baber/WOPTO huggingface dataset:
Patent GB-568736-A (GB)
Title: Improvements in or relating to apparatus for detecting toxic or other dangerous gases
IPC: G01N25/32
Filed: 1943-07-21
Abstract: 568,736. Gas analysis. POOLE, R. July 21, 1943, No. 11858. [Class 1 (i)] A gas-detecting apparatus comprises a number of separable tubular elements E each containing a granular catalyst acting on the gas to be detected, and thermopiles interposed between the adjacent ends of some or all of the elements. Each thermopile comprises an annular disc G of insulating material clamped between the ends of adjacent tubular elements, carrying a thermocouple projecting into the granular material. The elements are centrally situated in an outer casing A.
Patent GB-1357868-A (GB)
Title: Cartridge locking mechanism for a miniature tape player
IPC: G11B15/24
Filed: 1973-03-12
Abstract: 1357868 Tape-cartridge players MOTOROLA Inc 12 March 1973 [31 March 1972] 11881/73 Heading G5R A cartridge 14 inserted, Fig. 2, into a tunnel 28 engages a sensing arm 60, which extends through an opening in a side wall 24 of the tunnel 28 and is pivoted on the same pin 40 as a plate 42 to which the arm 60 is coupled by a biasing spring 70, causing an overcentre spring 54 to snap over, Fig. 4, so that a cartridge locking member 48 mounted on the plate 42 moves through an opening in the side wall 24 of the tunnel 28 and engages the cartridge 14.
Patent GB-1343955-A (GB)
Title: Electrical discharge machine power supply
IPC: H02H7/00
Filed: 1971-04-28
Abstract: 1343955 Electro-erosion AMSTED INDUSTRIES Inc 28 April 1971 [15 June 1970] 11966/71 Heading B3V [Also in Division H2] In an electrical discharge machining circuit having at least one power switch 11, 12 controlled by a pulse generator 19, sensing means are connected across the switch or switches for providing a first signal when the voltage across the switch or switches is low. Means 36, 37 are connected to the pulse generator 19 for supplying sampling pulses during the normal off periods of the switch or switches, a coincidence gate 35 provides an output signal when the first signal and a sampling pulse coincide due to the short-circuit failure of a switch, and means respond to the output signal to interrupt the supply to the machine. As shown, the power switches are transistors 11, 12 and the sensing means are voltage dividers 24, 25 and 26, 27  connected to a NAND gate 28 which supplies the first signal to a further NAND gate 35 The output from the gate 35 progressively charges a capacitor in an integrator circuit 4 when the capacitor is not periodically discharged by a short-circuiting transistor in a discharge circuit 43. This transistor is rendered conductive in the periods when neither power transistor 11, 12 is conducting. The output from the integrator 42 causes the operation of a latching switch 38, e.g. a controlled rectifier, a relay 41 and a shut down circuit 23. When a short circuit has occurred, the defective transistor 11 or 12 may be identified by closing a switch 52 which causes a relay to connect an auxiliary source 39 through lamps 56, 57 across the transistors. The lamp connected to the faulty transistor is lit.
Patent GB-1032856-A (GB)
Title: Method of drawing synthetic filaments and apparatus therefore
IPC: D02J1/22
Filed: 1963-03-26
Abstract: 1,032,856. Drawing thermoplastic synthetic filaments. TEIJIN Ltd. March 26, 1963 [April 2, 1962; April 3, 1962], No. 12003/63. Heading B5B. The greater part of the drawing of undrawn thermoplastic synthetic filaments is effected in a drawing bath disposed between the feed rolls and the draw rolls, and in the interval subsequent to the passage of the filaments through the bath and prior to its arrival at the draw rolls, passing the drawn filaments through at least one further bath, the or each further bath being maintained at a temperature from 2‹ to 40‹ C. higher than that of the drawing bath. The temperature of the drawing bath may be from 40‹ to 95‹ C. The bath liquor may be water. The filaments may be polyamide, polyester or polyolefine filaments.
