baber/WOPTO huggingface dataset:
Patent GB-1104711-A (GB)
Title: Fluorine compound
Inventor: LAWTON EMIL ABRAHAM
IPC: C01B21/084
Filed: 1965-02-15
Abstract: Trifluoramine oxide ONF3 which is a colourless gas of melting-point about - 161.5 DEG  C. and boiling-point about - 89 DEG  C. is prepared by reacting difluoramine with ClF3 and an oxygenated halogen compound, for example ClO2, FClO2 or FClO3.  The reactants are first condensed at below - 126 DEG  C. and then the temperature raised, reaction taking place in the gas phase, for example at - 85 DEG  to 30 DEG  C.  The trifluoramine oxide is separated from impurities and by-products by condensation under high vacuum through a series of cold traps, or by vapour phase partition chromatography.  Any SiF4 formed from glass apparatus is removed by complexing with KF.  In an alternative reaction process, a complex of difluoramine and an alkali metal fluoride is first formed.  In Example 5, trifluoramine oxide is reacted with chlorotrifluoroethylene to form nitrogen trifluoride. Trifluoramine oxide may be used as a liquid oxidizer in rocket propellants, for example in conjuntion with hydrazine or pentaborane. Reference has been directed by the Comptroller to Specification 1,038,840.
Patent GB-1011894-A (GB)
Title: Compressors or expansion engines having piston and bearing ring combinations
Inventor: HARGREAVES ROGER
IPC: F16J1/02
Filed: 1963-02-18
Abstract: 1,011,894. Pistons. BRITISH OXYGEN CO. Ltd. May 15, 1964 [Feb. 18, 1963], No. 6531/63. Heading F2T. In a piston and bearing ring assembly for a gas compressor or expansion engine and comprising a bearing ring housed in an annular recess in the piston, passage of gas past the bearing ring is facilitated in use by one or more transverse grooves which are provided in either the bearing ring or the said recess. The bearing ring may be of carbon, graphite or P.T.F.E. In an example a piston has three graphite bearing rings each of which is formed in halves and having four grooves traversing its outer face. In a modification, the bearing rings are ungrooved but a flow path is provided around each ring by communicating grooves cut in the bottom and sides of each ring recess.
Patent GB-744996-A (GB)
Title: Improvements in or relating to thermo-setting compositions
Inventor: ARMITAGE FRANK
IPC: C08F212/14
Filed: 1953-03-10
Abstract: A thermosetting composition comprises an admixture of a polyhydric alcohol ester containing the radical of a hydroxylated fatty oil acid esterified with a conjugated ethylenically unsaturated monobasic acid, and a copolymerizable ethylenically unsaturated monomer which is preferably styrene but may also be alpha-methyl styrene, methyl acrylate, methyl methacrylate, vinyl acetate, acrylonitrile, or acenaphthylene, which may be used alone or in admixture with styrene. The polyhydric alcohol esters are esters of alcohols such as glycerol, pentaerythritol, mannitol and sorbitol with fatty oil acids such as the acids of linseed, tung, oiticica, and castor oils, and eleaostearic acid, at least one of which is a hydroxylated acid, the hydroxy group of which is esterified with a conjugated ethylenically unsaturated acid such as sorbic, beta vinyl acrylic, and dehydrogeranic acids, specified is the sorbic acid ester of castor oil.  The monomeric mixture may be copolymerized by heating in the presence of tert.-butyl hydroperoxide, cobalt naphthenate and methyl aniline. An electric coil may be immersed in the monomeric material which is then polymerized in situ.ALSO:Polyhydric alcohol esters of acylated hydroxy acids are produced from polyhydric alcohols such as glycerol, pentaerythritol, mannitol and sorbitol the hydroxy groups of which are esterified with fatty oil acids such as the acids of linseed, tung, oitica and castor oils, and eleastearic acid, at least one of which is a hydroxy acid the hydroxy group of which is esterified with a conjugated ethylenically unsaturated acid such as sorbic, beta-vinyl acrylic or dehydrogeranic acid.  In an example castor oil is esterified with sorbic acid in solution in xylene in the presence of p-toluene sulphonic acid.
