baber/WOPTO huggingface dataset:
Patent GB-1391473-A (GB)
Title: Electrographic charge transfer plate and method of making same
IPC: G03G5/085
Filed: 1972-04-05
Abstract: 1391473 Photoconductive layer VARIAN ASSOCIATES 5 April 1972 15716/72 Heading C1M [Also in Division G2] A photoconductive porous layer comprises a matrix of interconnected photoconductive crystals (19) bound by a glass binder (20) coating the outer surfaces of the layer and, the surfaces of the interstices of the matrix and an insulating material coating (21) the binder (Fig. 3). The insulating material may be an acrylic or vinyl resin or ethyl cellulose and is coated on the glass binder as an organic solvent solution or as an aerosol. Alternatively methyl methacrylate monomer optionally containing acrylic resin may be impregnated into the interstices and polymerized in situ or an epoxy resin is vacuum impregnated as it cures. The photoconductive crystals may be a sulphide, telluride or, selenide or sulpho-selenide of Cd or Zn incorporating a chloride and Cu or Ag as activators.
Patent GB-501322-A (GB)
Title: Mould carrier in machines for die casting metal under pressure
IPC: B22D17/22
Filed: 1938-05-26
Abstract: 501,322. Casting-machines. INJECTA AKT.-GES. May 26, 1938, No. 15723. Convention date, May 29, 1937. [Class 83 (i)] Castings, extracting clamping and guiding moulds.-The slide 1 carrying the movable mould half 5 of a pressure casting-machine has the parts, adapted to receive the mould plate 9, the core plate 13, Fig. 3, and the ejector plate 19, open at the upper side so that these parts can be inserted from above. The mould plate is received in a groove 10, in slide I and held by screws 25, Fig. 2, and levers 24 pivoted at 26 and the core plate in a groove 111, Fig. 3, in the lower part of a tubular slide 11, having legs 14, 14a passing through holes in a plate 18 carried by tubular slides 21, Fig. 2. The ejector plate, after insertion into the slide 11, is secured by clamps 22 to the plate 18 and the upper part of the slide 11, with its leg 15, is then placed in position and clamped by a screw to a member 20 to which the legs 14, 14a are connected. A hinged cover member 12 of the slide I is then closed and secured.
Patent GB-384317-A (GB)
Title: New intermediate products and azo-dyestuffs therefrom
Filed: 1931-05-29
Abstract: Azo dyes are made on the fibre by coupling a diazo compound of the benzene series devoid of azo, sulpho, nitro, cyano or carboxy groups with 4 : 4<1> - bisacetoacetyldiaminostilbene or 2 : 2<1> - dichloro - 4 : 4<1> - bisacetoacetyldiaminostilbene.  The coupling components have a high substantivity for cotton and the dyeings are exceptionally fast to kier-boiling.  In examples the following diazo components are specified: 4-, 5-, and 6 - chloro - o - toluidine, o - and m - chloraniline, 4 - chloro - o - anisidine, 2 : 5 - dichloraniline.  Specifications 210,217 and 211,772, [both in Class 2 (iii), Dyes &c.], are referred to.  4 : 4<1> - Bisacetoacetyldiaminostilbene and 2 : 2<1> - dichloro - 4 : 4<1> - bisacetoacetyldiaminostilbene are made by heating the respective diamine with two molecular parts of an acetoacetic ester in the presence of a solvent or diluent, e.g. chlorobenzene and advantageously in presence of a tertiary organic base e.g. pyridine.
Patent GB-570125-A (GB)
Title: Improvements in inductor alternators
IPC: H02K19/24
Filed: 1943-09-27
Abstract: 570,125. Inductor alternators. BRITISH THOMSON-HOUSTON CO., Ltd., and WALKER. J. H. Sept. 27, 1943, No. 15819. [Class 35] An inductor-alternator has its exciting winding B in an even number of open stator slots D, the pitch of which is twice the rotor slot pitch and the width of the stator slots at the air gap equals one rotor slot pitch, while the A.C. windings A are in slots C at the centres of the teeth F between the exciting winding slots. The wedges H closing the exciting winding slots may be united by end rings to form a cage type damping winding. Specifications 554,827 and 570,107 are referred to.
