baber/WOPTO huggingface dataset:
Patent GB-834018-A (GB)
Title: An electric circuit breaker with a metal quenching chamber
IPC: H01H33/18
Filed: 1956-07-10
Abstract: 834,018. Arc-rupturing in switches. CKD MODRANY, NARODNI PODNIK, NOVOTNY, B., and RYBAR, V. July 10, 1956, No. 21333/56. Class 38 (5). A circuit-breaker has a metal arc-quenching chamber with at least one end bent inwardly parallel with the contacts so as to maintain the position of the arc by an electrodynamic loop. In Fig. 1, the breaker contacts 3, 4 are shown in the open position and the contact separation distance is equal to the radial clearance between the contacts 3, 4 and the end 2 of the metal chamber 1 which is connected to contact 3. When the breaker is opened, the arc between contacts 3, 4 passes from position 5 to position 6 and then one end passes to chamber 2 forming a current loop 7 which holds the arc in the area of the contact edges until current zero. In Fig. 2 both contacts are movable and both ends 2, 2<SP>1</SP> are bent inwardly so that two current loops 7, 7<SP>1</SP> are formed. A coil can be placed around the fixed contact (Fig. 3, not shown) or the contacts can be hollow and contain magnets 11 (Figs. 4, 5, 6, not shown), Fig. 7, to make the arc rotate around the contacts. The contact faces can be recessed at 12 (Fig. 7) to form a narrow wall 14 at the outer edges and narrow the current loop.
Patent GB-436255-A (GB)
Title: Improvements in or relating to hard metal compositions
IPC: C22C32/00
Filed: 1934-07-20
Abstract: A hard alloy for tools, dies, &c., consists of about 15-60 per cent of a carbide or carbides of titanium or vanadium or both, 25-82 per cent of molybdenum or tungsten or both, and 3-15 per cent of aluminium.  The sum of the molybdenum, tungsten, and aluminium is preferably at least 50 per cent.  Part of the aluminium may be replaced by magnesium or beryllium or both.  Up to 5 per cent of iron, nickel, and cobalt may be present, but preferably less than 2 per cent.  The alloy may be made by mixing the finely powdered constituents as by rolling them in a barrel, and thereafter sintering at about 3000 DEG  F., with or without a preliminary sintering at a lower temperature.
Patent GB-149531-A (GB)
Title: Improved means for forming and adjusting the height of sand golf tees
IPC: A63B57/00
Filed: 1919-08-30
Abstract: 149,531. Goodliffe, R. Aug. 30, 1919. Tee moulds.-A device for forming sand-tees of various heights comprises a conical container with a cylindrical extension in which slides a plunger 2 provided with a nut 4. By adjusting the nut the stroke of the plunger may be varied, and conquently the height of the tee formed. Specification 4346/13 is referred to.
Patent GB-1275515-A (GB)
Title: Polymeric products of alkylene-polyamine-dihydrohalides, dicyandiamide, formaldehyde and epichlorohydrin, their manufacture and their use
IPC: C08G12/04
Filed: 1970-05-04
Abstract: 1275515 Epichlorhydrin-modified polyamine dihydrohalide - dicyandiamide - formaldehyde resins CIBA-GEIGY AG 4 May 1970 [5 May 1969] 21444/70 Heading C3R [Also in Division Dl]  A resin solution is obtained by reacting in an aqueous medium (a) an alkylene-polyamine dihydrohalide wherein R 1  and R 2  each represents a C 4-6  alkylene radical, X represents a halogen atom, and n is 1, 2, 3 or 4, (b) dicyandiamide and (c) formaldehyde in molar proportions 1 : 2 : 3-5, then adding 1-3 molar proportions of (d) epichlorhydrin and heating until a 50% aqueous solution of the product has a Gardner-Holdt viscosity not exceeding T at 25 C. In Example 1 di-hexamethylene triamine dihydrochloride is heated at 85 C. with 2 molar proportions of dicyandiamide and 4 of formaldehyde, then 1 molar proportion of epichlorhydrin is added and heating continued at 40 C. In Examples 2-7 the polyamine is replaced by impure dihexamethylene triamine, hexamethylene diamine, ditetramethylene triamine, tritetramethylene tetramine, tetrapentamethylene pentamine and tetrahexamethylene pentamine. In Examples 8-15 the formaldehyde is varied to 3 and 5 moles and/or the epichlorhydrin to 2 or 3 moles per mole of amine salt, and in Example 15 the salt is the hydrobromide. The solutions are added to paper pulps.
