baber/WOPTO huggingface dataset:
Patent GB-1207370-A (GB)
Title: Improvements in or relating to semiconductor device and method of making same
IPC: H01L23/485
Filed: 1967-12-28
Abstract: 1,207,370. Semi-conductor devices. GENERAL INSTRUMENT CORP. 28 Dec., 1967 [8 Feb., 1967], No. 58963/67. Heading H1K. A semi-conductor device such as the insulated-gate field-effect transistor shown has two active surface regions 20, 22 separated by a depression 16, with oxide layers 10, 18 respectively covering the active areas and the depression, and a metal coating 30a covering the oxide layer 18 but not overlapping the surrounding oxide layer 10. In the embodiment the P-type source and drain regions 20, 22 are formed by masked diffusion of boron into an N- type Si body A, followed by etching or mechanical removal through an aperture 12 in the oxide layer 10 to produce the depression 16. The relatively thin oxide layer 18 is then grown in the depression 16, and a layer of aluminium is vapour deposited to cover both the oxide layers 10 and 18, and to contact the source and drain regions 20, 22 through further apertures 26, 28 in the oxide layer 10. A layer of positive photo-resist is next deposited over the entire surface to fill the apertures, but so as to have a flat upper surface. Parts 32c, 32d of this layer filling the apertures 26, 28 are masked, as are other parts defining contact areas (34, 36, 38), Fig. 11 (not shown), and the photo-resist is exposed to light. The light penetrates only the relatively thin regions of the photo-resist over-lying the oxide layer 10, and the part 32b lying within the aperture 12 above the depression 16 remains unexposed, and is consequently not removed when the exposed portions are removed, thus protecting the portion 30a of the aluminium layer from a subsequent etch. The masked parts 32c, 32d are also left intact, protecting the underlying regions 30b, 30c of the aluminium layer. The aluminium portion 30a thus constitutes the gate electrode of the I.G.F.E.T. while the portions 30b, 30c constitute the source and drain electrodes respectively. Finally the remaining photo-resist material 32b, 32c, 32d is removed. As described the device comprises part of an integrated circuit, but a single device is also included within the invention. Alternative semi-conductor materials include Ge and Se of either conductivity type, or intrinsic.
Patent GB-1394550-A (GB)
Title: Mould
IPC: C11C5/02
Filed: 1973-12-27
Abstract: 1394550 Casting mould FIBER GLASSEVEKCOAT CO Inc 27 Dec 1973 59857/73 Heading B5A In a mould of plastics material comprising two mould sections 8, 10 at least one of which has a mould cavity and a filling gate, each mould section 8 has a peripheral planar flange 26 which engages the flange 24 of the other portion 10, and the sections are releasably held together by co-operating clamping elements, e.g. loops 30 and lugs 38, carried by the mould sections and made of the same plastics material. The mould may be for plaster, gelatine or a comestible, but as shown is for a wax candle having a wick 22 which is located at its lower end in a groove 46, Fig. 2, or a hole W, Fig. 6, and at its upper end by pegs L. The loops 30 have struts 34 which snap over the domed ends 40 of the lugs 38. A peripheral rib 26 on one mould section engages a groove 28 in the other.
Patent GB-1340970-A (GB)
Title: Process for preparing acid diffusion-dialysis membrane
IPC: C08F8/44
Filed: 1971-12-29
Abstract: 1340970 Production of diffusion dialysis membranes ASAHI GLASS CO Ltd 29 Dec 1971 [29 Dec 1970] 60568/71 Heading C3P [Also in Divisions C2 and B1] An acid diffusion dialysis membrane is prepared by polymerizing a monomer mixture including a monomer I, selected from vinyl benzenes and vinyl pyridines, and a monomer II being a non-conjugated divinyl compound, in the presence of at least one thermoplastic or elastomeric polymer III being swellable in the monomer mixture, to form a film having a thickness of 4-100 microns, and then introducing anion exchange groups into the resulting film. The weight ratio of monomer II to monomer I is preferably 1-25 to 100. The ratio of the polymer III to the monomer mixture is preferably 100-600 to 100. Polymer III may be in the form of a film, which is dipped in the monomer mixture such that it is swelled, and the monomer mixture absorbed therein is then polymerized. Alternatively polymer III may be in the form of a powder or granules, which is admixed with the monomers, formed into a film and polymerized. Polymerization may be brought about by heat/initiator, or by photopolymerization or high energy radiation. Monomer I may be styrene, in which case the ion exchange groups are introduced by halo methylation and then amination. It may also be an ar-halo styrene, in which case amination is only necessary. If monomer I is a vinyl pyridine, quaternization is used. Examples of the divinyl compound II are divinyl benzene, and ethylene glycol diacrylate or -methacrylate. Examples of polymer III are homo- and copolymers of vinyl chloride, vinylidene chloride, ethylene and propylene, and styrene/butadiene rubber, butyl rubber, chlorinated polyethylene rubber, acrylonitrile/butadiene rubber, and chlorosulphonated polyethylene rubber. Polyphenylene oxide is also mentioned. Polymerization may also be in solution, in which case the film is cast.
