baber/WOPTO huggingface dataset:
Patent GB-499146-A (GB)
Title: Polyvinyl acetal resins
IPC: C08F8/28
Filed: 1937-07-15
Abstract: Polyvinyl acetal resins are prepared by saponifying a polyvinyl ester, under substantially anhydrous conditions, in solution in an alcoholic de-esterifying agent in the presence of a hydrogen halide until the ester becomes water-soluble but is still soluble in the de-esterifying agent, and then causing the saponified ester to react with one or more aldehydes (other than formaldehyde) or ketones or both.  The acetalization reaction also may be carried out under substantially anhydrous conditions. There are specified: alcoholic de-esterifying agents-methanol, ethanol, propanol, butanol, or mixtures thereof with each other or with 1 : 4-dioxane, benzene, methylene chloride, methyl acetate, or ethyl acetate; aldehydes-acetaldehyde, propionaldehyde, butyraldehyde, heptaldehyde, 2-ethyl butyraldehyde, 2-ethyl-hexaldehyde, furfural; ketones-acetone, methyl ethyl ketone, cyclohexanone, benzophenone, acetophenone; polyvinyl esters-acetate, propionate, butyrate, acetate-propionate. Preferably the polyvinyl ester is dissolved in the de-esterifying agent, and the catalyst added; when a test portion has become water-soluble, but before gelation, the aldehyde or ketone is added; the final resin is precipitated by water, and washed free of catalyst.  The resins may be plasticized, e.g. with tributyl, triphenyl, or tricresyl phosphates; diamyl or dibutyl phthalates; di- and tri-glyceryl esters, e.g. acetates, propionates, or butyrates; glycerol acetal esters, e.g. butyraldehyde acetal of mono-acetin, monobutyrin, or monovalerin; glycerol acetal ethers, e.g. acetaldehyde acetal of glycerol mono-ethyl or mono-dodecyl ether; and mono-chlornaphthalene.  The resins may be pressed into blocks and skived to lamin  for safety glass; made into films by coating a solution of the resin in a non-corrosive, low-boiling solvent such as acetone with or without methanol or chloroform on to a glass or metal plate or a revolving drum, evaporating, stripping, and curing by heating with warm air; moulded or extruded; used in coating compositions or photographic film bases. In examples: polyvinyl acetate is saponified until water-soluble (a) by hydrogen chloride in methanol solution, then reacted with acetaldehyde alone or with n-butyraldehyde, furfural, cyclohexanone, acetophenone, or benzophenone, with n-butyraldehyde alone or with n-heptaldehyde, acetone, methyl ethyl ketone, or acetophenone, or with 2-ethylbutyraldehyde, 2-ethylhexaldehyde, n-heptaldehyde, furfural or cyclohexanone; (b) by hydrogen chloride in solution in dioxane and methanol or ethanol, then reacted with acetaldehyde; (c) by hydrogen chloride in solution in methanol and ethanol, then reacted with n-butyraldehyde; (d) by hydrogen bromide in methanol solution, and then reacted with acetaldehyde.  Solvents specified for the product are methanol, acetone, and chloroform.  Specification 483,222 is referred to.
Patent GB-699605-A (GB)
Title: Improvements in grinding mills
Inventor: HENRICOT JACQUES FERNAND
IPC: B02C17/22
Filed: 1952-08-06
Abstract: 699,605. Ball mills. USINES HENRICOT E. Aug. 6, 1952, No. 19829/52. Class 59 The lining of a ball mill comprises a plurality of rings 5 each provided with studs 9 the heads of which are at varying distances from the axis of the mill, those heads in each ring which are furthest from the mill axis being disposed towards the feed end 2 of the mill and those heads nearest the mill axis being disposed towards the discharge end 3 of the mill. The studs of the rings diminish in height from the feed end to the discharge end of the mill and the distance between studs may be reduced gradually from the feed end to the discharge end of the mill. The studs may be of constant height provided on a frusto-conical plate, Fig. 3 (not shown), or of varying height provided on a cylindrical plate, Fig. 4 (not shown).
