baber/WOPTO huggingface dataset:
Patent GB-204576-A (GB)
Title: Improvements in blow torches
IPC: F23D14/82
Filed: 1922-11-14
Abstract: 204,576. Donigan, H. G. Nov. 14, 1922. Blowpipe burners.-A blowpipe burner comprises a casing 10 provided with passages 13, 14 extending through hollow bosses 11, 12 connected through tubes 8, 9 to preferably oxygen and acetylene gas passages 2. 3, which are preferably formed in a cast handle section 1, are connected to flexible supply tubes 6, 7, and are controlled by valves 4, 5 respectively, A hollow stem 15, having a recessed portion 25 provided with ports 26, is screwed into a screw-threaded portion 17 of the casing 10, its upper end terminating below the passage 13. A tapered flange 19 on the stem closes the lower end of the casing 10, and the upper end is closed by a flange 23 on a screw plug 22, the lower face of which terminates above the passage 13 and is preferably provided with a concave recess 24. Various types of tips 21 may be screwed on the lower end of the stem 15
Patent GB-211214-A (GB)
Title: Improvements in and relating to ignition systems for internal combustion engines
IPC: H01F38/12
Filed: 1922-11-14
Abstract: 211,214. British Thomson-Houston Co., Ltd., Parrott, E. G., and Young, A. P. Nov. 14, 1922. Transformers. - In a battery-coil ignition system in which the induction coil is enclosed in a casing 1 of moulded insulating-material, the end of the secondary winding 11 is connected to a metal inset 13 carried by an insulating block 12 mounted on the outside of the winding, the hightension terminal 15 being arranged to engage a spring clip 14 carried by the inset 13. The primary winding 10 is connected to contact pins 20 which engage socket members 21 on the cover 16, the members 21 being connected to a ballast resistance 17 of nickel wire wound on an insulator 18 carried by the cover. One or more springs 22 are provided between the coil and the cover to prevent axial movement of the coil.
Patent GB-249447-A (GB)
Title: Improvements in or relating to the sealing of filled preserving cans
IPC: B23K1/00
Filed: 1925-12-10
Abstract: 249,447. Clemens, F., and Vogl, K. Dec. 10, 1925. Soldering filled receptacles.-The aperture in the cover of a filled preserving can is closed by solder fed in strip form to a soldering-iron vertically movable in the airwithdrawal duct. A vertically movable soldering- iron b is mounted in a tube d having an airwithdrawal duct and a ring a which is applied to the cover of the can. Strip or wire solder is fed from a reel e to the iron through a pipe m by a pair of rollers h which are geared together and driven by a crank i and pawl k. The reel and rollers are mounted in an airtight casing f provided with a cover fixed thereto by screws g.
Patent GB-365529-A (GB)
Title: Improvements in rotary engines, pumps or blowers
IPC: F04C28/04
Filed: 1930-10-18
Abstract: 365,529. Rotary engines and pumps. HEMMINGSEN, T. V., 4, Ove Billes Tvaervej, Copenhagen. Oct. 18, 1930, No. 31264. [Class 110 (ii).] In a reversible rotary engine or pump of the kind comprising three inter-meshing toothed drums 2, 3, 4, of which the central drum 3 has a greater number of teeth than the outer ones, the latter are each provided with not more than six teeth. The invention is described as applied to a blower connected to suction pipes 15, 16, and delivery pipes 17, 18, the blower casing 1 being formed with valve chambers 11, 14 which communicate with the drum chamber through passages 9, 10, 12, 13 and are fitted with interconnected reversing valves 19, 20. In operation with the valves 19, 20 in the positions shown in full lines and the drums rotating in the direction of the arrows, the passages 9, 13 serve as inlets and the passages 10, 12 as outlets ; by reversing the valves 19, 20 when the direction of rotation of the drums is reversed, the direction of flow of the working fluid remains unaltered. When the blower is used with an internal-combustion engine, the reversing valves may be connected to the engine reversing mechanism. A modification is described in which the suction and delivery passages are constituted by four chambers arranged outside the actual blower casing, the reversing valves being of the sliding type and actuated by screwed spindles which are connected for simultaneous operation by chain and sprocket gearing.
Patent GB-302223-A (GB)
Title: Improvements in or relating to electrically heated furnaces
IPC: H05B3/02
Filed: 1928-10-29
Abstract: 302,223. Siemens -Schuckertwerke Akt.-Ges. Dec. 12, 1927, [Convention date]. Resistance furnaces. - The heating resistances 3 are independent of the removable cover 2 and are carried by a fire-resisting framework 4 resting on the side walls 5, 6, the resistances and the framework carrying them being divided into interchangeable sections. The cover may also be subdivided.
