baber/WOPTO huggingface dataset:
Patent GB-1096613-A (GB)
Title: Improvements in and relating to an earth leakage control circuit for a three phase electrical supply line
Inventor: SPENCE FRANCIS DAVIDSON
IPC: H02H3/347
Filed: 1964-04-10
Abstract: 1,096,613. Transistor switching circuits. M & C SWITCHGEAR Ltd. April 12, 1965 [April 10, 1964], No. 15021/64. Heading H3T. [Also in Division H2] An earth leakage protective arrangement comprises a main contactor 11, an oscillator 17, a relay 34 connected to the oscillator and effective to cause opening of the contactor 11, and a transformer 10 having a secondary winding 30A connected to the oscillator and effective to modulate the oscillator output signal to cause the relay to release in the event of earth leakage. The transformer 10 may be a core-balance transformer, Fig. 1 (not shown), or have a primary winding 54 connected between the star-point of an inductor 47 and earth. When earth leakage occurs, relay 34 releases to open contacts 49 in series with the operating coil 51 of the contactor 11, and to close contacts 39 in series with the operating coil 41 of a latching relay which opens " lock-out " contacts 50. When the contactor 11 opens, it closes auxiliary contacts 48 so that current can flow in the lock out circuit comprising the inductor 47, the fault path, earth, a secondary winding 36 of an auxiliary transformer and a coil 43 of the transformer 10. This current produces a flux in the transformer core so as to induce current in the secondary winding 30A to prevent any reclosure of the contactor 11 whilst an earth fault persists. When the fault has been removed, the lock-out relay 41, 50 is reset by the energization of a reset coil 40 on the operation of push-button switch 38. The arrangement may be rendered fail-safe by a silicon-controlled rectifier 18A in series with the supply to the oscillator 17, the rectifier being triggered by the potential across a resistor 61 when a small current circulates from a secondary winding 63 and rectifier 62 through resistors 61, 60 and coil 54. A manual test switch 21A with resistors 22A is provided.
Patent GB-1381548-A (GB)
Title: Silver diffusion transfer process
IPC: G03C8/06
Filed: 1972-03-30
Abstract: 1381548 Photographic transfer process POLAROID CORP 30 March 1972 [1 April 1971] 15050/72 Heading G2C A photographic silver salt diffusion transfer process comprises developing an exposed silver halide emulsion in which at least 95% of the silver halide grains have a diameter of at least 0À5Á with an aqueous processing solution including a hydroxylamine developing agent and a silver halide solvent and transferring at least a portion of the imagewise distribution of silver complex formed to a superposed stratum of regenerated cellulose containing a silver precipitating agent. Preferably the developing agent is of formula:- (R<SP>1</SP>) (R<SP>2</SP>)NOH (in which R<SP>1</SP> is alkyl, alkoxyalkyl or alkoxyalkoxyalkyl; R<SP>2</SP> is H, alkyl, alkoxyalkyl, alkoxyalkoxyalkyl or alkenyl), and the receiving stratum is formed by the partial depthwise hydrolysis of a cellulose ester containing the precipitating agent and a  mercapto compound. In the Examples, the receiving element is formed by coating baryta paper with 2 layers of cellulose diacetate containing 1,6-bis(5-mercapto-1,3,4-thiadiazolyl-2- thio)-hexane, the outer layer also containing NiS, and then hydrolyzing the outer layer; the aqueous processing solution contains KOH, TiO 2 , ZnO, hydroxyethyl cellulose, triethanolamine, 2,4-dimercaptopyrimidine, uracil and either tetrahydropyrimidine-thio or imidazolidine-thione. The invention also relates to a film unit for effecting the above process.
Patent GB-128085-A (GB)
Title: Improvements in Machine Guns.
