baber/WOPTO huggingface dataset:
Patent GB-292465-A (GB)
Title: Asynchronous electric cascade generator
IPC: H02K17/42
Filed: 1928-06-05
Abstract: 292,465. Forces et Ateliers de Constructions Electriques de Jeumont. June 18, 1927, [Convention date]. Alternating-current induction machines.-An asynchronous induction machine driven at variable supersynchronous speed to act as an asynchronous generator is controlled for speed and power factor variation by being cascaded with a double or two-part commutator frequency changer, the resultant voltage of which is applied to the rotor of the induction machine. The control is effected by moving the two sets of brushes of the commutator machines. Fig. 7 shows an arrangement in which the rotor of the asynchronous generator A has six slip-rings D connected to diametrically opposed pairs of brushes M<1>, M<2> in series on the commutators of two frequency converters C<1>, C<2> fed from the secondary windings of a transformer T on the line. An inductance L may be used for maintaining the required torque-characteristic up to the highest speed cf the machine A. The Specification 'describes the voltage relationships which must be satisfied by the movement of the brushes on the commutators of the frequency changers. The known method of regulating an asynchronous motor by means of a cascaded 3- phase commutator machine fed from the line through a variable-tap transformer on its slipring side is described in the Specification together with the known use of a frequency changer C, Fig. 2, having three pairs of diametral commutator brushes M connected to six rings on the induction motor A under regulation. The machine C is fed from a line transformer T through six slip-rings B, regulation being effected by altering the angle t<1>1ot<1>2 subtended by the brushes M. Another known method is referred to in which the frequency changer is divided into two separate 3-phase machines as shown in Figs. 3 and 3<a>. In this arrangement. the induction motor A has six slip-rings connected to pairs of brushes on two frequency converters C', C<2> both capable of carrying half the current and developing the same diametral voltage ot<1>, ot<2>. Regulation is effected by shifting the brushes upon the commutators so as to give a voltage depending upon the size of the chord t<1>1 t<1>2.
Patent GB-1097216-A (GB)
Title: Improvements in means for twisting and drafting sliver
IPC: D01H1/00
Filed: 1965-04-15
Abstract: 1,097,216. Drafting and twisting slivers. DEUTSCHER SPINNEREIMASCHINENBAU INGOLSTADT NIEDERLASSUNG DER SCHUBERT & SALZER MASCHINENFABRIK A.G. April 15, 1965 [April 15, 1964], No. 16389/65. Headings DID and D1F. Apparatus for drafting and twisting sliver comprises first and second twisting-means with means to prevent the sliver rotating as it passes from the one to the other; the first twisting- means comprises drafting means rotated bodily and a pair of nip rollers to hold the sliver after it leaves the drafting-means, and the second twisting means is such as to increase the degree of twist imparted by the first means. Sliver is drawn out of a can 1, the cover 62 of which carries a frame 6 carrying drafting rollers. The cover and frame are rotated together through a pinion 61 and the rollers are rotated about their axes by worm-gearing 42, 43 driven from a pinion 41 which meshes a fixed pinion 51 as the frame rotates. Above the drafting rollers is a pair of rollers 7 which only rotate about their axes. From the first twisting device so constituted the sliver passes along a path 2 to a second twisting-device comprising a pair of rollers 8 rotating only about their own axes, and a pair of rollers 9 which rotate about an axis 2". These are carried by a housing 13 driven by a pinion 14. The rollers are rotated about their own axes by a pinion 93 driven by the rotation of the housing, the latter also causing a disc 11 with an inclined channel 111 through which the sliver is delivered for collection cycloidally in a can 12. In modifications, (a) already-twisted can be used as the starting- material in can 1 which is, in this case, held stationary so that the sliver is untwisted before drafting; (b) several slivers can be twisted together; these may lie loosely inside can 1 or lie in a number of smaller cans inside rotating can 1 or on a rotating housing, or in separately rotating cans; (c) a number of slivers receiving their first twist in separate first-twist apparatus, can be twisted together in a common second-twist apparatus; (c) the rollers 9 of the second-twist means can be replaced by a twisttube; and (d) the twice-twisted sliver can be collected on a bobbin instead of in the can 12.
