baber/WOPTO huggingface dataset:
Patent GB-171808-A (GB)
Title: Improvements in and relating to electric motor controllers
IPC: H02P25/28
Filed: 1920-09-03
Abstract: 171,808. Igranic Electric Co., Ltd., (Cutler-Hammer Manufacturing Co.). Sept. 3, 1920. Alternating-current motors.-Induction motors are controlled by connecting the rotor circuit to an automatically varying inductance in parallel with the ohmic resistance, the variation of inductance being produced by a core having a coil fed with continuous current from an auxiliary generator driven by the motor shaft. According to the arrangement shown in Fig. 1, the rotor circuit of the induction motor M contains resistances r<1>, r<2> and in shunt therewith variable inductance devices 1, 2 each of which consists of a pair of cores threaded through oppositely-wound reactance coils 13, 14 and a continuous-current coil 15 embracing both coils. The coil 15 is fed by a generator 4 driven by the motor M. The inductance is greatest when no current is traversing the coil 15. In starting the motor, the increasing speed of the generator gradually reduces the inductance to a minimum. Finally an electromagnetic switch 3 connected across the terminals of the generator comes into action to short-circuit the resistances r<1>, r<2>. A modification of this arrangement comprises an additional resistance, completing the delta connection and an additional core and coil member. A further modification provides switches and relays for reverse operation of the motor.
Patent GB-965453-A (GB)
Title: Improvements relating to door assemblies
IPC: E05D15/58
Filed: 1961-04-08
Abstract: 965,453. Wheeled lever jacks. WILLIAM NEWMAN & SONS Ltd., H. C. SHEAD, and S. A. ROLLASON. July 6, 1962 [April 8, 1961; July 14, 1961], Nos. 25540/61 and 25541/61. Divided out of 965,452. Heading B8J. [Also in Division E1] A device for supporting the free end of a door which is pivotally mounted at its other end on wheeled carriers adapted to run in tracks 22 extending across the door opening, as described in Specification 965,452, comprises a lever arm 51 which is secured to a shaft 52 supporting wheels 53 and which is integral with a lever arm 55 provided with a projection 56 adapted to engage in a recess in a block 58 secured to the bottom of the door 3. The arm 55 is integral with a shoe 59 which engages in a slot in the tracks 22. In operation, the arm 51 is inclined towards the pivoted end of the door and the projection 56 is engaged with the recess in the block 58. The arm 51 is then raised to a substantially vertical position in which it is maintained by a bracket 60 secured thereto and provided with a groove 61 to receive the free end of the door.
Patent GB-1125038-A (GB)
Title: Umbrellas and the like
Inventor: SCHAVERIEN STEWART SOLOMAN
IPC: A45B25/08
Filed: 1967-06-02
Abstract: 1,125,038. Umbrellas. SOL. SCHAVERIEN & SONS Ltd. 2 June, 1967, No. 25544/67. Heading A4P. An umbrella or the like includes a collar 8 mounted on sleeve 5 with limited axial movement thereon, the collar, which is readily detachable from the sleeve, having an internal surface 8a which can engage a lever 6 when the sleeve is in the closed position, co-operating with the lever to give a camming effect when the collar is pushed towards the open position, thus causing the sleeve to be released from the lever. The collar may also engage the lever at the open position in a similar manner.
Patent GB-1344353-A (GB)
Title: Textile printing process
IPC: D06P5/28
Filed: 1971-04-19
Abstract: 1344353 Transfer printing CIBA-GEIGY AG 19 April 1971 [1 April 1970] 25551/71 Heading B6C [Also in Divisions D1 and C4] Anodized aluminium is printed according to the transfer printing process with a support provided with at least one mono- or dichlorinated 1,5 - di - hydroxy - 4,8 - diamino anthraquinone or a mixed chlorinated and brominated 1,5 dihydroxy, 4,8 - diamino - anthraquinone and optionally with other dyestuffs and/or fluorescent whitening agents, which sublime at a temperature below 220‹ C., the support being heated above the sublimation temperature of the dye or dyes and if present, the whitening agent. The support comprises a non-textile flat structure, e.g. paper or metal foil which is dyed or printed with the required dyestuffs. The support may also comprise chips of any desired shape instead of a continuous sheet, which are strewn on the material. The printing may be effected on a heated roller or with a heating plate or with the use of steam or dry warm air at atmospheric or reduced pressure.
