baber/WOPTO huggingface dataset:
Patent GB-1104354-A (GB)
Title: Electric variable speed drive system
Inventor: AGARWAL PAUL DHARAM
IPC: B60L50/13
Filed: 1966-06-10
Abstract: 1,104,354. Control of A.C. motors; inverting. GENERAL MOTORS CORPORATION. 10 June, 1966, No. 25949/66. Headings H2F and H2J. A squirrel cage motor is energized from an A.C. source, the voltage of which is adjustable to control the torque and the frequency is controlled to correspond to the actual motor speed plus a constant value of slip. The motor is a three-phase machine for traction and the source comprises a thyristor inverter which is energized from a battery or fuel cell, with a voltage selector switch, or an engine driven alternator followed by a rectifier. For a star connected stator the inverter comprises two thyristors A1, A4 in each phase, which supply positive and negative half cycles respectively each of 120 degrees duration followed by 60 degrees of zero output, which is said to eliminate third and higher harmonics in the motor windings. Two further thyristors A3<SP>1</SP>, A6<SP>1</SP> shut the first two off by a commutating capacitor 57 and two more A6<SP>11</SP>, A3<SP>11</SP> allow reactive power to be returned to the supply, but these may be dispensed with if the main thyristors are switched over for regenerative braking. Alternatively, the commutating thyristors may be eliminated by using main thyristors of the type which can be turned off by a negative gate pulse, or by connecting the stator in delta so that current in one phase effects turn off in another. Triggering may be effected by a train of pulses from a transistor oscillator (e.g. at 10 kc/s.) via a saturable transformer having secondaries (one for each thyristor) switched by a photocell 53, the illumination of which is controlled by a revolving shutter 55 driven by a differential gear 48 which adds rotor speed to that of a D.C. motor 47 whose speed is adjustable to correspond to the required slip. In one alternative arrangement the summation is made in a transformer device (Fig. 8, not shown) having stationary windings energized from a slip frequency generator and secondaries rotated by the rotor shaft, the sum being induced in a stationary pick-up winding. In another arrangement (Figs. 9, 10, 11, not shown) the output of an A.C. tachogenerator is rectified and smoothed to produce an actual speed voltage to which is added a voltage for the desired slip, and this sum controls the frequency of an oscillator which actuates ring counters (one per phase) which supply the triggering pulses. In Fig. 12 (not shown) the shaft driven alternator is replaced by a toothed wheel magnetic impulse generator.
Patent GB-906586-A (GB)
Title: Buffing or abrading tools
IPC: A46B3/00
Filed: 1961-07-18
Abstract: 906,586. Rotary brushes. GOODYEAR TIRE & RUBBER CO. July 18, 1961 [Oct. 25, 1960], No. 25958/61. Class 19. A luffing or abrading device for use in combination with a powerdriven tool to rotate the device, comprises a body portion 2, means 3 for attaching to the powerdriven tool, a multiplicity of closely spaced, stiff, resilient elements 5 extending from and firmly attached to the body portion, and a resilient rubber-like material 9 encasing substantially the entire length of the extended portion of the elements 5. The elements 5 are preferably of wire and are adhered to the material 9 which may be one of the polyurethane elastomers.
Patent GB-442751-A (GB)
Title: Improvements in or relating to junction fittings for use in connection with electrical wiring conduits
IPC: H02G3/06
Filed: 1934-09-11
Abstract: 442,751. Pipe couplings. ELECTRIC SUPPLIES (BLOXWICH), Ltd., SOMERFIELD, T., WOOTTON, F., and GARRATT, H., Sneyd Lane, Bloxwich, Walsall. Sept. 11, 1934, No. 26036. [Class 99 (i)] A tee-piece, elbow, ox like junction piece for electric wiring conduits comprises a body portion a formed from a pressing, and socket portions b consisting of short lengths of seamless tubing welded to the body. The Figure shows a tee-junction of the inspection orifice type having a removable cover c. The sockets may be strengthened by ferrules or reinforcing- sleeves fitted around their ends.
