baber/WOPTO huggingface dataset:
Patent GB-1450099-A (GB)
Title: Actuating force generating devices
IPC: B60T13/22
Filed: 1973-10-19
Abstract: 1450099 Hydraulic actuators TOKICO Ltd 19 Oct 1973 [20 April 1973 (2)] 48810/73 Heading F1D [Also in Division F2] An actuating-force generating-device comprises a multi-stage cylinder body 1, Fig. 1, having a plurality of cylinders 2, 3, of different diameters and arranged in series, a piston, 4 or 6, slidable in each cylinder, a piston-rod 8 fixed to the foremost piston 4 and having an actuating end projecting from the forward end of the cylinder body, a container 12 at the rear end of the cylinder body, each cylinder having a port 19 or 20 in its forward end for admission and discharge of hydraulic fluid, one or more connecting rods, e.g. 16, extending rearwardly from the piston-rod or, as shown, from the foremost piston 4 through the rearmost piston 6 in sealing relation therewith and into the container 12, resilient means, as shown, springs 29, 28, coupled to the rearmost piston 6 and the connecting rod 16 for transmitting a portion of the force of the resilient means to the rearmost piston and the remainder of the force to the connecting rod and thereby to the piston-rod 8, and means, as shown, a stop 18 fixed to the connecting rod 16, for coupling the rearmost piston and the connecting rod 16 for movement forwardly so that when the rearmost piston 6 is blocked by hydraulic fluid in its cylinder 3, only the remainder of the force of the resilient means is transmitted to the piston-rod 8 but when the rearmost piston is not so blocked, the entire force of the resilient means is transmitted to the piston-rod. In operation, when a vehicle brake actuated by piston-rod 8 is required to be applied for purposes other than a sudden stop, an electromagnetic valve 42 is de-energized, whereupon port 79 is connected to a tank 46, so pressure to the left of piston 4 is relieved, and spring 28 applies the brake via seat 75, connecting rod 16 and piston 4. If a sudden stop is required, cylinder 3 is de-pressurized in a similar manner, as well as cylinder 2, whereupon each spring urges its respective piston leftwards. If cylinder 2 is discharged more quickly than cylinder 3, the brake is first applied by spring 28 only. Subsequently, when piston 6 makes contact with the stop 18 fixed to connecting rod 16, spring 29 also acts on piston 4 via piston 6 and stop 18. If valve 42 fails to permit discharge therethrough from cylinder 2, cylinder 2 is de-pressurized via a checkvalve 32 and cylinder 3. An alternative use for the invention is in a press machine.
Patent GB-1086509-A (GB)
Title: A method of fixing by welding, a pipe end in a hole in a wall of a multi-layer container
Inventor: SAGARA HIDEO
IPC: B23K33/00
Filed: 1964-12-01
Abstract: 1,086,509. Welding by fusion; making pressure vessels; improving physical characteristics. MITSUBISHI JUKOGYO KABUSHIKI KAISHA. Dec. 1, 1964, No. 48885/64. Headings B3A, B3R and B3V. A pipe end is fixed in a hole in a wall of a laminated pressure vessel by welding. Layers 3, 5 of soft weld metal (i.e. metal softer than the metal of the laminations 1) are deposited on the periphery of the hole and around the pipe end 2 and are further softened by flame heating. The pipe end is secured in the hole by layers 5, 6 of soft weld metal and a flame or electric heater is applied to the interior of the pipe end to soften the surrounding parts. To further relieve the stresses in the weld zone the pipe end 2 is expanded by a tube expander. In a modification, the laminations are joined by a weld deposit and after heating to red-heat the zone surrounding the hole is permanently deformed outwardly by a jack located inside the vessel. The pipe end is then welded in the hole.