Patent GB-1038826-A (GB)
Title: Ferromagnetic rare earth compounds
IPC: H01F1/40
Filed: 1964-08-04
Abstract: Ferromagnetic rare earth compounds have formula A4M3 where A is terbium or dysprosium and M is antimony or bismuth.ALSO:A ferromagnetic rare earth compound having the formula A4M3 where A is terbium or dysprosium and M is antimony or bismuth, is prepared by, say, pelleting a mixture of divided A and M, heating the pellets in a sealed crucible placed in a vacuum or in an oxygen free atmosphere such as helium to a temperature suitable to start an exothermic reaction, e.g. 400 DEG  to 500 DEG  C. whereupon the temperature of the crucible is raised to about 2000 DEG  C. by the exothermic heat of reaction, and cooling the crucible on completion of the reaction. The crucible, made of e.g. tantalum or molybdenum, is sealed with a tapered plug of the crucible material to exclude as much empty volume as possible and heated using a radio frequency induction heating coil.  For additional homogenization, the crucible may be held at a temperature below the melting temperature of the sample and then cooled rapidly.
Patent GB-820686-A (GB)
Title: Improvements in or relating to fertilizer spreaders
IPC: A01C15/16
Filed: 1957-10-08
Abstract: 820,686. Fertilizer spreaders. FORD MOTOR CO. Ltd. Oct. 8, 1957 [Oct. 17, 1956], No. 31459/57. Class 6(1). A fertilizer spreader comprises a series of star wheels 34 made of yieldable rubber-like material and formed with a plurality of peripheral chambers separated by relatively narrow transverse walls, the outer ends of which make a wiping contact with the margins of openings 19 on the underside of an adjustable shutter 16 which is slidably mounted against the bottom wall 14 of a hopper 10. The wall 14 is provided with spaced openings 15 and the shutter 16 may be moved by means of a lever to alter the effective size of the openings on the wall 14 of the hopper 10. The chambers in the star wheels are closed by discs 35 mounted on each end of the wheels 34. A rotary agitator 29 is mounted above each opening in the hopper 10. The wheels 34 are each enclosed in a shoot 36 and the wheels 34 and agitators 29 are driven by chain gearing from a landwheel.
Patent GB-160515-A (GB)
Title: Improvements in or relating to horse shoes
IPC: A01L7/00
Filed: 1919-12-16
Abstract: 160,515. Addison, R. Dec. 16, 1919. Renewable calks. -Relates to renewable studs of the kind which are furnished with tapered sockets adapted to be secured on tapered projections furnished integrally on the shoe. The projections a<2>, a<3>, Fig. 6, and sockets b, b<1> are formed tapering very slightly so as to be secured together frictionally by driving. The projection at the toe part is of rectangular, elliptical, or other elongated form with the longest dimension across the shoe, the projections at the heel parts being square or polygonal. The studs may be flat-faced, or chisel shaped. Grooves b<3>, Fig. 9, formed in the inner face of the stud shown, facilitate removal by a tool, also grooves a<4>, Fig. 6, formed in the shoe serve the same purpose.
Patent GB-911784-A (GB)
Title: Improvements in or relating to street lighting columns
IPC: E04H12/18
Filed: 1960-09-15
Abstract: 911,784. Lamp standards. ABACUS ENGINEERING Ltd., and PRATT, J. W. Sept. 14, 1961 [Sept. 15, 1960], No. 31746/60. Class 20 (1). [Also in Group I] A street lighting column comprises upper and lower tubular parts which are hinged together at mid-height and includes means operated from the base of the column to turn the upper part about the hinge to bring the lamp within reach of the ground. The parts in the normal upright position are locked together and the arrangement is such that the operating means disengages the lock in its initial movement. A rod moved longitudinally inside the column by a crank or an electric motor moves the two parts of the column about the hinge, the two parts being spring loaded to return to the upright position. At the foot of the column are two vertically spaced plates bolted to the framework of a ground anchor.
