baber/WOPTO huggingface dataset:
Patent GB-596900-A (GB)
Title: Improvements in and relating to container treating machine
IPC: B67B7/12
Filed: 1945-08-03
Abstract: 596,900. Opening bottles &c. AMERICAN CAN CO. Aug. 3, 1945, No. 20040. Convention date, July 19, 1944. [Classes 94 (i) and 125 (ii)] Sterilized containers for holding milk &c. which are kept closed by hinged closures preparatory to filling, are opened on their way to a filling station by a process in which the closures are held in a relatively fixed position while the containers hinge about the closures in passing from a horizontal to a vertical position. The containers A, which may be of the kind described in Specification 470,098, are fed from a magazine by a feed-in star wheel 14 and a feed turret 64 formed with U-shaped recesses 65, Fig. 4, not shown, and when the containers pass to the bottom of the turret 64 they are transferred to pivoted cradles 84 carried by a turret 82 which rotates about a vertical axis. As the container A is received by the cradle 84 it is moved horizontally by a spring-controlled pin 72 which is moved axially by a fixed cam 78 which engages an extension of the pin which normally protrudes beyond the casing in which the pin is mounted. The movement of the container A causes a valve member 103 to connect a suction cup 97 to a source of reduced pressure, and the lid B of the container A is held to the suction cup 97. The turret 82 carries five suction cups and the valves 103 of each of these can be connected to a suction header 114, Fig. 3, connected to a central pipe 86 and a pipe 121 connected to a source of reduced pressure. As the turret 82 rotates the cradle 84 is swung by means of a fixed grooved cam 132 engaging a roller 131 on the cradle from its horizontal to a vertical position and finally when in the vertical position shown in Fig. 7, the lid B of the container is open so that the container can be filled when it is passed by conveying devices to a filling station. Preparatory to this the valve 103 is operated to cut off the vacuum by a cam surface 155, Fig. 7, acting on the valve 103. As the container swings to the vertical position it is guided by rails 137, 153, 151, Fig. 1, of which the rail 151 which at first guides the side of the container finally acts to support the bottom thereof when the vertical position is reached.
Patent GB-1001490-A (GB)
Title: Improvements in the treatment of iron sulphate heptahydrate
IPC: C01G49/06
Filed: 1957-06-25
Abstract: A mixture of solid iron sulphate heptahydrate FeSO4.7H2O (which contains residual moisture or which has been moistened, and which may be derived from the liquor used in the pickling of steel) and solid calcium oxide is turned over until the setting of the sulphate by the calcium. The calcium oxide may be in a pulverized form, in a stiochiometric excess, or in a 1 : 1 weight ratio with the sulphate. The atmosphere over the mixture may be evacuated during the turning over of the mixture, preferably after the evolution of steam.  Oxygen may be passed over the mixture, or the mixture may be heated externally, and ferric oxide, Fe2O3, may be formed.  The mixture of ferric oxide and calcium sulphate may be separated by wet magnetic separation.
