baber/WOPTO huggingface dataset:
Patent GB-179195-A (GB)
Title: Improvements in fluid pressure brake mechanism
IPC: B60T15/54
Filed: 1922-05-01
Abstract: 179,195. Seguin, E. May 2, 1921, [Convention date]. Fluid-pressure.-In fluid-pressure brakes in which an automatic valve is provided to prevent release of the exhaust from the triple valve when the air pressure in the auxiliary reservoir is low, the valve is arranged so that it opens at a pressure greater than that at which it closes. The pressure in the auxiliary reservoir is thus built up before the brakes are released so that several consecutive applications of the brakes may be made. Fig. 1 shows the valve a in section, and Fig. 2 shows its assembly in connection with the train pipe D, the distributor C, the brake cylinder B, and the auxiliary reservoir E. The top a' of the valve is connected by a pipe A to the air escape from the distributor C, a valve F being provided to render the valve a inoperative when required. The bottom a<2> of the valve a is connected by a pipe A<1> to the main leading from the auxiliary reservoir E. The valve a comprises a spring-pressed valve d adapted to be actuated by the rod c<1> of a spring-pressed piston c. This piston is fitted with a cup-leather c<2> and a cup c<3> adapted to contact with a gasket f at the bottom end of the stroke. A groove a<11> permits the escape of the air trapped between the leather c<2> and the cup c<3>. The valve a is provided with an off-set portion b containing a spring-pressed blow-off valve e. This valve is set to blow off at different pressures, according to whether the vehicle is loaded or unloaded, by an eccentrically-mounted handle h. In operation, if the pressure in the auxiliary reservoir E is fairly high, the piston c is pressed up, and its rod c<1> keeps the valve d open, thus permitting exhaust air to escape by the ports a8. If, however, it is desired to recharge reservoir E, the valve d being closed, and the distributor C being in the air-release position, the released air will be unable to escape to atmosphere unless its pressure is sufficient to lift the valve e. The area of the piston c<3> being less than that oi the cap c<2>, a greater pressure is required to lift the piston c than to keep it up, thus securing that the air in the brake cylinder shall not be released until the pressure in the auxiliary reservoir has been increased sufficiently to ensure safety.
Patent GB-568367-A (GB)
Title: An improved motor, prime mover or pump
IPC: F02B53/00
Filed: 1943-07-27
Abstract: 568,367. Rotary internal-combustion engines. MILES AIRCRAFT, Ltd. (formerly PHILLIPS & POWIS AIRCRAFT, Ltd.), and HEAL, L. C. July 27, 1943, No. 12241. [Class 110 (ii)] The engine may have a single working- chamber 2 with an abutment 7 pressing on the periphery of an eccentric rotor 5, but preferably has two chambers 2, 2a, with a common abutment 7. The rotors are 180‹ out of phase, and geared together for opposite rotation. Inlet and outlet ports 8, 9, are provided, and valves 20, 20a, control fluid flow. Rings, 12 supported on bearings may surround the rotors. The engine may use spark-ignition or compression-ignition. A small clearance may be allowed between a rotor and its cylinder bore. A doubleacting piston 13 is acted upon alternately by gases fired in firing chambers 14, 14a, to supply fuel gas under pressure to the opposite chambers. The semi-rotary sleeve valves control the admission of compressed gas to the firing chambers, and the admission of the gases after firing, to the working-chambers. The fired gases act upon the end of a rod 17 to actuate the piston 13. Gas is admitted by valves 19, 19a, into the cylinder 15. Intercooling may be used between the compression and engine stages. The ends of the abutment may be shaped to improve the sealing effect and may embody roller bearings. The bores of the valves 20, 20a, may be scavenged. The Provisional Specification states that the ends of the abutment may comprise graphite impregnated strips 5, and the inlet valve may be subject to barometric control.
Patent GB-259856-A (GB)
Title: Improvements in or relating to power presses for smooth pressing or embossing leather or other flexible sheet material
IPC: B30B15/06
Filed: 1926-05-12
Abstract: 259,856. Jackson, L. Mellersh-, (Sheridan Co., T. W. & C. B.). May 12, 1926. Embossing; scoring.-A power press for smoothing and embossing flexible sheet material, e.g. leather hides, comprises an upper press member 14 mounted below a frame top piece 5, and a lower press member 8 with toggle or other raising mechanism 11, the upper member being mounted to recede towards its support while resisting the pressure, and being compelled to shift sideways by a system of links 16 and thus iron the material. Separate guides 6 spaced away from the frame uprights 4 support the member 8, thus allowing room for the leather to overhang the support. The member 14 is pressed away from its support 15 by a series of springs, and may be heated electrically. The pressure on the leather may be measured by a gauge 30. Alternatively, the lower member 8 may be mounted to recede towards its support.