Patent GB-475319-A (GB)
Title: Improvements in and relating to refrigerating apparatus
IPC: F25B39/02
Filed: 1937-03-05
Abstract: 475,319. Refrigerating. BRITISH THOMSON-HOUSTON CO., Ltd. March 5, 1937, No. 6606. Convention date, March 5, 1936. [Class 29] Evaporators.-In a flooded evaporator for refrigerating-machines formed by securing together indented sheets of metal and thereby forming headers 23 connected by conduits 24, a compressor suction pipe 19 is connected to the headers 23 through passages 25 provided with pockets 28. Liquid refrigerant mixed with lubricant is carried by the vaporized refrigerant from header 23 to passage 25 where the mixture is caught in the pockets 28. The latter decrease in height towards the suction pipe 19 so that liquid tends to overflow from pocket to pocket in the direction of flow of the gases. As the mixture flows along the passage 25, refrigerant is progressively evaporated out of it so that only practically pure lubricant reaches the last pocket. The flow of gas then carries the lubricant from the last pocket back to the compressor through pipe 19.
Patent GB-1527318-A (GB)
Title: Data processing apparatus
IPC: G06F15/177
Filed: 1977-04-27
Abstract: 1527318 Data processing INTERNATIONAL BUSINESS MACHINES CORP 27 April 1977 [3 May 1976] 6610/78 Divided out of 1527316 Heading G4A The description is similar to that of Specification 1,527,316 from which this application is divided but the claims are directed to the memory control circuit for handling requests for access to an external memory by a plurality of processor chips.
Patent GB-608922-A (GB)
Title: A process for manufacturing a product soluble in water from natural rubber, gutta percha, balata and other natural rubber-like products
IPC: C08C19/00
Filed: 1946-03-04
Abstract: Water soluble reaction products are obtained by treating natural rubber, gutta percha, balata or other natural rubber-like products with sulphur dioxides, and then treating this product with an alkaline substance to convert it entirely or partly into a product soluble in water.  The alkalis may be alkali metal and alkaline earth metal hydroxides, alkali metal carbonates and organic bases, such as triethanolamine and pyridine.  The alkaline process is preferably effected in an organic dispersing agent such as alcohol or ether.  In examples, rubber in benzene solution is reacted with sulphur dioxide and the product boiled with methyl alcohol and aqueous caustic potash, after centrifuging to remove insolubles it was acidified and used in dilute alkali metal hydroxide solution as a wetting agent.
Patent GB-561960-A (GB)
Title: Improvements in or relating to means or apparatus for effecting or facilitating the manual actuation of treadles in the working of leather rolling and other machinery
IPC: C14B1/30
Filed: 1942-05-19
Abstract: 561,960. Leather - rolling machines. WILSON, E. G. May 19, 1942, No. 6751. [Class 76] [Also in Group XXXI] A treadle, or manually operated lever for application in leather rolling and other heavy duty machinery is mechanically assisted to effect its working stroke by means of a frictionhand device engaging a continuously rotating drum. The device comprises a double lever j to which are pivoted at n the treadle-lever proper l and a link d connected to the rolls or other part of the machine it is desired to actuate. The lever j is pivoted on the shaft e of a brake drum f driven at slow speed through reduction gearing from the actuating drive of the machine. A brake band g is pivoted at h to the lever, and connected through an adjustable rod m to a bell-crank portion l<1> of the treadle lever l. Springs q, interposed between the lever l and lever j, are of sufficient strength to allow an operator to rest a foot on the treadle c without tightening the band g on the drum until it is desired to operate the mechanism.
Patent GB-376298-A (GB)
Title: Improvements in and relating to electric circuit-breakers
IPC: H01H73/30
Filed: 1931-03-04
Abstract: 376,298. Automatic circuit-breakers; snap-action switches. STOTZ-KONTAKT GES., (formerly STOTZ GES. ABT. DER BROWN, BOVERI, ET CIE), Voltastrasse, Neckarau, Mannheim, Germany.) March 4, 1931, No. 6782. Convention, date, March 4, 1930. [Class 38 (v).] An automatic circuitbreaker e, 3, 4 with overload releases 6, 7, and 8, 9, for house installations, is associated with a quick-closing switch which has its movable contacts 11, 12 spring actuated, but arrested at the commencement of the closing movement by a U-shaped spring i, the ends of which are forced apart by a wedge k, as the closing movement continues, until the detention of the contacts ceases, and the switch closes rapidly. On depressing a button a the circuit-breaker e, 3, 4 is first closed through a toggle, and a member g is moved downwards to bring a slotted projection r of the bridge-piece 11, 12 on to the top of the spring i. Thereafter the bridge-piece remains stationary while the wedge k attached to the member g continues to move, compressing a spring h, and forcing the ends of the spring i apart until the projection r can pass through, when the spring h closes the contacts rapidly. The circuit is opened on overload by an electromagnetic release 6, 7, operating on the toggle of the circuit-breaker e, 3, 4, or by a thermal release 8, 9, acting on a rod attached to the pushbutton a, the circuit-breaker opening first in both cases. Both sets of switch contacts are contained within a common spark chamber.