Patent GB-1330328-A (GB)
Title: Circuit arrangement for controlling speed and phase of a head wheel in a vedeo tape recorder
IPC: G11B15/473
Filed: 1970-12-21
Abstract: 1330328 Automatic control of speed BLAUPUNKT-WERKE GmbH 21 Dec 1970 [19 Dec 1969] 60651/70 Heading G3R The speed of a rotating head 13 in a video tape recorder is controlled in response to the phase difference between signals representative of head position (generated at 14) and reference signals, the "gain" of the system as a whole, i.e. the magnitude of the output (controlling) signal, being substantially constant for high frequency fluctuations. Pulses produced at 14 are shaped by transistor 16 and applied to the base of a transistor 18, to the collector of which is applied a ramp signal from a generator (not shown) synchronized with the frame synchronized signals in the video signal (either original or recorded). According to the height of the ramp where the pulses from 14 occur, a control signal voltage is established on a capacitor 19, and is applied to the base of an amplifying transistor 20. In the prior art this controls directly the conduction of further transistors 21, 22, the latter being in series with a retardation winding 23 which thus controls the speed of head wheel 13. It is explained that this arrangement would not correct a phase drift so the present invention provides a differential amplifier 31, 32, one side of which is biased by a potentiometer 36 so that balance occurs when the pulse from 14 occurs "half way up the ramp". Thus, a phase drift produces correction in the appropriate direction. A negative feedback loop comprising a capacitor 37 and resistor 38 effectively reduces the gain of the system for more rapid speed changes.
Patent GB-1384070-A (GB)
Title: Integrated circuit semiconductor data stores
IPC: G11C11/412
Filed: 1971-12-31
Abstract: 1384070 Transistor store SIEMENS AG 31 Dec 1971 [11 Feb 1971] 60907/71 Heading G4C [Also in Division H3] An integrated circuit semi-conductor matrix store contains bi-stable storage cells accessed by drive lines and has a field effect selector transistor connecting each cell to an input or output terminal 25. Each cell contains four FETs as shown and one drive line is connected to the selector FET base, the other to the selector FET substrate. The construction of the selector FET is illustrated (Figs. 3, 4, not shown). The cell may have one selector FET as shown or may have one FET with drive lines for each branch of the memory cell.
Patent GB-1280340-A (GB)
Title: Sheet conveying apparatus
IPC: B65H5/12
Filed: 1969-12-22
Abstract: 1280340 Copying machines XEROX CORP 22 Dec 1969 [26 Dec 1968 62309/69 Heading G2A A means for attaching the leading edge of a sheet 30 to a rotating drum conveyer 17 forming part of a copying machine comprises a longitudinal slot in which is located a bar 20 having a lip portion 21, the bar normally being biased radially inwards so that the front edge of sheet 30 is gripped between the lip 21 and the surface of the drum as seen in Fig. 4. The bar is biased inwards by means of springs 23, which pass through holes in the bar and whose ends engage the drum. Lever arms 25 are pivotally mounted one at each end of the drum, each lever arm having a cam surface 28 at one end and a flat part 29 at the other end. When a door 31 is in the closed position, Fig. 3 (not shown), lever arms 25 pivot downwards so that the cam surfaces are clear of rod 20. The rod is thus spring-urged downwards so that lip 21 lies flush in a correspondingly shaped recess in the surface of drum 17. When the door 31 is partly opened, to about 70 degrees as in Fig.4, the cam surfaces are partly raised because of the engagement of end 33 of door 31 with the flat ends 29 of the levers 25. As the rotation of drum 17 brings bar 20 to the topmost position shown, it engages a stop (24) Fig.2 (not shown) which stops the drum. If the door 31 is now completely opened, as in Fig. 5, the cam surfaces 28 are brought into contact with rod 20, pushing it upwards and lifting lip 21 clear of the drum surface. The leading edge of sheet 30 can now be inserted below the raised lip, as in Fig. 5, and when door 31 is closed again rod 20 is released to retract inwards, so that the edge of the sheet is now firmly gripped between lip 21 and drum 17, as seen in Fig.4.
