baber/WOPTO huggingface dataset:
Patent GB-594966-A (GB)
Title: Improvements in or relating to manufacture of articles from rubber or the like
IPC: B29D22/02
Filed: 1944-11-24
Abstract: In making a balloon &c. having a neck less than one half the greatest dimension of the mould which must pass through the neck, the following steps are performed:-(1) A coagulant-coated mould is dipped into a liquid dispersion of rubber.  If a dispersion of natural rubber is used it must contain less than 0.45 per cent. combined sulphur based on the dry weight of the rubber hydrocarbon.  (2) The gel-coated mould is withdrawn from the dispersion.  (3) The wet gel is removed from the mould by stretching the neck.  (4) The gel is dried.  Before drying, the gel may be distended to thin it and give it its required size with uniform wall thickness.  After drying and deflation it is vulcanized.  During removal of the gel from the mould, the net form of the gel may be conserved by keeping the interstices filled or distended with an "intervenor," as described in U.S.A. Specification 1,745,657.  A dispersion of synthetic rubber may comprise polymerized chloroprene 1 : 3 dispersion, dibutyl sebacate emulsion (this emulsion is a plasticiser and comprises dibutyl sebacate, oleic acid, wetting agent and ammonia), clay, ammonia, formaldehyde condensation product of naphthalene sulphonic acid (dispersing agent), zinc oxide, phenyl beta naphthylamine, and a solution of casein in water.  The coagulant for this dispersion comprises calcium nitrate tetra hydrate, acetone, glycerine, bentonite and water.  A dispersion of natural rubber may comprise rubber latex, potassium hydroxide, zinc stearate, zinc dibutyl dithiocarbamate, symmetrical dibeta-naphthyl-para-phenylene diamine, formaldehyde condensation product of naphthalene sulphonic acid, titanium dioxide, wetting agent and sulphur.  The coagulant for this dispersion comprises calcium nitrate tetra hydrate, acetone, glacial acetic acid, glycerine, bentonite and water.  The Specification as open to inspection under Sect. 91 contains drawings illustrating the invention.  These drawings are not present in the Specification as accepted.
Patent GB-823377-A (GB)
Title: Improvements in or relating to vaporising devices for the vaporisation of heat-sensitive substances
Inventor: CHATFIELD HERBERT WALTER
IPC: A01N25/00
Filed: 1955-08-15
Abstract: A mixture of silicon and potassium nitrate, with a mineral for modifying the chemical reaction, is used for vaporizing a pesticide (see Group VI) which is contained in a canister located in an outer canister containing the exothermic mixture and having gas outlets at one end.  The mixture may be, by weight, 2 parts silicon, 2 parts potassium nitrate and 1 part talc, china clay, powdered pumice, asbestine, barium carbonate, magnesium oxide, barium sulphate, silica, kieselguhr, mica or slate dust.ALSO:A mixture (see Group II) of silicon and potassium nitrate, with a mineral for modifying the chemical reaction, is used for vaporizing a pesticide which is contained in a canister located in an outer canister containing the exothermic mixture and having gas outlets at one end.  The pesticide may be: a ,a -bis-(p-chlorophenyl) - b ,b ,b  - trichloroethane, benzene hexachloride - (g  - isomer), p - chlorobenzyl p - fluorophenyl sulphide, o,o-dimethyl dithiophosphate of diethyl mercaptosuccinate, azobenzene, pentachlorphenol, tetrachlornitrobenzene, nicotine, dieldrin, toxaphene, p-chlor-phenylbenzene-sulphonate, or p-chlor-phenyl-p-chlorbenzene sulphonate.
Patent GB-385247-A (GB)
Title: Improvements in and relating to electric switches of the explosion chamber type
IPC: H01H33/75
Filed: 1932-08-22
Abstract: 385,247. High-tension switches. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Aug. 22, 1932, No. 23495. Convention date, Aug. 22, 1931. [Class 38 (v).] In a switch of the explosion-chamber type with the contacts immersed in water the chamber is constituted by a shaped insulating tube f, e built up of paper widened out at e (to form the explosionchamber proper in which the fixed contact is located) and restricted in tubular form at f for the entry of the movable contact g. The level of the water in the surrounding vessel a is above the level of the mouth of the tubular part of the explosion chamber by a distance at least equal to the internal diameter of the tube. The lower part of the explosion chamber may be embedded in solid insulating material h. Small openings k some of which are inclined upwards and some downwards are provided in the wall of the chamber so that the switching gases can issue into the surrounding water in the form of fine streams and be condensed. The explosion chamber may be formed with an additional chamber above it either integral with or attached to the explosion chamber proper, the small openings being formed in the walls of the upper chamber.