Patent GB-554335-A (GB)
Title: Improvements in electroplating
IPC: C25D3/18
Filed: 1942-11-11
Abstract: 554,335. Pyrimidine derivatives. UNITED STATES RUBBER CO. Nov. 11, 1942, No. 15916. Convention date, Feb. 21. [Class 2 (iii)] [Also in Group XXXVI] The sulphuric acid conversion products of alkyl-substituted 2-mercaptodihydropyrimidines, and their salts, particularly 2-mercapto-4, 6, 6-trialkyldihydropyrimidines, are employed as brightening agents in aqueous acid sulphate or chloride plating baths of nickel group metals. The reaction product with 2-mercapto-6- methyl-4, 6, -diethyl dihydropyrimidine, which may be prepared as described in U.S.A. Specification 2,234,848, is especially suitable and is prepared as follows. 300 grams of the substance are added to 600 c.c. of 95 per cent. H 2 SO 4  the mixture being stirred and cooled to from 20‹C.-40‹C., and after evolution of heat ceases, warmed until no more SO 2  is evolved. To the cooled mixture is added a suspension of Ca(OH) 2  in 3 litres of water forming the calcium salt of the sulphonated or sulphated derivative from which by addition of Na 2 CO 3  solution the sodium salt is formed, the CaCO 3  being filtered off and the solution evaporated to yield a yellowish white crystalline mass.
Patent GB-1332242-A (GB)
Title: Packaging
IPC: B65B9/06
Filed: 1972-04-06
Abstract: 1332242 Packaging machines; forming tubes SCHWEIZERISCHE INDUSTRIE-GES 20 May 1971 [3 June 1970] 15941/71 Heading B8C [Also in Division B5]  A machine for packaging articles in tubular wrappings comprises a folding box 15 which turns the edges of a web 13 inwardly to form a double tube, pushers 8 on endless chains 5 which insert articles 1 on twin tracks 2 into the double tube at spaced intervals, heated opposed driven rollers 35, 36 which form a longitudinal seam between the two edges and the web, followed by a rotary knife or perforator 37, and transverse driven rollers 43, 44 carrying grooved, heated sectors 45, 46 with a knife 49, which form seams across and separate the packages 54. Web 13 may be of paper in which case a heat sealing glue is used at the seams, or of thermoplastics. In another embodiment, web 13 is drawn from a reel below conveyer 2, and the side edges are turned downwardly instead of up to form the double-tube. The pushers are mounted above the articles in this form.
Patent GB-1096575-A (GB)
Title: A mounting assembly for a semiconductor device
Inventor: DOBSON CHRISTOPHER DAVID
IPC: H01S5/024
Filed: 1965-04-14
Abstract: 1,096,575. Semiconductor devices; lasers. STANDARD TELEPHONES & CABLES Ltd. April 7, 1966 [April 14, 1965], No. 16040/ 65. Headings H1C and H1K. A semiconductor device 1, such as a gallium arsenide diode, laser or Gunn effect device, is clamped between the flat faces 7, 8 of two rigid metal, preferably copper, mounting pieces 2, 3 which together form a T-shaped assembly split down the stem of the T and provide heat conduction paths from the device to a flat surface 9 perpendicular to the clamping faces. The mounting pieces are clamped together by an insulating bolt 5 and form the electrical contacts to the device, and the abutting surfaces of the pieces and the device are preferably coated with indium. A spacer 4 is inserted between the mounting pieces adjacent the surface 9 which is placed in contact with, or seals an opening in, a cryostat. A square section tubular glass window (21, Figure 3, not shown) may be clamped between the faces 7, 8 to enclose the device.
