baber/WOPTO huggingface dataset:
Patent GB-1362817-A (GB)
Title: Insulated gate field effect transistor adapted for microwave applications
IPC: H01L29/00
Filed: 1971-11-01
Abstract: 1362817 IGFET HUGHES AIRCRAFT CO 1 Nov 1971 [2 Nov 1970] 50583/71 Heading H1K An IGFET for switching microwaves comprises a semi-conductor substrate, with a doped region in one of its major surfaces bounding a channel region, an insulating layer and overlying resistive layer (e.g. having a resistivity in excess of 1,000 ohms/square) disposed over the channel region and partially overlapping the doped region, a pair of spaced electrodes located over the channel region in contact with the resistive gate layer, and an electrode in ohmic contact with the doped region. The device shown in Fig. 4 is made by first etching a U- shaped slot in a silica film pyrolytically deposited on a substantially intrinsic silicon substrate to form an ion-implantation mask and optionally a corresponding shallow grove in the silicon to provide a visual reference for mask alignment. After bombardment with phosphorus ions at 40 C. to form N + region 32 the mask is removed and a layer 16 of oxide grown on the surface and covered with successive deposits of silicon nitride 18 and polycrystalline silicon 20, the latter doped with boron during deposition to a resistivity of IK# to several M#/sq. After etching the layers to the form shown molybdenum or chromium is deposited and patternetched to form interdigitated source and drain electrodes 22, 24 and silica or silicon nitride deposited and etched back to leave area 30. Finally aluminium or gold is deposited and pattern etched to form source contact 28 and contact 26 which is capacitively coupled to the drain electrode and has an extension 26b contacting N+ region 32. Alternative materials are germanium or gallium arsenide for the substrate and germanium and metals for the polycrystalline layer. In operation a source of microwave voltage connected in series with a load between the source contact and contact 26 is switched by a parallel connected lower frequency signal source. Alternatively the device is modified by eliminating the connection between sections 26a and 26c of electrode 26 so that the signal source can be connected between the drain contact 26 and the U-shaped N+ region.
Patent GB-1217546-A (GB)
Title: New phthalocyanine dyestuffs and processes for the manufacture thereof
IPC: C09B62/006
Filed: 1968-10-24
Abstract: 1,217,546. Phthalocyanine dyestuffs. CIBA Ltd. 24 Oct., 1968 [24 Oct., 1967; 9 Sept., 1968], No. 50601/68. Heading C4P. Novel phthalocyanine dyestuffs of the formula (in which Q is the radical of a phthalocyanine, n is a number between 1 and 2 inclusive, R is an optionally substituted phenylene radical, X is a fibre-reactive group, and Y is a CH3, CO 2  alkyl or CO 2 H group) are prepared (1) by N-acylation with an acylating agent yielding the group X; or (2) by condensing a sulphochloride Q-(-S0 2 Cl) n  with an appropriate amine; or (3) by coupling a diazo compound of an amine of the formula Q-(-SO 2 NH-R-NH 2 ) n  with an appropriate coupling component. The starting materials for (1) and (2) are prepared similarly by coupling, the coupling components in (2) being in turn prepared by N-acylation as in (1), and the starting materials for (3) are prepared by condensing phthalocyanine sulphochlorides with diaminobenzenes H 2 NRNH 2  that may be mono-acetylated and, if necessary, subsequently splitting off the acetyl group. X may be introduced in two stages, e.g. by reaction with a 2,4,6-trihalogeno- 1 ,3,5-triazine such as cyanuric chloride and then replacement of a halogen atom in the dihalogeno triazine radical, for example by reaction with metanilic acid. Preferred dyestuffs have the formula where Pc is the radical of a metal-free phthalocyanine or of a phthalocyanine containing Co, Cu or Ni, m is 1 or 2, W 1 , W 2  and W 3  are each OH or substituted or unsubstituted NH 2  and p, q and r are each a number between zero and 3, their sum being at least 1 and the sum p+q+r+n being between 3 and 4 inclusive. Phthalocyanine sulphohalide starting materials are prepared by standard methods, and are reacted with the appropriate mono-acylated diamino benzenes, and the sulphohalide groups that do not participate in the reaction are hydrolysed, either simultaneously or subsequently, or reacted with ammonia or an aliphatic or aromatic amine, and the products are subsequently saponified, diazotized and coupled. An extensive list of fibre-reactive groups and acylating agents containing them is provided. They may be interconverted in the products, e.g. a #-chloropropionyl radical may be converted to an acryloyl radical. The novel dyestuffs are suitable for dyeing a wide variety of materials, for example silk, wool and polyamide fibres and especially polyhydroxylated materials of fibrous structure, man-made and natural; brilliant green and bluish shades are obtained.