Patent GB-798557-A (GB)
Title: Improvements in or relating to electrical testing apparatus
IPC: G01R31/50
Filed: 1955-07-25
Abstract: 798,557. Electric tests. BRITISH CENTRAL ELECTRICAL CO., Ltd., and KRIMHOLTZ, J. Oct. 25, 1956 [July 25, 1955], No. 21512/55. Class 37. In known apparatus for testing the earth connection on electrical appliances, the secondary of a loosely coupled transformer 16 is coupled through an ammeter 20 to the socket 21 for receiving the earth pin of the apparatus and, through a clip 23, to the frame of the apparatus. Thus, if the earth connection is correct, ammeter 20 indicates a heavy current and lamp 24 is extinguished. The present invention provides for a series of tappings on the transformer primary, any one of which may be selected by a switch 17 carrying a disc which indicates the voltage being used. Ammeter 20 is then calibrated directly in resistance units to indicate the resistance of the earth connection. The ammeter, voltmeter, lamp and three-pin socket for connection to the apparatus to be tested may all be mounted on the panel of a cabinet inside which are the transformer and switches. The clip and its cable are housed in a lockable compartment at the rear of the cabinet. Specification 543,660 is referred to.
Patent GB-276032-A (GB)
Title: Improvements in or relating to trailer couplings for tractor vehicles
IPC: B62D53/08
Filed: 1927-08-16
Abstract: 276,032. Alten, V. von. Aug. 16, 1926, [Convention date]. Couplings for tractors.-At the front of the trailer are mounted a. cross-shaft T and wheels V on arms S pivoted at D. The tractor is fitted with inclined rails A and guides K parallel with the rails. The guides are continued by curved resilient portions J, L. When the tractor is backed the shaft T mounts the rails and rollers Z on the arms S pass on to the guides K. When the rollers reach the parts J, L, the wheels V are raised and on further movement the shaft T is secured by a hook F<1>. In this position the rims of the wheels V may rest upon resilient stops on the rear axle of the tractor.
Patent GB-786807-A (GB)
Title: Improvements in rotary scraper apparatus for sedimentation tanks
IPC: B01D21/06
Filed: 1955-07-27
Abstract: 786,807. Treating sewage. HARTLEY, C. J. July 27, 1956 [July 27, 1955], No. 21657/55. Class 111. Rotary scraper apparatus for sedimentation tanks comprises two independent sets of scrapers, an outer set 26 scraping the outer part of the tank and an inner set 43 inwardly from where the outer set terminate, the peripheral speeds of the two sets being the same. A circular tank has an outer zone with a gently sloping floor 10 surrounding an inner zone with a more steeply sloping floor 11 leading to a central hopper 45. A cross bridge 20 pivoted at the centre of the tank and supported at its free end by the outer wall 15 of the tank where a driving gear 17 rotates it about its pivot carries the outer scrapers 26 through depending arms 25. The inner scrapers 43 which operate on the floor 11 depend from lattice work 42 carried by a cylindrical feed box 41 supported by arms 40 attached to a sleeve 34 driven by a motor 29 and worm gear at twice the rotational speed of the crossbridge 20. Further scrapers 43a on the lattice 42 may operate in the hopper 45. In modifications, the lattice 42 hangs directly from the arms 40 and the feed box is secured to the crossbridge 20 or the motor drives a large crown wheel from which the lattice is suspended. Specification 721,522 is referred to and Specification 540,432 is referred to in the Provisional Specification.