Patent GB-906524-A (GB)
Title: Semiconductor switching devices
IPC: H01L23/58
Filed: 1960-06-08
Abstract: 906,524. Semi-conductor devices. WESTING- HOUSE ELECTRIC CORPORATION. June 8, 1960 [June 10, 1959], No. 20092/60. Class 37. A high-current bi-stable switching device comprises an NPNP semi-conductor body having the emitter region surrounding the contact to the base region, the metallic contact to the end regions opposite the emitter extending over the whole flat surface of that end region and joined thereto ohmically by means of an alloy. Figs. 6 and 7 show a NPNP device comprising a silicon body having an N-type annular emitter layer 22, P-type base layer 14, N-type region 12 and P-type layer 16. The device is produced by first providing P-type layers 14 and 16 between 0.75 and 2.5 mils. thick by diffusing acceptor material into top and bottom surfaces of an N- type wafer the edges of which are masked with wax. The impurity may consist of In, Ga, A1 or B and heated in a part of a diffusion furnace at 600 C. to 1250 C., to provide a desired vapour pressure, the silicon wafer being at a hotter part of the furnace where diffusion is effected. Alternatively layers 14 and 16 may be produced as alloy junctions. The N-type emitter zone 22 is produced by alloying an annular foil consisting of 99.5% Au and 0.5% Sb at 650-750 C. to P-layer 14. Base contact 28 to P-type zone 14 is provided by heating a pellet or foil comprising for example, 99% Au and 1% B, Au-Ga, or Ag-Sn-In or 90% Ag and 10% In in contact with the region. Metallic contact 34 is provided by fusing a disc of Mb, W, Ta or alloys thereof to P-layer 16 by means of an A1-B alloy layer 32. A similar metallic contact is provided to the emitter region 22, the emitter contact being slightly smaller, and the metallic contact slightly larger than the corresponding layer. The device is hermetically sealed in a metal casing comprising glass plugs for emitter and base leads. The easing may consist of brass, copper, steel or aluminium and contact 34 may be nickel coated and soldered to the case by an Ag, Pb, Sn solder. The casing has a cooling effect and may alternatively consist of silicone or epoxy resin. Operating characteristics of the device are given. The semi-conductor may consist of Si, Ge, SiC, Ga As, Ga Sb, In As, or In Sb.
Patent GB-462642-A (GB)
Title: Improvements relating to the prevention of scale deposits in service hot-water supply systems
IPC: B23F23/12
Filed: 1936-07-21
Abstract: 462,642. Heating water; preventing incrustation. GOLDSTERN, W. July 21, 1936, No. 20153. Convention date, July 26, 1935. [Class 64 (i)] [Also in Group XVIII] To prevent formation of scale in a hotwater supply system having a storage chamber A in which the water is heated by a hot medium circulating through a coil B, a filter F of wood-wool or similar material is provided at the top of a box-shape baffle E having an open bottom and placed over the heating coil.
Patent GB-1105549-A (GB)
Title: Galvanic cells
Inventor: KEATING HUGH PAUL
IPC: H01M10/32
Filed: 1965-05-13
Abstract: 1,105,549. Sealed primary cells. UNION CARBIDE CORPORATION. 13 May, 1965 [June 3, 1964], No. 20161/65. Heading H1B. A sealed primary cell having a cathode of silver oxide and a cathode of zinc or of lithium and employing a gelled alkaline electrolyte, has an addition of chromium in contact with the container. This is said to increase the shelf life of the cell. The chromium may be present as a coating on the container or as an alloy or a compound and may be in an electrode or in the electrolyte.
Patent GB-948928-A (GB)
Title: Process for the oxidation of nitric oxide
IPC: C01B21/26
Filed: 1960-06-08
Abstract: Nitric oxide is oxidized to nitrogen dioxide by contacting a gas containing NO, free O2, and water vapour with a catalyst containing Pt, Pd, Rh, Ru or mixtures thereof, supported on a specified carrier at 200-450 DEG  C., and a space velocity of 5000-100,000 hr.-1.  The catalyst is 0.1-2% metal deposited on activated Al2O3, SiO2 gel, diatomaceous earth, pumice, asbestos, TiO2, clay, or CaCO3 in the form of pellets, granules, or powder.  The gas may be waste from HNO3 plant also containing N2 and may be oxidized at atmospheric -100 p.s.i.g. pressure.  The NO2 produced may be absorbed in H2O or 10% HNO3.  The process may be used as an analytical method for determining NO in gases, by incorporating excess O2, and continuously recording the NO2 content by a heated photometer tube. Specifications 849,842, 883,944, 883,946, 916,693 and 918,300 are referred to.