Patent GB-1135512-A (GB)
Title: Anti-backlash carriage feed mechanism
IPC: B23Q5/38
Filed: 1966-11-16
Abstract: 1,135,512. Toothed gearing; hydraulic drive transmission. J. BINNS. 16 Nov., 1966 [21 July, 1966], No. 51264/66. Headings F2C and F2Q. [Also in Division B3] To eliminate backlash from a saddle or carriage feed mechanism for a machine tool such as a lathe, including a fixed rack 8 meshed by two spaced apart pinions A, B rotatably mounted on the carriage 16 and connected by separate gear trains 36, 38, 40 and 42, 44, 46 to oppositely handed helical gears 34, 32 secured on an axially floating drive shaft 30, an axial force proportional to the torque loading on the mechanism is applied to the shaft 30 by an hydraulic ram 60. This tends to rotate the pinions A, B in opposite senses to take up backlash. The shaft 30 is driven through gears 26, 28 by a reversible hydraulic motor 22 connected by lines 84, 86, a stop valve 102, and lines 106, 104 to a variable displacement pump 94 driven by an electric motor 96. Lines 76, 78 branching from the lines 84, 86 supply the twin piston single-acting ram 60 with fluid at drive circuit pressures, the latter being proportional to the torque load on the gearing. A control unit 100 monitors motor 22 speed or position. Pressure relief valves 122, 124, 126, 128 give overload protection for the gearing and hydraulic system. A variable displacement pump 110 driven by an electric motor 114 pressurizes and tops up the main hydraulic drive circuit via a restrictor 116, a heat exchanger 112 and a line 134, and also provides servo pressure to the stop valve 102 and to the displacement control 136 of the pump 94, and counterpressure, through a line 138, to the ram 60.
Patent GB-1076610-A (GB)
Title: Reductive coupling of cyanodienes
IPC: C25B3/29
Filed: 1964-12-22
Abstract: Cyano 1:3 dienes e.g. cyano-butadiene are hydrodimerised electrolytically by treating a solution thereof preferably using as conducting salt a quaternary ammonium compound.  Inhibitors e.g. quinone, catechol, may be added to suppress side reactions producing polymers and the pH should be maintained in the range 3 - 12, preferably 6-9.5.  The reaction may be performed in a divided cell using a porous membrane, or preferably an ion exchange membrane, to separate the anolyte and catholyte. Desirably a cathode is employed that has a hydrogen overvoltage at least as great as that of copper.
Patent GB-1158993-A (GB)
Title: Ethylene Polymerisation Process and Catalyst therefor.
IPC: C08F10/00
Filed: 1966-11-21
Abstract: 1,158,993. Polymerisation catalysts. PHILLIPS PETROLEUM CO. 21 Nov., 1966 [22 Nov., 1965], No. 52068/66. Heading B1E. [Also in Division C3] Polymerisation catalysts comprise (1) chromium oxide at least part of which is hexavalent, (2) SiO 2 , ZrO 2 , ThO 2  or any mixture thereof and (3) from 0-1-8% of NH 4 BF 4  or a fluoroborate or fluorosilicate of any metal other than an alkali or alkaline earth metal. Comparative examples describe polymerisation processes in the presence of copper fluorosilicate, ammonium fluoroborate or copper fluoroborate supported on SiO 2 ,-Al 2 O 3 .