Patent GB-998325-A (GB)
Title: Improvements relating to suspension filing systems
Inventor: BOLTER TERENCE FRANK
IPC: B42F21/08
Filed: 1962-07-04
Abstract: 998,325. Index tabs. SNOWDEX Ltd. July 4, 1962, No. 25647/62. Addition to 941,024. Heading B6E. The index tab disclosed in the parent Specification, has modified stop means for preventing relative endwise movement in one direction between the transparent cover shield 6 and the base member 1, comprising one or more projections formed on, or secured to, one end of the cover shield 6. The cover 6, which is slid over the base 1 so that lips 9 on the cover engage projections 8 on the base, may be provided with a metal or other U-shaped clip 13, Fig. 2, secured to the web of the cover so that the free ends of the arms of the clip present inner and outer abutments. The inner abutment engages one end of the base to prevent endwise movement of the cover in one direction, and the outer abutment enables ready removal of the cover. In Fig. 4, the stop means comprises a U-shaped clip 13 on each arm of the cover 6 to engage the legs 1a 1b of the base 1; an additional U- shaped clip 13 may be provided on the web of the cover. In another form, an eyelet is provided on the web of the cover near one end, or on each arm of the cover, to serve as abutment or stop means. In a further form, one end of the web of the cover is bent inwardly to engage the end of the web 1c of the base, and the ends of the arms of the cover may also be bent over. Pimples 12 or the like may be provided on both legs 1a, 1b of the base 1, to prevent the edge of one folder fouling the projections 8 on the adjacent folder. Specification 937,052 also is referred to.
Patent GB-1046276-A (GB)
Title: Improvements relating to hydraulic pressure storage systems including piston pumps
IPC: F04B11/00
Filed: 1963-06-27
Abstract: 1,046,276. Reciprocating pumps. BARMER MASCHINENFABRIK A.G. June 27, 1963 [June 29, 1962], No. 25660/63. Heading F1A. In an hydraulic pressure storage system of a vehicle, with a piston pump driven by the vehicle transmission or its engine, noises are damped by arranging that the pressure developed by the piston stroke reduces the volume of the medium discharged from the pressure chamber by 20 to 50% of the piston stroke volume. This is achieved in the embodiment of Fig. 1 by placing a restrictor 12 in the liquid inlet passage 7 to cause such a flow resistance therein that air enters the compression space 5 via the clearance between the piston 3 and the cylinder 2, at the end of the suction stroke. The space 5 is connected to a pressure storage tank (not shown) through a valve 6. In an alternative embodiment, Fig. 2, an adjustable air or gas inlet valve 13 is arranged in the inlet pipe 7 downstream of a non-return valve 14. In another embodiment, Fig. 3 (not shown), the pump compression space widens out to a large compression chamber. Other embodiments include an air supply through bores in the cylinder, a compression space in which the widened part begins at the lower dead centre position of the piston 3, and a flexible compression chamber.
Patent GB-1464997-A (GB)
Title: Percussion to direct keying switching circuit for an electrical musical instrument
IPC: G10H1/057
Filed: 1974-06-10
Abstract: 1464997 Electrical keyboard instruments HAMMOND CORP 10 June 1974 [11 June 1973] 25665/74 Heading G5J In an electrical keyboard instrument having at least one impulse inducing percussion circuit 17, impulses are activated or inhibited by a single keying selection switch 28 that opens or closes a by-pass circuit associated with the or each percussion circuit 17. As described the keying selection switch 28 is connected to each by-pass circuit through a diode 27.
Patent GB-1311131-A (GB)
Title: Electronic image motion stabilization system
IPC: H04N5/232
Filed: 1970-05-28
Abstract: 1311131 Television HUGHES AIRCRAFT CO 28 May 1970 [4 June 1969] 25781/70 Heading H4F In a transportable viewing system employing an image intensifier tube 10 (Fig. 1) movement of the displayed image caused by motion of the viewing system is compensated by controlling the actual "pointing direction" of the system and by deflection control of the displayed image. As shown, the rate of change ##m of the actual pointing direction #m is derived by gyros 18 and combined substractively in 20 with a command rate signal ##c to produce the signal ##c-##m which is integrated in a two channel integrator 22 to provide an error voltage #E. The latter is then utilized via amplifier 24 and drive motors 14 to move the tube and lens system in a direction which minimizes the error voltage #E. The compensation effected by this control, however, is effective only in response to lowfrequency and steady state components of the error voltage #E and to compensate for higher frequency components (caused by vibration &c.) the voltage #E is also utilized via a coil driver circuit 26 (also Fig. 6, not shown) to apply a compensating deflection to a coil 28 surrounding the tube (also Fig. 2, not shown). Since the magnitude of the compensating deflection current required for a given angular displacement is inversely proportional to the field of view of the system and directly proportional to the light amplification of the tube (i.e. the velocity of the image forming electrons is directly proportional to the light amplification) the coil driver circuit 26 is controlled by control apparatus 30 which controls the light-gain and field-of-view of the tube in discrete steps. The deflection coil 26 is formed with a "cosine winding density" (Figs. 3, 4 and 5, not shown).
