baber/WOPTO huggingface dataset:
Patent GB-1279730-A (GB)
Title: Separating mechanism for the end of a roll of strip
Inventor: ROMAN ROBERT JUSTIN
IPC: G03B1/56
Filed: 1969-10-30
Abstract: 1279730 Feeding record tapes EASTMAN KODAK CO 30 Oct 1969 [31 Oct 1968] 8498/72 Divided out of 1279728 Heading G5R [Also in Division G2] A mechanism for separating the leading end of a roll of strip material, for example film on a supply reel in a cine projector or tape recorder, comprises a stripper 35 movable about pivot 70 to engage the periphery of the roll 28 and separate the free end of the film as the roll is rotated in the unwinding sense by frictional engagement of the roll periphery by a driving belt member 34 pivotable at 49, movement of strippers 35 and member 34 to their operative positions being effected by a manually operable lever 17. A drive control member consisting of a rod 129 rotatable about its longitudinal axis to "forward" or "reverse" positions as an end 132 is engaged by a cam surface 133 of interlock lever 124. When projection is completed film tension increases to depress snubber 83 whose pin 134 displaces a trigger surface 135. This displacement disengages trigger latch tooth 121 from a support plate 118 which then pivots anti-clockwise about stud 119 to displace interlock lever 124 and hence cam 133 to shift rod 129 to the "reverse" position. The movement of plate 118 also shifts lever 107 whose fingers 108, 109 open the spring-loaded halves 91, 95 of the gate as the projector enters the rewind mode. Manual control of rod 129 is possible by use of pin 134. A spring-loaded re-view handle 18 may be manually turned to pivot interlock lever 124 and so shift rod 129 to the "reverse" position. The projector then re-winds until handle 18 is released when forward drive re-commences.
Patent GB-679020-A (GB)
Title: Improvements relating to rotary fluid motors or pumps
IPC: F01C1/04
Filed: 1951-06-18
Abstract: 679,020. Rotary engines and pumps. STRAVEIT, N. N. June 18, 1951, No.. 8542/49. Class 110(ii) Balancing means for a gyratory piston 1, having a slot a, comprises distributing the piston material in such a way that the piston is balanced about its axis. The inner and outer surfaces, Fig. 1, may be eccentric to each other, or the piston may carry a disc 3, with one or more masses 4, Fig. 2, centrally or the disc may be at one end of the piston. The piston may have a portion cut out or be formed of materials having different specific gravities. Fig. 5 shows a means of absorbing out - of - balance forces through links 20, 21.
Patent GB-806977-A (GB)
Title: Improvements in printed circuits
Inventor: BRAZIER LESLIE GIDDENS
IPC: H05K3/18
Filed: 1956-03-19
Abstract: In the manufacture of a printed circuit the surface of an insulating base of resin bonded fibrous material is mechanically roughened, part or all of the roughened surface is activited by treatment with a solution containing a noble metal salt, the activited surface is treated with a reducing agent which precipitates the noble metal, and the base or part(s) thereof is treated with a hot solution containing a nickel salt, hypophosphite ions and a buffer so that nickel (containing nickel phosphide) is deposited thereon.  Specifically, the base is a laminate made from sheets of thin paper impregnated with phenolic thermosetting resin, the roughening is performed by sand-blasting, the activating solution contains palladium chloride and ammonium lauryl sulphate as wetting agent, the reducing agent is hypophosphorous acid, and the nickel plating solution is alkaline or acid and contains sodium citrate.  In three procedures described, (1) the parts of the base on which no conductor is desired are masked prior to activation, by printing on a nitrocellulose lacquer, the final nickel deposit itself forming the circuit or acting as a foundation on which a layer of another metal is deposited, e.g. copper electrolytically, or 60:40 lead-tin solder alloy by hot-dipping or electrolytically; (2) only the part of the base on which the conductor is desired is activited by a direct printing process in which a printing ink is used composed of water containing the noble metal salt and a protectve hydrophilic colloid, the final nickel deposit itself forming the circuit or acting as a foundation as in (1); and (3) the base is given a very thin nickel coating, those parts of the plated base on which no conductive layer is required are covered with a resist material, the exposed nickel coating is thickened e.g. by electrodeposition of copper, nickel or silver, or by re-immersion in the nickel-hypophosphite bath, and the resist material together with the thin nickel coating by it are removed from the base, e.g. by immersion in nitric acid or chromic acid.
