baber/WOPTO huggingface dataset:
Patent GB-1289740-A (GB)
IPC: H01L29/78
Filed: 1969-12-24
Abstract: 1289740 Semi-conductor devices MULLARD Ltd 24 Dec 1969 62909/69 Heading H1K An IGFET has its source and drain regions formed solely by ion bombardment. An N type silicon wafer 1 with a flat surface 2 has a thick silicon oxide film 3 which is partially removed and replaced by a thinner oxide film 4. A layer of molybdenum is deposited over the surface and partially removed to leave a central portion 5 which forms part of the gate electrode, and a peripheral portion 6. Openings (7, 8), Fig. 2 (not shown), are made in the film 4 to either side of the portion 5, and subsequently a layer of aluminium is deposited over the surface, including the openings, and subsequently partially removed to form source and drain electrodes 11, 12, smaller openings 14, 15 and another portion 10 of the gate electrode. Boron ions are used to bombard the surface, and are of sufficient energy to penetrate the source and drain electrodes and insulating film 4 but not the gate electrode structure 4, 5, 10 or the peripheral region 3, 6. Source and drain regions 17, 18 are formed in the wafer 1. Nickel may be used instead of molybdenum for portion 5. In a second embodiment the gate electrode may comprise two layers of aluminium, the first layer replacing the molybdenum or nickel. .In a third embodiment the source and drain electrodes occupy the openings in the film 4 and extend on to the film 4 surrounding the gate electrode. Alternatively the gate electrode may consist entirely of molybdenum or nickel.
Patent GB-1297254-A (GB)
IPC: C09K23/00
Filed: 1969-11-04
Abstract: 1297254 Dispersing oil CONTINENTAL OIL CO 4 Nov 1969 [4 Nov 1968] 6995/72 Divided out of 1297253 Heading C1C [Also in Division B1] The Specification is similar to Specification 1,297,253, but its description and claims are directed to compositions comprising the pine oil and the non-ionic ethoxylated alcohol without the anionic surfactant.
Patent GB-1302912-A (GB)
IPC: D01H5/50
Filed: 1970-01-21
Abstract: 1302912 Drafting rollers; weighting NIPPON SEIKO KK 21 Jan 1970 2836/70 Heading DID  In a drafting mechanism having a weighting arm 4 carrying an arm 6 for carrying a twin top roller 1 by its arbor 1a, a top cradle 7 and a top tensor 11 on the cradle, the arm 6 is universally pivotable e.g. about a ball 8, on a support 3 carried by arm 4. The support for arm 6 has a forwardly sloping bottom plate 3a so that arm 6 can slide over a short distance parallel to arm 4 and so that arm 6 is biassed forwardly by the weighting spring 9 engaging between an abutment 6b on arm 6 and a downward projection 3d on a top plate of support 3. The forward bias of arm 6 urges the top cradle 7 at portions 7b into contact with a bottom tensor 10. Cradle 7 has front portions 7a which engage the nose of the bottom tensor and determine the separation of the upper and lower tensors. The extended sliding portion 3b may be formed on arm 6.
Patent GB-1304353-A (GB)
IPC: F16F9/18
Filed: 1969-07-29
Abstract: 1304353 Hydraulic dampers OLEO INTERNATIONAL HOLDINGS Ltd 15 July 1970 [29 July 1969] 37999/69 Heading F2S A tube-within-a-tube type hydraulic damper has a plurality of baffles 34 of part-annular shape in the reservoir 18 to prevent surging of the liquid and consequent emulsification, especially when the damper is used horizontally. At least one passage 28 connecting the reservoir 18 with the working cylinder is provided on one side of a first diametral longitudinal plane AA of the damper. The baffles are required to be symmetrical about a second plane BB normal to the first, and the gaps between the ends of each of the baffles are on the same side of the plane AA as the passage(s) 28. When the damper is horizontal, the baffles divide the upper part of the reservoir into a longitudinal series of compartments opening at their lower sides into a common space extending the whole length of the reservoir. The baffles 34 consist of a semi-annular flexible member 35 extending across the reservoir and sandwiched between semi-annular plates 39 and annular plates 36. Holes 41 provide restricted communication between the tops of the compartments. On outward movement of the piston 14 liquid in the chamber 26 flows via port 27, annular passage 16, passage 30, and a flow-restricting means 29 to the chamber 23. At the same time liquid flows from the reservoir 18 through the passage(s) 28 into the chamber 23 and through a one-way valve 24 into the cylinder. On inward movement of the piston 14 liquid flows through a piston valve 25 into the chamber 26 and then through 27, 16, 30, 29 and 23, as above, and 28, to the reservoir 18.