Patent GB-1000854-A (GB)
Title: Improvements in or relating to electrical connector units
IPC: H01R13/424
Filed: 1963-08-12
Abstract: 1,000,854. Two-part couplings. CANNON ELECTRIC CO. Aug. 12, 1963 [Aug. 13, 1962], No. 31812/63. Heading H2E. An electrical connector unit has a body 12 with one or more apertures adapted to receive contact members 48, each member having a rearwardly directed shoulder (e.g. the collar 56), there being a truncated resilient retaining cone 36 in each aperture which expands on insertion from the rear of a contact member 48 and contracts behind the shoulder thereof to hold the member against withdrawal. The rearwardly facing shoulder 22 in each aperture of the body provides seating means for the contact member, and the cones 36 may form part of a wafer attached to the rear face of the body adjacent the enlarged portions 20 of the apertures and may have axial slits 44 (Fig. 5, not shown). The wafer may be of nylon or of an acetate, fluoroethylene or polycarbonate material, and it may be secured to the body by adhesive, by screwing or bolting, or by means of an outer casing enclosing the body and wafer assembly. A special tool for extracting the contact members is described.
Patent GB-850212-A (GB)
Title: Improvements in or relating to switching networks for communication systems
IPC: H04Q3/52
Filed: 1957-10-11
Abstract: 850,212. Automatic exchange systems. WESTERN ELECTRIC CO. Inc. Oct. 11, 1957 [Oct. 19, 1956], No. 31824/57. Class 40 (4). In a system in which connections between input and output terminals may be set up over a plurality of paths via a number of cross point gas discharge devices, marking potentials being applied to the input and output terminals to select a through conducting path, whereupon these potentials are reduced to a value sufficient merely to sustain conduction in the selected path, the potentials are applied across each tube in a high resistance circuit whereby the marking potentials are sufficient to ionize the tubes but the sustaining potentials applied to tubes in the unselected paths are insufficient to maintain the ionization. As shown connection between a subscriber 1 and a trunk 16 is effected over four gas diode switching stages by the application of marking potentials from low resistance sources 8, 22. Tubes 10A, 10B fire, due to the potential difference applied between the source 8 and one of the outputs of source 25 applied over large resistors 26. The subsequent stage tubes then fire in a similar manner. Firing cannot proceed across the " bisector " circuit comprising the rectifier 28 which is normally back biased. Similarly firing of the gas tube stages from trunk 16 towards the bisector stage occurs. When, and only when, two diodes on either side of a diode 28 (say) are conducting, that diode becomes biased in the forward direction and a large current flows in the through circuit which causes the marker by means not shown to remove the marking voltage so that only the lower sustaining voltage from source 25 is applied over low resistances 27 to both ends of the completed circuit. This holds the selected path ionized, but in the case of ionized tubes in unselected paths the sustaining current has to pass through one of the high resistances 26 and the potential drop over these is so high as to extinguish the associated diodes. Specifications 686,427, 704,108, 770,936, 805,211, 805,213, 805,214 and 814,952 are referred to.
Patent GB-488152-A (GB)
Title: Improvements in air filtering apparatus
IPC: B01D46/26
Filed: 1937-11-19
Abstract: 488,152. Air - filters. DANILS. N. Nov. 19, 1937, No. 31853. [Class 8 (ii)] In an air-filter filtering screens 6 radiating from a shaft 5 project into the path of air passing through a passage 1. The spindle 5 is rotatable in the direction opposite to that of the air current, in order to allow dirt to fall from a used screen into a receptacle 4, from which the dirt may be removed by means of a door, or by a screw 17. A space between two screens 6 is supplied by a conduit 12a with compressed air, in order to prevent the passage of air from the passage 1 to the chamber 4. In order to increase the velocity of the air the conduit 12a may be provided with nozzles 15.
Patent GB-1121275-A (GB)
Title: Improvements in and relating to processes for the production of hydrogen peroxide
IPC: C01B15/023
Filed: 1965-07-27
Abstract: In a process for the production of hydrogen peroxide by the alternate reduction and oxidation of an alkylanthraquinone the working solution containing alkyltetrahydroanthraquinone epoxides as the main degradation products is regenerated by contacting the solution, in at least a partially reduced form with catalytic quantities of compounds with an alkaline effect, and at 20 DEG -160 DEG  C.  The regeneration may be carried out in a cyclic process e.g. with a tower containing the regenerating agent situated between the hydrogenation and oxidation stages.  Alternatively a portion of the degraded working solution containing alkylanthraquinone, alkyltetrahydroanthraquinone epoxides and nuclear hydrogenated alkylanthraquinone may be repeated from the cyclic process and treated with the regenerating agents in a separate operation not included in the cycle.  Compounds suitable as regenerating agents include: alkali and alkaline earth metal hydroxides and silicates, alkali metal aluminium silicates, ammonia, amines, quaternary ammonium bases, basic ion exchangers and basic aluminium oxide.ALSO:In a process for the production of hydrogen peroxide by the alternate reduction and oxidation of an alkyl anthraquinone-containing working solution, the degraded working solution has been shown to contain alkyl tetrahydroanthraquinone epoxides, e.g. in cases where the working solution contained originally 2-ethyl anthraquinone the epoxide of 2-ethyl-5,6,7,8 - tetrahydroanthraquinone is formed. These epoxides may be reacted with alkyl-anthrahydroquinones and/or nuclear hydrogenated alkyl-anthrahydroquinones in the presence of catalytic quantities of alkaline acting substances to form alkyl-tetrahydroanthraquinones. Alkaline compounds specified are alkali metal hydroxides and silicates, alkaline earth metal hydroxides, alkali metal aluminium silicates, basic alkaline earth metal silicates, ammonia, amines, quaternary ammonium bases and basic ion exchangers.