Patent GB-751408-A (GB)
Title: Semi-conductor devices and method of making same
IPC: H01L29/00
Filed: 1954-04-27
Abstract: 751,408. Coating with metals. RADIO CORPORATION OF AMERICA. April 27, 1954 [May 25, 1953], No. 12152/54. Class 82(2). [Also in Group XXXVI] A body consisting of a mixture of acceptor and donor material is fused to a semiconductor body of one conductivity type, to produce a succession of PN junctions. Fig. 2 shows a P type germanium body 3 on which a pellet 14<SP>1</SP> of indium and antimony has been heated at 600‹-700‹C. for five minutes in a non-oxidising atmosphere to diffuse the impurities into the germanium. The proportion of indium to antimony may vary between 1 : 9 and 9: 1. This results in the formation of an N type region 20 and a P type region 16 so that two PN junctions are formed. The difference in segregation coefficient has the greater effect at temperatures below about 700‹C., while the diffusion coefficient difference is predominant at about 850‹C. In place of indium and antimony, the mixture may consist of thallium and antimony, or bismuth and thallium, or in the case of an N-type body, of gallium and antimony, gallium and arsenic or aluminium and antimony. The spacing between the two PN junctions may be controlled by varying the heating and for relative proportions of the impurities materials of the mixture.
Patent GB-267352-A (GB)
Title: Improvements in weighing scales
IPC: G01G1/00
Filed: 1926-05-11
Abstract: 267,352. Marks, E. C. R.., (Toledo Scale Co.). May 11, 1926. Plalform machines; pendulum-weight apparatus.- In a weighing scale of the kind wherein an auxiliary commodity receiver may be placed upon the platform to accommodate articles and commodities for which the platform is unsuitable, the auxiliary commodity receiver when placed upon the platform is balanced by placing a weight upon a lever of the scale. An arm 17 pivoted upon the casing has a slotted portion 19 for picking - up the auxiliary weight 20 or for depositing the same upon an intermediate lever 6 fulcrumed within the column 3 and forming part of the weighing system. With the arm 17 in the position shown, the weight is supported entirely by the lever. When the arm is moved to the left it is retained in its extreme position by a spring plunger 28 and the weight is thus removed from the lever and is supported entirely by the slotted portion of the arm 17. The rear face of a fixed portion 24 bears the inscriptions " Scoop on " and " Scoop off." One or other of these inscriptions is masked by a portion of the arm 17 in its two positions so as to indicate to the customer when the auxiliary commodity-receiver 14 should be placed upon or removed from the platform 2.
Patent GB-300541-A (GB)
IPC: B60Q1/34
Filed: 1928-04-26
Abstract: 300,541. Hoffmann, E. Nov. 14, 1927, [Convention date]. Road - traffic signals on vehicles. - Comprises a direction signal device coupled with the steering axle or axles of a tov vehicle. The pivoted axle a is moved by a Bowden wire mechanism s and the movement is transmitted through toothed quadrants c, d and a lever e to a transverse sliding rod f the ends of which are formed as arrows p which project at either side of the vehicle as a signal. Instead of arrows, the ends of the cross bar f may be provided with strips of red glass m which are projected in front of the small head lamps n.
Patent GB-461166-A (GB)
Title: Improvements relating to arrangements for dividing grain cargoes on board ships
IPC: B63B3/56
Filed: 1936-04-30
Abstract: 461,166. Cargoboards. MAIN, H. April 30, 1936, No. 12280. [Class 113 (i)] Grain cargoes are separated by portable steel divisions, the sections 1 of which are provided with stiffening flanges at their upper and lower edges 2, 3. The edges of the section are supported by channels carried by the adjacent structure. The sections are varied in depth so that when out of use they may be nested as shown in Fig. 3.
Patent GB-1494726-A (GB)
Title: Fastener
IPC: F16B21/02
Filed: 1976-03-26
Abstract: 1494726 Stud and socket fastenings HARTWELL CORP 26 March 1976 [17 April 1975] 12293/76 Heading E2B  A fastening comprises a socket 1 having a rectangular head 2 composed of side portions 3 joined by offset webs 4. A pair of parallel stems 5 extend from portions 3 which converge into bearing faces 8. A pair of fingers 11 extend inwardly, one on each stem 5. The stud 12 has a head 13 with screw-slot 14 and a shank 15 having an annular groove 17. The end of the shank 15 has side faces 18 converging to rectangular end 19. The stud 12 and socket 1 are formed in one piece, connected by frangible link 20. In use the socket 1 is passed through holes in elements 21, 22, the stud inserted (position of Fig. 3) and then rotated (Fig. 4) where the long axis of rectangular end 19 lies between bearing surfaces 8 forcing the stems 5 apart to engage with members 21, 22. Release is obtained by reverse rotation. The stud is held permanently in the socket by means of the engagement of fingers 11 in annular groove 17. In an alternative embodiment the fingers 11 are replaced by inwardly pointing ends 29 of the stems and the stud is held by the engagement of projections 32 on the base of the stem under either those ends 29 or the underside of stems 5. A handle 23 may be provided to engage in screw-slot 24.
