baber/WOPTO huggingface dataset:
Patent GB-1057226-A (GB)
Title: Improvements in or relating to endless articulated tracks for vehicles
Inventor: KROOGOR BORIS VASILJERICH
IPC: B62D55/205
Filed: 1963-11-22
Abstract: 1,057,226. Vehicle endless tracks. ALTAISKY TRAKTORNY ZAVOD " M. I. KALININ." Nov. 22, 1963, No. 46161/63. Heading B7H. In an endless track the adjacent links 1, 2 of which are interconnected by pins 7, 8 and a tiebar 5, a resilient seal 11 is interposed between the links and tie-bar. The seal is compressed by the tapered sides of the chambers 9, 10 in the ends of the links and has a pair of annular projections 12 engaging the edges 13 of the links.
Patent GB-1049188-A (GB)
Title: Method of preparing organopolysiloxanes
IPC: C08G77/06
Filed: 1963-11-26
Abstract: An organopolysiloxane, curable to an elastomer on exposure to moisture, is made by reacting (A) a siloxane of the average general formula <FORM:1049188/C3/1> wherein each R is a monovalent saturated or unsaturated hydrocarbon (h.c.), halo-h.c. or cyanoalkyl radical, x has an average value of from 0.99 to 1.01, y has an average value of from 1.99 to 2.01, x + y is 3.0, and n is at least 2, the polymer having a viscosity at 25 DEG  C. of at least 25 cs., with (B) a silane of the formula RmSi(OR1)4- m, wherein R1 is R or a radical containing C, H and O atoms, the latter being present as ether linkages, or a halo-derivative thereof, and m is 0, 1 or 2, or a partial hydrolysate thereof, in the presence of (C) 0.01 to 5% (by wt. of (A)) of a P-N compound of the formula (PNX2)q, <FORM:1049188/C3/2> or <FORM:1049188/C3/3> where q is an integer of at least 3, Z and Z1 are monovalent alkyl, aryl, alkaryl or aralkyl radicals or H atoms, at least one Z or Z1 being an organic radical, Z11 is an alkyl, aryl, alkaryl or aralkyl radical and X is a halogen atom, there being at least a sufficient proportion of (B) in the reaction mixture that there is at least 0.5 mol of Si-bonded -OR1 groups per mol of Si-bonded -OH groups in siloxane (A), the reaction being effected in the absence of water. The catalysts (C) are disclosed in Specification 765,744.  The reaction is preferably effected at 10 DEG  to 80 DEG  C., and, if desired, can be carried out in inert solvents, and in the presence of inert fillers and other additives.  Examples are given.  Uses.-As additives for modifying crepeageing of heat curable siloxane elastomers containing active fillers; as mould release agents; as adhesives for glass fibres and glass cloth; as impregnating agents for paper, textiles or leather; as heat-exchange materials. The products form elastomers on exposure to moisture, in the presence or absence of fillers, usual additives or cure accelerators, e.g. metal carboxylates, titanium esters (disclosed in Specification 841,826), amines, aminosiloxanes (disclosed in Specification 684,296), carboxylic acids and organic peroxides; the elastomers can be used as protective coating, thermal and electrical insulation, potting materials, dental impression material and for textile films and for making foils, moulds and laminates.
Patent GB-1268054-A (GB)
Title: Improvements in or relating to a circuit arrangement for starting an electrical discharge lamp from an alternating current supply
Inventor: CERESA ATTILIO
IPC: H05B41/04
Filed: 1968-10-03
Abstract: 1,268,054. Supply circuits for discharge lamps. GENERAL ELECTRIC CO. Ltd. 23 Oct., 1969 [3 Oct., 1968], No. 47003/68. Heading H2H. A starting circuit for a discharge lamp comprises a capacitor which is charged through a diode from an A.C. source. A gate-controlled switching device is fired when the voltage across it reaches a given value, and the capacitor is thereby discharged into a pulse transformer, the resulting oscillations being superposed on the A.C. supply to start the lamp. In the circuit shown in Fig. 1, a capacitor C 1  is gradually charged through a diode D connected in antiparallel with a thyristor T. During non- conductive half-cycles, the voltage across the diode approaches the peak-to-peak supply voltage, and eventually a voltage sufficient to fire the thyristor appears at the centre tapping of a voltage divider R 1 , R 2 . When this happens, the capacitor C 1  discharges through a second capacitor C 2  and the primary L 1  of pulse transformer PT, several oscillations occurring before the thyristor is turned off by insufficient voltage at its gate. In addition to these oscillations, which are amplified by the transformer PT, higher frequency ringing oscillations occur due to the leakage inductance and self-capacitance of the transformer and leads. After the lamp 1 has started, the voltage across it -is insufficient to allow further operation of the thyristor. A power factor correction capacitor C p  is connected across the supply, while a Zener diode may be connected to the gate of the thyristor, and a suppressor choke may be connected in series with the transformer PT. In modifications, Figs. 3 and 4 (not shown), the capacitor C 1  may be omitted and the second capacitor C 2  then stores the charge.
