baber/WOPTO huggingface dataset:
Patent GB-1525033-A (GB)
Title: Inductively coupled lock
IPC: E05B49/00
Filed: 1976-06-09
Abstract: 1525033 Inductively coupled lock EASTERN CO [trading as ILLINOIS LOCK CO] 9 June 1976 [11 June 1975] 23873/76 Heading E2A An electronic lock system comprises a key which has a clock driven variable pulse width generator with alterable pulse sequence input to an inductor; and a lock which has an inductive pick-up which discriminates against all but a preselected sequence of pulses, converts the received signals to DC and powers a motor to open the lock. The key 12 comprises a variable frequency timing device 32 which inputs pulses to a variable pulse width generator 34, these pulses are output to one side of a logic circuit 44, 46 and to a coded sequence generator comprising an inverter 36 and division circuits 38, 42 connected by switch 40. The output of the logic circuit is amplified 48 and input to an inductor 20 placed at one end of the key so that it may be placed in close proximity to the receiving inductor 22 in the lock 14. The lock unit comprises diodes 62, 64, 66, 68 connected to the inductor 22 to generate DC power for the lock drive motor 26 and the lock logic circuit. If the preselected sequence of pulses is received, the logic circuitry passes signals to the lock drive motor causing it to run in one direction opening the lock. If the logic circuitry detects a sequence of pulses which is not the preselected sequence, the signals to the motor cause it to run in the other direction keeping the lock closed.
Patent GB-464582-A (GB)
Title: Improvements in or connected with shaving brushes
IPC: A46B15/00
Filed: 1936-08-27
Abstract: 464,582. Combined shaving brush and holder. LIPPERER, G., and THAETER (LONDON), Ltd. Aug. 27, 1936, No. 23970/35. [Class 19] A combined shaving brush and holder comprises a tubular casing 1 having a short internal screw thread 1b at or near its open end, and a stock 3 carrying bristles 5 and having a short external screw thread 3a. The stock is slidable within the casing so that the brush can be positioned within, or can be withdrawn so that the bristles project beyond, the casing. In the latter case, the brush is held in position by rotating the stock relative to the casing so that the screw threads 1b and 3a interengage. Perforated screw caps 4 and 4b, are provided at the top and bottom of the casing respectively.
Patent GB-1509346-A (GB)
Title: Method of forming porous coating on electrode layer of concentration cell type oxygen sensor
IPC: G01N27/26
Filed: 1976-06-10
Abstract: 1509346 Coating solid electrolyte sensor electrodes NISSAN MOTOR CO Ltd 10 June 1976 [10 June 1975] 24024/76 Heading GIN A porous coating is formed on the outside of an electrode of a solid electrolyte oxygen sensor by: (a) applying fine particles of a heat-resistant and chemically stable first material on to the electrode to form a porous layer by spraying at a high temperature; (b) applying a dispersion of fine particles of a heat-resistant and chemically stable second material in a liquid on to the porous layer to impregnate it; and (c) baking the impregnated porous layer. The first material may be alumina, spinel (MgAl 2 O 4 ) alumina cement, beryllia, zirconia, nickel oxide, silicon carbide, boron carbide or boron nitride, its particle size being 5-50 Ám. The layer is preferably applied by plasma spraying. The second material may be silica sol, alumina sol, water gloss or an aqueous dispersion of γ- aluminia. It may be applied by vacuum impregnation, immersion, spraying or ultrasonic impregnation. The baking is preferably carried out at about 900‹C and the resulting porous coating has a thickness in the range 5-500 Á. The coated sensor is particularly suitable for measurement of oxygen in exhaust gases.