Patent GB-380755-A (GB)
Title: Improvements in and relating to electric flashlight devices
IPC: F21L4/00
Filed: 1932-04-28
Abstract: 380,755. Electric battery lamps. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (Assignees of Fagan, J. T. ; 2271, Chatfield Drive, Cleveland Heights, Ohio, U.S.A.) April 28, 1932, No. 12272. Convention date, April 28, 1931. [Class 39 (ii).] An electric flashlight device adapted more particularly for photographic purposes comprises a metal shell or casing 10 with a flared upper part to receive a lamp socket consisting of a resilient collar which may be formed by a number of segments 15, 16, 17 of insulating material which are drawn together by a spring 18 located within a groove in their periphery. The segments 15, 16, 17 are retained within the shell by a wire spring 19 which extends across their surfaces and expands within a groove 20 in the rim of the casing, the ends 21, 22 of the spring being extended through a groove in the rim and arranged so that they can be pinched together to compress the spring to facilitate its removal. The end 22 of the spring is extended and bent around at 23 so that it can be pressed through a hole 24 in the shell 10 to act as a switch by contacting with the shell 25 of the lamp base. The lamp 27 is inserted into the holder by a simple thrust movement and retained therein by the lateral pressure maintained upon it by the segments. A helical spring 12 makes contact between the bottom of the battery and the casing, and holds the centre contact 13 of the battery against that of the lamp.
Patent GB-181205-A (GB)
Title: Improvements in expanding bracelets
IPC: A44C5/08
Filed: 1921-04-29
Abstract: 181,205. Hipkins, J. F. April 29, 1921. No Patent granted (Sealing fee not paid). Bracelets.-Each link of an expanding bracelet comprises two superposed box-like members 6 slidable in opposite directions on a central loop 5 on which two springs 10 are threaded to retain the members 6 in contracted position. The loop 5 is located within the pair of members 6, the opposing faces of which have slots 9 in which the loop works and stops 11 to prevent it from coming out, the adjacent ends of the members 6 also having slots 8 for the loop. The opposite ends of the members 6 are connected by pivot pins 7 to the sliding members of the adjacent links. In assembling, the springs 10 are introduced through the enlarged holes for the pivot pins 7 and the wire &c. for the member 5 is threaded through the springs bent to loop shape and its ends secured together.
Patent GB-930487-A (GB)
Title: Manufacture of semiconductor devices
IPC: H01L21/24
Filed: 1961-04-06
Abstract: 930,487. Semi-conductor devices. PACIFIC SEMICONDUCTORS Inc. April 6, 1961 [Oct. 13, 1960], No. 12396/60. Class 37. A semi-conductor crystal has an impurity diffused into it from an organic compound including the impurity. The compound is one which is capable of releasing the impurity at a temperature below the melting-point of the semi-conductor body. The invention is described with reference to introducing boron into silicon wafers and the substance used is trymethoxyboroxine to introduce boron into the crystal and trimethoxysilane which is used as a solvent for the trimethoxyboroxine although the solvent may be entirely omitted. In a first method the silicon plates a (Fig. 3) are coated on one surface with the liquid 12 and then placed in a stack with the coated faces adjacent each other in a quartz tube open to the atmosphere. The whole is heated to a temperature between 600‹ and 1380‹ C. and, if the highest temperature is used, a diffusion time of 8 to 76 hours is necessary. The Specification states that a relatively thick diffused layer is produced on the face adjacent the polymer and a relatively thin one on the opposite face. Prior to stacking the plates may be heated to from 50‹ to 200‹ C. to render the coating relatively solid. The glassy substance which the polymer becomes may be removed together with the thicker diffusion layer and the other layer used. The polymer is said to give up boron upon oxidation in the presence of water and heat. If the silane is an independent silicon source it will prevent pitting of the silicon by B 2 O 3  which is evolved during the diffusion run. In a further embodiment the plates are not coated but are stacked in a quartz tube furnace the inside of which is coated with the impurity source. Analogous boroxine compounds such as alkyl and anyl boroxines may be used provided they are liquid at room temperature, if necessary when dissolved in a suitable solvent.
