baber/WOPTO huggingface dataset:
Patent GB-1172981-A (GB)
Title: Improvements relating to Capacitors
Inventor: LAWSON WILLIAM GRAHAM
IPC: H01G4/22
Filed: 1965-12-14
Abstract: 1,172,981. Treating polymers. ELECTRICAL RESEARCH ASSOCIATION. 14 Dec., 1966 [14 Dec., 1965], No. 53071/65. Heading C3P. [Also in Division H1] The intrinsic strength of a polymeric material consisting of microcrystalline regions separated by spaces without ordered structure but which may be occupied to a greater or lesser extent by polymer chains, but having lower density than the microcrystalline regions, is increased by impregnating the polymeric material with a liquid that on sufficient cooling after impregnation into the polymeric material will result in an increase in the electric strength of the polymeric material, and cooling the impregnated material to effect such increase. Specified polymeric materials are polyethylene, polypropylene, polytetrafluoroethylene and polyesters such as polyethylene terephthalate. The liquid is preferably one which has a large temperature coefficient of viscosity, particularly one which becomes at least highly viscous, if not solid, on cooling. Preferred liquids are tri-, penta- and hexachlorodiphenyl. The products may be used as dielectric in capacitors.
Patent GB-1079323-A (GB)
Title: Improvements in and relating to a method for bonding of semiconductor devices to substrates
IPC: H01L21/58
Filed: 1965-12-14
Abstract: 1,079,323. Silicon - ceramic seals; soldering. UNITED AIRCRAFT CORPORATION. Dec. 14, 1965 [Dec. 30, 1964], No. 53119/65. Headings B3R and B3V. A silicon semi-conductor is bonded to a ceramic substrate by depositing a gold film on the substrate, positioning the semi-conductor on the film, and heating the assembly to form a gold-silicon eutectic. The assembly can be subjected to pressure and agitation while heated to a temperature of 425 C. Alternatively, a jet of hydrogen at 450 C. can be impinged on the assembly after heating the assembly to 300 C. Both the substrate and silicon can be cleaned prior to bonding by agitating them ultrasonically in an alcohol solution, the semi-conductor then being placed in a hydrofluoric acid bath.
Patent GB-1246518-A (GB)
Title: Seismic gas exploders
Inventor: THIGPEN BEN BURT
IPC: F42B3/00
Filed: 1969-10-30
Abstract: 1,246,518. Generating combustion products under pressure. WESTERN GEOPHYSICAL CO. OF AMERICA. Oct. 30, 1969 [Nov. 29, 1968], No.53314/69 Heading F1L. [Also in Division H4] A seismic energy generator having a combustion chamber in which a combustible mixture is exploded is provided with a device actuated by the force of the explosion for automatically expelling liquid combustion products from the chamber. As shown in Fig.2 the generator combustion chamber comprises an expandable rubber sleeve 16 with end seals 18, 22 linked by tubes 80 through which cooling water is funnelled when the generator is towed for marine exploration. A spring-loaded check valve 62, detailed in Fig. 3, is fixed to the lower seal 18 for expelling accumulated liquid 86, and a filter 58 prevents rubber particles (detached from sleeve 16) from reaching valve 62. Ballast weight 40 maintains the generator attitude so that the valve is lowermost. Combustible-gas supply valves, combustion gas exhaust valves and a spark-plug are housed in cover 28. Reference has been directed by the Comptroller to Specification 1,164,402.
Patent GB-1306582-A (GB)
Title: Floating installation having means for the storage and hancling of  a flexible line
IPC: B63B35/03
Filed: 1970-11-11
Abstract: 1306582 Taking up slack in flexible elements INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS 11 Nov 1970 [19 Nov 1969] 53676/70 Heading B8B A device for storing and handling a flexible discharge pipe on a tanker vessel, in which one end 5 of the pipe is secured to the vessel storage tank and the other end extends from the vessel through a hawse 6, comprises a reversing idler pulley 1 around which the pipe is looped and which is movable along a rail 4 under the control of a cable 2 of a winch 3, to store and to eliminate slack in the pipe. The run of pipe extending from the pulley 1 to the hawse 6 is supported on rollers 7. In another embodiment, the pipe is looped over a plurality of slidable pulleys whereby a longer length of pipe can be accommodated in the vessel, each pulley being movable by a separate control cable, or all the pulleys being mounted on a single movable trolley.
