baber/WOPTO huggingface dataset:
Patent GB-684578-A (GB)
Title: Improvements in or relating to variable-speed power transmission
Filed: 1948-02-11
Abstract: 684,578. Change-speed gear. CHRYSLER CORPORATION. Feb. 11, 1948 [Aug. 5, 1941], No. 30434./50. Divided out of 684,553. Drawings to Specification. Class 80 (ii); The subject-matter is the same as that of Specification 684,553, but the claims are directed towards the switch 257 (see Fig. 26 of Specification 684,553), which, by being maintained closed by the pressure of the countershaft-driven servo oil-pump, and also being in parallel with the shift-circuit-completing engine ignition switch, maintains the electrical circuit energised during all movement of the vehicle whilst in gear. Thus even if the driver switches off the ignition prior to stopping whilst the vehicle is decelerating, electricity is still, available for the governor switch either to maintain or to effect a downshift to the usual starting ratio before the vehicle finally stops, thus avoiding the transmission being undesirably upshifted or immovably locked in high, due e.g. to the one-way clutch action in roll-back on an incline.
Patent GB-1000880-A (GB)
Title: Improvements in die blocks
Inventor: MURRAY JOSEPH DENNIS
IPC: C22C38/22
Filed: 1963-07-31
Abstract: A die block is made of a steel containing (in addition to Fe, incidental elements and impurities) C 0.25-0.8%, Si up to 1%, Mo at least 0.3%, Mn at least 0.25%, B not more ahan 0.005% (at least 0.0012% soluble) and Cr in an amount such that Mn+Cr+ 4/5 Mo+2C is between 2.5% and 3.5%.  After normalizing, the block may be tempered at 600 DEG C. or 650 DEG C.
Patent GB-1409449-A (GB)
Title: Ball bearing assemblies
IPC: F16C29/00
Filed: 1973-06-27
Abstract: 1409449 Bearings ROCKWELL INTERNATIONAL CORP 27 June 1973 [31 Aug 1972] 30481/73 Heading F2A A ball bearing assembly comprises an outer sleeve 14 and an inner sleeve 16 concentrically fitting therewithin, the inner sleeve having a number of tracks 18 defining ball recirculation paths and provided with a number of plasticscontaining balls 20. The plastics may be nylon, acetal, PTFE-fibre filled acetal, polycarbonate, phenolics, or fabric-filled phenolics. Each ball may have a core of aluminium, steel, or hardened plastics, such as densified nylon, acetal, or phenolics. Metallic cores may be roughened to improve bonding with the outer plastics layer. The strength of plastics cores may be increased with metallic chips. The outer sleeve 14 is of SAE 5200 steel, and the inner sleeve 16 is of zinc alloys, or plastics. The bearing surfaces may be coated with PTFE. The outer sleeve 14 may be made by broaching.
Patent GB-628832-A (GB)
Title: Selenium rectifiers and photocells
IPC: H01L21/105
Filed: 1946-10-14
Abstract: 628,832. Dry contact rectifiers. STANDARD TELEPHONES & CABLES, Ltd. Oct. 14, 1946, No. 30528. Convention date, June 2, 1944. [Class 37] [Also in Group XL (b)] The method of treating a crystalline selenium surface to provide an improved blocking layer, subsequently produced thereon by electroformation, comprises the step of subjecting the said selenium surface to electrolytic action as a cathode in an acid water bath under non- polarizing conditions, i.e. conditions under which the resistance of the selenium element does not increase during the electrolytic treatment. The acid water bath may comprise a solution of selenium dioxide or selenium hydride, selenious, selenic, hydrochloric, sulphuric or phosphoric acid and the pH value should be between 1 and 4. The anode may be of carbon, or, in some cases, of platinum, and the base-plate carrying the selenium layer may have its back painted with an insulating layer or be mounted in a holder arranged to block off the rear surface of the plate from the solution. The current density-may be about 1 ampere per square foot of the selenium surface being treated. The selenium surface is washed with water and a quick-drying liquid, such as alcohol or acetone, prior to the application of the counter-electrode and of the electro-forming process. Specification 565,321 is referred to.
