baber/WOPTO huggingface dataset:
Patent GB-694051-A (GB)
Title: Electrical translating devices employing semiconductive bodies
IPC: H01L29/00
Filed: 1950-08-15
Abstract: 694,051. Semi-conductor amplifiers. WESTERN ELECTRIC CO., Inc. Aug. 15, 1950 [Aug. 17, 1949], No. 20226/50. Class 40 (iv). [Also in Groups XXXVI and XL (c)] An electric signal translating device comprises a body of semi-conductor material having at least one point contact on one portion of the body forming a first signal translating unit, and a pair of point contacts on another portion of the body forming a second signal translating unit. The arrangement may provide the combination of a detector with an associated radio or audio frequency amplifier, or a two-stage amplifier in cascade or push-pull relationship. Fig. 5 shows a wafer of semi-conductor, the surface 12B of which is engaged by two phosphor bronze point contacts 17 which, with the metallic electrode 11 which is soldered to the edge of the semi-conductor wafer, form a transistor amplifier. The other surface 12A of the wafer is engaged by the two contacts 22 at a position remote from the contacts 17, the contacts 22 and ring electrode 11 forming a second transistor amplifier. The whole is enclosed in a metallic housing 10. In place of the contacts 22, a single tungsten point contact may be used to provide a detector unit. The lead in conductors 15, 16, 20, 21 may be supported in the housing by insulating blocks composed of polystyrene or a resin compound. If the semi-conductor body has a grain boundary 23 as shown in Fig. 5, the collector and emitter electrodes of each pair of contacts are placed on opposite sides of the boundary to provide low positive feed-back impedance. Fig. 6 shows a circuit arrangement in which a radio or intermediate frequency is amplified by the amplifier section comprising electrodes 17 and 11, and detection is then effected by the single point contact co-operating with ring electrode 11. A further spaced contact may be provided on the device to form a push-pull detector stage. Specifications 694,021 and 694,041 are referred to.
Patent GB-1164841-A (GB)
Title: Improvements in Thyristor Circuits
Inventor: JOHANSON-BROWN MICHAEL JOHN
IPC: H02M1/092
Filed: 1966-05-06
Abstract: 1,164,841. Rectifying. ENGLISH ELECTRIC CO. Ltd. 4 May, 1967 [6 May, 1966], No. 20280/66. Heading H2F. [Also in Division H3] In a thyristor circuit including a string of series-connected thyristors 3, a number of pulse transformers 8, 9 and 10 are connected in cascade, each transformer being inductively coupled to a group of thyristors of the string, such that a control means connected to the primary 10A of one of the transformers 10 causes substantially simultaneous firing of the thyristors. The string of thyristors may form a H.V.D.C. converter and can be controlled from a pulse generator 14 which is at earth potential and drives a light source 15. A photo-cell 17 and pulse amplifier 18 at a higher potential transfer the triggering pulses to the pulse transformers which may have ferrite cores. An additional transformer may be connected between the triggering winding of each transformer and gate-cathode circuit of a respective thyristor. The power supply for the pulse amplifier 18 may be obtained from an R.C. grading network 6, 7 connected to equalize the voltage across each of the thyristors. A string of series-connected thyristors may be divided in half (Fig. 2, not shown), each half (20, 21) having cascade connected firing transformers as in Fig. 1 and the primaries of the first firing transformers being connected via a transformer (19) to the pulse amplifier 18. In this circuit the power supply of the pulse amplifier is obtained from across the string via a transformer (25) and bridge rectifier (26). The photo-cell firing arrangement in Fig. 1 may be replaced by a light-sensitive thyristor, a single pulse transformer with full primary-secondary insulation or a chain of transformers having progressively smaller degrees of insulation to ground. Each thyristor may be replaced by a number of thyristors in parallel supplied from the same secondary winding or from an auxiliary winding on an isolating transformer, the primary of which is fed from an auxiliary secondary winding on the main pulse transformer 8, 9, 10.