Patent GB-1333515-A (GB)
Title: Presser foot for a sewing machine
IPC: D05B27/24
Filed: 1972-05-02
Abstract: 1333515 Presser foot MEFINA SA 2 May 1972 [17 May 1971] 20251/72 Heading D1G A presser foot assembly comprises a part 4 for fixing to a presser bar 5 and a part 1 provided with the presser foot 2 and movable relatively to part 4 by an actuating member 11, 12, an elastic element 7 being provided between the actuator and the part 4. The foot 2 is provided with a cross bar (28, Fig. 3 not shown) engagable in a groove (29) in the portion 1 and retained therein by a spring (30). As shown the foot is a darning foot, but other feet such as a zig zag stitching foot (33) may be readily substituted. The portion 1 is tubular and slides vertically in a hole 3 in the fixed portion 7 under the action of crank pin 12 which engages a shoulder 13 to raise the foot or a slidable bush 6, surrounding spring 7, to lower it. The crank pin extends from an angle 10 rotatable manually by knob 11 or by a lever 19 engagable by the needle bar clamp 24 to press down on the work, as the needle descends, during darning, when the work is supported on a plate 23 which covers the feed dog. The axle and its crank are returned, to lift the presser foot, by return spring 14. Notches (27) are provided on part of the knob and are engagable by a spring 26, when the axle has been sufficiently rotated, to hold the axle and the presser foot in a chosen position. In a modification the crank pin is eliminated and a pin, extending from part 1 through a vertical slot in part 4, engages a selected one of notches on the slot edge.
Patent GB-205873-A (GB)
Title: Improved machine for pulverising or grinding coal and other materials
IPC: B02C13/00
Filed: 1922-07-25
Abstract: 205,873. Griffin, P. W. July 25, 1922. Ball-and-ring mills; roller- and-ring mills; impact pulverizers.-In a machine for pulverizing or grinding coal &c. in which a wheel with balls or rollers in pockets or recesses in its periphery revolves on an horizontal shaft within a stationary grinding- ring, the centre of the wheel is formed to operate fan-like to create suction upon one or more openings for the material into the grinding- chamber and to throw the material centrifugally from the centre of the wheel into the grinding-ring in front of the balls or rollers. As shown, two rotors c, d mounted on an horizontal shaft e operate within chambers c<2>, d<2> of a casing a. The break-down chamber c<2> is fitted with renewable serrated linings c<3>, and at the upper part with a circumferential series of bars c<4> to form an impact surface. The rotor c consists of a number of radial arms c<5> projecting from a hub c<6> and reversely bent at right-angles at their outer ends c'. Or the arms c<5> may be provided at the ends with blades or paddles. The material is fed into the chamber c<2> from a hopper i by a screw conveyer driven by a wheel i<3>, and when crushed small enough is sucked through the grid h<2> into the hollow centre of the wheel d in the finishing chamber d<2> containing the grooved grinding-ring j which is made in halves. The grinding-wheel d has a series of pockets or recesses d<3> on its periphery to hold the grinding-balls k, the driving end of each pocket being fitted with a renewable stud m against which the ball abuts. The bottom of each pocket is radially slotted at d' to communicate with the hollow interior of the wheel, the rear side d<5> of which is closed. The hollow centre of the wheel is formed by spaces d<6> and intervening blades acting as spoke-like arms d'. A fan x driven by a belt o from the shaft e draws the ground material out of the chamber d<2>, the heavier particles being deposited in a separating-box y, fitted with an adjustable hinged shutter u and a baffle w, and passing through an opening v into the chamber d<2> for re-grinding. Air is admitted at the lower part of the chamber d<2> through an adjustable opening t controlled by a hit-and-miss shutter t<2>. The grinding-ring may be flat instead of grooved and rollers used in place of balls.
Patent GB-1002911-A (GB)
Title: Improvements in or relating to centrifugal density separators
IPC: B01D33/073
Filed: 1962-05-28
Abstract: 1,002,911. Hydraulic turbines. SOC. FIVES LILLE-CAIL. May 28, 1962 [May 29, 1961], No. 20412/62. Heading FIT. [Also in Divisions B1 and B2] Impeller blades 6 project from the upper cheek of a filter drum 8 for liquids mounted on a rotary shaft 3, and inward flow turbine blades (not shown) may be fitted in the drum. Liquid introduced at 4 is centrifuged by the impeller 6 into the casing 10, and passes inwardly into the drum and out through the hollow shaft 11. A further inlet and impeller may be located at the bottom of the drum.
