baber/WOPTO huggingface dataset:
Patent GB-1035986-A (GB)
Title: Power amplifier circuit
IPC: H02M3/10
Filed: 1963-05-06
Abstract: 1,035,986. Voltage multiplication. GENERAL ELECTRIC CO. May 6, 1963 [May 25, 1962], No. 17802/63. Heading H2F. A circuit to increase a D.C. supply voltage Es comprises an inductor 6 periodically shunted across the supply by a thyristor 10. When the thyristor is extinguished, the indirect E.M.F. in the inductor is added to the supply voltage and is applied through a rectifier to a load 3 in parallel unit a smoothing capacitor 9. A circuit comprising a capacitor 13 saturable inductor 14 and saturable transformer 15, 16 is provided to extinguish the thyristor. The circuit is stated to give up to twice the supply voltage depending on the on/off ratio of the thyristor. In another arrangement the thyristor 10 is rendered conductive for a fixed time and the repetition frequency is variable. The output voltage may be increased by connecting the thyristor to a tap on the inductor 6.
Patent GB-201723-A (GB)
Title: Improvements in or relating to machines for combing wool and the like
IPC: D01G19/02
Filed: 1922-06-29
Abstract: 201,723. Fisher, W., and Smith, W. Prince-. June 29, 1922. Combing-machines.-In a machine for combing wool &c. the fibre is dabbed or rolled into the teeth of a large comb circle. 2, Fig. 1, and is transferred by one or more pairs of rotating stripper discs 3, 4 to a small comb circle 1, within the large one and rotating in the same direction. The ends of the wool projecting from the circle 2 are seized by the disc 3 and transferred to the disc 4, which lays the uncombed ends over the circle 1. The fibres are drawn off from the circle 1 by rollers 7, which conduct them to rollers 8, which also serve to draw the residual fibres from the circle 2. When dealing with long fibres the fibres are drawn off from the circle 1 by a rotating stripper disc and a co-operating porcupine roller and led to a pair of rollers. The small inner circle instead of being concentric with the large circle may be duplicated. The stripper discs may be of the kind described in Specification 14014/00.
Patent GB-595992-A (GB)
Title: Improvements relating to ladders
IPC: E06C1/32
Filed: 1945-07-12
Abstract: 595,992. Convertible long and step ladders. ACCLES & POLLOCK, Ltd., and ATTWOOD, P. G. July 12, 1945, No. 17864. [Class 20(ii)] The two halves of a convertible long and step ladder each consist of two girder-like sides a made of parallel metal tubes a<1>, a<2> joined by tubular cross pieces d, the sides being connected to each other by tubular rungs (not shown). The two halves are hinged together at c and may be retained in the "long" position by a catch f, or in the "step" position by a stay h pivoted at one end and having a hook at the other. The adjacent cross pieces c<1>, Fig. 5, each form part of the hinge c and are joined by a hinge pin c<2>. The catch f is pivotally mounted on one of the cross pieces c<1> and is retained in the operative position by a spring g.
Patent GB-544790-A (GB)
Title: Improved method of and means for disposing of ash in the furnaces of vapour generators
IPC: F23J1/00
Filed: 1940-12-23
Abstract: 544,790. Pneumatic conveyers. FOSTER WHEELER, Ltd. Dec. 23, 1940, No. 18053. Convention date, Jan. 9. [Class 78 (i)] [Also in Group XII] In a furnace burning fuel producing fly ash, the ash is collected and carried to the vicinity of the furnace in a current of air where the major portion of the air is separated from the fly ash which is delivered to the furnace in a downward direction while the separated air is delivered to the furnace at a higher level. As applied to a steam generating plant, the ash is collected in hoppers 37, 38, 39 and passes through rotary valves 41 into a conduit 45 supplied with air from a blower 46 and is carried to a separator and burner 47 from which the fly ash passes downwardly through the pipe 49 to the furnace while air passes through the pipe 48 to the furnace at a higher level. The separator and burner is of the kind described in U.S.A. Specification 2,118,600.
Patent GB-104149-A (GB)
Title: Improvements in and connected with Ornamental Shades and Reflectors.
Inventor: ANDREWS FREDERICK AUGUSTUS
IPC: F21V5/00
Filed: 1916-12-15
Abstract: 104,149. Andrews, F. A., and Allen, T. G. Dec. 15, 1916. Addition to 22781/14. Shades; globes.-In a lamp shade or bowl of the type described in the parent Specification, in which a layer of textile fabric, silk, paper, or other flexible material is arranged between two glass members, one within the other, one or both of the glass members are formed with prismatic surfaces. Fig. 1 shows a glass bowl comprising an outer translucent member 5, an inner member 2 with radating prisms on its outer surface, and flowered silk &c. interposed between the two elements, which are secured together by a metal ring 6 supported preferably by a chain 7. Fig. 3 shows a glass shade in which the neck of the inner member 2 has a collar 8, and the outer member 5 rests on a ridge 9 round the periphery of the inner member. One or both members may be etched, frosted, or coloured, and the surfaces of either member may be corrugated.
