baber/WOPTO huggingface dataset:
Patent GB-1293408-A (GB)
Title: Method of producing semiconductor bodies
Inventor: PANISH MORTON B
IPC: H01S5/00
Filed: 1969-12-22
Abstract: 1293408 Making semi-conductor lasers WESTERN ELECTRIC CO Inc 22 Dec 1969 [23 Dec 1968] 62286/69 Heading H1K A laser structure is produced by growing an epitaxial layer of zinc-doped gallium aluminium arsenide on an N-type gallium arsenide substrate, zinc being diffused from the layer into the substrate to form a PN junction during and/or after the growth of the layer. Evaporated contacts respectively of gold and tin are formed on the lapped layer and substrate, and the structure is then cut and cleaved to form individual diodes. The arsenide layer is grown from a source solution of gallium arsenide, aluminium, and zinc in gallium and having an aluminium content of greater than 0À05 atom per cent and a zinc content in the range 0À1-1À0 atom per cent. The gallium arsenide is dissolved in the gallium under a hydrogen atmosphere and the cooled material placed with the aluminium and zinc in he well 16 of a carbon boat 14 in a quartz vesselt 11. After flushing with nitrogen, hydrogen is passed through the apparatus during the remainder of the process. The components of the source solution are heated to an initial temperature in the range 700-1100‹ C. to produce a melt which projects slightly from the well 16. The melt is cooled in a controlled manner to a predetermined temperature at which the furnace 22 is tilted so that sliding mass 17 impacts the remote end of the substrate carrier 15 which is thus moved to deposit an N-type gallium arsenide wafer 25 (lapped and etch-polished and having a carrier density of 3.10<SP>18</SP>-1À10<SP>19</SP> electrons cm.<SP>-3</SP>) on the melt in the well, oxide scum &c. being cleared from the melt by the passage of carrier edge 19. Controlled cooling is continued and may include an annealing stage to extend zinc diffusion and modify the zinc concentration profile. A separate annealing stage may be carried out by reheating after the structure has been cooled to room temperature. Annealing (at any stage) may be carried out for more than an hour at a temperature in the range 800-1000‹ C. The furnace includes an observation window 23 and thermocouple 21 for monitoring. In a particular example the substrate 25 is GaAs with (111) major faces doped with Sn to an electron concentration of 4À2.10<SP>18</SP> electrons cm.<SP>-3</SP> and lapped and polished with bromine/ methanol. The source solution (specified) is heated to 1040‹ C. and the substrate dropped on, cooling being carried out at 5‹ C. per minute to 900‹ C. at which point the furnace is reverse tilted to remove the substrate from the source solution. The temperature is then held at 900‹ C. for 3 hours and then lowered to room temperature by removing the apparatus from the furnace. The PN junction-which should be within a minority carrier diffusion length from the hetero junction-is in this example 1À6 Á therefrom.
Patent GB-727130-A (GB)
Abstract: 727,130. Cables. FELTEN & GUILLEAUME CARLSWERK AKT.-GES. Dec. 31,1953 [May 26,1953], No. 36371/53. Class 36. The wound-on insulation of a cable is in two parts 2, 3, separated by a wall 4 which yields to pressure but is impermeable to fluids, the inner part 2 of the insulation being completely filled with impregnant and the outer part 3 with gas under pressure. The conductor 1, which may be circular or not, is preferably compacted by rolling or hammering prior to applying the insulation, which may comprise bands of paper or synthetic material such as polystyrol. The bands used in the outer part 3 of the insulation may also be impregnated. Conductive coverings 7 may be provided over the conductor 1, on both sides of wall 4 and on the outer surface of part 3. Helically applied wires 8 space the core from sheathing 5 to provide a gas passage 9.
Patent GB-739947-A (GB)
Abstract: 739,947. Dynamometer - type measuring instruments. SANGAMO WESTON, Ltd. Feb. 24, 1954 [Feb. 24, 1953], No. 5486/54. Class 37. In a dynamometer measuring instrument a scale error/mutual inductance compensating capacitor 16 is connected directly across the moving coil 3. The field coils 1, 2 induce voltage in the moving coil 3 and this voltage is in one direction or the other as the moving coil 3 is deflected to one side or the other from centre scale or zero mutual inductance position. The capacitor 16 responds to the induced voltage and circulating current drives moving coil 3 slightly upscale or downscale. The scale error and circulating current vary in opposite sense so that proper choice of capacitor 16 counteracts the effect of the inductance changing with deflection. The instrument shown may thus measure high-frequency voltages at a higher order of accuracy. The capacitor 15 across series resistor 11 compensates for total inductance corresponding to a chosen deflection, e.g. the 10-volt scale mark.