Patent GB-882293-A (GB)
Title: Improvements in or relating to tubular scaffold elements for use in building and like construction
IPC: E04G7/30
Filed: 1959-05-14
Abstract: 882,293. Scaffold clamps. BURTON, J. May 10, 1960 [May 14, 1959], No. 16504/59. Class 44. A scaffold unit comprises a cross-member 10 having permanently fixed to each end two clamps as at 12, 17 to receive uprights 16 and ledges 18 respectively. The clamps comprise pivoted jaws 13, 20 secured by bolts 15, 21. These are gusset plates 22 having distance pieces 25 which engage the sides of the uprights. In a modification, Figs. 3 and 4 (not shown) the clamps 17 are reversed on the cross-member so that the ledges come inside the uprights. The gusset plate may be welded to one side of the cross-member and extend downward at a small angle to the vertical to engage the upright with its lower inclined edge without the use of a separate distance piece, see Fig. 4 (not shown).
Patent GB-1399849-A (GB)
Title: Metal end closure member
IPC: B65D51/24
Filed: 1973-04-06
Abstract: 1399849 Can ends CEBAL 6 April 1973 [21 Dec 1972] 16530/73 Heading B8D In a metal can end having a seaming flange 3 connected by a peripheral channel portion to a flat central portion 2, which is provided with a score-defined removable panel, the channel portion comprises in radial section an arcuate portion 4 having a radius of curvature of 0À5 to 1À2 mm. connected to the central portion by rectilinear and curved portions ab, be and cd and to the flange by straight portions 10 and 12, the angle X between portion 10 and a can end perpendicular being at the most 20 degrees and the angle between portions 10 and ab being in the range of 6 to 34 degrees. The construction is said to withstand pressures of 7 kg./cm.<SP>2</SP> for a can end of thickness less than that of conventional can ends, dimensional examples being given. Curved portions be and cd are of different curvature. The can end may be of aluminium/ magnesium alloy, aluminium/magnesium/manganese alloy, steel, stainless steel, or iron.
Patent GB-690277-A (GB)
Title: Improvements relating to filling conduits for incorporation in hot water bottles or bags
IPC: B67C11/02
Filed: 1948-06-21
Abstract: 690,277. Hot-water bottles. AITKEN, R. May 23, 1949 [June 21, 1948], No. 16585/48. Class 64 (ii) [Also in Group XVII] A filling neck or conduit, for incorporation in a hot water bottle, has an inner tubular member 11, Fig. 4, defining the filling opening and having screw threads 13, connected in spaced relationship to an outer tubular member 12, the space between the members allowing the escape of air and steam when filling the bottle. The screw threads 13 and an annular seat 16 at the top of the outer wall permit sealing of the filling opening and of the space between the walls by a single closure plug 20, Figs. 4, 5. A rubber washer 23 is included and is surrounded by a peripheral flange 17 when the plug is in place. Connecting elements divide the space between the walls into downwardly-divergent arcuate slots 15. To facilitate fixture of the conduit in a resilient bottle, shown in part in chain-dotted lines in Fig. 6, a groove 18 is provided. In the example shown in Fig. 6, the outer wall projects above the inner wall and air escape openings 30 are angled inwardly and downwardly to the inner face 25 of the conduit which forms a conical seat for a modified plug. In other examples, Figs. 7, 8 (not shown), the top of the inner wall, instead of being level with the annular seat 16, is above or below this seat.
Patent GB-736690-A (GB)
Title: Improved mounting for high speed grinder spindles
IPC: B24B41/04
Filed: 1952-07-01
Abstract: 736,690. Friction gearing. GAUB, H. July 1, 1952 [July 2, 1951], No. 16591/52. Class 80 (1). [Also in Group XXXIV] A grinder spindle a is mounted in two sets of rigidly journalled rollers b, c of greater diameter than the spindle a. The top rollers are mounted in an eccentric sleeve f whereby they may be adjusted radially with respect to the spindle a. The top roller c is in two parts and engages a flange a<SP>1</SP> on the shaft a, thus taking any axial thrust. The rollers are mounted on three spindles d\ d<SP>2</SP>, d<SP>3</SP> each having a driving pulley secured to the end thereof and being driven by a common belt or separate belts.