Patent GB-1309281-A (GB)
Title: Method for underground disposal of radioactive waste
IPC: G21F9/24
Filed: 1970-05-26
Abstract: 1309281 Disposal of radio-active waste HALLIBURTON CO 26 May 1970 25278/70 Heading G6R Solid radio-active waste is injected into a mixture of dry cement and an aqueous liquid containing less than 5% by volume of liquid other than water, and the slurry formed is pumped into a well bore, so as to produce formation fractures into which the slurry is forced. The solid material is stated to prop open the fractures while the slurry is solidifying. The aqueous liquid constituent may be a low level radio-active waste and the solid material a high level waste. The slurry may also include a friction reducer and a cement setting retarding agent. After solidification has taken place, further layers of slurry may be pumped into the well adjacent the first layer. An annular seal of non-radio-active cement slurry is then introduced between the radio-active material and the well bore.
Patent GB-1310223-A (GB)
Title: Electromagnetic devices
IPC: H01F6/04
Filed: 1969-06-05
Abstract: 1310223 Superconductor coils BRITISH OXYGEN CO Ltd 4 Sept 1970 [5 June 1969] 28626/69 Headings H1K and H1P An electromagnet comprises a winding of composite stabilized superconductor wire and an assembly of tubing of a material of high thermal conductivity arranged in thermal contact with the major surfaces of the winding. As shown a quasi-toroidal coil 2 having an axis 3 is wound from stabilized superconductors in the form of a plurality of very fine filaments embedded in normal metal, and is wrapped with Cu tubing 4 through which liquid or supercritical He flows to cool the winding. The winding 2 and tubing 4 may be "potted" to secure them together. The winding is enclosed in a radiation screen 6 refrigerated by means of tubes 8 and surrounded by a housing 10. The spaces inside screen 6 and between screen 6 and housing 10 are evacuated.
Patent GB-1311275-A (GB)
Title: Measuring apparatus employing optical gratings
IPC: G01D5/347
Filed: 1969-06-04
Abstract: 1311275 Photo-electric displacement measurement FERRANTI Ltd 3 Sept 1970 [4 June 1969] 28193/69 Heading G1A [Also in Division G4] An index grating for photo-electric displacement measuring apparatus comprises a substrate carrying strips of photo-sensitive material on which are superimposed two sets at least of transparent, electrically conductive material, the strips of the respective sets alternating with one another and being connected to respective bus-bars, to provide a polyphase output. In the arrangement of Figs.1-5, the index grating 10 is transmissive. Light from lamp 1 is collimated at 2, passes through the movable index grating 10, and is reflected from scale grating 3 back to the photo-sensitive areas of the index. The latter is built up on a substrate of glass and comprises a set of conductive e.g. silver strips 12 connected to bus-bar 13, a set of photo-sensitive strips e.g. evaporated cadmium sulphide rendered photo-voltaic by cuprous ion doping, and the two sets of transparent, conducting strips 17, 19. This arrangement gives a two phase output on bus-bars 18, 20. By connecting the strips to form bus-bars, Fig.10 (not shown), a four phase output; or a two phase push-pull output may be provided. As many as ten phases may be provided. Other arrangements include: an opaque index grating, Fig.6-9 (not shown), in which the two sets of transparent, conducting strips are superimposed on photo-sensitive strips on an opaque substrate; reflective and transmissive gratings with irregular spacings.