Patent GB-1380554-A (GB)
Title: Treatment of poultry
IPC: A23K1/165
Filed: 1973-10-09
Abstract: 1380554 Treating moulting hens EISAI CO Ltd 9 Oct 1973 [9 Oct 1972] 47074/73 Heading A5B A method of promoting the resumption of egg-laying by a moulting domestic hen comprises administering to the hen lutenising hormone-releasing hormone. The hormone may be administered by injection, e.g. as a solution in physiological saline containing from 1.0 to 30γ of hormone per millilitre.
Patent GB-1082807-A (GB)
Title: Hydraulic machines with reciprocatory pistons
Inventor: SCOTT GEORGE WILLIAM PEARSON
IPC: F01B3/00
Filed: 1964-11-19
Abstract: 1,082,807. Reciprocating pumps and motors. SERCKR. & D. Ltd. Nov. 19, 1964, No. 47115/64. Heading F1A. The cylinders 12a, Fig. 3, of a revolving cylinder block 12 of an hydraulic pump or motor communicate successively with two ports 16 and 17, Fig. 2, formed in the end-plate 15 of the machine housing and the invention is concerned with an hydrostatic thrust bearing between the inner surface of the plate 15 and the adjacent surface of the block 12, recesses 21 in the plate being supplied with pressurized liquid from the port 16 via a groove 22 and fine bores 23; to counteract the tendency for the pressurized liquid to be displaced to one end of each recess 21 in use, the plate 15 is provided with grooves 26a, 26b extending adjacent the ends of the recesses 21 and communicating with a part of the machine in which liquid, in use, is at a pressure lower than that within the recesses 21. Alternatively, the recesses and the grooves may be formed in the adjacent surface of the block. The grooves 26a, 26b, which open into the space around the block which is connected to a drain, are interconnected by further grooves 24, 25. During operation of a motor, when the block rotates in an anti-clockwise direction as viewed in Fig. 2, the pressure buildup in the ends of the recesses 21 adjacent the grooves 26a is reduced because no high-pressure liquid can escape from these ends without entering one of the grooves 26a where the liquid loses its pressure. The grooves 26<SP>b</SP> act in a similar way during operation of a pump. To reduce any similar pressure build-up in the ports 16 and 17, a further groove 27 is provided and is connected to the space between the block and the shaft by way of radial grooves 28. A hydrostatic journal bearing .20, Fig. 1 (not shown), for the block 12 is supplied with high-pressure liquid from port 16.
Patent GB-1371364-A (GB)
Title: Direct view cathode ray tubes
IPC: H01J29/41
Filed: 1972-10-05
Abstract: 1371364 Modulating light DEFENCE SECRETARY OF STATE FOR 5 Oct 1972 [9 Oct 1971] 47118/71 Heading H4F [Also in Division H1] A direct view bi-stable c.r.t. comprises a flood gun, an addressing gun, a collector 15, and a segmented target of high secondary electron emission coefficient wherein changes of potential of individual segments (5 to 10) drive elements of a liquid crystal display matrix from a clean state to a scattering or opaque state or vice versa or by induced rotation of polarization. The liquid crystal comprises a film of nematic or chloreatoric type and one composed with smectic types. Fig. 1 (not shown) utilizes D.C. (30V) or low or high frequency A.C. High frequency A.C. promotes rapid clearing. Fig. 2 (not shown) includes flood gun (13) emitting on to secondary electron emissive target (16), the secondary electrons being collectod by electrode (15) at 150V, writing gun (14) selective changing segments (16) from flood gun to collector electrode potential. Fig. 3, includes insulator 17 glassplate 2, and tin oxide conductor 3 preferably at same potential (e.g. earth) as gun (13). In Fig. 4, (not shown) the collector 15 is biased by a 150V D.C. source and a low frequency (<100 Hz) A.C. bias, peak A.C. from 10 to 50V, dielectric layer (18) separating segments 5 to 10 from corresponding electrodes (22), forming capacitor (19), and removing the above D.C. component. Fig. 5 (not shown) includes a high frequency source (28) parallel with D.C. source (25), conducting layer 3 being biased to the same D.C. potential. The electric field may induce rotation of light polarization with glassplate 2 and insulating plate 17 acting as a pair of crossed or parallel polarizers depending on whether dark on light or light on dark display is required. The electrode segments are light reflecting when observer and light source are on the same side of the screen, while target segments and plate electrodes are transparent for a transmission arrangement.
