baber/WOPTO huggingface dataset:
Patent GB-676846-A (GB)
Title: Improvements in and relating to suction cleaners
IPC: A47L5/34
Filed: 1950-08-17
Abstract: 676,846. Rotary brushes; stocks. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 17, 1950 [Aug. 26, 1949], No. 20435/50. Class 19. [Also in Group XXVIII] Brush strips 3, 4, Fig. 2, of preformed shape are mounted on a backing plate 41 held by locking rings 43 and set screws 44 to body sleeves 32, 33. Adjustment of the brush shaft 26 relative to a suction nozzle 1 in which it is mounted is effected manually by turning a knob 12 and hence caps 20, 28 rotatably mounted in the ends of the nozzle and having eccentric apertures 24, Fig. 4, in which are pinned the ends of the shaft 26. The knob 12 has a serrated edge 11 and makes a friction fit with the nozzle, being held by a ring 16. The cap 20 fits in a recess 18 of the knob and is driven through a tongue 22 and a groove 21. The other cap 28 is rotatably mounted in a cup 29 secured to the nozzle within a rubber bushing 30. To assist friction in retaining the knob in any particular position a spring-pressed detent may engage a serration 11. In a modification the knob carries an interior spur gear which drives a meshing gear secured to a bearing 'having the eccentric aperture for receiving one end of the brush shaft.
Patent GB-1417690-A (GB)
Title: Preparation of silicon nitride
IPC: C04B35/591
Filed: 1972-02-08
Abstract: 1417690 Silicon nitride UNITED KING- DOM ATOMIC ENERGY AUTHORITY 5 April 1973 [8 Feb 1972] 20436/75 Divided out of 1413975 Heading C1A A silicon nitride artefact is prepared by (i) heating silicon and an additive comprsing a Group IIA metal or compound in an inert atmosphere and (ii) nitriding a green artefact prepared from the product of step (i). The additive preferably is magnesium metal and constitutes 1-5% (by weight) of the total. Preferably, the silicon used is a fine powder having an average particle size of less than 25 microns; similarly the additive is also a fine powder, that having a surface area of 5000- 20,000 cm.<SP>2</SP>/g. being particularly satisfactory.
Patent GB-459922-A (GB)
Title: Improvements in or relating to leading-in-wires adapted to be sealed through vitreous envelopes
IPC: H01J5/32
Filed: 1935-07-18
Abstract: 459,922. Leading-in wires for sealed vitreous envelopes. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.- (Patent-Treuhand Ges. f³r Electrische Gl³hlampen ; 11, Ehrenbergstrasse, Berlin) July 18, 1935, No. 20481. [Class 39 (ii)] Tungsten or molybdenum leading-in wires sealed or adapted to be sealed through a vitreous envelope, more particularly an envelope of glass of high softening temperature and small coefficient of thermal expansion, are coated, at least on the part exterior to the envelope, with a layer of a metal which protects the tungsten or molybdenum from oxidation by the air. The coating may consist of a metal such as rhodium which does not oxidize in air at any temperature to which the leading- in wire is to be exposed, or a metal such as aluminium which forms in air a stable superficial layer of oxide protecting the interior of the metal from oxidation. When the protective layer consists of rhodium, which neither oxidizes nor melts during the making of the seal, the layer may be deposited on the wire before the latter is sealed into its envelope. If an aluminium protecting-layer is used, the leading-in wire is sealed into the envelope and the parts exterior to the envelope subsequently coated with aluminium. Specification 259,927, [Class 39 (ii)], is referred to.