Patent GB-1513656-A (GB)
Title: Microwave devulcanization of rubber
IPC: C08J11/12
Filed: 1976-12-23
Abstract: 1513656 Micro-wave devulcanization of rubber GOODYEAR TIRE & RUBBER CO 23 Dec 1976 [6 Jan 1976] 53712/76 Headings C3E and C3L A sulphur-vulcanized elastomer composition containing polar groups is devulcanized by applying a controlled dose of microwave energy in an amount sufficient to sever substantially all carbon-sulphur and sulphur-sulphur bonds and insufficient to sever a significant amount of carbon-carbon bonds. Examples are given of the devulcanization of EPDM hose end trains, butyl tyre bladders and tyre tread materials.
Patent GB-1321526-A (GB)
Title: Safety fuse cords
IPC: C06C5/06
Filed: 1971-11-19
Abstract: 1321526 Explosive compositions DYNAMIT NOBEL AG 19 Nov 1971 [20 Nov 1970] 53951/71 Heading C1D [Also in Division F3] An explosive charge constituting the core of a safety fuse cord comprises Nitropenta and a phlegmatizing agent selected from cryolite, alkali metal, alkaline earth metal and ammonium halides, sulphates, bicarbonates, carbonates and phosphates and alkaline earth metal oxides. At least 60% of the Nitropenta passes through a mesh screen of 0À074 mm. mesh. A preferred composition comprises Nitropenta and 5-15%, particularly 10%, of cryolite.
Patent GB-1480078-A (GB)
Title: Electrical cable incorporating traction relief
IPC: H01B7/22
Filed: 1974-12-13
Abstract: 1480078 Electric cable SCHWEIZERISCHE ISOLA-WERKE 13 Dec 1974 [18 Dec 1973] 54047/74 Heading H1A An electric cable comprises conductors 1 surrounded by a plastics casing 3 in which is embedded a traction relief member 4 consisting of warp (5) and weft (6) elements (Fig. 2, not shown), woven into a sheath which consists at least partly of electrically conducting or semiconducting elements. In one embodiment all the weft elements and at least one warp element are electrically conducting or semi-conducting, the remainder of the warp elements being non- conducting plastics or glass. The conducting or semi-conducting elements may be wires, strands, bands or threads or have a non-conducting centre, with a metal surround (Figs. 4 and 5, not shown) of metal-lined paper or metal-lined plastics foil. The cable may also have an insulating inner casing 2. Various combinations of conducting, semi-conducting and non-conducting elements are given.
Patent GB-1368646-A (GB)
Title: Commutatorless dc motor
IPC: H02P6/08
Filed: 1971-11-22
Abstract: 1368646 Control of brushless motors SIEMENS AG 22 Nov 1971 [5 Dec 1970] 54178/71 Heading H2J [Also in Division G3] A brushless D.C. motor has stator windings, each in series with a semi-conductor element, each series arrangement being connected in parallel and, via a common resistance, across the motor power supply; means to control the semi-conductor elements in dependence upon the rotor position, and a winding current control circuit having a desired current input and an actual winding current input from the common resistance. In the embodiment shown, stator windings W1-W4 are connected across the motor supply via power transistors T1-T4 and a common resistance R1, transistors T1-T4 being turned on in dependence upon rotor position by Hall generators H1, H2 and associated transistors T5-T8. The current control circuit includes transistors T9-T11, fed with a desired current input from transistor T12 and an actual current input to transistor T11 from across common resistance R1. Upon starting, transistor T12 is turned on by a speed reference input Un, switching on transistors T10, T9 with one of transistors T1-T4, as determined by the rotor position, becoming fully.conductive, thus current flows through the respective winding and the rotor moves. The actual winding current is fed-back to vary the bias on transistor T11 and thus the bias on transistor T10, to maintain the current through each winding constant by controlling the conduction of transistors T1- T4. As the rotor rotates, a speed dependent e.m.f. induced across the non-conducting windings is fed back via diodes D1-D4 and resistor R21, and compared with the speed reference Un to modify the desired current signal from transistor T12 and provide speed regulation. If the maximum winding current, set by resistor R13 in the collector circuit of transistor T12, is maintained for a preset time, a voltage from divider R19, across common resistance R1, charges R.C. circuit R18, C4 to turn on transistor T14 and thus shorting the desired input, by transistor T13, and stopping the motor, transistor T14 being held on by transistor T15. Alternatively, the motor may be stopped manually by providing a signal to input St. The motor may be subsequently started by use of reset key b, which, when depressed, turns off transistor T14.
