baber/WOPTO huggingface dataset:
Patent GB-352507-A (GB)
Title: Improvements in and relating to screw propellers with flexible blades
IPC: B63H1/12
Filed: 1930-04-10
Abstract: 352,507. Screw propellers. MELCHER, F., 146, Geutzgasse, Vienna. April 10, 1930, No. 11447. [Class 114.] Screw propeller blades are formed with a rigid leading edge and with flexible resilient blade surfaces. The leading edge 1 of propeller blade 3 is formed as a gradually tapering arm 4 integral with the boss and is shaped at the rearward edge to form shoulders and may have stiffening ribs 7. The two side-plates 8, 9 are attached to the shoulder on the rib and sprung so that the rear edges are held together resiliently. Apertures 10 may be made in the frame for connecting the hollow interior with the outside. The blade plate 8 projects beyond the following edge of the pressure plate 9 and is provided at intervals along its outer edge with slits 12. Instead of single blade plates laminations may be used and the laminations may be supported by providing distance-pieces at the position of attachment to the main rib. Instead of providing a blade plate with slits it may be built up of a number of narrow metal leaves arranged in juxtaposition. The plates may be of graded tapered thickness to increase their resiliency.
Patent GB-1178633-A (GB)
Title: Improvements in or relating to Temperature Responsive Fluid Pressure Control Valves
IPC: G05D23/02
Filed: 1967-03-10
Abstract: 1,178,633. Valves. DOLE VALVE CO. 10 March, 1967 [8 April, 1966], No. 11468/67. Heading F2V. [Also in Divisions F1 and G3] A valve in an I.C. engine, see Division F1, comprises a closure member 39, moved by a thermal element 32 to control flow through an inlet 34, outlet 36, and ports 42. As the member is moved in response to a rise in ambient temperature, the member cuts off flow between the inlet 34 and outlet 36, and opens the inlet to the ports 42, the inlet opening relative to the ports 42 at the instant the inlet closes relative to the outlet. Movement of the valve is opposed by a spring 43 whose loading can be varied by a screw plate 46. The inlet 34 has an upper port 49, and a lower port 51, Fig. 3, not shown. A bleed port 47 extends through the closure member.
Patent GB-553301-A (GB)
Title: Improvements in or relating to circuit arrangements for electric gas discharge tubes
IPC: H05B41/232
Filed: 1941-09-09
Abstract: 553,301. Supply systems for space discharge apparatus. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Sept. 9, 1941, No. 11556. [Classes 38 (ii) and 38 (iv)] [Also in Group XL] The filament heating circuit of a gas discharge tube includes besides the normal ballast impedance 9 a double-winding choke 8, 13 with one portion on each side of a filament 2 and wound so that as far as the electrode heating circuit through the condenser 14 is concerned its impedance is a minimum. When, however, the electrodes are sufficiently heated and the tube starts, the winding 13 being shunted by the discharge carries less current than the winding 8 and the choke has an effective impedance. A thinner gauge wire may be used for the winding 8 than for the winding 13 and the winding 8 may consist of a few strands of a stranded inductor the major number of which serve for the winding 13. The condenser 14 and ballast choke 9 may be interchanged. A second double-wired choke 8, 13 may be associated with the other terminals of the tube. 'The invention is applicable to any tube comprising conducting bridges between terminals 4, 5 and 6, 7 whereby the circuit becomes interrupted when the tube is not in its holder ; these bridges may be auxiliary discharge paths. Specification 525,133 is referred to.
Patent GB-1125745-A (GB)
Title: Attaching integrated circuits to substrates
Inventor: BEESLEY JOHN
IPC: H01L21/60
Filed: 1966-03-16
Abstract: 1,125,745. Welding by fusion. ENGLISH ELECTRIC-LEO-MARCONI COMPUTERS Ltd. 15 March, 1967 [16 March, 1966], No. 11624/66. Heading B3R. A method of attaching an integrated circuit chip 10 to a plurality of conducting lands 14 on a substrate 13 comprises directing an electron beam through the chip at least in the regions overlying the lands to melt the material of the lands and thereby weld the chip thereto. Suitable material for the lands, with a silicon chip, is a gold-germanium eutectic with 27% germanium. Welding is carried out with the parts in vacuum or an inert atmosphere. The thickness of the chip should not exceed 50 microns in the weld regions which may therefore be provided with recesses 11 of appropriate depth. Welding may be effected with a defocussed beam, preferably with a mask to prevent damage to the active regions of the chip. Alternatively a focussed beam with or without a mask may be caused to scan the chip in a single cycle or a plurality of scanning cycles. The beam may be switched off when not directed at a region to be welded. Damage to the chip by radiation may be minimized by providing a protective coating of e.g. gold on the upper surface of the chip which may also be annealed after welding. In an automatic process the chips are held and located by a jig (20), (Fig. 3, not shown) which also serves as a mask during welding.
