baber/WOPTO huggingface dataset:
Patent GB-982391-A (GB)
Title: Centrifuge
IPC: B04B11/04
Filed: 1963-03-05
Abstract: 982,391. Centrifugal strainer separators. K. JANSEN, L. STEIMEL, R. STEIMEL, M. STEIMEL, A. PETH (nÚe STEIMEL), and H. STEIMEL, [trading as GEBR. STEIMEL]. March 5, 1963 [March 7, 1962], No. 8686/63. Heading B1D. Four flaps 81 to 84 rest on stops 89, Fig. 1, when fluid is released from cylinder 91, the centrifugal drum 9, 12 being at rest. The flaps constitute a feeding funnel. When flap 80 is raised by admission of fluid to cylinder 91, it lifts the remaining flaps eventually to closed position. Preferably a switch 93, Fig. 2, in the circuit of the driving motor 3, Fig. 1, is actuated when the flaps are closed by a tongue 94 fixed to flap 80. Solids are discharged from the drum by raising the wall 12 hydraulically (see parts 13, 14, 40 to 43, Fig. 1) away from base 9 at the Conclusion of a cycle of operation.
Patent GB-580824-A (GB)
Title: Improvements in electric oscillation generators
IPC: H03B19/10
Filed: 1944-05-08
Abstract: 580,824. Valve generating circuits; superheterodyne receivers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and GRISDALE, G. L. May 8, 1944, No. 8706. [Class 40 (v)] Harmonic frequency output is obtained from a crystal controlled oscillator by providing a tuned circuit and an inductance, across which the output is taken, connected in series with the capacitative branch of the tuned circuit. Currents at fundamental and harmonic frequencies pass from anode to cathode of the valve v<1> through the tuned circuit LC<1> but since the capacitative branch offers a lower impedance at higher frequencies the harmonic frequency current passes through the capacitor C<1> and inductance L<111>. The inductance L<111> is chosen with a small inductive value so that the circuit LC<1> is not detuned. L<111>is also chosen so that the circuit L<111>C<111> resonates at a frequency slightly higher than the highest harmonic required, since the impedance of L<111>C<111> rises with frequency up to the resonant frequency, while the amplitude of the current falls, thus giving a fairly constant harmonic potential over the required range. If it is desired to select one harmonic frequency for use, for example, in a superheterodyne receiver, Fig. 4 (not shown), an actual variable condenser C<111> may be included and the circuit L<111>C<111> tuned to the desired frequency. The output may be puriried from unwanted frequencies by applying it to amplifier stages, Fig. 5 (not shown) coupled by circuits tuned to the desired frequency.
Patent GB-1212398-A (GB)
Title: Improvements in or relating to insulation testing
IPC: G01R27/02
Filed: 1968-02-22
Abstract: 1,212,398. Protective arrangements. PRECISION MECANIQUE LABINAL. 22 Feb., 1968 [22 Feb., 1967], No. 8716/68. Heading H2K. [Also in Division G1] In a system for non destructively testing the insulation of equipment 20, high alternating voltage of variable peak amplitude is supplied to the equipment, any fault current pulses due to the breakdown of the insulation are detected and the detection of a fault current pulse in excess of a given value is used to operate a system which cuts off the high alternating voltage at a point in its alternating cycle where its instantaneous voltage value is substantially zero. By cutting off the voltage at this point undesirable spikes are not applied to the test equipment at switch off. The high alternating voltage is derived from the mains via a power pack 1 wherein it is adjustable at 36 and is passed via a step up transformer 2 to a test rig 4 containing the equipment 20. The voltage at which any breakdown in the equipment occurs is observed on the instrument 6. A pick up current transformer 3 responds to current pulses in the supply line. These are filtered and amplified at 22, 23 in the control unit 5 and if they are in excess of a given value a controlled rectifier 24 is activated so that relay winding 25 is energized. This opens a switch 26 in the control circuit of a bidirectional thyristor 10 in the supply path between the input transformer 7 of the power pack 1 and the output transformer 2. The thyristor continues to conduct until the voltage across it is zero, whereupon it cuts off to disable the supply to the test rig.
