baber/WOPTO huggingface dataset:
Patent GB-908468-A (GB)
Title: Improvements relating to conveying equipment for mines
Inventor: DUNCAN ANGUS WELLESLEY
IPC: E21F13/08
Filed: 1957-11-22
Abstract: 908,468. Endless conveyers. MINING ENGINEERING CO. Ltd. Feb. 23, 1959 [Nov. 22, 1957 (2)], Nos. 36405/57 and 36406/57. Class 78 (1). The driving unit of a mine face conveyer comprises a motor 10, fluid coupling 12 and gear-box 13 mounted on a frame on each side of the conveyer and is provided with openings 17, 18, 19 between the frames and the conveyer side-plates to accommodate roof supports within the plan area of the unit. The roof supporting system comprises pairs of girders 22, 22a and 23, 23a set against the roof and supported by props 26 and girders 25 and props comprising hydraulic rams 28 and bars 29 extending through the openings 17, 18, 19.
Patent GB-302241-A (GB)
Title: Means for regulating the flow of a flowing medium
IPC: G05D7/03
Filed: 1928-12-11
Abstract: 302,241. Siemens - - Schuckertwerke Akt.-Ges. Dec. 12, 1927, [Convention date]. Feedwater, controlling.-Feedwater is supplied to a manifold 3 by a pump 1 driven by an electric motor controlled by the pressure in the manifold acting through a spring loaded diaphragm 25, servo-motor 28 and resistance 29. The boiler comprises a series of pipes arranged in parallel and the entrance of feedwater to each pipe is controlled by a valve 12 controlled by the pressures on each side of a throttling disc 11 arranged in the pipes near their entrance to the steam collector 10. The valves are actuated by oil pressure acting on pistons 13 under the control of auxiliary valves 20 connected to floating levers 18 coupled to the pistons 13 and to the spring loaded control diaphragms 15. A modification is described in which the valves are further controlled bv the pressures on opposite sides of an apertured pla.te arranged near the entrance to the pipes, and in a further modification the control pressures act directly on the main piston.
Patent GB-343209-A (GB)
Title: Improvements in and relating to induction regulators
IPC: H01F29/12
Filed: 1929-11-30
Abstract: 343,209. Transformers. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Allgemeine Elekricitõts-Ges.; 2, Friedrich Karl Ufer, Berlin.) Nov. 30, 1929, No. 36774. Convention date, Nov. 30, 1928. [Class 38 (ii).] The primary and secondary windings of a single or polyphase induction regulator are both distributed over the stator and rotor core in such manner that voltage regulation may be effected without phase variation. Figs. 1 and 5 show two alternative arrangements in which the stator parts of the primaries are marked U1 V1, W1, the stator parts of the secondaries are marked U2, V2, W2, and the rotor windings which are common to the primary and secondary circuits are marked U0, V0, W0. In the arrangement as shown in Fig. 5, the inductive coupling between the two sets of stator windings is effected through three auxiliary single-phase transformers, but a single three-phase transformer may be used for this purpose. Fig. 7 shows a further arrangement in which the stator windings are divided into two parts S1, S2, 90‹ apart on the core, the windings R1, R2 being similarly spaced on the rotor. The numbers of turns on the stator and rotor windings may be made slightly different if a slight phase shift is required with voltage regulation.
Patent GB-1003030-A (GB)
Title: Improvements in or relating to dielectric heating equipment
Inventor: TIBBS CHRISTOPHER EVAN MUNDELL
IPC: H05B6/60
Filed: 1960-10-26
Abstract: 1,003,030. Dielectric heating oven. RADYNE Ltd. & DUNLOP RUBBER CO. Ltd. Jan. 26, 1962 [Oct. 26, 1960], No. 36787/60. Heading H5H. A dielectric heating oven, applicable to the thawing of bales of frozen rubber, includes within the oven shell a pair of electrodes, of which the lower one supports the rubber bale and can be raised towards the upper electrode to clamp the bale therebetween, the electrodes in the latter position being electrically balanced with respect to the oven shell. A timer controls the intermittent movement of the conveyor 21 to carry a bale of rubber 23 sequentially from one oven to another, and finally past a softness measuring probe, and at each oven causas a ram 22 to raise the fork-shaped electrode 20 to press the bale against the upper, hinged electrode 24, 25, as shown, for a desired period, and connects the high-frequency supply to the electrodes for that period. Leads 26 connect the lower electrode to the earthed walls of the oven, and are of such impedance that the electrodes are roughly balanced with respect to the oven walls, between which and the electrodes a conductive screen may be mounted. Specifications 877,014, 882,441, 909,805 and 966,673 are referred to.