Patent GB-1328848-A (GB)
Title: Alternating-current control devices
IPC: H02M5/257
Filed: 1970-11-13
Abstract: 1328848 Control of AC motors AUCO NV 13 Nov 1970 [17 Nov 1969] 54209/70. Heading H2J A motor L driving a fan is in series with a control circuit including a triac T fired via a diac D, the phase angle of firing being determined by the charging of capacitor C 1 , whose charging characteristics are controlled via circuit TR comprising a pair of transistors in parallel in opposite polarity senses, each in series with a diode, and having their bases connected together to form a control input, alternate half waves passing through alternate transistors. To the control input of TR is connected a network R2, R3, R4, R5, R6, C 3 , C 4  ensuring that the charging waveform of C 1 , Fig. 3 (not shown) has a monotonic characterictic for almost the whole of each half cycle, enabling almost complete control of the firing angle, Fig. 5b (not shown). The slope of the upper portion of the charging curve is set by potentiometer R 4  to vary the sensitivity of control, Figs. 6b, 6d (not shown), the controllable range being set by variable resistor R 3 . For control in response to temperature, R 4  may be temperature dependent, so that the sensitivity of control is temperature dependent, giving control over the same motor speed range, for variable temperature range, Figs. 6a-6d, (not shown). By increasing the value of C 3  and decreasing that of R 5 , the sensitivity may be made dependent on phase angle Fig. 7b (not shown) giving the speedtemperature characteristic of Fig. 7a (not shown). The development of the network R2-R6, C2, C3 is disclosed with reference to Figs. 1, 2 and 5a (not shown). C 2  is a compensating capacitor, for the inequalities in the elements of TR, C5-R7 being an oscillation suppressor, C6 and inductor S being a mains impulse suppressor.
Patent GB-1414134-A (GB)
Title: Wheel chairs
IPC: A61G5/04
Filed: 1971-11-24
Abstract: 1414134 Wheelchair H CRAGG 23 Nov 1972 [24 Nov 1971] 54518/71 Headings B7B B7D and B7H An electric drive means for a wheelchair includes a wheel plate 37 mounted on the frame 3, the plate 37 carrying a wheel 2 and a battery driven electric motor 67 which drives the wheel through gearing including a pair of pinions, the motor 67 and its associated pinion 61 being movable to disengage the pinion 61 from the wheel pinion 36 to allow free rotation of the wheel 2. As described the wheelchair has two  free running front castor wheels 1 and two rear wheels 2, each rear wheel 2 being driven by an electric motor 67. Each wheel plate 37 is mounted on a frame member 3 by a bracket 43 including a resilient bushing 42 which provides the suspension for each wheel 2. Each wheel 2 has a hub 31 (Fig. 5) which is journalled on a spindle 33 fixed to the wheel plate 37 and a pinion 36 is fixed to the wheel hub 31. A support plate 47 is pivoted to the wheel plate 37 at 48 and carries an electric motor 67 whose output shaft 66 drives, via worm 65 and worm-wheel 63, a shaft 59 carrying a pinion 61. The support plate 47 can be moved about pivot 48 by a cam 51, operated by handle 54, between two extreme positions in the first of which the pinion 61 engages pinion 36 so that the motor 67 drives the wheel 2 and in the second of which the pinion 61 is disengaged from the pinion 36 to allow free rotation of the wheel 2. Both motors 67 are controlled by a single control lever 71 which can operate both motors 67 in unison for straight line travel or can operate the motors 67 differentially for steering. The wheel chair may be of the foldable type and includes a pair of rigid side frames each of which includes an L-shaped frame member 3 having a handle 4, a front member 7 and a seat member 13. A seat panel made of flexible material extends between the seat members 13 and a similar back rest panel 21 extends between uprights 14. The two side frames are connected by hinged links which allow the chair to be folded. The chair also includes a pair of detachable armrests 16, a pair of detachable foot rests 8 and a clip-on carrier 22 which carries the batteries 24.
Patent GB-1187170-A (GB)
Title: Rear View Mirror Assembly for Vehicles.
Inventor: GIEBLER GEORG FRIEDRICH
IPC: B60R1/08
Filed: 1968-11-20
Abstract: 1,187,170. Vehicle rear view mirror. G. F. GIEBLER. 20 Nov., 1968 [13 March, 1968], No. 54945/68. Heading B7J. A vehicle rear view mirror assembly comprises a mounting plate 3 securable to the vehicle body by means of a ball 12 on an arm 11, and a plastics mirror frame 1 having a reinforced grooved rim 2 for carrying the mirror glass 2a, the frame 1 being tiltable relative to the mounting plate 3 into one of two alternative stable positions by means of a lever 4, the frame being maintained in either one of these positions by virtue of the resilience of the material of the frame. The lever 4 has trunnions 4b engaging in bearings 7 in the frame 1 and a nose 4a engaging in a recess in the plate 3. The ball 12 is adjustably clamped in a socket, split at 13, in the mounting plate 3 by means of screw 15. The mounting plate 3 is secured to the frame by means of shoulders 10 engaging in bearing brackets 6. In a second embodiment shown in Fig. 5 a lever 8 has a nose 8a engaging in a recess in the mounting plate 3 and is joined to the mirror frame 1 by an integral hinge 9. In a further embodiment described with reference to Figs. 7 and 8 (not shown) the mounting plate is secured to the frame by means of integral flexible tongues on the frame engaging in slots in the mounting plate.