Patent GB-1040590-A (GB)
Title: Trigger circuit and ignition system
IPC: F02P3/08
Filed: 1963-12-11
Abstract: 1,040,590. Ignition systems. F. L. WINTERBURN. Dec. 11, 1963 [Sept. 23, 1963], No. 48954/63. Heading FIB. [Also in Division H3] An ignition circuit for an internal-combustion engine having a coil 15, at least one spark plug to which sparking current is supplied by the coil, a battery and breaker points 14, 19 regularly opened and closed by the engine, comprises a series circuit including a capacitor C4, the primary winding of the coil and gatecontrolled switching means 1, 3, the capacitor discharging through the coil when the gate controlled switching means conducts current, the gate controlled switching means conducting current intermittently in response to sequential openings of the breaker points and a resistor in parallel with a diode connected between the gate electrode of the gate controlled switching means and the breaker points and conducting the trigger signals but preventing the triggering of the gate controlled switching means by false trigger signals created by bouncing of the breaker points following their closure. The switching means may be a silicon controlled rectifier. The trigger capacitor substantially fully discharges in the time between consecutive point openings. As shown the power supply 10 comprises a two transistor oscillator powered by the battery and rectifying means connected to the output terminal of the oscillator.
Patent GB-1481860-A (GB)
Title: Unsaturated linear polyesters
IPC: C07D235/26
Filed: 1974-11-13
Abstract: 1481860 Flame retardant unsaturated polyesters CIBA-GEIGY AG 13 Nov 1974 [13 Nov 1973 6 Aug 1974] 49204/74 Headings C3R and C3P A flame retardant linear unsaturated polyester is derived from an unsaturated dicarboxylic acid and a diol of the formula in which X is chlorine or bromine, R 1  and R 1 <SP>1</SP> are hydrogen, methyl, ethyl or phenyl and R 2  and R 2 <SP>1</SP> are hydrogen or R 1  and R 2  and/or R 1 <SP>1</SP> and R 2 <SP>1</SP> are trimethylene or tetramethylene. The examples describe the preparation of unsaturated polyesters from the following compounds: maleic anhydride, fumaric acid, 1,3- di(2<SP>1</SP> - hydroxyethyl) - 4,5,6,7 - tetra - chloro or bromo - benzimidazolone, 1,3 - di(2<SP>1</SP>- hydroxyn - propyl) - 4,5,6,7 - tetrachlorobenzimidazolone, phthalic anhydride, adipic acid, sebacic acid, isophthalic acid, terephthalic acid, ethylene glycol, diethylene glycol, polyethylene glycol (600), neopentyl glycol and 1,12-dodecanediol. The unsaturated polyester may be cured with a copolymerizable monomer, e.g. styrene, and a polymerization catalyst.
Patent GB-1175113-A (GB)
Title: An Electrical Connector Assembly
IPC: H01R4/50
Filed: 1967-11-01
Abstract: 1,175,113. Electrical connectors. AMP Inc. 1 Nov., 1967 [17 Nov., 1966], No. 49544/67. Addition to 1,033,079. Heading H2E. An electrical connector assembly comprises a C-shaped receptacle 1 with a pair of light portions 2 in which respectively a conductor 9 and a cylindrical portion 7 of a plate 5 are entrapped by means of a wedge 3. A slot 6a adjacent cylindrical position 7 receives the relevant light portion 2. The wedge 3 is driven into the receptacle by a tool of the kind described in Specification 969,567 and a tongue 10 holds the wedge firmly against the receptacle as described in Specification 1,030,058. The plate may be arranged at any suitable angle with respect to the receptacle and the region 6, comprising the portion 7 and slot 6a, may be inclined to rest of the plate (Fig. 3, not shown).