Patent GB-1416636-A (GB)
Title: Driving arrangement for an electrically propelled vehicle
IPC: B60L15/04
Filed: 1973-08-02
Abstract: 1416636 Controlling D.C. motors DEUTSCHE AUTOMOBIL GmbH 2 Aug 1973 [2 Aug 1972] 36817/73 Heading H2J In or for a vehicle, a driving arrangement has an hydraulic torque converter, permitting regenerative braking, driven by an electric motor 6, a battery 1, 2 switched between partial and full voltage by means of a switch 3, controlled by an electronic unit 8 in response to motor speed and to operation of accelerator and brake pedals 9, 10, electronic unit 8 also controlling the excitation of field 7 of the motor 6. As described, the unipolar motor 6 drives the impeller wheel 12 of the hydro-dynamic converter, the turbine wheel of which drives the shaft 14. The converter has a guide wheel 17 for increasing the torque which is reacted by a freewheel device 18 against the housing of the converter. A further device 19 renders it impossible for the output speed to exceed the input speed and thus provides regenerative braking. Switch 3 is initially open so that batteries 1, 2 are in parallel via diodes 4, 5 and chokes (not shown). The fully excited motor thus runs at half its nominal speed and no drive is transmitted by the converter 12, 13. When the accelerator pedal 9 is depressed, the excitation of field 7 is reduced, increasing the speed of motor 6 so that the vehicle is put into motion. When the speed reaches its nominal value, switch 3 is automatically closed connecting batteries 1, 2 in series, while the excitation current is doubled so as to avoid a sudden increase in torque. Further depression of accelerator pedal 9 gives reduction in excitation and further increase in speed. Braking.-When the brake pedal 10 is actuated, control unit 8 increases the excitation so that the motor operates as a generator and charges the batteries 1, 2 in series. This regenerative braking is only possible down to the nominal speed at which the batteries 1, 2 become connected in parallel by opening switch 3. Mechanical brakes are included.
Patent GB-951572-A (GB)
Title: Method for masterbatching carbon black and synthetic rubber
IPC: C08J3/215
Filed: 1962-09-28
Abstract: Carbon black and synthetic rubber are masterbatched by dispersing carbon black in water in an amount less than that which will produce a stiff paste, mixing the resulting black dispersion with a solution of synthetic rubber in a liquid which is a solvent for the rubber but not for the black and stripping the rubber solvent from the mixture. Specified rubbers are cis 1-4 and trans 1-4 polybutadienes and polyisoprenes while the water may contain a dispersant and the mixture a plasticizer or extender oil. Specified solvents are pentane, hexane, isooctane, cyclohexane, methylcyclohexane, benzene and toluene. Apparatus for carrying out the process is described. Specifications 851,893 and 909,066 are referred to.
Patent GB-303476-A (GB)
IPC: H01J40/06
Filed: 1928-12-13
Abstract: 303,476. British Thomson-Houston Co., Ltd., (Assignees of Bainbridge, K. T.). Jan. 4, 1928, [Convention date]. Vacuum tubes.-A photoelectric cell has a light-sensitive electrode consisting of a foundation metal such as silver, copper, nickel, tungsten, or barium, having an oxygen-containing layer on its surface and coated with a monatomic layer of caesium or other alkali or alkaline earth metal, the cell containing no free alkali &c. metal. A silver bead, attached to a filament 4, is vaporized by passage of current through the filament and deposited on the envelope. An anode in the form of a disc 6 prevents deposition in one direction so as to provide a window 5. A mica or quartz washer 7 mounted on the filament-supports prevents deposition on the neck. The silver coating is oxidized by admitting oxygen to a pressure of 100 microns of mercury, and applying a spark coil so as to produce a discharge, or heating the envelope in an exhaust oven to 360‹C for a few minutes. Excess oxygen is pumped out and caesium, rubidium, potassium, or calcium is distilled into the envelope by heating the metal in capillary tubes 9, secured to a metal disc 11 by straps 12. Excess alkali &c. metal is removed by connecting the envelope with an exhaust pump and heating to 300‹ C. for a period of time varying from a few minutes to two hours and depending on the amount of alkali metal present. When barium is used as the light-sensitive metal, the envelope is made of quartz, and is heated to 700‹ C. Specifications 302,315 and 306,996 are referred to.