Patent GB-559345-A (GB)
Title: Improvements in or relating to impact members and impact crushers employing such members
IPC: B02C13/28
Filed: 1942-12-22
Abstract: 559,345. Impact crushing apparatus. CROSS, E. J. (Nordberg Manufacturing Co.). Dec. 22, 1942, No. 18189. [Class 59] The impeller member 5 Figs. 1 and 2, of an impact crusher is formed with a number of spiral faces 6 at the junctions of which are formed cylindrical pockets 9 each receiving cylindrical extensions 22, 23 on lugs 21 depending from an impact bar 15. The lugs 21 are inserted in the pockets through recesses 13, 14 in their upper walls and the impact member is then moved endwise to cause a locking lug 25 at the rear of the bar 15 to engage the recess 14. In this position the extensions 22, 23 engage by centrifugal force lugs 12 at the upper portion of the pockets 9, the engagement being mantained at low speeds or when the impeller is at rest by wedge elements 40, 41 thrust apart by a coil spring 42 and engaging inclined surfaces 11 in a guideway at the bottom of the pocket 9. The bar 15 is formed with a radial forward. face 19, a forward edge surface 16, a rearwardly sloping face 17, and a sloping inner face 20 from which depend the lugs 21. The weages are drawn together by a central bolt when the impeller member is to be removed. Fig. 10, shows a modified construction of impact bar provided with lugs having a semi-cylindrical face 82 and downwardly extending flanges 83. The bar 80 is held in position laterally by engagement with a screw 86 on the impeller member and its centre of mass X is displaced radially by a distance Z from the centre Y of the face 82 so that the bar is thrust outwards by centrifugal force. In another modification the impact bar head 109 has a removable manganese steel wear plate 115 formed on its rear surface with hooks 116 and lugs 118 engaging the toe 117 and recesses in the head 109.
Patent GB-726142-A (GB)
Title: Improvements in the production of rubber hydrochloride
IPC: C08C19/16
Filed: 1953-07-01
Abstract: Finely divided rubber hydrochloride is produced by hydrochlorinating an acid stabilised latex and then allowing the dispersion to stand for some time, preferably at elevated temperature, finally separating the hydrochloride.  In an example Emulphor 0 was added to 60 per cent. latex and gaseous hydrochloric acid passed in according to the process of Specification 633,463, for 48 hours, after which the dispersion was heated at 70 DEG  C. for 20 minutes and coagulated by pouring into 200 grams of water at 80 DEG  C.
Patent GB-204417-A (GB)
Title: Improvements appertaining to looms for weaving towels
IPC: D03D27/08
Filed: 1922-07-04
Abstract: 204,417. Taylor, H., and Leigh, J. N. July 4, 1922. Pile-fabric looms.-The reed k, Fig. 1, is normally pressed upon by flat elongated springs a fixed to the laysword shaft b and coacting with strips c<1>. Hooks e operated by lever mechanism from the jacquard or dobby can be lowered into the path of cross pins a<1> on the springs a, whereby the reed is released. In a modification, the reed is acted upon by levers a, Fig. 7, controlled by springs a<2> so as normally to be free, but it can be held fast by the pins a' and hooks e. According to the Provisional Specification, spring levers fixed to the lower part of the reed and pivoted on the laysword are used.
Patent GB-530423-A (GB)
Title: Improvements in yarn-twisting apparatus
IPC: B65H59/06
Filed: 1939-06-23
Abstract: 530,423. Yarn-twisting spindles. WYLDE, J. R., and WILLIAMS, W. June 23, 1939, No. 18342. [Class 120 (ii)] The spindle of a yamtwisting apparatus supporting a package from which yarn is delivered, has a flange on the protruding end of the spindle with a ring disposed loosely about the spindle between the end of the package and the flange, the ring having an inside diameter less than the flange and the yarn passing from the package, between the ring and the flange to a thread guide disposed substantially centrally near the end face of the flange on the side remote from the ring and capable of rotation independently of the spindle. As shown the flange 12 is formed on a member 11 detachably screwed into the protruding end of the spindle 5 and is of approximately spheroidal shape, the member 11 has a flange 14 abutting against the end of the spindle and a loose ring 21 is disposed on the cylindrical part 13 of the member between the flange 14 and the flange 12. The yarn 3 from the package on the spindle passes between the ring 21 and the flange 12 to the freely rotatable thread guide 17 having a pigtail guide eye and a shank 18 passing freely through a bore 16 in the member 11 and prevented from coming out of the bore by a washer 19 on the end of the shank 18. The maximum diameter of the flange 12 is less than the diameter of the spindle so that the yarn package can be slipped over the flange on to the spindle. The shank 18 of the thread guide may be flattened at the top and pierced to form the guide eye. Specification 304,806, [Class 120 (ii)], is referred to.