Patent GB-877223-A (GB)
Title: Improvements in or relating to push-button mechanisms
IPC: G05G7/08
Filed: 1959-06-16
Abstract: 877,223. Switches held set and freed mechanically. RITTER, J., and DOETTLINGER, A. June 16, 1959 [June 26, 1958], No. 20534/59. Class 38 (5). [Also in Group XV] A push-button mechanism for use in a switch comprises a push-button 1 slidably-guided in a sleeve 2, relative movement between the members being restricted by a captive ball 4 retained in closed-ended or endless control grooves 5, 6 in the members, one of the members having a ball-insertion groove 7 open at one end and at the other end 8 communicating with one of the control grooves, the groove 7 being constricted where it opens into the control groove. The inner end of the push-button is used to close a pair of contacts against the bias of a spring 15a. The co-operating ball 4 and grooves 5, 6 serve to latch the push-button at successive depressions thereof in positions wherein the contacts are alternately open and closed. The push-button and sleeve 2 are injection moulded from synthetic material. The ball-insertion groove 7 on the push-button is used in the assembling of the parts, the ball being placed in the groove 5 and the pushbutton being then pressed inwards until the ball snaps past the constriction at the end 8 of the groove 7 into the groove 6. The groove 6 may be formed in the sleeve 2 and the groove 5 in the press-button and the ball insertion groove may be in the sleeve.
Patent GB-144515-A (GB)
Title: Improvements in pencil-holders
IPC: B43K21/00
Filed: 1919-08-21
Abstract: 144,515. Valeggia, A. Aug. 21, 1919. Pencil-holders.-A magazine pencil-holder has an inner lead-holding tube formed of semi-circular crosssection at its rear end 13, in order to receive a fresh lead from one of a number of inwardly-opening magazine. recesses made round the bore 15 of the barrel 11. The, inner tube is cylindrical at its forward end 12 and is a sliding fit in the bore 14 of the barrel. The rear end 17 of the inner tube is attached by a stud 18 to a cap 19 on the barrel 11, and a spring 21 in compression between the cap and the barrel tends to withdraw the inner tube into the barrel. The inner tube is split at 22, and the split portion is encircled by a ring 23, which, co-operating with a conical enlargement 24 of the bore, affects the gripping of the lead. The cap and inner tube are rotatable step by step on the barrel in order to refill the inner tube. This is accomplished by means of depressions 31 in the cap, preferably equal in number to the magazine recesses, co-operating with grooves 32, 33, Fig. 2, in the barrel 11. The recesses open out at the rear end of the pencil through the cap 19, to allow of charging the magazine, and are closed by a rotatable cover 26, normally covering the apertures 25 and held in position by a slight depression 28.
Patent GB-460150-A (GB)
Title: Improvements in or relating to printing telegraph systems and apparatus
IPC: H04L13/14
Filed: 1935-07-19
Abstract: 460,150. Code telegraphy. CREED & CO., Ltd., THOMPSON, A. E., and SALMON, R. D. July 19,1935, No. 20624. [Class 40 (iii)] In an optical relay for signals of the five-unit or like code, the incidence of light on photocells is timed in correspondence with the signal periods. At the receiving station shown in Fig. 1, signals received by the line magnet g open a shutter f to allow light to fall on a photocell c, but only at the middle of each signal period, when the shutter e is opened by a cam q. The photocell c ignites a gas-filled discharge tube d, which is extinguished by the opening of the cam-controlled contacts h before the end of each signal period ; and this tube passes on the signals to five printer magnets R1 ... R5 through the distributer J. The start signal energizes a magnet l to release a shaft m for one revolution. In a modification, Fig. 2 (not shown), Kerr cells and Nicol prisms are used instead of the shutters e, f. In the repeater shown in Figs. 3, 5, signals received by the polarized magnet g are applied through one or other of two photocells P1, P2 to a corresponding gas-filled discharge tube T1 or T2 and so through the relay M3 to line L2. The discharge tubes extinguish themselves by energizing the magnets M1, M2, whose armatures m1 m2 short-circuit their anode circuits. The photocells P1, P2 are only illuminated at the middle of each signal period, light from a source a being reflected on to them by mirrors Ql, Q2 after passing through a rotating slotted disc D. The disc has a short starting-slot so placed that in the rest position the cell P2 only is illuminated. When the start signal arrives, tube T2 is ignited and the magnet M trips a rotating shaft, Fig. 4 (not shown), on which the disc D is mounted.