Patent GB-637324-A (GB)
Title: Starting relay for electric gaseous discharge lamps
IPC: H05B41/08
Filed: 1947-08-07
Abstract: 637,324. Control systems for space discharge lamps. SYLVANIA ELECTRIC PRODUCTS, Inc. Aug. 7, 1947, No. 21692. Convention date, March 28, 1941. [Class 38 (iv)] [Also in Group XXXVII] A starting relay for a gas discharge lamp comprises normally-closed contacts 21, 22, respectively carried by bimetal strips 11, 12 and normally-open contacts 24, 23, respectively carried by the other ends of the said strips. On connection to the supply, the lamp-electrode heating-current passes through contacts 21, 22 and a series resistor 15 which rapidly causes strip 11 to bend, thereby opening contacts 21, 22 and applying the full voltage across the lamp electrodes. If the lamp fails to strike, the voltage between the free end of strip 12 and the fixed end of strip 11 causes a glow discharge which heats strip 12 so that it bends and closes contacts 23, 24 to complete the electrode heating circuit again. The strip 12 begins to cool and contacts 23, 24 re-open, thereby re-applying the voltage across the lamp. The relay is housed in a sealed casing containing neon at 8 mm. pressure.
Patent GB-791941-A (GB)
Title: Generation of electrical power
IPC: G21D7/00
Filed: 1946-07-19
Abstract: 791,941. Nuclear reactors. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. July 19, 1946 [July 3, 1945], No. 21707/46. Drawings to Specification. Class 39(4). Uranium rods are surrounded by and insulated from collecting electrodes which, when the device is incorporated in a nuclear reactor, is given an electrical potential by the #-radiations from the fissionable material. The electrodes are of copper, aluminium, beryllium, carbon, lead and bismuth. The insulating material may be quartz, glass, mica, polystyrene or the space may be evacuated. The collecting electrodes may have the form either of cylinders concentric with the uranium rods or a cluster of separate rods surrounding and parallel with the uranium element.
Patent GB-185403-A (GB)
Filed: 1922-08-09
Abstract: Propylene thiohydrin or propylene-ethylene thiohydrin or mixtures thereof with ethylene thiohydrin are obtained by action of alkali sulphides on propylene chlorhydrin (obtained from propylene and hypochlorous acid) or a mixture thereof with ethylene chlorhydrin; examples of the process are given. Thiohydrins may thus be prepared from olefinic gas mixtures such as oil-gas, Blau gas and certain natural gases.  The products being solvents for organic dyestuffs, are of value in printing.ALSO:Propylene-thiohydrin or propylene-ethelene thiohydrin or mixtures thereof with ethylene thiohydrin, obtained by action of alkali sulphides on propylene chlorhydrin or a mixture thereof with ethylene chlorhydrin, are solvents for organic dyestuffs, and of value in printing.
Patent GB-1341919-A (GB)
Title: Sewing machine presser foot assembly
IPC: D05B27/04
Filed: 1971-04-19
Abstract: 1341919 Presser foot MEFINA SA 19 April 1971 [6 March 1970] 21758/71 Heading D1G A presser foot assembly has a main support 12 fastenable to the presser bar and a sole 16 connected to the main support by intermediate means which permit the sole to move forward or backward with the work as it is fed and has means 38 actuable by the needle bar to recentre the sole when the force on the sole by the feed dog 3 is released. The intermediate means comprise a parallelogram linkage 18, 19, 20a, 21 of which link 20a supports a member 32 presenting a notch defining cam edges 35, 36 engageable with a roller 42 on the lever 38 pivoted to support 12 at 37 and having a slot 44 engaging the needle bar clamp 5. A further roller 40 on the lever 38 is engagable with a cam surface 31 on a finger 19. When the needle is at its highest position roller 40 abuts edge 31 to press the sole against the work so that the sole moves with the fed work. As the needle and feed dog descend roller 40 passes off edge 31 and roller 42 enters the  notch to cooperate with cam edge 35 or 36, according to the particular direction the sole had been moved by the fed work, to recentre the sole. A paw 14 extending from support 12 has a side opening for the thread.
