baber/WOPTO huggingface dataset:
Patent GB-1153365-A (GB)
Title: Improvements relating to Electrical Filter Arrangements.
Inventor: GALPIN ROBERT KEITH PORTWAY
IPC: H04J1/08
Filed: 1967-04-19
Abstract: 1,153,365. Frequency changing filter systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 2 April, 1968 [19 April, 1967], No. 17980/67. Heading H3F. In a filter system of the type in which a signal is frequency translated to a lower frequency, filtered and then reconverted back to its original frequency band, the lower frequency path comprises two parallel channels with phase quadrature signals. The input signal spectrum fx is first filtered at F1 to band limit it, and then mixed at M1 with a signal of frequency fc = fs + fi when fs is frequency of interest in the signal fx and fi is an intermediate frequency. The resulting sideband nearest the frequency fi is extracted from filter F2 and is fed in parallel to two modulators M2, M3, to which are also fed phase quadrature signals at a frequency fi. The lower sidebands of the output signals from these modulators are selected by filters F3, F4 and are fed to further modulators M4, M5 which are also fed with quadrature signals at frequency fi. The outputs from these two modulators are added, and the sideband nearest to fi is selected by filter F5 and mixed in M6 with the signal at frequency fc to reconvert back to the original frequency band. The signal fc is obtained by modulating fi and fs in a quadrature type single sideband modulator (M7, M8) and the quadrature fi signals are derived by means of bi-stable circuits (BS1, BS2, BS3), Fig. 2 (not shown).
Patent GB-1405834-A (GB)
Title: Electrical loss-dependent thermal simulator circuit of an electrical operating means
IPC: H02H6/00
Filed: 1973-04-13
Abstract: 1405834 Simulating thermal properties SPRECHER & SCHUH AG 13 April 1973 [22 Aug 1972] 18011/73 Heading G4G A network for simulating the thermal behaviour of an electrical device having (copper) windings and (iron) magnetic circuits, e.g. a motor or transformer, comprises two RC circuits for respectively simulating the heat accumulation in the copper and iron parts and a switchable circuit for increasing the time constants of the RC circuits to simulate different operating conditions. As shown, circuit R 1 C 1  simulates heating of the windings, and R 2 C 2  heating of the stator, of an electric motor. In order to avoid high values of resistance and to provide a measure of adjustment, the charging current, supplied at terminal K 1 , is chopped by switch Tr 1  controlled by a clock. The voltage at terminal K 3  represents the total heat accumulation, and heat losses from the stator iron may be simulated by resistors R 9 , R 10  connected between K 3  and output terminal K 9 . In order to simulate thermal behaviour of the motor when it is stationary, it is necessary to increase the virtual time constants of the RC circuits. For this purpose, the input of an impedance converter is connected to terminal K 1  whereby the output of the converter will be equal or proportional to the voltage on capacitor C 1  (and approximately equal to that on C 2 ). A proportion of this output voltage as determined by potentiometer R 6  is selectively applied via switch Tr 2  to the terminal K 3  and this has the same effect as an increase in time constants. Similarly feedback (unswitched) from-potentiometers R 7 , R 8  to the tails of the capacitors C 1 , C 2  enables the circuit to simulate different types of motor without altering the resistors R 1 , R 2 . In the modification shown in Fig. 3, simulation of a stationary motor is obtained by switching in the negative-resistance circuit shown.
Patent GB-1096790-A (GB)
Title: Electrode position control device for electrode furnaces
IPC: H05B7/148
Filed: 1965-04-29
Abstract: 1,096,790. Automatic control of electrode furnaces. ALLMANNA SVENSKA ELEKTRISKA A.B. April 29, 1965 [April 30, 1964], No. 18018/65. Heading G3R. A system for automatically controlling the position of the electrodes of a furnace includes an integrating device which is rendered inoperative during the periods whilst the electrodes are being moved, the use of an integrating device ensuring against unnecessary control of the electrode positions. A signal proportional to electrode current is compared with a reference value and the resulting signal is fed to an amplifier over a phase sensitive blocking device which introduces a dead band into the control. The signal fed to the amplifier is integrated by a device comprising resistors and capacitors. When the integrated voltage reaches a value set by a limiting device connected to the output of the amplifier one or other of two complementary transistors is rendered conductive thereby disabling the integrating device with the result that the amplifier instantaneously reaches maximum output. The output of the amplifier, by way of a second pair of complementary transistors, energizes one or other of a pair of relays which are operative to move the electrodes up or down to restore the electrode current to the normal value. The relays have contacts which short circuit the blocking device connected to the amplifier input and further contacts which cause a further relay to render the integrating device inoperative. The further relay also renders the integrating device inoperative when adjustment of the system is made.