Inventor: REISING EUGENE GUSTAVUS
IPC: F41A15/14
Filed: 1918-09-17
Abstract: 128,085. Reising, E. G. Sept. 17. 1918. Machine guns.-Relates to gasoperated guns, and consists of a special construction and arrangement of the looking and firing mechanisms and in a scavenging device whereby air is injected into the barrel after each discharge. In the construction shown, the breech-block 41 is locked and operated by a lever 38 pivoted to the breech frame and actuated by a sliding bar 36 connected to the piston-rod 26. The top end of the lever is forked and in the locking- position, shown in Fig. 2, bears against bevelled shoulders 47 on the breech-block. When the lever is turned rearwards, it first releases the shoulders 47 and then enters recesses 46 at the side of the breech-block, and by engagement with the rear edges of these recesses carries the breech-block back. A secondary locking-device comprises a bolt 60, Fig. 2, adapted to be moved upwards into engagement with a recess in the breech-frame by pins 61 passing downwards through the breech-block and projecting from the shoulders 47, so that when the lever 38 reaches the locking position they are pressed upwards. A spring plunger 63 on the recess in the breech frame tends to depress the bolt 60. During the rearward movement of the piston, the guidetube 34 of the re-action spring 35 telescopes into a tube 33 and forces air through a duct into the chamber of the barrel to dispel the gases. The action bar is held in its rear position after each discharge by the trigger 40, and the firing-pin 53, which is cocked by the lever 38, is held by a sear 96 which engages a recess in the secondary locking-bolt 60 so that it releases the firing-pin when the breech-block is fully locked. Belt-feed mechanism described in Specification 129,949 is employed.
Patent GB-438722-A (GB)
Title: Improvements in or relating to machines for effecting relative movements between shoes and lasts
IPC: A43D3/10
Filed: 1934-05-22
Abstract: 438,722. Boot making machines. BRITISH UNITED SHOE MACHINERY CO., Ltd.,Belgrave Road, Leicester.-(Assignees of Perkins, G. A. ; Lynn, Essex, Massachusetts, U.S.A.) May 22, 1934, No. 15173. Convention date, June 24, 1933. Addition to 354,205. [Class 17 (i)] Removing shoes from lasts.-Relates to the type of machine described in the parent Specification and consists in using an inflated member for removing the shoe. An ordinary wheel of automobile type is rotated by belt from a shaft 24 and carries an ordinary pneumatic tyre 30. Adjacent to this is a last support 40 on a lever pivoted at 34 and having an arm 42 linked to a treadle 44 for bringing the shoe into contact with the tyre for shoe removal. The link 50 between the treadle and the lever is adjustable, and is connected with the lever by a universal joint.
Patent GB-1513353-A (GB)
Title: Electronic timepiece incorporating a complex passive capacitance-resistance circuit element
IPC: H01G4/40
Filed: 1976-04-14
Abstract: 1513353 Electronic timepieces DAINI SEIKOSHA KK 14 April 1976 [17 April 1975] 15282/76 Heading G3T [Also in Division H1] A complex passive electronic circuit, Figs. 1 and 2, in an electronic timepiece comprises a variable capacitor 1 having disc shaped rotor 2 and stator 3 of TiO 2  ceramic, with semicircular vacuum evaporated electrodes thereon and a shaft 4 adjusting the rotor and passing through a plate connected to terminal 6, a terminal 5 being connected to the stator electrode and a thick film or thin film resistor 7 printed, photo-etched, or masked on the reverse of stator 3 with its ends connected to terminals 5, 6. Alternatively the capacitor and resistor may be series connected. In modifications two resistors may be formed orthogonally on the reverse of the stator and separated by an insulant layer, Fig. 3 (not shown), or an arcuate resistor may be variable and contacted by a rotatable electrode, Fig. 4 (not shown), or a laminated capacitor having plural alternate electrode and ceramic layers sintered together may have a resistor formed on its underside in parallel therewith, Figs. 5 and 6 (not shown). The resistor may be variable.