Patent GB-591726-A (GB)
Title: Improvements relating to domestic fireplaces
IPC: F24B1/183
Filed: 1945-04-07
Abstract: 591,726. Domestic fireplaces. GODFREY, R. A. E. April 7, 1945, No. 8651. [Class 126] A vertically sliding door or closure 18 for an open fireplace may be retained by catch parts' 22 in the raised, lowered or intermediate positions. When fully or partly lowered it cooperates with the fire back 12 to restrict the air flow at 20. In the raised position it cooperates with the upper parts of the fire back to form a chimney throat and is retained within a casing 16. Passages 25 may be provided in the door, the rear part of which may be filled with heat insulating material. Alternatively, the door may be completely filled with such material and have no air passages. The plates comprising the door may be made highly reflective.
Patent GB-328391-A (GB)
Title: Improvements relating to electrically operated automatic delivery machines
IPC: G07F17/42
Filed: 1929-03-18
Abstract: 328,391. Hõnel, C. March 18, 1929. Coin action, multiple-coin; delivery of f tickets &c.-In a machine for the delivery of railway tickets &c. of the kind in which an operating shaft is started by the operation a switch lever and automatically stopped after a predetermined time, the switch lever is controlled by a coinoperated detent lever requiring the insertion of several similar or dissimilar coins. T'ig. 2 shows one form of the machine in which the switch lever 10 is normally prevented from moving under the influence of a spring 12 to set the machine in operation by the engagement of a ratchet rack 21 at its end with a lug 22 on a spring-pressed lever 23. The lever 23 bears against an adjustable abutment 29 or a spring- pressed lever 11 which has an upward extension 11<e> projecting into a coin channel P and a downward extension 11f projecting into the coin channel P and a second coin channel H, the channel H being dimensioned to take coins of half the value of those insertable in the channel P. The levers 11, 23 are consequently rocked twice by coins passing through the channel P and once by coins passing through the channel H, the rack teeth being brought successively into engagement with the lug 22 until when the switch lever has been deflected through a given angle the motor is started. A cam 13 operated by the shaft 2 of the delivery mechanism later engages an arm 15 on the lever 10 and restores the lever to its initial position. The number of coins inserted or yet to be inserted may be indicated by a numbered segment 31 passing behind a window 32. In a modified form of the machine for operation by a number of coins of the same value the lug 22 is carried directly by the lever 11 and the rack 21 is detachable so that it may be exchanged with another formed with a different number of teeth. Electric motor mechanism.-When the requisite number of coins has been inserted the motor is started by a contact strip 18 on a disc 16 adjustably connected to the lever 10 making connection between two spring contacts 8<a>, 9<a> in the motor circuit and a pin 19 which is carried by the lever 10 and engages an angular slot 20 in a lever 6 moves the lever 6 to release a pawl 4a carried by a casing 3 which is loosely mounted on the machine shaft 2 and is driven by the motor. The pawl 4a then engages a ratchet wheel 5 on the shaft 2 and so couples the machine shaft to the motor. The casing 3 is provided with an insulated conducting surface 7 which is in permanent contact with a spring 9 and makes contact with an extension 8 of the spring 8a for closing the motor circuit as soon as the casing 3 has commenced to move and maintaining it closed after the contact at 8<a> is broken by the cam 13 engaging the arm 15. After one revolution of the casing 3 the motor circuit is broken by the contact of the insulating material with the extension 8.
Patent GB-1136544-A (GB)
Title: Photochemical cross-linking of polymers
Inventor: DELZENNE GERARD ALBERT
IPC: C08G59/40
Filed: 1966-02-28
Abstract: 1,136,544. Photochemical cross-linking of polymers. GEVAERT-AGFA N.V. 6 Feb., 1967 [28 Feb., 1966], No. 8728/66. Headings C3B, C3P and C3R. [Also in Division G2] A process for the photochemical crosslinking of a light-sensitive composition comprises exposing to actinic light rays a composition comprising (A) a polymer carrying pendant groups which are reactive with products deriving from the photochemical decomposition of quinone diazide groups, and (B) a polymer carrying chemically combined quinone diazide groups which may or may not be the same as (A). Preferably (B) is the same as (A) and is a polymer having pendant hydroxyl groups, which hydroxyl groups have been partially reacted with a quinone diazide containing chlorosulphinyl or chlorocarbonyl groups. The examples relate to reacting the polyether of 2,2 - bis - (4 - hydroxy - phenyl) - propane and epichlorohydrin with naphthoquinone-1,2-diazide - (2) - 5 - sulphochloride or naphthoquinone - 1,2 - diazide - (2) - 4 - sulphochloride and exposing to actinic light, these polymers may be further hardened using known methods for epoxy resins. The examples also relate to the reaction of the two quinone diazides above with a partial polyvinyl butyral containing a substantial proportion of free hydroxyl groups.