Patent GB-942600-A (GB)
Title: Improvements in and relating to percussion and tamping devices
IPC: E02D3/068
Filed: 1961-07-17
Abstract: 942,600. Percussive tools. FICHTEL & SACHS A.G. July 17, 1961, No. 25862/61. Heading B4C. [Also in Division E1] In a tamping and percussion device, Fig. 1, the driving engine 20 for a tamper piston 12 is mounted on resilient elements, which may be springs 22, which are located in a plane passing through the centre of gravity S of the engine. In an alternative embodiment (not shown), the shorter arm of the tamper housing 14 is the lower one and the common plane of the point S and the resilient element is vertical and also passes through the centre point of the tamper plate 10. In a further embodiment, Fig. 4, the engine crank-shaft 24 is mounted in members 32 separated from an extension 13 of the tamper housing 14 by resilient rubber cushions 30. In a still further embodiment (not shown) three springs 22 are mounted symmetrically about the longitudinal central plane of the device in the same plane as each other and the centre of gravity of the engine.
Patent GB-351323-A (GB)
Title: Improvements relating to radio receivers
IPC: H03J5/32
Filed: 1930-08-30
Abstract: 351,323. Wireless receiving systems. KOLSTER-BRANDES, Ltd., Cray Works, Sidcup, Kent.-(Assignees of Bohner, C. E. ; East Orange, New Jersey, U.S.A.) Aug. 30, 1930, No. 25964. Convention date, Sept. 5, 1929. [Class 40 (v).] In a remote control system, the insertion of a plug 6 associated with a loud-speaker 5 in one of a number of jacks 10, 11, 12 energizes the receiver and tunes it to the corresponding programme. The jacks 10, 11, 12 control relays 50, 51, 52 respectively which connect fixed condensers of predetermined value in the tuned circuits 27 .. 30 between the aerial and the detector D. The output circuit 76, 77 of the amplifier A is multipled to the jacks.
Patent GB-952075-A (GB)
Title: Production of cellular materials from addition polymers
IPC: C08F2/22
Filed: 1960-07-26
Abstract: Solid materials comprising pores having a plurality of aqueous droplets dispensed therein, are made by (1) forming a stable water-in-oil emulsion of at least one ethylenically unsaturated monomer (the monomer being the oil phase), a polymeric emulsifying agent soluble in the monomer which will be partly separated out by the pore-forming liquid and, as the pore-forming liquid, water or an aqueous solution, and (ii) polymerizing the moner without changing the dispersed nature of the emulsion. If desired, the material may be further treated (as by vacuum, pressure, draining or evaporation) to eliminate the liquid or vaporize it within the cells to form more expanded pores. Emulsifying agents specified are homo- or co-polymers of styrene; methyl-, ethyl- and butyl-methacrylates, vinyl acetate, acrylamide and acrylonitrile. Monomers specified are vinyl chloride, vinylidene chloride and butadiene (used in liquid form, i.e. under pressure); vinyl carbazole (molten); isoprene, chloroprene, allyl chloride, diallyldiglycol carbonate and maleic acid diethyl- and diallylesters. Pore-forming liquids specified are water and aqueous solutions of inorganic salts or organic substances, e.g. formamide and dimethylformamide containing saccharose, glucose, fructose or other carbohydrate or inorganic salts. The polymerization is effected in known manner with conventional initiators, activators and plasticizers. Pigments, dyes, glass fibres, metal gauze, textiles and flame retarders may also be added. Where foam and sponge material is desired, gas-forming substances, e.g. sodium bicarbonate, perborates, percarbonates and nitrites can be added to the liquid or organic diazonium salts, azo compounds sulphohydrazides and N-nitrosocompounds can be dissolved in the monomer, prior to polymerization. The rate of polymerization can be increased by adding a solid polymer (as powder or viscous solution), different from the emulsifying agent used, to the mixture prior to polymerization. In a typical example (2) styrene, lauroyl peroxide (initiator), polystyrene and polymethyl-methacrylate are emulsified by stirring with a mixture of ethanol and water containing acetic acid; the viscous emulsion is poured into a mould and hardened at 50 DEG C. to yield a solid porous mass, the pores of which are filled with water-ethanol.