Patent GB-147810-A (GB)
Title: Improvements in and relating to electrical regulating systems
IPC: G05F1/335
Filed: 1920-07-09
Abstract: 147,810. British Thomson-Houston Co., (Assignees of Murphy, E. J., and Thompson, L. IV.). July 10, 1918, [Convention date]. Transformers.-A transformers 5 is provided with a magnetizing winding 13 energized by a direct or lowfrequency generator 23 and arranged so that the varying flux due to the primary winding 9 produces no electromotive force in the winding 13.
Patent GB-1189852-A (GB)
Title: Method and Apparatus for Conditioning Particulate Materials
IPC: B01F23/30
Filed: 1967-05-01
Abstract: 1,189,852. Mixing apparatus. NATIONAL ENG. CO. of CANADA Ltd. 1 May, 1967 [4 May, 1966], No. 19908/67. Heading B1C. Apparatus for mixing particulate material, e.g. for heating foundry sand, comprises a chamber 22 containing a central shaft 48 driven by an electric motor 26 and carrying lower paddles 130, 132, upper paddles (122, 128, Fig. 4, not shown), and a nozzle 40 through which hot air passes from a heater 38. The air is directed onto a series of vanes 112 which surround the axis, and each extend inwardly from the chamber wall, but are inclined to radii of the Shaft, and to horizontal. One of the upper paddles (122) traverses the inclined part 54 of the chamber wall and throws material between the vanes, so that it falls back through the jet of hot gas from the nozzle 40. The other paddles, 128, 130, 132 mix the material in the base so that the material is uniformly heated. The vanes have circumferentially directed flanges (112a, Figs. 9 and 10, not shown) at their upper ends which abut the adjacent vanes, but apertures are left so that material may pass above the vanes and fall back slowly. The chamber may be insulated by glass fibre 70. Material enters by a chute 30 and is discharged through a chute 34.
Patent GB-780226-A (GB)
Title: Improvements in and relating to the mounting of circuit breakers in distribution boards
Inventor: ATHERTON THOMAS GEOFFREY FENTO
IPC: H02B1/04
Filed: 1955-07-09
Abstract: 780,226. Switchboards; switch cases. DORMAN & SMITH, Ltd. Feb. 3, 1956 [July 9, 1955], No. 19917/55. Class 38 (5). A distribution board having a plurality of circuit-breakers 12 comprises a bus-bar 10 and a support rod 11 arranged parallel to each other within a casing (not shown). The bus-bar has a slot 13 for each breaker 12 and the rod has a hook-like projection 17 along its length, each breaker having a contact arm 14 provided with a screw 15, whereby a breaker is mounted by sliding it in an inclined position with the screw 15 slackened so that the screw moves to the end of the slot 13 with the arm 14 beneath the busbar and a clamping member 16, loose on the screw above. The breaker is then lowered to the horizontal position so that it rests on the rod 11 and slid to the right so that a projection 18 thereon is retained by the hook 17, the screw 15 then being tightened.
Patent GB-358088-A (GB)
Title: Improvements in and relating to means for concealing the discharge flash and preventing smoke discharge in guns
IPC: B23Q5/56
Filed: 1930-07-01
Abstract: 358,088. Firearms. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Soc. Italiana Miglioramento Armi; 36, Via Gaetano Filangeri, Naples, Italy.) July 1, 1930, No. 19990. [Classes 9 (i), 92 (ii), and 119.] Means for diminishing the flash and smoke accompanying discharge, which also acts to lessen the noise and to reduce the recoil, comprises apparatus for automatically injecting a cooling medium such as water into the explosion gases at or near the gun muzzle. In the form shown in Fig. 2, the injector forms part of a muzzle attachment 8 and is additional to the known means shown in Fig. 1, wherein a container 4 for the cooling medium is arranged between the projectile 1 and charge 3, the medium mixing with the gun gases as they expand into a chamber 7. The additional supply of cooling medium enters by a passage 17 between slidable rings 18, 19, the pressure of the gun gases serving to move the rings to uncover injection ports 12. In the form shown in Fig. 12, the gases are in part led rearwardly through passages 43, 44 and in part act forwardly on a piston 45 which injects the cooling medium from the chamber 17 into the path of the gun gases, mixing being assisted by deflector s 101 and baffle rings 31. Fig. 14 shows a form suitable'for rifles and machine guns in which the gun gases act through a port 61 on a piston 64 to inject the cooling medium through a spring-loaded valve 65<1> into the bore by way of a passage 66 near the muzzle.