Patent GB-518798-A (GB)
Title: Improvements in or relating to rotary cutters for safety razors
IPC: B26B19/18
Filed: 1938-09-06
Abstract: 518,798. Hair clippers. FAIREY, C. R. Sept. 6, 1938, No. 26058. [Class 131] In a rotary cutter of a safety razor constituted by a number of helical blades the latter are loaded so as to force them radially outwards from the axis of the cutter against the fixed blade. The blades a are supported at their ends e, f and are loaded by a spring j which is adjustable by a pin k with a cam-shaped head. In another form the collars e, f are connected by a tie-member the effective length of. which may be varied by a screw. Fig. 6 shows an axial rod 5 provided with splines q, r co-operating with the collars whereby after disengagement relative angular adjustment provides the necessary loading.
Patent GB-676181-A (GB)
Title: Improved vent cap for storage batteries
IPC: H01M2/12
Filed: 1950-10-26
Abstract: 676,181. Batteries. GENERAL MOTORS CORPORATION. Oct. 26, 1950 [Nov. 4; 1949], No. 26087/50. Class 53. A vent plug for a storage battery comprises a threaded body 22 having a partition 30 provided with a central opening through which the stem of a mushroom-like valve 36 passes. The stem of the valve is formed with projections 42 which engage the lower surface of the partition. Apertured closure plates 50, 56 are sprung into grooves in the body. The valve 36 is made of polyethylene or other resilient material so that it can lift under the pressure of gas. When the valve is being placed in position the projections 42 bend sufficiently to enable the stem to be passed through the opening in the partition 30. The body 22 is made of resilient material and the part 66 is tapered but becomes flattened when the plug is screwed into the battery cover so that a tight joint is produced without the use of a gasket.
Patent GB-1431657-A (GB)
Title: Oxidation of ammonia
IPC: B01J8/00
Filed: 1972-06-05
Abstract: 1431657 Oxidation of ammonia IMPERIAL CHEMICAL INDUSTRIES Ltd 30 May 1973 [5 June 1972] 26132/72 Heading C1A [Also in Division B1] A downflow catalytic reactor for oxidation of ammonia comprises a bed containing an ammonium oxidation catalyst other than an allmetal platinum group metal catalyst, and means to observe the underside of the catalyst optically while in use in the ammonia oxidation. The means may be water cooled, and may be a mirror viewable through a sight-hole in the reactor wall, on wide-angle telescope or scanning lens linked optically or electronically to the outside of the reactor, or a scanning holometer adapted to scan the underside area of the catalyst.
Patent GB-1495208-A (GB)
Title: Screening apparatus
IPC: B07B1/46
Filed: 1975-06-20
Abstract: 1495208 Screens N GREENING & SONS Ltd 11 June 1976 [20 June 1975] 26244/75 Heading B2H A screen comprises one or more apertured plates 1 of flexible non-metallic material, the or each plate having a plurality of bars 3 projecting from the undersurface thereof, and being supported by bars 5 provided with apertures 6 which receive the bars 3. Each plate 1 may be provided with reinforcing wires or rods (8), Fig. 3 (not shown) and with tensioning wires or rods (9) moulded into the plate, the reinforcing wires extending at right angles to the bars 3 and the tensioning wires being parallel to the bars 3. Alternatively, thin walled tubes (10), Fig. 4 (not shown) are incorporated in the plate during moulding to form bores through which the wires or rods can be threaded. The bars 3 may be formed integrally with the plate 1 or they may be added to a preformed plate. In the latter case, the'apertures lying in a plurality of spaced lines across the plate are formed with a step (7) Fig. 2 (not shown) which assists in holding the moulded-on bar 3 in place. When the screen comprises a plurality of plates 1, the edges of adjacent plates may be stepped and of such a shape as to define apertures into which a material is cast to form the assembled array of plates into a unitary structure. The bars 5 may have different heights to produce a cambering of the screening surface.