Patent GB-843104-A (GB)
Title: Driving arrangements for multiple cylinder radial pumps
IPC: F04B1/04
Filed: 1956-06-11
Abstract: 843,104. Reciprocating pumps. PALMER, J. E. June 11, 1956 [June 25, 1955], No. 6828/58. Divided out of 843,103. Class 102(1). A radial cylinder pump has two pairs of opposed pistons and for each pair of pistons there is a yoke 56 surrounding an eccentric 54, the pair of pistons being connected to the yoke by rods 49 ; one pair of rods 49 is cranked at 491 so that the cylinders may lie in a common plane.
Patent GB-1385799-A (GB)
Title: Method and apparatus to refine melts from solid impurities
IPC: C22B9/02
Filed: 1972-02-15
Abstract: 1385799 Filtration of solid impurities from melts SPETSIALNOE KONSTRUKTORSKOE BJURO GIDROIMPULSNOI TEKHNIKI SIBIRSKOGO OTDELENIA AKADEMI I NAUK SSSR and NOVOSIBIRSKY OLOVYANNV KOMBINAT 15 Feb 1972 6884/72 Heading B1D [Also in Division C7] Solid impurities are removed from a melt, such as molten tin, lead, zinc or sulphur, by immersing a rotary filter 6 in a bath 1 of the melt, the filter being rotated by drive 5 (Fig. 7) whereupon impure melt is drawn through hole 19 into the filter which retains the solid impurities but discharges refined melt through clearances between disks 16, 17 and the inner wall of cylinder 15, which may be formed with filtering units. To retain the filter below the surface of the melt, the rotor 2 is attached, by sleeve 23 and bearing 24, to a stationary pan 25 floating on the surface of the melt. Heavy impurities are prevented from precipitation in bath 1 by impeller 29 attached to the base of the filter. The solid impurities, retained in the filter, are discharged therefrom by raising disks 16 and 17 by piston 13 so that the impurities are forced through ports 26 into pan 25: When refining a metal such as tin having a large content of partially soluble impurities, e.g. arsenic, the melt temperature is gradually reduced during the filtration to about 5 to 10‹C above the crystallization point of the melt. In Fig. 8, the inlet part 19 of rotary filter 6 is immersed in the melt, and the refined melt is discharged through holes in drum 30 into a layer of molten flux. Solid impurities are removed from the filter by knife 31 which is rigidly connected to disk 16 seated on rotor 2. In refining zinc from iron, the flux may be zinc chloride. Another suitable type of filter comprises two conical dishes with their bases facing each other with very small clearance (Figs. I and 2, not shown).
Patent GB-815024-A (GB)
Title: An improved folding chair
IPC: A47C4/20
Filed: 1957-03-01
Abstract: 815,024. Folding seats. ANTIFERENCE Ltd., and BEST, N. M. Feb. 27, 1958 [March 1, 1957], No. 6907/57. Class 52(2) A folding chair has front legs 11A, rear legs 12A and a back rest 14 all pivoted to a seat member 15, arm rests 13A pivoted to the back rest 14 and to front legs 11A, and members 24, also pivoted to the arm rests, telescopically engaged with the rear legs 12A. The legs are of tubular metal and in a modification the front and rear pair of legs are each formed at their lower ends integrally with a cross member.
