baber/WOPTO huggingface dataset:
Patent GB-1449955-A (GB)
Title: Video recorder
IPC: H04N5/781
Filed: 1974-02-04
Abstract: 1449955 Automatic control of speed ARVIN INDUSTRIES Inc 4 Feb 1974 [5 Feb 1973] 05120/74 Heading G3R The speed of a motor 18, driving a magnetic recording material e.g. a disc 16 in a video recorder, is retroactively controlled by the phase comparison of a motor speed signal from a tachogenerator 26 (whose frequency depends upon motor speed) and a signal from an oscillator 36, which is free-running in the presence of an input video signal and at a fixed frequency, e.g. controlled by a crystal, in the absence of the input. In the embodiment, horizontal synchronizing signals are separated at 20 from an input video signal and used to connect either a capacitor or a crystal into the oscillator according to whether the input signal is respectively present or absent for longer than a given interval. Vertical synchronizing signals from separator 20 open gate 13, allowing the input signal to pass to recording transducer 15. One frame of the signal is recorded for each revolution of the disc 16, and then the transducer is moved to a different position on the disc. Details of the separator 20, which includes a dual NAND Schmitt trigger, and the oscillator 36, are given in Fig. 2 (not shown).
Patent GB-576575-A (GB)
Title: Improvements in and relating to holders for thermionic valves and like electrical devices and means for securing them to supports
IPC: H01R33/76
Filed: 1944-03-20
Abstract: 576,575. Thermionic valve holders. CARR FASTENER CO., Ltd., and WAGSTAFF, G. March 20, 1944, No. 5178. [Class 38 (i)] [Also in Group XXV] A valve holder or similar device projecting through a correspondingly shaped aperture in a support 5 has one or more recesses 3 adapted to receive inwardly extending lugs 8 on a metal ring 9. The metal ring which may be split or continuous is fitted over the projection to co-operate with a flange 1 on the holder and to secure it. A screening can a may be secured by clamping its flange 12 between the support and the flange 1. A resilient washer 10 or spring fingers on the ring 9 may take up any slack.
Patent GB-608307-A (GB)
Title: Improvements in or relating to furniture such as wardrobes or cupboards
IPC: A47B81/00
Filed: 1946-02-19
Abstract: 608,307. Cabinets. FERNANDO, N. G. W. Feb. 19, 1946, No. 5190. Convention date, Feb. 24, 1945. [Class 52(i)] A corner wardrobe comprises two walls hinged together, doors hinged to the outer edges of the walls and detachable top and bottom members, the whole being collapsable for transport. As shown two walls 3, 3a are hinged together at 13 and doors 5, 5a are hinged to the walls. A triangular top member 1 is adapted to be .screwed into position and a bottom member 2 has edge tongues adapted to engage grooves 12 in the walls. The doors 5, 5a are arranged to fold inwardly and accordingly the frame members 7, 8 are rebated at 11 an additional rebate 11a being provided in the framings of the wall 3 to accommodate a beading 16 on the door 5a.
Patent GB-399230-A (GB)
Title: Improvements in or relating to electric current regulating systems
IPC: G05F1/644
Filed: 1932-12-08
Abstract: 399,230. Automatic electromechanical regulators ; compression resistances. GLAYSHER,. E. A., 48, Havant Road, Walthamstow, London. Dec. 8, 1932, No. 5204. [Class 38 (iv).] Constant current is maintained in a constant voltage D.C. arc or like supply circuit by connecting a current regulating resistance a in series with the arc b and a motor f controlling the resistance a, across the arc so that the total resistance in the circuit is maintained constant. A contactor d in the arc circuit closes the circuit of the motor, of a shunt field winding h in series with a variable resistance j and of a compensating field coil n connected across a bridge the arms of which are formed by the arc b, the resistance a and two resistances k, m whose relative values are determined by the normal volt drop across the arc and the resistance a. The regulating resistance comprising carbon blocks a is varied by the direct centrifugal pressure on a member r of lever p pivoted at q on a member o on the shaft of the motor f the speed of which is responsive and the. voltage across the consuming device. The blocks a are provided with pins u disposed above their centre of gravity' and are carried thereby on insulated guide rods v running longitudinally on either side of the blocks. The blocks are thus maintained in the vertical position.
