baber/WOPTO huggingface dataset:
Patent GB-597541-A (GB)
Title: Improvements in or relating to gas torches
IPC: F23D14/46
Filed: 1945-08-22
Abstract: 597,541. Blow-pipe burners. BRITISH OXYGEN CO., Ltd., and GODFREY, R. C. Aug. 22, 1945, No. 21470. [Class 75 (i)] [Also in Group XXIX] In a gas torch for metal severing or welding operations, a valve for inhibiting or permitting gas flow is movable manually into and out of sealing engagement with its seating and, when in the flow-permitting position is at least for the greater part out of the gas flow path. In the torch shown, the cutting oxygen stream through the valve chest 22 having axially aligned supply and delivery tubes 20, 21 is controlled by turning a valve element 28 by a member 35 from a position in which it engages a seating 27 to a position wholly out of the path of the oxygen stream, The valve element 28 may be of rubber or a yielding synthetic resin such as polythene and is bolted to a bridge-piece 31 formed integrally with annular elements 29, 30 rotatable in the chest bore 26. The valve-operating spindle 33 is made gastight by packing 41 and a washer 42 and the valve is held against a shoulder 39 in the bore 26 by a spring 38 arranged between a screw 37 and a sealing disc 40.
Patent GB-365577-A (GB)
Title: Improvements in record discs and in the manufacture thereof
IPC: G11B3/70
Filed: 1930-07-16
Abstract: 365,577. Gramophone records. WELLIT-GES. PLESS & CO., 14, Straussengasse, Vienna. July 16, 1930, No. 21515. Convention date, Jan. 29. Void [Published under Sect. 91 of the Acts]. [Class 40 (ii).] Laminated sound records, of the kind described in Specification 350,985, having a core of paper, &c. and outer layers of an elastic material such as cellulose esters are so constructed that the core is completely enclosed, both at its outer edge and around the central hole, by the material forming the outer layers, and is thus protected from atmospheric influences. The core b may be made with perforations, slots, indentations, or grooves, so as to enable the laminations to unite firmly. Pasteboard, wood pulp, or other cellulose products, tissues, metal plates or metal foil may be used instead of paper for the core, and it is stated that " Zellon " is suitable for the outer layers. Preferably the diameter of the core (which may consist of one or more sheets, with or without binding agents) is less than that of the outer layers, so that the inner and outer edges of the latter join together at e, f when the compound disc is pressed under heat. If, however, all the layers have the same diameter, a protective coating of varnish or the like is applied to the edges after assembly of the layers.
Patent GB-472717-A (GB)
Title: Improvements in or relating to secondary emission electron multipliers
IPC: H01J43/30
Filed: 1936-08-05
Abstract: 472,717. Electron multipliers. GENERAL ELECTRIC CO., Ltd., and FRY, D. W. Aug. 5, 1936, No. 21575. [Classes 39 (i) and 40 (v)] A multiplier comprises a plurality of grids, each lying in the path of the electron stream from one cathode to the next and all connected to the same alternating modulating voltage which carries each of them through the same cycle of potential about its mean potential. Preferably, one such grid is associated with the cathode in every stage ; the cumulative effect of each grid on its saturated electron stream results in a large total effect. In the form shown, each cathode 1 has above it an accelerating electrode 4 connected to the next cathode, which, in association with a magnetic field, guides the electrons between the cathodes. A grid 6 is placed before each cathode and biassed slightly negatively by connection to a point on the potential divider 3 through a leak resistance 7. A modulating source 8 is connected to each grid through a capacity 9. The first cathode is photo-electric. In another form, the electrons pass in a zigzag fashion between the cathodes, on which they are focused electrostatically by cvlindrical extensions of the cathodes. A modulating grid is placed in each of the gaps left between the extensions. Additional magnetic focusing may be employed. The Provisional Specification describes an arrangement in which a bias resistance is connected in each cathode lead.