Patent GB-603636-A (GB)
Title: A composition for treating soil
IPC: A01N29/02
Filed: 1944-10-23
Abstract: The Specification as open to inspection under Sect. 91 comprises also a cultivator (described with reference to drawings) of the same general type as that described in Specification 556,906 but having an additional system for injecting into the soil a non-phytocydal soil fumigant simultaneously with liquid ammonia.  This subject-matter does not appear in the Specification as accepted.ALSO:A soil fumigating composition comprises ammonia or other quickly-assimilable fertilizer, e.g. ammonium sulphate, sodium nitrate or phosphoric acid, and as a soil fumigant a halogenated unsaturated lower hydrocarbon containing 3 to 16 carbonatoms in the molecule.  The composition may contain a mutual solvent for the fumigant and ammonia or inert solid-carriers, e.g. talc. bentonite or other porous clays or fertilizers if they are solids inert to the fumigant, or it may comprise an aqueous emulsion such as of 1.3-dichloropropene-1 in ammoniated water.  The preferred fumigants are the allyl-vinyl type polyhalounsaturated hydrocarbons containing from 3 to 6 and particularly 3 carbon atoms with or without saturated hydrocarbons containing 3 carbon atoms, e.g., 1.3-dichloropropene-1 with or without 1.2-dichloropropane containing trichloro- and tetrachloropropane.  Other agents include 1.1-dichloropropene-2, 1.1-dichloro-2-methylpropene-2; 1.4-dichlorobutene-2 and 1-chloro-2-chloromethyl-propene-2.  Stabilisers may be added such as epichlorhydrin, propylene oxide, ethylene oxide, methyl vinyl ketone, acrolein, amylamine, dimethylamine, ethanolamine, glycerol and lime-water.  Specifications 322,179, [Class 81(i)], and 590,368 are referred to.
Patent GB-616886-A (GB)
Title: Improvements in or relating to synthetic rubber compositions
IPC: C08F36/04
Filed: 1946-07-09
Abstract: Synthetic diolefin rubbers containing more than 50 per cent diolefin, such as GR-S and GR-N, polybutadene or polyisoprene are mixed with a saturated copolymer of an aliphatic olefin and a polymerizable hydrocarbon having a cyclic nucleus, prepared at - 50 DEG  to - 103 DEG  C. in the presence of a Friedel Crafts catalyst, and containing 30 to 75 per cent by weight of hydrocarbon having a cyclic nucleus and having an intrinsic viscosity greater than 0.5. Aliphatic olefins specified are isobutylene, isopentene, and a pentene obtained by dehydrating secondary amyl alcohol.  Cyclic hydrocarbons specified are styrene, a -methyl styrene, p-methyl styrene, a -p-dimethyl styrene and indene.  Many Friedel Crafts catalysts are specified and the polymerization may be effected using propane, ethane, ethylene, methyl chloride or carbon dioxide.  The diolefin rubber may be a polymer of butadiene or isoprene or a copolymer of these with styrene or acrylonitrile. Pigments and plasticizers may be incorporated in the mixture and stabilizers such as zinc stearate used in films.  By heating with zinc oxide, carbon, sulphur, stearic acid, benzothiazyl disulphide or tetramethyl thiuram disulphide the composition may be vulcanized.  Specification 586,466 is referred to.ALSO:Synthetic diolefin rubbers containing more than 50 per cent diolefin, the GR-N and GR-S types polybutadiene and polyisoprene being specified, are mixed with a saturated copolymer of an aliphatin olefin, such as isobutylene, and a polymerisable cyclic hydrocarbon, prepared at -50 to -103 DEG  C. in the presence of a Friedel Crafts catalyst, and containing 30 to 75 per cent by weight of cyclic hydrocarbon, and having an intrinsic viscosity greater than 0.5.  Pigments and plasticizers may be added and the composition may be milled with the usual vulcanizing agents and heated.  Specification 586,466, [Group IV], is referred to.
Patent GB-665406-A (GB)
Title: Improvements in unidirectional pulse producing electric circuits
IPC: B23K11/26
Filed: 1949-08-08
Abstract: 665,406. Condenser control systems for A.C. welding machines. IGRANIC ELECTRIC CO., Ltd. Aug. 8, 1949 [Aug. 9, 1948], No. 20559/49. Class 38 (iv). A welding ignitron 26 is controlled by a condenser 31 and a firing valve 24. During non-welding periods the condenser charges over rectifier 19 and contacts 20 of a switch 20, 21, 38. When a weld is to be made the switch is operated to open the charging circuit at 20 and simultaneously to reduce (by closure of contacts 38) the magnitude of a D.C. holdoff bias applied to valve 24 from a continuously charged condenser 32. The reduced hold-off voltage is overcome by an adjustably phased peaky " turn-on " voltage derived from a phase-shift network 34, 35 and transformer 41. The value then fires and discharges the condenser 31 either into an ignition transformer 23, or directly into the igniter circuit, of the ignitron, which becomes conducting and allows a pulse of welding current to flow. Specification 656,641, [Group XL (a)], is referred to.