Patent GB-391341-A (GB)
Title: Improvement for wall structure
IPC: E04B1/68
Filed: 1932-07-18
Abstract: 391,341. W a ll s . SEALED JOINT CONSTRUCTION CORPORATION, 178, East 85th Street, New York, U.S.A.- (Assignees of Keuls, H. P. C. ; 178, East 85th Street, New York, U.S.A.) July 18, 1932, No. 20310. Convention date, July 25, 1931. [Classes 20 (iv) and 87 (i).] A wall comprises courses 1 of building- blocks 2 with vertical and horizontal joints which are sealed by means of strips 7 of angular form seated in V-shaped grooves 5 in the blocks. The strips extend beyond the blocks with which they are mainly associated so that they overlap adjacent strips.
Patent GB-1113360-A (GB)
Title: Process for stabilising biscyclopentadienyl resins against oxidation
IPC: C08K5/3437
Filed: 1967-05-02
Abstract: Uncured and cured biscyclopentadienyl resins are stabilized against oxidation by incorporating poly-2,2,4-trimethyl-1,2-dihydroquinoline. The resins may be of formula <FORM:1113360/C3/1> where R is an aliphatic, cycloaliphatic, araliphatic hydrocarbon or silicon-organic residue and p is the degree of oligomerization, usually less than 10. The resins may be cured by reacting with polyunsaturated philodienes, particularly maleic and fumaric polyesters, glycerides of unsaturated fatty acids and butadiene/styrene copolymers.  Specified resins are biscyclopentadienyl methane, biscyclopentadienyl phenylmethane, 1,3-biscyclopentadienyl propane, 1,5-biscyclopentadienyl pentane, 1,6-biscyclopentadienyl hexane, 1,9-biscyclopentadienyl nonane, 1,4-biscyclopentadienyl butene-2, a ,a 1 - biscyclopentadienyl - p - xylene, 4,6-biscyclopentadienylmethyl - 1,3 - dimethyl benzene, 1,3 - biscyclopentadienylmethyl - 2,4,6-trimethylbenzene, 1,4 - biscyclopentadienylcyclopentene - 2, dicyclopentadienyl dimethylsilane, bismethylcyclopentadienyl - dimethyl silane and dicyclopentadienyl diphenyl silane and oligomers and co-oligomers thereof.  In examples polymerized 2,2,4-trimethyl-1,2-dihydroquinoline is used to stabilize resins derived from butadiene/styrene copolymers and (1 and 3) dimeric 1,4-biscyclopentadienyltrans-butene-2 and (2) oligomeric 1,6-biscyclopentadienyl hexane.ALSO:Biscyclopentadienyl resins of formula <PICT:1113360/C4-C5/1> where R is an aliphatic, cycloaliphatic or araliphatic hydrocarbon residue and p is the degree of oligomerization, usually less than 10, may be stabilized against oxidation with poly-2,2,4 - trimethyl - 1,2 - dihydroquinoline. Specified resins are biscyclopentadienyl methane, biscyclopentadienyl phenylmethane, 1,3-bis-cyclopentadienyl propane, 1, 5 - bis-cyclopentadienyl pentane, 1,6-biscyclopentadienyl hexane, 1,9-biscyclopentadienyl nonane, 1,4 - biscyclopentadienyl butene-2, a ,a 1-biscyclopentadienyl - p - xylene, 4,6 - biscyclopentadienyl - 1,3 - dimethylbenzene, 1,3 - biscyclopentadienyl - 2,4,6 - trimethylbenzene and 1,4 - biscyclopentadienyl cyclopentene -2, and oligomers and cooligomers thereof.