Patent GB-1058290-A (GB)
Title: Self-aligning rolling-contact bearing
IPC: F16C19/36
Filed: 1964-05-14
Abstract: 1,058,290. Bearings. W. SCHAEFFLER, and G. SCHAEFFLER, [trading as INDUSTRIEWERK SCHAEFFLER oHG.]. May 14, 1964 [May 16, 1963], No. 20123/64. Heading F2A. A self-aligning roller bearing has an inner race (1), the Figure (not shown), an outer race comprising two parts (5) which are joined together in a plane at right angles to the axis of the bearing, and has barrel-shaped rollers (2) positioned between the races. Each part (5) has an outwardly-directed flange (6) having a series of equally spaced holes (8) therein for fixing the bearing to a structural part. The parts (5) are welded together at (7) for example and have inwardly-directed flanges (9) which carry sealing rings (10) having annular flanges (11, 12) thereon.
Patent GB-1500714-A (GB)
Title: Shock absorbers
IPC: F16F9/48
Filed: 1974-05-08
Abstract: 1500714 Hydropneumatic shock absorbers with varying spring rate OLEO INTERNATIONAL HOLDINGS Ltd 5 May 1975 [8 May 1974] 20234/74 Heading F2S In a hydropneumatic shock absorber (Figs. 1A and 1B, not shown), the gas and liquid are separated by a movable wall 24A, 24B; liquid displaced through throttling means (including the orifice in wall 14A, 14B) on compression of the shock absorber acts to displace the movable wall and compress the gas; the gas space comprises two chambers 26, 27, the gas in the chamber 26A, 26B acting at all times on the movable wall; and a spring-biased valve 56, 62 prevents communication between the gas chambers until opened automatically when the shock absorber has been compressed to a certain length. On extension the valve recloses when this length is again reached. The gas in the chamber 27 is required to be at a higher pressure than that in the chamber 26. The shock absorber is a railway vehicle buffer and comprises a plunger 10A, 10B bearing an impact head (Fig. 1) at its L.H. end, and sliding in a liquid containing cylinder (11, Fig. 1). On impact, the plunger enters the cylinder and liquid is displaced into the chamber 25A, 25B through the orifice controlled by a metering pin (16, Fig. 1) fixed to the cylinder base, and a flexible annular valve member (23). The liquid displaces the movable wall which is a floating piston 24A, 24B, and this displacement causes a pin 58, 64 on the piston (Fig. 4) or the plunger (Fig. 6) to open the valve, so that further compression of the shock absorber compresses the gas in both chambers. In Fig. 1, the chambers are separated by a movable partition (28) and a stem (32) projects from the L.H. end wall of the plunger and carries a valve head which seats on the partition.