Patent GB-816896-A (GB)
Title: Improvements in or relating to roller bearings
Inventor: CLARK SIDNEY FULLER
IPC: F16C33/54
Filed: 1957-08-17
Abstract: 816,896. Roller bearing cages. TORRING- TON CO. Aug. 17, 1957, No. 26026/57. Class 12(1). A roller bearing cage comprises a sheet-metal member 9, bent into the form of a cylinder, having cross-bars 13 which normally hold the rollers 7 from dislodgment inwardly and end collars 16 having inner flanges 17 fitting within the ends of the cylinder and having outer flanges 18 carrying integral fingers 19 which extend axially of the bearing between the rollers, thus preventing outward movement of the rollers. The cross-bars 13 have central portions 15 and stepped shoulders 14 which guide the rollers 7 and the bars have sufficient resilience to allow the central portions 15 to be spread apart to receive the rollers 7.
Patent GB-967814-A (GB)
Title: Process for the preparation of alkoxy-and aryloxysilanes
IPC: C07F7/02
Filed: 1960-07-27
Abstract: Silanes of the formula (RO)3SiH and (RO)2Si H2, where R is C1- 4 alkyl or phenyl, are prepared by the reaction of gaseous ROH with finely divided silicon in a fluidised state and containing a metal catalyst at a temperature of 100 DEG  to 450 DEG C. characterised by (1) performing the reaction below 350 DEG C., (2) using a velocity of fluidising gas greater than 3 times the minimum velocity required for fluidisation, or (3) adding hydrogen and/or nitrogen to the reactants; the formation of undesirable (RO)4Si and SiO2 being thereby suppressed. Preferred temperatures are 250 DEG  to 350 DEG C. and the fluidising gas velocity is preferably 10 times the minimum. The silicon mass preferably contains copper as the catalyst with zinc as promoter, and may be prepared by heating powdered cuprous chloride, zinc and silicon in a stream of nitrogen.
Patent GB-1213720-A (GB)
Title: Improvements in or relating to prefabricated self-contained kitchen units
IPC: F24C15/16
Filed: 1968-05-30
Abstract: 1,213,720. Cooking ovens. SIEMENS-ELECTROGEKATE G.m.b.H. 30 May, 1968 [20 June, 1967], No. 26059/68. Heading F4W. The controls 3 of a cooker are arranged in a flat box 2 of less depth than the oven 4, and the control box 2 and oven 4 are arranged side by side in a unit 1 which may have a warming or storage compartment 5 below the control box 2. The unit is arranged to be built in below a top panel 6 which may include hot plates 7 and washing up sinks 10. The assembly of the cooker unit 1, and top plate 6 may include an electric storage water heater 20. The oven door may be combined with a pan support to form a drawer, Fig. 2 (not shown).
Patent GB-683475-A (GB)
Title: Improvements in or relating to electric discharge tubes for accelerating particles
IPC: H01J5/06
Filed: 1949-10-11
Abstract: 683,475. Discharge apparatus. RESEARCH CORPORATION. Oct. 11, 1949 [March 16, 1949], No. 26063/49. Class 39(i) In an evacuated high-voltage acceleration tube the wall of the tube is wholly composed of a multiplicity of thin metallic ring-like electrode members and alternating ring-like insulating members bonded together in contacting face to face relation between the respective end cathode and anode assemblies, and for the purpose of reducing the tendency to produce secondary particles (such as electrons, positive ions or photons) and at the same time increasing the voltage gradient which can be applied along the tube, the metallic members are each thin and each has an axial opening, the size or transverse positions of the openings varying along the length of the tube beginning immediately following the cathode assembly but without necessary changes in the diameter of the insulating members or of the openings therethrough. Fig. 1 shows an X-ray tube for use with voltages of the order of 2 million volts; the cathode assembly 3 is bolted to the tube with an intervening gasket and the cathode itself may be a tungsten filament 8. The electrodes 11 have apertures which increase progressively in size to the anode assembly 2 which may include a gold anode target 9. In a modification, Fig. 2 (not shown), the electrode nearest the cathode has a wide aperture and the apertures of the electrodes decrease in size to a minimum about a quarter of the way along the tube and thereafter progressively increase to a maximum at the anode end of the tube. In further modifications, Figs. 3 and 4 (not shown), the apertures increase stepwise instead of continuously, that is to say several adjacent electrodes have the same aperture and the next group of electrodes has a slightly larger aperture. In a further modification, Fig. 6 (not shown), the apertures are all of the same diameter but are placed eccentrically, the eccentricity being progressively advanced circumferentially. In a positive ion tube where hydrogen or deuterium may escape into the tube from the ion source and pumping speed is important, the electrodes with small apertures may be provided with further apertures which take no part in the discharge but assist in maintaining pumping speed. Fig. 5 (not shown). Specification 703,471 is referred to. The Specification as open to inspection under Sect. 91, comprises also the use of electrodes of which the apertures progressively decrease in size from the cathode to the anode, a construction which may be particularly useful in positive ion tubes. This subject-matter does not appear in the Specification as accepted.