Patent GB-703295-A (GB)
Title: Improvements in or relating to control-rod mechanism for hand-guided mechanically propelled vehicles
IPC: B62D51/00
Filed: 1951-09-17
Abstract: 703,295. Controlling walk type tractors; control mechanism. HILL, T. A., and BARFORD (AGRICULTURAL), Ltd. Feb. 13, 1952 [Sept. 17, 1951], No. 21761/51. Classes 79(1), 79(2), 79(5) and 136(1) [Also in Group XXIV] In a control rod mechanism for a clutch or other device on a walk-type vehicle having a handlebar angularly adjustable up and down, the control rod is pivotally connected at one end to a control member mounted on the handlebar and is slidably connected at its other end to a member pivoted on a clutch lever or equivalent, the operative connection between the rod and the connecting member being through a stop slidably adjustable on the rod and normally locked thereon by a clamping screw. As shown the invention is applied to a two wheeled walk type tractor, the wheels 8 being driven from an engine 9 through a belt clutch of the form described in Specification 700,485, [Group XXIV], and a gear box 10. Pivotally mounted at 4 on the chassis frame 2 is the handlebar 3 carrying the control member 13, the handlebar being clampable at 5 in any desired position. Pivotally connected to the member 13 is the rod 12 whose other end passes through aligned holes in lugs 16, 17 in the stop 15 and through a hole in a swivel bolt 14 secured to the clutch lever 11. Arranged between the lug 16 and bolt 14 is a spring 18 and the lug 17 is provided with the clamping screw 19, the arrangement being such that when the clutch is disengaged and the clamps 5 and 19 released the handlebar can be adjusted to its desired position, the rod 12 consequently being adjusted relatively to the stop 15 and bolt 14 and then the clamps 5 and 19 applied. Specification 697,141, [Group XXIV], also is referred to.
Patent GB-206600-A (GB)
Title: Improvements in means for giving a pulsating motion to liquids and in applications thereof
IPC: A47J31/053
Filed: 1922-08-11
Abstract: 206,600. Burn, L. Aug. 11, 1922. Extracts and infusions, making. -In apparatus for making coffee or other infusions or extracts, in which the liquid is forced by fluid pressure up out of a chamber containing a liquid seal until the seal is broken, when the liquid returns and the cycle recommences, the liquid seal is contained in an open-bottomed dome or bell, in which the fluid pressure is generated, or into which it is introduced, contained within the treatment chamber of the apparatus. The liquid seal is formed by a pipe d dipping into a vessel e in a dome or bell b around the bottom of which are perforations c through which, as well as through the pipe d, the liquid is forced out of the bell b into an outer chamber a on the vessel being heated. A cage f on the bell b contains the substances to be treated. Heating coils &c. may be placed within the bell, and cooling and condensing devices arranged on the cover of the apparatus. A modification is described in which the pressure is produced by steam generated in an external boiler to which the condensed liquid is returned. Special constructions applicable to coffee infusions are also described.