Patent GB-1080649-A (GB)
Title: Method to increase adhesion of a polyolefin coating to substrates
IPC: B32B27/00
Filed: 1964-11-19
Abstract: 1,080,649. Laminates. NATIONAL DISTILLERS & CHEMICAL CORPORATION. Nov. 19, 1964 [Nov. 21, 1963 (2)], No. 47216/64. Heading B5N. [Also in Divisions B2 and H1] A method of treating the surface of a substrate to improve the adherence of the surface to a subsequently applied extrusion coating of a polyolefin plastics material comprises subjecting the surface to the action of a corona discharge at a voltage of 10,000 to 25,000 volts, e.g. 10,000 to 14,000 volts, from an electrode spaced from 0À25 to 0À25 inch away from the surface, the substrate being advanced past the electrode at a speed of 200 to 600 feet per minute. The substrate may be a polyolefine, e.g. polypropylene, polystyrene, ethylenepropylene, or ethylene-butene copolymers, paper, Kraft paper or paperboard. The substrate may be in the form of a web 2 and is passed on to a support, e.g. treater roll 9, formed of electrically conductive material with one surface of the web facing the support and the surface to be treated facing outwardly towards the electrode 10, corona discharge being applied from the electrode, which may be spaced 0À03 to 0À08 inch from the surface of the substrate, upon the outwardly facing surface of the web and an extruded coating of a polyolefin thereafter being applied on to the treated surface of the web from die 15, the melt 16 being forced on to the substrate by rolls 12 and 17. The coated substrate 18 may then be trimmed by slitter roll 20 and slitters 21. The term " substrate " may be a self-supporting web or a layer or coating upon another material. The coating may be of polyethylene, polypropylene, or copolymers of ethylene or propylene with olefins such as butene, pentene and hexene, and chlorinated polyethylene. The polyolefin coated substrate is heat sealable and may be used for packaging, construction material and decorative finishes.
Patent GB-1525233-A (GB)
Title: Temperature measurement apparatus
IPC: G01K7/02
Filed: 1975-09-22
Abstract: 1525233 Measuring temperature of engine part ROLLS-ROYCE MOTORS Ltd 22 Sept 1975 [31 Oct 1974] 47290/74 Heading GIN An apparatus for measuring the temperature of an engine part, e.g. a piston 1, while in cyclic motion comprises a series of thermocouples adapted to be embedded in the part, a plurality of contacts 25 arranged to move with the part and a plurality of fixed contacts 27 adapted to be disposed so that, in use, the first mentioned contacts 25 engage the fixed contacts 27 once during each cycle of the part. Means are provided for receiving the pulses produced by the repeated making and breaking of the two sets of contacts and for determining the temperature of the thermocouples therefrom. The contacts of each set of contacts may be mounted in one or two straight rows Figs. 3 and 4 (not shown), the fixed contacts 27 being pre-loaded against the carrier thereof. The fixed contacts may be of berylium copper with the carriers of the contacts being of an insulating material, e.g. a epoxide laminate. The contacts may all be silver tipped. Intermediate contacts in a row are each connected to two adjacent thermocouples Fig. 6B (not shown). The hot junction of each thermocouple is housed within a threaded member Fig. 5 (not shown) the member being in turn housed within a tapped bore in the piston Fig. 1 (not shown). The cones of the thermocouple are sheathed and mineral insulated. The fixed contacts are connected to the pulse receiving means Fig. 7 (not shown) which comprises a scanner for successively reading the pulses at the contacts and a digital channel display inductor associated with the scanner indicates which thermocouple is being scanned or monitored at any given time. A compensation signal corresponding to the temperature of the cold junction of the thermocouples which are situated, in use, remote from the engine, is fed into the scanner so that the true temperature measured by the thermocouples may eventually be recorded. The signals from the scanner pass to a sample and hold circuit, the output of which is a D.C. signal. The D.C. signal enters an amplifier and linearizor unit, the signal from the unit being used to drive a digital meter to display the temperatures of the thermocouples directly in degrees centigrade. The signal from the unit may also be used to drive a chart recorder or analogue meter. The scanner may be controlled by a datelogging system.
