baber/WOPTO huggingface dataset:
Patent GB-1422726-A (GB)
Title: Cyclohexane hexacarboxylic acid isomer
IPC: B01J31/00
Filed: 1973-03-14
Abstract: 1422726 Cyclohexane hexacarboxylic acid isomer BADISCHE ANILIN- & SODA-FABRIK AG 14 March 1973 [15 March 1972] 12209/73 Heading C2C The invention comprises the cyclohexane- 1,2,3,4,5,6 - hexacarboxylic acid of the formula in which X is a carboxyl group in equatorial position, Y is a carboxyl group in axial position and Z is a carboxyl group which is either in axial or in equatorial position and the mono-, di-, tri-, tetra-, penta- and hexa-alkali metal salts thereof. The invention also comprises dianhydrides of the formulµ Such compounds are obtained by dehydration of a known isomer of cyclohexane-1,2,3,4,5,6- hexacarboxylic acid at a temperature of from 80‹ to 300‹ C. to form the anhydride of either of the latter formulµ followed by hydrolysis.  Examples describe the preparation of the free hexacarboxylic acid and sodium salts and of the dianhydrides.
Patent GB-189718-A (GB)
Title: Improvements in or relating to air-cooled condensers
IPC: F28B5/00
Filed: 1922-05-01
Abstract: 189,718. Aktiebolaget Ljungstr÷ms Angturbin. Feb. 17, 1922, [Convention date]. Impellers in parallel.-In condensers for locomotives &c. in which air is forced over cooling- elements by fans, the fans are arranged on axes parallel or nearly so and at a distance less than the sum of the radii of the fans, which overlap, thus saving space. The fans 8, 9 are at two levels, sloping partitions 14 being disposed between them. In another arrangement, the fans are at the same level, being so arranged and driven that the blades of one fan pass between those of its neighbour.
Patent GB-878474-A (GB)
Title: Half tone screened image for reproducing screened images
IPC: G03F1/00
Filed: 1959-04-10
Abstract: 878,474. Copying telegraphy. FAIRCHILD CAMERA & INSTRUMENT CORPORATION. April 10, 1959 [April 22, 1958]. No. 12224/59. Class 40(3) [Also in Group XX] A screened image is made by coating a transparent film as of polyethylene terephthalate or cellulose ester with an opaque layer as of carbon black in gelatine, drying, and cutting away portions of the layer in a regular pattern of discrete separate deformations as of apex angle of 155 degrees, the deformations being representative of the shade value of an original image. The cutting may be effected with the oscillating engraving machine of Specifications 692,349 and 692,400 but with replacement of the heated stylus thereof by a cold wide-angled diamond-shaped stylus. As shown the screened image, of which Fig. 2 is a small part of the nature of a photographic negative and has smaller central indentations or dots through opaque layer 11 into transparent film 10 and larger outer dots 12, is copied photographically to produce the result of Fig. 3 where portion A represents Fig. 2, and this result may be used to make an engraved half-tone printing plate. The screened image has particularly "hard" dots of sharp change from maximum to minimum optical density. Specification 439,711 also is referred to.
