baber/WOPTO huggingface dataset:
Patent GB-373364-A (GB)
Title: Improvements in domestic fire-grates
IPC: F24B1/193
Filed: 1931-04-23
Abstract: 373,364. Firegrates. MASTERMAN, A. W., 28, Rolleston Drive, Lenton, Notting- ham. April 23, 1931, No. 12020. [Class 126.] In an improved form of the firegrate described in Specification 140,617, [Class 126, Stoves &c.], in which the fuel support is formed by two refractory side members E with air passages in their undersides, a forward extension B on the grate back, and a central metal grate C, the rear edge of the latter extends farther back than the side members and is supported in a recess F in the extension B. The front of the extension B may be cut away at B<1> to allow a clear air passage right up to the rear ends of the spaces between the bars of the grate C.
Patent GB-1440684-A (GB)
Title: Thermally responsive pneumatic pressure regulating valve
IPC: F16D25/12
Filed: 1973-10-05
Abstract: 1440684 Valves BORG WARNER CORP 5 Oct 1973 [2 Nov 1972] 12227/75 Divided out of 1440683 Headings F2V and F2L A thermally responsive pneumatic pressure regulating valve for providing a pressure inversely proportional to a temperature signal comprises a temperature sensor 139 which has a movable portion 141 which abuts a plunger 169, biased against portion 141 by a spring 174 and having a central bore 179 to which pneumatic pressure, supplied to the valve from a port 132, enters through apertures 177. The end of bore 179 remote from sensor 139 abuts a valve seat 181 of a spring-biased piston 184 in one part of a chamber 156 divided in two by a further piston 154, biased to the right as shown by a spring 162 and having a valve seat 166 in abutment with the piston 184. To one side of piston 154 is an outlet port 133, a vent port 143 venting the chamber on the opposite side of piston 154. On increase of temperature the sensor portion 14 moves to the right, which moves plunger 169 to the right which moves piston 184 to open valve seat 166 and so vent fluid from the right-hand side of piston 154 through aperture 167 and vent port 168, the spring 162 moving the piston 154 to the right due to the pressure drop and so reclosing valve seat 166. On drop of temperature the plunger 169 moves to the left, thus opening valve seat 181 and allowing fluid to pass from inlet 132 to the right-hand side of piston 154, which moves piston 154 to reclose valve seat 181. The pressure at outlet port 133 thus varies inversely with temperature. The temperature sensor 139 is described as in an engine cooling system and the pressure at port 133 is communicated to a chamber of a clutch, in which fluid pressure disengages the clutch, so that slip of the clutch, whose output comprises an engine cooling fan, is varied to vary fan speed according to cooling needs (Figs. 1, 2 and 4, not shown).
Patent GB-842291-A (GB)
Title: Improvements in or relating to gas burning appliances
Inventor: DUCE RICHARD GEORGE
IPC: F23D14/32
Filed: 1958-04-18
Abstract: 842,291. Gas burners. SHELL RESEARCH Ltd. April 18, 1958, No. 12381/58. Class 75(1). A gas burner comprises a head 1 having a nozzle 3 supplied with combustible gas through a conduit 10, means surrounding the nozzle 3 for causing air to rotate about the axis of the nozzle and a single control means for controlling simultaneously the supply of combustible gas and the rate of rotation of the air. The air is supplied by a conduit 11 to an annular chamber 5 interrupted by a ring 7 having inclined slots 8 which effect rotation of the air. The rate of rotation of the air is determined by its pressure which is regulated by two needle valves 9, 14. The combustible gas is regulated by a valve 19 operated by a diaphragm 17 the upper side of which is submitted to the air pressure between the two needle valves 9, 14. A set screw 23 abuts the diaphragm to prevent complete closure of the gas valve 19 when the air pressure is reduced. A conduit 21 supplies oxygen through the needle valve 22 to the gas conduit 10.