Patent GB-1225051-A (GB)
Title: Hot water supply system
Inventor: ROACH RONALD JOHN
IPC: F24D17/00
Filed: 1968-05-01
Abstract: 1,225,051. Jet pumps. GRAMALL INDUSTRIES (PTY) Ltd. May 1, 1968, No.20634/68. Heading F1E. [Also in Divisions F2 and F4] A jet pump, which is adapted to be installed in a cistern 10 in which the liquid level is controlled by a float operated valve whose outlet has connected thereto a downwardly depending pipe 18, comprises a body 20 which is connected to the cistern base and to the cistern outlet 39, an extension 35 of the pipe 18 which tapers towards the outlet 39, an inefficient injector 36 and a by-pass line 38, both the injector and the line being in communication with the lowermost portion of the tank interior. With the above arrangement, upon a demand being created at the outlet 39, flow to the outlet initially takes place through line 38 and thereafter, subsequent to the float valve opening, is supplemented by flow both from the valve outlet pipe 18 and by flow through injector 36 which is induced by fluid-flow through the extension 35.
Patent GB-959442-A (GB)
Title: Improvements in or relating to metalliferous compositions
Inventor: ALEXANDER GUY B
IPC: C22C1/10
Filed: 1960-06-13
Abstract: Metals or alloys having a melting point greater than 50  DEG C. and improved mechanical properties are produced by dispersing in the molten metal or alloy sub-micron sized particles of at least one refractory metal oxide insoluble therein, the particles having a surface area in sq.m./gm. of 12/D-1200/D when the melting point of the composition is 50-70  DEG C. and 6/D-1200/D when the melting point is greater than 720  DEG C., there being also present an active metal which prevents the separation out of the particles, this metal exceeding 4 mol. per cent based on the refractory particles when the melting point of the composition exceeds 720  DEG C., and casting the metal.  The active metal is one the oxide of which is not reduced by hydrogen below 1000  DEG C. and has a free energy of formation at 27 DEG C. of at least 88 k.cal. per gm, atom of oxygen.  Suitable metals listed are Be, Mg, Al, Si, V, Ti, Ta, Y, Zr, Hf, Nb, rare earth metals, Li, Na, Ca, Ba, Sr.  The basis metals are those the oxides of which are reduced by hydrogen below 1000  DEG C. and have a free energy of formation at 27  DEG C. of less than 88 k.cal. Exemplified are Fe, Co, Ni, Mo, W. Cr. Cu, Ag, Au, Cd, Pb, Sn, Bi and In.  The refractory oxides used are those having melting points in excess of 1000  DEG C. and having a particles size of 5-500 millimicrons and a free energy of formation at 1000  DEG C. greater than 60 k.cal. when the melting point of the composition is between 50  DEG C. and 720 DEG C. and greater than 90 k.cal. when the said melting point exceeds 720  DEG C.  Particular oxides listed are those of Y, Ca, La, Be, Th, Mg, U, Hf, Ce, Al, Zr, Ba, Ti, Si, Ta, V, Nb, Cr, but mixed oxides or compounds such as aluminates, silicates, titanates, vanadites, chromites, or zirconites may be used.  Volume loadings of up to 50% of oxide may be employed in compositions having a melting point between 50 and 720  DEG C., and up to 30% when the melting point exceeds 720  DEG C.  The compositions may be prepared by direct addition of oxide particles to the molten metallic phase, or incorporation may be facilitated by first vapour depositing the active metal on to the oxide.  The presence of oxygen during addition is also advantageous. Alternatively a dispersion of oxide in basis metal may be prepared by partial reduction of mixed oxides and subsequently added to molten metal. There may be also prepared a dispersion of refractory oxide in active metal which is then added to the basis metal.  Specification 667,154 is referred to.