Patent GB-476171-A (GB)
Title: Improvements relating to tubular walls for heating or cooling apparatus
IPC: F28D1/06
Filed: 1936-06-02
Abstract: 476,171. Casting composite articles. SAMESREUTHER & CO., GES. June 2, 1936, No. 15390. Convention date, May 31, 1935. [Class 83 (i)] [Also in Group XIII] In apparatus for heating or cooling liquids in a vessel surrounded by tubes d containing the heating or cooling medium, profile metal rods c are welded between the tubes, and the space between the walls of the vessel and the tubes and rods is filled, for heat conduction, with a metal or metal alloy of low melting point which is solid at the normal working temperature, but which melts, when heated above this temperature to produce a solid metallic union between the tubes and their support.
Patent GB-612254-A (GB)
Title: Improvements in and relating to centrifugal machines
IPC: B04B3/04
Filed: 1946-05-21
Abstract: 612,254. Centrifugal separators. NAAMLOOZE VENNOOTSCHAP MACHINEFABRIEK REINEVELD. May 21,1946, No. 15425. Convention date, Nov. 16, 1944. [Class 23] A separator drum 1 is carried by a tubular driving shaft 5 and a scraper drum 2 is mounted by a bearing 3 on a fixed shaft 4. The flange 7 of the shaft 5 has a toothed annulus 9 and the drum 2, a toothed annulus 13. Pinions 11, 12 are mounted on an eccentric bush 10 fixed on the shaft 4. The drum 2 makes a liquid-tight running contact with the flange 7 at 14 so that lubricating oil can be supplied to the cavity of the drum 2.
Patent GB-1304941-A (GB)
IPC: G02B21/22
Filed: 1970-04-01
Abstract: 1304941 Stereoscopic microscope JUNGNER INSTRUMENT AB 1 April 1970 [2 April 1969] 15463/70 Heading G2J  A stereoscopic microscope comprises two upwardly directed Zoom systems each comprising lenses 1-3, a prism 6 being disposed in the beam emerging from each system to reflect the beam through 180 degrees towards a mirror system adapted to reflect the beam towards an eye-piece 9. The microscope has a single objective lens  4 and the mirror system comprises a mirror 7 for each beam and a common mirror 8, which may be horizontal or vertical; if horizontal, the prism 6, mirror 7 and eye-piece 9 for each beam may be mounted on a frame rotatable about the axis of the particular Zoom system to adjust the interocular distance. The Zoom system axes may be angularly disposed.
Patent GB-851511-A (GB)
Title: Improvements in or relating to bimetallic elements
IPC: G01K5/64
Filed: 1958-05-14
Abstract: A coating of silver is formed on a layer of glass (see Group XXIII) or of vitreous enamel (which may contain copper) disposed on a bimetal (see Group XIII).  5-60% by weight of silver oxide is added to the glass or enamel and exposure to visible light, ultra violet light or X-rays, in the presence of steam, causes silver to be deposited on the surface.  German Specification 1,000,575 is referred to.  Reference has been directed by the Comptroller to Specification 792,145.
Patent GB-1455595-A (GB)
Title: Preparation of 2,5-disubstituted benzamides
IPC: C07C315/04
Filed: 1974-04-09
Abstract: 1455595 Process for 2,5-disubstituted-benzamides SOC D'ETUDES SCIENTIFIQUES ET INDUSTRIELLES DE L'ILLE - DEFRANCE 9 April 1974 [12 April 1973] 15592/74 Heading C2C A process for making compounds (I) in which A is a C 1-5  monoalkylamino or di-(C 1-5  alkyl)amino radical, or a nitrogen-attached heterocyclic saturated ring optionally containing oxygen, sulphur or additional nitrogen atom, or a heterocyclic radical of Formula (IIa) in which R is a C 1-5  alkyl or C 2-5  alkenyl radical and m is an integer of less than 4; B is a C 1-5  alkyl or C 2-5  alkenyl radical; n is 1 or 2, and X is an amino, monoalkylamino, dialkylamino, alkyl or alkenyl radical, their addition salts with pharmaceutically acceptable inorganic or organic acids, and their quaternary ammonium salts, that comprises treating a corresponding 2,5- disubstituted benzoic acid with H 2 N(CH 2 ) n A in the presence of tetraethyl pyrophosphite.
