baber/WOPTO huggingface dataset:
Patent GB-575633-A (GB)
Title: Improvements in dynamo electric machines and regulating arrangements therefor
IPC: H02J7/16
Filed: 1944-06-14
Abstract: 575,633. Self - contained supply systems. PARTINGTON, W., and METRO - POLITAN-VICKERS ELECTRICAL CO., Ltd. June 14, 1944, No. 11392. [Class 38 (iv)] Automatic regulation; variable-speed generators, with.-An alternator driven at varying speed supplies a load including a battery through a rectifier, the excitation being made dependent on the alternator load current and volts with an opposing component varying with the battery charging current, and the component varying with the voltage also varies inversely with the frequency. In the form shown, the alternator field winding 10, opposed by winding 30 carrying the 'battery current, is fed from transformer secondary windings 14a, b, c through rectifier 45, the transformer having primary windings 16a, b, c carrying the load current and windings 15a, b, c connected to choke 44 in such manner that the current therein varies with the voltage and inversely with the frequency. Instead of the winding 30, a diverter may be connected in parallel with the rectifier and winding 10 to reduce the current'supplied to the latter as the battery current increases, and a relay may be provided to further increase the opposing excitation when the battery becomes fully charged. A single phase alternator may be used.
Patent GB-420212-A (GB)
Title: Improvements in or relating to air compressors
IPC: F04B39/10
Filed: 1934-04-16
Abstract: 420,212. Regulating compressors. MOSS, E. W., 75, Victoria Street, London.- (Ingersoll-Rand Co. ; 15, Exchange Place, Jersey City, New Jersey, U.S.A.) April 16, 1934, No. 11410. [Class 8 (i)] The inlet valve of a compressor comprises a cage L provided with ports P having spring- pressed valve plates Q. The air, &c., enters through the space K between the cylinder walls through the ports to recesses Z formed in a member W<1> on which the valve cage can slide, and so to the cylinder. The member W forms an extension secured to a cylinder S to which pressure fluid is supplied, e.g., from the receiver, the attachment being by a pair of arcuate ribs U bolted to the member on either side of a plate bolted to the annular top of the cage and pressed upwards by a spring o seated against a rib p on the member W. When the pressure in the cylinder S falls, the valve cage is lifted by the spring, allowing the air, &c., to enter and leave the cylinder freely.
Patent GB-553905-A (GB)
Title: Improvements in self-laying tracks for vehicles and other wheels
IPC: B60B15/22
Filed: 1941-09-08
Abstract: 553,905. Endless-tracks for vehicles. SINGER, O., and DEW, C.. J. Sept. 8, 1941, No. 11452. [Class 79 (i)] In a track of the kind comprising a plurality of links 2 pivoted together and enclosing at least one vehicle wheel 1 one or more chains 4, 5 or other inextensible flexible devices are passed around points or pulleys on the links in such a manner that the chain or chains will not impede the laying of the track but will pervent the links concerned from moving upwardly or downwardly away from the wheel. In the construction shown, applied to a track having six links enclosing one wheel, two chains 4, 5 are employed in triangular formations, each chain being passed over pulleys 6 on half-pulleys 6a carried by arms 7 pivoting inwardly from the track pivots 3. The chains may be free to ride around the pulleys or each may be attached to one pulley. A single chain 'may be employed to form two separate triangles. The points or pulleys 6, 6a may coincide with the link pivots 3 or they may be spaced along the links and project inwardly therefrom. Tension or compression springs may be provided in the chains to allow of a limited extension if necessitated by the movements of the track. The links may be further connected together by lazy-long linkages or other devices as described in Specification 539,106, or the wheel 1 may be centred in the track by forming the wheel and links with corresponding teeth as shown. Spuds 9 are shown in an out-of-action position and are reversed when necessary so as to engage the ground surface. The track members or links 2 may comprise framework members for emergency bridges, the wheel 1 being provided, in conjunction with the linking together of the members, solely to serve as a means of transporting the members to the site where they are to be used.
