baber/WOPTO huggingface dataset:
Patent GB-885026-A (GB)
Title: Line tracer scanning head
IPC: B23Q35/128
Filed: 1958-06-27
Abstract: 885,026. Electric copying machines. CANADIAN WESTINGHOUSE CO. Ltd. June 27, 1958 [July 18, 1957], No. 20693/58. Class 38 (6). [Also in Group XL (b)] In a line tracing system the scanning axis of a photo-electric arrangement intersects a plane on which is formed an image of the line to be followed, the photo-electric signals operate on a control system to maintain the scanning axis in a position transverse to and bisected by the line image. A line drawing 20 is illuminated by lamps 18 and an image thereof is produced on the ground glass disc 23 and scanned by a photo-cell 24 which is supported by a beam 25 suspended by a flat spring 26 within the scanning head 8. A permanent magnet 27 attached to the beam co-operates with an electromagnet 28 supplied at mains frequency resulting in a swing of the beam across the disc 23 twice each supply frequency cycle. When the scanning axis is correctly positioned with respect to the line image the frequency of the output signal from the cell is twice the supply frequency and when the axis deviates from this position the cell signal includes a component at the supply frequency which is selected and amplified. The amplified signal is applied to one phase of a twophase servomotor 38, the other phase of the motor is supplied from the mains supply and the motor drives a gear chain 11, 12, 13, 14, 15, 16 and 17 to guide the shaft 36 supporting the drive wheel 42 and the scanning head in a direction which brings the scanning axis to its correct position. The amount by which the head is turned and the direction of turning are controlled respectively by the amplitude of the selected signal and its phase with respect to the supply frequency. A tachometer 39 produces a signal which varies the gain of the amplifier in inverse relationship to the servomotor speed, this damps the movement of the arrangement and prevents overshoot. The assembly is driven by a motor 37 coupled to the wheel 42. In a second arrangement, Figs. 3 and 4 (not shown), the swinging photo-cell is replaced by two fixed cells which are alternately energized at mains frequency.
Patent GB-921976-A (GB)
Title: Heat insulating linings in ingot moulds, head boxes and the like
Inventor: CHERRY GEORGE JOSEPH NALL
IPC: B22C3/00
Filed: 1961-06-08
Abstract: 921,976. Ingot moulds. FOSECO TRADING A.G. June 8, 1961, No. 20824/61. Class 83 (1). A mould or a head box is provided with a lining layer of fibrous cellulosic material such as paper pulp, wood fibre or chips, and a refractory filler of a density of 0.7 or less, such as pearlite, vermiculite, kieselguhr, or furnace aggregate. A binder such as natural or synthetic resins, clay or alkali silicate may be added. The layer may be faced with an exothermic or refractory material, or both, and may be backed by an exothermic layer. Specification 878,301 is referred to.
Patent GB-391424-A (GB)
Title: Improvements in and relating to electric insulating material
IPC: H01B3/20
Filed: 1931-07-21
Abstract: An insulating-composition, particularly for impregnating paper-insulated condensers, consists of a mixture of ozokerite and mineral oil, preferably in equal proportions.
Patent GB-1184718-A (GB)
Title: Methods for Grinding the Braking Members of Vehicle Brakes
Inventor: HENNIG ERICH
IPC: B24B7/16
Filed: 1967-05-05
Abstract: 1,184,718. Grinding. DUNLOP CO. Ltd. 5 May, 1967 [21 May, 1966; 2 Sept., 1966], No. 20899/67. Heading B3D. A method for grinding the rotatable braking disc of a vehicle disc brake comprises rotating the braking disc whilst in position on the vehicle and applying a grinding member or grinding members to a braking surface or the braking surfaces of the disc. To remove rust and dirt from brake discs of disc brakes installed in a motor vehicle, the friction pads in the brake caliper are replaced by grinding members, the vehicle is driven and the brakes are applied several times. Each grinding member comprises a grinding block 2, Fig. 1, a backing plate 1 and an interposed plastic heat insulating layer 3, all secured together by adhesive. The block 2 may comprise silicon carbide with an organic or ceramic binder. The installation dimensions of the grinding member are the same as those of the friction pad which it replaces. The grinding member engages a wider annular surface of the disc than that engaged by the friction pad. Alternatively, the vehicle is jacked up and the wheels removed. The brake disc 4, Fig. 2, is rotated by a friction roller 10 mounted on an electric drill and applied by hand to the periphery of the disc. Grinding blocks 2a, Fig. 3, mounted on a pair of tongs 6 are applied to the disc, the tongs being supported against the brake caliper. In a modification, use is made of a mobile stand 9, Fig. 4, on which is mounted a brake-like device 7 arranged to apply pressure to a pair of grinding members, a frictional drive roller 8 being provided.