Patent GB-1270589-A (GB)
Title: Edge beveller
IPC: B24B9/12
Filed: 1969-12-30
Abstract: 1,270,589. Grinding. CORNING GLASS WORKS. 30 Dec., 1969 [30 Dec., 1968], No. 63220/69. Heading B3D. An apparatus for bevelling the edges or rims of vessels, such as television tubes 70, comprises a rotatable shaft 22 having a plate member 64 for supporting the vessel with its edge or rim depending, and first and second motor-driven grinding wheels 95, 96 carried at the upper ends of respective arms 91, 92 for grinding bevels on the inner and outer borders of the edge or rim. The shaft 22 is rotatably supported in an upright column 16 and is driven by gearing 23, 24 from a motor 26. The plate can be raised and lowered by pneumatic pressure supplied through conduits 100, 101 to a rotary union 28 connected to passages within the shaft to engage and locate the vessel and lower it so that its rim rests on rollers 21 carried by webs 18 extending from the column 16. Each grinding wheel 95, 96 is driven by a respective pneumatic motor 93, 94 each carried on an arm 91, 92 secured to a block 73, 74 pivotally mounted on a platform 11. Horizontal weights 77 act on the blocks to urge the grinding wheels into engagement with the inner and outer borders of the rim or edge of the vessel 20, and pneumatic devices 79, 82 are actuatable to urge plungers 80 against extensions 81 on the blocks to retract the grinding wheels.
Patent GB-669143-A (GB)
Abstract: 669,143. Mounting reflectors. KOEHLER MAUFACTURING CO. Oct. 4, 1949 [June 30, 1949], No. 25551/49. Class 75(ii) In an electric battery lamp a concave reflector 10, Fig. 1, is adjustable relatively to a bulb 6 by a plurality of cam-operated adjusting devices each independently operable from outside the casing. The bulb 6 is pressed resiliently against the lens 3 so that in the event of the lens or the bulb being broken the socket is automatically moved forward to interrupt the electric supply to avoid an explosion in an explosive atmosphere, a feature of the miner's cap lamp disclosed in Specification 548,223 to which reference is made. The reflector 10 is supported by three links 11 (one only shown in Fig. 1), each engaging a notch in the edge of the reflector and having a slot for connection with an eccentric pin 16 on a cam 13 having a flanged head 14, having notches to receive a spanner by means of which the cam 13 is turned for actuating the associated link 11 to adjust the reflector 10. The links 11 may be guided to move linearly by means of bosses provided on the inner wall of the battery casing.
Patent GB-712888-A (GB)
Abstract: 712,888. Gyroscopic apparatus. BENDIX AVIATION CORPORATION. Dec. 9, 1952 [Dec. 17, 1951], No. 31187/52. Class 97(3) An artificial horizon comprises in a case 15 secured to an aircraft a gyroscope rotor 3 rotatable about a normally vertical axis in a casing 5 which is rotatable on trunnions 9 about a transverse axis in a gimbal 7, this gimbal being rotatable about the longitudinal axis 11 of the craft. Attached to the rotor casing 5 is a dial 31 graduated in degrees and movable in front thereof is a horizon bar 17 pivoted at 20 to gimbal 7 and actuated by rotor case 5 through a crank and pin mechanism 21, 23. Secured to gimbal 7 and extending between the dial 31 and the horizon bar is a mask 27 through an aperture 30 of which the actual pitch angle of the craft can be read on dial 31.