Patent GB-1312623-A (GB)
Title: Load carrier
IPC: B62B3/00
Filed: 1969-03-18
Abstract: 1312623 Hand trucks E M WILCOX Ltd 12 June 1970 [18 March 1969] 14242/69 Heading B7B A detachable side wall 3 adapted for use with a wheeled load carrying base, is provided with strengthening bars 6 whose width does not exceed that of uprights 5a, the bars and ends of uprights 5a being adapted to fit within base sockets 4. The strengthening bars 6 ensure a close transverse fit in sockets 4, but some movement along the length of each side is permitted. When in position horizontal plates 10 on the verticals extend from the bottom of the socket and the side may be moved such that the plate 10 coacts with the bottom surface of the bracket to prevent vertical movement. A catch (Fig. 3, not shown) may be provided on the cross member 7 to prevent movement along the length of each side, and catches may be provided on the base or member 7 to hold them relative to each other in the fully downed position.
Patent GB-1313284-A (GB)
Title: Method of slush moulding articles of plastics materials having  textile linings
IPC: B29C41/18
Filed: 1971-03-18
Abstract: 1313284 Moulding hollow articles of plastics material K F RYBKA 18 March 1971 7172/71 Heading B5A A hollow article, e.g. a boot, of thermosetting plastics material with a heat insulating and moisture diffusing lining is produced by slush moulding a plastics material 2 in a mould 1; after shaping and before curing it a coating 8 of thermosetting plastics material is applied to the inner surfaces of the article to which a layer 9 of natural or synthetic fibres is applied, such fibres being embedded in the coating by an expansible bag 10 which is collapsed and withdrawn from the mould before the mould is heated to effect curing. Alternatively the provision of the coating 8 is eliminated and the fibres are applied directly to the inner surfaces of the material 2 whilst it is tacky.
Patent GB-1316172-A (GB)
Title: Smoking mixture
IPC: A24B15/30
Filed: 1970-03-23
Abstract: 1316172 Treating tobacco IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [23 March 1970] 13867/70 Heading A2C A chlorophyll-free smoking mixture comprises tobacco and a carotenoid, the ratio of carotenoid to tobacco being in the range 1:50 to 1:750. In the examples, shredded reconstituted tobacco sheet is sprayed with solutions of #-carotene, acetate or apocarotenal, and shredded tobacco rag sprayed with a solution of #-carotene. Other isoprenoids specified are α-carotene a naturally occuring mixture of α- and #-carotenes, admixtures of α-, #- and γ-carotenes, lycopene, 15,15'-dihydro-carotene, 4,4'-diketo-15,15'-dihydro-carotene, apocarotenoic acid derivatives, bixin and canthanxanthin. The reconstituted tobacco compositions exemplified are formed from ball milled tobacco together with glycerol, sodium carboxymethyl cellulose, magnesium carbonate and calcium carbonate ,and either potassium citrate or bentonite. In one example, the treated reconstituted tobacco is blended with untreated tobacco rag.
Patent GB-1318910-A (GB)
Title: Method and apparatus for process control
IPC: G05B15/02
Filed: 1970-10-30
Abstract: 1318910 Programmed process control; automatic control OWENS - CORNING FIBERGLAS CORP 30 Oct 1970 51845/70 Headings G3N and G3R A process control apparatus comprises a signal generator 1G providing a clock signal to increment a counter CT for each control period. The times to effect the read out of transducers, (not shown), are set into scan registers ST 1-3 and the phased relationships between control loops 1-3 into phase registers PR1-PR3. The phase number for a control loop is added to, or has subtracted from it, the count in the counter CT by a combining device MC in dependence on the direction of the count cycle. The resultant is divided by the scan number in a divider DV. The remainder is checked by a unit RC which provides a loop relection signal in response to an integer quotient. A multiplexer MP1 sequentially connects phase and scan number registers to units MC, DV in response to a signal from a sequencer SQ, actuated through a diode D1 by a signal from the generator 1G. The selection signal closes contacts 1L3- 3L3 in the multiplexer to connect thermocouples of control loops to a digital computer, or connect set-point information, or connect storage devices for corrective signals to be applied to power regulators of bushings of a glass-fibre processing plant.