Patent GB-2001635-A (GB)
Title: Substituted 3-aminosulphonyl- 4-nitrodiphenyl ether derivatives
IPC: A01P13/02
Filed: 1978-07-20
Abstract: The derivatives have the general formula:   <IMAGE> wherein X is a halogen atom or a trifluoromethyl group, n is 1, 2 or 3 and R is a hydrogen atom or an alkoxycarbonyl, acetyl, chloroacetyl or N,N-dimethylcarbamoyl group. The compounds possess herbicidal properties and may be prepared via the corresponding 3-benzylmercapto compound.
Patent GB-2004606-A (GB)
Title: Internal shoe drum brake adjusters
IPC: F16D65/54
Filed: 1978-08-29
Abstract: The automatic adjuster comprises a strut (29) connected to one brake shoe (13) and having a ratchet on one end portion (34) that engages with a pawl (23) carried on the other brake shoe (12), the end portion (34) being forked to provide two arms (35) and (36) and the ratchet teeth being arranged in two parallel sets, one on each arm, with the teeth staggered in pitch between the two arms. Thus, engagement of the pawl alternately with teeth of one ratchet set and the other, provides step by step adjustment of a closer pitch than the set pitch of the ratchet teeth. <IMAGE>
Patent GB-2005278-A (GB)
Title: Rubber-chlorinated polyethylene blend
IPC: B29D29/06
Filed: 1978-09-22
Abstract: There is disclosed a rubber mix for use in the production of conveyer belts having textile reinforcing inlays, which mix contains 5 to 50% of chlorinated polyethylene additive, calculated on the base polymer, having a chlorine content of from 28 to 48%. The additive assists flame- retardancy and adhesion to the textile. The mix may additionally comprise lead oxide and magnesium oxide, the proportion of magnesium oxide being from 10 to 30%, calculated on the chlorinated polyethylene.
Patent GB-2007924-A (GB)
Title: Plug and socket electrical connector
IPC: H01R13/658
Filed: 1978-09-27
Abstract: A plug-and-socket electrical connector comprises a socket containing two parts positioned axially the one behind the other, the front part, nearest the plug, being an insulating bush holder 6 containing contact bushes 15, each bush 15 being symmetrically double-ended with two bores facing in opposite directions, the bushes 15 being contained removable in the bush holder 6 so that each bush 15 can be withdrawn from the bush holder 6 and then reinstalled reversed in position through 180 DEG , or removed and replaced by a new bush. The back part, furthest from the plug, is an insulating pin holder 5.2 containing contact pins 12. The pin holder 5.2 is a replica of a pin holder 5.1 contained in the plug of the connector. The pins 12 of the pin holder 5.2 contained in the socket occupy the back bores, furthest from the plug, of the double-ended bushes 15. <IMAGE>
Patent GB-2011784-A (GB)
Title: Fire-fighting foams
IPC: A62D1/02
Filed: 1978-12-18
Abstract: A hydrolysed or solubilised protein is reacted with a fluorochemical compound containing a terminal aliphatic perfluorocarbon group of at least three carbon atoms to form a reaction product of which the aqueous solution is foamable, the resulting foam being useful for fighting fires on liquid hydrocarbons and on water- miscible liquids. For producing a fire- fighting foam, the reaction product usually will be mixed with fluorochemical and/or hydrocarbon surface active agents or added to conventional protein or fluoroprotein foam compositions. A preferred reaction product is that between hydrolysed collagen (gelatin) and a fluorochemical sulphonyl chloride wherein the perfluorocarbon group is a branched-chain perfluoroalkenyl group which is the residue of an oligomer of tetrafluoroethylene or hexafluoropropene.