Patent GB-483452-A (GB)
Title: Improvements in and relating to evaporators for refrigerating machines
IPC: F25B39/02
Filed: 1937-08-27
Abstract: 483,452. Refrigerating. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 27, 1937, No. 23557. Convention date, Aug. 29, 1936. [Class 29] Evaporators.-In an evaporator as described in Specification 450,654, the ducts 28, leading from the sinuous conduit 26 to the U-tubes 25 as described in the prior Specification, each discharge into the base of one limb of a U-tube, thereby promoting refrigerant circulation. The ducts are connected to adjacent limbs of adjacent U-tubes.
Patent GB-1107452-A (GB)
Title: Reversible single phase asynchronous motors
IPC: H02P23/00
Filed: 1965-06-03
Abstract: 1,107,452. Control of A.C. motors. S. B. F. CARLSTEDT. 3 June, 1965, No. 23706/65. Heading H2J. When a switch 10 is in its neutral position, stator windings 17, 18, are equally energized so that the motor does not rotate, the circuit comprising a phase-splitting capacitor 32 and red and green lamps 40, 38, with resistive impedance. Closure of either contact 12 or 14 short-circuits one of the lamps so that either of the stator windings acts as a main or auxiliary winding respectively for reversing the motor.
Patent GB-696883-A (GB)
Title: Improvements relating to the heat treatment of low alloy steels having high creep resistance
IPC: C21D1/20
Filed: 1949-09-14
Abstract: High heat strength is imparted to low alloy pearlitic steels containing 0.6 per cent max. carbon, at least 0.7 per cent silicon and at least one of the following elements in the ranges given: 0.2 to 6 per cent chromium, 0.1 to 3 per cent molybdenum, 0.05 to 3 per cent vanadium, 0.01 to 3 per cent tungsten, titanium from 8 to 30 times the carbon content and niobium and/or tantalum up to 15 times the carbon content, the silicon content increasing with increased carbon content to a greater extent than the carbon content so that 0.6 per cent carbon corresponds to at least 3 per cent silicon, by heating to the austenite field and at least to 900 DEG C and cooling in such a manner that the austenite is completely or substantially completely converted within a temperature range lying above the martensite but below the pearlite-forming range.  The alloy may include at least one of the elements tungsten, titanium, tantalum and/or niobium and at least one of the elements chromium, molybdenum, and vanadium.  The cooling may be carried out in steps, e.g. 1000-1100 DEG C to 600-700 DEG C and then to room temperature.  It is stated that the rate of cooling depends to some extent on the silicon content.
Patent GB-1534583-A (GB)
Title: Reversal of thrust in gas turbine engines
IPC: F02K1/72
Filed: 1976-06-08
Abstract: 1534583 Thrust reversers SHORT BROS Ltd 1 June 1977 [8 June 1976] 23722/76 Heading B7G A gas turbine engine has an upstream duct portion 18 and a downstream duct portion 21 which is axially spaced therefrom and is movable by means of actuators 22 between a closerspaced position (shown) and a further-spaced position. Thrust reverser doors 26 are pivoted to the downstream portion and are linked to a point which is fixed relative to the upstream portion. The linkage 27 is such that the doors are inoperative when the downstream duct portion is in its further-spaced position, and are brought into thrust-reversing operation when the downstream portion is moved towards the closer spaced portion.
Patent GB-1221867-A (GB)
Title: Purification process for separating paraxylene from an aromatic hydrocarbon fraction
IPC: C07C7/14
Filed: 1968-05-20
Abstract: 1,221,867. Crystallizing para-xylene. SINCLAIR RESEARCH Inc. 20 May, 1968 [22 May, 1967 (2)], No. 23894/68. Heading C5E. Paraoxylene is separated from an aromatic hydrocarbon fraction predominating in C 8  aromatics and containing at least 5% p-xylene, by a process comprising the following steps: (a) cooling in a first crystallization zone, e.g. at - 60 to - 100 F., to crystallize substantially only p-xylene; (b) separating a first p-xylene cake by centrifugation; (c) washing said first cake, e.g. at 0-110 F., with toluene in an amount sufficient to provide a p-xylene cake of at least 90 mol. per cent purity on a toluenefree basis; (d) melting and recrystallizing the washed cake at a temperature higher than the first crystallization temperature, e.g. 0-40 F., to crystallize substantially only p-xylene; (e) separating a second cake by centrifugation; (f) removing the toluene from said second cake to provide a p-xylene product of at least 99 mol. per cent purity. The effluent from the toluene wash may be recycled to the first crystallization. The filtrate from the second centrifugation may be recycled, optionally after toluene removal, to the first and/or second crystallizations.