Patent GB-270147-A (GB)
Title: Improved combined laundry washing machine and hydro extractor
IPC: D06F37/40
Filed: 1926-09-06
Abstract: 270,147. Dimatos, A., and Michal, G. D. Sept. 6, 1926. Washing-machines with rotary receptacles.- Gearing for rotarily oscillating the shaft 25 of the clothes receptacle comprises a quadrant 51 rocked about its pivot 52 by a worm wheel 57 and meshing with a pinion 53 on the shaft. The pinion can be shifted by a lever 56 out of engagement with the quadrant and into engagement with a pinion 61 on the shaft of a friction disc 60 rotated by a wheel 35 on the motor shaft, so that the shaft 25 is continuously driven for hydro-extraction. The gearing is housed in a casing attached to the stationary cylinder 10 in which the receptacle rotates. The cylinder is carried by trunnions so that it can be swung either to a horizontal position during washing, or to a vertical position for hydro-extraction.
Patent GB-718604-A (GB)
Title: Improvements in ice-cream or like freezing machines
IPC: A23G9/10
Filed: 1951-09-19
Abstract: 718,604. Ice-cream freezers. SCHOTTLE, R., [trading as SCHOTTLE KOMMANDIT.-GES., R.]. Sept. 19, 1951, No. 21977/51. Class 29 The rotary container 7 for the cream to be frozen is removably fixed at its base to a shaft 3 which penetrates through the bottom of the stationary freezing-mixture container 2 and has a square end 4 for coupling directly to the vertical shaft of an electric motor. A bell-shaped coupling device 5 enables the parts to be correctly central. The lid 10 of the ice &c. container 2 carries by a small ring 11 a U- shaped loop 12 entering down into the container 7 and carrying liquid scrapers spring-pressed on to the inner surface of the container, which is closed by a transparent central part 14 of the lid.
Patent GB-733963-A (GB)
Title: Improvements in electrical furnaces
IPC: H05B7/00
Filed: 1953-08-10
Abstract: 733,963. Automatic current control systems; control systems for consumption apparatus; inductors. BLELOCH, W. Aug. 10, 1953, No. 22006/53. Classes 38 (2) and 38 (4). In Fig. 1 an electric arc furnace 2 is supplied with alternating current through a transformer 4 in series with a saturable reactor 3. The output of a current transformer 11 is rectified and controls a bucking field 7 of a D.C. generator 6 energizing the control winding of reactor 3 so as to maintain constant furnace current. A suitable saturable reactor comprises a threelegged core 12, Fig. 2, of ferro-magnetic material carrying a D.C. winding 16 and A.C. windings 17 connected so that no alternating potential is induced in winding 16. The necessary small inductance is obtained by forming windings 17 of a number of conducting strips or a slotted pipe 19 to be equivalent to a fraction of a turn. The angle of the slots which determines the inductance may be adjustable if the strips are flexible. The A.C. windings may be connected in series by a strap 18 as shown or in parallel. The Specification also refers to three phase arrangements, manual control of saturating current, power factor' correction, and A.C. windings of low inductance formed by a largely non- inductive winding or by a straight conductor embraced by a shaped core.
Patent GB-715763-A (GB)
Title: Manufacture of ª -phthalocyanines in a dispersible form
IPC: C09B67/04
Filed: 1951-09-19
Abstract: Phthalocyanines which are metal-free or derived from a metal having an atomic weight less than 65 are ground in the crude form with anhydrous sodium ferrocyanide or anhydrous barium chloride at p 100-150 DEG C in absence of any organic liquid; the substratum being then removed with water.  Examples describe (1) the grinding of crude copper phthalocyanine with anhydrous sodium ferrocyanide, and (2) the grinding of metal-free crude phthalocyanine with anhydrous barium chloride.  Nickel, cobalt, and iron phthalocyanines are also referred to.
