baber/WOPTO huggingface dataset:
Patent GB-818090-A (GB)
Title: Improvements in or relating to control spring mechanism for a pivoted arm or lever
Inventor: GREEN JAMES WILLIAM
IPC: G05G1/04
Filed: 1956-06-28
Abstract: 818,090. Door operating appliances. HENDERSON Ltd., P. C. Sept. 17, 1957 [June 28, 1956], No. 20009/56. Class 65(1) [Also in Group XXXII] A spring mechanism for controlling a pivoted lever comprising an extension or compression spring having one end fixed to a point remote from the pivot of the lever has the other end of the-spring connected to a point on the lever other than its pivotal point through a roller capable of moving along the lever and being pivotally mounted on one end of a link, the other end of which is pivoted at a point spaced from the pivot of the lever such that the roller moves towards or away from the pivot of the lever as the latter rotates through its arc of movement. Lever 10, Figs. 3, 4, pivoted at 11 is connected to door 15 by bracket 14 and to spring 22 via a roller which moves in groove 16 and turns on pin 20. Pin 20 is carried by member 18 pivoted at 19. When the door is closed arms 10, 10<SP>1</SP> of the lever are substantially vertical, spring 22 is fully extended and the roller is at the minimum distance from pivot 11. Since pins 11, 19 are not coaxial spring 22 is at an angle to the vertical and tends to swing the door into open position; a catch prevents this. On release of the catch the door swings outwards and upwards, arm 10<SP>1</SP> moves down and the roller moves away from pivot 11 so that increased leverage tends to compensate for decreased spring force. When the door is fully open arms 10, 10' are again vertical but spring 22 is fully contracted. On closing the door the above sequence is reversed. In a modification pins 11, 19 are in alignment and a pin 26 on link 18 holds part of spring 22 at an angle to the vertical when the door is closed so that opening of the door is spring assisted. Two or more positions may be provided for the attachment of the roller and spring to the link so that adjustments may be made for doors of different weights.
Patent GB-636009-A (GB)
Title: Improvements in or relating to fastener applying instruments
IPC: B25C5/02
Filed: 1947-07-25
Abstract: 636,009. Stapling hand tools. BOSTON WIRE STITCHER CO. July 25, 1947, No. 20043. Con vention date, March 29, 1945. [Class 89 (iii)] A stapling device is provided with a full-stroke mechanism comprising a staple-rest 24 at the front end of the magazine 2 below the general level thereof to support the second staple while the leading staple is being driven. A device of the pliers type comprises a magazine 2 having a cover 60, a driver arm 3 having an opening 40 to provide access to the magazine, and an anvil arm 4 pivoted together by a pin 36. An operating lever 5 is pivoted at 50 to the arm 4 and has hooked ends 51 and cam surfaces 52 to engage studs 45 within the driver arm 3. A vertically slidable driver 25, having a hole 27 to receive a pin 33 on the driver arm 3, is formed with a lower shoulder 28 to drive the leading staple and an upper shoulder 30 to push the second staple down on to the staple-rest 24 and to flatten its arched cross bar whereby its legs engage under lugs 31 on the arm 2. The arm 3 is raised by a bent spring 63 which bears on the cover 60 to hold it frictionally in closed or open position. The cover 60 when retracted by a finger piece 61 withdraws the staple pusher 69 against its spiral, spring 70 by engagement of a lug 75 on the pusher with a slot 62 in the cover 60. The arm 4 is spaced from the magazine by a spring 55 which engages around the pivot pin 50. The anvil 48 may be carried by the arm 4 or by a member pivoted on the pin 50 and urged upwards by the spring 55. Specification 627,917 is referred to.