Patent GB-548610-A (GB)
Title: Improvements in cranking time limiter for engine starters
IPC: H01H43/30
Filed: 1941-09-24
Abstract: 548,610. Starting prime movers ; thermal switches. BENDIX AVIATION CORPORATION. Sept. 24, 1941, No. 12386. Convention date, Nov. 14, 1940. [Class 38 (iv)] [Also in Group XXXVII] The duration of operation of the starter motor of an internal combustion engine is limited by a thermal switch in the control circuit for the starter switch and the heating current for the thermal switch is controlled by a thermal interrupter whereby the time element is rendered independent of the battery voltage or starter load: The starter control circuit comprises manual switch 9, thermal switch 14, magnet coil 22 of the starter switch 5 and the vibratory switch 26. The switch 14 comprises a bifurcated spring blade 18, carrying a contact 17 co-operating with a fixed contact 12, and a bimetallic-element 28 secured at 29 to a reversed complementary bimetallic servomotor 31 compensating for ambient temperature and fixed to the switch base on a bracket 33, which is adjustable by a screw 25. A compression spring 36, fixed between the end of the member 28 and the bifurcated blade, holds the contacts 12, 17 in engagement and snaps them apart when a coil 48 has sufficiently heated the element 28. The heating circuit is energized on closure of the starter switch 5 and includes a thermal interrupter comprising contacts 38, 39 shunted by a resistance 51 and operated by a wire 43 tensioned by a spring 46 and carrying the heating current. The coil 48 accordingly is heated by a current the average value of which is maintained substantially constant by variation and the period of intermittent closure of the contacts 38, 39 with variation in battery voltage.
Patent GB-768566-A (GB)
Title: Improvements relating to apparatus for solving physical problems
IPC: G06G7/46
Filed: 1954-04-29
Abstract: 768,566. Resistance networks. REDSHAW, S. C. April 29, 1955 [April 29, 1954], No. 12393/54. Class 37. A resistance network for use in apparatus for solving physical problems comprises resistance elements 21a to 21d disposed between adjacent rows of electrical terminals 14 positioned at the nodes of the network. Each resistance element may consist of woven ribbons of which the warp threads 22 are of insulating material and the weft is made up of resistance wire 23 which is looped as at 24 for connection to an adjacent terminal 14; alternatively, the element may consist of a length of wire arranged in zig-zag form and embedded in a ribbon or strip of insulating material. The resistance elements are embedded in insulating material on a framed base board. Additional resistance elements 22a to 22d form the periphery of the network.
Patent GB-1084075-A (GB)
Title: Improvements in or relating to the preparation of anhydrous lithium peroxide
Inventor: BACH RICARDO OTTO
IPC: C01B15/043
Filed: 1965-03-24
Abstract: Anhydrous lithium peroxide is formed in a reaction mixture comprising an aqueous solution of hydrogen peroxide and solid lithium hydroxide, the concentration of the hydrogen peroxide and the lithium hydroxide in the mixture being such as to give a weight ratio of water present in the mixture to lithium peroxide formed by the reaction of the hydrogen peroxide with the lithium hydroxide of from 2:1 to 5:1; the hydrogen peroxide and lithium hydroxide being allowed to react at the ambient temperature of the mixture.  The lithium peroxide formed is dried.  The hydrogen peroxide and lithium hydroxide are permitted to react until a change in colour is observed in the reaction mixture and/or until the temperature of the reaction mixture recedes to a temperature of 30 DEG  to 40 DEG  C.  An organic liquid e.g. lower alkyl alcohols, pyridene or ketones which are water soluble but in which lithium peroxide is insoluble are added to the reaction mixture after the hydrogen peroxide and lithium hydroxide have been permitted to react.
Patent GB-619681-A (GB)
Title: Machine for granulating material, usually powder, in a damp or viscous state
IPC: B01J2/20
Filed: 1946-04-24
Abstract: 619,681. Granulating powdered material. JACKSON & CROCKATT, Ltd., J. G., and GAIR, D. April 24, 1946, No. 12433. Addition to 523,224. [Class 87 (ii)] A granulating machine of the kind described in the parent Specification in which material in a hopper F is forced through a sieve C by means of an oscillating beater B which has substantially .upright operating faces, has means for driving the beater comprising a driven shaft 4, Fig. 3, which, through a worm 5, drives an eccentric 5a operating a sheave 6 which is pivoted to a toothed quadrant 7. Oscillation of the quadrant causes rotation of a pinion 8 mounted on a shaft 10, in which the beater shaft is removably secured by a screwthreaded bolt 11. The shaft, eccentric sheave, quadrant and pinion are mounted in a casing D which is filled or partly filled with oil. The wire mesh of the sieve is held at one end by a clamp 12, and at the opposite end by a clamp 14. Tension may be applied to the wire by screws 15 which force the clamp 14 outwardly. A mesh-carrying frame 17 is temporarily supported in position by a lug 18 and is permanently supported by four pivoted screw clamps 19.