Patent GB-1319777-A (GB)
Title: Electric pulse generator
IPC: H05C1/04
Filed: 1969-08-05
Abstract: 1319777 Pulse generators AEC ELECTRIC FENCING Ltd 19 June 1970 [5 Aug 1969] 39165/69 Heading H3T A pulse generator, e.g. for an electric fence, comprises a capacitor C1 which is periodically discharged into the primary of an output transformer T2 by a semi-conductor switch (thyristor TH) triggered by a timing circuit having a separate capacitor C2 and a Zener diode D2 to stabilize its supply voltage. C2 is charged via a resistor R3 until a trigger diode D3 becomes conductive to discharge it into the trigger of TH, which is turned off by the back e.m.f. of T2; a diode D4 protects the thyristor in this respect. The generator is supplied from a battery or, as shown, from A.C. mains on a transformer T1 rectified by diode D1. Neons N1, N2 indicate the supply and charging of C1 respectively.
Patent GB-1322942-A (GB)
Title: Devices for producing a flow of gas
IPC: F17C11/00
Filed: 1970-08-07
Abstract: 1322942 Spray producers CIBA-GEIGY AG 7 Aug 1970 38259/70 Heading B2F [Also in Division F4] A spray producer comprises a gas container la and a liquid container 35 mounted side-byside on a base 37, the gas container having a manually operable discharge valve 2, the gas being discharged into a venturi nozzle 39, a tube 45 depending from the narrow part 41 of nozzle 39 into the liquid 36 in container 35. The valve 2 is operated by a push-button 5c which depresses valve stem 20 and displaces a flexible gasket 126 to admit gas from the container 1a, via a radial bore to the outlet passage 43. The gas in the container 1a is dispersed within a porous carrier 8 contained within a gas-permeable bag 6 (see Div. F4). The liquid 36 is contained within a flexible bag 56 within container 35.
Patent GB-1324869-A (GB)
Title: Detectors
IPC: F15C3/04
Filed: 1970-09-22
Abstract: 1324869 Fluidic elements ROBERT BOSCH GmbH 22 Sept 1970 [23 Sept 1969] 44978/70 Heading G4P [Also in Division G1] The presence of an object 8 is determined by directing a gas jet from a nozzle 1 at the diaphragm 17 of sensing element 4, the diaphragm controlling the rate of gas flow from bore 14 which in turn determines the pressure in channel 13. If object 8 is present, the diaphragm takes up the position shown and gas entering at 11 passes from nozzle 12 as a jet which passes down bore 14 into cavity 15, and then down bore 16 to atmosphere. The jet from nozzle 12 causes a negative pressure in channel 13. If the object 8 is absent, the gas jet from nozzle 1 pushes the diaphragm towards bore 14 thus restricting the flow of gas therefrom and causing a positive pressure to appear in channel 13. A valve 7 responds to the pressure in channel 13 to control an implement. The presence of a jet of liquid or gas may also be determined by the arrangement shown.