Patent GB-839745-A (GB)
Title: Improvements in or relating to pipe joints
Inventor: RATTLIDGE FRANK EDWIN
IPC: F16L47/20
Filed: 1955-12-20
Abstract: 839,745. Pipe joints. EVERED & CO. Ltd. July 2, 1956 [Dec. 20, 1955], No. 20372/56. Divided out of 839,743. Class 99(1). In joint forming means comprising inner and outer sleeves 10, 12 assembled concentrically to define an annular passageway for receiving a pipe 18 of thermoplastic material, and wherein, to determine the axial location of the pipe, the end of the pipe engages a formation in the passageway, and a heat-storage portion 16 forming part of the outer sleeve 12 lies in a circumferentially extending zone situated at the place where the material of the pipe is required to be rendered fluent to make the joint, the outer sleeve has disposed in contact therewith a material, such as " Thermindex " (Registered Trade Mark), which undergoes a change in appearance on attainment of a predetermined temperature to which the sleeve is required to be heated to make the joint. Specification 839,744 also is referred to.
Patent GB-936693-A (GB)
Title: Improvements relating to the blending of materials
Inventor: JISKOOT JACOB JOOST
IPC: G05D11/13
Filed: 1961-06-06
Abstract: 936,693. Automatic control of volume. J. J. JISKOOT. June 5, 1962 [June 6, 1961], No. 20419/61. Class 38 (4). [Also in Group XIX] In a blending control system a pulse generator is driven at a reference flow rate and provides at a plurality of output channels pulse trains of different mean frequencies corresponding to different proportions of the reference flow rate and at least one flow controller is connected to one or a group of output channels to control the flow of a component to be blended by comparing the mean frequency of the pulses representing the actual flow with the selected pulses. As shown, a control panel has three controllers 10, 12 and 14 for component materials of a blend. Each controller receives pulses from a master pulser 16 which is a slave of a meter 18 in a line 20 leading to a blending manifold or of a manually adjustable blend-rate oscillator 24. The total flow of blend is derived from a counter 26. The master pulser comprises an electric motor driving a plurality of tone wheel generator, each of which is connected to an output channel, or alternatively the master pulser comprises cyclically-counting binary decade counters (see Group XIX), the output channel being connected to the appropriate sides of the flip-flops which form the counters. Each controller has a " set-percentage " switch 28 for selecting appropriate channels from the master pulser. The pulses in the selected channels are fed to a differential counter 30 which receives its other input from a flow-meter 32 in the corresponding component flow-line. The differential counter provides a control current, via a digital to analogue converter 34, which is fed to an electro-pneumatic transducer 36. The transducer 36 through an air-pressure control 38 determines the operation of a diaphragm motor 40 positioning a control valve 42 in the flow-line. Each controller provides automatic closed loop control of the flow rate in the associated flow-line in dependence on the setting of the switches 28. When the master pulser 16 is. controlled by the blend-rate oscillator 24 the percentage blend of component materials A, B, C is maintained constant and when the master pulser is controlled by the meter 18 the flows of component materials A, B, C are maintained as percentages of the flow in the line 20.
Patent GB-892131-A (GB)
Title: Flame-proofing process
IPC: D06M13/487
Filed: 1958-06-25
Abstract: Phosphorus compounds of the formula <FORM:0892131/IV (b)/1> wherein X is oxygen or sulphur and Y is a substituted or unsubstituted hydrocarbon radical which is linked with the P atom either directly or via an oxygen bridge, or is a radical -NR1R2, R1 an R2 being the same or different hydrocarbon radicals having not more than 3 carbon atoms and which may be substituted, e.g. by halogen atoms, hydroxyl or amine groups, and which are used as flame-proofing agents for inflammable materials (see Group VIII) are obtained by reacting ethylene imine with phosphorus compounds of the general formula (Hal)2P(X)Y wherein X and Y are as defined above and Hal is halogen. Detailed examples are given for the production of N-dimethylamido phosphoric acid diethyleneimide, chloremethane phosphonic acid diethyleneimide, phosphoric acid ethyl ester diethyleneimide, and N-diethylamido thiophosphoric acid diethyleneimide.  Specification 830,800 is referred to.  Reference has been directed by the Comptroller to Specification 729,586.