Patent GB-1367438-A (GB)
Title: Means and method for an on-line determination of the flash point of lube oil fractions
IPC: G01N33/28
Filed: 1973-06-01
Abstract: 1367438 Determining flash point electrically TEXACO DEVELOPMENT CORP 1 June 1973 [15 June 1972] 26265/73 Heading G1N The flash point P of an oil is estimated by measuring the specific gravity G and viscosity V and solving the equation P = k 1  + k 2 /G - k 3 /VG, where k 1 , k 2 , k 3  are constants. As shown (Fig. 1), the density of the oil in a line 1 is measured at 5 and the signal converted to E 15  representing API gravity G, the viscosity V is measured at 10 to produce a signal E 2 , and the two signals are combined in the circuitry shown in accordance with the above equation to produce a signal E 5  0  representing the flash point P. Another embodiment Fig. 2 (not shown) determines flash point from the viscosity and density values by a different relationship.
Patent GB-235452-A (GB)
Title: Improvements in valveless plunger pumps for viscous liquids
IPC: F04B1/12
Filed: 1924-11-04
Abstract: 235,452. Wiskemann, F. Nov. 4, 1924. Cam-actuated pumps; stroke, varying; revolving-cylinder pumps. - In a valveless plunger pump for viscous liquids of the kind in which the cylinders are in a cylindrical rotor 2, the plungers being actuated by a rotating swashplate, the ball-heads 3<a> of the plungers are secured by and fit into guide rings 4, 5 held between discs 6, 7. The rings, discs and two ball bearing rings 8, 9 are secured by a single bolt 12 accessible through a plugged opening in the cover 1<a> to which the outer ring 10 is attached and which pivots on pins 16 secured to the barrel 1. The interior of the cover is hemispherical and it is centred by a spherical sleeve 15 secured to the barrel. The inclination of the swash plate is adjusted by two bolts 14 securing the cover to the barrel, and a pointer 19 on one bolt may co-operate with a scale on the cover. The centres of rotation of the cover and of the plunger heads coincide.
Patent GB-227541-A (GB)
Title: Improvements in the actuating mechanism of coin freed automatic machines
IPC: G07F17/00
Filed: 1923-10-22
Abstract: 227,541. Black, H. D. Oct. 22, 1923. Motor mechanism; coin action, Weight and multiple-coin. - In coinfreed delivery or amusement machines of the kind in which the actuating movement is effected by a spring motor, wound by mechanism actuated by a lever moved through a predetermined arc, the said mechanism being released after the insertion of a coin or coins into the machine and prior to the functioning of the latter, the spring motor b, Fig. 4, is wound after prepayment by turning through a predetermined are a lever handle. on a shaft k which has an arm h permanently connected by a link j to an arm e provided with a driving pawl f engaging a ratchet wheel f<1> on the winding shaft b<4> of the motor. The arm h is normally blocked by a detent n pressed by a spring n<2> against an extension o of the arm. A coin ineerted through a shoot p tilts by weight a lever g which in turn depresses an escapement lever r having two teeth r<2>, r<3>, the tooth r<3> engaging a tooth s on a segmental plate s<1> carried by a wheel c<2> rotatable, by the motor. This allows a slight movement of the wheel c<2> so that a pin t thereon engages a cam surface n<3> on the detent n, rocking this to free the arm h, the pin t then engaging a notch n
 in the detent to prevent further rotation of the wheel c<2> until the motor is wound. The arm h has a double ratchet toothed rack u, u<1> engaged by a double pawl v, v<1> to ensure a complete upward and downward stroke of the winding handle, the return to normal position of the arm h being effected by a weight. When the arm h returns to normal position, the detent n is moved by its spring n<2> to its blocking position, thus freeing the pin and allowing the wheel c<2> to complete its rotation to actuate the delivery or other mechanism. The speed of the wheel c" is controlled by a fly c<1>. The lever r is positively engaged with the tooth s by a. cam surface s<2> on the plate s<1> coacting with the tooth r<2>. Where more than one coin is required to free the machine, the segmental plate s<1> has an additional tooth s<2>, Fig. 7, for each additional coin. The first coin disengages the lever r from the tooth s and the subsequent coin disengages it from the tooth s<3>, engagement with which is ensured by a cam surface s<4> coacting with the tooth r<2>.