Patent GB-1075047-A (GB)
Title: Welding flux
IPC: B23K35/36
Filed: 1966-04-12
Abstract: A welding flux particularly for submerged are welding of low alloy steels consists of by weight:- .Al2O3.5 to 15% .MnO.from O to 15% .NaF.20 to 55% .SiO2 and CaO.Balance in a ratio of SiO2; ..CaO of 2.08: to 1 : 1 The flux may also include metal of the same analysis as the electrode or steel being joined and may be produced by fusion, sintering or bonding with sodium silicate and crushed and screened to from granules.  Alternatively the flux may be used as a core of a hollow tubular welding wire.  HY - 80 steel plates are welded using a5/32" steel welding wire with a single vee 45" bevel groove butt joint using a D.C. reverse polarity at 550 amps. arc current and 27 volts arc voltage with the electrode moving along the weld at 20" per minute.
Patent GB-269119-A (GB)
Title: Improvements in or relating to sheet delivery apparatus for printing or like machines
IPC: B41F23/06
Filed: 1926-06-25
Abstract: 269,119. Kelly, W. M. April 7, 1926, [Convention date]. Printing-apparatus combined with drying- apparatus.-Sheets are heated after leaving a printing or like machine by a burner positioned adjacent to the path of the sheets, the supply of gas to which is controlled by a spring-closed valve which is opened only while the machine is running by a device frictionally-coupled to the driving-mechanism. The sheets pass from the printing-machine 10, Fig. 1, to delivery tapes 12, 16, the latter of which are mounted on a reciprocating carriage 17 so as to deposit the sheets on a delivery table in the ordinary way. A burner 29, constituted by a perforated pipe, is fixed to the end of the carriage 17 and is connected to the supply pipe 35 by a valve 32 and flexible tube 33 so as to allow of the reciprocation of the carriage. Intermediate the pipe 35 and the main 43 is the control device C, which comprises a casing 47, Fig. 3, having mounted therein a spindle 49 driven from the machine by a belt 45 passing around a pulley 53. A disc 50 is fixed to the spindle inside the casing, and is in contact with - second disc 56 which is loose on the spindle. When the machine is running, the frictional contact between the discs, which is assisted by oil 54 contained in the casing, causes the disc 56 to be turned, and a stop 57 on the disc engages the stem 58 of a valve 65 pressed downwardly by a spring 70, so as to raise the valve and allow gas to pass from the inlet 68 from the pipe 43 to an outlet 60 into the pipe 35. The valve is closed by the spring 70 when the machine stops. A pilot light on the carriage 17 is connected by a small flexible tube to an outlet 66 in the device C which is always in communication with the main 43.
Patent GB-1468728-A (GB)
Title: Gas analyzing
IPC: G01N21/35
Filed: 1974-04-11
Abstract: 1468728 Gas analyzer SENSORS Inc 11 April 1974 [28 June 1973] 16107/74 Heading G I A A gas analyzing structure comprises a plurality of gas analyzer units 36, supported in an arcuate path in a housing, each having a single infrared source 120, from which radiation is directed by mirror 84 along sample and reference gas paths 96, 94 to a single detector 122 via mirror 86, a single chopper disc 52 having windows 140, 142 permitting radiation to the sample gas paths and 144, 145, 146 to the reference paths. Detector 122 feeds channel means 236 and 238 with signals from the sample and reference paths respectively. Phototransistor 172, illuminated by lamp 64, through windows 140, 142, generates signals in phase with the passage of infrared through path 96, which, via circuit 252 and gate latch 256, render FET 214 conducting. Due to the negative symmetry of windows 144-6, FET 250 is made conducting when photo-transistor 174 is dark. If V s  + V 2  are the signals from the sample and reference paths, when FET 214 conducts, amplifier 220 adds signals via FET 214 and resistor 216 to those via resistor 224 to give at terminal 228 2 (V s  + V r )-(V s  + V r ), which equals V s  + V r . When FET 214 is non-conducting, the signal at 205 is V s  + V r  inverted by amplifier 220 to -(V s  + V r ) at 228. Owing to this inversion the mean output at terminal 228 is V s  and is averaged by filter 232, 234, 235. Similarly the output at terminal 247 is -Vr. After combination, inversion by amplifier 276 gives an output of V r -V s . Alternative circuits give outputs of V s /V r  or (V s -V r /Vr or (V s -V r )/ (V s +V r ). A variable gain amplifier may be inserted between capacitor 204 and point 205 and controlled by feedback from point 247 to give automatic gain control. In another embodiment the radiation passes from an enclosed source to an enclosed detector through a space open to the exterior which may contain the gas. The two paths are determined by filters of different wavelengths. Alternatively a cell in the space may form the reference path. Lenses may be used for collimation. Specification 1468727 is referred to.