Patent GB-1402368-A (GB)
Title: Apparatus for lifting a bobbin holder from a driving drum of  a spooling device for cross-wound packages in textile machines
IPC: B65H63/036
Filed: 1973-03-09
Abstract: 1402368 Cradle lifting mechanism VYZKUMNY USTAV BAVLNARSKY 9 March 1973 [13 March 1972] 11460/73 Heading D1J An apparatus for lifting a bobbin holder 1 from a driving drum 9 of a spooling mechanism comprises a lever 14 pivoted at 12 on a stationary support 5, the arm 14 being capable of moving between an inactive position Fig. 2 and an operative one Fig. 3 in which a cam surface 19 on the arm 14 lifts the bobbin holder 1 by engaging an arcuate bearing surface 10 that is rigid with the holder 1, the radius R of the arcuate bearing surface 10 being longer than the radius r of the cam surface 19 about the pivot 12. The arm 14 is moved manually when it is desired to lift the holder 1 and in its operative setting the arm 14 is arrested by a locking mechanism 21-24. The locking mechanism includes a peg 23 that can drop into a notch 24 in the arm 14 when the arm 14 is in its operative setting. When an electromagnet 22 is energized it attracts the peg 23 to remove it from the notch 24 and so permit the holder 1 to move back towards the driving drum 9. The radii r, r 1 , and R are such that, no matter about the size of the package during its build up, the package is always spaced by the same amount from the drive roll 9 when the arm 14 moves to its operative setting.
Patent GB-731607-A (GB)
Title: Improvements in or relating to conveyor belts
IPC: B65G15/48
Filed: 1952-05-07
Abstract: 731,607. Belt fastenings. SANDVIKENS JERNVERKS AKTIEBOLAG. May 7, 1952 [March 14, 1952], No. 11550/52. Class 80 (1). [Also in Groups VIII and XXX] Two metal strips 13 are joined together to form a wide conveyer belt by overlapping their adjacent edges by a third metal strip 11 and an intermediate layer 12 of elastic material such as rubber, and covering the assembly -with rubber or other elastic material 14. The ends of the belt are secured together by a similar joint, the strip 11 and the layer 12 being cut off short of the ends to be joined and a metal strip 15 together with a layer 16 of elastic material being placed to overlap these ends, the joints then being covered with rubber.
Patent GB-1303616-A (GB)
IPC: B62D11/10
Filed: 1971-04-27
Abstract: 1303616 Vehicle skid steering A J WILDY 27 April 1971 [1 May 1970] 11605/71 Headings B7H and B7V  A vehicle having running gear, e.g. wheels, tracks, propellers or paddles R1, R2 on each side has a motor M which powers two drives D1, D2, which are fixed ratio, stepped ratio or continuously variable ratio, and two continuously variable ratio drives CV1, CV2. The outputs of D and CV each side are converted by an epicyclic gearing E1, E2 to provide separate, infinite, stepless and reversible speed variation to running gear R1, R2, and hence to steer the vehicle. A suitable transmission is shown in Fig. 5 and comprises a counter-shaft 13, driven by the motor M, which drives an epicyclic gearing in housing 7 via chain 15 and sprockets 14, 12- these constitute the fixed ratio drive D1 or D2- and via belts 19, 20, pulleys 16, 20 and expanding pulley mechanism 17-these constitute the continuously variable drive CV1 or CV2. The epicyclic gear mechanism comprises a small sun-gear 8 which is driven with pulley 16 and a large sun-gear 9 which is driven with sprocket 12. The sun-gears 8, 9 mesh with respective planet gears 3, 4, 5, 6 journalled in housing 7 which provides the final drive to the running gear via shaft 23. The drives CV1, CV2 may be hydraulic or electric motors driven by a pump or generator. A common fixed ratio drive D may be provided for both sets of running gear R1, R2. Variations of transmission and epicyclic gearing are described. For example, the continuously variable drive may be of the friction-disc type.