Patent GB-1433421-A (GB)
Title: Strip transport arrangement
IPC: B65H23/18
Filed: 1973-05-21
Abstract: 1433421 Automatic control of speed ROSS CONTROLS CORP 21 May 1973 [22 May 1972] 24029/73 Heading G3R The linear speed of a tape in a capstanless reel to reel transport arrangement is maintained substantially constant by using a control system which responds to the angular velocity of both the supply and take-up reels to provide a varying control signal to a motor driving the take-up reel. The supply reel is restrained to maintain tension in the tape. In the arrangements shown the drive reel motor 18a and supply reel motor 20a are connected to tachometer circuits 46, 48 which derive signals # A  and # B  respectively from the back c.m.f. of the motors. In Fig. 2 these angular velocity signals pass to a function generator 44 where a signal proportional to the ratio of the product # A <SP>2</SP> # B <SP>2</SP> to the sum # A <SP>2</SP>+# B <SP>2</SP> is derived. For constant linear tape speed this ratio should be constant and is thus compared at 34 with a reference signal to produce an error signal which is used to control the speed of drive motor 18a. In the alternative embodiment shown in Fig. 4 the function generator produces a signal derived from the difference # A -# B  which function should, for linear tape speed, be equal to the value of # A . Thus the resistor chain R8, R9, R10 provides at point C a point proportional to # A -# B  which is input to function generator 61 to provide an output signal <SP>e</SP>R 3  which is compared at 64 with the velocity signal # A  to provide the error signal to control the speed of drive motor 18a.
Patent GB-153563-A (GB)
Title: Repeaters for multiplex signalling systems
IPC: H04B3/36
Filed: 1920-08-18
Abstract: 153,563. Western Electric Co., (Assignees of Kendall, B. W.). Oct. 31, 1919, [Convention date]. Multiplex systems; thermionic relays.-Carrier currents of different frequencies, separately modulated for the multiplex transmission of speech &c. are repeated by a single amplifier, which is designed to have a substantially rectilinear characteristic so as to avoid cross-modulation. In the two-way repeater shown at the right of the Figure, each amplifier consists of a pair of thermionic valves having their grids connected to the two ends of the input transformer coil 29, so as to be oppositely affected, .and with their anodes connected through inductances 38, 39 and a supply battery 35 to the mid-point of the same coil. The terminal station shown at the left of the figure comprises transmitters T<1>, T<2> and receivers R<1>, R<2> connected to a balanced transformer 7, 8, 9 between the line 1, 2 and artificial line 5. Each transmitter comprises a carrier-current generator 10 and a microphone circuit 12, both coupled to a modulating-valve 11, the output circuit of which is connected to the coil 9 through circuits 21, 22 tuned to the carrier frequency. A filter F prevents currents of audible frequencies from passing to line. At the repeater station, the currents pass from the mid-points of a transformer 26, 27 (balanced with respect to the line 1, 2 and artificial line 6) to the input transformer 28. 29, and the amplified currents pass through condensers 40, 41 and transformers 42, 43, 44 to the line 3, 4. Currents in the reverse direction are repeated by the lower amplifier to the line 1, 2 and are sorted into different receiving-channels R', R<2> by tuned circuits such as 49, 51. The speech-modulations are detected by valves such as 52 and transmitted to receivers such as 53 through filters which prevent the passage of currents of the carrier frequency. The line 1, 2 may also carry ordinary speech currents.
Patent GB-596433-A (GB)
Title: Means for controlling the supply of liquid fuel to internal combustion prime movers
Filed: 1944-12-01
Abstract: 596,433. Fluid-pressure servomotorcontrol systems ; regulating pressure of fluids. LUCAS, Ltd., J., and WATSON, E. A. Dec. 1, 1944, No. 24056. [Class 135] [Also in Groups XXVI and XXVII] In a liquid fuel supply system for an internal - combustion prime mover in which the output of a variable delivery pump is controlled, at least in part, by fluid pressure dependent on the speed of the prime mover, an adjustable control means is provided whereby any desired proportion of the available fluid pressure may be utilized in controlling the pump. Fig. 1 shows a variable delivery fuel pump a supplied from a tank c and delivering through a pipe f to jets e of the prime mover. The pump output is controlled by an adjustable swash-plate b connected to a piston h in a chamber i which is connected at one end to the pump delivery by a conduit k and at the other end, by a conduit n, to a vent o, whilst the two ends of the chamber are interconnected by a restricted passage m. The vent o is controlled by a closure member p on a lever q attached to a diaphragm s and acted upon by a spring v, an evacuated capsule 3 subjected externally to atmospheric pressure through an aperture 2, and a plunger w. A byepass device 4, comprising a shallow cylindrical chamber containing a rotatable disc 5 providing a narrow annular space 6, is connected at 7 to the pump delivery, and at 8, to a return pipe to the tank c, the space 6 being so proportioned as to provide a convenient pressure drop between the ports 7, 8. The disc 5 has a right-angled passageway 10, 11 connected to a pipe 13 communicating with the plunger w, whereby the pressure at any point of the space 6 may be applied to the plunger w for controlling the vent o. In a modification of the byepass device, the disc 5 is provided with teeth around its periphery. In another arrangement, two plug-members 5<2>, Fig. 4, which may be either of tapered or cylindrical form with one or more tapered grooves 6<2>, are adapted to slide in cylindrical ports at either end of a chamber 4<2> to vary the pressure at a port 12<2>. In a further modification, a variable pressure is obtained at a port 12<3>, Fig. 5, between an inlet 7<3> and an outlet 8<3>, by adjustment of a flow-restricting member 25 through a rack-and-pinion mechanism. In another system an air compressor 34, Fig. 6, driven by the prime mover supplies air under pressure through a conduit 33 and restriction 36 to a chamber 30, where the pressure acts, through a diaphragm 28 on the lever q<4>. Control of this pressure is effected by a variable restriction 37 at an outlet port 8<4>.