Patent GB-1322492-A (GB)
Title: Ciphering machine
IPC: G09C1/12
Filed: 1960-01-12
Abstract: 1322492 Ciphering apparatus NETHERLANDS MINISTRY OF DEFENCE 12 Jan 1960 16224/63 Divided out of1322491 Heading G5X The description is the same as that of Specification 1,322,491 but the claims differ, being directed towards features of electrical operation of the machine.
Patent GB-410619-A (GB)
Title: Improvements in or relating to electron discharge devices and circuits incorporatingthe same
IPC: H01J21/20
Filed: 1933-06-06
Abstract: 410,619. Thermionic valves; valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and SHRADER, T. M., 40, Laurel Drive, West Summit, New Jersey, U.S.A. June 6, 1933, No. 16278. Convention date, July 12, 1932. [Classes 39 (i) and 40 (v).] A valve comprises within a single envelope a multi-electrode assembly, a plate, one or more grids, a cathode, a pair of anode electrodes adjacent a portion of the cathode so as to form with it a pair of diodes, and electrostatic means shielding the diode anodes from the multielectrode assembly. In one form, Fig. 1, a triode assembly comprises an indirectly-heated cathode 17 having a non- inductively wound heater, a grid 16 and an anode 15 spaced and supported by insulating plates 19, 20. The upper spacer 19 is preferably a cruciform sheet of mica. Metal clips 21 secure the wings of the anode 15 to the spacers. The cathode is extended below the spacer 20 and is surrounded by ring-shaped diode anodes 22 supported on leads 23. The cathode is oxide-coated only on its upper and lower portions, the middle being left free. A metal hood 26, mounted on stays 27 and steadied by the cathode lead 24, screens the anodes 22 from the triode assembly. Fig. 5 shows a circuit for use with the valve. The diodes 22 form with the cathode 17 a fullwave detector. The radio-frequency component is byepassed by a condenser 39. the audio-frequency is applied through lead 36 to the grid 16 of the triode and the unidirectional voltage supplies an automatic volume control stage through lead 40. In a modification, the grid 16 is given a fixed bias and is coupled to the centre-tap 35 through a condenser. In another form, Fig. 7, the diodes are coupled with separate circuits 48, 49. Circuit 48 comprises a condenser 39 byepassing the radio-frequency component and is coupled to the grid 16 by a condenser 46. Circuit 49 comprises a condenser 39 bye-passing both radio and audio-frequencies and supplies a unidirectional voltage through lead 40 to an automatic volume control stage.