Patent GB-900722-A (GB)
Title: Improvements in and relating to storage structures
IPC: E04H7/26
Filed: 1960-06-20
Abstract: 900,722. Granaries. WALLER, J. H. DE W. Oct. 25, 1960 [June 20, 1960], No. 21580/60. Class 20 (1). A granary comprises a domed, Fig. 3, or an arched and domed structure, Fig. 1 (not shown), formed of reinforced concrete corrugated in vertical planes to accommodate expansion and contraction of the structure; and having a sealing covering applied thereto constituting a barrier to air or vapour. The vertical crosssections of the dome or arch, and also the corrugation cross-sections, are catenaries or circular arcs; the floor of the granary is flat, Fig. 2 (not shown), or conical; if conical, it may be wholly or partly above ground level, Figs. 4 and 5 (not shown). The sealing material may be applied to either or both sides of the concrete structure, and comprises bitumen, or aluminium paint or foil, the latter being secured by a synthetic plastic adhesive. The structure may be heat-insulated by providing double walls. Grain enters the structure through a trap 10, and is withdrawn by suction through a trap 16. Specification 545,334 is referred to.
Patent GB-1391151-A (GB)
Title: Extraction of nickel from sulphide minerals
IPC: C22B15/00
Filed: 1973-05-07
Abstract: 1391151 Nickel values from sulphide ores by oxidation INTERNATIONAL NICKEL CO OF CANADA Ltd 7 May 1973 [8 May 1972] 21607/73 Heading C1A An ore or ore concentrate containing iron sulphide (Fe x S x+1 ) (x being a whole number greater than 1), and sulphides of Ni and Cu are oxidized in aqueous slurry at 80-110‹ C. by O 2  at a partial pressure of at least 3 atmospheres with vigorous agitation so that the Fe and Ni are largely oxidized and the Cu is mainly unchanged. The material may be ground to pass through a 100 mesh Tyler screen. H 2 SO 4  or Fe 2 (SO 4 ) 3  may be added to accelerate the oxidation. At the end of the reaction the temperature may be raised to 120-200‹ C. to melt the liberated S which coats the Cu sulphides and forms readily separable pellets on cooling. The slurry may contain 20-40% solids and recycled liquors may be used. The Ni may be precipitated as hydroxide, basic carbonate or sulphide. Suitable ores are listed.
Patent GB-901058-A (GB)
Title: Pesticidal mixture
IPC: A01N43/24
Filed: 1958-06-20
Abstract: A pesticidal mixture consisting of one part by weight of 1 : 2 : 3 : 4 : 7 : 7-hexachlorobicyclo-[2 : 2 : 1] - heptene - (2) - bis - (5 : 6 - hydroxymethylene)-sulphite and from three to five parts by weight of 2 : 2-bis-(41-chlorophenyl)-1 : 1 : 1-trichlorethane, to which an inert diluent or diluents and wetting, or emulsifying agents may be added.  Other insecticides, ovicides, fungicides, herbicides, or fertilizer may also be incorporated.  Specification 810,602 is referred to.
Patent GB-1345420-A (GB)
Title: Stock inlet apparatus for a paper-making machine
IPC: D21F1/02
Filed: 1971-04-19
Abstract: 1345420 Paper-making apparatus J M VOITH GmbH 19 April 1971 [18 Feb 1970 29 July 1970] 21782/71 Heading D2A  Apparatus for supplying stock to a papermaking machine comprises a stock supply duct 1 communicating with a stock discharge duct 8 through converging rows of ducts 7. The sum of the areas of the outlets of the ducts 7 is substantially equal to the area of the adjacent end of the discharge duct. The duct 1 supplies stock to the ducts 7 through manifold pipes 5 and a mixing chamber 6, and the duct 8 terminates in a slit nozzle 9. The ducts 7 may be circular, rectangular or pentagonal, Figs. 3 to 6 (not shown). In a second embodiment, Fig. 7 (not shown), there are three rows of the ducts 7, each row being individually connected to the supply duct via manifold pipes. The upstream end portions of the ducts 7 may be of diminishing cross-sectional area. In a third embodiment, Fig. 9 (not shown), two rows of manifold pipes respectively connect the supply duct to two rows of the ducts 7 via mixing chambers.