Patent GB-613328-A (GB)
Title: Improvements in or connected with time consuming or delay action mechanism
IPC: G05G15/04
Filed: 1946-06-19
Abstract: 613,328. Speed governors. THOMAS, H. E. R June 19, 1946, No. 18378. [Class 57] A member 11 has a rack 10 engaging a pinion 9 on a shaft 2 that is connected to a pinion 4 by a free-wheel 5. A drum 3 is freely mounted on the shaft 2 and carries a gear train driving an escapement, vane or like device. The drum carries a spring-pressed plunger 12 that engages a stop formed by the end of a rib 14. In this position as the member 11 is moved, it drives the escapement &c. and its movement is retarded until an adjustable arm 21 on the shaft 2 engages the curved top 18 of a pin 17 which moves the plunger 12 to free the drum and allow unrestricted movement of the member 11 during the remainder of its stroke. On the return stroke, the free-wheel 5 permits free movement and an arm 20 on the shaft 2 engages the plunger 12 and returns it to the holding position. Buffers 15, 19 are provided at each end of the rib 14.
Patent GB-166135-A (GB)
Title: Sheet feeding machines
IPC: B65H7/20
Filed: 1920-07-03
Abstract: 166,135. Christophel, C. E. March 12, 1918, [Convention date]. Drawings to Specification. Stopping-arrangements. - In a sheet-feeding machine, the operations of a rock-shaft which actuates a sheet-registering gripper, and of a cam which actuates a sheet-detector finger and a reciprocating machine-stopping rod, are correlated by driving the rock-shaft from the cam through a Geneva stop gear. The machine is identical with that described in Specification 146,246, but the claims differ.
Patent GB-614011-A (GB)
Title: Improvements in or relating to pin fasteners
IPC: A44B9/14
Filed: 1946-07-23
Abstract: 614,011. Safety pins. NAWIASKY, M. July 23, 1946, No. 18496. [Class 43] A safety-pin, comprising a single length of spring wire a, has a hook e and an eye f formed at the midpoints of its arms b, c respectively.
Patent GB-237289-A (GB)
Title: Improvements in and relating to dental instruments
IPC: A61C3/06
Filed: 1925-07-20
Abstract: 237,289. Oettinger, R. July 21, 1924, [Convention date]. Dental instruments.-A rotary grinding tool, for use in crowning teeth for the final step in the production of a cylindrical stump, consists of a thin-walled steel, brass, or other metal cup c riveted, or secured by a screw b, to a short spindle a, and provided with a layer or carborundum or other abrasive material on its inside. The tool may be mounted in an angular handpiece driven by a flexible shaft g, or a straight hand-piece, may be used. The abrasive may be applied to the internal surface of the cup in the form of a paste., or may be permanently attached thereto as in an ordinary grinding wheel. The gums may be forced back by a rubber washer to enable the tooth to be ground slightly beyond the normal surface of the gums.
Patent GB-1044225-A (GB)
Title: Card or ticket holder and dispenser magazine
IPC: G07B3/04
Filed: 1964-05-05
Abstract: 1,044,225. Card holders and dispensers. S. B. TOMLINSON. May 4, 1965 [May 5, 1964], No. 18516/64. Headings A4G and A4T. A card or ticker holder and dispenser comprises a block of synthetic sponge with an internal spring and a metal end cap, which is placed in an open topped box having a polished outwardly extending lip at the open end. A further box with an open side and end enters the first box and surrounds the sponge, the closed end overlapping the lip and being provided with a finger hole whereby cards between the cap and the finger hole can be removed over the polished lip. The open topped box fits flush into a table top and the spring may be omitted.