Patent GB-1071893-A (GB)
Title: Steam turbine plant including a gas-cooled nuclear reactor
Inventor: SOUTHWOOD JAMES ROBERT MITCHEL
IPC: G21D5/08
Filed: 1965-03-19
Abstract: 1,071,893. Nuclear power plant. NUCLEAR POWER PLANT CO. Ltd., and A.E.I.-JOHN THOMPSON NUCLEAR ENERGY CO. Ltd., [trading as NUCLEAR POWER GROUP]. Nov. 25, 1965 [March 19, 1965], No. 11682/65. Heading G6C. In a nuclear reactor power plant, the turbine is supplied with steam from a heat-exchanger, heated by the reactor coolant gas. A separate turbine drives the gas circulation pump and receives steam from a unit of the heat-exchanger which is separate from that supplying the power turbine and which is mounted near the gas outlet of the exchanger.
Patent GB-595215-A (GB)
Title: Improvements in snares for musical drums
IPC: G10D13/02
Filed: 1945-05-10
Abstract: 595,215. Musical drums. DEANS. C. F., and BUSBY. A. E. May 10. 1945, No. 11694. [Class 88 (ii)] In a snare wire mounting, each snare wire is supported at the spaced edges 13, 14 of a rectangular slot in an angle plate 7. A bridge 9 carries screws 15 to deflect the wires and to vary the tension thereof. Ribs (Fig. 3, not shown) under the bridge present intermediate recesses or sockets to accommodate the wires. The bridge is disposed in the slot in the plate 7 and screws 6 secure both the plate and the bridge to a bracket 3 adjustable relative to the body 5 and the skin 2 of the drum. The curled lip 16 of the bracket 3 may be grooved to maintain the wires in their spaced relationship. The wires may be clamped by a bar 18 screwed to the plate 7.
Patent GB-346989-A (GB)
Title: Improvements in safety razors
IPC: B26B21/30
Filed: 1930-04-14
Abstract: 346,989. Safety razors. EMERSON APPARATUS CO., 171, Tremont Street, Melrose, Massachusetts, U.S.A. April 14, 1930, No. 11748. Convention date, Feb. 26. [Class 30.] In a safety razor the blade 5 is tightly clamped near its cutting edge between hinged gripping members one of which carries an arm which is pressed to clamp the blade, by a screwed plunger associated with the handle. In the form shown in Figs. 2 and 3, a cap part 3 is integral with the razor frame formed by arms 10 terminating in a handle part 11. A guard 2 has ears, alternating with ears on the cap 3, through which passes a pivot pin 4 about which the guard on an integral arm 15 can swing. The arm 15 is locked in the clamping position by a flat plunger 17 having a cam surface 16 acting on a similar surface on the arm. The plunger 17 is moved axially by a screwed sleeve 18 axially restrained by a shoulder 19 and a pinned handle grip 12. The blade has holes engaged by two pins 6 on the guard and there is a recess 21 in the cap to allow clearance for the swinging rearward blade edge. In a modification there is a squared plunger slidable in the internally squared hollow handle 11. The grip 12 is screwed to the handle and acts directly on the enlarged lower end of the plunger. In a further modification having a toggle-like lock, the guard is fixed. The cap is movable and the arm which it carries is pivoted to a further arm directly thrust for clamping by the handle grip which is threaded to the handle.
Patent GB-376400-A (GB)
Title: Apparatus for constructing the foundations of pneumatic tyres
IPC: B29D30/34
Filed: 1931-04-21
Abstract: 376,400. Tyre-making machines. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, London, WILLSHAW, H., and BROADBENT, F. G., of Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. April 21, 1931, No. 11786. [Class 144 (i).] In a machine for making tyre casings of the kind in which a strip of cord &c. material is wound obliquely about a pair of spaced bead wires, the winding is effected by a separate electric motor which moves, with the material, in an ovate path around the travelling bead wires. The traverse of the wires may be effected by electrically-operated or other means, and is synchronized with the fabricwrapping device. In the apparatus shown, the bead wires 3 are mounted on two sets of rollers 4, 5, the rollers 4 being driven from an electric motor 13, and the rollers 5 being adjustable, for tensioning the wires, by means of a pressure-fluid cylinder 17. The fabric-supply spool 41 is carried on an arm 27 projecting from a plate 26 which is fitted with rollers 25 engaging rails 23, 24 on a fixed frame 20. The plate 26 also carries an electric motor 30 the spindle of which is geared to engage a rack on the frame 20. The latter is provided with' a removable segment to permit assemblage and withdrawal of the work.