Patent GB-822544-A (GB)
Title: Improvements in and relating to induction heating apparatus
Inventor: TODD JULIAN KELSALL
IPC: H05B6/02
Filed: 1955-03-25
Abstract: 822,544. Mounting faceplates and crank-shaft chucks. ENGLISH ELECTRIC CO. Ltd. March 26, 1956 [March 25, 1955], No. 8769/55 Class 83 (3). [Also in Group XI] A crank-shaft of which the main bearing portions 25 and crank-pins 24 are to be induction-heated for hardening is supported by centres 22, 23 between face-plate assemblies 11, 12. Each assembly comprises a face-plate 15 secured to a shaft 13; an intermediate face-plate 16 having a dove-tail projection 16a which slides in a slot 15a in the plate 15; and a work-carrying face-plate 17 pivoted to the plate 16. The plate 16 can be locked in either of two positions relative to the plate 15 by a spring-loaded plunger 18, the two positions being separated by a distance equal to the throw of the crank-shaft. A further plunger 19 locks the rotatable plate 17 in any one of three positions, 120 degrees apart, relative to the plate 16, and a clamp 20 locks the plates 16, 17 together. The face-plate-assemblies are initially set-up as shown in Fig. 3, this corresponding to a crankshaft-position diagrammatically shown in Fig. 4a. A work-coil 10 is then placed over one bearing 25 and the entire assembly rotated by applying a drive to the shafts 13 while the coil is energized. After treating the second main-bearing in the same way, the plungers 18 are withdrawn and the intermediate face-plates 16 moved downwards until they are located by the plungers in the lower of their two fixed positions. The crankpin 24a may now be brought to lie on the axis of the work-coil, Fig. 4b, ready for heat treatment. By releasing the plungers 19 the crank-shaft may be rotated successively to the positions shown in Figs. 4c, 4d, the crank-pins 24b, 24c being heated in turn by the workcoil. The face-plates 16 may be adapted so that crankshafts having any number of throws may be treated.
Patent GB-1340459-A (GB)
Title: Seal assembly
IPC: F04B39/04
Filed: 1972-02-25
Abstract: 1340459 Seals DRESSER INDUSTRIES Inc 25 Feb 1972 [16 March 1971] 8805/72 Heading F2B Sealing means for a plunger 12 of a pump or compressor 10 comprises a seal assembly 22 housed in a groove 24 in the cylinder 14 and comprising (a) a tangent ring assembly 30 comprising arcuate members 50 having tangentially disposed mating end faces 52, 54 and having an inner periphery 38 which sealingly engages the plunger, a first end face having a counterbore 42 therein and a second end face 40 that sealingly engages a radial wall 26 of the groove, and (b) a radial ring assembly 32 fitted in the counterbore 42 and comprising arcuate members 60 having radially disposed end faces 62, 64 offset relative to the end faces 52, 54 of the tangent ring assembly, an inner periphery 48 which slidably engages the plunger and an end face sealingly engaging the end face 44 of the counterbore 42. The groove 24 is formed by recesses in spacers 18, 20 and the assembly 22 is urged radially inwards by a spring (36, Fig. 3), the assemblies 30 and 32 being interconnected by a pin 34. The radially disposed faces 62, 64 are spaced and the tangential faces 52, 54 terminate in spaced radially disposed faces 56, 58. In use, during the compression stroke of the plunger, the assembly 22 is urged to the right as shown in Fig. 1 and against the plunger by the pressure P. On the intake stroke, the assembly 22 moves to the left and pressure behind the assembly bleeds through the spaces between the end faces 62, 64 of the ring 30. In a particular application Fig. 4 (not shown), the seal assembly 22 is used in combination with other seal assemblies housed in separate grooves and comprising respectively a unitary sealing ring (66), a radial ring assembly (72) and a unitary sealing ring (76), and a radial ring assembly (80) and a tangential ring assembly (82).
Patent GB-627345-A (GB)
Title: Improvements in and relating to gas- or vapour-filled electric discharge lamps
IPC: H01J61/52
Filed: 1947-04-01
Abstract: 627,345. Electric incandescent lamps. GENERAL ELECTRIC CO., Ltd., BREADNER, R. L., and CLACK, B. N. April 1, 1947, No. 8817. [Class 39(ii)] [Also in Group XL(a)]  In a lamp of the kind provided with a window 18 sealed with wax over an aperture in the envelope the wall of the envelope near the aperture is formed double to provide a channel 14 for cooling fluid. The window may be of quartz, fluorite, mica, or sapphire, all these materials being difficult to fix to glass.