Patent GB-918192-A (GB)
Title: Continuous casting of metals
IPC: B23D45/00
Filed: 1961-03-09
Abstract: 918,192. Continuous casting - machines. SOC. D'ELECTRO - CHIMIE, D'ELECTROMETALLURGIE ET DES ACIERIES ELECTRIQUES D'UGINE. March 9, 1961 [April 26, 1960], No. 8729/61. Class 83 (1). In a continuous casting process the cast bar 6 is cut to prescribed lengths by cyclically stopping the casting extraction movement and immobilizing the bar at a cutting station 10, displacing the mould 1 in a direction opposite to the extraction movement and cutting the bar during such reverse movement, then resuming the bar extraction movement while simultaneously advancing the mould back to its initial position, the displacements being performed at speeds which maintain the velocity of the casting relative to the mould at a constant prescribed casting velocity. During the halting of the bar for cutting the mould travels rearwardly at the casting velocity, and when cutting is completed the mould returns at casting velocity while extraction is resumed at twice casting velocity, continuing at casting velocity when the mould has been restored to and halted at its initial position. The bar is clamped for cutting, by hydraulic jacks 11.
Patent GB-568413-A (GB)
Title: Improvements in and relating to hoods for the cockpits of aeroplanes
IPC: B64C1/14
Filed: 1943-08-01
Abstract: 568,413. Cockpit hoods for aircraft. MARTIN, J., and MARTIN-BAKER AIRCRAFT CO., Ltd. Aug. 1, 1943, No. 8734. [Class 4] A hood for the cockpit of an aeroplane comprises a streamlined tail portion capable of sliding rearwardly and provided with quickrelease mechanism to enable the hood to be jettisoned in an emergency. In the construction shown in Figs. 1 and 2, the hood consists of a single transparent sheet 1 provided with a metal framing 2 along the edges, and at the rear portion with stiffening members 12, 13, 15 to which is secured a metal sheet 14, thus forming an enclosed tail section. Guide channels 4 are provided at the sides of the cockpit, and a centre channel 5 is mounted on the fuselage at the rear of the cockpit. These channels receive wheeled runners 20 provided with tapered plugs 23 which engage in correspondingly formed sockets 32 in brackets 30, 31 at the front corners of the hood and middle of the transverse stiffener 12 respectively. The plugs are normally retained in their sockets by means of spring-loaded taper pins 33 connected by cables 39 to a coupling plate 40. The latter is attached to a pivoted lever 41 connected by a further cable 45 to a release handle 46 at the side of the cockpit. Operation of the handle 46 causes simultaneous release of the taper pins 33 from the runners 20, to permit jettisoning of the hood. An alternative form of release is spring-loaded and held in place by a retaining pin, the release of which enables the spring to operate the withdrawal cable 45. Operating mechanism for opening and closing the hood consists of chain-and-sprocket gearing 66, 67, 68, actuated by a hand wheel 60 at the side of the cockpit and connected by a shaft 69 and universal joints to chain-and-sprocket gearing 70, 71, 72, operating the runner in the rear centre channel 5. According to the Provisional Specification, the guide channels 4, 5 may be provided with inclined portions in order that the hood may lift during its rearward movement.
Patent GB-985647-A (GB)
Title: Nuclear reactor plants
IPC: G21D5/08
Filed: 1964-03-02
Abstract: 985,647. Nuclear power plant. SULZER BROS. Ltd. March 2, 1964 [March 20, 1963], No. 8755/64. Heading G6C. In a nuclear reactor power plant, in which a turbine is supplied with steam from heat exchangers heated by reactor coolant gas, leakage of gas into the steam section is detected and the defective exchanger is automatically isolated. The leakage may be detected either by a pressure or pH sensitive device, mounted in the steam outlet ends of the heat exchangers and which supplies control signals to the short-off valves at the exchanger inlet and outlet. The turbine exhaust is connected to a condenser and preheaters. To prevent a pressure rise in the steam side of each heat exchanger beyond a predetermined limit a safety valve is mounted at the inlet. The reactor coolant is CO 2  and where a pH device is used a leakage is detected by the presence of carbonic acid in the steam section of the heat exchanger.