Patent GB-239025-A (GB)
Title: Automatically operated fastenings for the doors of railway carriages, and the like
IPC: B61D19/00
Filed: 1924-08-05
Abstract: 239,025. Foster, J. E. Aug. 5, 1924. Railway - carriage doors and the like, fastening automatically. -Fastenings for doors of high-speed vehicles are operated automaticall and simultaneously by vertical rods turned in recesses in the doorpost by a system of rods and levers operated from an axle of the wheels by a rotating sleeve with a projection riding along an inclined slot in a fixed sleeve to actuate a disc against its spring to move a piston which actuates the system of rods and levers. Fig. 1<A> shows a plan of the actuating mechanism when the doors are unbolted. When the axle A rotates, a projection c on the sleeve C rides along one of the inclines a of the slot cut in the sleeve B fixed to the axle. A band brake i comprising a flexible strip anchored at one end to the pin g and at the other to a relatively fixed tube K, clamps the sleeve C against rotation relatively to the disc D so that as the sleeve C moves owing to its projection C travelling down the incline a, the disc D is forced forward against its spring E, moving the piston G, which is rigidly attached to the disc D, to actuate the links H, and turn the levers I through a quarter of a circle. The levers I rotate shafts M, telescoped at N to allow for the spring mounting of the carriage, which in turn rotates levers O to move links P which actuate a pair of long bars Q running one on each side of the carriage. The bars Q actuate levers R to turns rods S housed in slots in the door-posts, to actuate the doorfastenings 1. When the disc D has moved forwards to its limit and the projection c is in contact with the face b of the slot in the sleeve B, the plate h carried in a bracket e on the sleeve K has encountered the stop n and is moved back relatively to the bracket so that a slot f<2> in the plate moves the pin g to release the brake-band i. The sleeve C is then free to rotate with the sleeve B, anti-friction rollers d on the sleeve C engaging the disc D to prevent wear. When the train slows down, the force of the compressed spring E is greater than that tending to keep the projection C in the angle between the faces a, b and the disc D and sleeve C are forced back to their initial positions, the movement of the disc D and piston-rod G restoring the bolts to the inoperative position and setting the apparatus ready for locking when the wheels are again set in motion on the starting of the train. The disc D has two sleeves K sliding on rods J mounted below the carriage, to guide the disc during its sliding motion.
Patent GB-355864-A (GB)
Title: Improvements in furring strips for metallic lathing
IPC: E04F13/04
Filed: 1930-06-18
Abstract: 355,864. Furring strips for lathing. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Pittsburgh Steel Co. ; Union Trust Building, Pittsburg, U.S.A.) June 18, 1930, No. 18593. [Class 20 (iv).] Furring strips for securing metallic fabrics to metal or wood framework of walls and ceilings, consist of metal bars 4 of V or channel section, or flat bars with stiffening ribs and grooves, to which are welded prongs 5. The bars are placed with the recessed side against the framework 10, and are secured thereto by wire, or clips 6, or staples. The prongs 5 are pushed through the lathing 2 and clinched over.
Patent GB-827387-A (GB)
Title: A pulverized fuel combustion chamber for a gas turbine
IPC: F02C3/36
Filed: 1956-06-15
Abstract: 827,387. Gas turbine plant. JERIE, J., and FENCL, Z. June 15, 1956 [June 16, 1955], No. 18601/56. Class 110 (3). [Also in Groups II and XII] A pulverized fuel combustion chamber for a gas turbine comprises a flame chamber 8, a mixing section 9 terminating in a distributer 10 leading to symmetrically disposed cyclone separators 11, a collecting chamber 12 and an outlet chamber 13 and is formed as a unit disposed within an outer casing 1 which is supplied with air under pressure. The flame chamber 8 is built up of segmental finned plates 14 and pulverized fuel carried by air under pressure is supplied thereto through pipes 16 having tangentially-directed outlets into the flame chamber. Air under pressure is supplied to the jacket space through inlet 2 and enters the flame chamber through ducts 17, also through tangentially-directed slots between the wall segments 14. Liquid fuel for starting is supplied through injectors disposed in the ducts 17. The combustion gases pass upwardly into the mixing section 9, ash being deposited in the receptacle 6, and further air is admitted tangentially into the mixing chamber through spaces between the segments forming the wall thereof. The mixture of combustion gases and air passes into a chamber 10 and is distributed from there into a plurality of cyclone separators 11 disposed in the space between the mixing section 9 and the outer casing 1. The cleaned combustion gases pass upwardly into a collecting chamber 12, the ash being deposited in chambers 20 and blown out from there by combustion gases; distributers 21 at the bottom of the chambers are supplied with air under pressure to prevent the formation of deposits. The gases pass from the collecting chamber 12 into the outlet chamber 13 and thence through the outlet pipe 24 to the turbine. The walls of the chambers 12, 13 and of the outlet pipe 24 are all provided with slots for the tangential introduction of cooling air. A pipe 25 extends through the upper cover 4 to the distributing chamber 10 and is provided with tangential outlets 26 for the supply of cooling air to the walls of the chambers.