Patent GB-559756-A (GB)
Title: Improvements in or relating to variable-pitch propellers
IPC: B64C11/38
Filed: 1942-08-31
Abstract: 559,756. Variable pitch propellers. DAVIES, L. LLOYD-., BISHOP, J. L. H., GODDEN, T. E., and HOLBERTON, B. V. Aug. 31, 1942, No. 12264. [Class 114] In a variable pitch propeller normally operated by a hydraulic ram within a limited range of pitch change, at each end of which the blades are automatically locked against further movement by means of a valve on the outlet from the ram cylinder, but which, on deliberate action of the operator, may be moved beyond the normal coarse pitch limit to a feathering position, or beyond the normal fine pitch limit to a reverse position, the outlet for the liquid in normal operating conditions is constituted by a valve and a seating carried by the cylinder and piston and jointly movable against a spring after closure. In the form shown, a cylinder 13 slides over a fixed piston 10, the cylinder chamber 15 being connected to oil tube 11 by a port 17, and the cylinder chamber 16 normally being connected to oil tube 12 past a valve seating 19 on the end of the tube 12. The cylinder cover 21 carries a stepped cylinder 22 containing a piston-like member 23 of spider formation with a tubular centre portion 24 and pressed to the right by a spring 31. The portion 24 has openings 27, an end face forming a valve 20 for the seating 19, and a seating 25 for a mushroom valve 26 guided by a member 29 and held on its seat by a spring 33 which is strong enough to overcome the normal pressure of the operating liquid. At'the normal fine pitch setting shown, the lock valve 20 engages the seating 19, and oil is trapped in the chamber 16. By moving the control lever of the constant-speed unit to a further position marked "reverse", and switching on an electric motor driving an auxiliary pump, oil at a higher pressure is delivered to the chamber 15. This is conveyed by the piston 10 to the chamber 16 and is sufficient to open the valve 26 so that the cylinder 15 moves further to the right to reverse the pitch, the end 35 of the cylinder 22 engaging the guide member 29 to hold the valve 26 open. In an illustrated modification the ram piston is movable within a stationary cylinder. Specification 517,696 and 543,991 are referred to.
Patent GB-1376162-A (GB)
Title: Method of manufacturing a battery plate grid
IPC: H01M4/72
Filed: 1971-04-29
Abstract: 1376162 Making battery plate grids JOSEPH LUCAS (INDUSTRIES) Ltd 14 April 1972 [29 April 1971] 12301/71 Heading B3A [Also in Division H1] A method of making a battery plate grid 11 in which the grid material is dispersion strengthened lead comprises providing a strip of dispersion strengthened lead containing fibrous or plate-like inclusions extending substantially parallel to the longitudinal axis of the strip, blanking the strip to make a preformed grid and coining the preformed grid to shape the members of the grid so that the inclusions adjacent the surface of each grid member extend substantially parallel to the surface of the member. Prior to blanking, the grid material is in the form of a plain strip which may be pre-shaped to define some at least of the members of the preformed grid. Blanking produces grid members of substantially rectangular cross-section and the members 12 are coined to a rhomboidal cross-section by tools 15, the lines 10 indicating the flow of the metal. The members 14 are similarly coined to a triangular cross-section and the sets of members 14a, 14b which are interconnected, may be displaced oppositely normal to the plane of the grid intermediate their connections. The orientation of the inclusions increases the resistance of the surface of the grid to acid attack.
Patent GB-326387-A (GB)
Title: Gear changing mechanism
IPC: B62M25/04
Filed: 1929-04-22
Abstract: 326,387. Imperial Chemical Industries, Ltd., Greenwood, J. E., and Dance, G. April 22, 1929. Controlling variable-speed gearing. - Gear changing mechanism suitable for motor cycles comprising a lever &c. 6 movable stepwise in one plane is provided with a yielding stop in some part of the mechanism which prevents the overshooting of an intermediate speed. A quadrant 3 which has notches L, M, T for low, middle, and top speeds is engaged by a spring arm 4, which moves with control lever 6. Arm 4 moves freely from notch L to notch M, but further movement is resisted by a gapped stop 2. The stop 2 may be sliding or pivoted. The pivoted stop 2 shown has a corrugated connection 8 with fixed casing 7 and a spring 9 presses the parts together. To pass notch M, additional thrust on lever 6 is necessary. On the return stroke, another arm on stop 2 is operative. By removing spring 9 and screwing down nuts, one speed can be put out of action. A form adapted for a fourspeed gear is described.