Patent GB-833308-A (GB)
Title: New stainless steels and methods of preparing them
Inventor: NIJHAWAN BAL RAJ
IPC: C22C38/38
Filed: 1958-04-18
Abstract: A corrosion resistant alloy steel has a composition in per cent by weight within the range Cr 20.0-22.0, Mn 12.0-14.0, N 0.5-1.0, Fe and impurities the remainder.  The alloy may also contain C up to 0.1 Cu 0.8-1.2, Ni e.g. 0.02-0.09, Si up to 1.0, S up to 0.06, P up to 0.06. The alloy may be made by melting nitrided electrolytic manganese and low-carbon ferro-chrome in a high frequency furnace and adding low carbon iron, copper and then ferrosilicon, or by adding a nitrogen-rich chromium-manganese-iron master alloy to a melt of low-carbon chromium stainless steel or low-carbon steel.  The master alloy may be prepared by adding nitrided electrolytic manganese to low-carbon ferrochrome and deoxidizing the melt with ferro silicon. The following applications of the alloy steel are referred to, namely dairy equipment, wash basins, lavatory pans, automobile fixture, liquid fertilizer tanks, hospital fittings.
Patent GB-475633-A (GB)
Title: Jigging screen
IPC: B07B1/28
Filed: 1936-11-30
Abstract: 475,633. Sifting-apparatus; connecting-rods. COPPEE & CIE, E. Nov. 30, 1936, No. 12338/37. Convention date, Oct. 26, 1936. Divided application. [Class 117] [Also in Group XXVI] In sifting-apparatus of the kind in which the screens are reciprocated by a rotating member such as a crank and connecting- rod and in which the connecting-rod is attached to the screen through the medium of a stiff resilient strip, the resilient strip 13 is gripped in forks respectively integral with the connecting- rod and the screen box by soft steel keys 16 and bolts 14. The keys are preferably of square cross-section with turned-down corners so as to bed closely into opposite V-shaped grooves in the end of the strip and the inner faces of fork 6d. The fork at the end of the connecting-rod is formed integrally therewith, and the fork on the screen box is formed of two plates 18, 19 secured to the cross-bar 2a which is attached to the screen. An adjusting piece 21 with a cylindrical seating for the plates 18, 19 is provided. Adjustment of the plates both in the plane of and at right angles to the strip is allowed for by making the bolt holes 2d and 21a in the cross-bar and the plates respectively elongated in the required direction.
Patent GB-437205-A (GB)
Title: Improvements in or relating to burglar alarms
IPC: G08B13/183
Filed: 1934-04-24
Abstract: 437,205. Safety-devices for shop windows. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and KRAMER, J. B., Witton-Kramer Electric Tool & Hoist Works, Witton, Birmingham. April 24, 1934, Nos. 12356 and 12774. [Class 116] [See also Group X] An arrangement for preventing the theft of display articles in a shop window comprises the use of a beam of radiant energy, which is caused to pass in a zig-zag path across a window, and a vertically movable table which is caused to descend as soon as the ray is interrupted. The articles rest on a table 13 which carries brackets 14 and sleeves 15, the table being supported in elevated position by arms 21 engaging stops 19 on the sleeves ; the arms are moved to release the stops by means of linkwork actuated by a solenoid 23, the armature of which is spring released when the ray is broken and the photocell used in conjunction therewith is de-energized. A spring or weight 29 may assist the descent of the table and its fall is broken by a dashpot 30. A shutter is adapted to be released at the same time to cover the space previously occupied by the table.