Patent GB-771094-A (GB)
Title: Method of producing aluminium-manganese alloys
IPC: C22C1/03
Filed: 1955-07-15
Abstract: Aluminium-manganese alloys are produced by reduction of manganese-containing raw materials, preferably pre-dried, with an excess of aluminium in a cryolite melt.  Reduction may be carried out in an electric furnace, preferably an induction furnace, the resulting molten materials being allowed to separate into the alloy and an alumina-cryolite melt, which latter is electrolysed for recovery of the aluminium.
Patent GB-699141-A (GB)
Title: Production of sulphones
Inventor: GOLDBERG ALAN AUGUST
Filed: 1950-08-21
Abstract: Sulphones having the general formula <FORM:0699141/IV (b)/1> in which R1 is a group X-C6H3-COOH, wher X is hydrogen or halogen and the carboxyl group is in ortho position to the -NH-linkage, and R2 is hydrogen or R1, are prepared by oxidizing a sulphide of the general formula <FORM:0699141/IV (b)/2> where Ac is a carboxylic acyl group and Y is a nitro group or a group of the formula -N(Ac)R2, the resulting sulphone being then deacylated and the nitro group, if present, reduced to an amino group.  Suitable oxidizing agents are aqueous hydrogen peroxide, potassium permanganate and chromic acid, and the oxidation may be carried out in the presence of an inert water-miscible organic solvent, e.g. acetic acid, acetone or dioxane. The starting materials may be prepared by acylation of the compounds <FORM:0699141/IV (b)/3> by heating in pyridine solution with acyl anhydride.  In examples: (1) 4-(5-chloro-2-carboxyphenylamino) - 41 - acetamido diphenyl sulphide is acetylated with acetic anhydride in pyridine and the 4-(5-chloro-2-carboxyphenylacetamido) - 41 - acetamido diphenyl sulphide formed is oxidized with potassium permanganate in acetic acid solution and then hydrolysed with sodium hydroxide solution to yield 4-(5-chloro-2-carboxyphenylamino)-41-amino diphenyl sulphone; and (2) 4,41-bis-(5-chloro-2-carboxyphenylacetamido) diphenyl sulphide obtained by acetylation of 4,41-bis-(5-chloro-2-carboxyphenylamino) diphenyl sulphide in pyridine is oxidized with potassium permanganate in acetic acid and then hydrolysed with caustic soda solution to give 4,41-bis-(5-chloro-2-carboxyphenylamino) diphenyl sulphone. Specifications 642,091 and 642,092 are referred to.
Patent GB-522625-A (GB)
Title: Improvements in trouser supports
IPC: A41F5/00
Filed: 1939-07-15
Abstract: 522,625. Trouser supports. WHITE, G. E. July 15, 1939, No. 20661. [Class 141] Trouser supports consist of. a belt to which are attached upstanding wire clips formed with slots in which the stems of the buttons on the inside of the trousers fit. The clips are formed of an endless piece of wire with loops 20 for the belt and with converging parts leading to a horizontal channel 16. The buttons are passed through the clip between the members 17 and the stem passed into the channel. The clips may be incorporated in the trousers.
Patent GB-704272-A (GB)
Title: Improvements in and relating to vehicles, in particular fire tenders
IPC: A62C27/00
Filed: 1951-09-03
Abstract: 704,272. Tank vehicles. NEAVERSON, R. A. Sept. 3, 1952 [Sept. 3, 1951], No. 20706/51. Class 108(1) A tank vehicle such as a fire tender is provided with a self-supporting tank 16 secured directly to the chassis longitudinals 10 and having cut-outs 24 for the road-wheels. To the side walls of the tank are secured uprights 22 preferably in the region of the apertured partitions 20, the uprights 22 supporting a load-receiving body the floor of which may be the top of the tank.