Patent GB-1102043-A (GB)
Title: Phenothiazine salts
IPC: C07D279/18
Filed: 1966-08-17
Abstract: A neutral acid salt of N-[g -(41-methylpiperazinyl - 11 - propyl] - 3 - butyryl phenothiazine is prepared from a neutral alkali metal mucate and a neutral salt of the phenothiazine.  Pharmaceutical compositions suitable for oral or parenteral administration comprises the neutral salt and a carrier therefor.  Reference has been directed by the Comptroller to Specification 830,012.
Patent GB-799067-A (GB)
Title: Improvements in or relating to organosilicon derivatives
IPC: C07F17/02
Filed: 1956-12-03
Abstract: A lubricating composition comprises an organo-polysiloxane of the unit formula RnSiO 4-n/2 in which R is a monovalent hydrocarbon or halogenated hydrocarbon radical and n is 1, 2 or 3, and from 0.01 to per cent by weight of a 1,11 - bis - (trialkylsilyl) ferrocene in which the alkyl radicals contain less than 6 carbon atoms per radical.  Examples illustrate the stabilizing of liquid trimethyl end-blocked dimethylpolysiloxane, diethylsiloxane, and copolymers of dimethylsiloxane with a ,a ,a -trifluorotolylmethylsiloxane, with 1,11-bis-(trimethylsilyl)-, 1,11 - bis - (tripropylsilyl) -, 1,11 - bis - (ethyldimethylsilyl)- and 1-trimethylsilyl-11-triethylsilyl-ferrocene.ALSO:The invention comprises the compounds 1,11-bis-(trialkylsilyl) ferrocenes in which the alkyl groups contain less than 6 carbon atoms, and also stabilized organosiloxanes containing 0.01 to 3 per cent by weight of these compounds.  They may be prepared by reacting disodioferrocene with the trialkyl chlorosilane, preferably in an inert solvent such as petroleum ether.  The siloxanes which may be stabilized are those having the general unit formula <FORM:0799067/IV (a)/1> where R is a monovalent hydrocarbon or halogenated hydrocarbon radical and n is from 1 to 3, and they may be liquids, resins or elastomers.  The examples describe the preparation of 1,11-bis - (trimethylsilyl), (tripropylsilyl) - and (ethyldimethylsilyl) - ferrocenes and 1 - trimethylsilyl - 11 - triethylsilyl ferrocene; and the trimethyl derivative is used for stabilizing a liquid trimethyl end-blocked dimethylpolysiloxane, a liquid diethylsiloxane, methylvinyl siloxane elastomers, methylphenylsiloxane resins and liquid copolymers of dimethylsiloxane and a ,a ,a -trifluorotolylmethylsiloxane.
Patent GB-1383567-A (GB)
Title: Hydraulic circuit for controlling an engine and a main clutch of  a motor vehicle transmission
IPC: F16D48/02
Filed: 1972-08-08
Abstract: 1383567 Change-speed control ZAHNRADFABRIK FRIEDRICHSHAFEN AG 8 Aug 1972 [19 Aug 1971] 36964/72 Heading F2D In a fluid pressure operated coincidental control for a main clutch and engine accelerator disconnector in a gear-shift system on a motor vehicle, to ensure that the main clutch remains released and the accelerator disconnected until a synchronized gear shift has been positively completed, clutch release and accelerator disconnection cylinders 10, 11 and a piston 7 loading a pressure regulator 3, are simultaneously pressurized from a pump line 2 through a first release valve 6, shifted by a control linkage (not described) from a central neutral position A to an active position B or C on either side, in which it supplies pumped pressure 2 to the cylinders, and there is a second release valve 12, moved left to position B by pump pressure 2, acting at 13, to pressure a line 15, which ensures continuation of pressure feed to the clutch and accelerator cylinders 10, 11 and regulator load piston 7, even though the first release valve 6 may have been prematurely returned to neutral A, until the second release valve 12 is mechanically returned to position A, against pump pressure at 13, by a cam bar 16 actuated mechanically through a linkage (not described) by the gear shift control on completion of positive engagement of the new ratio.