Patent GB-1183785-A (GB)
Title: Improvements in Doors.
IPC: E06B3/82
Filed: 1968-03-12
Abstract: 1,183,785. Door panel structures. CENTROPAL A.G. 12 March, 1968 [12 July, 1967], No. 11899/68. Heading E1J. A door panel or wing comprises a pair of sheet metal panels 2, 3 forming a compartment bounded by overlapping marginal portions 44, 46 bent at angles, e.g. a right angle, to the central portion, the portions 44, 46 being bonded together by adhesive therebetweeen and the compartment containing a filler material of a honeycomb or other cavitycontaining structure bonded to the panels. The panel 2 is shaped to define a moulding 44 containing filler material and the panel 3 is formed with a clamping flange 48 and a cushion strip of resilient material 49 of U- shape in section has one arm of the U- clamped against the moulding by the flange 48.
Patent GB-1267773-A (GB)
Title: Articulation arrangement for a motor vehicle
Inventor: KOKKOLA SEPPO ILMARI
IPC: B62D53/02
Filed: 1970-03-12
Abstract: 1,267,773. Articulated vehicles. FISKARS A.B. OY. 12 March, 1970 [12 March, 1969], No. 11900/70. Heading B7H. In a joint assembly for permitting the two sections 10, 11 of an articulated vehicle to swivel about a vertical axis and oscillate about a longitudinal axis relative to one another, the pivot means accommodating oscillation about the horizontal axis comprises a slide member 2 which is pivotally mounted on a boss 6 carried by a joint frame 1 and slidably engages the frame 1 at a location spaced from the pivot axis through bearing elements 8. A vertical pivot pin 3 permits swivelling about a vertical axis for steering purposes. The bearing elements 8 may have bearing surfaces which are supported on an elastic substrate and provide a frictional resistance to oscillation for improving the stability of the vehicle. An opening through the boss 6 accommodates a transmission shaft 15 connecting driven axles 13, 15 on both sections 10, 11.
Patent GB-636030-A (GB)
Title: Improvements relating to cored solder
IPC: B23K35/02
Filed: 1948-04-30
Abstract: 636,030. Soldering. ENTHOVEN & SONS, Ltd., H. J., and GUEST, E. F. April 30, 1948, No. 11903. [Class 83 (iv)] A solder stick having a single core 2 of flux material has a longitudinally seamless wall of non-uniform thickness and of externally circular form in section. The core space is preferably geometrically regular and may be star-shaped, square, triangular or stellar with rectangular arms, Fig. 5 (not shown), and may be longitudinally corrugated or fluted and spiralled. Extruding.-The solder may be extruded around a nozzle externally conforming to the cone section, simultaneously with fluid flux through the nozzle and be reduced in diameter as required. Specification 605,110 is referred to.
Patent GB-1532115-A (GB)
Title: Elastomeric compositions
IPC: C08G14/00
Filed: 1977-03-21
Abstract: 1532115 Elastomer compositions ASHLAND OIL Inc 21 March 1977 [22 March 1976] 11912/77 Headings C3M and C3R Unvulcanized curable elastomer compositions comprise as tackifier 1-5% of a p-alkylphenol/ aldehyde condensate having o to the phenolic hydroxyl groups substituent groups R-CH 2 R where R is morpholinyl or where R<SP>1</SP> is H or alkyl, the alkylphenols having C 1-24  alkyl groups. The tackifiers may be prepared by reacting the phenol and aldehyde or a novolac derived therefrom with morpholine or a dialkanolamine, or a methylol derivative thereof. Examples describe tackifiers derived from p-t-butyl and p-t-octyl phenols, formaldehyde and morpholine or diethanolamine.