Patent GB-1460837-A (GB)
Title: Blade for a surgical bone saw
IPC: B23D61/18
Filed: 1974-05-21
Abstract: 1460837 Saw blades SELFLEX CO Ltd 19 Aug 1975 [21 May 1974] 12541/74 Heading B5L [Also in Division D1] A saw blade comprises a first wire serving as a support and a second wire of less thickness wound helically with spaced turns on said first wire, the second wire being of substantially rectangular cross-section. In the preferred form of the invention there are two first wires 1 each with its own second wire wound thereon the first wires 1 being helically intertwined with each other. The saw blade is particularly intended for use as a surgical bone saw.
Patent GB-748449-A (GB)
Title: Electrical controlling system
Inventor: HOLMES BURTON F
IPC: H02P5/68
Filed: 1953-05-18
Abstract: 748,449. Switching systems. SCHULTZ DIE CASTING CO. May 18, 1953, No. 12567/54. Divided out of 748,433 under which a Specification was laid open to inspection under Sect. 91 of the Acts, June 11, 1949. Class 38 (4). An electrical control system for use in, e.g., a die casting machine comprises a motor 19 connected to be supplied from power input leads 20 ... 22 through the contacts 24, 17, 31 of a contactor 23 and three solenoid coils 9 ... 11 connected to be supplied in parallel with each other from the motor side of the contactor contacts, the first coil 9 being fed over the contacts 26 of a first relay and the second and third coils 10, 11 being fed over the contacts 26, 29, when closed, of the first relay and contacts 33, 36 and 39, 42 of respective second and third relays, all the relays having coils 6 ... 8 whose energization from current sources are controlled separately and independently from the coils 9 ... 11; the system provides that while all the coils are controlled by their respective relays and by the contactor, coil 10 and 11 can be energized only when coil 9 is energized.
Patent GB-127156-A (GB)
Title: Improvements in or relating to Hob Grinding Attachments for Cutter Grinding Machines.
IPC: B24B3/12
Filed: 1918-08-02
Abstract: 127,156. Perkin & Co., and Perkin, L. C. Aug. 2, 1918. Cutting - edges, shaping and treating; work-holders. - An attachment for machines for grinding hobs, gear-cutters, &c. comprises a mandrel l having an end collar m and a part of reduced diameter, on which the cutter p to be ground is secured by means of a sleeve o and a nut n. Adjacent to the collar is loosely mounted a divided plate q having teeth r on its periphery, and adjacent to the divided plate is a collar s secured to the mandrel and having a gap formed in it with radial faces t, u. A screw v adapted to work in a projection w on the divided plate presses against the face t, and a spring plunger x, mounted in the face u, presses against the projection w. In operation, the mandrel is mounted between centres on the machine slide, and the cutter. is located relative to the grinding-wheel e by means of a pawl, which engages one of the teeth of the divided plate; adjustment of the screw v rotates the mandrel and the cutter so that additional cuts may be taken from the faces p<1>. Loose sleeves may be provided, adapted to fit on the mandrel, to accommodate cutters of different bores.
Patent GB-167300-A (GB)
Title: Improvements in and relating to the method of and means for securing metal, window frames to corrugated sheets
IPC: E04D13/03
Filed: 1920-05-07
Abstract: 167,300. Dennett, T. R., and McCabe, G. May 7, 1920. Windows.-The frame of a hinged or fixed light is secured to a surrounding corrugated sheet by beating down the edges of the frame on a block composed of members such as a, Fig. 2, having grooves c for the flanges. For fixed lights the block is constructed as shown in Fig. 1, grooves or notches e being provided for the flange of the central division bar and holes g for punching through rivets. For the frame of a hinged light the groove c is provided on all sides of the block.