Patent GB-720019-A (GB)
Title: Improvements in and relating to paper feeding apparatus for printing machines and the like
Inventor: LOOSE HENRY
IPC: B65H9/10
Filed: 1951-09-03
Abstract: 720,019. Feeding sheets. LINOTYPE & MACHINERY, Ltd. Dec. 3, 1952 [Sept. 3, 1951], No. 20744/51. Class 100 (1). In a side-registering device, such as that described in Specification 501,364, wherein the sheets are gripped and moved laterally up to a positioning stop by means operated by a flexible coupling such as a Bowden wire, a sheet guide plate is provided which is supported independently of the device and is adjustable relatively to the sheets being fed to the printing machine. As shown, the side lay is similar to that described in Specification 619,813, an operating shaft 7 being connected to a Bowden wire 24 the other end of which carries a member actuated by a cam on the printing machine. Outward movement, i.e. to the left, of the shaft 7 allows a roller 18, under the action of a spring 21, to drop on to and grip a sheet on a support plate 26 attached to an extension 27 (not shown) of a reciprocating carriage 12. This carriage is moved by continued movement of the shaft 7, and the sheet is thus moved transversely. The carriage 12 and other parts are returned by a spring 11. The side lay is carried by a two-part clamping member 1 secured to a rod 3 by a thumb-screw 2. Sheet-guides.-Each sheet is guided as it is fed between the roller 18 and plate 26 by a curved plate 29 pivoted at 30 to a bracket 31 extending from a two-part clamping member 32 secured by a thumb-screw 32a to the rod 3. The plate 29 is urged upwardly against the end of an adjustment screw 33 by means of a spring 34.
Patent GB-1343187-A (GB)
Title: Sorging of gas under pressure
IPC: F17C3/00
Filed: 1971-04-19
Abstract: 1343187 Storing gas under pressure SVENSKA ENTREPRENAD AB 19 April 1971 [2 Feb 1970] 20786/71 Heading F4P Gas 5 stored in an underground reservoir 1, which has a wall which is not reliably gas-tight, is maintained within reservoir 1 by applying the pressure of the free gas 12 above the liquid gas 5 via a conduit 7 to a body of liquid in a cavity 6. Bores 8 in the ground lead the liquid body to the outside of reservoir 1 so that, at all points on the reservoir wall to which the body of liquid is applied, the pressure of the body of liquid is greater than that of the gas in reservoir 1. Leakage of gas from reservoir 1 is thus resisted.
Patent GB-1183465-A (GB)
Title: Valve Rocker Arm for Internal Combustion Engine
IPC: F01L1/18
Filed: 1967-05-04
Abstract: 1,183,465. Making valve rockers. MITSUYA SEIKO K.K. 4 May, 1967 [7 May, 1966], No. 20856/67. Heading B3A. [Also in Division F1] A valve rocker arm stamped from sheet metal has two ends 13, 14 and a median bent portion, one end 13 being bent relatively to the median bend and the other end adapted for carrying an adjustable abutment 18, Fig. 6, lateral margins 11 each being bent through 90 degrees into two parallel walls forming a channel section and the walls providing pivots bearing support 15 for the rocker arm. The invention also includes a method of making the rocker arm from a single metal sheet in which the arm is blanked, bent to form the walls and curved end, formed with holes and hardened, e.g. by thermo-salt bath, cyanide process or sulphur taftrizing. In a modification the parallel side walls (11<SP>11</SP>), Fig. 5 (not shown), extend almost the entire length of the rocker arm.
Patent GB-1151784-A (GB)
Title: Telephone Apparatus.