Patent GB-337556-A (GB)
Title: Improvements in the arrangement of telephone apparatus
IPC: H04M9/00
Filed: 1929-10-08
Abstract: 337,556. Telefonaktiebolaget L. M. Ericsson. Oct. 12, 1928, [Convention date]. Desk and table sets; supporting; intercommunication apparatus.-In telephone apparatus comprising a mechanically united loud-speaker and highly sensitive microphone for use in direct call intercommunication systems, the loud-speaker is of the hornless large diaphragm type. The diaphragm is preferably supported at its centre only, its circumference either being free or bearing against an elastic or soft material whilst the magnet system is preferably elastically connected to the frame so that its vibrations are not trans. mitted to the frame to any noticealble degree. Such an arrangement reduces the disturbance due to the normal back coupling effect between the loud-speaker and highly sensitive microphone so that the latter will not react on receivers of other telephone apparatus to which it may be connected. The apparatus shown comprises a lower portion 1 having a rigid metal frame on which are mounted switches 2 and highly sensitive microphones 3, 4 and an upper portion 5, preferably of wood, which contains the conical diaphragm loud-speaker 6. An ordinary receiver 7 is mounted on a hook 8 which is combined with a switch by means of which the loud-speaker is automatically disconnected upon removal of the receiver 7 from its hook.
Patent GB-439073-A (GB)
Title: Improvements in stopper or closure devices for bottles and like vessels
IPC: B65D45/06
Filed: 1934-10-25
Abstract: 439,073. Stoppers for bottles. FEAU, L., 11, Place du Parc, Sevres, Seine-et-Oise, France. Oct. 25, 1934, No. 30604. [Class 125 (iii)] A stopper of the type comprising a valve mem ber which opens when the pressure in the bottle &c exceeds or falls below a predetermined amount, and in which the valve is accommodated between two component parts. According to the invention, the body portion 21 of the stopper is formed with a cavity on the underside into which a member 22 is fixed, containing a spring- pressed valve element 23. The spring 24 may comprise a resilient sheet metal stamping or usual spiral. The valve member may comprise a plug which is polygonal in section so that one or more orifices in the main portion are always left open. The valve member may be an elastic diaphragm extending across the inserted member, and the body portion may be of dished sheet metal &c.
Patent GB-1277899-A (GB)
Title: Improvements in or relating to rods for making spot-welded reinforcing mats for use in reinforced concrete
IPC: B21F27/00
Filed: 1969-06-18
Abstract: 1277899 Concrete-reinforcing rods BAU STAHLGEWEBE GmbH 18 June 1969 [25 June 1968] 30759/69 Heading E1K [Also in Division D1] A ribbed rod for constructing a concretereinforcing mat of interconnected rods is coldworked, has a low carbon content and a specific rib surface area of approximately 0.04 to 0.065.
Patent GB-438752-A (GB)
Title: Improvements in piston rings
IPC: F16J9/20
Filed: 1934-10-26
Abstract: 438,752. Piston-rings. ZAHODIAKIN, V. F., 90, Morningside Drive, New York, U.S.A. Oct. 26, 1934, No. 30774. Convention date, Oct. 30, 1933. [Class 122 (i)] A ring is formed from a strip of resilient sheet metal corrugated and compressed to the form shown in Fig. 5, the corrugations forming oil passages through the ring. The upper and lower faces of the ring may be indented at 28, 29. The ring may be split or not.
Patent GB-1277318-A (GB)
Title: Medical splint apparatus
Inventor: ARTEMENKO ANATOLY IVANOVICH
IPC: A61F5/058
Filed: 1970-06-25
Abstract: 1277318 Medical splint VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT GORNOSPASATELNOGO DELA 25 June 1970 30831/70 Heading A5R Orthopaedic apparatus comprises an inflatable splint 1 that may be fastened to a patients limb and inflated by a working fluid, the splint being connected by conduits 2, 3 to a heat exchanger 4 comprising two communicating vessels 9, 10, one disposed within the other, each vessel being provided with a fluid pressure control valve 16, 17, said external vessel 9 being filled with working fluid 13 and the internal vessel 10 being filled with a cooling agent 15. In the embodiment shown in Fig. 1, solid carbon dioxide 15 sublimes, cooling the water 13 and the vapour passes into vessel 9 via orifice 12 forcing the water into the splint. The splint, which is formed of rubber impregnated fabric, comprises a series of tortuous internal passages 22. The internal wall (24) of the splint is made of a set of porous plastics insulating panels that may be removed or fixed to the splint in order to localise the cooling effects of the liquid. In an alternative embodiment of the invention, the water may be directed round the system by a pneumatic pump 25, operated by the pressure of vapour in conduit 27, (Fig. 4, not shown). Diaphragm (31) is forced from an upper to a lower position whereby the working fluid delivered from the splint 1 is forced from the chamber (41) into the external vessel 9 through valve (30) and the T-piece 26. Rod (32) follows the motion of the diaphragm (31), whereby the return spring (33) is compressed and the arm (35) turns from the upper position to the lower one. The cut-off spring (37) abruptly throws over the arm (36) from the upper position. As a result, the inlet valve (38) closes and the outlet valve (39) opens. The gas that has been fed into the chamber (34) is let out into the atmosphere. When the pressure inside the chamber (34) drops to atmospheric and the diaphragm (31) through the action of the return spring (33) rests on its extreme upper position, the arm (35) turns from the lower position to the upper one. Simultaneously, the working fluid is sucked to the chamber (41) from the splint 1.