Patent GB-284905-A (GB)
Title: Fountain pen
IPC: B43K5/04
Filed: 1927-05-12
Abstract: 284,905. Faber, P. May 12, 1927. Reservoir pens; air and ink supply arrangements; nib-sections.-In a fountain pen of the type provided with a nib-section rotatable in the barrel for the purpose of regulating the ink-supply, and with a, separate container serving as the ink reservoir, the container is bottleshaped and is open at the neck, being detachably secured in place by means of a sleeve surrounding the neck. As shown in Fig. 1, the nib-section b is rotatably mounted in a sleeve h screwing into the barrel a and holding, by means of a ring k, the end of a flexible tube f mounted on the neck of a transparent ink container d. The other end of the tube f is secured to an extension of the nib-section b, so that, on rotation of the latter, the tube, f is twisted to stop the flow of ink. The section b is formed with a tapering. bore in which fits a conical split sleeve m carrying the nib and feed-bar. In a modification, the container d is held in place by a sleeve k<1>, Fig. 3, having a conical opening adapted to be closed by a valve F which is lifted or lowered by the co-operation of a pin 2 thereon with a straight and a helical slot in the sleeve b and relatively-rotatable nibholding tube y respectively. A groove i in the cylindrical part of the valve permits the flow of ink from the reservoir to the nib when the valve is open.
Patent GB-309751-A (GB)
Title: Improvements relating to boxes and internal trays therefor
IPC: B65D85/32
Filed: 1928-05-02
Abstract: 309,751. Brown, A. A. May 2, 1928. Fittings, internal.-A box for eggs or other fragile articles is provided with a tray A having apertures formed by scoring and cutting to provide flaps D, E, E, E, which are turned down to support resiliently each article disposed in an aperture; at least one of the flaps of each aperture extends to the bottom of the box to support the tray and to form a dividing and protecting wall between adjacent articles. The sides B of the tray engage the bottom of the box and the side C are folded upwards.
Patent GB-990163-A (GB)
Title: Method and apparatus for growing semiconductor crystals
IPC: C30B15/00
Filed: 1961-04-10
Abstract: 990,163. Crystal-pulling. TEXAS INSTRUMENTS Inc. April 10, 1961 [April 13, 1960], No. 12904/61. Heading BIS. A semi-conductor compound of a volatile element is pulled from a melt in the presence of the volatile element using a direct drive, pulling being effected in a chamber connected to a gas trap into which vapour from the  chamber is allowed to leak. The compound may be InSb, InP, GaAs, A1P, PbTe, InSe, In 2 Te 3 , AgSbTe 2 , Bi 2 Te 3 , CuFeTe 2 , CuGaSe 2 , or CuFeSe 2 . The chamber may contain an inert gas, e.g. argon, which may escape with the vapour. As shown, a rod 6 is pulled from a melt 7 in a quartz chamber 2 using a quartz pull rod 4 which passes through a porous graphite bearing 11, a vapour trap bounded by a quartz tube 13 and cooled by a water jacket 17, and a teflon seal 16. Vapour may also escape between a cap 3 of boron nitride and the top of chamber 2 into a chamber 15 fed with inert gas.
Patent GB-237391-A (GB)
Title: Improvements in seed drills
IPC: A01C7/18
Filed: 1924-05-26
Abstract: 237,391. Miller, G. J. May 26, 1924. Seed drills.-Apparatus for sowing seeds in compact groups comprises a receptacle for accumulating a charge of seeds delivered from a hopper and means for delivering the charge, to a farrow in approximately column form and from a point close to the ground. The receptacle a is tapered and fastened to plates d bolted to a coulter shoe A. The seeds are discharged from it by a rotary valve consisting of a disc having radial teeth g with segmental pockets between them, the seeds being confined in-the pockets as the valve rotates by curved walls i. The valve is driven by means of a toothed wheel h.
Patent GB-1174994-A (GB)
Title: Apparatus for Driving a Roadway and/or a Machinery Stall advanced in relation to a mineral face
IPC: E21C27/02
Filed: 1967-03-20
Abstract: 1,174,994. Mining installations. GEWERKSCHAFT EISENHUTTE WESTFALIA. 20 March, 1967 [22 April, 1966], No. 12958/67. Heading E1F. Apparatus for the driving of roadways and/or stable holes in advance of longwall mine faces comprises cutter wheels 17, 19 secured to either end of a horizontal shaft 18 rotatably mounted in the end of and at right angles to a vertically swingable boom 17 of a turret 14 mounted for rotation about a vertical axis 21 on a skid frame slidable along a conveyer 11. With this apparatus a high cutting rate is obtained as both disc can cut into the face if the boom is swung about the axis 21 to lie when advancing along a face at an obtuse angle to the face.