Patent GB-125845-A (GB)
Title: Improvements Combining Optical Illusions of Life Movements with Gramophones and like Apparatus for Study and Amusements.
Inventor: ROBSON GEORGE
IPC: G11B33/06
Filed: 1918-07-16
Abstract: 125,845. Robson, G. July 16, 1918. Games of chance.-Apparatus for enabling a game to be played comprises cards H, arranged radially and bearing numbered images of racehorses &c., mounted on a turntable or spindle such as that of a disk talking machine; a kinematographic effect is stated to be produced as the cards are rotated. The cards rotate over, or partly over, a stationary card C which has divisions bearing images numbered in accordance with the numbers on the cards H, and also a scale constituting a scoring system, a pointer K, which turns with the cards H, indicating the score after the cards H have come to rest. As shown in Figs. 1 and 2, the cards Hare carried by an adapter E on the turntable A of a talking- machine, and the card C is carried above and clear of the turntable by pillars D. In a modification, Fig. 3, in which the talking-machine has a cover Q, the cards Hare mounted on a column R projecting through an opening in the cover Q, a grooved cap V uniting them at the top; the card C rests on the cover. One or more sets of radial cards M bearing images corresponding to those on the cards H are arranged on spindles 0 and may be rotated by the impact of the cards H or by gearing from the motor of the talking machine to give a kinematographic effect. Foreground objects, such as railings &c., may be attached to the cards H, and backgrounds on cards arranged at the sides or back of the apparatus may be provided. The backgrounds may alternatively be painted on mirrors which replace the cards, and the mirrors may have plain parts in which the cards H are viewed by reflexion. The images on the cards H may also be inverted and viewed by reflection in a circular mirror beneath them.
Patent GB-1417556-A (GB)
Title: Safety cut-off valves for gas supply systems
IPC: A62C4/02
Filed: 1972-03-13
Abstract: 1417556 Valves BRYAN DONKIN CO Ltd 6 March 1973 [13 March 1972] 11636/72 Heading F2V The closure member 16 of a safety cut-off valve for a gas supply system is held open against the force of a spring (not shown) by a detent system comprising a latch 22 and a lever 19 attached to a keeper 64, which keeper is held as shown by a magnet 40 co-operating with a pair of soft iron plugs 58; and is closed by the gas pressure in chamber 37 rising or falling from set limits causing either of diaphragms 34 or 35 to move against their respective biasing springs to lift the magnet from the position shown to a second isolated keeper 62. A fall in pressure causes the smaller diaphragm 34 to rise and a rise in pressure moves the larger diaphragm 35 upwards until the attached sleeve 47 abuts a nut 51 and raises the magnet. In further embodiments, different arrangements of the springs and supporting members in the control unit are described. A "pot" magnet may be embedded in the aluminium insert 32 to hold the magnet in the position shown so that when the gas pressure exceeds the limits a decisive "trip" action results. In a further embodiment a mechanical latching system is described identical to that disclosed in Specification 1,224,805. The gas pressure need not act in a chamber between the two diaphragms but could act in separate chambers on opposite sides of the diaphragms with the space between them vented to the atmosphere.
Patent GB-564728-A (GB)
Title: Improvements in and relating to a method of and apparatus for cutting belting
IPC: D06H7/02
Filed: 1942-12-30
Abstract: 564,728. Cutting-machines for belts. STEER, G. K. Dec. 30, 1942, Nos. 11640/44 and 17113/44. Divided out of 565,475, [Group VII]. [Class 31 (i)] Damaged belting is cut longitudinally into lengths having straight edges to enable lengths to be joined together at the edges for re-use by traversing the belting past a fixed cutter while subjecting it to tension locally adjacent to the cutter so as to remove the cut edges from frictional contact with the surface of the cutter. The belting B is fed over a roller 79 and is controlled by adjustable side guides 22 adjustable by means of screws 28a. It passes under a guide 116 and is fed past the fixed cutters 112 by means of feed rollers 25, 26. The cutters are mounted in convex members 111 which act to produce the local tension, and the members 111 can be set at selective distances apart in frames 114 formed with notches 115 for receiving correspondingly shaped projections on the members 111. More than two cutting-knives may be used for slitting a belting into two or more separate lengths. The knives may be formed with an inclined face at one side so as to cause the uncut belting to veer towards its side guide.