Patent GB-843779-A (GB)
Title: Improvements in harvesting machines
IPC: A01D57/00
Filed: 1956-08-02
Abstract: 843,779. Mowing machines. PULLMAN SPRING-FILLED CO. Ltd., and GADSBY, J. D. Sept. 12, 1956 [Aug. 2, 1956], No. 2392/56. Class 6(3). A harvesting machine as described in Specification 731,291 is modified by providing drum-like members 3 mounted on the vertical spindles of the cutters to assist in guiding the cut crop into the mouth of the suction conduit 16 leading to the fan or heater housing 13.
Patent GB-946645-A (GB)
Title: Method of repairing chill moulds and casting moulds
Inventor: ZIEGER ERHARD
IPC: B23P6/04
Filed: 1962-06-21
Abstract: 946,645. Welding by fusion. F. GABELIN, and W. SIMONIS, [trading as GABELIN & CO.]. June 21, 1962, No. 23953/62. Addition to 802,496. Heading B3R. In a process of reconditioning chill and casting moulds as claimed in the parent Specification, the gaps between the root welded cast rods are filled by depositing a first surfacing layer using a steel electrode and a cast iron filler rod and depositing subsequent layers using a cast iron electrode, the deposition of each layer being effected at a substantial time interval after the deposition of the preceding layer so that cracks are formed in each layer in a direction perpendicular to the layer and the inserted cast rods.
Patent GB-997852-A (GB)
Title: Aerofoil blade for use in a hot fluid stream
Inventor: DAVIES GLYN TWISTON
IPC: F01D5/28
Filed: 1964-06-09
Abstract: 997,852. Turbine blades. ROLLS-ROYCE Ltd. June 9, 1964, No. 23958/64. Addition to 939,505. Heading F1T. The blade of the parent Specification is modified in that only part of its leading edge is made of ceramic material. As shown, a gas turbine engine nozzle guide vane 10 comprises a main, metal, body portion 13 provided with cooling fluid passages 15, 16, and a silicon nitride insert 12 cemented and, if necessary, keyed into a recess in the leading edge of the blade. The insert may extend only throughout the hottest part of the leading edge and, in this embodiment, is disposed in only the radially inner half of the blade, Fig. 1 (not shown). The ceramic material may incorporate a proportion of metal particles to improve its heat conductivity.
Patent GB-1260136-A (GB)
Title: Fork lift truck
Inventor: PINKERTON WILLIAM ALEXANDER
IPC: A63H17/12
Filed: 1968-05-21
Abstract: 1,260,136. Toy fork lift truck. ADVENTURE PLAYTHINGS Ltd. 20 Aug., 1969 [21 May, 1968], No. 24093/68. Heading A6S. A toy fork lift truck comprises a wooden base board or chassis 1 mounted on a pair of rubber-tyred wheels 2 and supported on a pair of castor wheels 3 at the back. A pair of transversely spaced parallel side walls 4 runs lengthwise of the base and a top beam 5 is mounted on the side walls. An upright lifting frame comprising a pair of uprights 6, connected together by cross members 7, extends vertically upwards at the front of the base 1. A wooden fork platform 8 extends in front of the upright lifting frame and is connected at the rear with a guide member 9 which can slide up and down in the lifting frame. The top of the frame is provided with a transverse spindle 10 with a pair of pulleys 11. A cord 12 passes over the pulleys and is connected to the guide member 9. The cord is also connected to a lifting rod 13 mounted in the body and rotatable by a wheel 14 outside the body. The lifting rod has a friction pad 15 rotatable with the rod and which is engaged by another non-rotatable friction pad 16 inside the body under the action of a spring 17. Rotation of the wheel and rod against the action of the friction pads will lift the lifting platform which will be held in its raised position owing to the engagement of the friction pads. The platform may be lowered by rotating the wheel in the opposite direction.
Patent GB-360900-A (GB)
Title: Improvements in or relating to waving or curling the hair
IPC: A61Q5/04
Filed: 1930-08-12
Abstract: 360,900. Hair - waving appliances. MAEDER, F., 192, North Terrace, Adelaide, and SIMS, B. M. W., 54, Angas Road, Westbourne Park, both in Australia. Aug. 12, 1930, No. 24134. [Class 131.] Hair is curled or waved by disposing the tresses in coils or waves, impregnating with a solution of keratin either before or after such disposition, and then subjecting to heat. The keratin may be dissolved in a solution of ammonia or sodium bicarbonate, an astringent such as alcohol or an extract of witch hazel preferably being added when ammonia is employed as the solvent. In preparing the ammoniacal solution, the keratin is first dissolved in a strong solution of ammonia and alcohol, the solution being then diluted with a weaker solution of ammonia. The hair may be wound on the usual thin curling rods or on rods which are thicker than usual, or may be waved by means of tongs, in which case the solution is applied to the hair before the heated tongs are applied thereto.