Patent GB-789748-A (GB)
Title: Improvements in electron target structures
Inventor: RAINE THOMAS
IPC: H01J35/08
Filed: 1955-05-04
Abstract: 789,748. Brazing. METROPOLITANVICKERS ELECTRICAL CO., Ltd. April 27, 1956 [May 4, 1955], No. 12978/55. Class 83 (4). [Also in Group XL (a)] A tungsten button 13 is sealed to the nickel wall portion 8 of an X-ray tube anode by nickel plating the button and then copper - brazing it to the nickel wall. The button is plated to about 0.0002 in. thickness, and then heated in hydrogen at 1070‹ C. for 30 minutes, when diffusion occurs. The button is then brazed to the nickel wall by inserting a copper shim 0.005 in. thick between them, and heating in hydrogen to 1100‹ C.
Patent GB-1515658-A (GB)
Title: Heat-exchange units
IPC: H01L23/40
Filed: 1977-03-28
Abstract: 1515658 Cooling electrical components SIEMENS AG 28 March 1977 [23 April 1976] 12999/77 Heading F4U [Also in Division H1] A heat exchange unit 1 for use in cooling a disc-type thyristor comprises a metal body formed with passages 2 having respective inlets and outlets in recesses 3 in the body. The passages are interconnected to provide a flow path for a heat exchange fluid between an inlet 4a and an outlet 4b, the interconnections being effected by metal plates 5 sealed in the recesses. The passages 2 are formed by a boring machine or by electrochemical erosion, and the recesses 3 are formed by milling or electrochemical erosion. The plates 5 are secured by adhesive, by soldering or by electron beam welding. In use, a thyristor to be cooled is pressed against a face lc of the metal body.
Patent GB-1185388-A (GB)
Title: Photoresist Compositions.
Inventor: MARTINSON LAWRENCE ELSWORTH
IPC: G03F7/038
Filed: 1967-06-29
Abstract: 1,185,388. Photo-sensitive materials. EASTMAN KODAK CO. June 29, 1967 [July 1, 1966], No.30127/67. Heading G2C. A photo-resist coating composition comprises an organic solvent-soluble light-sensitive and/or light-sensitized polymeric material and an organic acid capable of chelating copper ions, the acid being present at a concn. which inhibits the darkening of the composition on contact with a copper surface. The acid may be a dicarboxylic, α-amino carboxylic, or α-hydroxycarboxylic acid, a number of which are listed. The polymeric material may be natural, modified or synthetic rubber, shellac,  polyvinyl alcohol, polyethylene, nylon, or polystyrene/butadiene, which may be sensitized with arylazides as in Specification 769, 985, or a sensitive polymer comprising a substituted or unsubstituted cinnamic ester of polyvinyl alcohol or cellulose, which may also contain other acyl groups. The acid may be present as 0.1 - 5% of the composition, which may also contain a novalak resin and an optical sensitizer. The composition may be coated on Cu support by dipping or whirlcoating. Examples 1-4 refer to the use of polyvinyl cinnamate sensitized with crystal violet carbinol base or hydroquinone, and Examples 5-6 to the use of chlorinated rubber sensitized with 4, 4<SP>1</SP> - diazidochalcone.
Patent GB-416401-A (GB)
Title: Improvements relating to vanity cases
IPC: A45D40/22
Filed: 1934-05-01
Abstract: 416,401. Vanity cases. KURLASH CO., Inc., TUTTLE, W. R., and STICKEL, C. W., 77, South Avenue, Rochester, New York, U.S.A. May 1, 1934, No. 13079. [Class 18.] A vanity case is provided with a false bottom 4, a housing 20 for the head 21 of a brush, and a yieldable guide 22 which urges the handle 10 of the brush into a raised position to facilitate withdrawal thereof. The guide 22 is provided with ears 23 and is secured to the plate 4 by means of an extension 26 which passes through the underside of the plate, and the housing 20 is secured to the plate by tongues 27. The plate 4 is formed with apertures in which are seated a container 7 for a sponge and a pan 5 for a cake of cosmetic. A top plate to the container 7 is formed with a diagonal slot to afford access to the sponge, and the container can be ejected from its aperture in the plate 4 by pressing on a lever 12 which is pivoted in a slot in the plate and whose lower end is seated under the container. The hinged lid 1 of the case has a mirror 3 on its underside and as soon as the lid is lifted, the handle of the brush springs up.