Patent GB-1021079-A (GB)
Title: Improvements in apparatus for simultaneously marking the corresponding positions of buttons and button-holes on superimposed pieces of fabric
IPC: D05B35/12
Filed: 1964-12-22
Abstract: 1,021,079. Sewing. W. MAIER, O. MAIER and E. MAIER [trading as WILHELM MAIER & SOHNE O. H. G. and WILHELM MAIER & SOHNE UNITASMASCHINFABRIK O. H. G.] Dec. 22, 1964 [June 23, 1964], No. 52151/64. Heading D1G, Apparatus for simultaneous marking of sewing positions on fabric comprises a lower fixed fabricsupporting plate, an upper movable pressure plate, and lower and upper elements which are inserted between the plates for applying markings on the fabric, the lower elements being mounted on arms disposed beneath the lower plate, the upper elements being mounted on arms engaging the upper plate, and each pair of co-operating arms comprising a structural unit which is exchangeable for another unit and is shiftable relatively to the other units. As shown, the apparatus comprises a fired base 1, a fired fabric-supporting plate 2, an upper presser plate 4 carried by a structure pivoted at 3 to base 1, and a series of marking units 5 movable on base 1. Each marking unit comprises a plate 10 slidable in guides 9 on base 1 and provided with a marking pin 11. A lower arm 8, fixed to plate 10 and disposed beneath plate 2, is pivoted at 15 to an upper arm 6 carrying a socket member 12 adapted to co-operate with pin 11. Arm 6 is spring- biased upwards to engage the base of socket 12 with plate 4. Members 11 and 12 are heated by contact with heated guides 9 and plate 4 respectively. A plate 7, also pivoted at 15, is spring- biased downwards to abut an adjustable nut 19 on a stud 18 carried by arm 6. An adjustable fabric stop plate 21 is provided on plate 2. Plates 10 are interconnected by a lazy-tongs device 22 for adjusting the spacing therebetween. In use, plate 4 is lowered to engage the sockets 12 with the pins 11, the fabric on plate 2 being clamped by the downturned serrated edge 24 of plate 7.
Patent GB-1164675-A (GB)
Title: Electronic Display System
IPC: G09G3/10
Filed: 1967-11-21
Abstract: 1,164,675. Numerical displays: electric digital data storage. HITACHI Ltd. 21 Nov., 1967 [2 Dec., 1966], No. 52937/67. Headings G4C and G4H. A numerical display system comprises a plurality of multi-cathode indicator tubes T1-Tn the cathodes being formed in the shapes of numerals and glowing when energized, corresponding cathodes being connected together, one of the leads being selected by switching means in accordance with information to be displayed and means for switching operating potential to the anodes in succession in synchronism with the selection of the cathode leads. Decimal digits in binary form are entered from a unit K, which may be a serial-type adder, into a shift register Rt. The last four stages Rd of the register are passed by gates Go and stores Mo. The outputs are applied to decoder Do so that according to the binary digits in the store one of the digit leads 0-9 is marked and the corresponding output of driving circuits Co is energized. Digits are stepped through the register by clock pulses Cpo and after each four such pulses the gates Go are enabled by clock pulses tpo. The indicator tube on which the digit is to be displayed is selected by a switch S, which may be electronic. The switch S steps to the next position after each digit has been displayed. A feedback loop 41 re-enters the digits in the register R and the circuit recycles so that each digit is rapidly and repeatedly displayed to give the appearance of a steady indication. Shift register.-The Shift register R is composed of insulated gate-type field-effect transis tors each stage having six transistors M4-M9, Fig. 6. The bit is stored by the capacitance C of the inverted transistors M7 and M4 and the bit is shifted by staggered clock pulses CP1, CP2 applied to gating transistors M9 and M6. The last four bits, representing a decimal digit are gated out by transistor gates M30-M33 enabled by timing pulse tpo. The bit signals are inverted and applied in true and complementary form to the inputs of ten Nand gates connected to respond to the ten combinations which represent the ten decimal digits.