Patent GB-862259-A (GB)
Title: Improvements in and relating to electric circuit breakers
IPC: H01H73/30
Filed: 1959-05-12
Abstract: 862,259. Automatic circuit breakers. MECHANICAL PRODUCTS Inc. May 12, 1959 [June 9, 1958], No. 16279/59. Class 38 (5). A circuit breaker has two series hot wires 302 (only one shown) connected at 316 by a first order lever or a single wire arranged around a pulley to be equivalent to two series wires. A spring 384 tensions the wires and when they expand is allowed to move arm 370 of catch 362 to release the contact assembly 324 whereupon plunger 326 is urged downwardly by spring 346. Lower plunger 338 also moves downwardly when the roller catch 352 releases, and the breaker is manually actuated by pulling knob 340 down to release the catch 352 and thus to allow both plungers to move downwardly. The breaker is trip free and cannot be reset by pushing in knob 340 until the wires have cooled sufficiently to allow the catch 362 to engage the contact assembly 324 and thus to pivot the assembly about the centre pivot when fixed contact 312 and moving contact 322 can be pushed together by the movement of the knob 340. Specification 848,522 is referred to.
Patent GB-146104-A (GB)
Title: Means for facilitating the composition of tables on typographic composing machines
IPC: B41B25/00
Filed: 1920-06-16
Abstract: 146,104. Soc. Anon. de Publications Periodiques, (Assignees of Snelling, W., and Bellavoine, L. H.). June 24, 1919, [Convention date]. Strip-perforating machines; justifying type. - Relates to means for putting out of action the paper-feed mechanism of record-strip composing- machines such as that described in Specification 17199/08 in order to facilitate the composition of tabular matter. The justifying mechanism is set for the column containing the longest line, and the differences between this and the shorter lines are noted. In composing each of the columns containing shorter lines, the difference in length between it and the longest line is transferred to the units-wheel by repeated depression of the ems-key and depression of the appropriate justification-key, the paper-feed mechanism being meanwhile held out of action. This is effected by means of a piston D which acts through a lever B on the rod A of the paper-feed mechanism and is controlled by a valve operated by a finger-piece E. Specification 1187/12 is referred to.
Patent GB-459649-A (GB)
Title: Improvements in and relating to valves
IPC: F16K15/16
Filed: 1936-06-11
Abstract: 459,649. Compressors. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. June 11, 1936, No. 16337. Convention date, June 11, 1935. [Class 8 (i)] [See also Group XXIX] A valve assembly for the compressor of a refrigerating machine or the like comprises a plate 18 which forms a head to the compressor cylinder 15, and is perforated with an inlet passage 19, discharge passages 20, and a relief passage 46, the inlet passage 19 being normally closed by the enlarged end 24 of a flexible tongue integral with a thin plate 21 apertured so as not to obstruct the discharge and relief passages, and the relief passage 46 being controlled by a spring- pressed valve. Movement of the flexible tongue inlet valve 24 is limited by a stop on the cylinder, and the valve is operated for unloading by means 41 as described in Specification 459,616. The exhaust valve 26 with retainer 27, controlling the discharge passages 20, which are arranged on the circumference of a circle, is described more fully in Specification 459,648, [Group XXIX].
Patent GB-149121-A (GB)
Title: Improvements in releasing valve-gears for duplex pumps
IPC: F04B9/12
Filed: 1919-09-02
Abstract: 149,121. Twells, A. H Sept. 2, 1919. Releasing - gears for actuating the lift and Corliss. valves of duplex pumps comprise a lever with a movable fulcrum as described in Specification 22332/14. A fulcrum s actuated by the adjacent cylinder moves between stops y, z, and has mounted thereon a lever v actuated by the cross-head. The lever v is connected to a rod e provided with adjustable expansion-controlling stops p, q, and a rod f is mounted at e on the lever carrying the fulcrum s, and has bell - cranks m, mounted, thereon and retained by springs so as normally to maintain their arms vertical and horizontal respectively. In the position shown in Fig. 1, the lift valve b<1> is admitting steam to the left-hand side of the piston. As the piston and the lower end of the rod v move to the right, the rod e and stops p, q move to the left. The valve b<1> is released, and the lever n engages the lever d, Fig. 2. When the pivot s is moved by the adjacent cylinder, the valve b<2> is opened, and lever m brought into position to engage the lever c. In a modification shown in Fig. 5, the gear is adapted to work the Corliss valves of a triple-expansion duplex pump. The exhaust valves and the detent releasing-mechanisms are operated by wrist plates M, N, 0 arranged coaxially with wrist plates P, - Q, R, respectively, which open the inlet valves and bring the reieasmg-parts into engagement. Levers S, T in each pump-element are connected by links \V, X to a Lever Y which actuate through lost-motion members Z secured to shafts j, j carrying levers i at their end upon which the fulcra, s movable between stops y, z are mounted. Each pump, towards the end of the stroke, moves the movable fulcrum of the adjacent pump and lever v mounted upon it, which is connected to its pump cross-head. The short arm h of lever v is connected by rod e to the plates M, N, 0, and the end g of l,ever i is connected by rod f to the plates P, Q, R.
