baber/WOPTO huggingface dataset:
Patent GB-1536847-A (GB)
Title: Electrically conductive composite materials
IPC: H01H11/04
Filed: 1976-07-12
Abstract: 1536847 Internally oxidized alloys SQUARE D CO 12 July 1976 [19 July 1975] 30338/75 Headings C7A and D An electrically conductive composite material sutitable for electrical contacts consists of a mixture of silver, not more than 16À07% zinc oxide with optionally up to 6À13% copper oxide. The method of producing the material involves mixing the zinc and silver powders, heating to form a silver-zinc alloy in powder form by diffusion, then heating the Ag-Zn powder in an oxidizing atmosphere at 180‹C to melting point to oxidize the Zn to ZnO, and compacting to the required shape prior to sintering and coining. Production of Ag-Zn-Cu composites involves the mixing of Zn powder with copper oxide powder to give a Zn-cupric oxide mix, mixing this powder with silver powder, heating the mixture in a reducing atmosphere of H, CO, cracked ammonia, burnt natural gas of propane or a CO-H 2  mixture at 200-700‹C to form a Ag-Zn-Cu alloy powder. The powdered alloy is then subjected to internal oxidation by heating in air or oxygen to oxidize the Zn and re-oxidize the Cu. The oxidized powder is then compacted (about 40 t.s.i.) and sintered preferably about 700‹C for 1-2 hours in air, oxygen or an inert gas prior to coining, to improve the density and to finally dimension the article, at about 60 t.s.i. The material so produced has comparable erosion resistance properties to the standard Ag-CdO composite materials but without their toxicity.
Patent GB-872414-A (GB)
Title: Process for the production of peptides
Filed: 1959-09-04
Abstract: Peptides are produced by reacting amino acids or peptides which are protected at the carboxyl group with amino acids or peptides which are protected at the amino group in the presence of a carbodiimide of the formula <FORM:0872414/IV (b)/1> where R is an alkyl, cycloalkyl, aralkyl or aryl group and where at least one of the four groups R is substituted by one or more tertiary and/or quaternary amino groups. The carbodiimides are converted to the corresponding ureas during the reaction and a list of suitable carbodiimides is given.  Examples describe the preparation of carbobenzoxy-glycyl-sarcosyl ethyl ester in the presence of 3-dimethylaminopropyl tert. butyl carbodiimide and 2[(N-morpholyl)-ethyl] tert. butyl carbodiimide and of carbobenzoxy-glycyl-sarcosyl-L-leucine methyl ester in the presence of 3-diethylaminopentyl-4-tert. butyl carbodiimide and 3-dimethylaminopropyl-tert. butyl carbodiimide.
Patent GB-1090157-A (GB)
Title: Improvements in beads for protecting plaster board and the like
Inventor: SALMON HENRY PETER
IPC: E04F13/06
Filed: 1965-07-16
Abstract: 1,090,157. Spiked plates. EXPANDED METAL CO. Ltd. June 17, 1966 [July 16, 1965], No. 30362/65. Heading F2H.  A protective bead for fixing to the edge of dry-walling sheets, comprises tongues 4 which are bent outwards from the surface of the bead and have their tips set back so that they are directed towards but are clear of the inner surface of the bead. In use the tongues are driven into the sheet to fix the bead thereto.
Patent GB-588078-A (GB)
Title: Exhaust gas turbo-charger
IPC: F02C6/12
Filed: 1945-11-13
Abstract: 588,078. Exhaust turbine superchargers. AKT.-GES. BROWN, BOVERI, & CIE. Nov. 13, 1945, No. 30364. Convention date, Nov. 15, 1944. Drawings to Specification. [Classes 110 (i) and 110 (iii)] An exhaust gas turbine drives directly a centrifugal supercharging air-compressor and passes considerably more gas than the air dealt with by the compressor. The leaving angle of the compressor blades is substantially radial and the aerofoil turbine blades cause a deflection of the gas relative to the blades which is less than 35 degrees. The degree of reaction in the turbine blades is more than 0.5.