Patent GB-566566-A (GB)
Title: Coated cellulosic sheet material
IPC: C08J7/052
Filed: 1942-08-21
Abstract: Cellulosic sheet materials are coated with a varnish comprising (1) a copolymer of a vinyl halide and a vinyl ester of a lower aliphatic monocarboxylic acid, and (2) a copolymer of a vinyl halide, a vinyl ester of a lower aliphatic monocarboxylic acid and maleic acid or its anhydride or a lower alkyl ester thereof, e.g. monomethyl, dimethyl, monomethyl or diethyl esters.  The sheet material may be paper, especially glassine, or regenerated cellulose or cellulose acetate. Suitable solvents include acetone, methyl ethyl ketone, methyl propyl ketone, methyl isobutyl ketone, cyclohexanone, butyl acetate, nitroparaffins, ethylene dichloride, mesityl oxide, and isophorone; as diluents may be used toluol, xylol and naphtha.  Plasticizers, e.g. tricresyl and triphenyl phosplates, dibutyl, diamyl and di-(butoxyethyl) phthalates, phenyl - dixenyl phosphate and castor oil may be added.  The varnish may be applied by roll coating, knifing, brushing, dipping or spraying and is baked at temperatures ranging from 280 to 400 DEG  F.  The sheet material may be printed before coating with an ink comprising natural or synthetic resins, drying oils, modifying agents, pigments and dyes.
Patent GB-309874-A (GB)
Title: Improvements in or relating to devices for improving the working of pressure gas producers
IPC: C10J3/30
Filed: 1929-04-16
Abstract: 309,874. Koller, K. April 16, 1928, [Convention date]. Producers. - In producers working under pressure, the internal retort or charging cylinder is surrounded by an insertion of less diameter than that of the combustion chamber, whereby the fuel column assumes the form of a doublystepped solid of revolution. The charging cylinder 2 is surrounded by a second cylinder 3 depending from the cover plate 1, and the gas outlet 4 is connected with the upper part of the cylinder 3. Two conical inclinations II, III are thereby formed in the fuel, and the escaping gas is comparatively free from dust. In a modification, the cylinder 3 is replaced by a projecting annulus of firebrick.
Patent GB-771065-A (GB)
Title: Improvements in or relating to processes of manufacturing thin ceramic plates
IPC: C04B33/13
Filed: 1954-04-23
Abstract: To prevent thin ceramic sheets or plates sticking together in fixing, a coating of organic glue, e.g. fish glue or dextrine, water and a dead burned powder of the same composition as the sheet is applied, dried, and burned during the fixing.  Powders specified are a mixture of barium titanate and lanthanium \sB germanium oxide, titano-zirconates, magnesia, alumina titania and ceria ceramics, stearite ceramics, ferrites and metals.ALSO:Thin ceramic plates are made by preparing a powder or powder mixture, at least 90 per cent of which is non-reactive, adding 0,5 to 5,0 per cent of rubber, relative to the powder, in a solvent of boiling point below 100 DEG C. to obtain a paste which is rolled into a thin sheet at a temperature sufficiently high to remove the major part of the solvent, shaping the sheet into plates and firing.  Powders specified are a mixture of barium titanate and lanthanum oxide \sB germanium oxide, alkaline earth titanates, titane-zirconates, magnesia, alumina, titania and ceria ceramics, steatite ceramics, ferrites and metal powders.  The non-reactive powders may be obtained by prefiring at above 900 DEG C. The solvent may be trichlorethylene or one which forms a gel with the rubber, e.g. an aromatic hydrocarbon.  The rubber may be natural, treated or synthetic.  To prevent sticking of the plates or sheet in firing a coating of organic glue, liquid e.g. water and a dead burned mixture of the same composition as the powder used in making the sheet is applied to the sheet and dried.