Patent GB-174776-A (GB)
Title: Improved device for displaying advertisements
IPC: G09F11/02
Filed: 1920-11-11
Abstract: 174,776. Thorne, E. A. Nov. 11, 1920. Rotary cylinder, prism, and like apparatus.- In apparatus of the kind in which advertisements are displayed on a series of parallel rollers of triangular or like shape which are partially and intermittently rotated to change the visible face of the rollers, the intermittent partial rotation is effected by a uniformly rotating crank-pin engaging a cam having radial slots separated by sectors with concave rims. As shown in Fig. 2, the arm l continuously driven by worm gear o carries a crank-pin m surrounded by a roller which co-operates with radial slots h in a triangular cam g. The cam g is secured to the spindle f of one of the rollers e, the other rollers b being linked to the master roller e by crank-pins and a coupling-rod. The sectors between the slots h have their rims shaped to lie snugly against the rim of a disc k moving with the arm l. When the pin m enters one of the slots h, it sets the cam g gradually in motion and moves it through a fraction of a revolution, as shown one-third. A gap n is cut in the rim of the disc k to provide room for the movement of the rounded horns i of the cam. The rollers b thus move one stage forward at each complete revolution of the arm l. The mechanism may be driven by an air-fan when the apparatus is carried on a vehicle, and a flywheel may be provided so that the operation continues for some time after the vehicle has stopped. A revolving commutator may be arranged to give an illuminating effect of one or more colours. Specification 175,820 is referred to.
Patent GB-985097-A (GB)
Title: A method of and an arrangement for regulating the rate of flow and the specific gravity of pulps
IPC: B03B13/00
Filed: 1961-09-06
Abstract: 985,097. Mixing proportionally flowing liquids and solids. KLOCKNER - HUMBOLDT - DEUTZ A.G. Sept. 6, 1961 [Sept. 7, 1960], No. 32005/61. Heading B1C. [Also in Division G3] In a system for automatically controlling the specific gravity of a pulp, a measuring section 2 is supplied through a pipe 1, shaped to an arc 1a to avoid sharp change in direction, from a mixing chamber 9 having an agitator 12. The measuring section has a cross-section, such that the velocity of flow of the pulp is greater than the sinking rate of the solid particles in the pulp. Two dip tubes 7, 8 penetrate into the measuring section and constant streams of compressed air are introduced so that the pressures established in the dip-tubes are each equal to the product of immersed depth and specific gravity of the pulp. The differential pressure, which is a measure of the specific gravity, is sensed by an amplifier W which controls, through a magnetic valve 10, the supply of water to the mixing chamber 9 so as to maintain the specific gravity of the pulp constant. The flow of pulp from the measuring section passes through a partition wall 3 into a distributer 4 supplying a plurality of outlet sockets 5 each provided with a slidevalve throttle member 6. The height of the pulp in the distributer, above the level of the partition wall, is a measure of the rate of flow of the pulp and is determined from the pressure in the dip tube 8 by an amplifier N which controls a valve through a regulating unit 11 and adjusts the admission of pulp to the mixing container 9 so as to maintain the rate of flow constant.