Patent GB-991317-A (GB)
Title: Foamed polyvinyl resin composition
Inventor: MILLARD JOHN
IPC: C08J9/00
Filed: 1962-08-08
Abstract: Polyvinyl resin foam, e.g. polyvinyl chloride foam, may be produced by heating a mixture of the polyvinyl resin, dicyclohexyl phthalate, di(methylcyclohexyl)phthalate or cyclohexyl methylcyclohexyl phthalate and a blowing agent to a temperature at which the blowing agent boils or decomposes and cooling the product.  The mixing may be carried out at an elevated temperature.  20-40% may be used. The blowing agent may be azodicarbonamide. A stabilizer and an activator for the blowing agent may also be present.  White lead may function as both activator and stabilizer.  The foaming temperature may be 170 DEG  C. The product may be rigid and flame resistant.  In Example (2) the phthalate is a mixed ester of the three methyl cyclohexanols.
Patent GB-433036-A (GB)
Title: Improvements in aircraft propellers with variable pitch and diameter
IPC: B64C11/30
Filed: 1933-11-02
Abstract: 433,036. Variable - pitch propellers. THORNTON, A. A., 7, Essex Street, Strand, London.-(Soc. Anon. Brevetti A.L.I.T. ; 3, Via Volvera, Turin, Italy) Nov. 2, 1933, No. 30475. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 17, 1934.] [Class 114] In variable-pitch propellers in which the blades are screwed on the hub and are subjected to the action of centrifugal full tending to unscrew the blades and increase the pitch against the action of resilient means, the pitch angle and friction coefficient are chosen so that a wide variation in the number of revolutions of the engine is required to start a decrease in the propeller pitch. Thus for the same position of the throttle lever the pilot is able to obtain a larger pitch by first opening the throttle full and then returning it to its normal position. A lower pitch is obtained by first closing the throttle and then returning it to normal. Each blade 2 is rotatably mounted on the hub by means of a radial cylindrical extension 5 in which the blade root is threaded. The root carries a radial tooth 6 which operates with a radial tooth on a sleeve 3 which is rotated relatively to the hub. The rotation of the sleeve produces the deformation of resilient means which balances the action of the centrifugal force. To this end a box 9 is splined on the hub and the rotation of the sleeve is converted into an axial movement of the box through balls 10 working in helical grooves cut in the box and the sleeve 1. The axial motion of the box compresses resilient rings 11 against a ring 13 adjustably screwed on the hub. The movement of the blade relatively to the hub is limited by stops.
Patent GB-695787-A (GB)
Title: Improvements in anticoagulants
Inventor: RICKETTS COLIN ROBERT
IPC: C08B37/02
Filed: 1949-11-28
Abstract: The invention comprises the water-soluble salts of sulphuric esters derived from dextrans of intrinsic viscosity less than 0.04, said esters having 9 per cent or more of sulphur in their sodium salts. The compounds are made by the degradation of high molecular weight dextrans, fractionation of the mixture to remove products whose intrinsic viscosity is 0.04 or more, esterifying the lower fraction with a sulphating agent and converting the ester into a water-soluble salt, e.g. of an alkali or alkaline earth metal.  The ester may have up to 3 sulphate groups per glucose unit and its sodium salt preferably has 14 per cent or more sulphur.  The molecular weight is less than 22,000.  An example is given of the preparation of a suitable ester-salt, using chlorosulphonic acid with pyridine for the esterification and sodium hydroxide for neutralization; the product has 17.15 per cent of sulphur.  Specification 603,571 is referred to. According to the Provisional Specification the dextran may be any whose molecular weight is less than 25,000.ALSO:Anticoagulants for use with blood and plasma consist mainly or entirely of a water-soluble salt of dextran sulphate, the latter being the sulphuric ester of a dextran whose intrinsic viscosity is less than 0.04; the ester has a sulphur content of not less than 9 per cent calculated on its sodium salt.  The ester may have up to 3 sulphate groups per glucose unit, the molecular weight being less than 22,000. A sterile isotonic solution can be made by autoclaving a solution of the salt together with sodium chloride and a buffer, e.g. sodium bicarbonate.  The salt may be of an alkali or alkaline earth metal, especially sodium.  A test is described to ensure that the anticoagulants are non-toxic in vivo.  Specification 603,571 is referred to.  According to the Provisional Specification there may be used any dextran whose molecular weight is less than 25,000.
Patent GB-277836-A (GB)
Title: Improvements in and relating to air ships
IPC: B64B1/40
Filed: 1926-12-02
Abstract: 277,836. Eagles, G., A. Dec. 2, 1926. Cabins. - An aircraft of the heavier than air type is provided with end compartments of conical shape, a central saloon compartment e, and adjacent compartments c and d for the rear and leading operating machines respectively, and an upper deck f which may be covered in and have windows. The navigator's compartment a is provided with windows. Landing sleighs g or spring supported wheels are mounted near the ends of the body.