Patent GB-634641-A (GB)
Title: High frequency circuits
IPC: H03F1/16
Filed: 1946-04-17
Abstract: 634,641. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. April 17, 1946, No. 11913. Convention date, April 17, 1945. [Class 39 (i)] [Also in Group XL (c)] A coaxial line amplifier circuit comprises a triode 1, the grid 2 of which serves as an electrostatic shield between anode and cathode, the cathode 3 being connected to the inner conductor 7 of one coaxial line, the anode 4 to the inner conductor 8 of another coaxial line and the grid being coupled to the common outer conductor 9 through a condenser 10, the relationship between its capacity, the interelectrode capacity values, the impedance of the cavity resonator and the operating frequency being adjusted to give neutralization conditions preventing anode feed-back. A cylindrical line or bell 13 which is adjustable telescopically and shorting plungers 16, 17 permit tuning of the resonators. The driving voltage may be applied directly between filament and grid or, as shown in Fig. 2, through a coaxial line 18 connected at a point 20 on the line 7 which is a distance from the cathode equal to a multiple of half-wave lengths at the operating frequency. A quarterwave length stub 21 prevents disturbance of the cathode resonator by the coaxial line 18. In a further modification, not shown, the line 18 is applied to a matching coaxial line so that the driving voltage effectively appears at a point a quarter of a wavelength from the grid. The inner conductor of the line is a continuation of the cathode conductor, the outer conductor of the line having the same diameter as the cathode conductor.
Patent GB-997514-A (GB)
Title: Expansion joints for pipelines
IPC: F16L55/04
Filed: 1964-03-20
Abstract: 997,514. Expansion joints. UNITED STATES ATOMIC ENERGY COMMISSION. March 20, 1964 [May 31, 1963], No. 11959/64. Heading F2G. An expansion joint comprises inner sleeves 8, 10 in opposed axial alignment and spaced apart, the sleeve 10 having an extension 16 attached thereto and slidably disposed concentrically about the sleeve 8, and an outer sleeve 12 attached to the sleeve 8 arid slidably disposed concentrically about the sleeves 8 and 10 and the extension 16. A balance chamber 18 is formed by the sleeves and extension and the sleeve 10 has at least one hole 20 communicating with the interior thereof, and the sleeves 8 and 12 and the extension form a leak-off reservoir 30 which communicates with the atmosphere via a conduit 32 having a regulating valve 34 disposed thereon. Leakage channels 40, 42 extend from the chamber 18 and the interior of the sleeves 8, 10 to the reservoir 30. As shown, sealing rings are arranged in the channels 40, 42 and between the sleeves 10 and 12; the sleeves 8, 10 are secured to pressure vessels 4, 6, and the surface areas 36, 38 are so proportioned as to balance the thrust exerted by thermal expansion of a pipe-line and pressure of the fluid carried thereby.
Patent GB-861096-A (GB)
Title: Improvements relating to testing equipment for fluid pressure gauges
Inventor: BRISTON FREDERICK ARTHUR
IPC: G01L27/00
Filed: 1958-04-15
Abstract: 861,096. Testing pressure gauges. BARNET INSTRUMENTS Ltd. June 24,1959 [April 15, 1958], No. 11985/58. Class 106 (2). Testing equipment for fluid-pressure gauges comprises a piston 4 mounted vertically in a cylinder 3 and carrying a weight pan 5, the pressure-gauge 12 to be tested being attached to a branch passage 10, and the gaseous fluid used for testing passing through a pressureregulator 17 and a control-valve 19 on its way to the cylinder 3. A needle valve 13 for venting the system to atmosphere is provided, and so is a pressure-gauge 9. By this means, pressuregauges can be tested under gaseous instead of hydraulic fluid. In use, fluid for testing, e.g. air, is admitted to the system through the regulator valve 17, which is set to suit the pressure range required, suitable weights are added to the pan 5, and the needle valve 19 opened further until the weights are lifted and the pan can be freely spun. The gauge is then calibrated, the pressure being varied as required. At the conclusion of a test, the valve 19 is closed and valve 13 opened to vent the system to the atmosphere. The device is mounted on a base-board which may form part of a carrying case, thus providing a portable self-contained unit.
Patent GB-1155509-A (GB)
Title: Roof Rack for Cars
Inventor: JOOS ERIC
IPC: B60R9/045
Filed: 1968-03-12
Abstract: 1,155,509. Vehicle roof racks. ERIC JOOS A.B. 12 March, 1968 [21 March, 1967], No. 11996/68. Heading B7J. A collapsible vehicle roof rack comprises a frame structure formed of side pieces pivotally connected by parallel cross-pieces, said side pieces consisting of upper and lower tubes 3, 4 connected by U-tubes 5 and the cross-pieces consisting of end tubes 10, 11 connecting upper tubes 3 and further tubes 6-9 connecting the lower tubes 4. The straight tubes are coated in plastics material and the ends thereof protected by plastics sleeves 15. The pivots are formed by pivot bolts extending through the tubes, the U-tubes 5 being held in place by said bolts. The connections between the end lower cross-tubes 6, 9 and the tubes 4 are somewhat different in that the pivot bolt 17, Fig. 6, extends between a bushing 16 at the end of the cross-tubes and the tubes 4. Arms 24 by means of which the rack is attached to the vehicle guttering slide within the cross-tubes and are held in place by lock bolts 22. The guttering clamp 27 is connectable to arm 24 by means of bolt 26 passing through one of a set of holes 25. In a modification the cross-tubes carrying the clamps are separate from the remainder of the rack which is connectable thereto by hooks on the ends of the pivot bolts connecting tubes 6 and 9 with tubes 4. In a further modification the clamps are pivoted to brackets secured to the side pieces.