Patent GB-632469-A (GB)
Title: Improvements in or relating to systems comprising vibratory inverters
IPC: H02M7/62
Filed: 1947-11-24
Abstract: 632,469. Converting. ERICSSON TELEPHONES, Ltd., and MITCHELL, J. H. Nov. 24, 1947, No. 31040. [Class 38 (ii)] An arrangement for obtaining an alternating current comprises a direct current source feeding the primary circuit 1 of a transformer TR through interrupter contacts wherein the circuit is periodically varied to produce an alternating current in a load circuit R connected to the secondary winding 2 of the transformer, the load circuit including at least one winding 4 of each of one or more saturable reactors LC, each of which has a magnetic circuit separate from that of the transformer and which is alternately saturated and desaturated to limit the current at the contacts during the make- and-break thereof. At the same time the alternately poled direct current pulses are fed to a series resonant circuit consisting of an auxiliary winding 3 on the saturable reactors and a capacitor C, the natural frequency of the circuit being such that a half cycle of oscillation is approximately of the same duration as a current pulse from the direct current source, thus ensuring that the reactor is desaturated and therefore that the contacts are carrying minimum current during the make-and-break thereof, so reducing wear. Fig. 2 (not shown) illustrates an embodiment wherein the resonant circuit is connected across the secondary winding of the transformer and Fig. 3 (not shown) has a delay circuit in series with the winding 3 so that the current pulse therein is retarded and serves to de-saturate the core for a current pulse subsequent to that from which it was derived. The Provisional Specification describes an embodiment in which the resonant circuit feeds a full wave rectifier which in turn feeds the saturating winding of the reactor; also saturable reactors may be included to control the power output of the converter.
Patent GB-1451795-A (GB)
Title: Flame ionisation detector
IPC: G01N27/62
Filed: 1973-06-29
Abstract: 1451795 Ionization detectors PYE Ltd 8 April 1974 [29 June 1973] 31067/73 Heading H1D A flame ionization detector includes a hollow cylindrical body 1, a ceramic burner 6 mounted at one end of the cylindrical body and having a metallized portion 14 serving as one electrode of the detector, and a tubular electrode 12 mounted within the cylindrical body substantially coaxial with the burner. A second metallized portion 15 on the burner 6 serves to seal the burner to a plate 2 of nickel steel having bores 7 and 8 communicating with a bore 9 in the burner and receiving connections 10 and 11 from a gas chromatograph column and a hydrogen feed line. The electrode 12 is supported in a metallized bore 13 in an annular ceramic disc 13. An air-line 4 is received in a bore 5 in the wall of the body 1. All the metallized portions may be a platinum-based alloy. The construction maintains effective insulation of the electrodes 12 and 14 at temperatures which would normally necessitate increasing the size of the detector.
Patent GB-176317-A (GB)
Title: Apparatus for overcoming the effects produced upon telegraph and telephone lines by the vicinity of single-phase currents
IPC: H04L25/08
Filed: 1921-11-21
Abstract: 176,317. Carles, F. March 4, 1921, [Convention date]. Induction, preventing and minimizing. - Apparatus for minimizing the inductive effects produced in a telegraph or like line by neighbouring conductors comprises three solenoid windings a, b, c surrounding an adjustable common core d, one winding a having one terminal connected to earth whilst all the remaining terminals of the three windings are free. One such apparatus is connected at each end of the line e in shunt with the transmitter or receiver f; and to increase the efficiency, two such apparatus may be used in shunt with one another. The resistance of the third winding c is less than that of the other two windings a, b.