Patent GB-786383-A (GB)
Title: Improvements in and relating to the treatment of regenerated cellulose products
Inventor: MAHOMED RAMON SIDICK
IPC: D06M13/203
Filed: 1955-07-28
Abstract: Regenerated cellulose in the form of thread, filaments, yarns, staple fibres or fabric is impregnated with an aqueous solution of propiolic acid or with an aqueous solution of propargyl alcohol and a mercuric chloride catalyst, and then dried and heated. Heating is preferably carried out at 100-150 DEG  C. for 10-60 minutes.  The water-imbibition of the regenerated cellulose is thus reduced.
Patent GB-708354-A (GB)
Title: Improvements relating to aircraft retractable landing gear
Inventor: BRIDGES DENNIS GILBERT
IPC: B64C25/14
Filed: 1951-09-17
Abstract: 708,354. Aircraft alighting gear. DOWTY EQUIPMENT, Ltd. Nov. 25, 1952 [Sept. 17, 1951], No. 21811/51. Class 4 Aircraft retractable landing gear of the kind comprising a telescopic shock absorbing leg having a torque linkage to prevent relative rotation of the telescopic parts comprises leg contracting mechanism having a member mounted on a pivot fixed to the aircraft at a point offset from the axis of retraction of the leg, which member is adapted to collapse the torque linkage during retraction and so shorten the leg, the landing gear including valve means arranged to release fluid from the shock absorber during retraction. In the embodiment of Fig. 1, the cylinder 21 is mounted telescopically within cylinder 19, and the torque linkage 24 and 25 is joined between the cylinders. An arm 48 is pivoted to link 24 and to a collar 46 on cylinder 19, which collar bears a ring 45 connected to pivot 43 fixed on the aircraft, by extensible rod 51, 52. Retraction of jack 15 breaks the strut 7, 9, and piston rod 17 of jack 15 fastened to pivot 18 pulls up the leg. Rod 51, 52 extends to a point determined by bush 50 within cylinder 51, and then pulls collar 46 along cylinder 19, collapsing the torque linkage, valves 39 and 41 are operated simultaneously with jack 15 to allow fluid to flow in or out of the shock absorber. The lost motion of rods 51, 52 allows collar 46 to move under shock absorption when the landing gear is in use, and ring 45 on collar 46 allows castoring of the leg. In the embodiment of Fig. 3, link 60 is provided with an extension 63 which is rotated about pivot 61 by contact with the fork 67 on the resiliently mounted member 65. In operation, the arm 63 is first displaced, collapsing the linkage, and then arm 65 is carried past the dead centre of the resilient device 71. The leg must be centred before retraction.
Patent GB-483447-A (GB)
Title: Improvements in endless track chains for vehicles
IPC: B62D55/20
Filed: 1937-08-09
Abstract: 483,447. Endless tracks for vehicles. ZAVODY RINGHOFFER-TATRA AKCIOVA SPOLECNOST. Aug. 9, 1937, No. 21947. Convention date, Nov. 13,.1936. [Class 79 (i)] An endless track for vehicles comprises ground plates 1 pivotally connected by pins 2 on which are mounted grousers 4 which can be swung out into an operative position (shown on the left of the Figure) for use on soft ground or ice, or set back flush with the track (shown on the right of the Figure) for use on hard ground. Spring plungers 9 seated in recesses in cross-pieces 5 of the track are engageable in slots 10 and 11 in the grousers to lock them in their operative and inoperative positions.