Patent GB-963062-A (GB)
Title: Improvements in or relating to catalytic engine exhaust gas burning devices
IPC: F01N3/08
Filed: 1960-07-29
Abstract: 963,062. Exhaust-silencers; treating exhaust. F. BOYSEN, and AUTO UNION G.m.b.H. July 29, 1960 [July 31, 1959], No. 26602/60. Heading F1B. A catalyst bed container 11 is secured to a removable end 13 of a silencer 10, as by a pin 34, at one end, the other container end being supported by an inlet pipe 26 slidable in a partition 14. Exhaust gases, optionally from a silencer designed to effect resonance supercharging, enter via pipes 31, 26 a chamber 16 separated from the actual bed compartments 15 by a perforated plate 19, the inter-compartment partitions 18a being also perforated. The gases leave the container 11 by a perforated floor 20 and pass to an outlet pipe 33 which may lead to a further silencer. The pin 34 is mounted in eyes 38a of the bolted-on silencer end 13 removal of which therefore withdraws the container 11 from the silencer 10, when the pin 34 can be slidden out of the eyes 38a and of further eyes 36a on a recessed container end 25 to allow removal thereof. Relative rotation of the members 25, 13 about the pin 34 may be prevented. The silencer 10 has a mineral wool packing 40 about perforated inner walls. The transverse cross-section of the chamber 16 can be fully rectangular or tapered at either end. In a modification, the silencer 10 is separated by a central vertical axial and possibly perforated partition into two chambers each having a container 11. The members 10, 11 are of chromium-nickel steel.
Patent GB-730219-A (GB)
Title: Waveguide switches
IPC: H01P1/12
Filed: 1952-10-23
Abstract: 730,219. Wave-guides. AIRTRON, Inc. Oct. 23, 1952 [Nov. 29, 1951], No. 26630/52. Class 40 (8). A wave-guide switch comprises a casing 20 to which wave-guide terminals 26a, 26b, 26c, 26d, 26e, 26f, and 26g are connected, and which contains rotatable switch member 30 containing a number of curved switching tubes 60e, 60f and 60g, tube 60e being capable of connecting the first two wave-guide terminals, and tube 60f being incapable of this, but able to connect the first and third terminals in another position of the rotor 30. A third tube 60g is also shown capable of joining terminals of still wider spacing than those joined by tube 60f. If the tubes and terminals are of rectangular cross-section with their larger sides transverse to the axis of rotation of member 30, leakage at the gap between the tubes and terminals may be reduced by arranging for the edges of the larger sides of the tubes and terminals to overlap. As a further precaution these overlapping portions may be in contact. Specifications 635,900 and 675,741 are referred to.