Patent GB-571778-A (GB)
Title: Improvements relating to condenser microphones
IPC: H04R1/04
Filed: 1943-12-10
Abstract: 571,778. Condenser microphones. KOLB, O. K. Dec. 10, 1943, No. 20687. [Class 40 (iv)] A condenser microphone is made with a flat diaphragm 2 which is given a dome shape away from the back plate 1 when fitted in position and prior to the application of the polarizing voltage. The diaphragm is made of a dielectric (e.g. mica 0.75 inch in diameter and 10 to 15 microns thick) coated with a conductive layer 3 on the side furthest from the back plate. The dome shape of the diaphragm may be produced by the tightening of its edge against the casing 8 and the back plate 1 by means of a clamping ring 7 and screws 6, the edge 9 of the back plate 1 protruding slightly beyond the seating face of the casing 8.
Patent GB-335983-A (GB)
Title: Improvements in or relating to bundling presses
IPC: B65B27/00
Filed: 1929-07-05
Abstract: 335,983. Smith, H. S., and Branston Artificial Silk Co., Ltd. July 5, 1929. Parcelling by bundling.-A press for bundling hanks of yarn comprises series of vertical rear and front supports 10, 11, a platen 12 and closing flaps 13. A reel holder is mounted on members 15 to carry reels 21, 22 of cord so spaced on the spindles 19, 20 that each reel is approximately centered on one of the spaces between the side supports 10. The spacing of the reels is effected by means of wooden sleeves. A guide 26 for each cord is mounted on a transverse bar 28, and a rod 30 assists to keep the cords in position. In use, the cords 27 are disposed as shown, and a bundle 32 of hanks is laid in the press and held down by closing and bolting the flaps 13. The loose ends of the cords are brought up over the front of the press and knotted below the guides 26, a length being drawn forward for the next operation.
Patent GB-695469-A (GB)
Title: Locking device for hydraulic shears
IPC: B23D33/00
Filed: 1950-08-22
Abstract: 695,469. Shearing. RHODES, C. J. Aug. 2, 1951 [Aug. 22, 1950], No. 20797/50. Addition to 556,836. Class 83 (iv). The rod 4 operating the beam 1 of the plateshearing machine described in the parent Specification is locked against accidental movement when the beam is in its raised position. A toggle operated plunger 9 engages the end of a key 8a, located in a key-way in the rod, under the pressure of an actuaing spring 19. When hydraulic pressure is applied to clamps 17 for the plate, it is also applied through a pipe 15 to a piston 13 compressing the spring 19 and raising the plunger 9 to free the rod 4 to permit actuation of the beam by the piston 7.
Patent GB-1171989-A (GB)
Title: Dental Hand Appliance
IPC: A61C1/10
Filed: 1967-03-29
Abstract: 1,171,989. Dental syringes. SIEMENS A.G. 29 March, 1967 [14 April, 1966], No. 20843/69. Divided out of 1,171,988. Heading A5R. The subject-matter of this specification is identical with that described in the Specification 1,171,988 but the claims are concerned with a dental hand appliance for dispensing fluid, the appliance comprising a shank having a foot end with a connection for the fluid supply and a head end with a nozzle for discharging the fluid, the shank tapering in wedgeshaped manner from the head end to the foot end and being polygonal in cross-section.