Patent GB-687519-A (GB)
Title: Improvements relating to the manufacture of carburetted water gas
Inventor: WILLIAMS NORMAN HENRY
IPC: C10J1/213
Filed: 1950-10-03
Abstract: 687,519. Water-gas. HUMPHREYS & GLASGOW, -Ltd. Aug. 9, 1951 [Oct. 3, 1950], No. 24136/50. Class 55 (i). In the manufacture of carburetted water-gas, reverse-blast air is admitted at j to the super-heater c adjacent to the up-blast gas outlet i, and is passed through the superheater and carburetter b to a valveless connection d between the carburetter and the top of the generator a, and during the up-blasting period, air is supplied at g<SP>1</SP>, in the neighbourhood of the top of the fuel bed, for secondary combustion of the up-blast gases in the top of the generator. Upblast air is supplied from the valved pipe f, secondary air is supplied from the bustle pipe g and additional secondary air is admitted to the connection d at h. The waste up-blast gases pass from the pipe i through a boiler to the stack. Up and down run steam pipes l, m are provided, and the up and reverse run gasofftake pipes n; o lead through a washer to storage. Heavy oil is sprayed at p and q. As shown, the reverse blast gases pass at k to a stack, but, if desired, they may be passed through a regenerator having an entrance part arranged as a combustion zone to which secondary air is admitted. The air supply to the pipes g, h is passed through the regenerator during the up-blast.
Patent GB-617437-A (GB)
Title: Improvements in or relating to signal generators for calibrating distance determining systems
IPC: G01S13/34
Filed: 1946-08-14
Abstract: 617,437. Testing frequency-modulated rangemeasuring equipment; radio direction-finding. RAYTHEON MANUFACTURING CO. Aug. 14, 1946, No. 24145. Convention date, Aug. 20, 1945. [Classes 40 (v) and 40 (vii)] A signal generator for calibrating radio altimeters of the frequency-modulated type generates trains of oscillations, the period during which each of the trains is generated being substantially equal to the echo time equivalent of the particular altitude for which the altimeter is being calibrated; and each train of oscillations is initiated in time phase with the instantaneous signal of the altimeter. The trains of oscillations are obtained by quenching a calibration oscillator at periods determined by the output of a crystal-controlled range oscillator 15, which shock excites a circuit 34, 35 having a resonant frequency higher than that of the oscillator 15. The resulting output, a series of damped wave trains, is passed to a clipper 17 which passes only the first positive pulse of each wave train, resulting in a series of quenching pulses having a repetition rate equal to the frequency of range oscillator 15. These pulses, by allowing conduction of diodes 47, 48, quench the push-pull tuned grid, tuned anode calibration oscillator 18, resulting in intermittent trains of oscillations, each wave train having a duration accurately determined by the frequency of the range oscillator 15. The output of the calibration oscillator 18 is coupled to the altimeter receiver by a coupling loop 72 adjacent the grid line 67, whilst a portion of the output of the altimeter transmitter is similarly coupled at 71 so that the altimeter transmitter initiates each free running period of the calibration oscillator 18 and momentarily synchronizes the two signals. In operation, each successive train of oscillations heterodynining the varying frequency signal of the altimeter transmitter, results in a succession of R.F. beat frequency trains of oscillations, each train differing slightly in frequency from the previous. This slow change in frequency corresponds to the beat frequency normally produced at the particular altitude for which the chosen time duration of each train of oscillations is the time equivalent. To calibrate the high altitude range of the altimeter the frequency of the range oscillator 15 is reduced to, say, one-tenth of its former value. The calibrator may be used to measure the band. sweep of any F.M. device, and the calibration oscillator 18 may be slightly frequency modulated at a low rate.