Patent GB-1515701-A (GB)
Title: Plug for voltage adaptation
IPC: H01R27/00
Filed: 1975-02-19
Abstract: 1515701 Electric plug GILLETTE CO 15 Jan 1976 [19 Feb 1975] 6932/75 Heading H2E An insert 40 can be inserted into a plug 30 (Fig. 3) in four different orientations so that the plug 30 can be connected to a 110 V or 220 V socket having round or flat contacts. The insert may only have one pair of pins in which case it can be inserted only in two different orientations. A transformer 20 may be incorporated in the plug casing (Fig. 3) or it may be incorporated in the appliance (not shown) carrying the plug and connected to the plug (Fig. 1) through cable 9. The plug comprises a hollow casing 1 (Fig. 1) open at one end to receive insert 2, and housing terminals 3 A-D connected to conductors 8 of cable 9. Free space 12 provided in the casing accommodates the unused pins 4 or 5 of insert 2, which has bridging members 16 A-D and 18 A-D for making the correct connections between pins 4, 5 and terminals 3 A-D, and apertures 51 (Fig. 3) to receive terminals 32B, 32C, in two different orientations. Means may be provided for securing the insert in the casing, e.g. a pair of opposed internal lips (23, Fig. 1A, not shown) on casing 1 which snap into a pair of corresponding recesses on insert 2, or studs 41 and slots 36 (Fig. 3). Casing 1 (or 30 in Fig. 3) may be an integral body or may be formed in two parts which can be fastened together.
Patent GB-308447-A (GB)
Title: Improvements in fluid pressure brake apparatus for vehicles
IPC: B60T13/46
Filed: 1928-03-06
Abstract: 308,447. Consolidated Brake & Engineering Co., Ltd., and Rawlings, V. P. March 6, 1928. Fluid-pressure. - In vacuum brake cylinders the trunnions are formed or provided on the foundation ring to which the metal casing constituting the reservoir or upper vacuum chamber is fixed and to which the lower part of the cylinder is detachably secured. The usual trunnion plates are thus avoided and an upper casing of maximum diameter can be provided. A cylinder of the " combined " type is shown and comprises a foundation ring 3 formed by casting, forging, stamping or by bending and welding the ends ot a length of steel of the required section. The casing or reservoir 1 and the upper cylinder part 2 are welded to the ring 3 and the ring 5 carrying the lower cylinder part 4 is bolted thereto. The trunnions 10, 11 may be integral with the ring 3 as shown, or they may be welded or bolted thereto. A passage 12 for the connection of the trainpipe may be formed in one of the trunnions and extend through a thickened part of the ring 3. The casing 1 may be of the pressed steel type of the form shown by the full lines in Fig. 1 or it may as indicated at 1<a> be built up of a top plate welded to a plate bent to cylindrical shape and welded at the meeting edges. The release valve may be attached to the casing 1 or if of the equalizing type 16, Fig. 4, having the train-pipe connection, a boss 18, therefor may be provided on the ring 3. A foundation ring having the trunnions provided thereon may be used for a cylinder of the type having a diaphragm piston and a separate reservoir in which case one of the trunnions may have a passage therethrough for the connection of the reservoir.
Patent GB-788177-A (GB)
Title: Improvements in or relating to electrical switch contacts
IPC: H01H1/021
Filed: 1955-03-10
Abstract: 788,177. Temperature-sensitive resistors. SOC. LE CARBONE LORRAINE, and MILLET, J. March 10, 1955 [March 18, 1954], No. 7058/55. Class 37. [Also in Group XXXVII] A switch contact comprises mixture of silver and a thermistor material consisting of 45 per cent each of cobalt and manganese oxides and 10 per cent of nickel oxide, the silver forming from 65 to 90 per cent of the whole.
Patent GB-600320-A (GB)
Title: Improvements in wave filters
IPC: H03H9/00
Filed: 1945-03-21
Abstract: 600,320. Electric filters. WESTERN ELECTRIC CO., Inc. March 21, 1945, No. 7097. Convention date, March 23, 1944. [Class 40 (viii)] An impedance transforming wave-filter comprises a lattice network together with a series inductance at one end and a shunt inductance at the other. The Specification considers a lattice 5, Fig. 2, with impedance transforming ladder-type half-sections 6, 7 at either end, each having cut-off frequencies f1 and f4 and the same mid-band frequency as the lattice, and assumes an ideal transformer inserted between the lattice and the end section 7. The transformer and capacity CA are then replaced by an equivalent network as described in Specification 266,055, [Class 40 (iii)]. By suitably choosing the impedance transformation ratio of the transformer it is shown the combination of the transformer and end section 7 can be reduced to section 12, Fig. 5, in which the capacities have the same values C1 and C2 as in the end section 6. The inductances in the two sections are also shown to be equal. The capacities C1 and C2 are then incorporated into the lattice to produce the network shown in Fig. 7. The transformation ratio of the final network is shown to be equal to f<2>m/ (f1 - -f4)<2>, where f<2>m = f1f4. To produce a balanced network, the series inductance may be inserted half in each leg as shown in Fig. 1. A certain proportion of the shunt capacitance CX may be retained outside the lattice as a trimmer. The arms of the lattice may be crystals, subject to certain restrictions on. the percentage band-width of the filter.