Patent GB-2001930-A (GB)
Title: Releasably securing a materials handler to a boom
IPC: E02F3/40
Filed: 1978-06-12
Abstract: A system for connecting a boom to a tool of the type in which brackets (26) secured to the tool define a pair of coaxial, axially-spaced bores (64), and the boom defines a pair of cylindrical coaxial bosses (54). In such a system, the invention features a stop (60) associated with each of the bores and providing an alignment surface, typically defined by a cylinder coaxially with the bore and of radius not less than that of a boss. The stop surfaces face generally towards the center of gravity of the tool, each stop surface subtends an arc in the range of 120 DEG  to 180 DEG , and each stop is open on the side of the associated bore opposite the stop surface thereof. <IMAGE>
Patent GB-2001037-A (GB)
Title: Sheet feeding apparatus
IPC: B65H9/00
Filed: 1978-07-06
Abstract: A sheet feeder for a screen printing machine of the kind having a sheet receiving bed 5 which is horizontally reciprocable between a printing position and a sheet receiving position, wherein the sheet feeder comprises a feed board 13, means 8 for delivering a sheet to the feedboard 13, means for registering the sheet on the feedboard, means 17, 18 for transferring the registered sheet to the bed 5 and placing it in registration thereon, and means for securing the sheet to the bed. <IMAGE>
Patent GB-2005966-A (GB)
Title: Improvements in or relating to suppressor circuits
IPC: H03G3/20
Filed: 1978-07-25
Abstract: A scratch suppressor circuit is provided comprising a delay circuit and a scratch detector both operable on an applied signal, the scratch detector being operable in conjunction with blanking means, conveniently including one or more light dependent resistors, LDR1, LDR2, for effecting blanking of the delayed signal when a scratch is detected, the blanking means being effective for causing the delayed signal to be blanked by causing it to be faded out and/or faded in. <IMAGE>
Patent GB-2002507-A (GB)
Title: Solar heater
IPC: F24S20/20
Filed: 1978-08-04
Abstract: A solar heater (1) comprises a paraboloidal dish (2) having an inner concave reflecting surface (3), an outer convex surface (4) and a conduit (5) therebetween the conduit (5) being of spiral configuration in plan view of the dish (2). The dish (2) has located therein an evaporator (8) formed of a tube wound to form a helix of hollow frusto-conical longitudinal cross- section which tapers downwardly to a flattened lower end portion of reduced diameter. One end of the tube is in communication with the conduit (5) and the opposite end portion extends through an aperture (6') in the dish (2). In use, water passes through the conduit (5) and then passes through the evaporator (8). A proportion of solar energy incident on the reflecting surface (3) is absorbed by the surface (3) and raises the temperature of the surface (3) with the result that the water in the conduit (5) is heated also. The preheated water in the conduit (5) thereafter enters the evaporator (8). <IMAGE>
Patent GB-2005312-A (GB)
Title: Modifying the microstructure of steel sections by multi-stage cooling
IPC: C21D9/52
Filed: 1978-09-19
Abstract: The elastic limit and breaking load of steel sections are improved by a process of surface hardening and self-tempering comprising a cooling stage which converts the surface region to austenite and ferrite. This is followed by a rapid hardening cooling which converts that austenite to martensite/bauxite and is interrupted to allow the surface layer of the section to be tempered by non-hardened inner portions of the section. The rapid cooling is succeeded by a slow cooling, whereby core austenite transforms to ferrite and carbide.
Patent GB-2006069-A (GB)
Title: Metal casting cores
IPC: B22C9/10
Filed: 1978-10-02
Abstract: Casting cores are formed from a helical coil of wire, the coil 1 having an outer diameter corresponding to the desired bore of a passageway. To hold the coil in shape, a support wire 2 is provided, passing down the centre of the coil, of stiff material which easily takes a permanent set, such as mild steel or aluminium. After casting, the core is removed by gripping the wires, and pulling them out of the passageway. The surface finish of the passageway may be improved by investing the shaped coil with a smooth coating of suitable heat resisting material e.g. talc or plumbago. The ends of the core wires may be encased in sand prints, 10, 11, for improved accuracy of location in the mould. Divided passageways can be made by joining lengths of coil and stiffening wires. <IMAGE>
Patent GB-2016981-A (GB)
Title: Copying machine
IPC: B24B17/02
Filed: 1979-01-31
Abstract: A copying machine comprises a plurality of templates (7,8) each cooperating with a corresponding follower (22 or 30). The movements of elements (3,28) controlled by the templates (7,8) are transmitted to the support (5) of the workpiece (6) and/or to the support (19) of the working tool (20) for producing displacements of these elements (5,6 and/or 19,20) in a plurality of directions. Each template (7 or 8) controls the said displacements in a particular direction, and may be mounted rigidly co-axial with the workpiece support (5). <IMAGE>
Patent GB-2018460-A (GB)
Title: Directional coupling for optical fibres
IPC: H04B10/27
Filed: 1979-04-10