Patent GB-835385-A (GB)
Title: Antiperspirant compounds
Filed: 1958-06-25
Abstract: 835,385. Antiperspirant compositions. HEDLEY & CO. Ltd., T. June 25, 1958 [June 25, 1957], No. 20450/58. Class 81(1). An aqueous antiperspirant comprises: (1) zirconyl hydroxy chloride of empirical formula ZrOOHCl, and (2) an aluminium chlorhydroxide complex of general empirical formula Al 2 (OH) 6-n Cl n , where n has an average value of about 0.8 to 1.2, for example, Al 2 (OH) 5 Cl xH 2 O where x is about 2, and the molar ratio of (2) to (1) is between 0.5 : 1 and 3 :1. If required to prevent gelling, a water-soluble amino acid (3), having equal numbers of amino and carboxyl groups in the molecule may be added. Specified amino acids are glycine, dl-valine, #-alanine, dl-methionine, dl-tryptophane, dl-#-phenyl-alanine. Bacteriostatic, germicidal and/or deoderizing agents, e.g. hexachlorophene or quaternary ammonium salts such as p-diiso-butyl phenoxy ethoxy ethyl dimethyl benzyl ammonium chloride monohydrate may be optionally added. The total concentration of constituents (1) and (2) on an anhydrous basis may be from 5 to 30%, preferably 8 to 20% by weight of the composition and that of (3) being from 0 to 17.5%, the proportions of (1), (2) and (3) being so related that the composition may be represented as being within the shaded portion of the graph. Examples of compositions given are (a) a cream comprising 5% by weight of (1), 7.5% of (2), 2% of (3), 59.1% water, 10% glyceryl monostearate, spermaceti wax, mineral oil, polyoxyethylene 50 stearate, glycerine, TiO 2  and perfume; (b) a lotion comprising the same amounts of (1), (2) and (3) with 75.8% water, 2% glyceryl monostearate, spermaceti wax, mineral oil, polyoxyethylene 100 stearate, glycerine, veegum and perfume ; and (c) a liquid comprising the same amounts of (1), (2) and (3), 81.3% water, " Tween 80 " (Registered Trade Mark)," ethanol and perfume. Specification 770,008 is referred to.
Patent GB-224589-A (GB)
Title: Improvements in the landing apparatus of air-craft
IPC: B64C25/66
Filed: 1923-08-11
Abstract: 224,589. Adamczik, M. Aug. 11, 1923. Land wheels and skids; floats, arrangement of. -Landing wheels 7, Fig. 1, and skids 1 are carried by pendulating arms 3 suspended from an axle 14 on an aircraft. Several wheels with endless tracks may be used if desired. Or a pair of wheels 7 is mounted on a double armed rocking lever 6, the fulcrum 5 of which is slidably arranged in vertical slots 3<11> in the pendulating arms, and is connected by a shock-absorbing spring coil 5<1> to a pin 4 fixed to the pendulating arms. The pendulating arms themselves may be similarly connected to the axle 14 by means of slots 3<12>, Fig. 6, and a shock-absorbing spring coil 13. The oscillations of the pendulating arms may be limited by spring buffers 11, 11<1>, Fig. 5, arranged between stops 12 on the pendulating arms and the end 9<1> of an arm 9 fixed to the axle 14. The skids and the landing wheels may be enclosed in a casing 2 to reduce air resistance. Air chambers may be provided to convert the device into a float for landing on water.
Patent GB-1530562-A (GB)
Title: Magnetic tower scavenging system
IPC: G03G19/00
Filed: 1977-05-17
Abstract: 1530562 Recovering magnetic toner XEROX CORP 17 May 1977 [26 May 1976] 20685/77 Heading B2L In development of magnetic images on carrier 1 by contact with magnetic toner at 16, excess or air borne toner 18 is removed from the vicinity of carrier 1 by the attraction of magnet 4, is removed from the field of magnet 4 by rotating surface 5, and is subjected, by magnet 10, to a magnetic field alternating in magnetic polarity, and is removed from the field of magnet 10 by rotating surface 12. The alternating field demagnetises the toner and thus reduces its tendency to agglomerate; the field may be produced by windings 11 connected via 13, 14, to an A.C. source 15, or else a switched D.C. source may be used (Fig. 2, not shown).