Patent GB-1409617-A (GB)
Title: Rotary regenerative heat exchanger in particular for a gas turbine
IPC: F28D19/00
Filed: 1973-10-11
Abstract: 1409617 Thermal regenerators BENNES MARREL 11 Oct 1973 [18 Oct 1972] 47453/73 Heading F4K. In a rotary thermal regenerator, a layer 4 of flexible refractory material such as asbestos and a plurality of obliquely extending drive transmitting members 14 are located between a ceramic disc 1 and a surrounding annular steel ring gear 2. The layer 4 is clamped in position by a plurality of side-by-side collars 5, 6 each of which has its opposite ends joined together by means of blocks 8, 9 and connecting bolts 10. Resilient washers 12 are disposed between the bolt head 11 and block 9. Each drive transmitting member 14 is hinged to the annulus 2 by way of two headless screws 15 and to the collar block 8 by way of a transverse pivot pin 13. The collars 5, 6 are angularly offset with respect to one another so as to evenly distribute the members 14 around the ceramic disc.
Patent GB-1218554-A (GB)
Title: Helicopter landing gear
Inventor: BRIDGES DENNIS GILBERT
IPC: B64C25/62
Filed: 1967-10-19
Abstract: 1,218,554. Aircraft undercarriages. DOWTY ROTOL Ltd. 23 Sept., 1968 [19 Oct., 1967], No. 47709/67. Heading B7G. [Also in Division F2] Helicopter landing gear, which may be contracted on landing to lower the helicopter centre of gravity by selection of negative blade pitch and locked in a contracted position, comprises an hydraulic cylinder 11 and piston 12 carrying wheel 13, and an hydraulic flow control valve 21 operated by a solenoid 38 in response to settings of pitch selection mechanism 43. On landing with positive pitch, hydraulic oil flows from chamber 18 to chamber 16 through damping valve 20, chamber 16 being allowed to expand by piston 14 and air chamber 15. Oil also flows from chamber 18 to annular chamber 19 by way of control valve 21, passing through chamber 22, by-pass 36, chamber 34, valve 32, 37 which solenoid 38 has opened, spring chamber 33, orifice 35 and duct 26. On take-off the flow is reversed. With negative pitch selected, however, spring 41 closes valve 32, 37 since the solenoid 38 is inoperative, so that flow from chamber 22 to chamber 19 is through valve 27 formed by spring-loaded piston 31 and valve seat 25 into chamber 24 and along duct 26. No reverse flow through the control valve is possible, because orifice 35 equalizes the pressures in chambers 24 and 33, so that spring 30 closes the valve 27; hence the landing gear remains contracted until positive pitch is selected and reverse flow through valve 32, 37 is possible. A valve 44 may be closed to maintain the contracted position over a length of time.
Patent GB-1479623-A (GB)
Title: Mattress
IPC: A47C27/12
Filed: 1975-10-17
Abstract: 1479623 Mattresses BOWATER TECHNICAL SERVICES Ltd 17 Oct 1975 [5 Nov 1974] 47779/74 Heading A4M [Also in Division D1] An interior spring mattress has a basic filling comprising a resilient mat of strands of wood wool in which the strands are bonded with an adhesive and wherein at least 90 wt per cent. of the strands have a minimum length of 150mm. The mattress optionally includes a layer of scrim between the filling and the springs. Portions of the strands may be oriented vertically. The adhesive may comprise 10-20 wt per cent. of the dry weight of the wood wool. The mat may be 25mm. thick and weigh 1À5 kg/m<SP>2</SP>.
Patent GB-1453960-A (GB)
Title: Self-controlled air distribution system
IPC: F24F11/04
Filed: 1973-10-16
Abstract: 1453960 Air distribution units DYNAMICS CORP OF AMERICA 16 Oct 1973 [15 Nov 1972] 48085/73 Heading F4V [Also in Division G3] A system for supplying conditioned air through a duct 12 to a zone 18 comprises a valve 22 having an actuator 26 powered by air from duct 12 and controlled by fluid signal comparison and amplifying means connected to the duct and supplied with at least two fluid signals indicative of at least duct or zone temperature and duct pressure. In the arrangement shown duct 12 and zone 18, e.g. a room, communicate via a box 14 having a diffusing outlet 16 at which is disposed a thermostat 60. A pitot tube 28 disposed within duct 12 taps air through line 30 and filter 32 to a pressure regulator 38, the output of which acts via lines 40, 42 as the power input P s  to the first stage 44 of a multistage fluid amplifier 44 to 54. Power inputs P s  are also supplied through line 36 and branches 102 to 110 to stages 46 to 54. The regulator output is additionally connected via line 56 to a variable restriction 58 which can be set to provide a pressure or volume flow set-point signal. The latter is modified by thermostat 60 comprising a bimetallic coil 72 with an end portion 74 operable to interrupt jet 76 and thus vary the downstream pressure supplied via line 56 as control signal input C1 to amplifier stage 44. A second control signal input C2 is provided via line 78 and filter 80 from a pressure tapping 82 in box 14. Tapping 82 may be replaced by differential pressure tappings 84, 86 on opposite sides of an orifice 90. Variation in temperature or pressure from the desired values causes a change in output signal 02 in line 112 of final stage amplifier 54 with consequent adjustment of diaphragm 122. The latter varies the leakoff through orifice 120 of Venturi 124 and since the Venturi throat 126 is connected via line 128 to valve actuator 26, the valve 22 is repositioned to restore the desired values. Actuator 26 is an inclined bellows whereas valve 22 is a flap pivoted at 24. Thermostat 60 may be overridden by a warm-up switch 79, 92 comprising a bimetallic coil controlling a diaphragm valve which by-passes the net point signal established at 58 directly to signal input C1. To enable thermostat 60 to respond more rapidly to temperature changes in zone 18, an aspirator 64 powered by air from pitot tube 68 draws air from zone 18, over thermostat 60, and through line 62.