Patent GB-2038085-A (GB)
Title: Random access memory cell with polysilicon bit line
IPC: H01L23/52
Filed: 1978-12-19
Abstract: A data storage cell for use in dynamic random access semiconductor memories, comprises a MIS capacitor 1,2 and a MOSFET 2-5 whose source 5 is connected to a bit line 8 formed of a layer of polycrystalline silicon. A greater fraction of the total cell area is thus made available for data storage and the bit line to substrate capacitance is reduced in comparison to conventional data storage cells. <IMAGE>
Patent GB-2009037-A (GB)
Title: A Portable Sawmill
IPC: B27B15/02
Filed: 1978-12-22
Abstract: A horizontal bandhead 1 is supported by a wheeled trolley 14 rolling on the log to be planked, the wheels 15 having tapered peripheries which resist skidding sideways under the influence of cutting forces. The trolley is pivotable about an axis 13 and can move vertically relative to the bandhead, the vertical motion being associated with a constant force mechanism urging upwards the bandhead, with a force balancing its weight. For safety, the drive torque may be limited, and the bandsaw tension may be automatically released and a brake 27 applied on the bandsaw. During a first cut from a rough log, the trolley is allowed to rise, fall and pitch on irregularities. However, for subsequent cuts on the flat log surface, the trolley is prevented from moving vertically and pitching and merely guides the band head along the log. <IMAGE>
Patent GB-789356-A (GB)
Abstract: 789,356. Regulating switches; fluid-actuation of switches. KUHN, A. March 26, 1956 [March 24, 1955], No. 9307/56. Class 38 (5). An adjustable resistance comprises a number of parallel contact strips arranged in a circle, with the length of the strips increasing from one strip to the next, contact springs movable axially along the strips and displaceable thereonto, and a number of resistances (one per contact strip), one end of the resistances being connected to a common terminal and the other ends each being connected to one of the contact strips. The contact springs 4 are secured to a conducting ring 5 carried by an insulating ring 6 and connected to a terminal 17 by a pigtail 18. Normally the springs 4 engage insulated contacts 21 but are displaceable axially on to strips 2 which are carried by a fixed insulating sleeve 1, the upper ends of the resistances 13 and the strips 2 being connected together, the longest strip being connected to the highest value resistance and so on. The lower ends of the resistances are connected to a ring 14 and a terminal 16. The ring 6 is secured to a sleeve 12 slidable on a fixed tube 11, the sleeve 12 being connected to an operating member 27 by a pin 28 passing through a slot 29 in the tube 11. The member 27 is connected by a bolt 26 to a rod 24 in turn connected by a pin 23 to links 22 and levers 19 which are moved counter-clockwise, Fig. 1, to actuate springs 4 against a return spring 30. The bolt 26 may be actuated by a Bowden cable (Fig. 3, not shown), or member 27 may be raised by a piston 31.
Patent GB-2039263-A (GB)
Title: Improvements in and relating to motor vehicles
IPC: B60P1/02
Filed: 1979-01-13
Abstract: This invention concerns aircraft commissary vehicles having a container (18) which can be elevated relative to the chassis of the vehicle (12) by means of a scissors action elevating mechanism having two pairs of struts (28, 30) located on opposite sides of the chassis and a ram (20) acting between the chassis and the underside of the container or between the two pairs of scissors action struts. Elevation of the container (18) causes the feet (42) at the rear end of the struts (28) to move forwardly. A stop (46), Fig. 2, not shown in the form of a peg can be lifted into an elevated position in advance of the rear stops (44) on the chassis so that as the container (18) is lowered the feet (42) engage the stop (46) thereby inhibiting the complete lowering of the container (18). The feet (42) include rollers (70), Fig. 4, not shown, which are held captive on a rail (38) forming part of the chassis member (12). (Fig. 1) <IMAGE>
Patent GB-2016598-A (GB)
Title: A bladed rotor with variable-pitch blades
IPC: F01D7/00
Filed: 1979-02-28
Abstract: The rotor blades 1 can be rotated about the axes of pivots 2 relative to the rotor by a drive motor incorporated in the rotor which drives means 2, 3, 4 for effecting rotation of the blades 1, the drive motor being an electric motor 9 supplied with induced electric current or a fluid-driven motor. A brake 8 may be provided. The motor may be the motor of a pump, compressor or hydraulic turbine or a screw for propelling, supporting or steering ships, submarines or aircraft. <IMAGE>
Patent GB-2018434-A (GB)
Title: Measuring temperature
IPC: G01K7/02
Filed: 1979-03-30