Patent GB-1138340-A (GB)
Title: Improvement in poultry feeding
IPC: A23K1/16
Filed: 1965-12-29
Abstract: 1,138,340. Poultry feed. TAKEDA CHEMICAL INDUSTRIES Ltd. 29 Dec., 1965 [29 Dec., 1964], No. 55083/65. Heading A5B. A poultry feed contains 5-100 mg/kg of a compound of the formula:- where R is lower alkyl, (i.e. up to 6 carbon atoms) tetrahydrofuryl, or tetrahydropyranyl, thereby raising the rate of egg production, fertility, and hatchability of the poultry. Specified examples of suitable compounds are thiamine propyl disulphide, thiamine butyl disulphide, thiamine heptyl disulphide, thiamine tetrahydrofurfuryl disulphide, and thiamine tetrahydropyranyl-2 methyl disulphide. They may be employed in the form of the free base or for example as the hydrochloride nitrate or sulphate.
Patent GB-1287506-A (GB)
Title: Arginine-potassium phosphocitro-glutamate
Inventor: BOCHER DOMINIQUE
IPC: C07F/
Filed: 1970-11-23
Abstract: 1287506 Tonics D BOCHER and R FAURE 23 Nov 1970 [21 Nov 1969] 55665/70 Heading A5B [Also in Division C2] Pharmaceutical compositions having a tonic effect being in conventional forms for oral, rectal or parenteral administration comprise a complex arginine potassium phosphocitroglutamate salt of composition of formula I and diluents or carriers.
Patent GB-1204357-A (GB)
Title: Lithium salts of butyric acid derivatives
Inventor: GERSON IRVIN MAYO
Filed: 1967-12-07
Abstract: 1,204,357. Lithium salts of butyric acid derivatives. I. M. GERSON. 7 Dec., 1967 [27 Jan., 1967], No. 55800/67. Heading C2C. Novel lithium salts of formula wherein R is H or OH, are prepared by reaction of the corresponding acid with lithium hydroxide or carbonate.
Patent GB-1068838-A (GB)
Title: Step by step automatic machines for producing an electrode assembly for a discharge lamp incorporating a u-shaped bimetallic starting element
IPC: H01J9/02
Filed: 1963-10-22
Abstract: 1,068,838. Making electrode assemblies for discharge lamps. EGYESULT ISSOLAMPA ES VILLAMOSSAGI RESZVENTARSASAG. Oct. 22, 1963 [Oct. 27, 1962], No. 55883/66. Divided out of 1,068,836. Heading H1J. [Also in Division B8] In a turret machine for manufacturing an electrode assembly for a discharge lamp incorporating a U-shaped bimetallic starting element in which a pair of electrodes is first threaded on to a glass bead which is then melted on to them and painted with an aluminium suspension as described in Specification 1,068,836, a U-shaped starting element having a hump in one leg is fed from a vibrating container 49 along a spiral path having sections 51, 52, 56 each separated by a step, the first step causing starting elements 59 lying on their sides to be returned to the container and the second step and an associated baffle-plate 55 causing rejection of starting elements in which the humped leg is downwards, the remaining starting elements tilting into a vertical position on a path 57 along which they slide to a feeding point on the machine.