Patent GB-1200297-A (GB)
Title: Improvements in or relating to apparatus for digitizing analogue signals
Inventor: WOLFENDALE PETER CALEB FREDERI
IPC: H03M1/00
Filed: 1966-08-18
Abstract: 1200297 Measuring electrically P C F WOLFENDALE 16 Aug 1967 [18 Aug 1966 (2)] 37059/66 and 37060/66 Headings G4H G4H1C 3F 3G 4B 4D 4E 5A 6B 6D 6F 7A3 7B 7F 13B 14A 14B and 23C An analogue amplitude signal at the slider of a potentiometer representing displacement is digitized by determining the time taken for a ramp voltage to reach the signal value by counting clock pulses. As shown Fig. 2, a capacitive potentiometer 12 comprises two stator electrodes fed with A.C. from a supply 14 and transformer 13, the position of the movable electrode determining its potential relative to the centre top of the secondary winding of transformer 13. This potential difference is augmented by a ramp-modulated voltage formed by amplitude modulating the supply voltage 14 with a saw tooth voltage from generator 16. Thus, when the movable electrode is displaced to produce an A.C. voltage out of phase with the reference voltage, the input to amplifier 17 changes phase in each saw tooth at a time determined by the extent of the displacement. The start of each saw tooth initiates a counter 19 to count pulses from a clock pulse generator 20, and when the input to amplifier 17 changes phase a further pulse is produced which stops the counter 19. In further embodiments:- (1) the stator of potentiometer 12 comprises a plurality of electrodes connected to consecutive tappings and transformer Fig. 4 (not shown): (2) the stator electrodes are fed with coded potentials from a number of transformers energized sequentially Fig. 5 (not shown), to determine firstly which two stator electrodes the movable electrode is facing, and secondly its exact position relative to these two electrodes. (3) the capacitive potentiometer 12 is replaced by a two-winding inductive potentiometer Fig. 3 (not shown): (4) a plurality of inductive stator elements are used, fed with coded potentials as (2) above Figs. 6, 7 (not shown).
Patent GB-645127-A (GB)
Title: Improvements in and relating to combined waxers and polishers
IPC: A47L13/48
Filed: 1946-12-18
Abstract: 645,127. Waxing and polishing devices; handles. LEE, W. H. Dec. 18,1946, No. 37230. [Classes 19 and 61(i)] A waxer and polisher comprises a waxing element adapted to removably receive a polishing element, a handle and mounting means for removably mounting said handle which enables it to freely rotate about two axes, one being perpendicular to the other to simulate wrist and forearm action in use, said mounting means comprising a mounting member fastened to the waxing element and extending upwardly in the form of tongues which have co-axial bores therethrough disposed at right angles to the longitudinal axis of said element, a shaft slidably mounted in said bores and having a portion of reduced diameter disposed between said tongues, spring means extending from the waxing element and designed to engage- 'said reduced portion to hold the shaft in the bores, the spring means being depressible to allow removal of the shaft from the bores, one end of the shaft being swingably connected to the handle. As shown, the waxer comprises a body blank 10 having mounted thereon a forming member 12 and enclosed in a suitable cloth material 15, a mounting member 18 is fastened to the enclosed body blank by means of screws passing through amounting plate 17. A shaft 23 is accomodated in the axial bores 22 in the tongues 21 of the mounting member 18. Co-operating springs 30 and 31 secured between mounting member 18 and plate 17 engage the shaft in the reduced portion 25, disengagement being effected by depressing 32, an enlarged end of the shaft carries a swingable screw member 28 to which the handle is secured. For polishing, a cloth 35 having extending side and end portions is clamped to the waxer by clamping means 36 whose arms clamp said cloth portions in under-cut sides of the forming member 12 of the body blank 10. In place of the cloth, there may be used a steel wool pad (not shown). A housing member (not shown) which takes the form of a box with an orifice accomodating the mounting member is provided to cover the unit and prevent marring of marginal trimmings of the floor surface. The waxer may be stored in a holder 34, adapted to be supported on a wall and reduce hardening of the wax during storage, which is designed to slidably receive the waxer.
Patent GB-1429879-A (GB)
Title: Method and a device for continuously measuring a flow of material
IPC: G01F1/30
Filed: 1974-08-23
Abstract: 1429879 Measuring mass flow-rate C O JONKERS 23 Aug 1974 [3 Sept 1973] 37283/74 Heading G1R The mass flow-rate of a fluent solid is measured by discharging the material from a conveyer 1 with a predetermined velocity component u in a horizontal direction allowing the material to impact with an impact sensor 3 which reduces the velocity component in the horizontal direction to zero, and measuring the force applied by the material to the impact sensor in the horizontal direction. In Fig. 1, the impact sensor is a box 3 having vertical baffle plates 4 whereby the material is discharged vertically. Box 3 is mounted by means of springs 5 and the horizontal force applied to the box by the material is measured at 6. In Fig. 2 an alternative impact sensor comprises a box 3 having horizontal apertured plates or grids 7 whereby the material is discharged vertically. In the alternative impact sensor of Fig. 3, the material enters the sensor via window 2 so that the horizontal velocity component u is at right angles to the plane of The Figure, and leaves the sensor via chute 9. In Fig. 4, the material is discharged from conveyer 1 on to a second conveyer 10 at right angles. Conveyer 10, and a deflector plate 11 are mounted for lateral movement by springs 5 and a device 6 measures the lateral force, applied to the conveyer 10 by the material.