Abstract: In a temperature measurement system, a thermocouple 1 and a reference voltage source 2 in turn supply voltages via solid state switches 4 to the centre-tapped primary winding of a transformer 6. The output voltages of the transformer secondary winding are applied via an analogue-to digital converter 10 to a crystal-clock-regulated digital processing unit 11 that obtains the difference of positive and negative voltages derived from the thermocouple signal, and positive and negative voltages derived from the reference voltage, for subsequent ratiometric processing. The switches 4 are operated by a switch control unit 3 that responds to signals arriving via electrically-isolating transducers 5 from switch control latches 8 that receive switch control outputs from the digital processing unit 11. <IMAGE>
Patent GB-2021058-A (GB)
Title: Method and device for enabling articulated vehicles to turn with a small turning radius
IPC: B62D11/20
Filed: 1979-05-21
Abstract: The turning radius of an articulated vehicle is determined by, amongst other things, the distribution of the weight of the vehicle on the ground. An articulated, tracked vehicle 10<1> is now provided with a hydraulic cylinder unit 22 coupling the front vehicle unit 11 to the rear vehicle unit 12 in addition to the conventional pivotal coupling 30. The overall length of the hydraulic cylinder unit 22 is shortened to tilt the vehicle units 11 and 12 and thus re-distribute the weight so that it is concentrated in the central region of the vehicle 10<1>. The inside vehicle tracks 16 and 18 are locked and the outside tracks used as the effective driving means so that a turn on a small radius is carried out. The cylinder unit is connected to the oil supply system of the vehicle. <IMAGE>
Patent GB-2049894-A (GB)
Title: Tuyère base construction
IPC: F27B15/10
Filed: 1979-05-24
Abstract: A self-supporting ceramic tuyère base or distributor plate made of refractory compressed material with tuyères (17, 18) disposed therein, the base being braced by refractory walls and being subdivided into lower support plates (10, 11) having an expansion joint (21) therebetween and, lying thereon, cover plates (1,2) having an expansion joint (22) therebetween, the lower support plates (10,11) and the cover plates (1,2) being arranged offset providing staggering of the expansion joints (21,22). Heat-resistant imbricate sheets (14,15) may be arranged between the plates (10,11) and the plates (1,2) and the tuyères (17,18) may have sheet-metal plates (19,20) fitted over them. The tuyère base is particularly useful in a fluidised-bed furnace. <IMAGE>
Patent GB-2028365-A (GB)
Title: Heavy Duty Liquid Detergent Compositions
IPC: C11D3/42
Filed: 1979-08-17
Abstract: Pourable, heavy-duty, built liquid detergent compositions, comprising in an aqueous base:-   (a) at least one anionic detergent including an alkoxysulphate salt of an alcohol, each said anionic detergent being water soluble; (b) at least one optical brightener agent or soluble dye selected from:-   (i) a N,N'-Bis[arylamino- alkylaminotriazine]diamino- stilbene disulphonic acid, or its salts; (ii) N,N'-Bis[di(arylamino) triazine] diaminostilbene disulphonic acid, or its salts;   (iii) a Bis (sulphostyryl) biphenyl, or its salts;   (iv) a Bis (aryltriazol) stilbene sulphonic acid, or its salts;   (v) a Naphthyltriazole-stilbene sulphonic acid or its salts;   (vi) soluble dyes substantive to common fabrics; and     (c) one or more conventional detergent builders.   The compositions exhibit long-term stability without showing any substantial alteration in visual appearance.
Patent GB-2032658-A (GB)
Title: Regulated deflection system e.g. for television receivers
IPC: H04N3/185
Filed: 1979-09-21
Abstract: The trace switch 33 of a horizontal deflection circuit 34 is coupled to a secondary winding 23b of a flyback transformer 23. The primary winding 23a is coupled to a source of energy B+ and a regulator switch 24. A control circuit 42 varies the phase angle of the regulator switch 24 in accordance with an energy level of the deflection circuit 34. A regulator commutating inductance 28 in combination with a commutating, and tuning capacitance 29 controls the duration of conduction of the regulator switch 24. The capacitance 29 independently tunes with a flyback transformer winding 23a to transfer energy from the source B+ in a resonant manner. <IMAGE>
Patent GB-2057529-A (GB)
Title: Building panels and building constructions
IPC: E04G15/06
Filed: 1979-09-21
Abstract: The panel comprises a water- impervious first rectangular sheet 11, a thicker, shorter and narrower second sheet 12, preferably polystyrene foam, and a third sheet 13 that is thinner than second sheet 12 and of the same height and width as first sheet 11. Second sheet 12 adheres to and is sandwiched between the first and third sheets, and a U-section member 14, preferably sheet metal, is affixed to each side edge of the second sheet along its full height and opens outward to engage a similar U-shaped member of an adjacent panel in order to secure the two panels together with the respective first and third sheets of the panels abutting and flush with one another. The panels may be arranged between a floor ridge member 22 and a top plate 23, each of 22 and 23 fitting between sheets 11 and 13, and 23 being connected to 22 by tie-rod 24 through a U-member 14. <IMAGE>