Patent GB-847431-A (GB)
Title: "shaped structures of amylose and a process for the manufacture thereof"
IPC: D01F9/00
Filed: 1958-04-14
Abstract: Commercially pure amylose or a starch fraction consisting for the most part of amylose is dissolved in an aqueous alkali and the resulting solution is passed through a shaping device into a bath containing acid reacting coagulating agent. Amylose shaped structures are thereby formed, and subsequently purified and dried.  The shaped structures may be plasticised before drying, e.g. by use of glycerol, sorbitol, other polyhydric alcohols or urea.  The amylose is preferably dissolved in aqueous alkali metal hydroxide solution or aqueous ammonia, e.g. a suitable spinning solution comprises a 5-25% concentration of amylose in a 2 15% aqueous solution of potassium hydroxide.  Before being spun the aqueous alkaline amylose solutions may be filtered and deaerated. The coagulation bath may contain an aqueous mineral acid, e.g. sulphuric or hydrochloric acids and additionally a salt of a mineral acid or mixture thereof. Specified salts are sodium, ammonium and magnesium sulphates.  The spinning solution and/or the coagulating bath may be heated but temperatures above 70 DEG  C are unsuitable since they cause amylose to decompose. The amylose molecules in the shaped structures may be cross linked by treatment with solutions of formaldehyde, glyoxal or an isocyanate. Additives such as liquid paraffin, casein, polyvinyl alcohol or viscose may be incorporated in the alkaline amylose spinning solution.  Specified shaped structures are filaments, webs and tubular films. Examples are given.ALSO:Filaments of amylose which have been made from commercially pure amylose or a starch fraction consisting for the most part of amylose by a wet spinning process (see Group IV(a)) may be incorporated as auxiliary filaments in woven fabrics to improve the resistance of the fabrics during weaving, the amylose filaments being subsequently removed by enzymatic decomposition using amylases.
Patent GB-630606-A (GB)
Title: Production of fluorocarbons and fluorohydrocarbons
IPC: C07C17/10
Filed: 1944-06-23
Abstract: Fluorinated hydrocarbon derivatives are obtained by reacting a hydrocarbon or halogen derivative of a hydrocarbon in the vapour phase with elemental fluorine in the presence of gold-plated copper in a form having a large surface-volume ratio, e.g. as turnings.  The reactants may be mixed with an inert diluent. Temperatures instanced are from 150 to 350 DEG  C.  The gaseous reaction products are washed with water to remove hydrogen fluoride, cooled to condense the fluorinated hydrocarbons which are washed, dried and fractionated any incompletely fluorinated products thus obtained being optionally returned for further fluorination.  In examples the reaction vessel is a vertical iron cylinder 2 1/2 feet long and 2 inches in diameter fitted with separate inlets at the top for the reactants and baffles to prevent the reactants mixing before reaching the catalyst which is electrodeposited gold on copper turnings and which fills the tube completely in (1) the vessel is cleared of air by passing nitrogen therethrough and benzene and fluorine both diluted with nitrogen led in and reached at 320 DEG  C. to give essentially dodeca-fluorobenzene and (2) heptane is similarly reacted with fluorine at 150 DEG  C. to yield fully fluorinated heptane.