Patent GB-474400-A (GB)
Title: Discharge tubes
IPC: H03K4/86
Filed: 1936-05-01
Abstract: 474,400. Thermionic valves; valve generating circuits. RADIOAKT.-GES. D. S. LOEWE. May 1, 1936, No. 12408. Convention date, May 3, 1935. [Classes 39 (i) and 40 (v)] A gas-filled tube in a relaxation oscillation circuit comprises a thermionic cathode, a con trol grid, an anode, anc an ion-intercepting gric between the control gric and the anode, connectec to the cathode without an intermediate biass ing source. The inter cepting grid 14 may be connected, as shown, to the cathode through a circuit 17 coupled to the coil 6 in circuit with the storage condenser 5. The intercepting grid may be closed at its ends by caps so that it surrounds the control grid completely, and the end portions of the control grid may be of solid sheet or closely-wound wire. The ignition point is adjusted by removing some of the middle turns of both grids. Dimensions of a typical tube are given.
Patent GB-724598-A (GB)
Title: A weighted line for use on fishing nets or other purposes
IPC: A01K75/06
Filed: 1953-05-05
Abstract: 724,598. Ropes &c. ALSTON, K. Dec. 3, 1953 [May 5, 1953], No. 12425/53. Class 109. [Also in Groups VI, XIV and XV] A weighted line for fishing nets or for weighting down tennis nets or curtains comprises a flexible core a, e.g., of glass or natural or synthetic plastic, lead masses b isolated or interconnected by thin flexible lead parts, applied to the core by an extension process and a flexible non-metallic water-resistant material such as rubber occupying the spaces c between the lead masses and preferably forming a flexible sheath d enclosing the masses.
Patent GB-200628-A (GB)
Title: Improvements in sheet metal compression members for aircraft
IPC: B64C3/18
Filed: 1922-05-03
Abstract: 200,628. Owen, A. E., and Coupland, E. May 3, 1922. Struts, tie-rods, and strut and tie-rod connections.-A built-up steamline compression member, such as is used in aeroplane construction, comprises a nose portion 1, Fig. 5, which takes the main part of the load and is formed from a strip of sheet metal the edges 2, 3, of which are bent inwardly and fixed together to form a web, and a streamline fairing portion 9 also formed of a bent metal strip and connected to the rear of the nose portion 1 at its forward edges 11. The web is pierced with perforations 4, Fig. 3, and the overlapping portions 5 are secured together by rivets. According to a modification, the ends 2, 3 are formed with abutting flanges which are riveted together. The fairing is conveniently formed in a main length 9 to which are riveted two tapering end portions 8, Fig. 4. The edges of the fairing are flanged and formed at intervals with tongues 12, Fig. 5, which overlap the rear edges of the nose 1, to which they are connected by rivets which extend through the strut to tongues on the opposite side, the rivet passing through a distancing tube 13, Fig. 7, or having flanges which bear against the interior walls of the nose 1. The fairing may be connected to the nose portion by short straps 14, Figs. 4 and 5, riveted to both parts, or the two parts may be soldered together. According to another modification, the fairing is formed at intervals with tongues 20, Fig. 9, which are bent over to form a slot. These tongues are passed through the perforations in the web and the fairing is expanded to cause the slotted tongues 20 to lock over the flanges of the nose portion 1, after which the joint is soldered. An end fitting for use with the strut comprises a boss 15, Figs. 3 and 4, threaded on a spindle 17 passing through the rearwardly extending leaves of the nose-piece 1. The boss 15 is formed with pins 16 which extend fore and aft at right-angles to the spindle 17 and upon which are threaded members 19 adapted to take the stress.
Patent GB-848629-A (GB)
Title: Improvements in disc filters
Inventor: DOGUE LELAND HAMILTON
IPC: B01D33/21
Filed: 1959-04-13
Abstract: 848,629. Agitating devices. DENVER EQUIPMENT CO. April 13, 1959, No. 12442/59. Class 86 [Also in Group I] Agitating devices for a rotary multiple leaf filter (see Group I) may. take one of three main forms. In Fig. 6, circular plates 45 are secured to a rod 38 which extends through flexible diaphragms 46 secured in the end walls of the filter tank, the rod being linked to an eccentric 28 driven fromthe filter-leaf driving gear. - The plates 45 may be whole, perforated or slotted; they may be non-circular and inclined in pairs; they may be cup-shaped. In Fig. 16, intermediate levers 62 each carrying two plates 60 at its lower end are rocked about pivots 64 by a rod 68 connected to an eccentric 70. End levers 62 each have one plate. In Fig. 18, rods 74 are reciprocated vertically through bearings 75 by eccentrics on a rotating shaft 77 and carry plates 73.