Patent GB-1283796-A (GB)
Title: Production of 11-carbamoylundecanoic acid
Inventor: DURSTON PETER JOHN
IPC: C07C231/00
Filed: 1970-03-16
Abstract: 1283796 Production of 11-carbamoylundecanoic acid BP CHEMICALS Ltd 19 April 1971 [16 March 1970] 12443/70 Heading C2C 11-Carbamoylundecanoic acid is prepared by contacting decane-1, 10-dicarbonimide with hydrogen in the liquid phase in the presence of a metal catalyst, e.g. Raney cobalt, and water at elevated temperatures and pressures.
Patent GB-149448-A (GB)
Title: Improvements in apparatus for indicating or recording continuously the specific gravity of any fluid
IPC: G01N9/16
Filed: 1919-11-17
Abstract: 149,448. Halliwell, F. L. Nov. 17, 1919. No Patent granted (Sealing fee not paid). Specific-gravity estimating-apparatus of the type in which a float or sinker is suspended in the fluid whose specific gravity is to be measured by a wire &c. A<1> attached to a balance lever C connected to a multiplying-lever L carrying a recording-pin &c. E. The balance lever C is weighted on the side connected to the multiplying-lever by an arm D, which is placed at such an angle that, in the zero position, the arm is at a considerable angle to the vertical, in order to enable a more open scale to be employed. The balance lever may also be under the control of a spring H. The float is contained in a totallyimmersed still-fluid chamber perforated at the top and bottom.
Patent GB-1535462-A (GB)
Title: Production of packaging containers
IPC: B31B50/64
Filed: 1977-03-24
Abstract: 1535462 Forming tubes TETRA PAK DEVELOPPEMENT SA 24 March 1977 [31 March 1976] 12503/77 Heading F2P [Also in Division B5] Tubes are made by applying heat to one face of a plastics sheet thereby causing it to curl and its edges to overlap, and then bonding the edges together. The tube made by this process may be closed at at least one end to form a container. In a first embodiment (see Fig. 1, not shown) individual sheets are cut from a continuous length and are fed by rollers past radiant heaters which cause them to curl, control of the curling being effected by an array of inner and outer rollers which guide the sheets to the desired configuration. The overlapping edges of the sheets are then seamed by heated rollers to form individual sleeves. In a second embodiment (see Fig. 3, not shown) a continuous web is passed by rollers over a heater and a curl controlling array of inner and outer rollers and the continuous curled sheet thus formed is seamed and chopped into individual lengths.
Patent GB-167818-A (GB)
Title: Reinforced concrete ship moulds
IPC: B63B5/16
Filed: 1920-05-06
Abstract: 167,818. Kastengren, G. E. May 6, 1920. Moulds for building concrete ships.-Relates to external moulds for concrete ships comprising a number of mould sections disposed on each side of a keel block and movable laterally on wheels &c. A ship's way 12 is provided with a longitudinally-moving wheeled launching table 10 carrying a keel block 15 in conjunction with the side mould sections 3 adapted to run on outwardly-sloping track ways on the table 10 and the adjoining floor. Each mould section is fitted with an angle-plate 17 adapted to be bolted to the keel block 15. The mould sections are released by the insertion of screw or other devices to exert pressure between the keel block 15 and shoulders 21 formed on the mould sections. The mould sections may be constructed of reinforced concrete, or of wood, iron, &c., and are formed with cut-away portions to accommodate the posts 7 which support a shed above the ship's way. A lining 23 prevents the mould from adhering to the sides of the ship, and steps 24 enable a person to ascend to the top. The joints between adjacent sections of the mould are made by wedging a rope or piece of hemp between the chamfered edges.