Patent GB-1362010-A (GB)
Title: Lamp bulb holders
IPC: H05K3/30
Filed: 1971-10-26
Abstract: 1362010 Lampholders CANNON ELECTRIC (GREAT BRITAIN) Ltd 26 Oct 1972 [26 Oct 1971] 49624/71 Heading H2E Two resilient insulating members 1, 11, snap together, retained by latches (12, 13), Fig. 3 (not shown), and between them is trapped a tape cable or flexible printed circuit, 7, located by pegs 4, 5, so that its conducting strips are pressed against the base contacts of a lamp, by resilient curved beams 2, 3, bridging the frame of the first member, 1. The second member, 11, in the embodiment shown, retains a bayonet lamp shell by slots 15 in a metal liner 14, of which the projecting ears 16, 17 serve to latch the assembly into a panel aperture and also to provide an earthing contact. The tape 7 can alternatively be led away through slot 6, dispensing with peg 5, as in Fig. 2 (not shown). Lamps of single contact and of screwed shell are accepted in other embodiments.
Patent GB-1405493-A (GB)
Title: Pressure limiting valve
IPC: F16K17/10
Filed: 1972-10-27
Abstract: 1405493 Fluid-pressure servomotors ROBERT BOSCH GmbH 27 Oct 1972 [27 Oct 1971] 49657/72 Heading G3P In a pressure-limiting valve, the pilot valve chamber 14 is connected to the main valve chamber 2a via two throttled ducts 16 and 17  opening radially and axially, respectively, into the pilot valve chamber. In operation, valve chamber 2a is fed with inlet fluid via throttled duct 5 such that pressures on either side of the main valve member 4 are balanced. Subsequently, a rise in inlet pressure causes pilot valve 11 to be raised off of its seat to vent fluid in valve chamber 2a, whereupon main valve 4 is lifted by the inlet pressure so as to release this to vent port 7.
Patent GB-1280711-A (GB)
Title: Sustained release dosage forms
Inventor: SHEPHERD THOMAS HUGH
IPC: C08K5/00
Filed: 1969-10-10
Abstract: 1280711 Sustained release dosage forms NATIONAL PATENT DEVELOPMENT CORP 10 Oct 1969 [11 Oct 1968] 49823/69 Addition to 1205764 Heading ASB Sustained release dosage forms comprising dry compositions containing solid therapeutically-active material and a non-toxic water-insoluble hydrophilic polymer of a hydroxy C 2-3  alkyl acrylate or methacrylate or of a hydroxy C 2-3  alkoxy C 2-3  alkyl acrylate or methacrylate, are formed by casting or moulding an anhydrous casting syrup or solution comprising the therapeutically active material and the acrylate or methacrylate monomer and polymerising this monomer, resulting in a cast or moulded dosage form of inhibited deterioration or loss of potency and extended shelf life. The hydrophilic polymer is preferably a polymer of 2-hydroxyethyl acrylate or methacrylate or 2-hydroxypropyl acrylate or methacrylate. The hydrophilic polymer may be a copolymer of the acrylate or methacrylate with up to 20% of a cross-linking agent such as ethylene glycol-, propylene glycol or butylene glycoldiacrylate or -dimethacrylate. The dosage form may be administered orally or implanted subcutaneously and may be in the form of a shaped pill or tablet, the therapeutically active material comprising a central core and the polymer affording a solid outer layer surrounding the core, which may comprise an admixture of the polymer and active material. The dosage form may have an intermediate layer between the core and outer layer, e.g. the outer layer includes the same or different therapeutically-active material dispersed therethrough and the intermediate layer comprises the polymer. The therapeutically active material may be an antibiotic, sedative, hypnotic, hypotensive, vasodilator, amphetamine, hormone, vitamin, or a tranquilizer.
Patent GB-1156810-A (GB)
Title: Thermal Relay.