Patent GB-1325743-A (GB)
Title: Automatic tool changing devices in machine tools
IPC: B23Q3/157
Filed: 1970-10-19
Abstract: 1325743 Tool changers WERKZEUGMASCRINENKOMBINAT FRITZ HECKERT KARL-MARX-STADT VEB 19 Oct 1970 49480/70 Heading B3B An automatic tool-changer in a vertical spindle machine-tool (e.g. a planer-milling machine) comprises a tool store, and a toolchanging gripper rotatable about a vertical axis and movable along the axis between the store and the spindle as determined by limit stops, the gripper having two arms, each of which can carry a tool. As shown, the machine includes a bed 1, pillars 2 forming vertical guides 5 for a cross-beam 6 which provides horizontal guides 7 for cross-slides 8, 9 each of which mounts a vertically movable tool rest 11, 12 including tool spindles 13, 14. A chaindriven tool store 17, and an automatic tool changer 21 are provided. The latter comprises a vertical guide 20 along which a carriage 22 is drivable by a feed screw 23. A pair of toolchanger arms 24, 25 are provided, the arms being arranged mutually at right angles. In operation the spindle whose tool is to be changed is positioned along beam 6 so as to be vertically above tool-changer 21. With the arms 24, 25 disposed as shown in Fig. 3 the carriage 22 is raised until the tool-receipt aperture 28 of arm 25 engages the tool in the spindle. The carriage is then lowered to extract the tool from the spindle and the arms are indexed through 90 degrees to position arm 24 carrying another tool from store 17, beneath the spindle. After raising the carriage to insert the new tool, it is lowered and the arms rotated through 180 degrees so that the old tool is received in the tool store. Limit switches control the carriage stroke. These switches and their associated stops are provided on the tool rests or arms 24, 25 so that the vertical movement of the carriage is restricted in range according to the vertical position of a tool rest at the time of a tool change operation. Arms 24, 25 are telescopically extensible. Carriage 22, tool changer 21 and guide 20 are indexed together via a worm drive. Instead of their relative angular disposition being as shown, arms 24, 25 can be 180 degrees apart.
Patent GB-1332049-A (GB)
Title: Eyelash pack
IPC: B65D1/34
Filed: 1971-06-23
Abstract: 1332049 Packaging; eyelash container CRYSTAL PRODUCTS CO Ltd 3 May 1972 [23 June 1971] 29475/71 Headings B8C and B8P A disc-shaped plastics holder 1 for eyelashes comprises an annular or part annular depression 3 in which a strip of eyelashes 7 is secured by glue at its base 8. The holder is encased in a rectangular cardboard box having a circular window of transparent plastics material.
Patent GB-1333432-A (GB)
Title: Fishing reels
IPC: A01K89/015
Filed: 1971-04-19
Abstract: 1333432 Fishing reel H POLICANSKY (K S Warren) 19 April 1971 [2 March 1970 16 Oct 1970] 9971/70 and 49359/70 Heading A1A In a fishing reel of the multiplying type a spool 101, journalled on a shaft 102 via a bush 105 is turned by a winding handle 132 through gears 130, 131 and through a friction coupling comprising a disc 135 engaging a ring 136 fixed to gear 131 and spool 101 respectively. To adjust the friction coupling the shaft 102 is rotated by handle 127 to screw it into or out of a bush 109 rotatably mounted in casing 104. The disc 135 which is rotatably carried on shaft 102 between springs 137 and 147 is thus urged to a greater or lesser extent against the ring 136. An O-ring 128 forms a seal and provides frictional restraint to keep lever 127 where it is set. Bush 109 may be rotated by turning knob 120 of spindle 117, acting through gears 116, 113, to adjust the relative position of shaft 102 and thus change the range over which the lever 127 affects the frictional coupling. The winding handle 132 is prevented from turning in the unwinding direction by a ratchet and pawl 138, 139. - To provide a very small drag on the spool when the friction coupling is disengaged for casting a film of oil, supplied through wick 148 from reservoir 149 in shaft 102 is maintained between the bearing surfaces of the shaft 102 and the spool 101. The oil is retained either by a sleeve 142 and a washer 146 or (not shown) by helical grooves at each end of the shaft or bush 105 acting to pump oil inwardly on rotation, additional holes being provided for the oil to return to the reservoir.