Patent GB-532978-A (GB)
Title: Improvements in, or relating to, winding apparatus for fire hose, and other hose of a like character
IPC: B65H54/58
Filed: 1939-09-28
Abstract: 532,978. Coiling hose pipes. WOLVERHAMPTON MOTOR SERVICES, Ltd., and RUSSEL, A. E. Sept. 28, 1939, No. 26779. [Class 94 (i)] Relates to a device for coiling collapsable hosepipe, comprising two rotatable metal discs between which the hose is wound. According to the invention, the distance between the discs is adjustable in order that the device may be used for coiling hose of different widths The discs d<SP>1</SP>, d<SP>2</SP>, Figs. 1 and 2, are provided with short shafts f, f<SP>1</SP> respectively, which are journalled in bearings on a frame b<SP>2</SP>. Each disc has a radial slot d' adapted to receive one of the trunnions of the hose coupling. The shaft f<SP>1</SP>, or both shafts, is formed with a number of peripheral grooves f<SP>2</SP> into which a lever or handle Q, hinged to the bearing c<SP>2</SP>, can enter to prevent endwise movement of the shaft, By lifting the lever Q, the shaft can be moved endwise to adjust the distance between the discs d<SP>1</SP>, d<SP>2</SP>. When the device is to be used, the trunnions of the hose coupling are inserted in the slots d<SP>3</SP>, and a plate P, Fig. 6, is inserted in slots d' to secure the coupling in position. The end of the plate is turned up at p to enable it to be withdrawn by a tool R when the coiled hose is removed from between the discs.
Patent GB-602385-A (GB)
Title: New or improved kiln for drying or calcining
IPC: F26B17/16
Filed: 1945-10-13
Abstract: 602,385. Kilns. BUCHANAN & SON (LIVERPOOL), Ltd., J., and PAIN, J. B. Oct. 13, 1945, No. 26837. [Class 51(ii)] A kiln for heating, drying or calcining comprises vertical rotatable kiln pipes 20 each of which has a concentric gas and vapour withdrawal pipe with louvrecovered openings at intervals therealong, and groups of flues 29 disposed between and adjacent to said kiln pipes, each group of flues being heated by individually controlled gas burners. The main gas supply pipe 22 is controlled by a valve 23, the branch pipes 24 supplying groups of burners are each controlled by a valve 25 and each bunsen burner 26 is controlled by a valve 32. Secondary air is admitted at 27 and the combustion products pass to a chamber 28 and from thence through four openings 28a to four flues 29 connected at the tops by a chamber 30 connected to a single flue 31. Dampers (not shown) may be provided at 30a. The flues 31 are connected to a flue which conveys the gases to a waste-heat boiler, or preheater, on the way to the chimney. According to the Provisional Specification, burners adjacent to the upper ends of the pipes may be separately controlled for preliminary drying of the material.
Patent GB-1273948-A (GB)
Title: Process for the preparation of spherical particles of nuclear fuel
IPC: B01J2/08
Filed: 1971-04-19
Abstract: 1,273,948. Nuclear fuel. EUROPEAN ATOMIC ENERGY COMMUNITY. 19 April, 1971 [10 April, 1970], No. 26837/71. Heading G6C. Spherical nuclear fuel particles are prepared by mixing a concentrated denitrated uranyl nitrate solution with a plutonium hydroxide sol and an ammonia donor, and gelling drops of the mixture. The product may be washed, dried, and heated, e.g. in a mixture of N 2  and H 2 , to form a mixed oxide. To make a mixed carbide, finely divided carbon is added to the mixture to be gelled. A mixed nitride is prepared by adding a smaller amount of carbon and heating in nitrogen. The ammonia donor may be urea or hexamethylene tetramine. The droplets may be gelled by contact with a mixture of paraffin oil and tetrachloroethylene. The uranyl nitrate solution is denitrated by treatment with a solution of primary amines in a water-immiscible solvent.
Patent GB-277279-A (GB)
Title: A resistance device for controlling current in electrical circuits
IPC: H01C10/12
Filed: 1926-10-27
Abstract: 277,279. Radio Patents Corporation, Inc., (Assignees of Dubilier, W.). Sept. 11, 1926, [Convention date]. Holders.-A thermally operated electric control device consists of a bimetallic member heated by the current passing through a resistance block or blocks, the resistance of which is regulated by the pressure of the bimetallic men ber. Fig. 3 shows an arrangement of this sort suitable for insertion in a lamp socket to light and extinguish the lamp periodically. The bimetallic strip 5 is mounted on an insulating disc 1 carrying metallic caps 17, 19 and enclosing the resistance block 11 which is compressed between the strip 5 and a spring 12. When the strip 5 is heated it closes the contacts 2, 7, short-circuiting the block 11 and allowing it. to cool until the contacts again separate. The blocks and strip may be arranged in series.