IPC: H01H61/02
Filed: 1966-11-10
Abstract: 1,156,810. Resistance elements. TEXAS INSTRUMENTS Inc. 10 Nov., 1966 [3 Jan., 1966], No. 50395/66. Heading H5H. [Also in Division H1] Resistance heating elements for use with a thermal switch (see Division H1) are made of material having a steep-positive-sloped resistivity-temperature curve such as carbon-black loaded, cross-linked polyethylene and the semi-conducting barium titanate ceramics Ba. 0 . 997 La 0 . 003 TiO 3  and Ba 0 . 909 Pb 0 . 088 La 0 . 003 TiO 3  in the form of pieces with electrically conducting layers such as silver attached to opposite faces of each piece. They are mounted on the switch bimetal and electrically separated therefrom by a layer of electrically insulating material such as mica, or by a layer of electrical and thermal insulation such as a polycarbonate separated from the bimetal by one or two portions to form an airgap.
Patent GB-1282718-A (GB)
Title: Improvements in or relating to rolling mill apparatus and methods of rolling metal
Inventor: WILSON ALEXANDER IAN
IPC: B21B39/06
Filed: 1968-10-23
Abstract: 1282718 Rolling HILLE ENG CO Ltd 14 Oct 1969 [23 Oct 1968] 50408/68 Heading B3M Workpiece manipulating apparatus, which can be used for handling rolled bar in, for example, a double-duo rolling mill, incorporates a bar gripping assembly disposed on either side of the mill, the assemblies being aligned with a rolled bar and being mounted for movement towards and away from the rolls of the mill. The double-duo mill has roll pairs 14, 16 and 20, 22 which rotate in opposite directions, the pairs being alternately positioned in operative or retracted-positions so that the bar is reversibly rolled in the mill. Each gripping assembly is movable transversely so that it can align the bar with a desired pass groove, is rotatable about its axis for twisting the bar between passes, and is adjustable in height. To roll a bar 82, the leading end of the bar is fed by the left-hand assembly 38 between the roll pair 14, 16. During rolling, the bar passes through the right-hand assembly 38 where it is gripped lightly, until the trailing end reaches the assembly. The bar is then gripped tightly, the two assemblies shifted to wards each other, and the bar fed towards the left between the roll pair 20, 22, the roll pair 14, 16 having first been retracted. Each assembly includes a tube through which the bar normally passes and a pneumatically-operated lever 62 for gripping the bar when required. The assembly is movable transversely by a cylinder 72, and the tube is rotatable by a further cylinder 78. A cylinder 82 pivots the assembly about a wheel 70 at one end, to adjust the height of the assembly. The operation of the rolls and of the grippers can be made automatically according to a punchedcard programme and signals from position detectors, or can be made manually.
Patent GB-1091950-A (GB)
Title: Buttons
IPC: A44B1/24
Filed: 1965-11-26
Abstract: 1,091,950. Buttons. C. A. G. IHREBORN and C. I. R. HEDENBERG. Nov. 26, 1965 [Nov. 26, 1964], No. 50461/65. Heading A3H. A button comprises a cup 1, with a rim portion 2 and an attachment loop 4, and a dished plate 5, with an outwardly turned rim portion 6 and a central aperture for an attachment loop 4. The edge of a piece of material 8 covering the cup 1 is gripped between the rim portion 2 and the rim portion 6.