Patent GB-577991-A (GB)
Title: Process and apparatus for making felts
IPC: D04H1/54
Filed: 1943-07-30
Abstract: 577,991. Fabrics composed of agglutinated fibrous materials. SYLVANIA INDUSTRIAL CORPORATION. July 30, 1943, No. 12376. Convention date, Aug. 3, 1942. [Class 140] Thick. low-density felts are made by confining a thick layer of dry, loose, intermingled textile fibres comprising thermoplastic fibres between porous members without subjecting the layer to substantial pressure and passing steam through the layer while so confined, the steam having a temperature sufficient to melt, dissolve, or soften the surface of the thermoplastic fibres to bind fibres in the felt without destroying the fibrous character of the thermoplastic fibres. The thermoplastic fibres may be of cellulose esters, ethers, or ester-ethers, synthetic resins such as polymers of coumarone, indene, vinyl compounds such as vinyl halides, vinylidene chloride, acrylic acid or its homologues or derivatives, butadiene, isobutylene, or chloroprene, copolymers of vinyl halide and vinyl acetate or an acrylic acid derivative, condensation products of an aldehyde with phenol, urea, an amine, or a sulphonamide, alkyd resins, nylon, and olefine polysulphide. Mixtures of resins with one another or with cellulose derivatives may be used. An example describes the manufacture of a battery separator from thermoplastic fibres alone, the fibres being made of a copolymer of vinyl acetate and vinyl chloride, and formed into a layer by carding. Alternatively the thermoplastic fibres may be used to bond other fibres which are not rendered tacky by the steam treatment, including cotton, flax, jute, kapok, silk, cellulose hydrate, cellulose derivatives, synthetic resins, natural and synthetic rubber and derivatives thereof, spun glass. asbestos, and mineral wool. The two kinds of fibre may be mixed by carding or in an air stream, in which case they may be blown in or on a mould to form a shaped product. The softening point of the thermoplastic fibres may be raised after the felt is made by extracting plasticizer therefrom by means of a solvent. The felt may be treated with steam while confined between a pair of flat or shaped porous-surfaced hollow platens to the interior of one of which steam may be supplied while the other is exhausted. Alternatively a felt web 6 may be led between the porous covering 1 of a rotating hollow perforated drum 2 and an endless porous tensioned travelling belt 7, while steam supplied by a pipe 4 to the interior of the drum passes outwards through the porous covering, the felt, and the tensioned belt. Specification 547,288 is referred to. The Specification as open to inspection under Sect. 91 comprises also the use as non-thermoplastic fibres of wood pulp fibres, and filaments made by slitting, cutting, or shredding non- fibrous films such as regenerated cellulose. This subject-matter does not appear in the Specification as accepted.
Patent GB-759149-A (GB)
Title: Automatic packing apparatus for glass sheets
Inventor: SHIBATA SUNAO
IPC: B65B23/20
Filed: 1953-05-04
Abstract: 759,149. Step-by-step conveyers; roller-way conveyers. KAISHA, A. G. K. May 4, 1953, No. 12379/53. Class 78 (1). [Also in Group XVII] Apparatus for inserting stacks 6 of glass sheets into crates (see Group XVII) comprises a roller-way 3, which is slidably mounted on a frame 40 for reciprocation by a lever 14 operated by a cam 13, and a slidable carriage 4 which supports spring-loaded retractable fingers 5 and is fitted with racks meshing with pinions 9 driven by a reversible electric motor 1. As the carriage 4 is moved to the left, the fingers 5 engage the stacks and move the leading stack over the rollers 3<SP>1</SP> into a crate supported by a pivoted holder 17. At the same time, the roller-way is moved to the left by the cam to bridge the gap between the frame 40 and the holder 17. When the carriage reaches its extreme position a switch is tripped to reverse the motor so that the carriage returns to its starting position, the fingers being swung downwardly as they pass under the next stack to be inserted. The drive to the cam 13 and crank 15 includes a pawl and ratchet 10<SP>11</SP>, 101 whereby it is automatically disengaged when the motor is reversed.
Patent GB-1100692-A (GB)
Title: Excavator bucket assembly
Inventor: PAGE JOHN WILLIAM
IPC: E02F3/60
Filed: 1965-03-16
Abstract: 1,100,692. Dragline excavators. PAGE ENGINEERING CO. 16, March, 1965, No. 12491/67. Divided out of 1,100,691. Heading E1F. The hoist and dump lines of a drag line bucket are so applied to the bucket, which has a fulcrum portion between the bottom and rear walls thereof, that the bucket is  rocked on the fulcrum to raise the digging edge of the bucket to prevent spillage thereof without adjustment of the dump line when the lift line is wound in to raise the bucket. The beam providing for connection of the lift and dump lines to the bucket forms the subject matter of the referred to Specification 1,100,691.
Patent GB-978519-A (GB)
Title: Polymerisable compositions
Inventor: GAZZARD EDWARD GEORGE
IPC: C08L63/02
Filed: 1962-04-02
Abstract: A  composition  that  hardens  on  heating comprises a copolymer of 40-65% by wt. of methyl methacrylate, 25-45% by wt. of an alkyl acrylate containing not more than 12 C atoms and 10-15%  by wt.  of an  ethylenically  unsaturated carboxylic acid,  a  polyepoxide,  an organic base catalyst, and a solvent. The exemplified epoxide  is  a condensation  product  of diphenylol propane with epichlorohydrin. The exemplified acid is acrylic acid and the other comonomers may be ethyl, butyl, and 2-ethylhexyl acrylate. The polyepoxide may be present in an amount greater than 15 parts per 100 parts of polymer, and the catalyst in an amount of 0.1 to 2.0 parts per 100 parts of copolymer.