Patent GB-762366-A (GB)
Title: Improvements relating to interconnecting electrical switches
Inventor: VINCENT ANDREW W
IPC: H01H67/26
Filed: 1953-07-20
Abstract: 762,366. Automatic exchange switches. CUNNINGHAM, SON & CO., Inc., J. July 20, 1953, No. 20049/63. Class 40 (4). In a cross-bar switch comprising resilient strips of conducting material crossing rigid bars of conducting material, an actuating bar moving in a direction at right angles to the crossing strips moves the resilient strips into contact with the fixed bars. The switch shown, which is intended for the connection of twenty-five lines with five finder link circuits and five connector link circuits, has twenty-five line plates 5, Fig. 5, mounted on frame plates 6, 7, Fig. 1, and each line plate carries a set of connecting strips 8 and 9 and 10 (not shown). Link bars 11 with which the connecting strips are brought into contact are held in windows 24 in plates of insulating material 23 bridging cut-outs in the plates 5. Upturned loops 14 from the strips engage lugs 17 on actuating bars 15 so that the strips are supported at intervals along their length, and downward movement of the bars brings together precious metal contacts 8a and 11d. The actuating bars which are supported from brackets 19 on plates 5 by resilient cantilever springs 18 are operated selectively by their appropriate finger 26 on shaft 25, in response to the combined action of an electromagnet LM which rotates the shaft 25 and an allotter magnet ALM which by pulling tape 33 moves deflector plate 31 into the path of finger 26. The finger 26 is retained in its deflected position by friction when the allotter magnet is released and returns only on the release of LM. Contacts 35, 36 at the ends of strips 9 and 10 function in a similar manner to a cut-off relay to cut off the call-initiating equipment of that line. In a modification, Figs. 8-13 (not shown) the deflector plate is replaced by a block, carried on a hairpin spring, which is moved to a position between the top of the actuator bar and the operating finger by the action of the allotter magnet. The switches described are stated to be suitable for frequencies up to 6 Mc/s.
Patent GB-1500948-A (GB)
Title: Vehicle steering linkages
IPC: B62D7/00
Filed: 1975-05-13
Abstract: 1500948 Steerable trailers D G M WHITTAKER 17 March 1976 [13 May 1975] 20070/75 Heading B7H In a steering linkage for a wheeled trailer or agricultural implement such as a discer, a rack bar 44, slidably mounted in a frame 11, is in mesh with a pinion 43 rotatable via a steering rod 41, the rack bar 44 being linked to steerable wheels of the trailer or implement. The wheel 16 is provided with a steel tyre with a pronounced centre rim which ensures positive steering.
Patent GB-413872-A (GB)
Title: Improvements in shutters for the windows of doors and buildings
IPC: E06B9/78
Filed: 1933-07-17
Abstract: 413,872. Window shutters. REPETTO, F., REPETTO, H. G., and REPETTO, E. F., 25, De Mayo Street, Buenos Aires. July 17, 1933, No. 20186. [Class 20 (iii).] A shutter for a window in a door or building comprises articulated slats 7 guided in side channels in the frame and adapted to be raised and lowered by hand-operated gears 22, 23, 25, 26, Figs. 1 and 2 and pulleys 27-29 and an endless band 30 connected to the end slot 14 and passing over a flanged guide pulley 31. The band is guided by flanges on the pulley 27 and protected from the gears by angle plates 35. An additional pulley 37 prevents downward movement of the shutter in co-operation with the pulley 29. When lowered the shutter rests between double panels of the door or a recess beneath the window and rebates on extension on the top slot 13 engages the bottom rail and cross-bar 3 to exclude weather &c. If space permits the pulleys 27-29 are arranged in the form of a triangle to increase the driving friction on the band. In a modification the end slot of the shutter is grooved and when raised is pushed over an angle iron on the bottom rail of the opening and a groove in the top slat engages the same angle iron when the shutter is lowered. The slats of the shutter are connected by bands secured to the end slats and passing through apertures in the intermediate ones. Oblique ventilation apertures are formed in the slats.
Patent GB-1340804-A (GB)
Title: Lubricating compositions for two-stroke engines
IPC: C10L1/14
Filed: 1972-05-02
Abstract: 1340804 2-Stroke lubricants LABOFINA SA 2 May 1972 [4 April 1972] 20421/72 Heading C5F Lubricants for 2-stroke engines comprise (a) 90-97 wt. per cent of a mixture of (1) 15-80 wt. per cent hydrogenated or non-hydrogenated polybutene or polyisobutylene or mixtures thereof of mean mol. wt. 250-2000; (2) 0À5-10 wt. per cent triglyceride of a C 18  unsaturated aliphatic carboxylic acid; (3) balance mineral or synthetic lubricating oil; and (b) 3-10 wt. per cent of conventional additives, e.g. lead scavenging agent, ashless detergent and calcium petroleum sulphonate. The weight ratio of triglyceride to polymer is preferably 1 : 10 to 1 : 30. Specified glycerides are glyceryl trioleate and glyceryl trilinoleate.