Patent GB-1042859-A (GB)
Title: Improvements in gas filtration apparatus
IPC: B01D46/04
Filed: 1965-02-18
Abstract: 1, 042, 859. Gas filtering apparatus. FULLER CO. Feb. 18, 1965 [March 18, 1964], No. 7102/65. Heading B1T. A plurality of outward-flow bags 22, of a gas filtering apparatus, are cleaned periodically by shutting off the filtering flow, at outlet 12, opening a valve 18 causing a gentle reverse flow so that the bags collapse, and then directing charges of compressed gas upwardly from nozzles 26b, 27b, 28b whereby the bags are re-expanded, the charges being reflected down the bags again by their closed upper ends, the resulting shaking of thebags removing dust therefrom which falls into hopper 6. The nozzles are spaced along conduits 26, 27, 28 supplied through quick-acting valves (Fig. 2, not shown), operated together or in sequence, which open for periods which determine the degree of re-expansion of the bags, which is set to correlate with the setting of valve 18. Outlet 12 communicates with an induction fan 16, and valve 18 with atmosphere or with the high-pressure side of fan 16. Conduits 26-28 may have down-curving open ends (Fig. 3, not shown) to remove solids from the conduits. A number of housings 1 may operate in parallel from one dirty gas supply 11, and each is cleaned in turn or on accumulating sufficient dust. In another embodiment (Fig. 4, not shown), the bags (22<SP>1</SP>) are tubes open at both ends, dirty gas is supplied to a common inlet chamber (37) at the upper ends by a "forced-draught" fan (40), and initial collapse of the bags is induced by closing the inlet valve (42) to the housing and opening a valve (44) which connects the hopper with the lowpressure side of the fan (40). The bags are then all re-expanded together, the inlet chamber reflecting the charges back again.
Patent GB-330284-A (GB)
Title: A continuous gas drier
IPC: C10K1/02
Filed: 1929-03-05
Abstract: 330,284. Marks, Sir G. C., (Brassert & Co., H. A.). March 5, 1929. Drying gases.-Gases are dried by continuous passage through a vertical casing divided into two chambers each with a valved inlet 23 and outlet 26 so that gas may be passed simultaneously up through both chambers, or wholly through one chamber while the other is closed to revivify the dessicant. Water seals 16, 27 control the passage of gas through the chambers. Loose material 6 in the tower removes finely-entrained water from the gas and may be cleaned by water sprays 8<1>. The water is finally collected in angle bars 9, 10 serving also as baffling means for the gas and led to a sump 14 connected with water seal 16. The water seals have filling and draining pipes.
Patent GB-1447209-A (GB)
Title: Shear apparatus with blade holding means
IPC: B23D15/04
Filed: 1975-02-20
Abstract: 1447209 Flying shears AETNA-STANDARD ENG CO 20 Feb 1975 [27 Feb 1974] 7209/75 Heading B3W A flying shear has upper and lower platens, one of which is reinforcible vertically and a blade assembly mounted on each platen for horizontal movement in unison in the feed direction of strip to be sheared, each blade assembly comprising a mounting member rigidly connected to a blade holder and clamped to a supporting member, at least one of the clamping means comprising opposed faces on the supporting member and the mounting member extending transversely of the direction of movement of the assemblies and engaged by a wedge releasable to allow the mounting member, blade holder and blade to be withdrawn transversely of said direction. As shown, the upper mounting member 41 has a wedge 40 clamping it in a dovetail recess in the member 20. Clamping bolts 52 are loosened to allow longitudinal adjustment of the wedge by a screw device (30), Fig. 5 (not shown). Longitudinal movement of the member 41 is prevented by plates (50). The blade holder 82 has reinforcing ribs 83 and a holddown 60 spring loaded at 67 is mounted on the member 41 adjacent one blade 27. The lower mounting member 91 is trapezium-shaped and is flanked by wedges 90, 100 adjustably mounted similarly to the wedge 40. Reciprocating movement of the upper platen 17 is guided by posts 25 and the blade assemblies are moved with the strip to be sheared by two rack and pinion devices (24) acting between the lower platen (22) and the lower supporting member 21. An emergency stop (39), Fig. 1 (not shown), may be provided.