Patent GB-377522-A (GB)
Title: Pressure-temperature method and apparatus for the control of heating
IPC: F24H9/12
Filed: 1931-11-04
Abstract: 377,522. Thermally-actuated valves. SARCO CO., Inc., New York, U.S.A.- (Assignees of Adlam, T. N. ; 729, West Broad Street, Bethlehem, Pennsylvania, U.S.A.) Nov. 4, 1931, No. 30605. Convention date, Nov. 8, 1930. [Class 135.] A method of controlling the temperature of a heating element or radiator having an inlet and an outlet for the passage of the heating fluid, comprises changing the pressure imposed on the outlet, and controlling the incoming heating fluid according to the change of pressure imposed on the outlet of the heating element. The general arrangement comprises a steam supply pipe 1, and return pipe 2 from which lead supply and return pipes 5, 6 to radiators 4 having pressure-temperature inlet valves A, B and D. An outlet controlling valve E, or a manually adjustable valve C may be provided. The return pipe 2 is connected to a mixing chamber 8 and pump 9 which delivers to a boiler 3. The mixing chamber is supplied with water from a tank 11 which is connected through a surplus pressure valve with the pump 9. A trap 14a returns any condensate in the steam pipe to the return pipe. A pressure regulating valve 15 of the kind described in U.S. Specification 1,185,347 imposes the pressure on the return pipe as determined by the temperature required, so that an increase in temperature at the location of the regulator causes the valve to open and lower the pressure in the return pipe 2, an element 15a being situated at any desired place, and, in connection with another element 15b controlling the valve 15. An increase in pressure tends to open the valves A, B and D and an increase in temperature tends to close them. In one form, Fig. 2, a double seated balanced valve 18 is mounted on a stem 18a which extends through the lower part of the radiator, and is secured to a contractable element 18b containing a vapour and attached to the end of a perforated cylinder 18c. The thermostatic element 18b is thus subjected to the pressure and temperature of the fluid in the radiator. A spring 19 tends to open the valve against the pressure of the corrugated element 18b. Auxiliary means for manually closing the valve comprise a handle 20a actuating through a packless device 20, a bell crank lever 21 bearing on the valve 18. An intermediate coupling in the valve stem 18a permits the right hand portion to slide freely in an opening 18i in the left hand portion, adjustable stop nuts 18j being provided. An outlet valve 26e, Fig. 6, from a radiator may be controlled automatically by the change in room temperature, by being attached to a rod 26c secured to a thermostatic element 26 in a perforated casing 25a, the rod passing through a corrugated member 27 forming a packless connection. The temperature of a radiator or group of radiators may be varied by distant control apparatus comprising valves or separate return pipes.
Patent GB-1192518-A (GB)
Title: Process and Apparatus for the Mechanical Production of Ribbon Bows
Inventor: HAGENBUCH ERNST
IPC: D04D7/10
Filed: 1968-06-27
Abstract: 1,192,518. Bow-tying apparatus. BREITENBACH RIBBON MFG. CO. Ltd. 27 June, 1968, No. 30621/68. Heading B6G. Bows are produced by a process in which a ribbon with its free end clamped to a rotatable clamping member 20 Figs. 5a, 5b and 5c, is drawn up between the clamping member and a pusher member 17 displaceable in relation to the latter by means of a gripping device 23 movable below the ribbon and the single bow thereby formed is pressed and held by the pusher member until a binding thread F clamped to the clamping member secures the formed single bow whereupon the pusher member and the gripping device return to their starting position and after adjustable rotation of the clamping member a further bow is formed in the same manner. Apparatus for tying a continuous ribbon into a bow comprises clamping means for releasably clamping a terminal portion of the ribbon, guide means for movably guiding the ribbon to the clamping means, the guide means including a guide member spacedly adjacent the clamping means, a gripper device for releasably gripping a portion of the ribbon intermediate a terminal portion thereof clamped by the clamping means and the guide member, actuating means for moving the gripper device away from the guide member and the clamping means until the intermediate portion is expanded into a loop having one end secured to the clamping means and another end, a pusher member for pushing said another end against the clamping means, securing means on the pusher member for securing said another end to the clamping means when the pusher member is shifted toward the clamping means, and laying means for laying a binding thread about the secured ends of the expanded loop. After the formation of each single bow the clamping member is rotated stepwise, the angle of rotation of any step being adjustable. The path of the gripping device can be selectively adjusted. The gripping device may move perpendicularly to the clamping member and then for the formation of the single bow is displaced parallel to the axis of the clamping member and finally returned to its starting position on release of the formed bow, thus executing an approximately triangular movement. A central control unit may be provided for controlling the operating sequence of movement for a spool carrying the binding thread, the pusher member, the clamping member and the gripping device. Means may be included for varying the distance moved by the gripper means away from the guide member and the clamping means and for thereby varying the length of the expanded loop. An embodiment of the apparatus is described and illustrated in detail.