IPC: H04M1/03
Filed: 1966-05-11
Abstract: 1,151,784. Sets. SOC. ITALIANA TELECOMMUNICAZIONI SIEMENS S.p.A. 11 May, 1966 [29 Jan., 1966], No. 20879/66. Heading H4J. In a telephone handset (Fig. 2) comprising a mouthpiece 22 and a receiver 20 hinged together, the mouthpiece 22 includes a microphone, and a dial 38 is recessed in a cavity in the receiver 20. The handset may be closed, the mouthpiece 22 fitting into the dial cavity (Fig. 1, not shown). On opening the handset, two sets of switch contacts 46, 48 (Fig. 3a) are operated by a lever 50, 52, respectively, and a concave wedge 56 on each outer spring contact ensures that interruption of contact does not occur by minor relative oscillation of the two parts 20, 22. A helical spring 60 aids maintenance of the handset in the open position. Cable 76 between the two parts 20 and 22 runs from one side of part 20 to the other side of part 22 through an insulating tube 78 parallel to the axis of rotation 64. The receiver 20 comprises a base-plate 26 and a cover-plate 30. The mouthpiece 22 comprises a base-plate 28 and a cover-plate 32. The underside of the mouthpiece 22 has a U-shaped rubber pad (150), Fig. 13 (not shown), for ensuring sufficient grip of the base when placed on a horizontal surface and for absorbing shock when putting down the apparatus. A latch (156), Fig. 14 (not shown), provides stable closure and may be opened against spring action by pressing a bolt (160). A printed circuit board (88), Fig. 4 (not shown), has at opposite ends a choke (96) and a transformer (94) between which is fitted a circuit sub-assembly (86). The sub-assembly is fixed to the rear of the receiver 20 by two U-shaped brackets (100) one of which accepts the transformer (94) while the other accepts the choke (96). The receiver transducer and microphone are held by metal straps also described in Specification 1,151,785.
Patent GB-1074186-A (GB)
Title: Apparatus for pouring molten metals in predetermined amounts
IPC: B22D17/30
Filed: 1966-05-11
Abstract: 1,074,186. Delivering measured quantities of liquid. BROWN, BOVERI & CO. Ltd. May 11, 1966 [May 13, 1965], No. 20882/66. Heading B8N. [Also in Division F4] An apparatus for pouring predetermined amounts of molten metals comprises a crucible 1 forming a measuring chamber which is pivotally mounted on an arm 3 of a transportation device and provided with a spout-like filling and discharge opening 7 adapted, in the filling position, to dip into the molten metal 8 and a further opening 9 for connection to a protective gas supply pipe 10, the second opening not dipping into the metal when the crucible is in the filling position. The crucible is mounted on a holding device 2 which is caused to swivel about a pivot 6 by means of a worm-and-wheel drive 4, 5. In operation, with the crucible in the position shown, the arm 3 is lowered to a predetermined position so that the molten metal rises into the crucible assisted, if necessary by a reduction in pressure of the gas in the pipe 10. The crucible is then pivoted and as soon as air starts to enter the opening 7 the pressure of the gas is increased slightly above atmospheric so that the space above the metal in the crucible is scavenged by the gas. The arm 3 is then moved to the point where the metal has to be poured and the crucible pivoted so that the metal flows out through the spout 7.