Patent GB-1490255-A (GB)
Title: Electric machines
IPC: H02K3/52
Filed: 1975-05-21
Abstract: 1490255 Stator winding retainers ROBERT BOSCH GmbH 21 May 1975 [28 Aug 1974] 21967/75 Heading H2A Auxiliary windings (10), (11), Figs. 1, 2 (not shown), are held on the pole cover (8), (9) of auxiliary poles of a stator by a device 16 comprising webs (12), 13, (14), 15 extending from a ring 17 adjacent one end of the stator, the webs being substantially parallel to the stator axis and extending between windings (10), (11) and main windings (6), (7) on main pole cover 2, 3. The auxiliary poles are commutating poles of a stator of a universal machine. The device 16 may be made of compressed paper or moulded integrally from plastics, e.g. polyamide. Projections 18, 19 on the webs engage opposite ends of the stator core and leads (22), (23) to the windings are retained by cast resin in grooves 20, 21 of ring 17.
Patent GB-257961-A (GB)
Title: Improvements in or relating to compressors
IPC: F25B31/00
Filed: 1926-09-06
Abstract: 257,961. Sulzer FrÞres Soc. Anon. Sept. 7, 1925, [Convention date]. Movable-abutment type; balancing moving parts; driving pumps; packing drums. - A rotary compressor for use with refrigerating and other plants comprises a casing g<1> driven by an electromotor a so that an inner disc g<2> is displaced by centrifugal force and coacts with a sliding abutment h to form suction and compression chambers communicating with pipes e, f respectively. The casing has one extension k engaging a ball-bearing i in a disc on the driving shaft l, and another extension n connected through a universal joint m to a fixed part o. A non- return valve 26 is fitted in the delivery pipe f, and a duct 27 conveys compressed fluid behind the abutment. The disc g<2> is packed by a spring- pressed wall g<3>. A counterweight 29 is provided on the shaft l to balance centrifugal thrust. The condenser c, which communicates with the delivery pipe f, is placed in a cooling-water tank p and the evaporator d, which' is connected to the suction-pipe e, is disposed in a brine tank q enclosed in a cooling cabinet r. The liquefied cooling medium passes into a tank x and so by way of a float-controlled valve e into the evaporator. The moving casing g<1> has a flexible connection with the coils. The pipes e, f may be connected to the compressor by conduits formed in the abutment h. The Specification as open to inspection under Sect. 91 (3) (a) refers also to a slot u in the abutment h alternately connecting with pipes v, w leading to condenser and evaporator respectively to control delivery of the liquefied cooling medium. This subject-matter does not appear in the Specification as accepted.
Patent GB-1175273-A (GB)
Title: Hydraulic Gear Pumps.
Inventor: PRIJATEL EDWARD ANTHONY
IPC: F04C15/00
Filed: 1967-05-11
Abstract: 1,175,273. Gear pumps. PARKER-HANNIFIN CORP. May 11, 1967 [May 24, 1966], No. 22000/ 67. Heading F1F. A hydraulic gear pump comprising a housing 2, Fig.3, including front and rear covers 3, 4 and a centre section 5 having overlapping bores forming a pump cavity 8 in which intermeshing gears 9, 10 are rotatably mounted, includes passage means 55, Fig.4, in the cavity wall connected to the pump discharge chamber 16 to extend the high-pressure zone around the gears to provide adjacent each end thereof intermediate pressure zones and a flexible wear plate 31 having its inner face adjacent the gear faces and its outer face contacting seal means providing a chamber opposite to said high and intermediate pressure zones into which high-pressure fluid is introduced whereby the portion of the wear plate opposite the high-pressure zone is fluid-pressure balanced and the portion of the wear plate opposite each intermediate pressure zone is over-balanced so as to flex said portions into sealing engagement with the gears. The seal means comprises a resilient sealing member 37, a gasket 38 and a heat shield 39 with the sealing member having a continuous oval outer margin 40, Fig.6, and a pair of circular portions 41 inter-connected by a web 44 and connected to the margin 40 by radial webs 42, 43 and slotted radial webs 59, 60 to permit high-pressure fluid into chambers 35a, 35b, 35c up to the webs 42, 43. The webs 42, 43 separate these chambers from a chamber 36 connected to the pump low-pressure chamber 15. In the region of the low-pressure chamber 15, the pressures on either side of the wear plate 31 are in balance. In the regions "B" the pressures in the tooth spaces are gradually increasing whilst the pressure in the chamber 36 is uniform resulting in the tendency of the wear plate to flex away from the gears. In the regions "A" the pressures in the tooth spaces are still gradually increasing but are opposed by uniform high-pressure in the chambers 35b, 35c resulting in the wear plate being urged sealingly against the gears. Finally in the region of the passage means 55 the pressures on either side of the wear plate are again in balance. Thus sealing engagement between the wear plate and the gears occurs over a limited area to reduce friction and wear to a minimum. The wear plate may be laminated and may comprise a bronze face with a steel backing.