Patent GB-422468-A (GB)
Title: Improvements in and relating to wireless signalling
IPC: H04B7/005
Filed: 1933-06-09
Abstract: 422,468. Wireless signalling. BELL, L. H. BAINBRIDGE-, and NAISMITH, R., Radio Research Station, Slough, Buckinghamshire. June 9, 1933, Nos. 16599/33 and 15967 /34. Drawings to Specification. [Class 40 (v)] The effects of fading are limited by causing a transmitter to send out at intervals, pulses of energy, the duration of the pulses and the duration of the intervals being determined by the lengths of the several paths over which the energy travels to the receiver, and by combining at the receiver the energy received over the several paths. The receiver has its alternating current circuits arranged to recover from one echo before the next arrives and the output after rectification is applied to a condensershunted resistance which circuit is of sufficiently long time-constant to integrate the ground-ray signal and all the echoes from a particular pulse or a plurality of pulses and their echoes to provide a single element constituting the smallest unit of the signalling system used. An interrupter may be added to the receiver whose rate of operation corresponds to the rate of reception of the echoes and connects the integrating circuit only during the reception of each pulse and its echoes.
Patent GB-533147-A (GB)
Title: Improvements in or relating to radio and like relaying or repeating systems
IPC: H04B7/165
Filed: 1939-06-06
Abstract: 533,147. Wireless signalling ; automatic control. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 6, 1939, No. 16633. Convention date, July 1, 1938. [Class 40 (v)] [Also in Groups XXXV and XXXVI] A repeater for radio and like frequency modulated waves comprises an oscillating amplifier which is synchronised, as regards both frequency and phase, with the incoming signals. Signals from the antenna or transmission line 10 are impressed upon the amplifier 16 the output of which is applied to the oscillating amplifier 18 which is synchronised by the signals. The output from 14 is applied through a balancing arrangement to an antenna or line. If the natural frequencies of amplifier 18 and the input signals vary greatly and prevent synchronisation, automatic means are operative to correct the tuning of amplifier 18. Valves 20, 22, also operate as phase rotation detectors, their output circuits 26, 28, being tuned above and below the natural frequency of operation of amplifier 18 by amounts which result in voltages phase displaced by approximately 90 degrees being fed back from circuit 34 to their anodes. The valves. 20, 22, thus produce a two phase beat frequency, the direction of rotation of which depends upon whether the amplifier 18 is oscillating out of synchro-. nism above or below the received frequency. The two phase energy is supplied through transformers 38, 40, and amplifies 44, 46, to the windings 42 of a two phase motor relay. When the frequency of amplifier 18 is incorrect either contact 48 or 50 is closed to energise the reversible motor 52 to adjust the condenser 56 in a direction to correct the frequency error. Finer adjustment of the tuning is obtained by energising the motor by means of a relay RR which responds to any unbalance in the currents flowing in valves 20, 22. The frequency modulation is detected by valves 20, 22, but the relay is suitably damped to prevent it responding to the modulation. In a modification, Fig. 2 (not shown), the detected signals from the valves 20, 22 are amplified and applied to the grids of two valves which have their plate circuits tuned respectively above and below the working frequency, and coupled loosely to the output circuit of the amplifier 18. Frequency modulation is thus re-applied to the amplifier. In a further modification, the coupling between the circuits 26, 28 and the circuit 34 is omitted.
Patent GB-347927-A (GB)
Title: Improvements in devices for actuating closure devices of commercial plants
IPC: F23L15/02
Filed: 1930-05-29
Abstract: 347,927. Hot blast stoves ; fluidactuated valves. ZIMMERMANN & JANSEN, GES., Duren, Rhineland, Germany. May 29, 1930, No. 16656. Convention date, Dec. 16, 1929. [Classes 51 (i) and 51 (ii).] In actuating means for valves such as those of hot-blast stoves and like plants adapted to be actuated in succession by fluid pressure acting on pistons If .. 7f which also control the flow of the pressure medium to the succeeding actuating cylinders, piston valves 2b .. 7b are provided between the various actuating cylinders le .. 7e and are operated by the pressure medium itself to control the flow of the pressure medium to and from the actuating cylinders. Compressed air passes through a four-way cock C and a pipe 1d to the first controlling cylinder 1a, forces the piston valve 1b upwardly opening communication with the left-hand end of the first actuating cylinder 1e through a pipe 2d, and forces the piston 1f to the right closing the valve 1. The space to the right of the piston 1f is put into connection with the atmosphere through a pipe 15g. When the valve 1 is fully closed a pipe 3d becomes uncovered and the air passes to the controlling. cylinder 2a. The valves 1 .. 7 are thus actuated in succession the pipes 4d .. 15d being arranged so that the valves 2, 3 are closed and the valves 5 .. 7 opened. On reversal of the cock C the compressed air passes by a pipe 1g to the controlling cylinder 7a and the valves are actuated in reversed order, the pipes shown in broken lines becoming operative. The pipe 7d from the third actuating cylinder 3e is connected with the succeeding controlling cylinder 4a through a separate valve or through additional passages in the cock C so that by turning the cock into the position shown in Fig. 3 the operation may be stopped when the valve 3 is closed.