Patent GB-332738-A (GB)
Title: Improvements in railway signals and train control mechanism
IPC: B61L3/04
Filed: 1929-07-17
Abstract: 332,738. Williams, E. July 17, 1929. Track apparatus actuating signals on trains and for stopping trains; visual outdoor signals.-One or more track ramps engage one or more strikerarms on the train so as to actuate train controls and signals electrically and mechanically and for a timed period, the train carrying a normal "clear'' signal which is displaced by a connected "danger" signal. The ramp 48, Fig. 6, is hinged in a socket 49 and rests on a support 56. A detachable liner 59 is fitted to the ramp which is actuated either by a points-rod to a hole 61 or by a cam 52 on a shaft 54a. The shaft shown, Fig. 7, has two cams 52 and a balance-weight 53 which returns the parts to danger in case of damage. In one position, one cam has a projection 57 engaging stop 57a on the support 55 to take the pressure of the striker, while in the other position a stop 58 engages the control arm 54 which has a hole 62 for connection to signals or controls. The supports 55, carrying the shaft 54<a>, and the sockets 49 may be secured to brackets 63 clamped by bolts to the track rails 66. The striker-arms 2, Fig. 3, may have a detachable liner 2<a>, a pilot spring 28 for smooth engagement, and a spring or weight 40 as counterbalance. The arm may consist of a laminated spring, or may have fixed and adjustable springs 41, 42 to lessen the impact. The striker is hinged to the train frame 7 and has a gear wheel in mesh with the signal and control gear, or it may actuate the train devices bv a cam 8 or by direct connections to its arms. The striker actuates a. rotary shaft 4, Fig. 1, having signal indications visible through portholes. in the container-sleeve 7b and mechanical and electrical connections, such as a crank 10<a>, a cam 5, and a commutator 38, for actuating other signals and controls. A sliding shaft 1 may be actuated by the cam 5 or direct from the striker, and may itself carry signal markings and actuate other signals and controls, electrical and mechanical. This shaft is engaged by an arm 36, Fig. 4 with adjustable weight 34 and apertures for train controls and signals. The sha-ft may be locked when moved to danger position by a recess 12 engaged by a spring plunger 13 which can be withdrawn by the driver. The shaft may also be connected to one or more adjustable dash-pots 11 to secure a timed exposure and actuation. The train controls include power and brake control, while the signals may be audible and visual. Specification 325,472 is referred to.
Patent GB-220241-A (GB)
Abstract: 220,241. Lugt, G. J. Feb. 20, 1924. Cylinders receiving liquid fuel.-In addition to the usual scavenging-air ports 3, the cylinder of a double - acting twostroke engine has a scavenging-air valve 6 in a combustion chamber 5 at the cross-head end. The chamber 5 has an opening 7 for a fuel injection valve. The valve 6 mav be timed to supply an after charge of air
Patent GB-757214-A (GB)
Title: Improvements in or relating to transistor amplifier circuits
Inventor: BASSETT HARRY GORDON
IPC: H03F1/34
Filed: 1953-08-11
Abstract: 757,214. Transistor amplifying circuits. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 26, 1954 [Aug. 11, 1953], No. 22150/53. Class 40 (6). The output impedance of an amplifier is arranged to be substantially independent of the transistor parameters by the provision of feedback dependent on the output voltage and current. In an earthed emitter junction transistor amplifier, Fig. 2a, feeding a load RL, a resistor RA provides voltage feedback, current feedback being derived from a series resistor RS over resistor RB. A similar arrangement may be applied to a D.C. connected cascade amplifier, Fig. 3, feeding a load over an output transformer.
Patent GB-1269768-A (GB)
Title: Production of methacrylamide
IPC: C07C233/09
Filed: 1970-05-07
Abstract: 1,269,768. Methacrylamide. SUMITOMO CHEMICAL CO. Ltd. 7 May, 1970 [8 May, 1969], No. 22191/70. Heading C2C. Methacrylamide is prepared by neutralizing methacrylamide sulphate with aqueous ammonia to a degree of neutralization of less than 95%, cooling the neutralized mixture, collecting the precipitated crude methacrylamide and purifying it by recrystallization from water or aqueous ammonia. The methacrylamide sulphate starting material may suitably be obtained by reacting acetone cyanohydrin with sulphuric acid. The neutralization is preferably carried out at from 5‹ to 30‹ C.