Patent GB-622146-A (GB)
Title: Improvements in or relating to the production of insecticides
IPC: A01N65/12
Filed: 1946-12-18
Abstract: An insecticidal composition free from unwanted resinous materials is prepared by extracting pyrethrum plants with a solvent and treating the resulting extract with an adsorbent solid to remove the resinous constituents.  Suitable adsorbents are Fuller's earth, carbon, diatomite or bentonite, either activated or non-activated, or a mixture of two or more of these materials. The primary pyrethrum extract may consist of a solution of pyrethrums and oleo resins in petroleum ether.  The final resin-free extract after concentration by distillation may be diluted with a solvent such as kerosene to form a spraying-solution.  The spent adsorbent solid may be dried and mixed with an extender such as pyrophyllite to form a horticultural dust.
Patent GB-817503-A (GB)
Title: Improvements in or relating to metal vapour electric arc converters
Inventor: HOLLIDAY JOHN HUBERT
IPC: H01J13/02
Filed: 1955-12-30
Abstract: 817,503. Metal-vapour converters. GENERAL ELECTRIC CO. Ltd. Dec. 31, 1956 [Dec. 30, 1955], No. 37499/55. Drawings to Specification. Class 39(1). The Specification repeats subject matter contained in Specification 817,504. The claims are directed to the auxiliary anode arrangement. Specifications 810,387, 817,501, 817,505 and 817,506 also are referred to.
Patent GB-1321500-A (GB)
Title: Supply apparatus for a continuous workpiece
IPC: B21F1/02
Filed: 1971-08-10
Abstract: 1321500 Straightening MALMEDIE & CO MASCHINENFABRIK GmbH 10 Aug 1971 [25 Nov 1970] 37525/71 Heading B3E Wire 3 is fed from a drawing drum 2 to a machine 5 e.g. a wire-peeling machine by passing the wire through a pair of driving rolls 12, 12a and straightening rolls 16, 17 & 18, the driving and straightening rolls being mounted on a common frame 21 which is pivotable about an axis 12b extending parallel to the rotational axis of the drum. In operation the leading end of the wire is passed through a drawing die 4 and wound on to the drum 2. When 10-20 turns of wire have collected on the drum, the leading end of the wire is fed past a roller 10 and vertical guide rolls 11, where upon the drum is stopped and the frame 21 pivotally adjusted until the wire can be manually inserted between the rolls 12, 12a. The upper roll 12a is then pressed against the wire and the drive of the rolls started so that the wire is fed into the gap between straightening rolls 15, 17 and 18 whereupon the roll 18 is pressed against the wire. As the wire is moved towards the wire peeling machine 5, the frame 21 is pivoted into the horizontal position so that the wire is fed between driving rolls of the machine 5, the roll 12a being lifted as soon the wire is gripped by the driving rolls of the machine.
Patent GB-1300159-A (GB)
Title: Improvements in and relating to ultrasonic devices for use in measuring temperature
Inventor: BARON JEAN
IPC: G01K11/22
Filed: 1970-08-04
Abstract: 1300159 Ultrasonic temperature measuremerit COMMISSARIAT A L'ENERGIE ATOMIQUE 4 Aug 1970 [18 Aug 1969] 37573/70 Heading H4D Signals from piezo-electric transducer are coupled to a waveguide and impringe on a mirror which focuses them on to a reflector, the end of the waveguide, mirror and reflector being immersed in a fluid, and reflections are passed back via the transducer and a changeover switch to a receiver wherein deviations in the echo transit time indicate changes in temperature of the fluid. A probe for measuring the temperature of liquid sodium coolant 5 in a reactor comprises a stainless steel rod passing through the seal plug 6 and fixed to the core casing 12 and which is terminated in a cylinder 8 which directs acoustic energy from transducer 1 on to reflector 9 via mirror 7. Due to the difference in acoustic impedance between the rod 2 and liquid 5, multiple reflections occur. The transit time of n echoes is found by counting clock pulses passed by a gate which is opened by the first received pulse and closed by the nth (detected by a preset counter). The clock pulse counter output is read out to memory and display devices and an alarm is actuated if the temperature deviation is excessive. To avoid turbulence across the measuring path, a wedge deflector is provided at the base of an opentopped duct 14 to provide steady flow.