Patent GB-584953-A (GB)
Title: Plunger drives for pumps
IPC: F04B1/12
Filed: 1944-08-16
Abstract: 584,953. Swash plate pumps. NEW YORK AIR BRAKE CO. Aug. 16, 1944, No. 15643. Convention date, Dec. 17, 1943. [Class 102 (i)] In a pump in which several cylinders are arranged parallel and around a shaft 11 and the plungers 9 are reciprocated by swash plates, each plunger is fitted with a shoe having a partly spherical surface 25 engaging the plunges and a flat surface 26 engaging a ring 23 bearing against the swash plate. A short spring 28 is fitted between a collar 24 on the plunger and a sleeve 27 sliding in the plunger and having a portion extending within the spring and a collar portion having a conical end that bears against a second swash plate 29 mounted on the shaft 11 and having an angle slightly different to the other swash plate so that the movements of the sleeve 27 correspond to the movement of the plunger.
Patent GB-633152-A (GB)
Title: Improvements relating to cellulose ether compositions
IPC: C08L1/28
Filed: 1947-06-13
Abstract: A thermoplastic ethyl cellulose composition for extrusion and injection moulding which is not liable to surface changes in the moulded articles made therefrom comprises ethyl cellulose plasticized with a mixture of refined mineral oil and partially hydrogenated mixed isomeric terphenyls.  The latter material is obtained from the waxy by-product formed when benzene vapours are passed through molten metals or molten salts by partial catalytic hydrogenation thereof with a nickel hydrogenation catalyst at a temperature of 160 DEG  to 225 DEG  C. and pressure of 500 to 900 pounds per square inch, and is a clear almost colourless and odourless liquid boiling above 340 DEG C.  Preferred proportions are from one to three parts of this liquid mixed with one part of refined mineral oil.  From 10 to 30 parts of such mixture are added to 100 parts of ethyl cellulose of ethyoxy content 44.5 to 46.5 per cent, and a -butylene sulphone or decyl sulphite may be added as a stabilizer.ALSO:Partially hydrogenated mixed isomeric terphenyls are formed by the hydrogenation of the waxy by-product of diphenyl manufacture produced when benzene vapours are passed through molten metals or molten salts.  The waxy material is treated with a nickel hydrogenation catalyst at 160 DEG  to 225 DEG C., and at 500 to 900 pounds per square inch.  The product is a clear, stable, almost colourless and odourless liquid, boiling above 340 DEG  C.
Patent GB-218819-A (GB)
Title: Improvements in or relating to roads, floors and like surfaces, and to the construction thereof
IPC: E01C5/22
Filed: 1923-06-16
Abstract: 218,819. Hyde, C. F., and Knott, S. June 16, 1923. Composite blocks. -Relates to paving blocks formed of slabs of rubber 6 secured to a concrete base 7 by intervening metal plates 3 having top and bottom anchor members. According to the inventoin, the anchor members 5 for the rubber are formed by the outwardly-turned burrs which result from punching holes 4 in the metal plates, the edges 10 of the plates being bent downwardly and inwardly to anchor in the concrete. The underside of the metal plates may have additional anchor members in the form of stirrups 8. The sides of the block are provided with spacing ribs 9 to facilitate grouting.