Patent GB-373899-A (GB)
Title: Improvements in or relating to starting mechanism for motor vehicle engines
IPC: F02N99/00
Filed: 1931-09-28
Abstract: 373,899. Turning-gear. SOC. DE PARIS ET DU RHONE, 41, Chemin de St-Priest, Lyons, France. Sept. 28, 1931, No. 26972. Convention date, Oct. 3, 1930. Addition to 342,624. [Class 7 (v).] A dynamo-electric machine serving as a starting-motor and as an enging-driven genera. tor is geared to the engine by a belt, the tension of which is increased, when the machine is used as a motor, simultaneously with the operation of a switch 1 in the motor circuit of the machine. According to the invention, the closing of the switch 1 is effected only after the tension of the belt has been increased to the required degree. As shown, the switch 1 is actuated by a handle 2 connected by a rod 3, a bell crank 6 and a spring 5 to a jockey pulley for tensioning the belt. In a modification, separate controls for the switch and the jockey pulley are actuated simultaneously. Means may be provided for tensioning the belt to a less degree when the machine is driven as a generator, and means for increasing the torque on starting, such as described in Specification 262,064, [Class 38 (iv), Electric supply and transmission systems &c.].
Patent GB-1167585-A (GB)
Title: Improvements relating to Stationery
Inventor: HALL EDGAR HENRY
IPC: G09F3/02
Filed: 1967-06-12
Abstract: 1,167,585. Continuous stationery. FANFOLD Ltd. 12 June, 1968 [12 June, 1967], No. 27060/67. Heading B6A. A continuous stationery assembly comprising a backing web 1 having two rows of labels 2 mounted thereon by a self-adhesive and a pair of marginal rows of sprocket wheel perforations 4b, is provided along each margin with a reinforcing self-adhesive strip 3 in which the perforations 4a are aligned with the sprocket wheel perforations 4b.
Patent GB-1218439-A (GB)
Title: Roll assembly with vibration damping means
IPC: F16C13/00
Filed: 1968-06-07
Abstract: 1,218,439. Papermaking. MOUNT HOPE MACHINERY Ltd. 7 June, 1968 [3 April, 1968], No. 27107/68. Heading D2A. [Also in Division F2] A table roll 12 of a Fourdrinier machine is rotatably mounted on a hollow axle 10 by means of fluid bearings 14. Liquid is supplied to the bearings under pressure via the duct 26 and after passing through the bearings, flows into the space 19 between the roll and the axle. Radial projections 66 are provided on the interior surface of the roll and interact with the liquid to damp vibrations of the roll. Annular seals 30 are provided at each end of the roll 20 as to maintain the space 19 substantially full of liquid.
Patent GB-691272-A (GB)
Title: Improvements in or relating to telephone hearing aid devices
IPC: H04M1/215
Filed: 1950-11-06
Abstract: 691,272. Deaf aids; sets. CANADIAN BENAUDI CO., Ltd. Nov. 6, 1950 [Nov. 5, 1949; Feb. 10, 1950], No. 27121/50. Drawings to Specification. Class 40 (iv). A device for enabling a person hard of hearing to take part in telephone conversations comprises the combination with an amplifier and receiver means connected to the amplifier of a housing in the form of a flat box suitable for positioning beneath the base of a telephone instrument, inductive pick-up means in said housing, and circuit means connecting the pick-up means to the amplifier. The amplifier and receiver may be those of a conventional hearing aid, the pick-up means being used as an alternative source of currents to the normal microphone. Alternatively the amplifier may be contained in the flat box. U.S.A. Specification 2,134,084 is referred to.