Patent GB-700175-A (GB)
Title: Improvements in or relating to shuttering for casting concrete
IPC: E04G11/12
Filed: 1950-08-15
Abstract: 700,175. Shuttering panels for casting concrete. JOHNSTON BROS. (CONTRACTORS), Ltd., and BONE, A. B. Nov. 15, 1951 [Aug. 15, 1950], No. 20282/50. Class 20 (2) Shuttering panels 10, Fig. 1, are reinforced by tubular backing members 14, 16 welded, riveted or attached by screws or clamped thereto, so that when arranged side by side the ends of the tubes 14, 16 are in alignment and are connected together by plugs 24 which may comprise standard scaffold joint pins. The ends of the tubes 14, 16 terminate short of the peripheral flanges 11 which are cut away to accommodate the plugs 24. Alternatively the ends of the tubes may be bent to clear the flanges. The tube 16 may be formed in two parts abutting the tube 14 or the tube 16 may be cut away to leave a portion extending over the tube 14. Alternatively the tube 16, Fig. 4 (not shown), may be bent over the tube 14. One part 17, Fig. 2, of a standard scaffold clamp may be secured to the tubes 14, 16 at their junction, the other part 18 being adapted to receive a scaffold tube 23 extending across a number of panels to be supported on a scaffold structure.
Patent GB-1190735-A (GB)
Title: Improvements in or relating to Steering Means for Vessels employing Hydraulic Jet Propulsion
Inventor: ANGIER RICHARD
IPC: B63H11/11
Filed: 1966-05-07
Abstract: 1,190,735. Water-jet propulsion. U.A. ENG. Ltd. 8 May, 1967 [7 May, 1966], No. 20326/66. Heading B7V. In water-jet propulsion apparatus for a water-borne vessel, a pair of part-cylindrical deflectors 2 are attached to a duct 1 so that they are capable of pivotal movement about a common vertical axis X-X intersecting the longitudinal axis Y-Y of said duct to bring either or both of them into the path of a jet of water that issues from said duct and thereby effect either steering of the vessel while it is being propelled by said jet in a generally forward direction or propulsion of the vessel astern. When the vessel is to be propelled directly astern, both of the deflectors are placed equally in the path of the jet in abutment with each other, the jet being deflected downwardly between a plurality of arcuate vanes 15 in the lower wall of said duet and by a curved portion 11 on each deflector. In a modification, Fig. 3 (not shown), the vanes 15 are placed in the lower wall 9 of each deflector. Steering can be effected while the vessel is being propelled astern by either pivotal movement of both of the deflectors in one direction or the other, or pivotal movement of one of the deflectors away from the other.
Patent GB-680953-A (GB)
Title: Process for the manufacture of organohalogenosilanes
IPC: C07F7/12
Filed: 1950-08-16
Abstract: <PICT:0680953/IV (b)/1> Organic halosilanes are prepared by contacting at elevated temperature a contact mass of silicon, with or without an added metal, with an alkyl, aryl or alkaryl halide in a plurality of juxtapositioned reaction zones which are spaced from one another by a heat-exchange medium.  Preferably, the medium has a boiling point about the same as the reaction temperature, e.g. 280-300 DEG  C. when using methyl chloride; a suitable medium is a mixture of cresyl orthosilicate and cresol.  The products have the formula RnSiX4-n, where R is alkyl, aryl or alkaryl (e.g. methyl, ethyl, phenyl or tolyl) and X is fluorine, chlorine, bromine or iodine.  The silicon is preferably used in the form of a moulded body made from silicon and if desired a metal as catalyst, e.g. copper if R is alkyl or silver if R is aryl.  The sectioned reaction chamber may be of tubular or circular form or cabinet-like, and the sections may or may not be interconnected. They are of small dimensions in directions perpendicular to the heat-exchange surfaces to minimize temperature gradients in the reaction mixture.  When the reaction chamber is in the form of tubes, the heat-exchange medium may be inside the tubes and the reactants outside or vice versa.  In a typical case the reaction takes place in tubes 3 surrounded by a liquid bath 2.  Silicon enters at 4 and methyl chloride through nozzles 12, halosilane vapour being collected from 14.  If desired, the heat-exchange medium, which also serves to heat the reactants, may be gaseous, or alternatively it may be a continuously circulating fluid in which case it should be at a temperature higher than the reaction temperature.