Patent GB-363679-A (GB)
Title: Improvements in or relating to method of producing artificial fuel and the product produced thereby
IPC: C10L9/10
Filed: 1930-06-18
Abstract: 363,679. Composition fuel. ROBERTS, A. A., 53, West Jackson Boulevard, Chicago, U.S.A. June 18, 1930, No. 18668. Convention date, June 28, 1929. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. [Class 50.] In agglomerating fuels, which may include anthracite and bituminous coal, peat, lignite, sawdust, tan-bark, coke, charcoal, petroleum, coke, &c., with mineral binders, which may include natural constituents of the fuel or artificial additions such as hydraulic cement, a chemical accelerator of combustion such as magnesium chloride is added in proportion sufficient to compensate for the retarding action of the binder and produce a specified rate of combustion. Toughness and hardness of the fuel are controlled by varying the amount of binder. Diagrams are provided to show how fuels of specified combustion rate, toughness, and hardness may be produced and the fineness of material and mould pressures required. The material is desirably subjected to the' direct thrust of a plunger in moulds of uniform or preferably tapering cross section in which perforations for the release of gas or moisture may be provided.
Patent GB-825378-A (GB)
Title: Improvements in or relating to potato planting machines
Inventor: WEITZ OTTO
IPC: A01C9/00
Filed: 1956-06-15
Abstract: 825,378. Potato planting machines. TROSTER, H. [trading as TROSTER, A. J. [firm of]]. June 15, 1956 No. 18673/56. Class 6(1). A potato planting machine comprises a number of planting wheels 24 each mounted on a tool frame 26 attached by parallel links 29 to a wheeled chassis 1, the frame 26 being provided with a furrow opening share 27 and has furrow closing discs 28. The rear of each frame 26 is connected to a lifting lever 4 through a control bar 32, a spring 33 enabling the pressure exerted by the discs on the ground to be adjusted. Each wheel 24 is formed with compartments and is provided with a cover plate 37 to prevent potatoes dropping out of the compartments, the wheels being driven by gearing from one of the land wheels 10. A potato hopper 38 is associated with each wheel and is pivoted to the chassis 1 and to the top links 29. Seats 3 are provided for operators who transfer potatoes from the hopper to the compartments in the wheel.
Patent GB-831972-A (GB)
Title: Improvements in and relating to a vacuum cleaner with a dust separation filter
IPC: A47L9/10
Filed: 1956-06-15
Abstract: 831,972. Suction cleaners. FISHER & NIELSEN A. S. June 15, 1956 [July 14, 1955], No. 18692/56. Classes 8(1) and 8(2). In a canister type suction cleaner comprising a filter 3, Fig. 1, located between the motor fan unit 2 and a tangential dust-laden air inlet 4 of the cleaner casing 1, the inlet 4 discharges through a funnel-shaped nozzle 12 into a filter bag 6 having its mouth spaced therefrom. As shown the bag 6 is secured at its month to a connection 13, Fig. 2 located along the side of a chamber formed between the bottom 9 of the casing 1 and a detachable bin 10 ; the casing bottom 9 housing an aperture 19 through which the so filtered air passes to the inlet chamber formed by the casing 1. An arcuate wall 16 together with the bottom 9 and the bin 10 forms a conduit surrounding the bag 6.
Patent GB-686563-A (GB)
Title: An improved chair cover
IPC: A47C7/35
Filed: 1950-07-27
Abstract: 686,563. Mattresses &c. TOOTHILL, Ltd., R. W., and TOOTHILL, R. W. March 12, 1951 [July 27, 1950], No. 18780/50. Divided out of 686,555. Class 52 (iv) A replaceable cover for use with chairs having resilient cushions &c. comprises a seat portion 10 having relative wide margins 10a which are adapted to be attached to the frame below the seat by quickly attachable and detachable securing means the securing means being arranged so that the edges of the cover have to be pulled down before securing can take place. The frame of the chair may be of any material but is preferably of tubular metal and the securing means comprise eyelets on the edges of the cover adapted to be engaged with studs 11 mounted on the underside of the frame members. The drawing shows the invention applied to a cover extending over the back as well as the seat and the rear 10b of the seat cover is formed as tongues secured to the frame over studs 11 while the lower end of the rear of the back cover is also formed as a tongue 9a provided with eyelets 9b also securable to the studs 11. The cover part 15 may be quilted. Specification 686,555 is referred to.