Patent GB-1109123-A (GB)
Title: Deposition of crystalline semiconductive layer on insulating substrate
IPC: C23C16/00
Filed: 1965-04-21
Abstract: Silicon is deposited on a sapphire substrate by flowing silane over the sapphire whilst it is heated to 1000 to 1150 DEG C.  The surface of the sapphire may be cleaned by heating to 1250 DEG C. in hydrogen. The silane may be mixed with hydrogen.  Boron or phosphorus may be deposited simultaneously using a diborane hydrogen mixture or phosphine hydrogen mixture respectively.  The reaction takes place in a quartz tube heated by an R. F. coil.
Patent GB-554412-A (GB)
Title: Improvements in the production of cellulose esters
IPC: C08B3/22
Filed: 1941-12-30
Abstract: 554,412. Cellulose esters. JONES, J. E. Dec. 30, 1941, No. 16765. [Class 2 (ii)] A cellulose primary organic ester is subjected to a ripening treatment while it is in solution in an acidic medium comprising water and an aromatic hydroxy compound which is a solvent for the primary ester. The cellulose ester may be obtained by treatment of cellulose with an organic acid anhydride in a liquid medium which is a solvent for the primary ester, and the ripening treatment may be carried out after the addition of water and an aromatic hydroxy compound. The process may be employed in the production of cellulose acetate, propionate, butyrate, and other organic esters of cellulose using sulphuric acid as catalyst e.g. 10-20 per cent. based on the weight of the cellulose. It may also be used in processes using smaller amounts of sulphuric acid e.g. 1-5 per cent. and in processes using mild catalysts such as zinc chloride, hydrochloric acid, ferric chloride, or stannic chloride. It may be used in processes for producing high viscosity cellulose acetate using acetic acid in an amount equal to at least six times the weight of the cellulose. The amount of phenolic substance e.g. phenol or a cresol, added may be 20-40 per cent. of the solution. The amount of water added may be 20-60 per cent. or more of the weight of cellulose. It should be sufficient to destroy the excess of anhydride and to enable ripening to take place. Additional amounts of catalyst may be added for the ripening step which is continued until a product of the desired solubility properties has been obtained. Cellulose esters which have been produced by esterification in suspension may be subjected to the ripening treatment in presence of a phenolic compound after dissolving them in a suitable solvent. In an example, cellulose (cotton linters) is pretreated with a mixture of acetic acid, acetic anhydride and a small amount of sulphuric acid. A mixture of acetic acid, acetic anhydride, and sulphuric acid is then added and the mass is kept at 50‹C. until the cellulose has dissolved and the reaction is complete. Molten phenol is added and then sufficient water containing sulphuric acid is added to destroy the excess of anhydride and give a mixture containing 40 per cent. of water and 10 per cent. of sulphuric acid based on the weight of cellulose. Ripening is carried out till the product is soluble in acetone. Specification 207,562, [Class 2 (ii)], is referred to.
Patent GB-1270301-A (GB)
Title: Improvements in and relating to spool winding arrangements
IPC: G03B21/43
Filed: 1969-04-01
Abstract: 1,270,301. Tape reel. RICOH K.K. 1 April, 1969 [19 April, 1968], No. 16877/69. Heading B8M. [Also in Divisions G2 and G5] A magazine for a web, e.g. magnetic tape or cine film, contains a control member 14 to engage and be moved by a notch 2a in a spool to indicate that the spool is empty and/or halt or reverse drive. As shown two control members 14, 15 co-operate with respective spools to drive a plate 12 out through the magazine when either spool is empty. In single spool magazines the control member (5, Fig. 1, not shown) is pivoted and slidable on a peg (4) or may simply be pivoted (Fig. 2, not shown).