Patent GB-927874-A (GB)
Title: Improvements relating to vulcanisable compositions
IPC: C08K5/098
Filed: 1960-06-10
Abstract: A vulcanizable composition comprises an amorphous copolymer of ethylene with an a -olefin such as propylene or butene, an organic peroxide and sulphur as vulcanizing agents, and at least one metal soap of Zn, Pb, Cd and/or Sn with an organic acid, such as palmitic, stearic, lauric, oleic, naphthenic, resinic, bezzoic, oxynaphthoic or substituted benzoic acid.  The soap may be formed in situ; Pb and/or Zn oxides also may be present.  In examples chlorinated t-butyl peroxide and dicumyl peroxide are used in conjuction with sulphur as vulcanizing agents and additional materials present are sodium polybutadiene and kaolin.  The products are useful as electric insulation.  Specification 878,004 is referred to.
Patent GB-478671-A (GB)
Title: Improved form of air raid shelter
IPC: E04H9/10
Filed: 1936-07-23
Abstract: 478,671. Air - raid shelters. MUIRHEAD, J. T. July 23, 1936, No. 20439. [Class 20 (i)] An air-raid shelter above ground level is formed of metal-lined reinforced concrete of arc-shape in cross - section, and the ends are closed by walls of wood protected by splinter and blast-proof curtains. An outer layer of earth 13 sloping off into the ground level on each side is used to render the building inconspicuous from the air. The concrete shell 12 is lined with corrugated metal 10 and is supported at each side by footings 11. The end walls 14 are formed of tongue-and-grooved boards with stiffeners 15 and an inside lining 17 of tar felt to prevent the entrance of lethal gases. Each end wall is provided with a door 16 having a spaced splinter screen 19 formed of woven wire-wool enclosed in mesh-work and secured to the door by bolts 21 and washers 22, the doors being also lined with tar felt. The end walls are protected by sand bass 18, and the door spaces are protected by further screens 26 formed of metal framework and wire-wool filling. Rubber tubing 25 disposed between each door and its frame ensures gastightness. Air is circulated within the building by a pump 34 which draws air through an outer tube 32 and a purifying device, an outlet 33 being provided for vitiated air. The space enclosed may be divided into several chambers and heating, light and water-storage means are also enclosed within the structure. A receptacle for contaminated clothes and the like removed from persons entering the structure may be provided, and closed by a lid 35 operated by a rope 36, a drain 38 being also provided for this receptacle.
Patent GB-422860-A (GB)
Title: Improvements in or relating to the production of chromates
IPC: C01G37/14
Filed: 1933-07-20
Abstract: Chromates of metals, for example zinc, strontium, barium, and calcium, are precipitated from their solutions in chromic acid by neutralizing the free acid.  Crude materials such as oxide and carbonate ores may be used while chromates substantially free from chlorides, sulphates, and nitrates, and suitable for the preparation of protective agents, are obtained.  Mixed chromates are prepared by the use of a material containing more than one metal or compound.  An oxide, hydroxide or carbonate of the desired metal is dissolved in an aqueous solution of chromium trioxide, the solution filtered if desired, and an alkali, alone or mixed with soluble chromates, added with stirring. Alternatively, materials other than alkalis, for example an alkali phosphate or silicate, with or without soluble chromates, may be added, to produce a mixed chromate and phosphate, or chromate and silicate, for example.  The precipitates may subsequently be heated.  Examples describe the precipitation of zinc and calcium chromates by addition of caustic potash and soda solutions respectively to solutions of zinc oxide or lime in chromic acid. The precipitates, even after filtering, washing and drying may still contain potassium or sodium chromate.  Emulsifying agents and protective colloids may be incorporated with the products prior to drying, to facilitate their dispersion in oils.  The Provisional Specification refers to the preparation of a mixed chromate of strontium and zinc for anti-corrosive uses and to Specification 406,445.
Patent GB-1113104-A (GB)
Title: Improvements in decorative tiling
IPC: E04F13/08
Filed: 1965-05-14
Abstract: 1,113,104. Facing tiles. J. PINCEMIN. 14 May, 1965 [15 May, 1964; 15 April, 1965], No. 20570/65. Heading E1B. Tiles 1 of polystyrene, ceramic, glass, stone, marble or other material have slots 6 in their rear faces and are interchangeably secured in selected positions on a perforated metal wall panel 5 by means of separate studs 2a each of which is push-fitted in a selected hole 7 in the panel and in a selected position in a tile slot 6. As shown the panel 5 has a flange 8 engaging a wall bracket 14 and each hole 7 is backed by a socket 11 formed on a plastics plate 10. The back of the tile is shaped to leave an air gap Z and further air gaps Y are provided by the plate 10. The air gaps Y may be filled with spun glass or powdered cork.