Patent GB-137776-A (GB)
Title: Improvements in spring wheels for vehicles
IPC: B60B9/28
Filed: 1919-08-26
Abstract: 137,776. Feeny, V. F., (Spring Hub Automobile Wheel Corporation). Aug. 26, 1919. S p rin g wheels w i t h continuous outer rigid ring and helical springs.-Relates to spring wheels of the type in which an inner hub is maintained concentrically by spring- pressed plungers 13, and in which a driving connexion is made by pivoted links co - operating with a yoke encompassing the axle. Links 21 oppositely pivoted to the outer portions of the wheel carry on their inner ends curved pivoted links 19, the inner ends of which are oppositely pivoted at 25 to the inner hub. A cross-link 20, in the form of a yoke encompassing the axle 16, is pivotally connected to the links 19 at 26.
Patent GB-935916-A (GB)
Title: Electrical terminal assemblies
Inventor: DEAKIN STANLEY THOMAS
IPC: H01B17/30
Filed: 1961-06-10
Abstract: 935,916. Binding-posts. SABER PRODUCTS (PATENTS) Ltd. June 8, 1962 [June 10, 1961], No. 21051/61. Class 38 (1). An electrical terminal assembly consists of a metal plate 13 which fits into a groove 11a of a P.T.F.E. bushing 11 which is mounted in a hole in a housing (not shown). The plate 13 has a number of holes 13b each with a peripheral flange 13b<SP>1</SP> and a central hole 13a into which a spigot unit 14, consisting of a spigot 15 moulded integrally with a P.T.F.E. bushing 16, may be inserted. Connections may be made by inserting wires into the holes 13b, these wires being either soldered or a press fit in the holes.
Patent GB-633477-A (GB)
Title: Improvements relating to the detection of angle-modulated waves
IPC: H03D3/04
Filed: 1946-07-15
Abstract: 633,477. Phase difference measurements. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 15, 1946, No. 21080. Convention date, July 14, 1945. [Class 37] [Also in Group XL (c)] In apparatus for detecting phase differences between two waves, i.e. the angle modulation in phase or frequency modulated carrier wave systems, the waves are fed to a pair of doubletriode limiters 4, 4<1> respectively, which supply a common load resistance 5, the resultant voltage across which is rectified at 25. The rectified voltage is representative of the phase differences between the input signals and is taken off by the circuit 30<1>. The arrangement is such that the limiters 4, 4<1> produce square wave voltages which are phase displaced in accordance with the input waves and are combined in the load circuit 5 to provide a resultant variable square wave voltage, the pulse length of which in relation to the full cycle constitutes a measure of the phase difference. In a modification (Fig. 4, not shown), the outputs of the limiters 4, 4<1> are combined in a transformer T, the primary and secondary windings of which are tuned to the input waves. The resultant square waves , appearing in the primary are reproduced in the secondary as a sine wave which is rectified in any known manner. As applied to frequencymodulated carrier waves, a network arranged to produce the proper phase-related signal voltages comprises an I.F. amplifier (Fig. 3, not shown), provided with coupled resonant circuits respectively connected to the limiters 4, 4<1> and providing phased outputs depending upon frequency deviations. Specifications 558,833 and 592,556, [Group XL], are referred to.
Patent GB-347548-A (GB)
Title: Improvements in or relating to boots and more especially those for athletic wear
IPC: A43B5/02
Filed: 1930-07-11
Abstract: 347,548. Boots for athletic wear. WALSH, G. F., 141, West 95th Street, New York, U.S.A. July 11, 1930, No. 21100. Convention date, July 11, 1929. [Class 17 (ii).] Boots, more especially those for athletic sports, such as football, have discontinuous reinforcing strips 4, 10, 13 extending on each side of the opening from the toe cap 1 and flush therewith to substantially the top of the upper. The strips may be arranged as shown, and the upper at the heel end may be formed by a substantially triangular portion 15 flush at its lower end with the heel portion 2 and turned in over at the upper edge and sewn.