Patent GB-602033-A (GB)
Title: Improvements in or relating to combined television and sound systems
IPC: H04N5/08
Filed: 1945-07-14
Abstract: 602,033. Television. LORD, A. V., and PYE, Ltd. July 14, 1945, No. 18056. [Class 40 (iii)] [Also in Group XL (c)] In a receiver for combined sound and television signals in which the sound pulses occur during the line synchronizing periods and have an amplitude less than that of the picture intelligence, means are provided for generating a series of auxiliary pulses at line repetition frequency and for mixing these pulses with the incoming waveform to produce a resultant waveform having the incoming sound pulses standing on the top edges of the auxiliary pulses, the amplitude of these latter pulses being such that they raise the peaks of the sound pulses above the peak potential of the picture intelligence. The incoming waveform,Fig. 1 (a), is fed, after inversion, to one grid of a twin triode valve V1 (Fig. 2) which preferably operates with zero bias and a long grid' time constant. Auxiliary pulses, Fig. 1 (b), derived from the line time-base generator are fed, in negative phase, to the other grid of V1 via C3. The output of V1, which is similar to Fig. 1 (c) except that the picture intelligence is suppressed, is applied to a valve V2 which operates with zero grid bias and with a long time constant grid circuit. The condenser C1 is charged to a negative potential, with respect to earth, equal to the peak amplitude of the applied waveform and V2 conducts only during the sound pulse peaks so that these peaks appear in the output circuit. The sound pulses are then fed to the audio output stage of the receiver. Specification 564,511 and U.S.A. Specification 2,268,001 are referred to.
Patent GB-941425-A (GB)
Title: Water dispersed coating compositions
IPC: C09D191/00
Filed: 1960-05-23
Abstract: A water-dispersed coating comprises a neutralized adduct of a drying or semi-drying oil and an a -b  unsaturated dicarboxylic acid, and a second resinous component which is (a) a styrene-conjugated diolefin copolymer, (b) a water-soluble aminoplast, or (c) a watersoluble epoxy resin (see Division C3 Abridgment for details).  In Example V, an aqueous solution of a linseed oil-maloic anhydride adduct neutralized with ammonia and 2-methyl-2-amino-1,3-propane diol is mixed with TiO2 (motile), lamp black, talc, barytes, strontium chromate, a suspending agent (Ben-A-Gel RTM), an anti-foaming colloid, and more water.  After grinding, there is added a mixture of butadienestyrene latex, ammonia, more of the oil-anhydride adduct, manganese naphthanate, pine oil, wetting agents, and water.  More water was then added and films formed from the composition on phosphatized metal were baked for 15 minutes at 180  DEG F. and a further 15 minutes at 350  DEG F.  In Example VI, the same oil-anhydride adduct as in V was mixed with rutile, lamp black, strontium chromate, barytes, aluminium silicate, water and suspending agent.  After grinding, more of the adduct was added together with a water-soluble methylated methylol melamine, hexylene glycol, isopropyl alcohol, and more water.  The composition was reduced with water and applied to bare or phosphatized metal by spraying or dipping, followed by baking as in Example V.  The coating finds use as dip primers for car p  bodies, shop coat primers, one coat primers, and small part finishes.  In Example VII, a blend of epoxide resin or urea-formaldehyde resin with the same oil adduct as in Example V, in the ratio 10 : 90 or 20 : 80, was drawn down as a thin film on bare metal and baked as in Example V.
Patent GB-402507-A (GB)
Title: Improvements in electric couplings
IPC: H01R27/00
Filed: 1932-06-28
Abstract: 402,507. Plug couplings. SEVER, W., Armadale, King's Road, Bramhope, Leeds. June 28, 1932, No. 18204. [Class 38 (i).] The pins 7, 9 are furnished with removable sleeves 11, 12 that increase the diameter of the pins to a variable extent to fit different sockets. The sleeves are preferable slit and are formed with flanges at the base whereby they are clamped when a cover 2 is secured to the body 1 by a screw 6. The pins are mounted in separate discs 8, 10, each slotted to fit over a boss 4 and over the other pin, so as to allow adjustment of the pitch of the pins. The invention maybe applied to round or other shaped contact pins.