Patent GB-1322412-A (GB)
Title: Method and system for analyzing a liquid
IPC: G01N11/00
Filed: 1971-04-19
Abstract: 1322412 Measuring coagulation time electrically INTERNATIONAL TECHNIDYNE CORP 19 April 1971 [12 March 1970] 24225/71 Heading G1N Apparatus for monitoring the viscosity of a liquid, particularly for determining the time taken for a blood sample to coagulate, comprises a bar magnet 15, Fig.1, immersed in the test liquid 12 in a test tube 10 and an external reed switch 17. The magnet rests freely at the bottom of the tube 10, which is rotated about its axis. Initially the magnet maintains its position in space, across the poles 17a, 17b of the switch, but when the liquid thickens sufficiently it is carried away from switch 17, whose contacts open to affect a timing circuit in system 20. The tube 10 may incorporate means preventing the magnet riding up; e.g. a vaned member (14), Fig.2A, (not shown), or indentations (14b), Fig.8 (not shown). The tube 10 is maintained at an angle as shown, Fig.1, so that magnet 15 is located by gravity, or vertically, Fig.6, on a central leg 112 with a buoyant support 114, when the switch assembly 17 can be mounted on a rotatable table 144, the switch having pole extensions 17g, 17h facing diametric poles on disc magnet 15b. The switch assembly can be replaced by a differential transformer for sensing movement of the magnet 15.
Patent GB-205072-A (GB)
Title: Improvements in shock absorbers for automobiles and other suspended vehicles
IPC: F16F9/14
Filed: 1923-09-29
Abstract: 205,072. Usines G. Derihon Soc. Anon. Oct. 7, 1922, [Convention date]. Cataracts.-A shock-absorber of the type permitting free movement of the suspension springs away from their normal position but retarding their return movement comprises a casing 1 divided into three compartments 3, 4, 5 by two fixed partitions 6, 7 which may be in one piece and a partition 8 movable in a rotary direction. The movable partition 8 is provided with a hub 9 engaging a trunnion or pivot 10 on the casing. The fixed partitions are provided with valved apertures 34, 35 and a common aperture 13 communicating with a recess 14. The hub is provided with grooves and recesses 15, 16. The partition 8 is free to move in either direction away from mid-position. Assuming a shock causes it to move to the right or anti-clockwise the fluid in compartment 3 passes into compartments 5 through recesses 15, 14 which are placed in communication by the movement and fluid passes from compartment 5 to compartment 4 through valved aperture 34. The return movement is strongly retarded since valved aperture 34 closes and the recesses 14, 16 are not in communication. In a modification, flap valves placed in a recess in the fixed partitions may replace the valves shown. Fuid-tightness is ensured by spring-controlled segments 17, 18 and side and end spring-controlled segments 25, 27 situated in a slot in the movable partition 8.
Patent GB-767092-A (GB)
Title: Transportable engine mounting
Inventor: MITCHELL MELVILLE JEROME
IPC: A01B51/00
Filed: 1952-09-29
Abstract: 767,092. Semi-portable engines. FERGUSON Inc., H. Sept. 29, 1952, No. 24290/52. Class 79(1). For use with a tractor 18 having a power lift mechanism an engine mounting comprises a transportable frame to which the engine 11 can be secured and which has members 35, 36, 37 detachably connected to the supporting structure of a machine to be driven by the engine, the frame having arms 32 for detachable pivotal connection to the links 16, 26 of the power lift mechanism. The tractor can transport the engine and frame between agricultural machines, the latter being driven from a shaft 70 on the engine through a manually controlled clutch. The machine shown is provided with brackets 12, 13 to which the frame is adapted to be adjustably and detachably connected, the frame being provided with guide members 69 to facilitate alignment between the frame and the brackets.