Patent GB-1033464-A (GB)
Title: Thermoplastic material
IPC: C08L27/06
Filed: 1964-03-23
Abstract: Transparent, self-extinguishing thermoplastic compositions comprise a mixture of 35 to 55 parts by weight of a methylmethacrylate homopolymer or copolymer with styrene, a -methyl styrene, an acrylic or methacrylic ester or acrylonitrile and 65 to 45 parts by weight of a vinyl chloride homopolymer or copolymer with vinyl acetate, vinylidene chloride, an acrylic, methacrylic, maleic or fumaric ester or acrylonitrile. The compositions may also comprise polyvinyl chloride stabilizers, e.g. dibutyl tin maleate; ultra-violet light absorbers, e.g. hydroxyphenylbenzotriazole; antioxidants, e.g. 4,41-thio-bis-(6-t-butylmetacresol); blueing compounds, e.g. anthraquinone derivatives; lubricants, e.g. stearic acid; other polymers, e.g. copolymers of acrylonitrile with styrene or a -methyl styrene; pigments; fillers; and plasticizers, e.g. trichlorethyl phosphate.  The compositions are said to be self-extinguishing, highly transparent, and weather and chemical resistant, and may be used for making plane or corrugated sheets for roofing, skylights and wall panels, and pipes.  Examples describe compositions comprising polyvinyl chloride, dibutyl tin maleate, stearic acid, hydroxyphenylbenzotriazole, 4,41 - thio - bis - (6 - t - butyl metacresol) and an anthraquinone blueing agent together with (1) a vinyl chloride/vinyl acetate copolymer and polymethyl methacrylate; (2, 5, 7 and 8) polymethyl methacrylate; (3) polymethyl methacrylate and a styrene/acrylonitrile copolymer; (4) a methyl methacrylate/methyl acrylate copolymer; and (6) a methyl methacrylate/methyl acrylate copolymer and trichlorethyl phosphate.
Patent GB-1145781-A (GB)
Title: Apparatus and method for determining the average amplitude of a plurality of randomly occurring electrical pulses
IPC: G01N15/12
Filed: 1966-03-18
Abstract: 1,145,781. Measuring mean size of particles; pulse amplitude measurement. COULTER ELECTRONICS Ltd. March 18, 1966 [March 22, 1965], No. 12177/66. Headings G1N and G1U. [ Also in Division H3] The mean size of particles (e.g. blood corpuscles) passing through a Coulter detector is automatically derived by a circuit which stretches each pulse into the next succeeding pulse to form a monopolar signal of substantially histogrammic configuration, the levels of which are proportional to the sizes of the respective particles giving rise to them, and the monopolar signal is averaged to provide an indication of the mean particle size. In order to allow for coincidences (two or more particles passing at the same time through the aperture) which would tend to make the measurement too high, part of each level of the histogrammic signal may be removed. As shown in Fig. 11, a string of pulses from a Coulter detector 130 are amplified and a capacitor C in a memory circuit 144 successively stores the peak value of each pulse to form the histogrammic signal which is then amplified and integrated over a given time. The arrival of each pulse is detected by an adjustable low threshold circuit 87 which triggers a shorting circuit 110 to discharge the capacitor C which is then charged to the peak voltage of the pulse. A leading edge detector 93 triggers a monostable multi-vibrator 156 which controls the switching of a diode in a loading stage 200 to correct the histogrammic signal for coincidence. The loading signal may instead be applied to the integrator 202 or amplifier 150. Two embodiments without coincidence correction are described. In one, Fig. 2 (not shown), two memory circuits are provided, the second one retaining the peak voltage of the latest pulse during the time interval between the discharging of the first capacitor and its subsequent charging to the peak voltage of the next pulse. In the other arrangement, Fig. 5 (not shown), only one memory circuit is provided and a normally open switching circuit (142) connects the Coulter detector (130) to the memory circuit (144) for a small time interval at the peak of each pulse.