Patent GB-1344845-A (GB)
Title: Nobornene derivatives and processes for preparing the same
IPC: C07C13/43
Filed: 1971-04-19
Abstract: 1344845 Norbornene derivatives SNAM PROGETTI SpA 19 April 1971 [22 Jan 1970] 20420/71 Heading C2C [Also in Division C5] Dihydric alcohol derivatives of norbornenes are prepared by reaction of a cyclopentadiene and an ester of fumaric acid or of maleic acid to give a compound of the Formula (C) which is reacted with a Grignard reagent to form the dihydric alcohol of Formula (D) In an example an alcohol of this formula wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are each hydrogen and R<SP>5</SP>, R<SP>6</SP>, R<SP>7</SP>, R<SP>8</SP> are each methyl groups is prepared by reaction of cyclopentadiene and dimethylfumarate in toluene solution followed by treatment with CH 3 MgI and hydrolysis.
Patent GB-1044601-A (GB)
Title: Improvements to selection systems for electrical lines or circuits
IPC: H04Q3/00
Filed: 1965-05-14
Abstract: 1,044,601. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORPORATION. May 14, 1965 [May 15, 1964], No. 20429/65. Heading H4K. In a system having primary and secondary switching stages EP, ES each arranged in sections such as SP1, SP2; SS1, SS2 in which direct links such as mpd1, mpd2 connect each primary section with each secondary section. each primary section includes both regular selectors CV, DV and overflow or entraide selectors ECV, EDV, the latter being connected to the regular selectors of other primary sections by links such as mpe1, mpe2. Assuming that an inlet ent1 requires to be connected to a marked outlet st, the first-choice route is over the direct link mpd1. If that is busy, the entraide link mpe1 is selected and is extended over the entraide selector EDV of the section SP2 to the entraide link mse2 if available, or else over the regular link mpd2 to the secondary stage SS1. The system is a development of that described in Electrical Communication, Vol. 38, March 1963, in a paper entitled 1000B Pentaconta Crossbar Switching System.
Patent GB-840857-A (GB)
Title: Method of producing shaped bodies of beryllium
Inventor: BARRETT TREVOR ROBERT
IPC: C22C1/04
Filed: 1957-06-28
Abstract: Shaped bodies of beryllium are formed by filling loose beryllium powder of particle size not greater than 80 microns in a mould, and sintering the powder in the mould without applying pressure thereto before or during sintering.  Preferred particle sizes of beryllium powder are specified.  The main impurities in the beryllium powder are beryllium oxide, chlorine, nitrogen, iron, silicon, magnesium, aluminium and boron.  The sintering is preferably effected in vacuo at 1150 to 1250 DEG C., the surface of the beryllium powder in the mould being covered with a layer of inert refractory powder, such as beryllium oxide, to minimize volatilization of the beryllium.
Patent GB-663327-A (GB)
Title: Welding fluxes
IPC: B23K35/36
Filed: 1949-08-05
Abstract: A pulverulent welding flux comprises 30 to 50 parts by weight of sodium carbonate monohydrate, 10 to 30 parts hydrated alkali metal pentaborate and 1 to 10 parts graphite.  It may also contain 20 to 40 parts alkali metal nitrate, 5 to 20 parts silica and 1 to 10 parts iron oxide or manganese oxide.
Patent GB-857107-A (GB)
Title: Halogenated polyalkylene oxides
IPC: C08G65/325
Filed: 1958-06-26
Abstract: Waxy to solid halgenated poly alkylene oxides having a 5% aqueous solution viscosity of 10 to 500,000 cps. are prepared by reacting a high molecular weight solid poly alkylene oxide containing certain catalyst residues with a halogenating agent, the product having an average molecular weight lower than that of the starting polymer. The catalyst residues are those of amides of calcium, strontium, barium, zinc and cadmium, hexammoniates of calcium, strontium and barium, or decomposition products of these hexammoniates which contain only the metal, nitrogen and hydrogen. Suitable polymers are polyethylene oxide, poly propylene oxide and copolymers of ethylene oxide with other alkylene oxides.  The halogenating agent may be any halogen or an alkali metal or alkaline earth metal hypochlorite.  The resin may be treated as an aqueous slurry or as a supsension in an organic liquid such as heptane, carbon tetrachloride or chloroform, or as a finely divided powder.  Halogenating gases may be diluted with inert gases.  Residual halogen may be neutralised after the reaction with ammonia or an amine.  Examples are given.