Patent GB-1033696-A (GB)
Title: Guanidine compounds
Inventor: AUGSTEIN JOACHIM
IPC: A61K31/155
Filed: 1964-03-03
Abstract: Novel guanidines of the formula <FORM:1033696/C2/1> (wherein each of R1, R2, R3, R4, R5, R6 and R7 is hydrogen or C1- 4 alkyl; n is zero, 1, 2, 3 or 4 and when n is 2 or more -(CH2)nis a straight or branched alkylene radical) and acid-addition salts thereof are prepared by reacting appropriate amino- or aminoalkyl - tetrahydronaphthalenes or salts thereof with cyanamides or dicyandiamides, with S-alkyl-isothiouronium salts, with salts of 1-amidino-3,5-dimethylpyrazole, or with guanidine salts. Examples are given.  2 - Aminomethyl - 7 - methyl - 1,2,3,4 - tetrahydronaphthalene hydrochloride is prepared by condensing ethylformate with 7-methyl-1-tetralone to give 2-hydroxymethylene-7-methyl-1-tetralone, reacting this with hydroxylamine hydrochloride to give an isoxazole derivative, allowing this to stand with sodium in methanol to give 2 - cyano - 7 - methyl - 1,2,3,4 - tetrahydronaphthalene and reducing this. The corresponding 4-methyl compounds are prepared similarly, and 2 - (3 - aminopropyl) - 1,2,3,4-tetrahydronaphthalene hydrochloride is also prepared by reduction of the corresponding nitrile.  2 - (2 - Aminoethyl) - 1,2,3,4 - tetrahydronaphthalene hydrochloride is prepared by forming the azide of 1,2,3,4 - tetrahydronaphthalene-2-b -propionic acid, converting this to 2-(2-isocyanatoethyl) - 1,2,3,4 - tetrahydronaphthalene and hydrolysing this.  The guanidines, which have anti-hypertensive properties, may be made up to pharmaceutical compositions such as tablets, capsules, elixirs, suspensions or solutions with suitable carriers and, when required, flavouring or colouring agents, or salts or glucose to make the solution isotonic.
Patent GB-594641-A (GB)
Title: Production of carbon black
IPC: C09C1/54
Filed: 1944-05-10
Abstract: <PICT:0594641/III/1> In a process for the production of carbon black by the dissociation of an endothermic hydrocarbon gas, e.g., acetylene, or acetylene containing up to 25 per cent. of ethylene, the gas is continuously introduced at super-atmospheric pressure into a retort A through an inlet 41, the rate of flow is adjusted to maintain the temperature at that required for dissociation, and carbon formed on and adhering to the inlet is mechanically removed. The diameter of the retort, the diameter of the inlet, and the rate of flow of gas may be so related as to produce a black of high "absorption and stiffness" value (measured by a test described). This black has a mean diameter of particle size of 43 mm , a resistivity of less than 0.045 ohms per cubic inch at 2000 lbs. per sq. inch pressure, and may be compressed without a substantial reduction in its "absorption and stiffness" value. It may be used as an absorbent for the electrolyte in dry cell batteries or as a filler for rubber or plastics.  Gas is introduced into the retort via a venturi meter 45 which measures and controls the flow.  The inlet 41 is surrounded by a cooling jacket and the inner end is kept free from carbon by a rotating scraping device, Fig. 2 (not shown), driven from a shaft 62.  The hydrogen formed is burnt at the outlet 21, and gases with the black in suspension are drawn off through the stack 30. Solid falling into the trough 71 is removed by a screw conveyer 70. In a modification, Fig. 4 (not shown), in which the hydrogen is collected, the conveyer is sloping, and is provided at its lower end with a water seal where the black collects, and at its upper end with an outlet for the hydrogen.