Patent GB-2032690-A (GB)
Title: Enveloping electrical components
IPC: H01G9/08
Filed: 1979-09-25
Abstract: An electrical component such as a tantalum capacitor (1) with axial lead wires (2, 3) is in such a way dipped into a bath (4) of epoxy resin that the component itself and one (2) of the lead wires are coated with the viscous compound. Thereafter the epoxy-resin-coated lead wire is dipped into a bath (7) of tin solder. The epoxy resin enveloping the lead wire (2) settles out on the surface of the tin solder; at the same time, the wire is retinned. <IMAGE>
Patent GB-2060492-A (GB)
Title: Four-color Halftone Printing Process for Objects having Curved Surface
IPC: B41M1/40
Filed: 1979-10-04
Abstract: Four-color halftone offset printing onto objects having a curved surface by transferring images of four inks, having a difference of at least 1 in tackiness value from each other, from four blocks onto two different transfer areas provided on a blanket 3 so that an image 4 of an ink having the highest ackiness value and an image 5 of an ink having the secondarily high tackiness value are transferred onto the first transfer area in that order and an image 6 of an ink having the thirdly high tackiness value and an image 7 of an ink having the lowest tackiness value are transferred onto the second transfer area in that order, and then transferring the images on the first transfer area and the images on the second transfer area in order onto the object having a curved surface. <IMAGE>
Patent GB-2045418-A (GB)
Title: System for the recovery of heat from waste gases
IPC: F22B1/18
Filed: 1979-11-20
Abstract: A system for the recovery of heat from waste gases includes a plurality of conduits 3 for waste gas discharged from one or more thermal sources of such gas (e.g. a thermal treatment furnace 1), a plurality of heat exchangers 4 each being connected to one of the waste-gas conduits and to a circuit (e.g. conduits 8) for a working liquid, which is thereby heated by the waste gas to produce e.g. hot water, superheated water, or steam. The liquid flow may traverse the plurality of the heat exchangers 4 in parallel (e.g. Fig. 1) or in series (e.g. Fig. 2) or parallel flows of the liquid may each flow in series through a group of the heat exchangers (e.g. Fig. 3). The liquid circuit may include a vapourizer (e.g. 14 Figs. 4 to 7) delivering steam to a turbine or to a heat exchanger in which water is superheated. Where the working liquid is a diathermic liquid, other than water, it may pass through a heat exchanger in the vapourizer 14 to vapourize the water therein and produce said steam. <IMAGE>
Patent GB-2039790-A (GB)
Title: A moisture-permeable waterproof coated fabric and method of making the same
IPC: D06N7/06
Filed: 1979-11-30
Abstract: A moisture-permeable waterproof coated fabric having a microporous polyurethane layer is obtained by the so-called wet coagulation method using as a coated solution a polar organic solvent solution containing 8 to 25% by weight of a polyurethane elastomer, 0.1 to 10% by weight of a water repellent agent, 0.2 to 3% by weight of polyisocyanate and 1 to 8% by weight of a nonionic surfactant. Suitable water repellent agents include carboxylic acid complexes of chloro and chlorohydroxy aluminium and chromium compounds.
Patent GB-2037390-A (GB)
Title: Fixing device and tool therefor
IPC: F16B23/00
Filed: 1979-12-19
Abstract: A security fixing device comprises a threaded portion 2 and a head portion 1. A blind aperture 4 is formed in the head, this aperture being offset from the axis 5 of the device. In order to rotate the device in order to secure or release same, a hand tool of complementary shape is provided. The tool comprises a head portion 6 in which is formed a shallow aperture 8 having an offset pin 9 extending from the bottom thereof for co-operation with the bore 4. Application of the invention to a nut and to a grub screw is also described. <IMAGE>
Patent GB-2049029-A (GB)
Title: Control for the Drive of a Door
IPC: E05F15/56
Filed: 1980-04-17
Abstract: Control for the drive of a door, which reduces the maximum closing force acting on the door panel, in a predetermined safety region of the path of movement of the door panel, the safety region terminating at a distance from the closed position of the door panel. The distance of the safety region from the closed position of the door panel may fall within the region of elastic deformation of the door seal. If the control serves for a hydraulic or pneumatic drive 1 for doors, which is supplied with a pressure medium by way of a supply line, then pressure switches 9, 10, 11 are provided, which measure the pressure in the driving cylinder and on passing through the safety region, block the supply line when a predetermined upper limit pressure is exceeded and open the supply line when cylinder pressure is below a lower limit pressure. An electric motor drive may alternatively be used. <IMAGE>