Patent GB-138726-A (GB)
Title: Improved safety control apparatus for steam boilers
IPC: F22B37/42
Filed: 1919-03-03
Abstract: 138,726. Cairns, W. March 3,1919. Indicators, alarm and signal.-A pressure relief valve 10 is operated by a piston 2, which is depressed so as to open the valve when the steam pressure rises sufficiently to open a spring-pressed valve 14 in a pipe 12 connecting the space above the piston to the boiler. The space above the piston is also connected by a pipe 12<a> to a floatoperated valve allowing steam to pass when the water-level falls. A valve 18 in a steam pipe 15 opening below the piston is normally retained on its seat by the steam pressure, and is lifted by a spring when the pressure falls, thus raising the piston and closing the relief valve.
Patent GB-507198-A (GB)
Title: An improved method of and apparatus for welding
IPC: B23K11/31
Filed: 1938-05-18
Abstract: 507,198. Welding box sections for motor-vehicle frames. BUDD MANUFACTURING CO., E. G. May 18, 1938, No. 5276/39. Convention date, May 19, 1937. Divided out of 504,505. Drawings to Specification. [Classes 83 (ii) and 83 (iv)] A flat cover strip is united to the open side of a flanged channel section beam for a motor vehicle chassis by holding the beam against distortion, clamping the strip to the beam first in the centre and then at its end portions and then.welding through the mating margins of the cover strip and the beam flanges. The welding machine is fully described in connection with Specification 504,505.
Patent GB-1461451-A (GB)
Title: Separation of natural peptisable aluminium hyerosilicate  organo-complexes from minerals
IPC: B01J37/00
Filed: 1974-02-05
Abstract: 1461451 Aluminium hydrosilicate organocomplexes MINERALIMPEX MAGYER OLAJ ES BANYATERMEK KULKERESKEDELMI VALLALAT 5 Feb 1974 [12 Feb 1973] 05285/74 Headings C1A and C1B [Also in Division C5] Peptizable, natural aluminium hydrosilicate organo-complexes are separated from non- peptizable organic and/or inorganic mineral materials, and from non-peptizable natural aluminium hydrosilicate organo-complexes by (a) milling mineral material in water to 60 microns or less, (b) vigorously mechanically agitating the mixture of organic and inorganic materials in the presence of water to disaggregate the peptizable complexes to the colloidal state, and (c) separating the colloidal solution from the non-peptizable material. Peptizing agents may be present. Examples treat brown coal. The peptized complexes are of use as soil conditioners, as precipitants for the purification of drinking water and effluents, and as, or to improve, the drilling mud in deep-boring.
Patent GB-692322-A (GB)
Title: Add-subtract binary counter circuit
IPC: H03K3/37
Filed: 1951-03-05
Abstract: 692,322. Electronic counting apparatus. NORTHROP AIRCRAFT, Inc. March 5, 1951 [Aug. 18, 1950], No. 5319/51. Class 106 (i). [Also in Group XL (c)] An add-subtract multi-stage binary counter comprises a bi-stable trigger stage including a glow tube, having a gas-filled envelope 1 containing an anode 2 between two cold cathodes 3, 4, and so connected in a circuit that input pulses applied to the anode shift the glow discharge from one cathode to the other, the pulses thereby produced in the two cathode circuits being inverted and gated to obtain add or subtract carry pulses respectively. In the counting stage shown, each negative input pulse applied on line 11 produces a positive pulse across one of the resistors 16, 17 and indicating glow tubes 14, 15, negative pulses in the cathode circuits being shunted out by rectifiers 20, 21. This positive pulse is passed through a capacitor 18 or 19 and an inverting circuit comprising a capacitor 22 or 23 and a rectifier 24 or 25 to an output capacitor 35 or 36 and a gating circuit including a rectifier 33 or 34. The gating is controlled by a further glow tube 59, triggered by negative pulses on line 62, so that a positive bias potential is applied from one of its cathodes 63, 64 to an " add " or " subtract " bias line 42 or 44 connected through resistors such as 43, 45 to the gating circuits of each counting stage. Thus, for addition, the positive potential on line 42 prevents negative pulses passing through rectifier 33, the carry pulses on the output line 30 coming from the right-hand cathode circuit and rectifier 34.