Patent GB-240379-A (GB)
Title: Water gate device
IPC: E02B7/36
Filed: 1925-04-03
Abstract: 240,379. M³ller, A. H. April 3, 1925. Sluice-gates; lock gates; movable weirs.-Hinged sluice-gates, lock-gates or weirs are provided with a fluid brake adapted in combination with an hydraulic accummulator to absorb the work done bv the water of the river or canal in opening the gate. The gate is preferably connected to the hydraulic cylinders forming the brake by toggle levers. The gates a, a, Fig. 1, which may be provided with buoyancy chambers, are hinged at the lower edges c. Links h are pivoted to the upper corners of the gates and to the long arms h<1> of bell-crank levers forming toggle mechanism and the short arms l of the bell-crank levers are connected through links n and piston rods m' to pistons working in hydraulic cylinders A, C, mounted on the walls of the w-ater-tvay. Pipes o, p, Fig. 2, lead from the ends of the cylinders A, B, and may be connected by a valve q to allow free circulation of the liquid and so permit the gate to be opened by the pressure of the water above the gate. By means of a four-way cock r, the accummulator E may be connected to the pipes o or p, in which case the liquid will compress the air in the vessel s or will be passed into the pipes p or o of the other gate to operate the latter. A pressure pump, or a cylinder of liquid air or of gas under high pressure may be provided to increase the available energy. A basin v, Fig. 1. separated from the lock chamber by a perforated wall T, may be provided to steady the flow of water into the lock chamber.
Patent GB-715507-A (GB)
Title: Improvements in tobacco pipes
IPC: A24F3/02
Filed: 1952-04-08
Abstract: 715,507. Tobacco pipes. ROBY, A April 8, 1952, Nc. 8902/52. Class 130 A tobacco pipe is provided with a cleaning member consisting of a spiral or helical strip 19 carried by a holder member 23 fixed in and rotatable with the mouthpiece 15, the strip 19 extending into the mouthpiece and right into the base of the bowl 14. The spiral strip 19 is screwed through a slot 27 in the holder 23 which has a knurled end 25 which is a press fit in a corresponding bore in the mouthpiece 15 and carries a joint washer 24 fitting between the mouthpiece and stem portions 15, 12. The strip 19 is provided with a hook 21 which prevents it falling out of the member 23, and rotation of the stem 15 causes the strip 19 to rotate and discharge any matter clogging the smoke bore 13 into the base of the bowl 14. The slot 27 is continued far enough along the member 23 to provide a smoke passage into the interior thereof.
Patent GB-339221-A (GB)
Title: Improvements in induction manifolds for internal combustion engines
IPC: F02M1/00
Filed: 1930-03-20
Abstract: 339,221. Morris, E. E., and Morris, T. E. March 20, 1930. Cylinders, pipes for.-To equalize the flow of mixture to all the cylinders of a multicylinder engine, the induction manifold has branches f which face the direction of flow, and have an area equal to the area of the passages leading to more remote cylinders, the main passage being enlarged at g<1> immediately in front of a dividing edge h.
Patent GB-164189-A (GB)
Title: Improvements in machines for finishing flooring and like timber
IPC: B24B7/28
Filed: 1920-03-26
Abstract: 164,189. Dittmar, E. C. March 26, 1920. Flat extended surfaces, surfacing and polishing; burnishing by compression.-In a machine for waxing varnished flooring or like timber, the varnish is burnished before being waxed by a series of glass burnishers 9 backed by rubber pads 10 and pressure-adjusting wedges 11. The flooring strips are fed on edge by rollers 3 operating as described in Specification 159,766, [Class 95, Paints &c.], and are supported against the burnishers by a series of rollers 5. A polisher is also provided consisting of a coiled strip of cloth or webbing mounted in a rotating disc carried by an adjustable slide. Specification 160,085 is referred to.
Patent GB-589953-A (GB)
Title: Improvements in or relating to electromechanical power transmission systems
IPC: H02P9/04
Filed: 1945-04-11
Abstract: 589,953. Transmitting mechanical power. GRANT, P., and RUSTON & HORNSBY, Ltd. April 11, 1945, No. 8939. [Class 3.8 (iv)] [Also in Group XXXVII] To prevent current flowing from one generator to another, or from the motor back to the generators, in an electromechanical power transmission system, such as a ship propulsion system, of the kind wherein several separately driven A.C. or D.C. generators supply in parallel a single motor, the motor is a D.C. machine and rectifiers, preferably of the controlled mercury arc type, are connected between the generators and their common bus-bars from which the motor supply is taken. Speed control of the motor may be effected by controlling the speed of'the prime movers, by regulation of the generator fields, or by control of the rectifiers, reversal of the motor being obtained by reversing its field, or by using inverted rectifiers to reverse the armature current. Overload protection of the generators, in case of breakdown on the D.C. side of the system, may be by grid control of the rectifiers. As shown, oil engines 1, 2 drive alternators 3, 4 which supply through rectifiers 5, 6 and isolating switches 10, 11, bus-bars 7, 8 to which are connected the armature 9 of a ship's propulsion motor. An auxiliary generator 13 supplies n.otor generator sets 14, 15 respectively, energizing the alternator and motor fields 18-20 through regulators 21, 22. A reversing switch 23 is included in the circuit of the motor field 20.