Patent GB-405611-A (GB)
Title: Electric heating elements and machine and process for producing same
IPC: H05B3/30
Filed: 1932-07-22
Abstract: 405,611. Electric hot - plates &c. SMITH, J. E., 95th Avenue, Belleville, Illinois, U.S.A. July 22, 1932, No. 20699. [Class 39 (iii).] A heating-element consisting of a coiled resistance wire located in a mass of material having electrical insulating but heat conducting properties is formed by simultaneously extruding the coiled wire and the insulating material, when the latter is in the plastic state, and forcing the turns of the coil apart during the extrusion of the plastic material, so that this is forced into the space between the turns. The coated coiled wire is then fashioned into the desired form and dried to set the formed unit. The plastic material may be an argillaceous material or may consist of aluminium or magnesium oxide with a binder such as vegetable gum or lignin. The coiled resistance wire 14, Fig. 1, is fed through a guide tube 20 into a hopper 10 containing the plastic material 12. Pressure is applied, for example by means of compressed air or a piston and cylinder, to the material 12, which causes the coils of the resistance wire 14 to be spread apart and coated with the material to a thickness determined by a nozzle 18 through which the coated resistance wire is extruded. The extruded resistance unit may be wound into any desired form, for example, as shown in Fig. 3 applied to an iron, three turns of the coated resistance wire 14 are coiled within a casing 24 having sloping sides 24b and an open bottom so that the unit is pressed directly against the sole plate 26. In a modification, a single or double turn of the resistance unit is similarly held in contact with the surface of a waffle iron. For a waterproof heating element, for example for use on the top of an electric stove, the coated resistance is coiled into a flat spiral, built up with additional plastic material, moulded into the form of a ribbed disc, coated with vitreous or porcelain enamel, and baked. In a further construction the coated resistance wire is extruded directly into a tubular casing much as a copper or steel tube, which may be bent into any form before the unit is cured and baked. Such a tube may, for instance, be brazed or welded through the wall of a tank &c. The unit may be coiled and held at spaced points, for instance by a spider.
Patent GB-944034-A (GB)
Title: Improvements in or relating to internal combustion engines
Inventor: TYRREL REGINALD ALFRED
IPC: F16J10/04
Filed: 1959-06-17
Abstract: 944,034. Cylinders. WELLWORTHY Ltd. June 17, 1960 [June 7, 1959], No. 20811/59. Heading F1B. Retention of a steel or cast iron liner 1 forced as an interference fit into a heated or unheated aluminium or other light metal cylinder barrel or block 6 is ensured by a tapered liner projection 2 engaging a barrel recess 9. The liner has a groove 10 adjacent the projection 2, which projection may be continuous or in several sections.
Patent GB-500933-A (GB)
Title: An improved mop
IPC: A47L13/142
Filed: 1938-07-14
Abstract: 500,933. Mops &c. LLOYD, G. M. July 14, 1938, No. 20866. [Class 19] A mop comprises an arched frame, Fig. 1, with members 10, 11 bent inwards at 16 to engage a ferrule 14 on a handle 15. The outer ends of the frame are also bent downwards and spaced by distance pieces 12, 13 secured by pins 21. The parts 10, 11 may be sprung from the distance pieces so as to insert a swab 20 which is endless and passed through a ring 19 secured - to a spring hook 18 on the handle. The swab may be wrung by detaching the ring 19 from the hook 18 to another hook 22, Fig. 3, on a pail. In a modification, one set of the members 10, 11 are spaced apart by an additional hinged latch member.