Patent GB-310961-A (GB)
Title: Improved method of and apparatus for manufacturing pottery ware
IPC: B28B13/02
Filed: 1929-04-22
Abstract: 310,961. Miller, W. J. May 5, 1928, [Convention date]. Extrusion machines; flower-pot machines ; heating apparatus.-Consists in periodically moving a mould into co-operative relation with an upper die, applying a charge of clay under pressure to the surface of the mould, and applying air or other fluid under pressure through the walls of the die-with or without the application of subatmospheric pressure to the mould-to ensure adhesion of the clay to the mould and its release from the die when the parts are separated. As shown, moulds A, supported by members B on a chain conveyer, are raised to co-operate with an upper die 129 and are charged with material by a plunger P working in a chamber 73 extending from an extrusion chamber. The plunger P is carried by a hollow rod 118 having a fluid connection 128 and reciprocated bv a cam 114 and lever 115. The die 129 is lined with plaster and is furnished with a fluid connection 133. The mould is supported by a. telescopic hollow stem 10, 11, also having a fluid connection controlled by a valve 66, which stem is reciprocated by a cam 52 and lever 53. Rotation may be imparted to the mould through friction gearing 14, 13 controlled by a camoperated brake 54. The mould may be associated with a magnetic chuck and the upper die may be furnished with an electrical heating device, the appropriate connections being made by rings on the stem 11 and contacts 176. Fig. 4 shows the extrusion chamber 72 furnished with a feed screw 75 driven intermittently through ratchet gear and fitted with a relief valve 96. A threaded portion 79 on the spindle 77 prevents access of material to the bearing 78 and is associated with a scraper 80<a>. Various forms of mould are described; also adjusting means for the levers 53, 115 and cams 52, 114. The charged moulds pass, in turn, to a profile 185 associated with a trimmer 193 and sponge 200. Specifications 283,151; 283,894, [Class 87 (i), Bricks &c.] : 284,696, 293,023, 308,836 and 309,491 are referred to.
Patent GB-1160868-A (GB)
Title: Steering Column Assemblies
Inventor: BRITTEN PETER GEORGE JEFFRIES
IPC: B62D1/19
Filed: 1967-03-17
Abstract: 1,160,868. Collapsible steering shafts. FORD MOTOR CO. Ltd. 17 March, 1967, No. 12510/67. Heading B7H. A steering column incorporates a shaft 1 having portions comprised by corrugated tubes 2 and 4, upon the upper one of which, 2, the steering wheel 3 is mounted. The tubes may be perforated. Between the tubes the column comprises a casing connected to a bracket 5 having arms 5a and 5b which, when a force is applied at the steering wheel causing the column to collapse. will deform and guide the column along a predetermined path. The lower casing and steering shaft are supported in a bulkhead 7 by a bearing 9 and a collapsible coupling 8 is arranged between the steering shaft and gear to absorb impact forces applied at the steering gear.
