (2), defining a mould (6), including a hollow jacket (8) defining those parts of the mould corresponding to the walls of the article to be moulded, means to rotate the mould unit e.g. motor (32, Fig. 1, not shown) about a plurality of non-parallel axes (e.g. AA, BB), a heat exchanger unit (56, Fig. 1, not shown) and connections completing a fluid circulation system through the heat exchanger unit and the hollow jacket. There may be means to supply heated gas to the mould e.g. fan (66) and heater (68). The mould unit may be mounted on a rotatable shaft and rotated about an axis perpendicular to the shaft. There may be a plurality of mould units mounted on the shaft.
Patent GB-355147-A (GB)
Title: Improvements in or relating to thermostatically controlled electric switches
IPC: H01H37/52
Filed: 1930-05-27
Abstract: 355,147. Thermal switches. BARKER, G. P., (trading as BARKER, G.), 112, Doveleys Road, Pendleton, Manchester. May 27, 1930, No. 35786. Divided on 343,555. [Class 38 (v).] A bimetallic strip j, subject to temperature change, raises and lowers a rod n carrying adjustably spaced nuts p, q, thereby operating, with an adjustable amount of lost motion, a lever f which carries a mercury switch a and the forked end of which embraces the rod n between the nuts p, q. The lever f is pivoted substantially at the point of balance of the mercury switch and the pivot is made stiff so that the mercury switch remains fixed when not acted upon by one of the nuts. Specification 343,555 is referred to.
Patent GB-1484383-A (GB)
Title: Progressive power ophthalmic lens
IPC: G02C7/02
Filed: 1974-08-15
Abstract: 1484383 Ophthalmic lenses AMERICAN OPTICAL CORP 15 Aug 1974 [16 Aug 1973] 35984/74 Heading G2J The subject-matter is identical with that disclosed in Specification No. 1484382 but the invention relates to the provision of a discontinuity in dioptic focal power between two vertically juxtaposed viewing zones, the discontinuity being no greater than 0À5 dioptics.
Patent GB-1484353-A (GB)
Title: Electronic security systems incorporating noise rejection circuitry
IPC: G01V15/00
Filed: 1974-08-15
Abstract: 1484353 Pulse circuits; transponder systems G J LICHTBLAU 15 Aug 1974 [20 Aug 1973] 26028/74 Headings H3T and H4L [Also in Division G4] A missing pulse detector for use in an electronic security system (see also Division G4) comprises an R3 integrator R2, C2 associated with a shunt transistor switch S2, a threshold circuit 54, a set-reset flip-flop 50 and an OR circuit 52. In operation, the leading edge of input pulses momentarily close switch S2 via OR 52 to discharge C2 and also set flip-flop 50 as to produce a high level output. This output opens switch S2 to permit C2 to charge. The time constant of R2, C2 is adjusted to be larger than the input pulse period so that C2 is periodically discharged before the threshold of 54 is exceeded. In the event of a missing pulse, the flip-flop 50 is reset by the threshold circuit output to produce a low level output. The electronic security system operates by detecting the presence of a resonant tag circuit 15 in an electromagnetic field repetitively swept through a predetermined frequency range and established between antennas 12, 14. The system includes a band pass filter 16 and band limiting circuits in 22 for limiting the frequency range of operation. The system also includes noise rejection circuitry 24 for discriminating between pulses produced by detection of the tag circuit and spurious signals of different periodicity.
Patent GB-822576-A (GB)
Title: A process for preparing felt or board of glass fibre and bituminous material
Inventor: HUGHES ROBERT IVOR
IPC: D04H1/4218
Filed: 1956-11-26
Abstract: 822,576. Agglutinated fibrous sheet materials; waterproofing; coating glass fibrous materials. SHELL RESEARCH Ltd. Oct. 21, 1957 [Nov. 26, 1956], No. 36079/56. Classes 96 and 140. A water-resistant glass fibre-bituminous material felt or board is made by pretreating the glass fibre with a polyvalent metal salt and subsequently impregnating with a bituminous material. The salt may be, e.g. ZnCl 2 , Pb(NO 3 ) 2 , Al 2 (SO 4 ) 3 , SnCl 4 , CuSO., or zinc acetate, and is applied in solution in water or other solvent, e.g. methyl alcohol, ethyl alcohol, ether or acetone. The solution, if aqueous, may contain between 0.1 and 10% by weight of the salt and may be acidic. The amount of salt deposited on the fibre may be between 0.1 and 50 parts by weight per 1000 parts of fibre. The bituminous material is a native or pyrogenous substance containing bitumens or pyrobitumens; examples are soft native bitumens, residual oils, soft blown bitumen, bitumen fluxed with vegetable oil, e.g. linseed oil, coal tar, water-gas tar and oil-gas tar. The finished felt may be coated with similar materials, or with bituminous materials of a harder consistency and higher fusing-point, or with bitumen emulsions or rubber-containing mixtures. The glass fibres may be formed into a fibrous layer which may be woven or felted (1) before treating with the metal salt, (2) after treating with the metal salt but before impregnating with bituminous material, or (3) after impregnating with bitumen. The glass fibre after treatment with the polyvalent metal salt may be heated, and the impregnation may be carried out at an elevated temperature and at elevated or reduced pressure, e.g. by drawing through a tank of molten bitumen and then removing excess bitumen by passing through heated press rollers. The fibrous layer may be impregnated with powdered bitumen and then heated. Mixtures of glass fibres and other (e.g. asbestos) fibres may be used. The pretreated glass fibres may be dispersed in water and a bitumen emulsion added and precipitated by the addition of slaked lime, alum or sugar of lead.
Patent GB-1124921-A (GB)
Title: Improvements in electric storage heaters
IPC: F24H7/00
Filed: 1964-09-03
Abstract: 1,124,921. Electric space storage heaters. UNIDARE Ltd., and P. H. GREER.. 2 Dec., 1965 [3 Sept., 1964], No. 36192/64 Heading F4U. An electric space storage heater 1 is supported above the floor 3 adjacent a wall 2 by a cantilever support member 4 to provide an open space between the heater body and the floor. A Z-sectioned cantilever may alternatively be used (Fig. 3, not shown), or the heater may be supported off the floor by two spaced V-shaped members (Fig. 5, not shown).