Patent GB-1405359-A (GB)
Title: Resistance butt-welding apparatus
IPC: B23K11/093
Filed: 1973-05-31
Abstract: 1405359 Welding by pressure INSTITUT ELEKTROSVARKI IMENI E O PATONA AKADEMII NAUK UKRAINSKOI SSR 31 May 1973 26098/73 Heading B3R [Also in Division B8] Apparatus for welding together borehole casing pipes and lowering the welded string of pipes into the borehole comprises a resistance butt welding machine 1, Fig. 1, having annular housings with clamping means for embracing and clamping both the pipe to be welded and the already-welded easing string, lifting means 5 and pipe gripping means 2 for lifting and lowering the pipe 3 to be welded into the welding machine and for supporting the weight of the welded string after each welding operation as the string is lowered into the borehole, the pipe gripping means 2 having a maximum cross-sectional dimension not exceeding the outer diameter of the pipe so as to permit passage of the gripping means through the clamps of the welding machine. The welding machine is fixedly mounted on the table 6 of a drilling rig 7. The pipe gripping means (see Division B8) has wedge-shaped jaws (Fig. 4, not shown) which grip the pipe (or welded casing string) under the weight of the pipe (or pipes). The welding machine itself comprises upper and lower annular housings 9, 8, Fig. 2, adapted to be forced together for welding and upsetting by hydraulic cylinder units 21, and each housing 8, 9 encloses an annular member 10, Fig. 3, adapted to be turned by the action of hydraulic cylinders 11 in order to force a series of clamping and current-carrying shoes 14 on to the pipe surfaces to clamp the pipes during welding and upsetting. Reverse action of the cylinders 11 frees the shoes 14 from the pipe surface by means of cranked levers 18 which engage abutment shoulders 20 on the holders 10. The pipe gripping means has a central through bore to allow passage of a tool for removing weld flash.
Patent GB-603593-A (GB)
Title: Apparatus for deaerating liquids
IPC: B01D19/00
Filed: 1945-10-09
Abstract: <PICT:0603593/III/1> An apparatus for de-aerating liquids comprises a vacuum vat 1, a distributing element 4 disposed inside and towards the top of the vat, an inlet pipe 2 and an evacuation pipe 22 disposed near a cover 20 of the vat and provided for evacuation of liberated gases, a pump body 5 disposed in the lower part of the vat so that its upper part a is inside and its base b is outside the vat, apertures c being provided on a level with the base of the vat to enable de-aerated liquid to pass into the pump body in which slides a piston 6, the pump body communicating in its lower position with a discharge pipe f on which is fitted a spring valve 7 so arranged as to close the pipe when it is not subjected to the pressure of the liquid driven by the piston.  The pump body, which is preferably rigidly connected with the vat, may at its lower part be fixed removably to a base on which are mounted the discharge pipe and driving gear for the pump.  The liquid to be de-aerated is caused to fall downwardly in a thin film by means of the distributing element which may comprise a cup member 4 against which strikes liquid under pressure from a nozzle 3, or a circular chamber which receives the liquid under pressure, the chamber having beneath its lower surface an annular slit or a plurality of parallel rectilinear slits.  The de-aerated liquid is discharged from the vat by the thrust of the lower surface of the piston.  An antipulsating device, such as a buffer chamber with means for evacuating the liquid therefrom and means for introducing a gas therein, may be connected to the discharge pipe.