Patent GB-474151-A (GB)
Title: Improvements relating to dry batteries
IPC: H01M6/42
Filed: 1936-01-31
Abstract: 474,151. Batteries. MACCALLUM, F., and REDFERN, A. H. Jan. 31, 1936, No. 24366/35. Addition to 423,165. [Class 53] A dry cell or battery is enclosed in a laminated skin consisting of an undercoating of a quick drying insulating material such as a spirit varnish and a second coating of rubber, latex or rubber compound. Further coats of varnish and rubber may be added. In order to hold the cells of a battery together they may be provided with a binding of flexible and extensible material and then covered with an adhering skin of elastic and waterproof material which may be applied by spraying, dipping or brushing. Fig. 2 shows a battery comprising a number of bipolar electrodes each consisting of a zinc plate 5 carrying a coating 6 of a carbonaceous material, adjacent electrodes being separated by depolarizer 7 and a sheet 8 carrying electrolyte. The cells are held together by a rubber or other elastic tape or cord 9 and are then covered with the laminated skin 11. The battery is surrounded by packing material 13 in a box 12. The laminated skin may also be applied to a single cell of cylindrical shape as shown in Fig. 5, in which a carbon rod or plate 18 surrounded by depolarizer 19 and an electrolyte impregnated sheet 20 is enclosed in a zinc shell 21 closed at the bottom by a rubber plug 22. The cell is enclosed in the skin 11 which is removed from the terminal 23 when the cell is to be used. Specifications 447,974 and 459,945 are referred to.
Patent GB-186055-A (GB)
Title: Improvements in or relating to steam generators
IPC: F22D1/02
Filed: 1922-09-08
Abstract: 186,055. Solomiac, E., and Olier, A. Sept. 16, 1921, [Convention date]. Water-tube boilers; settings.-Banks of tubes 3, 4, Figs. 1 and 2 (Cancelled), connected to an upper longitudinal drum 1 and to lower drums 2 at the sides of the furnace enclose side chambers containing groups of connected horizontal tubes 5, the furnace gases passing through openings in the upper ends of the tube banks 3 and downwardly over the horizontal tubes. The upper and lower boxes 6, Fig. 4, of the horizontal tube groups are so connected by flange joints to the feed-pipe 9 and to the pipe connection 10 with the upper drum that the groups may be readily removed. The water passes upwardly through the tube groups 5, through the connection 10 and forwardly through a pipe 12 to the rear of the upper drum, which is fitted with a transverse partition 13. The tube banks 3, 4 open into the front of the drum. Air for combustion passes downwardly through a heater 22 at the rear of the boiler and enters the ashpit through an opening 20<a> in the back of the grate. The hot gases pass away through bottom side flues 29, then through the air heater and into the outlet flue 30. Instead of placing an air heater in the rear chamber, the chamber may be used for burning atomized fuel, the products passing into the rear of the main combustion chamber 19. Burners 36, Fig. 9, are fitted at the top of the rear chamber 35 and air heated in passages 42 at the sides and back of the chamber is discharged into the chamber through openings 41. The grate may be covered by fire-bricks 37.
Patent GB-734693-A (GB)
Title: Improvements in or relating to condensers
IPC: H01G9/10
Filed: 1952-09-30
Abstract: 734,693. Capacitor; mounting terminals. BRENNAN, J. B. Sept. 30,1952, No. 24437/52. Classes 37 and 38 (1). An open-ended can containing an electrolytic or other capacitor is sealed by a resilient part compressed to press radially against a resilient sleeve between the part and the can. In Fig. 1, the condenser roll 3 is sealed in a metal can 1 by means of a resilient disc 8 of rubber or like material pressed between two hard plastic discs 7 and 9, the edge 13 of the can being spun over to maintain this pressure. Between discs 7, 8 and 9 and the inner surface of the can is a rubber-like sleeve 11. A terminal strip 6, which may serve as the cathode of an electrolytic condenser is clamped between the resilient portions 8 and 11, and bent back to connect to a cathode ring 12 having terminals 14.
Patent GB-492330-A (GB)
Title: Improvements relating to paper holding means for accounting or the like machines
IPC: B41J11/48
Filed: 1937-02-16
Abstract: 492,330. Typewriters &c. BURROUGHS ADDING MACHINE CO. Feb. 16, 1937, No. 24484. Convention date, Feb. 17, 1936. Divided out of 492,261. Drawings to Specification. [Class 100 (iv)] Paper-supports ; sheet feeding arrangements.- In a calculating or like machine having a platen movable into and out of printing position, and paper-holding means adjustable to open-throat position when the platen is moved out of printing position, key-controlled poweractuated means is provided for moving the platen out of printing position without opening the throat, the arrangement enabling the operator to read an entry without disturbance of the sheet. When the platen is raised without opening of the throat, sheet-holding devices are automatically moved into position to prevent the sheet from falling forward. The description in the Specification is identical with part of Specification 492,261, but the claims are confined to the features set out above. Specifications 18058/07, 18320/08, 18321/08, and 18322/08, [all in Class 106], also are referred to.