Patent GB-483532-A (GB)
Title: Improvements in resilient joints or couplings formed of rubber-metal parts
IPC: F16D3/68
Filed: 1937-07-01
Abstract: 483,532. Universal joints. GOLDSCHMIDT, M. July 1, 1937, No. 18286. Convention date, July 1, 1936. [Class 80 (ii)] Axial ribs 3, 4, projecting alternately from coupling-flanges 1, 2, fit into sheet-metal liners 8, in a rubber ring 5, and secured by bolts 9 to the respective flanges. An additional lining 10, of thin rubber, may be vulcanized in the metal liners 8. The rubber 5 is free to change its shape in four lateral directions.
Patent GB-457887-A (GB)
Title: Improvements in or relating to heel pads for boots and shoes
IPC: A43B21/06
Filed: 1935-06-26
Abstract: 457,887. Rubber heel-pads. HERPE, A., Strand Palace Hotel, London.-(Herpe, M.; 22, Rue Poliveau, Paris) June 26, 1935, No. 18292. [Class 17 (iii)] Tread-pieces or pads for attachment by cement to the heels of shoes, are cut from a sheet of rubber a which is coated on one side b with celluloid in liquid form. The pad is rendered concave on the celluloid-coated face c during or after cutting out, for example by stamping. The rubber sheet may be roughened if desired before the celluloid coating is applied. After attachment by cement, a few brads may be driven to reinforce the connection of the lift to the heels.
Patent GB-879995-A (GB)
Title: A process for the production of artificial threads, bands, films and like products from viscose
IPC: H01H67/22
Filed: 1959-05-29
Abstract: 879,995. Artificial filaments, films &c. ALGEMENE KUNSTZIJDE UNIE N.V. May 29, 1959 [June 2, 1958], No. 18297/59. Addition to 871,334. Class 2(2). Artificial threads, bands, films and like products are made by spinning viscose containing 1 %-6 % by weight (based on the cellulose in the viscose) of at least one cation-active compound with the formula: in which R 1  is an alkyl, aryl or alicyclic radical, preferably containing at least 6 carbon atoms, R 2  is an alkyl radical with 1-3 carbon atoms, n is a whole number of 2-5, x and y are each whole numbers, the sum of x+y preferably being 2-50, and Z is an anion having substantially no surface activity, the viscose having an ammonium chloride number of at least 13, into a spinning bath containing a maximum of 7% by weight of sulphuric acid, at least 2 % by weight of zinc sulphate and at least 0À04% by weight of at least one compound with the formula: in which R 3  is an aliphatic chain with at least 8 carbon atoms, n is 2, 3 or 4 and x and y are whole numbers, the sum of x+ y being at least 5, and then drawing the products. The cationactive compound is preferably injected into the viscose and thoroughly mixed therewith immediately prior to spinning. The spinning bath, which preferably has a temperature of 47 ‹-57 ‹C., may also contain 10%-25 % by weight of sodium sulphate. The spun products may be stretched in the spinning bath or in a second bath of elevated temperature containing dilute sulphuric acid, to which salts, e.g. sodium sulphate, magnesium sulphate and/or zinc sulphate, may be added.
Patent GB-1114631-A (GB)
Title: Machine for cutting material
IPC: B23D59/00
Filed: 1966-04-26
Abstract: 1,114,631. Cutting apparatus. CINCINNATI MILLING MACHINE CO. 26 April 1966 [12 May, 1965], No. 18301/66. Heading B4B. A machine for cutting material, such as cloth, supported thereon comprises an endless cutting blade 56 carried by two spaced pulleys 49, 50 and extending between the pulleys in two paths of travel which are located close together at a point between the pulleys. The pulleys are mounted on a carriage 12 having a motor 13 connected by gearing 15, 16 to a shaft 17 on which are gears 18 engaging racks 19 on a frame 10 whereby the carriage is movable along ways 11 on the frame. The carriage supports two upper rollers 25, 26, Fig. 1, and two lower rollers 27, 28 and a flexible belt 29 having its ends secured to the frame is threaded through the rollers. Two shelves denning a gap therebetween are mounted adjacent the upper rollers, the cutting blade extending through the gap. When the carriage is moved by the motor 13, the blade and gap move together so that the blade cuts stationary material supported on the belt. The carriage has an upper and lower part respectively above and below the plane A in which the material is supported, each part having a pair of guide shafts 34, 35, 36, 37, Fig. 4, along which upper and lower cross slides 38, 39 are movable in unison by cross screws 40, 41 interconnected by a shaft 62, Fig. 2, driven from a reversible motor 60. Each cross slide rotatably supports a vertical shaft 45, 46, each shaft having a gear 69, 74 engaged by a worm 68, 73 on splined shafts 67, 72 which are supported in the upper and lower parts of the carriage, are interconnected by a vertical shaft 71, and driven from a reversible motor 65. Each vertical shaft 45, 46 is secured to a bracket 47, 48 rotatably supporting one of the pulleys 49, 50, pulley 49 being connected to an electric motor 51. The brackets carry a plurality of small rollers 57 arranged in arcs to guide the cutting blade so that, between the pulleys, the paths of the blade are close together. One edge of the blade is bevelled whereby, at the cutting area, the blades present a combined edge B, Fig. 6, the two paths of the blade at the cutting area being guided by studs 59 in the bracket 48. In operation, the motors 13, 60 and 65 for moving the carriage 12, the cross slides 38, 39 and rotating the brackets 47, 48 are controlled by a circuit to which signals are transmitted from a punched tape reader, the blade being thus movable in any direction relative to the material to be cut and always maintained tangential to any curved cut being effected.