Patent GB-1034873-A (GB)
Title: Heat-curable epoxy resin compositions
IPC: C08G59/42
Filed: 1963-04-25
Abstract: A thermosetting resinous composition comprises an epoxy resin and as curing agent therefor a polyanhydride of the formula <FORM:1034873/C3/1> where R is an unsubstituted, aromatic or saturated aliphatic hydrocarbon radical, an organosilicon radical or a divalent metal atom, each A is -O-, or -NH-, each R1 is a radical derived from benzene or a saturated aliphatic hydrocarbon radical, to 2 adjacent carbon atoms of which the anhydride radical is attached, and n is an integer from 2 to the maximum number of [A-COR1CO.O.CO] radicals capable of being attached to R; the polyanhydrides providing 0.25 to 0.85 anhydride equivalents per epoxide equivalent. Polyanhydrides used in the examples to cure commercial epoxy resins ar pentaerythritol tetrabistrimellitate anhydride; trimethylolethane tristrimellitate anhydride; glyceryl tristrimellitate anhydride; diphenylsilyl bistrimellitate anhydride; bisphenol A bistrimellitate anhydride; ethylene glycol bistrimellitate anhydride; hydroquinone bistrimellitate anhydride; hydroquinone bistricanhallylic anhydride; ethylenediamine bistrimellitamide anhydride; and p-phenylene bistrimellitamide anhydride.  The compositions may be dissolved in organic solvents or may be pulverulent and are useful as coating compositions and casting resins.ALSO:Structures are coated with compositions comprising an epoxy resin and as a curing agent therefor a polyanhydride of the formula <FORM:1034873/B1-B2/1> where R is an unsubstituted, aromatic or saturated aliphatic hydrocarbon radical, an organosilicon radical, or a divalent metal atom, each A is -O-or -NH-, each R1 is a radical derived from benzene or a saturated aliphatic hydrocarbon radical to 2 adjacent carbon atoms of which the anhydride radical is attached, and n is an integer of at least 2; the amount of polyanhydride providing 0. 25-0. 85 anhydride equivalents per epoxide equivalents.  In an example (3) a pulverulent composition of a commercial epoxy resin and opentaerythritol tetrahistrimellitate anhydride was (a) dissolved in acetone and used to cast a film on a glass plate, which film after the evaporation of the solvent was cured at 165 DEG C., and (b) applied as a fluidized bed to a rectangular steel bar preheated to 220 DEG C.
Patent GB-327628-A (GB)
Title: An improved collapsible splint
IPC: A61F5/058
Filed: 1929-05-28
Abstract: 327,628. Clark, J. May 28, 1929. Splints. - A collapsable splint comprises a plurality of sections slidably mounted upon an articulated frame in such a way that longitudinal movement of the sections relative to the frame in one direction serves to lock them in an extended position, and such movement in the opposite direction serves to free the joints whereby the sections may be folded upon each other. Splint sections a are attached to the longitudinal side members of the articulated frame joints comprising strips of metal c attached to the ends of the frame sections by pivot pins d. Flexible strips g, b limit the relative longitudinal movement of the sections a to the amount necessary to free the frame joints and permit folding. Holes i are provided to secure the usual straps or bandages.