Patent GB-493050-A (GB)
Title: Improvements in or relating to methods of amplifying electrical signals
IPC: H03C1/54
Filed: 1937-03-30
Abstract: 493,050. Valve amplifying circuits. BAIRD TELEVISION, Ltd., and WILLANS, P. W. March 30, 1937, No. 8985. [Class 40 (v)] When signals are amplified by modulating them on to a carrier in a so-called balanced modulator, the condition of unbalance of the modulator is controlled by the amplitude of recurrent maxima or minima in the amplified signal. If the signal does not contain recurrent impulses normally present as synchronizing signals in television systems, they may be generated and mixed with the signals in any known manner. The signals containing the recurrent maxima or minima are modulated on to the carrier, which is supplied via transformer 10, in the balanced modulator arrangement shown. The valves 8, 9 are matched and any initial unbalance representing a carrier frequency output is obtained by adjustment of the manual control 11. The signals are supplied to the input of the valve 8. The modulated carrier is amplified at 3 and demodulated to obtain the amplified signals. These signals are rectified by circuit 5, 6, 7, which has a time constant such that the potential produced across 6 corresponds with the value of the recurrent maxima or minima. This potential is fed to valve 9 so as to control the condition of balance, upon which depends the value of the maxima or minima in the amplified signals.
Patent GB-609880-A (GB)
Title: Improvements in or relating to gear lever mechanism
IPC: F16H59/04
Filed: 1946-03-22
Abstract: 609,880. Controlling variable-speed gearing. BOYDELL & CO., Ltd., E., and COLDWELL, J. D. March 22, 1946, No. 8991. [Class 80 (ii)] In a control mechanism for distant actuation of a gear lever a requiring to be moved in two directions, a shaft e is slidably and rotatably mounted in a tube c carried by brackets d, and has secured to its ends an actuating lever f connected to the gear lever a and a short arm lever h connected to a hand lever j. The latter is pivoted on a pin k within a slot i in the lever h, the lower end of the lever j being engaged in a vertical slot in a guide plate m. A counter-balance weight n is preferably fitted to the hand lever j. Movement of the hand lever in a vertical plane rotates the shaft e and moves the gear lever a backwards or forwards; lateral movement of the hand lever causes corresponding movement of the gear lever a.
Patent GB-125953-A (GB)
Title: Improvements in and relating to Electric Time Indicating Apparatus.
Inventor: WARREN HENRY ELLIS
IPC: G04C15/00
Filed: 1919-04-09
Abstract: 125,953. Warren, H. E. April 15, 1918, [Convention date]. Differential speed indicators.-In a time-indicating apparatus a hand concentric with a hand driven by a mechanical clock is driven by a synchronous motor geared down to give the same speed with a certain frequency of alternation. Any difference in the time indication of the two hands affords a basis for adjusting the speed of the dynamos to eliminate the difference. The error and rate of the clock observed under signal are from time to time corrected by adjustment of a magnetic field affecting the pendulum. The arbor of the escape wheel 13, Fig. 1, being geared by a pinion 23 and wheel 24 to a lateral arbor 34, a hand 26 on the cannon travels round a dial a once in five minutes and the lateral arbor carrying a companion hand 35 is driven by the synchronous motor 27 through intermediate wheels 31, 32. The bob 10, Fig. 3, of the pendulum 11 is furnished with a steel magnet 50 and the acceleration of gravity is assisted or opposed by either of two electro-magnets 51, 52. A battery of a few cells 53 applies a constant potential across the terminals of two potentiometers 54 and 55 having contacts 56, 57 movable to any point of the intervening resistances 60, 61. Both electro-magnets are connected bv the wire 68 to the middle of the battery and each is connected to the movable contact of one of the potentiometers. One electromagnet is always in circuit (without current if the rate of the clock is nil) to regulate the rate; the other is put into circuit by a key 66 to wipe out the error by special acceleration or retardation during a portion of the day, the circuit being automatically broken. Specification 125,766 [Class 139, Watches &c.], is referred to.