Patent GB-836955-A (GB)
Title: Pressure ratio regulating system
IPC: G05D16/16
Filed: 1958-02-19
Abstract: 836,955. Fluid pressure servomotor control systems. UNITED AIRCRAFT CORPORATION. Feb. 19, 1958 [June 4, 1957], No. 5383/58. Class 135. In an arrangement for maintaining a constant ratio between reference pressures P 1'  P 2  in a duct 16 upstream and downstream respectively of a fixed-area orifice 12 and determined by the ratio of the end areas of a freely floating differential piston valve 22, the sensitivity of the system is increased by a hinged valve 14 providing a variable-area discharge orifice 28 for the duct 16 and connected to a servo-piston 30 subjected to pressure P 2 . The lower and upper ends of valve 22 are subjected to the pressures P 1 , P 2  respectively, and movement of the valve controls the supply of pressure fluid to the duct 16 from an inlet 18. Assuming that upon departure from steady-state conditions valve 14 moves to the right to increase the area of orifice 28, the resulting fall in pressure P 2  results in upward movement of valve 22 and reduction in the supply of pressure fluid, and at the same time causes movement of servo-piston 30 to the left to close valve 14 to increase the rate at which the steady state is restored. The valve 22 and piston 30 operate in the reverse manner if valve 14 moves to the left to cause an increase in pressure P 2 . The regulator may be used to receive an input signal, such as an engine speed signal, through an adjustable pivot 50 for valve 14 and to provide a corrective output signal from the servo-piston 30 to the fuel throttle valve.
Patent GB-658883-A (GB)
Title: Improvements relating to devices permitting to maintain the closing member tied to the body to be closed, in screw closing devices
IPC: B65D35/42
Filed: 1949-02-28
Abstract: 658,883. Stoppers. NADAI, A. Feb. 28, 1949, No. 5391. Convention date, June 24, 1948. [Class 125(iii)] A connection between a screw cap and the body it closes for maintaining the cap tied to the body when unscrewed travels during screwing and unscrewing either along the external thread of the body or longitudinally or helically along the inside of the cap, the connection being always concealed and between the top of the thread of the body and the bottom of the cap when the latter is unscrewed. Fig. 1 shows the connection as a protuberance 4 projecting from a ring 3 rotatable at the top of the thread on the container 2. The protuberance engages a longitudinal slot 5 in the cap 1 and when the latter is fully unscrewed it can be swung 180 degrees about the protuberance, a slot in the wall of the cap at the bottom of slot 5 being provided to clear the neck between the protuberance and the ring 3. In Fig. 7 a stationary projection 12 at the top of the thread on the container engages a helical groove (distinct from the internal screw thread) around the inside of the cap. In Fig. 9 the connecting member 16 is carried by a ring 14 carried by the cap and having a pin 15 traversing a deepened thread 13 on the container.
Patent GB-367565-A (GB)
Title: Improvements relating to sand blasting apparatus
IPC: B24C7/00
Filed: 1931-02-20
Abstract: 367,565. Sand-blast. WILSON, F. W. and TILGHMAN'S PATENT SAND BLAST CO., Ltd., Broadheath, near Manchester. Feb. 20, 1931, No. 5394. [Class 60.] In a sand-blast apparatus a tilting device n operates valve rods r, e connected by linkage g. When the device n is tilted a charge of abrasive is dropped into the chamber m, the rod r is lifted to close a pilot valve j and main valve k and the rod e is lowered to open a pilot valve a tc equalize the pres. sure in an inter. mediate chamber c and pressure chamber d. The main valve b then drops tc allow a charge tc pass to the pressure chamber. When the device n is again tilted the valves a, b are closed and the valve j, k opened, the pressure in the chamber c escapes through the valve j, and a charge passes through the valve k to the chamber c.