Patent GB-1102408-A (GB)
Title: Dual-frequency interstage coupling for transistor amplifiers
Inventor: PHILLIPS MICHAEL
IPC: H03H7/01
Filed: 1964-05-28
Abstract: 1,102,408. Transistor amplifying circuits. RANK ORGANISATION Ltd. 28 May, 1965 [28 May, 1964], No. 22081/64. Heading H3T. In a transistor amplifier operating on two separated frequency bands, comprising as shown in Fig. 2, transistor Tr1 operating into series-connected parallel tuned circuits 21, 22, the arrangement is matched on both bands to the input impedance of a succeeding transistor amplifier Tr2 by means of a series capacitor Cc. To obtain a narrower bandwidth on the higher frequency band, for which tuned circuit 21 is used, the connection of the transistor Tr1 and capacitor Cc may be tapped down the inductor (Fig. 3, not shown). In a modification, the two tuned circuits comprise (1) for the higher frequency band, inductor L5, Fig. 4, tuned by capacitors C1, C2 in series, inductor L6 acting as a choke, and (2) for the lower frequency band, inductor L6 tuned by capacitors C1, C2 in parallel.
Patent GB-1533816-A (GB)
Title: Method of fixing connection parts of rubber offshore structures
IPC: F16L58/18
Filed: 1977-05-26
Abstract: 1533816 Corrosion protection of offshore structural parts BRIDGESTONE TIRE KK 26 May 1977 [4 June 1976] 22249/77 Heading C7E [Also in Division F2] Exposed surfaces of metal fasteners used for fastening connection parts of rubber offshore structures to other structures are protected against corrosion by covering the surfaces and surrounding rubber portions with a liquid rubber composition curable at room temperature, and curing the composition.
Patent GB-834394-A (GB)
Title: Method of preparing acrylonitrile
Inventor: JR JAMES FRANCIS GABBETT
Filed: 1958-07-11
Abstract: A catalyst for the reaction of acetylene and hydrogen cyanide to form acrylonitrile comprises unactivated charcoal impregnated with about 1.5% to about 10% by weight of an alkali metal from a solution of the metal in an inert solvent.  Liquid ammonia and methylamine are specified solvents.  Softwood charcoal is preferred.ALSO:Acrylonitrile is prepared by reacting hydrogen cyanide and acetylene at about 400 DEG  to about 700 DEG  C. in the presence of a catalyst prepared by impregnating unactivated charcoal with from about 1.5 to about 10% by weight of an alkali metal from a solution of the metal in an inert solvent, specifically ammonia or methylamine.  Pressures of from atmospheric to about 100 p.s.i., temperatures of about 450-700 DEG  C., molar ratios of C2H2 to HCN of about 0.5 : 1 to about 1.6 : 1 or more and space velocities of about 100 hr.-1 to about 1000 hr.-1 are mentioned.  Dilute acetylene streams containing less than about 15% acetylene may be used. Specified reactor surfaces are "Vycor" (Registered Trade Mark), ceramics, iron-aluminium alloys, copper and alloys thereof, e.g. brasses and bronzes.