Patent GB-553970-A (GB)
Title: Improvements in or relating to antenna systems
IPC: G01S1/08
Filed: 1941-12-09
Abstract: 553,970. Wireless signalling. STANDARD TELEPHONES & CABLES, Ltd., and MADDOCK, A. J. Dec. 9, 1941, No. 15896. [Class 40 (v) ] In an antenna system having one end in proximity to a conductor which emits radiation polarized in an undesired sense, a further conductor is placed in such a position that current induced in it is in phase opposition to the current induced in the first conductor, and thus neutralizes its effect. The invention is particularly applicable to overlapping beam systems in which currents set up in the roof of a building or vehicle give rise to horizontally polarized waves. The currents in the further conductor may be adjusted in magnitude and phase, e.g. by selecting its position relatively to the antenna by tuning it nearly to resonance, by rotating it to vary its capacity relatively to the antenna, by providing an adjustable resistance in series with it &c. Fig. 1 shows two antennae XY, X<SP>1</SP>, Y<SP>1</SP> situated near a conductor MN and a further conductor PQ in which equal and opposite currents are induced.
Patent GB-790790-A (GB)
Title: Improvements in or relating to the refining of impure iron
Inventor: BANNISTER LEONARD CHARLES
IPC: C21C1/00
Filed: 1955-06-02
Abstract: 790,790. Refining impure iron. BRITISH OXYGEN CO., Ltd. May 16, 1956 [June 2, 1955], No. 15898/55. Class 72 A process for partly refining impure iron comprises passing the molten metal downwardly through a tower containing incombustible packing material, preheated to such a temperature that the metal remains molten, in counter current to a stream of oxidizing gas consisting of air, air enriched with oxygen, oxygen mixed with carbon dioxide or steam, or pure oxygen, in such manner that an oxidizing zone is produced at the bottom of the tower and a reducing zone at the top. As shown, a tower 1 may be filled to about one third with coke which is burned by an oxidizing gas from tuyeres 3 additions of lime or limestone being made until the tower is full, combustion being continued until all the coke is burned. Molten metal is then poured over the hot lime'bed and the partly purified metal collected on a renewable hearth 4. Lime or limestone and fluxes, e.g. iron oxide or fluorspar, may be added with the blast and carburizing agents or' other finishing agents may be added in a stream of inert gas, e.g. nitrogen or argon. The tower may be filled with refractory packing and may be heated electrically or by burning fuel gas or oil. It is stated that steel may be produced by passing molten metal repeatedly through the tower or the metal after one or more passes may be converted to steel by any of the well known processes.
Patent GB-443554-A (GB)
Title: Dirigible airships or balloons
IPC: B64B1/00
Filed: 1934-05-29
Abstract: 443,554. Propelling aircraft. MONTILLA Y CABELLOS DE OROPESA, J., 113, Calle San Bernardo, Madrid. May 29, 1934, No. 16024. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 14, 1934]. [Class 4] A balloon 1 is propelled by an airscrew 7 driven from a series of wind mills 4 surrounded by a casing 8 and driving the airscrew 7 through transmission mechanism 6.
Patent GB-236374-A (GB)
Title: Improvements in internal combustion engines
IPC: F01B9/08
Filed: 1924-07-03
Abstract: 236,374. Atkin, W. G. July 3, 1924. Hydraulic transmission of power. - In an internal-combustion engine the power pistons b drive a shaft i through plungers c, water columns d, pistons g, and ratchet clutches j, k. In a twostroke engine there are two such pistons and driving gear, the power pistons being connected by beams e so that while one piston is on its power stroke the other is compressing its charge.
Patent GB-1386758-A (GB)
Title: Method of and apparatus for making an apparently unitary composite facing brick
IPC: B28B11/16
Filed: 1973-04-04
Abstract: 1386758 Extruding brick slabs P S KELSEY 4 April 1973 [10 May 1972] 16041/73 Addition to 1326137 Heading B5A The apparatus and method of Specification 1,326,137, are employed to extrude a brick column comprising a plurality of facing brick slabs sliced from an extruding brick column upstream of a die outlet, and separably reunited by the pressure resulting from the die passage tapering between 2 and 4 degrees, between its inlet and outlet. The wires effecting the dicing are preferably located between 1# and 2“ inches upstream of the outlet.