Patent GB-992043-A (GB)
Title: Improvements in or relating to flexible pipe joints
IPC: F16L21/05
Filed: 1962-09-21
Abstract: 992,043. Pipe couplings. JOHNSTON BROS. (ENGINEERING) Ltd., A. B. BONE, and E. E. SMITH. Dec. 23, 1963 [Sept. 21, 1962], No. 32060/62. Heading F2G. A joint of the kind in which one end of a pipe 22 enters into and is overlapped by the socket 11 of an adjacent pipe 10 with a resilient lining between them comprises a resilient sleeve 23 encircling the end of the pipe 22 and a resilient sleeve 14 secured in the socket 11, the sleeves being shaped to engage each other with projections and recesses. The surfaces of the sleeves are tapered in the axial direction so that their engagement compresses them radially. In the embodiment shown in Fig. 1 the sleeve 23 has projections 24 which are engaged by axial movement with slots 21 in the sleeve 14 and then rotated into a circumferential groove 20 to lock them to the pipe 10. Alternatively the two sleeves may be formed with splines 26 (Fig. 3) or castellations (Fig. 5, not shown) which interengage. The splines may be of wedge-shaped crosss-ection or may be tapered or at an angle to the axial direction. In another embodiment (Fig. 6) the outer surface of the sleeve 16 and the inner surface of the sleeve 14 are curved in longitudinal cross-section to engage in surface to surface contact. The sleeve 14 is held by a helical rib 16 which engages in a corresponding groove 13 in the inner surface 12 of the socket 11. The sleeve on the pipe 22 may be held in a similar helical groove, or may be retained in position by an end flange 25.
Patent GB-987092-A (GB)
Title: Improvements relating to collapsible tubes
Inventor: BIDDULPH MAURICE
IPC: B65D35/38
Filed: 1960-09-19
Abstract: 987,092. Collapsible tubes. UNIVERSAL METAL PRODUCTS Ltd. Sept. 15, 1961 [Sept. 19, 1960; Oct. 28, 1960], Nos. 32087/60 and 37189/60. Heading B8D. A collapsible tube is formed with a recess between a flange 2 and projection 3 for receiving the base of a nozzle 4 of resilient plastics material The inner surface of the flange 2 has ribs 6 which bite into the nozzle base when the flange is turned over the base. A rib 7 on the shoulder 1 of the tube prevents leakage of the tube contents. The nozzle may be of polypropylene or polythene and the cap of a rigid plastics material, e.g. urea-formaldehyde resin. The base of the nozzle may be serrated on the exterior of its base flange to engage with the ribs 6.
Patent GB-1148448-A (GB)
Title: Demodulator for colour television signals
IPC: H04N11/16
Filed: 1966-07-18
Abstract: 1,148,448. Colour television. FERNSEH G.m.b.H. 18 July, 1966 [17 July, 1965], No. 32093/66. Heading H4F. The invention relates to a P.A.L. transit time demodulator in which the quadrature phase components a and b of the colour carrier F are separated by a circuit arrangement comprising a one-line-duration delay line 10 together with subtracting and adding circuits 11 and 21. If the components a and b (which are suppressed carrier signals) are detected in the customary manner (i.e. by carrier reinsertion and rectification or synchronous detection), in the presence of incoming carrier phase errors, the detection components vary in amplitude with the phase error but remain in the correct ratio, thus preserving the correct pictum live but causing a saturation error. In accordance with the invention, the saturation error is prevented by the use for detection of oppositely poled peak rectifiers 13, 14 and 23, 24 whose outputs are commoned in adding stages 15 and 25, the carrier components a and b being applied to the rectifiers during only a portion of each carrier cycle by operation of switches 12 and 22. The selected portion lies within the range Œ 20 degrees to Œ 70 degrees, and is preferably Œ 45 degrees, referred to the maximum value of the colour carrier reference signal. Variation of the phase of the incoming carrier within this range then produces no saturation error. The switches are controlled by the carrier reference signal generator 1, one output from which is established in quadrature phase by circuit 3 and another output from which is subjected to periodic phase reversals at line frequency (in step with the corresponding phase reversal of the I modulation axis used in the P.A.L. method of operation) by means of circuit 2 and switch 4. The carrier signals are converted into signals of appropriate duration to operate switches 12 and 22 by shaping circuits 5 and 6. In a first detailed circuit, Fig. 3 (not shown), each switch comprises a transistor which functions to short-circuit the signal channel except during the selected portion of the carrier cycle. In a second detailed circuit, Fig. 4 (not shown), each switch comprises a transistor whose emitter-collector circuit is connected in the signal channel, the transistor being rendered conducting for the duration of the selected portion of the carrier cycle. In a third detailed circuit, Fig. 5 (not shown), each switch comprises a rectifier bridge arrangement. Reference is made (without giving details) to the use with the invention of a system in which the phase of the signal from generator 1 is caused to follow the phase errors of the incoming carrier signal. With the use of such a system greater phase errors may be tolerated.