Patent GB-1254797-A (GB)
Title: Automatic milling machines
Inventor: BOUCHERIE GERARD BENONI
IPC: B23Q35/10
Filed: 1969-11-14
Abstract: 1,254,797. Copy-milling. G. B. BOUCHERIE. 14 Nov., 1969 [18 Nov., 1968], No. 55904/69. Heading B3K. In a copy milling machine in which the workpiece is rotated at constant velocity and the milling cutter is moved relative thereto (or the workpiece is moved relative to the cutter) in accord with the shape of a template rotating coaxially with the workpiece, means are provided for imparting additional relative displacement either to the workpiece or to the cutter to control the cutting speed at a constant value. A variety of alternative embodiments are envisaged (Figs. 5-16) in which to provide the template-controlled displacement either the workpiece or the cutter may be mounted on a reciprocable slide or pivotally swinging lever while the additional displacement to regulate the cutting speed may be provided for by mounting the cutter or workpiece or their mounting slides or swinging levers on further slides or swinging levers, the movement of which is controlled by a suitably designed cam or hydraulic or electrical control means. In a particular embodiment the workpiece 4 is hydraulically clamped coaxially with a template 73 and driven at constant speed from a gear-box 65. Two milling cutters 59, 60 are carried together with respective cam followers 63, 64 on pivotally arranged arms 55, 61, 56, 62 supported from sliding tables 39, 40. Further cams 76, 77 arranged coaxially with the workpiece below the gear-box 65 control the linear sliding movements of the tables 39, 40 through followers 87, 88 and suitable linkages (Fig. 20, not shown) in order to regulate at substantially constant value the cutting speed. The tables 39, 40 may be retracted (Fig. 19) by means of hydraulic jacks 45, 46 to allow for ejection of a finished workpiece into a discharge gutter 109 and supply of a fresh blank from a magazine 106, the cutters 59, 60 being arranged to swing clear of the work during retraction by co-operation of the followers 63, 64 with guides 104, 105. The cutters 59, 60 are formed to provide a desired profile on the edge face being machined. Cams or templates may be provided for displacing the milling heads vertically on the shafts 53, 54.
Patent GB-1373459-A (GB)
Title: Gas turbine engine
IPC: F02C7/22
Filed: 1972-12-11
Abstract: 1373459 Gas turbine engine fuel systems WESTINGHOUSE ELECTRIC CORP 11 Dec 1972 [6 Jan 1972] 57004/72 Heading FIG A gas turbine engine comprises a combustion chamber having an atomizing type fuel nozzle to which fuel is supplied and atomized by means of pressurized air. A valve is provided for controlling admission of atomizing air, also a controller for  controlling the valve and having means for opening the valve in response to an operating condition indicative of the need for atomizing air by the fuel nozzle, and a timing device adapted to be . actuated by the valve opening means and to close the valve after a predetermined time. The engine shown comprises an atomizing fuel nozzle 13 to which high-pressure air is supplied. The valve 15 is controlled by a diaphragm unit 23 to which  control fluid is supplied through line 17, regulating valve 19 and solenoid-controlled valve 21. The valve 21 is controlled by a controller 22 which incorporates a timer device and which first acts to open the valve 21 and thus the valve 15 when a certain engine parameter is sensed indicative of the need for atomizing air to be supplied to the fuel nozzle, and then after a predetermined time, acting to close the valve 21 which in turn causes closure of the valve 15. The compressor pressure is sensed by a device 25 which passes a signal to the controller 22, the controller then causing the solenoid valve 21 to open so that control fluid passes to the diaphragm 23 to open the valve 15 so that atomizing air may flow to the fuel nozzle 13.
Patent GB-1327603-A (GB)
Title: Automatic firearm
IPC: F41A5/18
Filed: 1970-12-01
Abstract: 1327603 Automatic firearms WERKZEUGMASCHINENFABRIK OERLIKONBUHRLE AG 1 Dec 1970 [19 Dec 1969] 57019/70 Heading F3C An automatic firearm comprises a breechblock 18 housed in a breechblock carrier the assembly formed thereby being axially movable within a breech casing. A coupling element 72 is provided for coupling the breechblock and breechblock carrier together after the unlocking of the breechblock from the barrel of the firearm and during the recoil of the breechblock and breechblock carrier assembly. The coupling element 72 engages in a groove 56 of the breechblock and is urged into the groove during the initial movement of the breechblock and breechblock carrier assembly in recoil by co-operation with intermediate inclined portion 65 of a first cam face which has a rearward horizontal portion for supporting the coupling element 72 in the remainder of the recoil phase. A second cam face is provided which is horizontal along its length for keeping the coupling element 72 in engagement with the groove 56, means being provided for transferring the drive for the coupling member from the first to the second cam face. Means are also provided which are effective prior to the relative movement of the breechblock relative to the breechblock carrier in the breechblock locking phase for transferring the drive of the locking element 72 from the second cam face to a third cam face 68 which causes the locking element 72 to be withdrawn from the groove 56 and brings the drive of the locking element 72 into co-operation with a forward horizontal portion 64 of the first cam face against which it is held by the lower surface of the breechblock. The means for transferring the drive of the locking element 72 from and to the various cam surfaces comprise surfaces provided on rails of which the cam surfaces are part and at right angles to the surfaces (Fig. 13, not shown). The drive for the locking element consists of a slipper 77 which is movable transversely of the locking element between two positions in which the slipper is releasably latched, the ends of the slipper being formed as cam followers. The firearm has a recoiling barrel and separation of the breechblock and barrel is effected by gas operation (Fig. 2, not shown).