Patent GB-239821-A (GB)
Title: Improvements in and relating to self clinching anchor nails
IPC: F16B15/06
Filed: 1925-07-01
Abstract: 239,821. Goodman, J. F., and Rolison, C. G. July 1, 1925. Nails.-Relates to self-clinching anchor nails of the type comprising a nail having a bifurcated shank which is driven into a tubular socket and in which means are provided in the socket for spreading the two shank members outwardly into the material into which the socket is driven. According to the invention, tongues 30 formed integrally with the socket 10 are brought together to form an anvil for spreading the shank members 20, 21. The tongues may be dished and an additional tongue may be provided to support the tongues forming the anvil. The socket may be circular in section or may have flattened sides as shown in Fig. 3 in which case one of the corner channels forms a guiding groove for a shank member of the nail. The socket may be formed by folding a sheet-metal blank and the meeting edges thereof may be notched for interengagement. The ends of the bifurcated shank are normally bent apart as shown in Fig. 2, and the socket member may be barbed.
Patent GB-600917-A (GB)
Title: Emulsion polymerization
IPC: C09D11/10
Filed: 1944-09-05
Abstract: A process comprises polymerizing to substantially insoluble form a homogenous mixture including at least one material containing a single ethylenic linkage and an unsaturated alkyd resin, said mixture being emulsified in water before polymerization.  The unsaturated alkyd resins are preferably produced by the esterification of an alpha-beta-unsaturated polycarboxylic acid with a polyhydric alcohol, particularly a glycol.  An emulsifying agent may be present, although some of the alkyd resins may themselves be active as emulsifiers, e.g. hexa-, hepta- and octaethylene glycol maleates.  Emulsifiers specified are diamyl, dihexyl, dioctyl sulphosuccinic esters and salts, salts of alkylated naphthalene sulphonic acids, long chain quaternary ammonium compounds, sulphonated or sulphated higher alcohols and their salts, sulphonated oils, glycol oleates and linoleates, mineral oil sulphonates, aromatic sulphonates, wax acid soaps, triethanolamine soaps, monoglycerol linoleates, amino sulphonates and sulphates, ammoniacal or other alkaline caseins, lecithin, cholesterol, saponin, gelatine and emulsifying gums such as gum arabic.  Surface tension modifiers such as cyclohexanol, benzyl alcohol and pine oil may be present.  Specified materials containing a single ethylenic linkage are styrene, o-, m- or p-methyl styrene, alpha-methyl styrene, 2,4-dimethyl styrene, 2,3-diethyl styrene, 2-5-dimethyl styrene, isopropenyltoluene, vinyl naphthalene, the methyl, ethyl, propyl, butyl, cyclohexyl and cetyl esters of acrylic and methacrylic acids, vinyl acetate, vinyl butyrate, vinyl laurate, vinyl stearate, acrolein, methacrolein, acrylonitrile, methacrylonitrile, vinyl ether, methacrylamide, acrylamide, diallyl phthalate, diallyl succinate, triallyl carballylate and triallyl phosphate.  Specified alkyd resins are diethylene glycol maleate, alpha-propylene glycol maleate, hexaethylene glycol maleate, heptaethylene glycol maleate, octaethylene glycol maleate, dodecaethylene glycol maleate, decamethylene glycol maleate, octadecandiol maleate, the maleic esters of 2-2-dimethyl-propanediol-1-3, of 1-3-butanediol, of 1-2-propanediol and of 2-ethyl-2-butyl-butanediol-1-3, glycerol maleate undecylenate, triethyleneglycol chlormaleate, triethylene glycol terpene maleate, ethylene glycol fumarate and diethylene glycol fumarate. Polymerization catalysts include the organic superoxides, aldehydic and acidic peroxides, soluble cobalt salts and p-toluene sulphonic acid.  Polymerization inhibitors which may be present include hydroquinone, benzaldehyde, ascorbic acid, isoascorbic acid, resorcinol, tannin, sym.-di-beta-naphthyl p-phenyldiamine and phenolic resins. Other resins, e.g. melamine-formaldehyde, urea-formaldehyde, cellulose esters and ethers, phenolic resins, alkyd resins and ester gum may be present.  The alkyd resins may be prepared by the esterification of an alpha-beta-unsaturated organic acid with a polyhydric alcohol and may be modified with monohydric alcohols, monobasic acids and dibasic acids.