Patent GB-1179944-A (GB)
Title: Improvements relating to Telescopic Hydraulic Ram Devices.
Inventor: DANE LEONARD ERNEST
IPC: F15B15/16
Filed: 1967-07-04
Abstract: 1,179,944. Telescopic hydraulic rams. BECKER EQUIPMENT & LIFTS Ltd. July 2, 1968 [July 4, 1967], No.30833/67. Heading F1P. In a telescopic ram comprising a piston 5 slidable in an outer cylinder 1 and having a rod 4 which forms the cylinder for a piston 6, the rod 7 of which may in turn act as a cylinder for a further piston and so on, the annular space(s) 9 between the cylinders are filled with liquid whereby extension of all the pistons and cylinders occurs when liquid is supplied to the outer cylinder through a port 12 in a cylinder end closure 2. At the end of a retraction stroke, projections 6a, 13 on the pistons 6, 5 enter recesses 6b, 11 in the ends of the cylinders 4, 1 to cushion the stroke. A normally closed valve member 17 is disposed in a transverse bore 18 in the projection 13. The valve is opened by abutment with the wall of the recess 11 whenever the ram is fully retracted, and thus if the annular space(s) 9 are not completely full, replenishing liquid is supplied from the recess 11 via a passage 16 in the main piston 5.
Patent GB-1008892-A (GB)
Title: Improvements in and relating to drive transmissions
IPC: F16H45/00
Filed: 1964-08-04
Abstract: 1,008,892. Hydraulic clutches. SOC. ANON. FRANCAISE DU FERODO. Aug. 4, 1964 [Aug. 6, 1963], No. 30846/64. Headings F2C, F2D and F2L. A vehicle transmission includes an hydraulic torque converter or coupling, the connection of whose turbine element with the transmission output member is controlled by a clutch in accordance with the operative condition of the change-speed gear-box, the control mechanism being mounted in the converter or coupling housing and comprising an oil supply reservoir provided with an expansion chamber above it, and preferably also with an air-tight filler plug and with a venting and overspill tube discharging at a point remote from the engine exhaust. In the arrangement shown, the impeller 20 of a torque converter is coupled to the input shaft 10 by a casing 18 and diaphragm 19, and the turbine 21 is connected to a member 22 mounted on a fixed sleeve 24 and also connected to the back-plate 28 of a clutch 16 whose central disc 34 is splined to the output shaft 11. The clutch is operated by a pressure plate 30 in the form of an annular actuator piston whose outer face is engaged by a spring disc 31 and can be subjected to the pressure of oil supplied by an impeller-driven pump 57 through an axial passage 46 in shaft 11. The space between plates 28, 30 is divided into two annular chambers 39, 40 connected by passages 41 in the disc 34. The oil supply is controlled by a solenoid valve 64 in a distributer 53 integral with the converter housing 17, and the lower portion 58 of which serves as the pump reservoir with an upper expansion chamber 70 provided with the filler plug 71 and overspill tube 72. Oil from passage 46 passes over clutch plate 30 into casing 18 and enters the converter working circuit through a peripheral gap 50 between the impeller and turbine, leaving through a second gap 50 between the reactor and turbine, and then entering clutch chamber 40 through non-return valves 15 in backplate 28, the chamber 40 being in communication with an annular passage 52 between shaft 11 and sleeve 24. The solenoid valve 64 is controlled by a pair of switches 67, 68 arranged in parallel, the former being closed when the driver grasps the gear-change lever 14 and the latter when the gear is in neutral. When a gear is engaged valve 64 is in the position shown to supply oil under pressure from passage 54 to passage 46 and the rear of plate 30 to overcome that in chambers 39, 40 and so hold clutch 16 engaged. In neutral valve 64 is positioned so that oil under pressure is fed from passage 55 to space 52 whereby the pressure in chambers 39, 40 disengages the clutch. The openings 41 in disc 34 may be controlled by pivoted members which close the openings under engine-braking conditions. Figs. 7 and 8 (not shown), while the pump delivery valve 61 may be arranged to give a graduated pressure rise for a predetermined speed range above idling, for progressive take-up at starting, Figs. 9 and 10 (not shown).