Patent GB-787803-A (GB)
Title: Improvements in or relating to test instruments for timing spark pulses
IPC: F02P17/02
Filed: 1954-07-20
Abstract: 787,803. Timing ignition circuits. BRITISH PETROLEUM CO., Ltd., HULF, H. J., and HATHAWAY, R. W. Aug. 31, 1955 [July 20, 1954], No. 21123/54. Class 37. [Also in Group XXXVIII] In an ignition timer in which the timing is indicated by an instrument responsive to the time interval between spark pulses and reference pulses, the latter are derived from a pressureresponsive transducer in communication with an unfired cylinder and the two sets of pulses control the respective states of a bi-stable trigger circuit and thus generate rectangular pulses which are averaged in a microammeter. As shown, pulses of form (a), Fig. 2, from the pressure-responsive transducer PU pass via limiting amplifier V1 ... V6 to thyratrons V7, V8. The output giving form (b) pulse of form (f) from V7 which fires at the cross-over point of the amplifier output, is applied to the righthand grid of a bi-stable trigger V17, V18. A pick-up coupled to the ignition circuit provides a pulse for each spark in the cylinder under test, this pulse with the aid of amplifier V9 and diodes V10, V1 1 having waveform (e) at the grid of thyratron V12 which produces output waveforms (f), (m) at its anode and cathode respectively. The anode pulse changes over a bi-stable trigger V13, V14 and the resulting pulse at the anode V13 controls a single-shot multivibrator V15, V16, the purpose of which is to delay the spark-pulse supplied to the metering trigger circuit V17, V18 by an amount to compensate for an inevitable lag between top dead centre and the reference pulse supplied to the metering circuit. To eliminate spurious reference impulses, the thyratron V7 is disabled during the pulse at the anode of V14 due to the spark pulse (g). The trailing edge of the spark pulse from V16 puts V18 into its low resistance condition and the reference pulse from V7 restores the high resistance condition. The average current in the coil of meter M1 thus depends on the degree of spark advance. The effect of the normal steady anode current in the coil of meter M1 is neutralized by a corresponding current in the back-off coil. The spark pulse from the cathode of V12 actuates a single-shot multivibrator V19, V20 and the resulting pulse at the anode of V19, (n), actuates a meter M2 calibrated in crank-shaft r.p.m. The pulses at anode V20 are integrated in the grid network of a valve V21, the output of which thus represents distributer speed. At normal speeds, A is deenergized but when the speed falls to a given level adjustable at R 101, the relay pulls up and shunts out the spark advance meter.
Patent GB-1470851-A (GB)
Title: Fail-safe timing circuit
IPC: H02H3/027
Filed: 1974-05-14
Abstract: 1470851 Transistor switching circuits SIE SOC ITALIANA ELETTRONICA SpA 14 May 1974 [30 May 1973] 21212/74 Heading H3T A delayed switching circuit comprises energy storage means 8 which can be charged to a predetermined level, means for discharging it in a modulated, e.g. stepwise, manner and means responsive to the discharge to produce an output. In a first embodiment, Fig. 2, when switch J is open transistors Q1, Q2 are alternately switched on and off by a pulse train at Y to cause capacitor 8 to charge and discharge. The resulting pulse signal is fed via transistors Q3, Q4 and transformer T to hold relay R energized. When switch J is closed transistor Q1 is held off and capacitor 8 cannot recharge. The input pulse signal will now cause it to discharge in a stepwise fashion until, after the required delay period, no more pulses are fed via transformer T and relay R releases to produce an output. In a second embodiment, Fig. 4, a pulse input signal switching between the two levels + 15 v. and 0 v. is applied to point X and the circuit gives an indication if the signal remains at one or other level for more than a predetermined time. When the input is at the 0 v. level transistor Q1 is on and capacitor 6 charges cutting Q3, Q4 off. Initially relay R is held energized by a charge previously given to capacitor 15, but if this state is maintained for more than the predetermined time the charge leaks away to release the relay R closing contacts R1. When the signal switches to +15 v., transistor Q2 is pulsed by the squarewave signal applied at W to discharge capacitor 6 in a stepwise manner. This provides the pulses which charge capacitor 15 and hold on relay R. If this state is maintained for more than a second predetermined time, capacitor 6 becomes discharged, the pulse from to capacitor 15 ceases, and this capacitor in turn discharges to again release relay R.