Patent GB-1323174-A (GB)
Title: Method for producing a synthetic paper-forming material
IPC: D04H3/16
Filed: 1971-05-03
Abstract: 1323174 Fibrous material TORAY INDUSTRIES Inc 3 May 1971 [4 May 1970 23 June 1970] 12659/71 Heading B5B [Also in Divisions D1 and D2] In a process for producing fibrous material for use in paper-making a dispersion comprising a dispersed phase containing a slurry or solution of drops of an olefin or styrene homo- or copolymer (the copolymer containing at least 50 we. per cent of units derived from olefin or styrene monomer) in a compatible solvent dispersed in a dispersion medium (e.g. water or α-butyl glycol) is ejected under pressure through an orifice to form an oriented fibrous material. Preferably the polymer is polyethylene, polypropylene or a graft copolymer of polypropylene and vinyl alcohol, vinyl acetate or acrylic acid containing not less than 70% by weight polypropylene and the dispersed phase is prepared by polymerizing olefin and/or styrene monomers alone in the compatible solvent. Suitable solvents are methylene chloride, hexane or heptane and optimum particle size of the dispersed phase in the dispersion is from 3 to 400 microns. The ejection is preferably carried out at a temperature between the boiling point of the solvent and the melting point of the polymer and may suitably be carried out under autogenous pressure at a temperature between the dissolving temperature of the polymer in the solvent and 280‹ C. The dispersion medium is preferably from 30-2000% by volume of the dispersed phase and the polymer concentration in the dispersed phase is from 5 to 70% by weight of the solvent. The dispersion medium may contain a dispersion stabilizer, e.g. sodium dodecylbenzene sulphonate. The dispersion may be ejected into water or other liquid but in the preferred embodiment is ejected directly on to a porous surface, the fibrous material being processed directly therefrom into paper. The majority of paper-forming material formed by the process preferably consists of fibres having a thickness of from 10 to 1000 microns and a length of from 50 to 25,000 microns. In examples emulsions prepared from polypropylene, polyethylene, polybut-1-ene, poly- 3 - methylbut - 1 ene, poly - 4 - methylpent- 1-ene, polyhex-1-ene, block copolymers of polypropylene with polyethylene and vinyl acetate and graft copolymers of polypropylene with saponified vinyl acetate and acrylic acid in suitable solvents are heated to 160‹ C or 140‹ C. in an autoclave and ejected through a 0À8 mm. diameter nozzle under autogenous pressure on to a stainless steel wire-netting screen position 30 cm. from the nozzle. The collected fibrous material was made directly into paper having good writing properties by peeling the material from the wire screens by use of air jets from the back of the screens, squeezing and drying the resultant mass between filter papers, optionally smoothing using a pair of chromium plated nip rollers at room temperature and ironing under a pressure of 40g./cm.<SP>2</SP> at 115‹ C. for 5 minutes.
Patent GB-1222963-A (GB)
Title: Improvements relating to insulation testing
Inventor: TAGG GEORGE FRANK
IPC: G01R27/18
Filed: 1967-03-17
Abstract: 1,222,963. Measuring resistance and capacitance. EVERSHED & VIGNOLES Ltd. May 27, 1968 [March 17, 1967], No.12719/67. Heading G1U. To determine insulation resistance R x , e.g. of a transformer or electrical machine, in the presence of a capacitance C x  in parallel with it, a voltage at a frequency of the order of 0À1 H 2  is applied across the insulation and the current flowing is measured at the instants when the voltage is a maximum, the capacitive current then being zero. The capacitance C x  may be obtained in a similar way from measurements at the instants when the voltage is zero. In Fig. 4 the low frequency voltage is obtained from an arm 14 which rotates at a steady speed over a plurality of contacts connected to tappings on a resistor 11 supplied with a direct voltage V g . A switch 29 in the measuring circuit, operated by the arm, ensures that measurements are made at the required instants. The current at these instants may be determined by balancing the voltage across a shunt 22 with that across an adjustable potential divider 25, this voltage then providing a measure of R x  or C x . A crossedcoil meter 35, 37 whose control torque is determined by V g  may be used for this measurement in order to compensate for variations in V g . In another embodiment Fig. 5 (not shown) the current is rectified and supplied to the moving coil (55) of a recording instrument having a pointer whose position is recorded on a chart at the required instants. The switch (or switches) 29 may be reed switches actuated by a magnet on arm 14.