Patent GB-958805-A (GB)
Title: Improvements in or relating to plunger actuating mechanisms
Inventor: HARTOP ROBERT WILLIAM
IPC: H01H19/635
Filed: 1961-05-03
Abstract: 958,805. Cams. BROOKHIRST IGRANIC Ltd. Feb. 15, 1962 [May 3, 1961], No. 16075/61. Heading F2K. [Also in Division H2] A "joy-stick " lever 3 engages a hole 29 in a linkage plate 25 coupled with rocker plates 14, 15, which have toothed racks on their under surfaces engaging pinion wheels 12, 13, riveted through a mounting plate 7 to cams 8, 9, such that movement of lever 3 causes rotation of cams 8, 9 to engage one or more switch plungers 10a, 10b or 11a, 11b (see Division H2). The plates 14, 15 are pivoted at 16, 19 to plate 7 and are moved individually as linkage plate 25 is moved either longitudinally to deflect plate 14 or in a direction at right-angles to deflect plate 15, or alternatively both plates 14, 15 are deflected if plate 25 is moved diagonally. Gate plates of different shapes can limit lever 3 to movement only in selected directions. Spring loaded arms 18, 21 make lever 3 retractive. Alternatively, a latching modification is described. Specification 833,435 is referred to.
Patent GB-926891-A (GB)
Title: Process for preparing improved compositions of lubricating greases
IPC: C09D5/04
Filed: 1961-05-04
Abstract: Greases based on lubricating oil, lithium soap and organophilic bentonite are prepared by homogenizing the soap and bentonite in the oil until nodules disappear, 1 to 2% of anhydrous methanol, acetone or other known gelifying agent is added and the mixture treated in a suitable apparatus until it attains its maximum consistency, the gelifying agent is then removed by slow heating while stirring to a temperature of from 225 DEG C. to 280 DEG C., and the product then cooled.  Total content of soap and bentonite, in any relative proportion, is from 3 to 20%.  Graphite and molybdenum disulphide can be included.
Patent GB-818466-A (GB)
Title: Improvements in or relating to apparatus for measuring angles
Inventor: BRAYBROOK CLIFFORD HERBERT
IPC: G01C1/02
Filed: 1956-05-24
Abstract: 818,466. Measuring angles. MULLARD RADIO VALVE CO. Ltd. March 13, 1957. [May 24, 1956], No. 16178/56. Class 40 (3). In an apparatus for measuring the angle between a fixed marker 7 and an adjustable marker 8, pulses from a generator P are passed to a counter C through a gate G which is opened and closed when a marker 6 on a rotor 3 passes the markers 7, 8 respectively, means S being provided for synchronizing the pulse generator P and the rotor 3. In one form, the pulse generator directly controls the drive for the rotor. In another form, Fig. 2, a supplementary counter Cf is provided which by means of a feedback p applies a correction to the pulse generator P. Specifications 770,920 and 814,323, [both in Group XXXVIII], are referred to.
Patent GB-1503608-A (GB)
Title: Rotor for an electrical machine
IPC: H02K1/28
Filed: 1975-04-18
Abstract: 1503608 Electrical machine rotors SIEMENS AG 18 April 1975 [6 May 1974] 16211/75 Heading H2A In an electrical machine rotor comprising an inner part 2, an outer part 18, and an intermediate part 6 having recesses 7 for a winding 9, an outer region of the intermediate part 6, and/or the outer part 18, is/are connected to the inner part 2, in force-transmitting manner via radially extending connectors 16 separating the recesses 7; centrifugal forces applied to the winding 9 and to the intermediate part 6 in use of the machine are thereby resisted. The winding 9 may be super-cooled, and part 6 may be of stainless steel, titanium or plastics fibre material.