Patent GB-128900-A (GB)
Title: Improvements relating to Rocking Couplings for Engaging and Disengaging Transmission Gearing.
IPC: F16H1/20
Filed: 1919-04-08
Abstract: 128,900. Soc. Anon. des Etablissements L. BlÚriot. June 27, 1918, [Convention date]. Toothed gearing.-In a train of gearing, connexion is established between driving and driven shafts after the driving-shaft has been set in motion, and the train is disconnected when the driven shaft becomes the driver. Figs. 1 and 2 show the invention as applied to the starting of an internal-combustion engine by means of an electric motor. A pinion a<10> on the motor shaft a<1> gears with a wheel d<0> fixed to a shaft d journaled in a frame c pivoted about the shaft a<1>. On the shaft d or integral with the wheel d<0> is a pinion d<00> adapted to mesh with a wheel b<0> on the engine shaft b. Normally the wheels are out of mesh, the frame c abutting against a stop e. Upon starting the motor, the inertia or resistance to motion of the wheel d‹ causes the frame c to turn on the shaft a<1> until the pinion d<00> meshes with the wheel b, the resistance of the shaft b to motion maintaining the wheels in engagement. When the engine is started and the shaft b becomes the driver, the wheels are automatically disengaged. In order to render the action more certain, the shaft d is fitted with a brake drum f acted upon by spring-controlled braking pieces g<1> attached to an arm furnished with a stop e<1> for the frame c. This brake is arranged to act upon the shaft d until the wheels d<00>, b<0> are in proper mesh. In a modification, the braking pieces are mounted on the frame c and an abutment is provided for separating the pieces and so releasing the brake when the wheels come into mesh.
Patent GB-1076547-A (GB)
Title: Sign post assembly
IPC: E04H12/24
Filed: 1965-03-02
Abstract: 1,076,547. Sign posts. POLLAK STEEL CO. March 2, 1965 [March 6, 1964], No. 8936/ 65. Heading E1B. A hollow sign post built up on site comprises a pair of opposed flanged channels 13, 14 clamped together at intervals along their length by grooved saddle members 44, 54 housing wedges 49, 50 and 59, 60 engaging grooves in the flanges. In a modification, Fig. 6 (not shown), one of the wedges in each saddle member is replaced by an integral bead.
Patent GB-178302-A (GB)
Title: Improvements relating to bobbins for use in electro-magnetic apparatus
IPC: H01F5/02
Filed: 1921-03-23
Abstract: 178,302. Watson, E. A., and M-L Magneto Syndicate, Ltd. March 23, 1921. Transformers. - In bobbins having laminated cores, the core strips a are formed with notches b for engaging opposite edges of apertures d in cheeks c, which are also formed with notches e to prevent endwise insertion of the core strips in position. The strips which lie opposite the gaps e may be secured by riveting.
Patent GB-1390315-A (GB)
Title: Cleaning the blanket cylinder in an offset printing press
IPC: B41F35/06
Filed: 1973-02-23
Abstract: 1390315 Cleaning blanket cylinders DAI NIPPON INSATSU KK 23 Feb 1973 [20 April 1972] 8994/73 Heading B6C In a method and apparatus for cleaning the blanket cylinder of an offset printing machine an endless band 2 is driven parallel to the axis of the cylinder 1, cleaning fluid is sprayed on to the band from a nozzle 9 and removed by squeezing means 8 acting on the belt, the belt being movable into and out of contact with the cylinder which is first washed by the belt having the cleaning fluid sprayed on to it and then dried by stopping the flow of cleaning fluid and speeding up the belt. The blanket cylinder is rotated throughout the process. In another embodiment separate nozzles for water and an oil-dissolving solvent may be used. The belt preferably has a sponge layer on a base, the sponge layer being sewn to the base at spaced intervals giving a wavy surface configuration.
Patent GB-416799-A (GB)
Title: An improved propeller for use in the water or in the air
IPC: B63H1/12
Filed: 1933-03-25
Abstract: 416,799. Screw propellers. CARLTON, W. C., 2, Oakfield Villas, Grange Road, East Cowes, Isle-of-Wight. March 25, 1933, No. 9009. [Class 114.] A screw propeller is constructed with two or more blades in place of each blade of a normal propeller, the centre line C of the channel and the course of the fluid flow between the blades is straight from H<1> to H<2> and then passes tangentially into the arc H<2> H<3>, the surfaces B, D of the blades being parallel thereto. The outer surfaces A, E of the blades may be shaped as fairings or cambered to provide further thrust. Specification 206,676, [Class 114], is referred to.