Patent GB-405949-A (GB)
Title: The manufacture of condensation products of the anthracene series
IPC: C09B3/64
Filed: 1932-08-09
Abstract: Methylene anthrone and its nuclear substitution products are condensed with quinoid compounds containing the grouping p  --CH=CH-- in the nucleus, or substitution products thereof in which one halogen atom replaces one hydrogen atom, or compounds convertible under the conditions of the reaction into such substituted quinones.  According to examples, methylene anthrone is condensed with a -naphthoquinone, 2-chloro-a -naphthoquinone, a -naphthoquinone-dichloride, benzoquinone, toluquinone, 2 : 5 : 6 - trichlorobenzoquinone, b -naphthoquinone, naphthazarine, and methylene-2-chloroanthrone is condensed with a -naphthoquinone ; 1-chloro-methylene-anthrone is also specified.  The products are benzanthrone derivatives having substituents in the bz-1- or bz-2-position, or both, and are in some cases suitable as vat dyes of yellow shades and in others, as dye intermediates.
Patent GB-387674-A (GB)
Title: Improvements in or relating to refrigerating systems, and ebullition initiators therefor
IPC: F25B39/02
Filed: 1931-08-07
Abstract: 387,674. Refrigerating. WITHERS, J. S., 51, Chancery Lane, London.- (Kelvinator Corporation; 14250, Plymouth Road, Detroit, Michigan, U.S.A.) Aug. 7, 1931, No. 22409. [Class 29.] Compression machines.-A metal member 20 is maintained below the level of refrigerant in the evaporator 11, 12 to provide a nucleus for the formation of vapour bubbles beneath the surface of the liquid in order to aid ebullition. The member 20 may be of copper with a relatively soft and pliable central portion 21 and knurled flanges 22. A bend 23 is provided at the end of the member so that it may maintain itself in position in the tubes 12 of the evaporator by friction.
Patent GB-893829-A (GB)
Title: Process for the manufacture of calcium-tetracuproxychloride
IPC: C01G3/06
Filed: 1959-06-30
Abstract: Calcium tetracuproxychloride of formula CaCl2.4CuO.xH2O is prepared by reacting an aqueous suspension of copper oxychloride with calcium hydroxide in the form of an aqueous suspension or of an aqueous solution which contains calcium and hydroxylions as well as other ions.  The green solution changes to blue on formation of the desired salt. Excess calcium hydroxide may be used and the unreacted excess may be removed by filtration and washed, but preferably the stoichiometric amount or slightly less is employed and any residual alkalinity is removed by neutralization with carbon dioxide or sulphuric acid.  The suspension resulting is filtered and the product dried and ground or, if desired, mixed with cellulose waste liquor and then spray-dried and ground.  The ground product may be mixed with a suspension medium and surface active agents, such as casein, soap or polyvinyl alcohol, to form a fungicidal spray or dust. According to Examples, (1) calcium oxychloride suspension and milk of lime were mixed at 20 DEG  C. and the green suspension agitated for 2 hours until the free hydroxyl ions in the aqueous phase ceased to decrease.  The blue product crystallized in the form of fine platelets of formula CaCl2. 4CuO. 7-8 H2O; (2) Copper oxychloride suspension was mixed with calcium hydroxide and ammonium chloride; (4) A copper oxychloride suspension was reacted with calcium hydroxide until the solution had turned blue, after which the pH was adjusted to 6-7 by the introduction of carbon dioxide.  Rhombic lamellae of 4-8 microns size were crystallized out.  Reference is made to a prior art preparation by reacting metallic copper in the presence of air with a large excess of calcium chloride and ammonium chloride (see Specification 425,395).ALSO:Calcium tetracuproxychloride of formula Cacl2.4CuO.xH2O, prepared by reacting copper oxychloride suspension with calcium hydroxide (see Group III) is employed as a fungicide.  The crude crystals may be mixed with cellulose waste liquor, sprayed-dried and ground, or the crystals may be dried and ground alone; in either case they may be mixed with a suspension medium or surface-active substances such as casein, soap, or polyvinyl alcohol to form a spraying preparation or dusting powder.  Specification 425,395 is referred to.