Patent GB-1454381-A (GB)
Title: Nozzle for spraying liquids
IPC: B05B1/34
Filed: 1973-11-14
Abstract: 1454381 Sprayproducers LBCHLER APPARATEBAU KG 14 Nov 1973 [18 Nov 1972] 52940/73 Heading B2F A liquid spraying nozzle comprises a nozzle housing 10, Fig. 1, having a generally frustoconical outlet bore 13 and containing a member 15 secured in the housing and located directly behind the outlet bore 13 and having a plurality of straight channels 20, Fig. 3, the centre of each end of each whirl channel being spaced at the same radial distance from the central axis 21 of the nozzle, the axis of each channel being inclined with respect to said central axis by about 30‹. In the embodiment shown, three channels are provided, being staggered by 120‹ relative to one another. By turning member 15 the angle of the emerging cone of liquid can be varied between 45‹ and 60‹. The member 15, a whirl disc, is secured in the nozzle housing by a beading 18 or by a press fit.
Patent GB-1282764-A (GB)
Title: Imidazoline-2-thiones
Inventor: SANDSTROM JAN OLOF
IPC: C07D233/84
Filed: 1969-10-29
Abstract: 1282764 Imidazoline-thiones J O SANDSTROM and P G KJELLIN 29 Oct 1969 [29 Oct 1968] 53030/69 Heading C2C Novel compounds I where R<SP>1</SP> and R<SP>2</SP> are C 1  to C 4  alkyl, and A is phenyl optionally substituted by C 1  to C 4  alkyl and/or alkoxy, and/or halogen, NO 2  and/or amino, are made by interacting A.COCH 2 OH and R<SP>1</SP>NHCSNHR<SP>2</SP> in an alcoholic solvent at 100 to 200 C. Benzoyl carbinol is prepared by hydrolysing the ester, Ph.CO.CH 2 .O.CO.Me, which is itself obtained by treating acetophenone with bromine and potassium acetate. Pharmaceutical preparations suitable for treating viral infections and depression contain I as active ingredient; administration is orally or parenterally.
Patent GB-1526448-A (GB)
Title: Multilayer paper sheet filter cartridges
IPC: B01D29/07
Filed: 1975-12-31
Abstract: 1526448 Filter elements PALL CORP 31 Dec 1975 [6 Jan 1975] 53365/75 Heading BID [Also in Division D2]  A tubular filter element comprises two or more layers of paper, each 0.001 to 0.02 inches thick and of density 0.1 to 0.75 g/cc, arranged concentrically in order of decreasing pore size in the fluid flour direction (inwards or outwards) with inner and/or outer support layers, all the layers being corrugated together. The paper may comprise fibres of wood, cotton, hemp, Esparto or regenerated cellulose, but has no synthetic resin binder, though it may include a cellulosic binder (viscose or cellulose xanthate), and melamine-formaldehyde wet-strength resin may be included. The element may be generally cylindrical, frustoconical or polygonal in section and includes two end caps and possibly additional non- corrugated support tubes. The support layers may be wire mesh, extruded plastics netting, perforated plastics or jelled glass or plastics. In manufacture the preformed paper and support layers are corrugated together, then seamed to form a tube. Inner and/or outer support tubes may be added, possibly being heat-shrunk into place, and plastics end caps, preferably of the same material as the support tubes or layers, such as polyethylene or polypropylene are fitted by heat-bonding solvent-bonding or adhesive. A plurality of filter tubes may be bonded end to end by similar techniques applied to their abutting end caps. Several filter tubes are described in detail, their paper layers having pore sizes of 8-40 microns. The absence of non-cellulosic binder enables elements to be used for food products, medicine and blood.