Patent GB-878453-A (GB)
Title: Eccentric journal mounting for rotatable member
IPC: F16C3/28
Filed: 1960-02-16
Abstract: 878,453. Printing-machines. MILLER PRINTING MACHINERY CO. Feb. 16, 1960 [Feb. 16, 1959], No. 5431/60. Class 100(2) [Also in Group XXXIV] Cylinder trips.-In an adjustable mounting, a rotatable member 22 is mounted in an intermediate annular member 16 which is mounted in a sleeve 6, the latter being rotatably adjustable in a frame 2. Series of rollers, or balls, are located between the rotatable member 22 and the member 16 and between the member 16 and the sleeve 6. Races 10, 20 and spacers 12, 12a are provided and are held in position by a nut 23 engaging a screw-threaded portion 24 of the member 22 and by a ring 13 attached by screws 14 to the sleeve 6. The annular member 16 has a concentric outer periphery 17 and an eccentric inner periphery 18 so that by angularly displacing the member 16 through an angle A, Fig. 1, the rotatable member 22 can be displaced axially relatively to rollers 28, 29. The sleeve 6 has circular inner and outer peripheries which are eccentric to each other and has an integral arm 30 which facilitates angular adjustment of the sleeve relatively to the frame 2. In an embodiment an offset printing press has the blanket cylinder 22 moved in and out of engagement with the plate cylinder 28 and the impression cylinder 29 by means of a lever 25 fastened by screws 26 to the member 16 and connected at 27 to the press mechanism so as to operate in timed relationship to the cylinders. The operative position of the cylinder 22 relatively to the cylinders 28, 29 is adjusted by angularly displacing the sleeve 6 by means of the arm 30.
Patent GB-713694-A (GB)
Title: Improvements in or relating to audio frequency amplifiers
IPC: H03F1/36
Filed: 1952-03-01
Abstract: 713,694. Valve amplifying circuits. COLE, Ltd., E. K., and BURNARD, C. L. March 2, 1953 [March 1, 1952], No. 5440/52. Class 40 (6) In an audio amplifier, frequencies above the range to be reproduced are attenuated, particularly at low volume levels, by means of a feedback path between the anode of an output valve V3 and the low potential end of the volume control potentiometer V.C. The feedback path comprises condensers C1, 2 and resistances R1, 2 forming a high-pass filter. Specification 494,024 is referred to.
Patent GB-230094-A (GB)
Title: Improvements in frame tensioning devices for artists' canvases, tapestries and the like
IPC: B44C7/02
Filed: 1925-02-27
Abstract: 230,094. Elbern, A. March 3, 1924, [Convention date]. Sewing, work-holders for.-A stretching-appliance for artists' canvases, tapestry, &c. comprises four anglepieces a, which are secured to the sides e of the stretching-frame by nails b, d, or the like. The sides of the frame are forced away from the angle-pieces by means of screw bolts c, the nails b, d being partially drawn out.
Patent GB-337323-A (GB)
Title: Photographic light-sensitive material
IPC: G03C1/09
Filed: 1930-02-19
Abstract: 337,323. Kodak, Ltd., (Assignees of Sheppard, S. E., and Wightman, E. P.). Feb. 25, 1929, [Convention date]. Emulsions and sensitive coatings.-To improve the stability of emulsions and correct any tendency to fog without impairing the sensitivity, compounds are incorporated which contain the grouping #R - X - NH where R is nitrogen- R - Y - free organic radical, and X and Y are the same or different electro-negative radicals containing sulphur, carbon or nitrogen, such as SO2, CO, =N, - NH. Such substances combine with the silver halide, particularly at the boundary of a growing nucleus or " sensitizing speck." Examples of different classes of substances are diacetamide. phthalimide, pyrrol derivatives such as succinimide; sulphamides and their derivatives, such as saccharin; ring compounds such as the pyrazolone ring, the pyrazole ring, the pyrazolodone ring and the osotriazole ring. The quantity added varies from 0.01 to 10 grams per 1000 grams of gelatin. The substances are preferably added in solution, using water or a suitable solvent miscible with water. Reference is made to Specifications 235,209 and 235,211 and to the Photographic Journal 1927, Vol. 67, p. 359.