Patent GB-437284-A (GB)
Title: Improvements in or relating to the polymerisation of methyl methacrylate
IPC: C08F20/14
Filed: 1934-04-26
Abstract: Methyl methacrylate is polymerized in solution in a mixture of water and a water-miscible organic solvent, the amount of water being substantially such that addition of further water would precipitate monomeric methyl methacrylate at the temperature of polymerization. Suitable solvents are: water-soluble monohydric aliphatic alcohols, e.g. methanol, ethanol and propanol; low-boiling derivatives of polyhydric alcohols, e.g. alkyl ethers of ethylene and diethylene glycol; water-soluble ketones, e.g. acetone and methyl-ethyl ketone; and water-soluble organic acids, e.g. formic, acetic and propionic acids.  The amount of monomer should preferably not exceed 20 per cent by volume of the total reaction mixture.  The polymerization may be effected by the action of heat, light (especially ultra-violet light) or polymerization catalysts, e.g. benzoyl peroxide, or combinations of these means.  The process is advantageously carried out in a continuous manner by continuously withdrawing at least partially polymerized reaction mixture from the polymerization zone, separating solid polymer therefrom and returning the separated water-solvent mixture together with fresh methyl methacrylate.  In examples: (1) Methyl methacrylate is introduced through one inlet and a suitable mixture of methanol and water through another inlet into a steam-jacketed kettle provided with a stirrer.  The mixture is heated to 65 DEG  C. and samples are taken to determine when separation of polymer begins, upon which fresh monomer is introduced so as to preserve the correct composition of the reaction mixture.  When substantial polymerization has occurred the product is withdrawn through an outlet in the bottom of the kettle to a centrifuge or filter, the solid polymer is separated, washed and dried, and the filtrate pumped back into the kettle together with the requisite amounts of fresh monomer, methanol and water.  (2) A mixture of methanol, water and methyl methacrylate is heated to 65 DEG  C. in a closed vessel.
Patent GB-202003-A (GB)
Title: Improvements in or relating to vacuum brake apparatus for railway and like vehicles
IPC: B60T13/46
Filed: 1922-05-04
Abstract: 202,003. Luard, E. S. May 4, 1922. Fluid-pressure.-A vacuum-brake release valve is manufactured by forming in an appropriatelyshaped solid metal blank, or casting, all the necessary passages and ports, and the valve chamber by drilling or like cutting operations. In the valve casing shown in Fig. 1, the brake application passage 1 and the reservoir passage 2 are drilled from the top, and the train pipe spigot passage 4 is drilled from its open end so as to break into the brake application passage 1. The connecting-passage 11, upon the end of which the hand-release valve 12 seats, is drilled through the dividing-wall, and one end of it may be drilled to a larger diameter to take a gun-metal valve seat 13. The valve 12 is normally seated by a spring. and the valve stem 14 passes through a bushing 15 in the outer wall of the housing. This bushing may be a pressed-in fit, or may be screwed in and packed with a gasket 18 as shown. A short drilled passage 8 provides a seat for the non- return ball valve 9, either directly or by a screwedin or pressed-in seating 10. The lower part 2a of the reservoir passage 2 is formed by a horizontal drilling, the outer end 7 of which is closed by a screw plug the end of which is machined off. Fig. 3 shows a modification, in which the trainpipe spigot passage 4 is in a plane parallel to the plane of the passages 1, 2, the drilling of the connecting-passage 4a being effected through the opening 5, which is afterwards closed by a cap and washer.