Patent GB-406931-A (GB)
Title: Improvements in and relating to means for regulating delivery of thread from supply bobbins
IPC: B65H59/04
Filed: 1933-08-31
Abstract: 406,931. Controlling delivery of thread and the like from bobbins. HORN, G., (trading as HORN MASCHINENFABRIK, G.), 125, Langhansstrasse, Weissensee, Berlin. Aug. 31, 1933, No. 24190. Convention date, Sept. 9, 1932. [Class 120 (ii).] In means for regulating the delivery of thread, wire &c. from a supply bobbin d, the thread is first led around the longer arm of a brake lever f and then over a thread tension lever g, which may have an exchangeable or adjustable spring, so that on exerting a pull on the thread &c., first of all the brake lever f is moved in such a way as to effect braking of the bobbin, e.g. by a brake disc c, until the thread tension lever yields to the pulling force in the thread to such a degree that in consequence of the altered path of the thread the pulling force of the thread on the brake lever f is reduced to such an extent that the bobbin d rotates more freely and increases delivery. The brake shoe shown may be replaced by a band brake &c., and the brake and tension levers may be carried by separate pivots e.
Patent GB-1072498-A (GB)
Title: Improvements in photographic diaphragm shutters
IPC: G03B9/08
Filed: 1965-06-09
Abstract: 1,072,498. Photographic shutters. E. BERTRAM and W. BERTRAM, [trading as ERNST & WILHELM BERTRAM, FABRIK PHOTOTECHNISCHER MESSGERTE]. June 9, 1965 [June 11, 1964], No. 24328/65. Heading G2A. A photographic diaphragm shutter has blades 4 movable about pivots 8 by a blade ring 5 secured to the blades by pivots 6 and is arranged so that the pivots 8 are movable along slots 9 whereby the aperture opened by the shutter blades can be varied. The pivots 8 are supported on levers 10 movable against biasing springs 13 by rotation of cams 14 engaging projections 12 on the levers. The shutter is cocked by movement of the lever 15 against a biasing spring 17 into the position shown in full lines and is released by lever 20. The lever 15 then rotates under the action of its spring and pin 18 rides in groove 19 to oscillate the blade ring and so operate the shutter. Pin 18 has a sloping surface so that it rides out of groove 19 during cocking of the shutter.
Patent GB-188141-A (GB)
Title: Parallel laid metallic bound wire rope
IPC: F16G9/00
Filed: 1921-09-14
Abstract: 188,141. Bell, G. Sept. 14, 1921. Wire ropes; loops; wire cores, covering by winding.-A wire rope is formed of a core of parallel wires a, over which is wound a metallic tape b, preferably of stepped section, a small clearance c being left to allow for expansion. The tape is applied hot and under tension, the heating being effected by passing an electric current through it. The rope may be made by winding a wire round spaced rollers and then joining the ends thereof so as to obtain a number of parallel convolutions, which are bound together. Loops e left at each end are covered with wire j, and split collars f are clamped at the end of the tape band are filled with white metal &c. to prevent ingress of water.