Patent GB-320623-A (GB)
Title: Improvements in or relating to fuel combustion systems for furnaces or carburetting systems for internal combustion engines
IPC: F02M21/00
Filed: 1928-07-16
Abstract: 320,623. Field, A. W. July 16, 1928. Dashpots.-In a fuel combustion or carburetting system an electromagnetically-operated bell-crank lever 65 actuates a cam shaft 39 by engaging a sleeve 67 pressing on a. heavy spring 72 arranged above a piston 69, the rod 70 of which is connected to a crank arm 71 on the camshaft. The piston 69 is slidable in a cylinder 68 containing oil, water, air, or other fluid which can move easily from above to below the piston through a non- return valve 75 and can only move from below to above the piston slowly through an adjustable bye-pass valve 76. A light spring 73 is arranged below the piston 69.
Patent GB-223185-A (GB)
Title: Improvements in appliances for use in collecting latex
IPC: A01G23/14
Filed: 1924-09-01
Abstract: 223,185. Percival, S. Sept. 1, 1924. Latex, collecting. - A latex collecting spout 1 of .channel cross-section is provided with a downwardly-bent tongue 4 of less width than the spout and of such length that it cannot be driven through the bark into the wood of the tree. The spout may be connected by an intermediate portion 3, carrying if desired a tongue 5, with a ring- like holder 2 adapted to receive the body of a collecting-cup. The whole is conveniently stamped out of a single piece of sheet metal.
Patent GB-1503778-A (GB)
Title: Organic diesters and process for the production thereof
IPC: C07C67/26
Filed: 1975-05-15
Abstract: 1503778 Diesters SNAMPROGETTI SpA 15 May 1975 [17 May 1974] 20734/75 Heading C2C #,#-Diacyloxyethanols of formula wherein X and X<SP>1</SP> are the same or different and are hydrocarbyl, preferably alkyl, radicals, e.g. diacetoxyethanol, are prepared by reacting an epoxyvinyl ester with excess of a carboxylic acid of formula HOCOX<SP>1</SP> and HOCOX.
Patent GB-677112-A (GB)
Title: Hypodermic syringe construction
IPC: A61M5/178
Filed: 1950-08-22
Abstract: 677,112. Hypodermic syringes. RESNICK, L. P., and GORDON, H. C. Aug. 22, 1950, No. 20778/50. Class 81 (ii). A method of reconditioning a hypodermic syringe barrel having a broken or damaged needle-receiving tip comprises removing the broken tip from the barrel to leave the outer face of the parted wall thereof unobstructed, inserting a metallic tip in the open end of said barrel and through the opening in said end wall and sealing the tip to both the inner and outer faces of said wall. The syringe consists of a barrel 1 having a ported end wall which may be formed by removing an integral broken needle-receiving tip and is fitted with a bored shank 9 having a needle-receiving tip extending through the ported end wall. The shank 9 is provided with a flange 11 which engages the inner face of the end wall and is sealed thereagainst by a nut 16 screwed on to the shank 9 which when tightened engages the outer face of the end wall. Sealing material 15 is provided between the flange 11 and the end wall and also between the nut 16 and the end wall.