Patent GB-1336296-A (GB)
Title: Integrated circuit arrangments
IPC: H03K19/003
Filed: 1970-12-02
Abstract: 1336296 Integrated circuits ARBEITSSTELLE FUR MOLEKULARELEKTRONTK 2 Dec 1970 57268/70 Heading H3T [Also in Division G1] An integrated circuit with hot redundancy consists of a plurality of identical subsystems 3, 4 driven by a common signal source 1 or 2 and having their outputs connected in parallel and individual means 5, 6, Figs. 1 and 2, 10, 11, Figs. 3 and 4 for determining whether each subsystem is non-defective or defective is connected to the outputs of the subsystems. The means 5, 6; 10, 11 includes a common summation device 7. By hot redundancy is meant that all the subsystems are initially electrically interconnected during manufacture without any individual functional testing. The circuit of Fig. 1 includes differentiators 5 and 6 and the output of the summation device is fed to a memory 8. The circuit details of Fig. 1 are shown in Fig. 2. Fig. 3 includes switches 12 and 13 and switch control devices 10, 11 which are shown in detail in Fig. 4 and each include memories 15 and 17 and a discriminator 16. After the circuit of Fig. 3 is switched on and tested, a 0 signal or a 1 signal must occur during the operating time at output 18 depending on whether the subsystem 3 is defective or non- defective. The outputs of the memories 15 and 17 are a predetermined signal 0, when the circuit is switched on. The predetermined output of the subsystem 3 considered is fixed in the memory 15 and is compared with the signal at the output of the subsystem after the input signal has been changed. If the input signals of the discriminator 16 are the same corresponding to the associated subsystem being defective a 0 signal output occurs at 18 and switch 12 is open. If the input signals of the discriminator 16 are different corresponding to the associated subsystem being non-defective a 1 signal output occurs at 18 and switch 12 is closed. A pulse supplied to an input 19 ensures change over of the subsystems 3 and 4 if non- defective after a decay of the pulse from capacitor 21. Details of the Fig. 3 circuit are disclosed in Fig. 5 (not shown).
Patent GB-1341031-A (GB)
Title: Fluid flow sensing systems
IPC: G01L13/02
Filed: 1971-04-19
Abstract: 1341031 Fluid pressure servosystems ROTAX Ltd 19 April 1971 [10 March 1970] 11410/70 Heading G3P Also in Division G1 In a system for detecting when fluid flow within a duct exceeds a predetermined value the interior of a housing 10 is subjected to the static pressure in the duct via and conduit 11, and the interior of a bellows 14 to the dynamic pressure in the duct via a conduit 15, and the interior of a bellows 13 is evacuated, the bellows 13, 14 each being connected between the housing 10 and one arm of a lever 12 such that when the fluid-flow exceeds the predetermined value, the leverage applied by bellows 13 in a clockwise sense (as viewed in Fig. 1) is exceeded by the leverage applied by bellows 14 in an anti-clockwise sense, the lever 12 thus turning to open an orifice at an end of conduit 16. Fluid then flows through conduit 16 into a bellows 21 and displaces a bridge member 19, supported by two inter-connected opposed bellows 18 filled with an inert gas, thereby closing an electric switch 20 and operating a warning circuit. The position of the point 13a at which bellows 13 is attached in the housing 10 may be varied to adjust the leverage applied by the bellows 13 and thus the value of fluid flow at which a warning is given.
Patent GB-1343132-A (GB)
Title: Protective plastic hoods
IPC: A62B18/04
Filed: 1972-05-24
Abstract: 1343132 Ventilating headwear PLYSU Ltd 24 May 1972 [5 March 1971] 6157/71 Heading A3V A protective thermoplastic hood for use with suits for wear when working with toxic materials comprises a top portion having a double skin, 1, 2, the double skin including an annular preformed duct 4 having an inlet provided by a skirt 5 for connection to an air supply and a number of apertures or a slit (not shown) positioned such that in use air from the duct is directed downwards across a wearer's face (see arrows in Fig. 2). The hood is formed by welding together the two skins 1, 2, 'the inner of which is provided with a ridge 3 to form the duct 4. In place of the skirt 5, the air inlet may be provided as a separate air inlet part leading to the duct 4.