Patent GB-940749-A (GB)
Title: Liquid oxygen converter system for passenger aircraft
Inventor: KUGLER SIMON
IPC: A62B7/06
Filed: 1961-07-05
Abstract: 940,749. Respiratory apparatus. BRITISH OXYGEN CO. Ltd. Aug. 29, 1962 [July 5, 1961], No. 24386/61. Heading A5T. [Also in Division F4] A liquid oxygen breathing apparatus for use in aircraft comprises first and second liquid oxygen supply lines 16, 17 extending from a liquid oxygen converter 10 to crew and passengers respectively, the outlet 14 to the second supply line being at a higher level than the outlet 13 to the first supply line, a build-up circuit 18, 22, 23 being connectable with either supply line through a multiport changeover valve A which is biased towards a first position, in which it isolates the second supply line and connects the build-up circuit with the first supply line, and which is normally held by a catch (not shown) in a second position in which it connects the second supply line with the build-up circuit, the catch being releasable in response to reduction in pressure below a predetermined value so that the valve is moved to its first position and the changeover valve being manually returnable to its second position. The fall in pressure which releases the catch occurs when the liquid oxygen in the converter has fallen below the level of the passenger supply outlet 14 and causes the valve to cut off oxygen from the passengers, supply to the crew continuing. Non-return valves 20, 21 and vaporizing coils (not shown) are disposed in each supply line. The changeover valve A includes a rotatable body arranged in a housing having a port 25 connected with the build-up circuit which includes a combined, build-up filler and vent valve 18 and a pressure closing valve 24, ports 27, 28 connected in the second supply line and a port 29 connected to the first supply line. Normally excess pressure developed in the converter is released to atmosphere through a relief valve (not shown) but in a modification such pressure is released through a pressure opening valve (Fig. 2, not shown) into the first supply line.
Patent GB-337488-A (GB)
Title: Improvements in or relating to vacuum flasks
IPC: A47J41/02
Filed: 1929-08-09
Abstract: 337,488. Wilhelm, T. Aug. 9, 1929. Cold and heat retaining vessels.-A vacuum-jacketed vessel 28 is provided with a separate sharp-edged pouring ring 23, of metal, glass, porcelain &c., which projects above and forms a fluid-tight joint with the conical portion 26 of the screwed-on shoulder member 27 of the casing 1. A cap 5, 6 fitted over the bottom of the vessel is engaged by a spring 3 which forces the neck of the vessel against the casing neck. The pouring ring may be cemented to the vessel or be held in position by the spring pressure.
Patent GB-139734-A (GB)
Title: Improvements in or relating to flushing apparatus for water closets
IPC: E03D1/36
Filed: 1919-10-07
Abstract: 139,734. HerzÚ, J. Oct. 7, 1919. Valve-discharge water-waste preventers; seat-lid actions. - When the closet seat-lid 6 is raised, a rod 1 having a quick thread is turned and the supply valve 2 is opened and the discharge valve 3 closed. The cistern then fills against air pressure. When the lid is lowered after use, the reverse motions take place, and the closet is flushed, the cistern remaining empty until the lid 6 is again raised.
Patent GB-626843-A (GB)
Title: Improvements relating to thermally-actuated hydraulic power units
IPC: G05D23/12
Filed: 1947-09-08
Abstract: 626,843. Temperature-responsive actuating-elements. DENISOFF, A. C. Sept. 8, 1947, No. 24647. [Class 64(ii)] '[Also in Group XXXVII] A thermallyactuated hydraulic power unit comprises a liquid-filled enclosure comprising two bellows 20, 30, each having a movable head 21 or 31, the length of one bellows 20 being less than that of the other 30 and less than its own diameter, so that when the liquid expands the head 31 of the longer bellows moves up, to an associated adjustable stop 63 whereupon the head 21 of the shorter bellows is moved. The bellows 20, 30 are both secured to a flange 13 on a cylinder 10 and form a receiver which communicates through a capillary tube 40 with three tubular containers or bulbs 42 connected in series. Springs 24, 32 urge the bellows to their contracted positions and the adjustable stop 63 is spring loaded. The apparatus may be used as shown to control an electric switch 50 or to control the temperature of refrigerator, gas and electric ovens, hot water storage tanks, solder baths and laboratory apparatus. In some applications the thermal bulbs may be dispensed with. To compensate for ambient temperature changes along the line connecting the bulb to the receiver, a compensating device, e.g. of the type described in Specification 614,934 may be incorporated.
Patent GB-830811-A (GB)
Title: Method of filming glass surfaces
IPC: C03C17/00
Filed: 1957-08-06
Abstract: A glass sheet is coated on both sides with a layer of tin oxide by passing the heated glass between sprays of stannic tetrachloride. The glass is then tempered and the coating on one side removed, e.g. by zinc and hydrochloric acid.  The method may be applied to glass carrying interference or partially reflecting films.