Patent GB-1157334-A (GB)
Title: Rechargeable Electric Cells
IPC: H01M12/08
Filed: 1966-11-11
Abstract: 1,157,334. Fuel cell. TEXAS INSTRUMENTS Inc. 11 Nov., 1966 [18 March, 1966], No. 50684/66. Heading H1B. [Also in Division C7] The invention comprises a rechargeable cell having a high available energy per unit weight comprising an aqueous electrolyte, an anode made from a metal having a solubility and electrochemical potential less than that of zinc, immersed in the electrolyte and a cathode which is permeable to air and oxygen but impermeable to electrolyte, having one surface in contact with the electrolyte, the external surface area of the anode, neglecting the pores, being at least equal to that of the cathode and the total surface area including the pores being at least 10 times that of the cathode. The electrolyte may be a 5-50% aqueous solution of NaOH, KOH, LiOH, H 3 PO 4 , H 2 SO 4 , HNO 3  or HCl. It may be circulated round the cell. The anode may be a nickel grid coated with cadmium, cobalt, iron, vanadium, chromium or tungsten of total thickness up to 100 mils. The active material may be electroplated from a solution of the metal nitrate. The cathode may be a nickel or tantalum grid carrying a Pt black catalyst suspended in a synthetic resin. The catalyst may be extended with carbon black, boron carbide or titanium carbide. The cathode may be up to 25 mils thick. In a particular embodiment (Fig. 1), cathodes K are in contact with air on their outer faces and electrolyte on their inner. Anodes A dip into the electrolyte. In Fig. 2 anode A1 is contained in support 9 and cathode K1 is attached to support 7. 7 and 9 are separated by rubber ring 10 and the space between the electrodes is filled with electrolyte. In Fig. 3 (not shown), the anode is a cylinder having a number of passages passing through it parallel with its axis. It is immersed in a circular pool of electrolyte bounded by an annular air cathode.
Patent GB-1220310-A (GB)
Title: Aromatic diamines containing ester groups and their use in the production of polyurethane elastomers
Inventor: MECKEL WALTER
IPC: C08G18/65
Filed: 1969-10-17
Abstract: 1,220,310. Polyurethanes. FARBENFABRIKEN BAYER A.G. 17 Oct., 1969 [17 Oct., 1968; 8 Aug., 1969], No. 50891/69. Heading C3R. [Also in Division C2] Polyurethane elastomers are produced by reacting a compound containing at least two hydroxyl groups and having a molecular weight of 800-5000 with a diisocyanate employing as a chain-extender an aromatic diamine containing an ester group linked directly to an aromatic nucleus wherein the amino groups are in the meta- and/or paraposition to the ester group and a fluorine, chlorine or bromine atom or a C 1-4  alkoxy substituent is in the ortho-position to at least one amino group.
Patent GB-1170453-A (GB)
Title: Improved Method of and Apparatus for Treating Cereal Grains
Inventor: MEYER PIERRE CARVALLO
IPC: B02B3/02
Filed: 1966-11-15
Abstract: 1,170,453. Cleaning cereal grains; polishing rice. P. CARVALLO MEYER. 15 Nov., 1966 [3 Dec., 1965; 28 April, 1966], No. 51057/66. Heading A2Q. In a method and apparatus for cleaning cereal grains, particularly for whitening and polishing rice grains, the grains are subjected to grinding by a moving, e.g. rotating, abrasive surface made up of abrasive particles which, individually, would pass through a sieve having 18 or more, e.g. between 20 and 60, orifices per square inch (the grain numbers of the abrasive) and the whole abrasive grinding surface is subjected to a blast of air having sufficient force to keep the surface clean. In the apparatus shown in Fig. 1, the grains are fed, from a hopper 18, into the milling space between the grinding surface 2 of a rotating, hollow rotor 1 and a sieve structure 14, e.g. incorporating elastic baffles 15 for preventing swirling of the grains. A powerful current of air is passed through the milling space and sieve structure, in the direction indicated by the arrows 24, in the direction indicated by the arrows 24, 34 and 35, to cool the surface 2 and carry detached flour into an annular, outer chamber 23, through holes 26 in the base of which the flour is then swept, as by a rotating scraper 25, into a lower collecting chamber 27. Suction is applied to chamber 23 and/or chamber 27, through duct 29 and/or duct 28, to create said powerful current of air, which enters the apparatus through holes 30 in a cover 12. The cleaned grains are discharged from the apparatus through a funnel-shaped base 13 and a shoot 21, which is spaced from the base 13 to provide an annular gap 31, through which another current of air is drawn in the directions indicated by the arrows 33. The rotor 1 is mounted on a belt-driven shaft 3 running in bearings 4 and 5. The lower end of the shaft 3 is mounted in a bearing 8, supported by a pivoted lever 9, which is connected, through a nut, to a threaded rod, 10, which can be rotated to raise or lower the rotor 1 relative to the sieve structure 14. Corresponding adjustments to obturators 16 and 17 can then be made to cover unrequired sieve mesh openings. In the construction shown in Fig 4, the rotor comprises a plurality of superposed, e.g. interchangeable, plates 42 pierced by large holes 47 and separated by gaps 44, through which holes and gaps a powerful current of air can be drawn. Each plate 42 is provided with an abrasive tyre having the form shown at 43 - or 43a in the case of interchangeable plates - e.g. made of sintered magnesia. According to Fig. 6 (not shown) each plate 42 may be fitted with a taperingly fitting removable tyre (49) made of ceramic abrasive material, which is secured to the plate by a locking ring (50) and screws (51). The powerful current of air could be impelled, or sucked and impelled, through the apparatus according to the invention.