Patent GB-148542-A (GB)
Title: Receptacle for blasting cartridges
IPC: F42B39/00
Filed: 1920-07-10
Abstract: 148,542. Meffert, P. Aug. 30, 1915, [Convention date]. Stoppers, plug. - A receptacle for carrying liquidair blasting-cartridges is formed with a long neck R closed by a tubular plug c having a solid outer end provided with a slot for the passage of the electric detonator wires f. The plug c also serves to guide the cartridges into the bor holes.
Patent GB-1217113-A (GB)
Title: Methods of making stiffened or reinforced plates
IPC: B23K20/04
Filed: 1969-04-22
Abstract: 1,217,113. Jointing by rolling; making composite plates. VEREINIGTE METALLWERKE RANSHOFEN-BERNDORF A.G. 22 April, 1969 [22 April, 1968], No. 20541/69. Headings B3A and B3M. A reinforced plate is made by roll bonding metal sections 3 to metal sheets 5, the sections being supported by a member 2 of harder material during rolling. Two plates may be rolled simultaneously using a common member 2, Fig. 2, or sections may be bonded between a pair of sheets to form a sandwich plate. The member 2 is removed from the assembly after rolling. The gaps 15 in the member 2 can be shaped at their edges or provided with ejectors 16, Fig. 8, to help in removing the member from the assembly.  The sheets and sections may be of different aluminium alloys which are heated to between 450 and 500 C. The member 2 may be of steel which is preheated to 300-400 C., a stop-weld material such as graphite being used to prevent adhesion between the member and rolled plate.
Patent GB-995408-A (GB)
Title: Improvements in and relating to timber feeding apparatus for dividing band saws
IPC: B23Q3/00
Filed: 1964-05-19
Abstract: 995,408. Sawing. G. CANALI. May 19, 1964, No. 20650/64. Heading B5L. A device for feeding timber 9 to a dividing band saw 2 comprises a band 3 which is guided over sprockets or rollers and runs in the direction of feed for urging the timber into cutting engagement with one side of the saw blade, and a plurality of rollers 5 which are adjustable for inclination and acted on by pressure means 8 for urging the timber towards the other side of the saw blade. The rollers 5 are rockable about their centres and are carried by arms 4 acted upon by the pressure means such as springs or hydraulic cylinders 8 mounted in a frame 6 which may be urged towards the saw by hydraulic means 7. The rollers are driven from a common shaft through differential gearing 13, 14 which accommodates the different paths of the rollers as they move over the timber. A known device is described having a chain on one side of the saw blade and a single wide roller on the other side.
Patent GB-1033759-A (GB)
Title: Aerofoil-shaped blade
Inventor: AYERS KENNETH MICHAEL
IPC: F01D5/18
Filed: 1965-05-17
Abstract: 1,033,759. Turbine blades. ROLLS-ROYCE Ltd. May 17, 1965, No. 20833/65. Heading F1T.  A turbine blade has a main cooling air bore 11 extending from the root to the tip of the blade and communicating with further radially extending bores 14, 15 by way of slots 20 having a converging portion 26 and a portion 27 of constant width. Fins 23 in bore 14 adjacent leading edge 16 assist the cooling. Bore 15 communicates through a slot 25 with the blade external surface adjacent trailing edge 17. In a modification, Fig. 2 (not shown), slots 20 converge continuously from bore 11 to bores 14, 15 except at the radially inner and outer ends of the slots which have portions 21 of constant width. Fins 24 are also provided in bore 15.