Patent GB-341453-A (GB)
Title: Improvements in or relating to the modification of the physical properties of thickened fatty oils
Filed: 1929-07-08
Abstract: Thermoplastic products are obtained by dispersing modifying agents in thickened fatty oils by heating at temperatures exceeding 100 DEG  C. The modifying agents are those disclosed in Specifications 287,943, 289,414, 289,415, 321,689, 321,690, 321,691, 321,723, 321,724, 321,725, 321,726, [all in Class 91, Oils &c.], 321,727, 337,733 and 337,735, [all in Class 95, Paints &c.], with the exceptions of primary aromatic diamines, of mono-amines with more than one benzene ring, and of mono-amines which are benzene derivatives with long alkyl substitution chains. The modifying agents may be used in solution in inert organic solvents, such as benzene, methyl-ethyl ketone, ether, acetone, or a mixture of ether and acetone.  The dispersion is usually effected at 120 DEG -130 DEG  C., in a few cases at 200 DEG  or 250 DEG  C., and preferably at sub-atmospheric pressure.  The products may be sulphurized, emulsified, or otherwise treated as in the above Specifications.  Modifying agents specially suitable are those which are fusible or soluble at the temperature employed, organic metal compounds of the type mentioned in Specification 287,943, [Class 91, Oils &c.], organic salts; lithium carbonate and sulphite; salts of alkali and alkaline-earth metals, zinc and magnesium with weak acids, such as the sulphides, sulphites and carbonates, and soaps of these metals.  Other examples mentioned are benzene-sulphonic acid, 2.5-dichlorbenzene-sulphonic acid, p-nitrophenol, o-nitrophenol, benzene sulphonyl - chloride, naphthalene tetrachloride, chlorsulphonic acid in benzene solution, barium thiocyanate dissolved in methyl-ethyl-ketone.  In examples of the process, linseed oil stand oil is modified with lithium carbonate or lithium sulphite, and the solid product vulcanized forming a rubber substitute; with p-nitrophenol in benzene solution forming a viscous paste; with o-nitrophenol in benzene solution forming a solid gel; with benzoic acid in benzene solution forming a thick oil; with benzene sulphonyl-chloride in benzene solution forming a gelled highly viscous oil; with chlorsulphonic acid in benzene solution forming a sticky elastic gel; with barium thiocyanate dissolved in methyl-ethyl-ketone forming a soft elastic solid; with naphthalene tetrachloride in ether solution forming a sticky elastic mass; with 2.5-dichlorbenzene-sulphonic acid alone or in benzene solution forming an elastic gel.  Specification 318,562, [Class 91, Oils &c.], also is referred to.  The Provisional Specification comprises also the use of modifying agents mentioned in Specifications 337,732 and 337,734, [both in Class 91, Oils &c.], including benzidine. Reference has been directed by the Comptroller to Specification 153,942, [Class 91, Oils &c.].
Patent GB-962627-A (GB)
Title: Improvements relating to springs
IPC: B21F33/04
Filed: 1963-05-27
Abstract: 962,627. Connecting springs; bending cutters. SPUEHL A.G. May 27, 1963 [May 28, 1962], No. 21008/63. Headings B3E and B3W. A cutting and loop-forming device on spring clamping tongs, which serve when closed to hold together adjacent end turns of two coil springs 3, 4 which are then interconnected by an advanced and simultaneously rotated wire spiral 5, comprises an anvil 6 on one of the jaws 1, 2 of the tongs, said anvil having a cutting edge 12 and a recess 16, and a punch 7 reciprocatingly movable relatively to said anvil 6, said punch having a recess 18 opposite said anvil recess 16 and a cutting edge 19 co-operable with said anvil cutting edge 12 so that during the working stroke of the punch the wire spiral 5 is cut by the co-operation of these cutting edges and the newly formed spiral end is formed to a flat loop 22 between the walls of these two recesses 16, 18, said loop 22 surrounding the wire of one of the coil spring end turns 3 adjacent the point of inter-connection of said end turns. The punch 7 is moved forward to cut and bend by a plunger 43 bearing against, but not connected to, its rear end, the plunger being moved forward by a pneumatically operated piston 42. The plunger 43 is retracted by a spring 45 and the punch 7 by a spring 47.
Patent GB-365493-A (GB)
Title: Improvements in the manufacture of rubber
IPC: C08K5/19
Filed: 1931-07-23
Abstract: The ageing or rubber and the like is retarded and the vulcanization accelerated by the addition to the mix of a primary aromatic diamine salt of an aromatic carboxylic acid, or of an aliphatic di- or tri-carboxylic acid.  Suitable aromatic amines are phenylenediamines; toluylenediamines; naphthylenediamines, benzidines, tolidine, dianisidine, and suitable acids are benzoates, phthalates, naphthoates, naphthalates, oxalates, malonates, tartarates, and citrates.  The salts may be used as antiagers for vulcanized rubber, by painting the rubber with a solution of the salt or where possible using the latter in the vapour form.  Examples are given showing the antiageing properties of these compounds, of which 2 : 4 toluylene diamine benzoate, and oxalate are the preferred embodiment, although 1 mol. of diamine may be reacted with 2 mols. of acid, or where a dicarboxylic acid is employed, 2 mols. of the diamine may be reacted with 1 mol. of the acid.