Patent GB-1517715-A (GB)
Title: Apparatus for oil separation
IPC: B01D17/04
Filed: 1974-11-26
Abstract: 1517715 Separating oil from water BRITISH PETROLEUM CO Ltd 31 Oct 1975 [26 Nov 1974 23 April 1975] 51097/74 and 16815/75 Heading BID An apparatus for removing oil from water comprises oil-coalescing beds 2, 3, 4, each containing particles between permeable plates, and a settling zone 15 downstream of the beds. A filter 12 may be positioned upstream of the beds. The beds may comprise anthracite, charcoal, polystyrene, polyethylene, polypropylene, vermiculite or sand. The filter 12 may comprise cellulose acetate fibre on a polypropylene core; filter 12 may comprise cotton, viscose, nylon, polyester, glass wool, resin impregnated paper, stainless steel wire mesh and P.T.F.E. coated wire mesh.
Patent GB-1416541-A (GB)
Title: Method and apparatus for following the motion of a datum mark
IPC: G01B11/16
Filed: 1972-11-06
Abstract: 1416541 Photo-electric mark followers H W WALLACE & CO Ltd 21 Dec 1973 [6 Nov 1972] 51100/72 Heading G1A One dimensional movements of a datum mark are followed by a carriage having a lamp to illuminate the mark, a photo-electric cell having a pair of light-sensitive electrodes on to which the image of the mark is projected, and a motor responding to a difference signal from the photoelectric cell to move the carriage. The boundary between the electrodes of the photo-electric cell is arranged perpendicular to the direction of movement.  The invention is described with reference to a tensile testing apparatus in which a sample provided with two bench marks is stretched, two carriages being provided to follow the movements of the marks. The distance between the carriages is measured, e.g. by means of a wire rotating a drum driving a potentiometer on one carriage or by a toothed strip on one carriage operating a switch on the other, to determine the extension of the sample. The digital measuring system may also utilize a rotary digital encoder or a toothed strip may operate a mechanical counter. The apparatus may be arranged to operate a graphical plotting machine. The apparatus comprises a vertical pillar 1 on which the carriages are supported by wheels 3, 5. A lamp assembly 21 illuminates the specimen 26 and the reflected light is imaged by lens 30 on to a differential photo-electric cell having two sensitive electrodes. The electrodes are connected to a differential amplifier to produce an error signal which is filtered and amplified and applied to a motor 14 which drives the wheel 3 to cause the carriage to follow the bench mark. The gain of the servo loop is controlled by means of an FET connected in a feedback path of the differential amplifier. Coarse loop gain is provided by feeding the total light signal from the differential photo-cell to a current generator which provides the bias for the FET. Loop gain is increased when an error signal is produced by subtracting the modulus of the error signal from the total light signal. Fine loop gain control is provided by detecting the noise component of the error signal and adding this to the coarse control signal to reduce the loop gain. If the sample is of a highly extensible material, e.g. rubber, the bench marks may have an exponential taper on both edges so that as the mark is stretched at least some part is of suitable width to produce an error signal when displaced.