Patent GB-154325-A (GB)
Title: Improvements relating to printing cylinders
IPC: B41F27/10
Filed: 1919-08-25
Abstract: 154,325. Terrey, A., and Smith, J. H. W. Aug. 25, 1919. Printing-surfaces.-A cylinder, of the kind adapted to be expanded or contracted to retain or release an intaglio or other printing shell, is divided longitudinally by a single slit along its whole length, and is formed with a double conical bore decreasing in diameter towards the middle of the cylinder for engagement with longitudinally adjustable conical sleeves, by which the cylinder may be expanded. The cylinder a, split at a<1> and coned internally as shown, is supported at the ends on heads b having bosses c threading in the conical sleeves d which are keyed to the spindle g. Pins i may be provided on the sleeves d engaging slots i in the cylinder a to prevent the latter rotating. Holes c are provided on the heads b to receive a tool for rotating them, and the heads may be held against backward rotation after the split cylinder a has been expanded within the printing shell by suitable means, such as a pawl h pivoted on the outer face of the head b engaging with a ratchet-wheel f secured on the spindle g.
Patent GB-1512489-A (GB)
Title: Isostatic moulding apparatus
IPC: B30B11/00
Filed: 1976-05-20
Abstract: 1512489 Ejecting from isostatic moulding mandrel OLIN ENERGY SYSTEMS LTD 20 May 1976 20934/76 Addition to 1383395 Heading B5A An isostatic moulding apparatus comprising a mandrel assembly of a mandrel 28 projecting from a sleeve 29 surrounded by a tubular housing 30, is vertically reciprocable towards and away from a mould, respectively to effect insertion of the mandrel into the mould and closing of the mould by the sleeve 29, and then to effect opening of the mould and removal of the article from the mandrel by continued movement of the mandrel 28 and sleeve 29 away from the mould, as movement of the housing 30 is halted. Prior to halting movement of the housing 30, the mandrel 28 and sleeve 29 may be rotated relative thereto, with rotation of the article being restrained by its engagement with a roughened end of the housing 30. In the embodiment, a machine frame 2, 3, 4, 5 supports, at a fixed cross member 6 of a fixed pedestal 7, columns 8, 9 on which are vertically slidable a lower bolster 10 containing a plurality e.g. six, of the moulds provided with filling caps 43, and an upper bolster 16 carrying the same number of mandrel assemblies and which is vertically reciprocable by a hydraulic piston and cylinder 18. The continued movement of the mandrel 28 and sleeve 29 away from the mould, is effected by the bolster 16 comprising upper and lower separable parts 21, 31, respectively carrying the mandrel and sleeve 28, 29, and the housing 30, the upper part 21 being moved by the piston and cylinder 18 and carrying the lower part 31 under the loading of compressed air spring means 32, 33, 34, against which the continued movement of the upper part 21 is effected upon halting of the lower part 31 by abutment against adjustable stops 19, 20. The rotation of the mandrel 28 and sleeve 29 relative to the housing 30 is effected by the upper bolster part 21 carrying the mandrel 28 and sleeve 29 at a journal 24, from which a lateral extension pivotally engages a shaft which is axially displaced by a cam track to effect the rotation. The isostatic pressure within the moulds is developed by a pressure intensifier 15, Fig. 1 comprising a hydraulic cylinder 51 carried by the fixed pedestal 7 and in which fluid is pressurised by a piston 50, Fig. 6 carried by the bolster 10, and conveyed to the moulds through a bore 52 in the piston 15, as the bolster 10 is downwardly displaced upon abutment of the housing 30 with the bolster 10. The bolster 10 is attached by rods 11, 12 to a cross piece 13, which bears against an air spring 14 for returning the bolster 10 to an upward location, limited by abutment of the cross-piece 13 against the member 6 fixed to the pedestal 7. An air bleed system for the moulds, comprises a ball bleed valve 58 for each mould in the bolster 10, and a hydraulic reservoir 57 connected to the cylinder 51, via a pipe 55 and a valve 56 which is opened with the bolster 10 in its uppermost position and with the bleed valves 58 opened until air is purged under the head of the reservoir 57.