Patent GB-579118-A (GB)
Title: Improvements in or relating to remote control arrangements
IPC: G08C19/22
Filed: 1941-09-30
Abstract: 579.118. Electric signalling and control systems. STANDARD TELEPHONES & CABLES, Ltd., and SCULLY, C. T. Sept. 30, 1941, No. 12662. [Class 40 (i)] Signalling and control is effected by transmitting pulses of constant amplitude with subtantially linear trailing and leading edges, the duration of the pulses being varied in accordance with a controlling variable, e.g., the position of a meter. The pulses are transmitted directly or by carrier trains, and at the receiver are shaped by amplification and removal of the tips and roots, the mean D.C. value obtained from them being indicated or used to control a motor for effecting a desired operation. The transmitter, Fig. 6, comprises a valve having constant A.C. input from source f and variably biassed by potentiometer R2 controlled by the instrument or variable by the reading the value of which it is desired to transmit. The valve therefore passes the positive peaks of the A.C. voltage, as shown in Fig. 3, the amplitudes being dependent on the value of the variable. The resultant impulses are amplified and limited in amplitude by valve V2 to provide the wave form shown in Fig. 4 which is used to modulate a transmitting oscillator V3, the depth of modulation being determined by potentiometer R11. In a modification, Fig. 7 (not shown) the amplitude of A.C. voltage from a constant source is determined by a variable condenser controlled in accordance with the instrument reading or value of the variable. One form of receiving arrangement is shown in Fig. 10, in which the output of the high frequency receiver is applied to the cascade amplifier shown. The second and third valves are respectively, positively and negatively, biassed to saturation and cut-off to remove the distorted upper and lower portions of the wave form and retain the central undistorted portions. A voltmeter connected across XZ or a galvanometer G provides a reading of the average intensity. In a modification shown in Figs. 11, 12 utilizing a servomotor at the receiver for driving a load in accordance with the transmitted variable, the apparatus 10-14, Fig. 11, comprises the transmitter previously described, and 16, 17 comprise the high-frequency receiver and limiting amplifier. The load 18 is moved by motor 19 and a device 23 positioned in accordance therewith is used to control an A.C. source 21 applied to impulse generating and limiting stages 22, 24 as at the transmitter. The source 21 may be a saw-tooth oscillator synchronised by the received pulses at 17. The outputs from 17 and 24 which represent respectively the controlling variable and the position of the load 18 are used to control differential relay arrangements 25, 20 which control the motor. The differential relay, Fig. 12 comprise valves V12, V13 receiving respectively the outputs of 24, 17 and having anode resistances R33, R34 coupled by condenser C16 having a suitable time constant. The two positions and centre zero relay W operate contact X or Y depending on the relative values of the outputs to control the motor 19.
Patent GB-1370168-A (GB)
Title: Friction materials
IPC: F16D69/02
Filed: 1972-03-17
Abstract: 1370168 Sintered bronzes JURID WERKE GmbH 17 March 1972 [26 April 1971] 12753/72 Headings C7A and C7D A sintered bronze friction material consists of 60 to 91% of copper or bronze, but not including binary lead bronzes, 4 to 15% of titanium and/or one or more metals of Groups VI, VII and/or VIII, and 5 to 25% of graphite, 20 to 80% of the graphite being artificial. It is preferred to use hot-worked electro-graphite as the artificial graphite, the remainder being natural Camellor graphite. The pulverulent constituents are mixed and cold pressed at 2 to 4 Mp/cm<SP>2</SP>, sintered at 600 to 800C, again pressed at 2 to 4 Mp/cm<SP>2</SP> and finally sintered at 1100 to 1200 C. The friction materials are particularly suited for use in brakes where they cause less wear on the counter-materials, e.g. on grey cast iron. A specified composition is:- 80% copper 5% cobalt 7% natural graphite 8% artificial graphite
Patent GB-272466-A (GB)
IPC: F27D1/14
Filed: 1927-05-12
Abstract: 272,466. Porcherot, R. June 10, 1926, [Convention date]. Roofs; walls. - Roofs or refractory walls of furnaces are formed with blocks having their upper portions recessed or set back on all sides so that a network of air-circulating passages is formed outside the furnace. Thus the upper ends of the brick shown in Figs. 1 and 2 are reduced at b<2> and a trough-shaped cavity c is provided to receive the end of the iron suspension rod. In cases where forced circulation is used, the recesses b<2> are channel-shaped. Fig. 7 shows supporting means for the bricks comprising a metal rod f supported from the framing j and carrying a supporting pin e passing through the brick.