Patent GB-1109878-A (GB)
Title: Adhesive pads and method of making and using them
IPC: B65D81/107
Filed: 1965-03-25
Abstract: A polyurethane composition comprises a part "A" consisting of tolylene diisocyanate and trimethylol propane and a part "B" consisting of polypropylene glycol, mineral filler (clay), litharge, phenyl mercuric acetate, calcium octoate, and ethylene glycol mono-n-butyl ether, or polypropylene glycol, polyalkylene triol, calcium octoate, phenylmercuric acetate, lead octoate, filler (clay), antioxidant (optional) and pigments (chrome green and carbon black).ALSO:An adhesive pad suitable for use as a drum support pad comprises a flat disc having the following physical properties:- .Shore A-2 durometer.40 to 100 .ball hardness.1.5 to 80 lbs (0.7 to 36.5 kg) .compression modulus.(1%) 100 to 3000 p.s.i ..(7 to 210 kg/sq. cm.) .compression 50%.150 to 5000 p.s.i ..(7 to 350 kg/sq. cm.) .recovery from 50%.compression - at least ..75%  Standard compression set - not more than 15%, and having adherently bonded to one substantially flat face of the disc a thin coating of pressure sensitive adhesive.  The adhesive may be bonded to the disc through an intervening structure including a plastics film.  The intervening structure may comprise a first layer of pressure sensitive adhesive on the flat face of the disc, the plastics film, and a second outer layer of pressure sensitive adhesive.  The or each adhesive layer is characterized by having a bond with the surface onto which it is coated which is greater than that obtained by the application of pressure between the adhesive layer and another conforming surface of the same or similar material to that of the surface.  The adhesive may be applied to discs cut from vulcanized rubber tyre thread stock and dried at elevated temperature.  The adhesive layer may be protected by a removable cover sheet e.g. a paper liner treated with an organo silane polymer.  The plastics sheet may be of polyvinyl chloride, polyvinyl chloride - acetate or polyvinyl butyral.  The rubbery material of the disc may be vulcanized rubber, polyurethane or polysulphide.  The adhesive pad may be made by contacting a coating of pressure sensitive adhesive with a liquid self-curing resinous composition which may be supplied in a uniform depth of about 1/2 inch to make the pad and then permitting the composition to cure in contact with the adhesive. The adhesive may be applied to one or both sides of a polyvinyl chloride film, one adhesive surface is protected with a removable liner of silicone-coated paper, and a series of open-ended shallow cylindrical molds of various shapes e.g. polyethylene rings, placed on the uncoated or the other adhesive surface, self-curing liquid urethane resin composition is poured into each mold, cured in contact with the uncoated or adhesive surface, the molds removed, and the adhesive coated pads cut out of the assembly. The adhesive may comprise copolymers of acrylic acid with long chain acrylate esters e.g. isoamyl acrylate, or mixtures of crude rubber, phenol-aldehyde resin and thermoplastic terpene resin. The pad is used as a support for drums and containers.
Patent GB-1016802-A (GB)
Title: Thermally responsive electric switch
IPC: G08B17/04
Filed: 1962-07-10
Abstract: 1,016,802. Thermal switches. J. E. LINBERG. July 10, 1962 [July 13, 1961], No. 12771/65. Divided out of 1,016,801. Addition to 961,142. Heading H2B. A switch as in Specification 961,147 has a diaphragm contacting an electrode tip, e.g. of palladium, which is ingassed with hydrogen which can be driven out by the application of heat, so that if arcing occurs during contact breaking, hydrogen is driven out from the electrode tip and forces the diaphragm to move rapidly away from said electrode and thereby extinguish the arc.
Patent GB-916828-A (GB)
Title: Half-lap for textile combing machines
IPC: D01G19/10
Filed: 1961-04-10
Abstract: 916,828. Combing machines. WHITIN MACHINE WORKS. April 10, 1961 [April 12, 1960; Oct. 4, 1960], No. 12802/61. Class 120 (1). A combing machine half-lap has the rows of needles spaced from each other by amounts increasing progressively from front to back of the needle bed. The progressively closer spacing may be arranged in stages, each stage having a group of slots of equal spacing. The needle assemblies 20 have their needles secured by soldering, the butts of the needles extending below the bottom edge of the bars to which the needles are secured. To secure the bars in the needle bed 13, the lower portions of the bars are dipped in bonding material or a cement, the bars are inserted in slots, and the needle bed heated in an oven.
Patent GB-378005-A (GB)
Title: Apparatus for the generation of fuel for internal combustion engines
IPC: C25B9/17
Filed: 1931-04-30
Abstract: 378,005. Actuating materials. BAKER, J. A. G., Galwally, Belvoir Park, Belfast. April 30, 1931, No. 12809. [Class 7 (ii).] Gaseous fuel for internal-combustion engines is generated by electrolysis of water or other suitable liquid in a cell 1 containing electrode plates 2, alternately positive and negative, separated by insulating strips. The gas accumulates above the liquid in the space 4 and is led by a duct 5 to a chamber 6 containing a throttle valve 7 and provided with a restricted passageway 8. Air may be admitted to the chamber 6. The mixture may be drawn into the cylinders by suction or may be delivered under pressure. The space 4 may be connected through a valve to a rubber or like expansible container housed in a separate receptacle. A filling-cap 9, safety-valve 10 and pressuregauge 12 are provided. Reference has been directed by the Comptroller to Specifications 126,889, [Class 41, Electrolysis], and 168,939, [Class 7 (iii), Internal-combustion engines, Carburetting-apparatus &c. for].