Patent GB-1282821-A (GB)
Title: Electrical circuit element
Inventor: BELL ERNEST ALFRED DE
IPC: H01C10/34
Filed: 1970-03-12
Abstract: 1282821 Variable resistors ERIE TECHNOLOGICAL PRODUCTS Inc 19 April 1971 [12 March 1970] 12047/70 Heading HIS A variable resistor has a resistance track 17 and a metallic collector track 27 each having a wiping contact 25, 26 held by two resilient metal arms 23, 24 placed back-to-back and riveted at 21 to the central moulded plastics block 19. Alternatively the two arms may be replaced by a single arm and the metal collector track by another resistance track. The potentiometer may be circular or linear. Also provided are terminals 18, 19, a spindle 11 to move the wipers, and a plastics snap-on case 28. Several potentiometers may be arranged side-by-side, controlled by concentric spindles one inside the other moving on ball bearings.
Patent GB-559719-A (GB)
Title: Improvements in photographic materials
IPC: G03C1/38
Filed: 1942-08-28
Abstract: 559,719. Condensation products of carboxylic acids and cyanamides. KODAK, Ltd. Aug. 28, 1942, No. 12122. Convention date, Sept. 25, 1941. [Class 2 (iii)] [Also in Group XX] Photographic sensitive material comprises a layer of a hydrophilic colloid containing from 0.05 to 1.0 per cent. of a condensation product of an aliphatic monobasic carboxylic acid of from 8 to 17 carbon atoms with an ethylol cyanamide, or of a condensation product of an alicyclic acid with an ethylol cyanamide. Condensation products with lauric, myristic, pelargonic, lauroxyacetic, naphthenic, abietic, or hydroabietic acids may be employed. A condensation product of monoethylol cyanamide and lauric acid is prepared by heating 2 mols. of monoethylol cyanamide with 1 mol. of lauric acid on the steam bath for one hour. Similar condensation products are produced with myristic, pelargonic, lauroxyacetic, naphthenic, abietic, and hydroabietic acids.
Patent GB-1065189-A (GB)
Title: 6,6-ethylene pregnenes
IPC: C07J53/00
Filed: 1966-03-18
Abstract: The invention comprises compounds of formula <FORM:1065189/C2/1> wherein Y is a single or double bond, R1 is keto, H(OH) or H(O acyl), R2 is hydrogen or fluorine, R3 is hydrogen, methyl, methoxy, acetoxy or hydroxy and R4 is methylene or ethylidene or R3 and R4 in combination with a 16a -, 17a -isopropylidenedioxy, 16a -, 17a -oxido or 16a -, 17a -methano group, R5 is hydrogen, hydroxy or acyloxy and R6 is hydrogen, hydroxy, acyloxy or keto, the acyl and acyloxy groups having 1 to 6 carbon atoms, and their preparation by (a) when R3 is other than acetoxy, reacting a corresponding 6-methylene-pregnane with dimethylsulphoxonium methylide, formed from a trimethylsulphoxonium halide in the presence of a strong base; (b) when R3 is acetoxy, cyclizing a 6-(b -p-tosyloxyethyl-) 17a -acetoxy-pregnane by treatment with an alkali metal alkoxide; (c) 1-dehydrogenation; or (d) oxidation of a 20-ol to a 20-one. 6-Methylene pregnane starting materials are prepared by treatment of a 3-methoxy-D 3,5-pregnane with the Vilsmeier reagent to form a 6 - formyl - D 3,5 - pregnane, reducing this to form a 6 - hydroxymethyl - D 3,5 - pregnane, and subjecting this to dehydration  6 - (b  - p - Tosyloxyethyl) - 17a  - acetoxy-pregnane starting materials are prepared by reaction of a corresponding 3-methoxy-pregna-3,5-diene with b -acetoxyethyl-mercuric acetate to form a 3 - methoxy - 6 - (b - acetoxyethyl)-pregna-3,5-diene, hydrolysing this to form a 6-(b -hydroxyethyl) - pregn - 4 - en - 3 - one, and converting this to its tosylate.  The compounds of the invention have anabolic and progestational activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral or parenteral administration.