Patent GB-727319-A (GB)
Title: Improvements in or relating to mould removal in foundry moulding machines
IPC: B22C17/02
Filed: 1951-09-10
Abstract: 727,319. Moulding-machines. FAURE, B. Sept. 10, 1951 [Sept. 9, 1950], No. 21293/51. Class 83 (1). A support for the moulding box during drawing comprises two telescopic tubular parts combined with a spring tending to extend them, an elastic sheath between the tubular parts and means to inflate the sheath and thus immobilize said parts. Each of the push-elements may comprise a hollow support 1, secured to a fixed part of the machine by nuts 12, a sleeve 3 being arranged about the support and supported by a spring 4. The upper ends of both parts are closed and a rubber sheath 2 is secured in at least two points 5 over a reduced and perforated part 7 of the support. After the sleeves 3 have been pushed down by the mould box they are made immovable by admitting compressed air to the supports 1, thus expanding the sheaths 2 and looking the sleeves 1, 3. The spring 4 may be replaced by electrical, pneumatic or mechanical means.
Patent GB-775525-A (GB)
Title: Improvements relating to the drive of ancilliary mechanisms in driving systems having an internal combustion engine as prime mover
IPC: F16D33/14
Filed: 1955-07-22
Abstract: 775,525. Compressors. VOITH GES., J. M. July 22, 1955 [July 28, 1954], No. 21346/55. Class 8(1) [Also in Group XXIX] In an arrangement for operating an air brake compressor in a propulsion unit, having an internal combustion engine 1 as the prime mover, the compressor 6 is driven from the engine 1 through a controllable turbo coupling 5 in such manner that the compressor, when the engine is idling and the coupling is full, rotates at a speed sufficient to deliver at least the minimum permissible quantity of air, and that when idling speed is exceeded the turbo coupling remains in operation until maximum permissible compressor speed is reached, and that with a further increase in engine speed the turbo coupling is controlled to such an extent that the compressor cannot exceed its maximum permissible speed. The turbo coupling 5 is disposed on the impeller shaft of a fluid transmission 4 driven from the engine 1, and drives a main compressor 6 feeding an auxiliary reservoir 7 leading to a main reservoir 9 having a pipe 10 leading to the loads. The coupling is filled from the pump 22 of the hydraulic transmission via a pipe 23, spring-loaded valve 25, and pipe 30. When pressure in reservoir 9 exceeds a predetermined level, air in the duct 44 depresses the valve 25 and interrupts communication between pipes 23 and 30. The coupling has a stationary scoop tube connected by a pipe 32 to a spring loaded valve 26 so that when the valve 25 is in its lowermost position the coupling is emptied rapidly by liquid in pipe 32 passing through apertures in valve 26 to an annular chamber 33, bore 34 and annular chamber 35, thence past the depressed valve 25 into annular groove 36, bore 38 and pipe 40 leading to the oil sump 41. When pressure in pipe .32 exceeds pressure of spring 42, the valve 26 is raised to a greater or lesser extent .and an annular gap controlled by a conical part 43 of the valve is opened to allow some of the liquid in pipe 32 to pass out into bore 38 and pipe 40. An auxiliary compressor 13 is provided to also supply air, through pipe 14, to the main reservoir 9 when the I.C. engine is idling. Power is transmitted from the engine 1 through belting 11 to a clutch 12 which is urged to an open position by a spring 16 acting on a lever 15. The clutch is moved to the closed position by air from the auxiliary reservoir 7 flowing through a pipe 18 to actuate a piston 17, communication between pipe 18 and reservoir 7 being through a valve 19 responding to pressure in the main reservoir 9 so that the pipe is closed when said pressure reaches a certain value but is opened when the pressure falls to a predetermined level. A shut-off valve 20 is coupled with a control lever 21 to close the pipe 18. when the lever is moved out of the idling position.
Patent GB-382324-A (GB)
Title: Improvements in or relating to windows and the like
IPC: E06B5/20
Filed: 1931-07-27
Abstract: 382,324. Window frames ; double windows ; glazing. BAMBERGER, J. J., 56, Whitcomb Street, London. July 27, 1931, No. 21447. [Class 20 (iii).] A soundproof window for a kinematograph projection-room or other use comprises two separate glazed frames which are placed one on each side of the wall opening and are interconnected by bolts, bars, or distance-pieces. In the form shown, the connecting bolts 14, Figs. 1 and 2, are screwed into bosses 41 on one frame 4 and have screw-threaded portions 15 which project through apertures in the other fram 5. The frame 4, which is situated on the auditorium side of the wall 6, supports a glazed inwardly-opening casement frame 7 mounted on hinges 12. The casement is held in the closed position by a pivoted latch 13 and in this position abuts against' rubber packing- pieces 10 on the frame 4. The frame 5 is secured in position by nuts 16 screwed on to the connecting bolts 14. This frame is formed to receive a detachable glazed frame 18, which is locked in position by clamps 23. The aperture in the frame 5 is of sufficient size to enable the casement 7 to swing therethrough when the frame 18 has been removed. Reduced extensions 17 on the bolts 14 are adapted to pass through apertures in bosses 22 on the frame 18 when the latter is in position. The glass panes 8, 19 of the frames 7, 18, respectively, are secured in position by fillets 25, 26 which bear against rubber linings) 9, 20, inserted between the glass and the fillets.