Patent GB-1002956-A (GB)
Title: Electrolytic cavity sinking apparatus and method
IPC: B23H3/00
Filed: 1961-08-28
Abstract: A method of electrolytically forming a cavity in a workpiece comprises relatively moving the workpiece and a hollow electrode towards each other at a controlled substantially constant rate, feeding electrolyte through the electrode into a gap between the electrode and workpiece at a controlled pressure, maintaining the temperature of the electrolyte supply to the electrode at a substantially constant level above ambient temperature, and applying a substantially constant direct voltage between the workpiece and the electrode, the method being characterized in that the pressure is always controlled to a level above that at which there is a formation of steam bubbles in the electrolyte in the gas sufficient to affect the dimensional accuracy of the cavity to substantial extent.  A rate of relative movement of 0.010-0.800 inch/minute, a voltage of 5-18, a temperature of 100-180  DEG F. and a pressure of 30-300 pounds/inch2 are specified. Fig. 1 shows an electrode 22 in a holder 25 which is advanced by a ram 11.  A workpiece (not shown) is held on a work table 127 <PICT:1002956/C6-C7/1> <PICT:1002956/C6-C7/2> mounted on a vertical slide controlled by a hand wheel 129.  The entire ram assembly can be moved horizontally in the direction towards and away from the viewer looking at Fig. 1 by manual operation of a hand wheel 123. The ram 11 is advanced by a screw 31, Fig. 2, driven by a reversible motor M operating through a variable speed transmission VST, a transmission 57 comprising gearing and electric clutches 65 and 67, a sprocket 55, chain 41 and sprocket 39.  Actuating one or other clutch 65 or 67 moves the electrode in a low or high speed range and further speed adjustment is by operating a control knob 45 of the variable speed transmission.  An electrically operated brake 43 prevents the ram from overtravelling when the clutches are disengaged. Electrolysing voltage is controlled at a console C. Electrolyte is supplied to the electrode 22 from a tank 130 via hose 149, pump 145, filter 157, hose 159, valve 165, hose 27 and the electrode holder 25.  The pressure and temperature of the electrolyte entering the electrode are measured at 169 and 175 respectively. Electrolyte from the work is collected in a pan beneath the table and is returned to the tank. The electrolyte in the tank is heated by an immersion heater 135 controlled by a thermostat 137 or is cooled by water flowing through a cooling coil 151.  The pressure at which the electrolyte is supplied to the electrode is controlled by adjustment of valve 165 and a valve 161 in a passageway returning to the tank. A pressure gauge is provided at 163.  A dial 23 indicates the depth to which a cavity has been sunk and means, Figs. 3 and 4 (not shown) are provided for presetting the depth to which the cavity is to be formed. Specification 943,101 is referred to.
Patent GB-684129-A (GB)
Title: Improvements in and relating to boxes
IPC: B65D21/06
Filed: 1950-12-19
Abstract: 684,129. Boxes. ERTNER, A. C. Dec. 19, 1950. No. 30941/50. Class 18 To facilitate stacking of a number of collapsable boxes, cross bars 18 are provided on each box on which an upper box is supported, the bars being hingedly connected to the end walls 2 by cranked arms 19. Clips 25 are secured centrally to the bars 18 and have upturned ends 24 which serve as stops to limit the longitudinal movement of the upper box. In addition the arms 19 are cranked at 21 so as to form an upstanding portion which prevents undue sideways movement of the upper crate. The clip 25 may serve to retain a flanged lid 13 in position when the cross bar is swung to the side of its end wall, the stop 24 engaging over the edge of the lid to do so. The box has a base hinged to one side, the remaining sides being hinged to each other and having flanged lower edges 6 which interengage with the corresponding edges 10 of the bottom when the box is erected.