Patent GB-787318-A (GB)
Title: Improvements in or relating to control switches for electrically-actuated clutches
IPC: B60K23/00
Filed: 1956-06-13
Abstract: 787,318. Change-speed gearing. FICHTEL & SACHS AKT.-GES. June 13, 1956 [June 14, 1955]; No. 18320/56. Class 80 (2). A switch for disengaging the electricallyactuated clutch of a rear-engined motor vehicle during gear changing is embodied in a joint in the rod connecting the gear lever to the gearing, comprising flanges 15, 16 secured to the two parts 12a, 12b of the rod, a blade spring 18 connected across the two flanges for transmission of rotary movement therebetween, pairs of prestressed springs 24, 25 around pins 20 secured to one flange 15 and passing with clearance through holes in the other flange 16 for normally maintaining the two flanges a fixed distance apart, and a pair of opposed contacts 30 carried by a U-shaped member 28 secured to flange 15 and co-operating with a contact 33 connected to flange 16 by a blade spring 31. The springs 24, 25 normally hold loose washers 23 against the flange 16 and against enlargements 21 on the pins 20. When the rod portion 12a, connected to the gear lever, is moved axially during a gear change, one or other of the springs 24, 25 yields to allow one or other of the contacts 30 to engage the contact 33, so completing an electric circuit to disengage the clutch. The relative movement between the flanges 15, 16 is limited by spaced sleeves 26, 27 around the pins 20.
Patent GB-740962-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B75/02
Filed: 1952-11-21
Abstract: 740,962. Two-stroke engines. ELLUL, H Nov. 21, 1952 [Aug. 21, 1952], No. 18350/51. Class 7(2) [Also in Group XXVI] A prime mover comprises power means 1 operating by internal combustion, and supply pump means 12 and metering pump means 19 both driven by the power means, the outlet 17 of the supply pump being connected to the inlet 23 of the metering pump, and the outlet 24 of the latter being connected to the inlet 7 of the power means, the metering pump having a smaller volumetric delivery than either the power means or the supply pump. The devices 1, 12, 19, shown are all of the rotary type with sliding abutments 6, 15, 22, eccentrically mounted rotary pistons 3, 14, 21, and cylinders 2, 13, 20, but in a modification they are of the reciprocating piston type. The pistons shown in the diagrammatic drawing, Fig. 1, are all mounted on a shaft 11 and their cylinders are all of the same diameter. The pistons 3, 14, are identical in size but the piston 21 is larger and therefore gives a smaller volumetric ,delivery. The carburreter is indicated at 18 and the sparking plug at 10a. By this arrangement both the supply and metering pumps deliver at a higher pressure than exists at their intakes. In the case of areciprocating engine, each of the three devices 1, 12, 19, may consists of a cylinder open at the bottom and having at the top an inlet valve which opens during the down stroke of the piston and an exhaust valve which opens during the upstroke.
Patent GB-126246-A (GB)
Title: Improvements in Sheet Registering Mechanism.