Patent GB-600728-A (GB)
Title: Pipeline corrosion inhibition
IPC: C23F11/08
Filed: 1944-10-25
Abstract: 600,728. Preventing corrosion. SHELL DEVELOPMENT CO. Oct. 25, 1944, No. 20780. Convention date, Oct. 13, 1943. [Class 123(i)] Corrosion of ferrous metal pipe lines carrying liquid hydrocarbons, e.g. crude petroleum or semi-refined distillates such as petroleum oil and coal tar distillates, by sulphide sediment, i.e. sediment containing iron polysulphides with or without loosely combined sulphur, and/or free sulphur or other compounds containing sulphur, is decreased by intermittently injecting into the pipe line an aqueous solution with a pH greater than 9, of a non-oxidising hydrocarbon - insoluble desulphurising agent, i.e. an agent capable of converting iron polysulphides to lower sulphides, so as to produce a local mixture of hydrocarbon and aqueous solution containing not less than 1 per cent by weight of added aqueous solution, the amount of solution introduced at each injection being such that the water in the local mixture retains a pH of at least 9 in passing through the section of pipeline under treatment. The desulphurising agents include sodium, potassium and the other alkali metal hydroxides, monosulphides, hydrosulphides, selenides, tellurides, hyposulphites and their formaldehyde complexes, silicates, aluminates, and arsenites, the monosulphides and hydroxides of calcium, and the monosulphides of ammonium. For example, a solution containing at least 15 per cent by weight, preferably 30 per cent or more, of sodium hydroxide is injected in quantities of from 0.5 to 100 gallons. 0.5 to 10.0 gallons of a 30 per cent solution may be required for 1,000 feet of pipeline, the injection being repeated for each 500 to 2,000 barrels of crude oil passing through the pipeline. The flow of crude oil may be interrupted for sufficient time to inject the solution, or the solution may be intermittently introduced into the oil stream at such a rate that the crude oil immediately after the point of injection contains not less than 1 to 2 per cent by weight of water in excess of its natural water content. Several injections may be made at short intervals to form a train. If the crude oil emulsifies very readily the solution may be injected when the flow of oil has been stopped; if less readily, the injection may be made into the flowing stream; if with difficulty, the solution may be introduced into the suction side of the crude oil pump, or may be premixed with some of the oil. Emulsification may be induced if the pipeline includes sharp rises and dips. The original injection may be larger in volume than subsequent injections, e.g. 5 or 10 times as large. Treatment may be supplemented by one or more mechanical scrapings. A scraper may be passed through a pipeline immediately behind an injection. One injection may be made at time intervals sufficient for the passage of 1,000 barrels of oil, e.g. 6 gallons of 25 to 30 per cent by weight of sodium hydroxide in aqueous solution may be injected every 18 hours into a 6,000 foot section of a 4-inch pipeline in which the rate of flow is about 1 ft./sec.
Patent GB-812244-A (GB)
Title: A gas filtering apparatus
IPC: B01D46/04
Filed: 1957-07-02
Abstract: 812,244. Filtering gases. METALS DISINTEGRATING CO. Inc. July 2, 1957 [July 9, 1956 ; June 12, 1957], No. 20830/57. Class 8(2). Reverse flow cleaning of a gas filter element 103, Fig. 2 located within or forming a side of a filtering chamber 100 is effected by an intermittently actuated compressed air nozzle 108 located adjacent and downstream a continuously open aperture or duct 105 in a wall 102 of the chamber 100 and adapted to induce air flow through the whole cross-sectional area of said duct or aperture in a direction opposite to that of normal filtering flow. The nozzle 108 may be located either on the discharge side or on the feed side of the element 103 as shown in broken lines downstream of the inlet duct 107. In modifications the nozzle is offset from the axis of the aperture and discharges against baffles. In a further modification nozzles 40 ... 43, Fig. 10 are located downstream open flared mouths 35 of a plurality of inward flow filter sleeves 42 passing through a horizontal partition 25 of a housing 11 having a dust-laden gas inlet 12 and a clean gas outlet 14; air from a compressor 50 being supplied to each nozzle in turn through a rotary valve 48 and lines 44 ... 47. The valve actuating motor 68 may be energised by a switch 93, 94 responsive to a pressure rise in the filtering chamber. For use with a plurality of inverted outward flow filter sleeves 116 . . . 119, Fig. 11, nozzles 124 ... 127 are located downstream of open flared mouthpieces projecting below a horizontal partition 120 of the filtering chamber 122.
Patent GB-568252-A (GB)
Title: Improvements in or relating to liquid ring pumps
IPC: F04C19/00
Filed: 1943-12-13
Abstract: 568,252. Centrifugal pumps. SCHWEIZERISCHE LOKOMOTIV-UND MASCHINENFABRIK. Dec. 13, 1943, No. 20857. Convention date, Nov. 7, 1942. [Class 110 (i)] In a liquid ring pump, the bear ings 4a of the rotor shaft 3 are connected to the liquid ring space 13 by ducts 10 and chambers 11 enclosing packing rings 8 pressed against shoulders 9 on the shaft by springs 7. The space 13 may be replenished through ports 12 and ducts 10. The circulating liquid cools and lubricates the bearings.