Patent GB-1483428-A (GB)
Title: Copying and telecopying device
IPC: G03B27/50
Filed: 1975-07-25
Abstract: 1483428 Combined printing and telecommunication apparatus COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 25 July 1975 [9 Aug 1974] 31167/75 Heading G2A [Also in Division H4] Combined direct copying and telecommunication apparatus comprises means for directly copying a document, scanning it for printing elsewhere, and printing a document scanned elsewhere. The direct copying system comprises a lamp 12 for illuminating document 6 on transparent carriage 5, mirrors 13 and 15 for directing light reflected from the document through slit 11 and focused by lens 14, and a photo-conductive drum 1. The document carriage may be moved across slit 11 using belts 7 wound on pulleys 8 and driven by a motor (not shown) which disengages at the end of a run so that spring 10 returns the carriage to its initial position. Alternatively the slit may be moved across the document, the optical path length between lens and document being kept constant by using three mirrors, one of which moves at the same speed as the slit and the other two of which move at half the speed of the slit.
Patent GB-629776-A (GB)
Title: Improvements in and relating to overspeed brakes for hydraulic turbine runners
IPC: F03B15/18
Filed: 1947-11-25
Abstract: 629,776. Hydraulic turbines. ENGLISH ELECTRIC CO., Ltd., and DERIAZ, P. Nov. 25, 1947, No. 31180. [Class 110(iii)] Emergency braking blades 1 on a hydraulic turbine runner are held within the runner periphery by segmental plates 3. The plates are interlocked at one end 3a and at the other end are held by trip-levers F which rotate clockwise when the runner speed is sufficient to cause the centrifugal force acting on the lever to overcome a spring S. Movement of a trip-lever frees the associated plate 3 and allows it to swing out of the way of the blade 1 which thereupon moves into operative position under centrifugal force. The movement of each plate 3 is limited by a ring 8 and pin 4. Frangible fastenings may be used in place of the trip-levers.
Patent GB-1462869-A (GB)
Title: Treatment of building boards
IPC: C04B41/47
Filed: 1973-07-02
Abstract: 1462869 Bitumen-coated building boards BPB INDUSTRIES Ltd 25 June 1974 [2 July 1973] 31469/73 Addition to 1410910 Heading B2E Building boards which are not as open textured or as porous as woodwool slab but have a certain degree of porosity and a capability to absorb water are rendered showerproof by direct application of unmodified bitumen, or bitumen modified with plasticiser or flux oil, in non-preformed layer form. The building board may be chipboard, flaxboard, blockboard, fibreboard, plywood, compressed strawboard or "polyurethane board" (i.e. rigid polyurethane foam between liner of paper and/or plastics). The bitumen used does not contain additives such as emulsifving agents or elastomer but may contain fillers such as sand, perlite. vermiculite, limestone, slate flour, pulverised fuel ash, talc, mica, glass-, asbestos- or jute-fibre, waste paper, or plastics, sawdust, around woodwool slab, or comminuted felts, fibres and textiles. The bitumen may be spread by trowel, doctor blade or roller or may be extruded or curtain-coated and subsequently rolled.
Patent GB-799255-A (GB)
Title: Improvements in or relating to burettes
IPC: B01L3/02
Filed: 1956-10-16
Abstract: <PICT:0799255/III/1> A burette which operates by means of diminished atmospheric pressure is characterized in that the rubber bulb which produces the diminution of pressure is adapted in connection with the suction duct so that the required quantity of titration liquid can be delivered from the burette by means of single compressions of the operator's hand.  The measuring tube of the burette 1 is connected at its upper portion 4 to the suction duct 6 and to the discharge tube 3.  The supply duct 5 leads into the widened upper portion 4 of measuring tube 1.  The other end of the supply duct 5 dips into the container in which the titration liquid is situated.  Connected to the suction duct 6 is a branch 8 which is connected to the flexible rubber pipe and rubber bulb 9.  In a modification (not shown) the burette may be constructed so that the operation may be performed in an inert atmosphere by means of a connection to a protective gas supply.
Patent GB-1261377-A (GB)
Title: Device for supplying animals with water or other liquids
Inventor: RESTALL GEORGE
IPC: A01K7/06
Filed: 1968-07-02
Abstract: 1,261,377. Animal drinking device. G. RESTALL. 18 June, 1969 [2 July, 1968], No. 311529/ 68. Addition to 1,154,496. Heading A1M. [Also in Division F2] A modification of the animal drinking device described in the parent Specification comprises of a provision to prevent the animal accidentally actuating the valve when it is not in the animals mouth. A guard member 42 is provided, so that the animal can only actuate the device by gripping the guard member 42 and valve support member 51 in its mouth, (see Fig. 2). In other embodiments the valve support member is short and has an extension member attached to it, or the valve support member is solid and a groove in the guard member directs the liquid into the animals mouth.