Inventor: FORRESTER HAROLD JOSEPH CHARLE
IPC: B65H9/10
Filed: 1918-11-11
Abstract: 126,246. Forrester, H. J. C., (Miehle Printing Press & Manufacturing Co.). Nov. 11, 1918. Gripper-cylinder and like feeds; sheet forwarders; sheet-registering devices. - Sheets are moved forward and registered by suction devices against front stops moving at the speed of the grippers of t h e impression cylinder, and may also be registered sideways as they are moved forward. As shown, the sheet is fed from a table 10 to the grippers of the impression cylinder 11 by suction devices or carriers 24 revolving round a shaft 15 on which are fixed front stops 18. The shalt 13 is driven by gears 15, 14 so that the stops 18 move at the speed of the grippers, while the suction-carriers 24 are driven at a higher speed by gears 14, 20, 21. 22. The carriers comprise disks 23 attached to the gears 22, and provided with perforated cylindrical flanges 24 revolving round and in contact with stationary segmental suction shoes 25 suspended from bearings 26, 26<a> on the shafts 19, 13 and connected by pipes 27, 28 to an air-exhausting device. As the sheet is carried forward by the devices 24, it is registered against the moving front stops 18: and it is then registered laterally against a side stop 40 on the shaft 13, by a suction shoe 29 mounted to slide on rods or pins 31 carried by one of the front stops 18. A pipe 33 connects the suction shoe 29 to a bore 34 in the shaft 13 connected through hollow valve heads 35, 38 with a suction tube 39. The shoe 29 is moved outwardly to register the sheet by springs on the rods 31, the movement being controlled by a stationary cam 42 engaging a roller 43 on the shoe 29. As the sheet is moved sideways by the shoe 29, it is stretched and smoothed against the resistance of the suction-carrier devices 24, 25.
Patent GB-977350-A (GB)
Title: Improvements in or relating to waveform generators
Inventor: FENTON ROGER WAKEFIELD
IPC: H03K4/84
Filed: 1962-05-14
Abstract: 977,350. Semi-conductor oscillator circuits. MARCONI CO. Ltd. Jan. 25, 1963 [May 14, 1962], No. 18458/62. Heading H3T. A waveform generator comprises two unijunction transistors 1, 2 with their first bases connected to a point of constant potential, means for applying operating potentials to the second bases of the unijunction transistors through load resistances 3, 4, so chosen as to provide peak point stabilization of the unijunction transistors, a capacitor 8 included in the circuit between the emitters and means for connecting the emitters in at least approximately constant current circuits through which operating potentials are applied thereto. In Fig. 1 the first bases of the transistors 1, 2 are connected to earth and the second bases to a positive supply 5 via resistors 3, 4. The emitters are connected to a point 9 of higher potential via resistors 6, 7. Fig. 2 (not shown) has the unijunction transistors each in series with a junction transistor to provide the constant current source. Fig. 3 (not shown) illustrates a potentiometer providing the bias for the bases of the junction transistors.
Patent GB-419548-A (GB)
Title: Improvements relating to the cooling of dynamo electric machines
IPC: H02K9/06
Filed: 1933-06-29
Abstract: 419,548. Cooling dynamo - electric machines. HIGHFIELD, F. W. W., and HIGHFIELD ELECTRICAL CO., Ltd., Stoney Stanton Road, Coventry. June 29, 1933, No. 18497. [Class 35.] The cooling air to be conducted to or from the exterior of the machine casing is passed between fixed vanes ar. ranged in the stator and extending to the outside of the machine casing. In the form shown, air enters the machine at one end and, after flowing through axial and radial rotor ducts, reaches the radial flow fan c at the other end and finally emerges through ducts f formed by vanes g which face the fan periphery. When an axial flow fan is used, the air enters or emerges by ducts between vanes provided on the adjacent end wall of the machine.
Patent GB-1217554-A (GB)
Title: Improvements in or relating to valves
Inventor: SVARD ALF GEORG
IPC: F16K15/04
Filed: 1968-04-23
Abstract: 1,217,554. Valves. A. G. SVARD. 23 April, 1968 [24 April, 1967], No. 19023/68. Heading F2V. A non-return valve 1, comprises a cylindrical housing 2 having formed at its ends non- aligned inlet and outlet ports 5 and 3 respectively, and a spherical valve member 8 which, in response to the differences in pressure at the inlet and outlet lines 6 and 4 respectively, moves along a guide structure 9 into or out of engagement with a valve seat 7 formed around the inlet port 5, the guide structure being constituted by three parallel guide ribs 9. The response of the valve member 8 to the above mentioned pressure difference, may be varied by altering the guide structure such that it slopes towards the inlet, or has its central portion disposed above or below its end portions, or by tilting the housing (Figs. 3-6, not shown). The guide structure may also be made adjustable by set screws or by hydraulic or pneumatic means.