Patent GB-494767-A (GB)
Title: Aromatic polyether chlorides
Filed: 1937-05-04
Abstract: Ethers of the formula ROCH2CH2OCH2CH2 OCH2CH2X, where R is an aromatic radicle of the benzene or naphthalene series and X is chlorine, are prepared by reacting a monohydric phenol or naphthol with at least an equimolecular proportion of b -chloro-b 1-(b 11-chloroethoxy)diethyl ether in the presence of an oxide or hydroxide of a metal of the first or second periodic group, e.g. of sodium, potassium, calcium, magnesium or zinc.  The proportion of metal compound should be about equimolecular with that of the phenol or naphthol.  The reaction may be effected at a raised temperature in the presence or absence of water and/or an inert organic solvent. Examples are given of the reaction of b  - chloro - b 1 - (b 11 - chloroethoxy)diethyl ether with p-(a , a , g , g -tetramethylbutyl)-phenol, p-phenylphenol, b -naphthol, and p-cyclohexylphenol.  Products obtained from b  - chloro - b 1 - (b 11 - chloroethoxy)diethyl ether and phenol, p-tert.-butylphenol, p-tert.-amylphenol, p-nitrophenol, o- and p-benzyl-phenol, o-chlorophenol, o-methoxyphenol, thymol, p-cresol, 2 : 4-dichlorophenol, and p-benzoylphenol are also described.  Other specified phenols or naphthols are o- and m-cresol, carvacrol, 1 : 3 : 5-xylenol, any of the straight- or branched-chain butyl-, amyl-, hexyl-, heptyl-, octyl-, decyl-, dodecyl- or hexadecyl-phenols, the corresponding cresols or xylenols, o- or m-phenylphenol, benzyl-, cyclohexyl- and chloro-phenols generally, chloro cresols, o- or m-benzoylphenol, nitrophenols generally, and the correspondingly substituted a - or b -naphthols.  The products yield water-soluble sulphonates by reaction with sodium sulphite, amine salts by reaction with ammonia or primary, secondary or tertiary amines, thiocyanates having insecticidal properties by reaction with sodium thiocyanate, and mercaptans by reaction with sodium hydrosulphide.  Specifications 494,766 and 494,769 are referred to.
Patent GB-826027-A (GB)
Title: Improvements in or relating to flame-resistant fiberboard
IPC: E04B1/94
Filed: 1956-04-26
Abstract: A paint for coating boric-acid-treated fibreboard in the manufacture of flameproof fibreboard (see Group VIII) comprises the following substances in parts by weight: clay 1000, trisodium pyrophosphate 3, ammonia 6, casein 75, pine oil 10 and water 1264. The whole or part of the clay may be replaced by calcium carbonate, whiting, lithopone or titanium dioxide, and the casein may be replaced by chlorinated paraffin or antimony trioxide.  The paint may be applied by spray guns.ALSO:A size for impregnating fibreboard in the manufacture of flameproof fibreboard (see Group VIII) comprises the following substances in parts by weight: boric acid 8,0, sodium alginate 9,25, water 91,75.  The sodium alginate may be replaced by carboxymethyl cellulose, starch or bentonite.  A plastic composition for coating the boric-acid-treated fibreboard comprises the following substances in parts by weight: clay 1000, trisodium pyrophosphate 3, ammonia 6, casein 75, pine oil 10 and water 1264.  The whole or part of the clay may be replaced by calcium carbonate, whiting, lithopone or titanium dioxide, and the casein may be replaced by antimony trioxide chlorinated paraffin or polyvinyl acetate.
Patent GB-772566-A (GB)
Title: Improvements in or relating to steam boilers having a single stage reheater or multiple stage reheaters convectively heated by flue gas
IPC: F22G5/04
Filed: 1955-05-03
Abstract: 772,566. Forced-flow and critical pressure steam boilers; superheaters. SIEMENSSCHUCKERTWERKE AKT.-GES. May 3, 1955 [May 3, 1954], No. 12848/55. Classes 123(2) and 123(3) A forced-flow, once through boiler operating at a pressure which may exceed the critical pressure has two parallel-connected tube systems comprising preheaters 3, 4 from which water flows to radiantly-heated evaporating and superheating sections 19, 20, steam from'these sections passing via coils 18, 17 respectively housed in reheat steam inlet headers 16, 15 to convection superheaters 7, 8. Steam from each superheater 7, 8 'enters a common collector 9 from which it passes to the turbine served by the unit through a pipe 10. Steam from the high pressure and the intermediate pressure stages of the turbine is returned to the headers 15, 16 respectively wherein it is partly reheated in indirect contact with the steam from the sections 19, 20, the reheating being completed in convection reheaters 13, 14. Reheat temperature for both stages is controlled by proportioning the gas flow through the reheaters by dampers 11, 12. The cooling of the steam from sections 19, 20 in the heat exchangers prevents overheating of the superheaters 7, 8. At the same time the preheating of the reheat steam allows high reheat temperature to be obtained using convection reheaters.