Patent GB-1028515-A (GB)
Title: Improvements in bearing assemblies of contra-rotating electric motors
IPC: H02K16/02
Filed: 1962-12-20
Abstract: 1,028,515. Electric motors. GENERAL ELECTRIC CO. Dec. 20, 1962 [Dec. 27, 1961]. No. 48106/62. Heading H2A. In a motor, not shown, having a stationary field structure and oppositely rotatable armatures driving concentric output shafts 20, 22, a bearing assembly comprises two guide bearings 124, 126 respectively having surfaces 130, 149 contacting journals, e.g. 131, on each of the shafts and the inner 126 of which bearings is supported by the outer shaft 22 and located on the space between the shafts, two radially outwardly extending thrust collars 145 on the outer shaft 22 and disposed axially on opposite sides of the bearing 124 to contact thrust-receiving bearings 138, and means extending through the guide bearings to enable lubricant to be supplied to their surface. The surfaces of the guide bearings and of the shoes 144 of the thrust bearings are babbitted, the shoes being loaded by springs 142. The means comprise passageways and hollow bolts 151 by which the bearing 126 is secured to the outer shaft, and deflectors 155 on the inner shaft 20 throw leaking oil through openings 156 to the thrust bearing whence it falls by gravity to a sump in the bottom of the pedestal 19. Seals 147, 157 are provided to confine the oil. Oil is also drained from the top of the pedestal through a bubbler sight gauge not shown.
Patent GB-1508060-A (GB)
Title: Trunking
IPC: F16L9/00
Filed: 1975-11-22
Abstract: 1508060 Trunking COLT INTERNATIONAL Ltd 12 Nov 1976 [22 Nov 1975] 48114/75 Heading F2P Trunking is composed of adjacent trunking sections interconnected by a completely encircling strap 11 fixed to adjacent ends of each pair of adjacent trunking sections, each section comprising four, separate, generally flat side wall elements 10 having interlocking formations 12, 13 at their longitudinal side edges, releasably attaching the side wall elements together edge to edge, each element 10 having a strap portion 11 along one of its transverse side edges, the strap portions having interlocking formations 20, 21 at their two ends respectively, each releasably interlocking with a strap portion end formation at the adjacent end of the strap portion of the adjacent side wall element when the side wall elements are assembled. Preferably the interlocking formations 12, 13 and 20, 21 are interlocked by relative movement of adjacent side wall elements 10 in the longitudinal direction of the ducting as seen in Fig. 1. Adjacent trunking sections are joined together through the medium of encircling straps 11 in conventional fashion, e.g. by riveting.
Patent GB-1161855-A (GB)
Title: Gymnastic Apparatus.
Inventor: MARTYNE-SMITH JOHN
IPC: A63B1/00
Filed: 1967-10-25
Abstract: 1,161,855. Exercising apparatus. TUBE PLASTICS Ltd. 29 July, 1968 [25 Oct., 1967], No. 48444/67. Heading A6M. Gymnastic apparatus comprises a pair of elongated members 10 and 11, each of channel shaped configuration 'so as to have a pair of side portions 1O and 1Ob 11a and lib and a side connecting portion, 10c and 11c. The side portions 1Oa b of one member at or adjacent to the free ends thereof are pivotally attached to the side portions 11 a, to of the other member at positions thereon adjacent to the connecting portion 11c. Side portions 10a, b are connected to side portions 11 a, b at the end remote from the pivot by a tie means 14 which may be adjustable in length, said tie means serving to limit relative angular displacement between members. The tie means may be a chain, telescopic tube or, as illustrated, a tube on which are a number of spaced holes.