Patent GB-803387-A (GB)
Title: Improved method of transporting and storing prepared foods
Inventor: CLARKE HOUGHTON WILLARD
IPC: A47J47/14
Filed: 1956-07-11
Abstract: In packing a hot meal for storage and transport, a heat-retaining dish, e.g. a thick ovenware dish, is heated to the cooking temperature of the food it is to hold, e.g. is heated so that the surface temperature is 150-200 DEG  F., the hot food is placed in the dish, the heated dish of hot food is enclosed in a container so that vapours from the food fill the upper part of the container, and the container is then sealed.  Maintenance of the sealed container at room temperature results in the formation of a partial vacuum about the exposed surfaces of the food, while the unexposed surfaces of the food remain in contact with the hot dish.  The dish may be divided into compartments for separation of different foods of the meal, and a lid for the dish may be placed on the partitions between the compartments.  The container may be of two sections clamped together with a gasket intervening.  The container may be heat-insulated.
Patent GB-1279891-A (GB)
Title: Method of and apparatus for sealing a cover web onto a container chain
IPC: B65B7/16
Filed: 1970-05-05
Abstract: 1279891 Applying container covers HOFLIGER & KARG 5 May 1970 [8 May 1969] 21499/70 Heading B8C In order to ensure the correct registration of a cover web 2, e.g. aluminium, upon a container chain 1 formed by deep-drawing recesses in a foil web, the leading edge 10 of the cover web 2 is secured by a sealer 3, 4 on to the leading edge of the uncovered portion of the container chain whilst an adjacent downstream severed section 9 of the cover web is being secured also by the sealer 3, 4 on to an appropriate part of the container chain. The cover web 2 and container chain 1 are fed intermittently under the control of a photo-electric cell 5 responsive to indicia equally spaced along the cover web 2. Each cover web section is severed by a cutter 8 during or following the sealing operation. The photoelectric cell 5, cutter 8 and feed rollers 6, 7 are mounted on a movable support 11 so that cover web sections of different lengths may be accommodated.
Patent GB-315375-A (GB)
Title: Improvements relating to electron discharge devices
IPC: H01J19/02
Filed: 1929-07-12
Abstract: 315,375. Westinghouse Lamp Co., (Assignees of Marden, J. W., and Lederer, E. A.). July 12, 1928, [Convention date]. Vacuum tubes. - In a discharge tube having an indirectly-heated cathode and a perforated anode, which facilitates the escape of heat and prevents the heating of the control electrode to a temperature at which it would emit electrons, the cathode-heater, which may be energized by alternating current, is connected at its ends, by means of connecting wires, to lead-in wires at the same end of the tube, one of said connecting wires being located outside of the anode and screened therefrom, to prevent hum, solely by a barrier of insulating material. In one example, Fig. 1, the cathode comprises a hollow metal shell 15, which has a coating of a mixture of the oxides of barium and strontium or a layer of caesium which is held thereon by an interposed atomic layer of oxygen or oxidized metal. The ends of the shell are closed by insulating plugs 17. The heating element consists of a coiled tungsten filament 21 supported by wires 19, 20 which are extended beyond the plugs 17 inside the shell in order that they may not attain a high temperature within the plugs. Current is supplied to the filament through wires 22, 23 which are connected respectively to a heavy wire 24 which supports the lower plug, and a wire 25 which is bent to secure an insulating porcelain or mica shield 26a in position. The wire 23 is encased in a glass tube. An anode 14 is perforated or former of wire mesh. A getter 33 may be provided on a carrier 34 which is supported by a wire 35 secured to a conductor 32. In a modification, Fig. 2, the electrodes are mounted between two insulators 36, 37 which have tubular portions 40, 41 securing the cathode. The insulators may be secured by means of members 54 welded to the supports 38, 39, which, alternatively, may be provided with enlarged portions as a securing means. Specifications 307,856 and 307,857 are referred to.