Patent GB-760422-A (GB)
Title: A new or improved mounting for blackboards and the like
IPC: A47B97/00
Filed: 1954-03-29
Abstract: 760,422. Blackboards &c. mounting. KING- FISHER, Ltd., and CHATWIN, V. A. March 25, 1955 [March 29, 1954], No. 9050/54. Class 146(2). A mounting for supporting a blackboard or other boardlike article on a wall comprises a horizontal grooved ledge 2 and a pair of spaced parallel pegs 8, 9 extending horizontally parallel to the wall 3 and designed with one peg higher and further from the wall than the other so that when the blackboard &c. 1 is lifted out from the bottom it is loose between the pegs 8, 9. The pegs 8, 9, Fig. 2, which are spaced so they just grip the board when in position may be covered with resilient material, and the top and bottom edges may be fitted with rubber strips and rubber corners to avoid scratching and damage through being dropped. The pegs may be in the form of tubular or solid rails 12, 13, Fig. 4, connected to brackets 15, the higher rail being supported by an inverted U-portion 16. The horizontal ledge 2 includes a groove 5 for chalk.
Patent GB-1467234-A (GB)
Title: Hydraulically operable tensioners for bolts and studs
IPC: F16J10/02
Filed: 1974-04-30
Abstract: 1467234 Pistons DANIEL DONCASTER & SONS Ltd 30 April 1974 [23 Feb 1973] 9100/73 Heading F2T In hydraulic rams, e.g. for use in tensioning stud S, the pistons 48 are tapered at 50, so that they may tilt relatively to the cylinders 42. The radiused or chamfered ends of the pistons 48 are sealed by flat frusto-conical resilient discs 28. Alternatively or additionally, a radius or chamfer may be provided on the corresponding edges of the discs 28. Instead of being tapered, the pistons may be of constant reduced diameter immediately below their heads. In another form the cylinder (12, Figs. 1 and 2, not shown), is externally screw threaded to receive a collar member (16).
Patent GB-784571-A (GB)
Title: Improvements in or relating to magnetic recording equipment
Inventor: BAKER GEORGE THOMAS
IPC: G11B25/02
Filed: 1954-03-29
Abstract: 784,571. Electric digital-data-storage apparatus. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. March 17, 1955 [March 29, 1954], No. 9162/54. Class 106 (1). [Also in Group XXXV] I A magnetic drum recorder, Fig. 1, for storing digital data, comprises a bell-shaped member 32 having a central vertical spindle 47 mounted rotatably in a fixed tubular shaft 38, and is driven by an electric motor having its stator 43 on the fixed tubular shaft and its rotor 44 secured to the bell. The weight of the bell is supported by a main bearing 48, a spring 39 having a steadying effect only, and the speed of the bell is controlled by electromagnetic brakes 45 fixed to the base-plate 41, which also includes a circumferential groove 42 for supporting stacks of reading and writing heads.
Patent GB-805916-A (GB)
Title: Improvements in or relating to the production of benzene
IPC: C07C7/11
Filed: 1957-03-20
Abstract: Benzene is obtained from coke-oven gas by passing the gas through an ammonia scrubber, compressing and passing over a catalyst consisting of one or more sulphide(s) of a metal or metals of the 6th and/or 8th Group(s) of the Periodic System and recovering the benzene by scrubbing the gas with a high-boiling oil free from unsaturated constituents.  In a preferred embodiment the gas passes through a tar separator 2 and an ammonia scrubber 3 and is compressed.  Liquid is separated in separator 5 and the gas passes into the preheater 6 into which condensate from the separator 5 and crude benzene from storage tank 1 may also be sprayed.  The vapours pass through heatexchanger 8, the catalyst chambers 7, the heatexchanger 8 and into the scrubber 9 to the top of which the washing oil is supplied.  Benzene and washing oil pass to the separator 11 from which the washing oil is recycled to the scrubber and benzene passes to a cooler and storage. Hydrogen sulphide is preferably removed prior to the benzene scrubbing, also part of the benzene may be recovered by condensation prior to recovering the main quantity by scrubbing.  Pressures of 12-15 atmospheres gauge and temperatures of 350-380 DEG  C. with a space velocity of 0.5 cubic metre of compressed gas per cubic metre of catalyst per minute are preferred.  The catalyst may be a mixture of molybdenum and cobalt sulphides on active carbon.  The washing oil may be decalin, tetralin or arsol-II-II-fraction.