Abstract: Low loss directional coupling of optical fibres is obtained by wrapping a tap fibre 13 round a trunk fibre 10. Any cladding is first removed and then the tap fibre wrapped round the trunk fibre. The tap ratio can be varied by a variation in the number of turns or twists of the tap fibre around the trunk fibre. Signals can be abstracted by the tap fibre and also inserted. As shown, 11 is an LED or laser input and 12 and 13 are detectors. <IMAGE>
Patent GB-2022014-A (GB)
Title: Printing Presses
IPC: B41F31/14
Filed: 1979-05-02
Abstract: Printing presses, e.g. offset printing presses, including ink or damping solution feed systems including vibrator rolls are often controlled automatically. A mechanical over-ride system, which does not disturb the automatic control, is described, which can be used to stop the vibrator action if desired. Two locking paws 4, 5 can be brought into a position in which each blocks the vibrator movement. The pawls are mounted on cams which can be turned in turn by a rotatable control shaft. One paw is controlled in its position also by the central control system 9, 10. The other is connected, e.g. by a pin and slot guide, to the press frame. <IMAGE>
Patent GB-2055416-A (GB)
Title: Band clamp
IPC: F16L33/04
Filed: 1979-06-26
Abstract: A clamp comprises a band, opposite end portions (11, 12) of which are folded back over adjacent portions of the band. For tightening the band, there is provided a screw (18) and nut (20). The screw extends through housings (22, 23), each of which extends through an aperture in an associated one of the end portions (11, 12) and has laterally outwardly directed flanges (25) trapped between the end portion and the adjacent portion of the band. Near to its free end, each end portion of the band is secured by welding to the underlying flanges of the housing and to the adjacent portion of the band. <IMAGE>
Patent GB-2060997-A (GB)
Title: Stratified charge memory divide
IPC: G11C11/34
Filed: 1979-01-02
Abstract: A RAM device employs an array of dual gated transistor memory cells (110) accessed by row and column decoding leads (120R and 120C). A separate P type memory region is provided under the column gate (122C) which acquires holes as a function of the input date during the write cycle, for controlling the flow of an output electron current during the subsequent read cycle. The write holes flow from the substrate (104) into the P memory region to record a "l" when both the row gate (122R) and the column gate are at a low positive potential. The write holes become trapped in the P memory region when the low write voltage on the row gate is replaced by a higher storage voltage. During the read cycle both gates are high, and electron current flow from source to drain along a continuous electron conductive path formed under both gates. The high row voltage causes electron conduction at the surface of the P substrate (104) under the row gate by establishing an N type inversion layer. The high column voltage in combination with the positive charge of the write holes promotes the flow of read electrons under the column gate through a buried N channel (138) adjacent to the P memory region. The read conductive path between the source (114) and drain (116) is formed by the row inversion layer plus the N channel. The stratified charge structure functions as an additional gate beneath the column gate which requires trapped write holes in order to allow electron flow when the row and column gates are activated during read.
Patent GB-2056054-A (GB)
Title: Opto-electric Transducer
IPC: G01D5/347
Filed: 1979-08-09
Abstract: An opto-electric potentiometer/transducer device has a disc 31 having an aperture pattern 32 is rotatable in a housing 11 between an LED 21 and a PIN diode detector 25. Rotation of the disc 31 via a drive shaft 20 causes a corresponding signal in the voltage output of the diode 25. The device may also contain circuitry for driving and stabilising the LED and for amplifying the diode output. Various modifications of the device are also described, e.g. to provide a non-linear law, or slider action, or a digital output. <IMAGE>
Patent GB-2031225-A (GB)
Title: Glass-sealed thyristor junctions
IPC: H01L23/31
Filed: 1979-09-10
Abstract: In a thyristor 20, a ring-shaped glass member 40 is affixed to a first major surface 23 of the body of semiconductive material to form a seal protecting the PN junction 21 between the first emitter region 24 and the first base region 26; and a second annular shaped glass member 46 is affixed to the edge of the body of semiconductive material to form a seal protecting the PN junctions formed between the first base region 26 and the second base region 28 and between the second base region 28 and the second emitter region 30. The ring-shaped glass members 40, 46 may be formed by heating glass preforms in an atmosphere comprising a predetermined mixture of nitrogen and water vapor to cause the glass preforms to soften and fuse to the surfaces of the body of semiconductive material. <IMAGE>
Patent GB-2034343-A (GB)
Title: Reactive dyestuffs
IPC: C09B62/503
Filed: 1979-09-24
Abstract: Reactive dyestuffs of the formula   <IMAGE>  wherein     D is an organic dyestuff radical, Y is a direct bond or a bridge member which may be a carbon atom in an aromatic-carbocyclic or aromatic-heterocyclic ring,     R and R1 are H or alkyl, R2 is a vinyl,  beta -halogenovinyl or -CH2CH2-X where X is a relative group and n is 1 or 2, and wherein ring B may be further substituted, are outstandingly suitable for dyeing and printing textile materials of natural or regenerated cellulose or natural or synthetic polypeptides. Highly stable dyeings are obtained in high yields.