Patent GB-1269406-A (GB)
Title: Resistor
IPC: F24C7/06
Filed: 1969-01-23
Abstract: 1269406 Semi-conductor resistors MINNESOTA MINING & MFG CO 23 June 1969 [24 June 1968] 31659/69 Headings F4W and W45D [Also in Division H5] A ceramic semi-conductor resistance element consists principally of zinc oxide with property modifying additives making up 0À002 to 30% of the element, including 0-30% zirconia, 0-8% silica and 0-0À03% of the oxide of at least one of the trivalent metals aluminium, gallium, indium and iron, the resistivity of the element being less than 10 ohm-cm at 25C and less than 1 ohm-cm at 925C., the resistivity remaining constant during prolonged heating at a given temperature. The element is made by sintering to form an elongate tube, which may be mounted in an elongate channel-shaped casing serving as an elongate reflector so as to form a space heater. Various examples of compositions and sintering methods are described.
Patent GB-159681-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K23/26
Filed: 1919-12-17
Abstract: 159,681. British Thomson - Houston Co., Ltd., and Whitaker, F. P. Dec, 17, 1919. Windings. - In a winding of which the numbers of commutator bars, winding slots and whole coils are equal, each coil is divided into two parts 1, 1, 2, 2, Fig. 1, (Provisional), these half coils respectively having winding pitches less than and greater than the pole pitch and being connected in parallel between the pair of commutator segments 4. The mean pitch of the two parts is equal to the full winding pitch, whereby the tendency for currents to circulate between the two parts is avoided. The method is applicable to duplex or multiplex windings of lap or drum type as well as to single windings as shown in the Figure. A method for connecting the windings at the rear end is illustrated in end and plan views respectively in Figs. 1 (Complete) and 3. 1, 1 and 2, 2 are the top and bottom conductors, and oblique clips 3 connect the conductors of the half coil which is under normal pitch, while clips 4 connect them in those half coils which have more than normal pitch. In an alternative method, the upper and lower conductors in the long-pitch half coils are directly connected by the conductor substance itself without the use of clips. The method of winding may be used in conjunction with the arrangement of brushes described in Specification 164,779.
Patent GB-662755-A (GB)
Title: Improvements in or relating to vapour electric arc converters
IPC: H01J13/16
Filed: 1948-12-08
Abstract: 662,755. Metal vapour converters. GENERAL ELECTRIC CO., Ltd., and GALLIZIA, E. Nov. 29, 1949 [Dec. 8, 1948], No. 31787/48. Class 39 (i). The arc paths of a number of electrodes in a side arm assembly pass through a single hole in the wall of a metal-clad converter, and are segregated along their lengths at least in the vicinity of the electrodes. In one form, a 12-phase converter has a steel tank 1 provided with six anode steel arms 6 to each of which is welded separate anode arms 7, 8. The arc paths to a pair of anodes may be separated by a steel or graphite partition in the arms 5 which are inclined to drain mercury back to the cathode. A jacket 2 guides air from a fan below the cathode over the converter walls.
Patent GB-226964-A (GB)
Title: Improvements relating to ball-castors and other anti-friction runner fittings
IPC: B60B33/08
Filed: 1923-12-19
Abstract: 226,964. James, J. H. Dec. 19, 1923. Ball bearings. - A ball castor comprises a casing containing a ball projecting therethrough at one end and bearing against a smaller ball or balls at the inner end of the casing. The pintle or other member 6 projects through an opening in the inner end of the casing I and is opened out at its lower reduced end 5 to attach it to the casing and simultaneously to provide a seating for the smaller ball 12 on which the main ball 13 bears. A shoulder 7 on the pintle bears on a circular plate 3 with screw holes 8. The sloping sides of the lower opened end of the pintle bear against a V-sectioned washer or member 9 which may be formed with an annular ball race for a number of balls instead of the single ball 12. In a modification, a screwthreaded pintle 6 with recess in the head 14 for a ball 12 has the portion 5 of the shank of squaresection passing through square holes in the casing and plate 3, the edges of which are turned up to permit of its rotation by a spanner.