Patent GB-1127789-A (GB)
Title: Improved method and apparatus for electrostatically spraying objects
Inventor: OESTERLE KURT MARTIN
IPC: B05B5/03
Filed: 1965-12-17
Abstract: 1,127,789. Spray-producers. GEMA AG. APPARATEBAU. 17 Dec., 1965. No. 53605/65. Heading B2F. An apparatus suitable for spraying a powder supplied in a stream of carrier gas by an insulating feed pipe 1 comprises a non- conduotive conduit 2 within which the powder is charged by friction, a funnel-shaped member 3 located at the outlet end of the conduit 2, a non-conductive cylindrical rotor 4 mounted around the members 2 and 3, and a baffle plate 7 situated between the member 3 and the outlet end of the rotor 4. The discharge may be adjusted to produce different coatings or to coat different objects by altering the moisture content of the powder or the vapour content of the carrier gas stream or by partially ionizing the gas stream. In addition the rotor may be rotated at different speeds to draw carrier gas off laterally, provided with extensions, or adjusted axially; the pipe 1 may be partially earthed, and semi-conductor devices may be located between earth and the conduit 2 or the pipe 1. The article to be coated is connected to a reference, e.g. earth, potential. The selfinduced charge may be supplemented by the use of a high alternating potential if the powder used quickly loses its charge. A screen in the form of a series of bars 6 is mounted on the exterior of the rotor and creates a rotating mass of air. The plate 7 is centrally apertured and may be moved out of the stream path.
Patent GB-1437705-A (GB)
Title: Supports for planetary coolers
IPC: F27B7/40
Filed: 1974-12-12
Abstract: 1437705 Planetary coolers for rotary kilns F L SMIDTH & CO AS 12 Dec 1974 53842/74 Heading F4B The planetary cooler tubes 2 of a rotary kiln 4 are supported, at the ends remote from the inlet ends, in a bearing comprising a slide ring 6 surrounding, and having a diameter larger than the cooler tube, and which in turn is received in a fixed cylindrical bearing 5 having a still larger diameter. Lubricant is fed by pipe 9 to the space between cylinder 5 and ring 6 when the tube 2 is in its lowermost position. Holes in the ring 6 allow the lubricant to pass into the space between the ring and the cooler tube. The axial movement of the ring 6 is limited by stops on the cooler tube. The lubricant, which is fed manually or automatically is worked round the slide ring by the rotation of the kiln.
Patent GB-1234752-A (GB)
Title: Rotary electrical machine having a brushless exciter
IPC: G01R31/34
Filed: 1967-06-05
Abstract: 1,234,752. Dynamoelectric machines; protective arrangements. BRUCE PEEBLES INDUSTRIES Ltd., and J. F. TONG. 22 Aug., 1968 [5 June, 1967], No. 54432/66. Headings H2A and H2K. In a rotary electrical machine, e.g. alternator, having a brushless exciter which includes on the stator a primary excitation winding 13 and on the rotor a multi-phase secondary winding 14 coupled through rectifiers 15 to the machine D.C. field winding 12, a detector winding 17 on the stator and in electrical quadrature with the primary winding 13 is coupled to the secondary winding 14 to respond to pulsating air-gap flux produced by unbalanced currents in the secondary winding phases. By this the winding detects a fault in the excitation circuit, in particular of the rectifiers, and may operate an alarm or a protective device. Each rectifier may have a fuse 16, both stator windings 13, 17 may be distributed, and individual phases of the secondary winding 14 alternatively may be directly in parallel. The voltage induced in winding 17 may be smoothed by a filter.
Patent GB-1250016-A (GB)
Title: Improvements in or relating to interstation synchronization system for time-division multiplex communication network
IPC: H04J3/06
Filed: 1968-11-18
Abstract: 1,250,016. Multiplex pulse signalling. NIPPON ELECTRIC CO. Ltd. 18 Nov., 1968 [17 Nov., 1967], No. 54511/68. Heading H4L. In an apparatus for synchronizing the clock frequency of a station in a time division multiplex communication system comprising a plurality of interconnected stations, synchronizing signals derived from the co-operating stations are supplied via terminals 28 to 31 respectively to phase comparators 32 to 35 where they are compared with the local clock signal from terminal 48. The outputs of the phase comparators are supplied to a circuit 40 which gives each input signal a predetermined weighting and then averages them. In a prior arrangement this averaged signal is supplied via a low pass filter 41 to control the clock oscillator 47 and the oscillator output is fed back to the phase comparators via a delay which is equal to the average inter-station delay time of links terminating at the station. In the present arrangement this delay circuit is dispensed with and the output of filter 41 is added at 43 to a reference voltage from a generator 44 which represents the average delay between the station and all the other stations connected thereto and the resulting voltage controls the oscillator 47. It is stated that setting of generator 44, Fig. 4, (not shown) may be obtained by calculation or measurement, or automatic control techniques may be used.
Patent GB-1129897-A (GB)
Title: Improvements in or relating to modulators for television transmitters with positive modulation
IPC: H04N5/40
Filed: 1965-12-23
Abstract: 1,129,897. Valve amplitude modulating circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 23 Dec., 1965 [29 Dec., 1964], No. 54566/65. Heading H3R. A modulator for a T.V. transmitter using positive modulation, of the type wherein a number n (e.g. 4) of modulating valves 10, Fig. 1, are connected in series with the cathode K of a light-house tetrode 1 to the control grid of which the carrier is supplied, is characterized in that the cathode K is connected through a resistance R to a potential source E. The resistance R is equal to and the potential E equals ni o R + VK o  where VK b  and V Ko  denote the potential of K for maximum and zero transmission power, <SP>i</SP>HFB is the cathode current of the tetrode 1, and i o  and i m  are the minimum and maximum currents through each modulating valve 10. In a particular example R is 300 ohms and E 160 volts. The provision of R and E gives the following advantages:- (a) Decrease of the apparent variation of input conductance of the tube 1. (b) A positive " gamma " which compensates for saturation of tube 1 at high powers. (c) A sufficient pass band for the edges of the synchronization pulses. (d) A defined cut-off potential for tube 1. (e) The tube 1 may be cut-off without requiring the tubes 10 to be cut-off.
Patent GB-1199929-A (GB)
Title: An Improvement in or relating to Rolling Mill Apparatus
Inventor: ALLBESON ERNEST NEEDHAM
IPC: B21B43/00
Filed: 1966-12-07
Abstract: 1,199,929. Rolling guides. BRIGHTSIDE FOUNDRY & ENG. CO. Ltd. 6 March, 1968 [7 Dec., 1966], No. 54851/66. Heading B3M. Rolled stock from a mill is fed from a vertically adjustable guide 60 and a twister 62, Fig. 5, to an inclined surface 14, Fig. 3, and is subsequently shifted from the surface to a cooling bed 10. To control the movement of the stock from the surface 14 a fence guide 12, Fig. 1, and stripping arms 22 are employed. The guide is formed in serveral sections longitudinally of the stock and is movable towards and away from the surface by pivoted arms 18. For movement of the arms and sections parallel to the surface, carriages 28, on which the parts are mounted, can be traversed. The carriages are movable upwards by a motor-driven rack- and-pinion mechanism and downwards under gravity. The stock, which is in flexible lengths, can be gradually released from the guide 12 by random release of the various sections, and collects in a trough 82 at the base of the surface. Arms 87, Fig. 3, which are coupled to eccentrics 78 operating the walking beam mechanism of the cooling bed 10, shift the stock on to the bed. The stock collects against a stop 88 until it is required to shift it on to a roller table 76. A stop 90 is then raised, and part of the cooling bed is lifted by arms 96 so that the stock can clear the stop 88.