Patent GB-215322-A (GB)
Title: Improvements relating to the automatic reversal of the motors driving kinematographic projection apparatus
IPC: G03B19/18
Filed: 1924-03-04
Abstract: 215,322. Kaye, E. J., (Assignee of Petra Akt.-Ges. f³r Elektromechanik). May 1, 1923, [Convention date]. Kinematograph apparatus. - Means tor automatically reversing the motor driving a projector comprises two indicators f<1>, f<2> secured to a shaft g, which is positively driven by a sprocket wheel s; the indicators are adjustable in position over a stationary scale h graduated in film lengths, and, by the operation of the projector, are brought into engagement with a pin e which operates the reversing means. As shown, the shaft g carries a worm wheel i engaging a worm on a shaft k driven by gear wheels r from the sprocket. Alternatively, the shaft k may carry a worm wheel engaging a worm on the sprocket.
Patent GB-549083-A (GB)
Title: Improvements in detachable cantilever bracket structures
IPC: F16L3/22
Filed: 1941-04-30
Abstract: 549,083. Brackets. EDWARD, W. G., and FROST, G. M. April 30, 1941. No. 5633. [Class 52 (v)] A cantilever bracket for cables, pipes, &c. comprises a post 10 and a detachable bracket arm 20, of girder like cross section, engaging the post at two points 15, 19 at substantially the same level, means being provided to secure the bracket arm from horizontal withdrawal when the parts are engaged. The post may be formed of metal plate of box section, the front comprising flanges 13 separated by a gap 14. The flanges 13 are notched at 15 to engage flanges on the arm 20 and the back of the post is slit to form an embossed tongue 18 to engage a bent-up part 22 at the end of the bracket arm. The arm comprises a horizontal plate 24 stiffened by angle pieces 25 and formed with a bent front end 26.
Patent GB-843956-A (GB)
Title: Improvements in or relating to voltage peak value comparison circuits
Inventor: DAVIDSON DANIEL FRASER
IPC: H01J49/02
Filed: 1957-02-21
Abstract: 843,956. Mass spectrographs. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Feb. 11, 1958 [Feb. 21, 1957], No. 5847/57. Class 40(3). [Also in Group XXXVI] A mass spectrometer (not shown) has a collector plate 1 receiving an ionized beam which is scanned by a magnet winding 2 excited through current stabilizer 3 from a scanning voltage generator 4; the plate 1 being connected to an amplifier 5 having feedback through resistor 7 switchable at 9 to a tap on output potentiometer 8 or to the entire output, which is fed through D.C. amplifier 6, series diode 10, and changeover switch 11 to charge either of capacitances 12, 13; which are differentially connected across valve voltmeter 14. An amplifier 18 excited from amplifier 5 operates relay contacts 16 just before peak output to charge capacitance 15 from either capacitance 12 or 13 and then to discharge into resistor 17. Switches 9, 11 are operated by synchronizer 19 responsive to flux variation of magnet 2. In measurement of isotope abundance ratio two isotope beams of different mass number are scanned over plate 1 and generate corresponding pulses representing respective isotope abundances. Immediately before arrival of the larger pulse, switches 9, 11 operate in synchronism with the scan to connect the amplifier feedback path direct to its output to reduce gain to a fixed level, and to connect capacitance 12 to be charged from diode 10. On arrival of the smaller pulse, switches 9, 11 change over to reduce the amplifier feedback to that from potentiometer 8 and to connect capacitance 13 to be charged; the difference voltage indicated by valve voltmeter 14 being zeroized by adjustment of potentiometer 8 of the amplifier feedback during the smaller pulse derived from the scan of the less abundant isotope beam; the amplifier gain ratio during scans of the isotope beams and thus the isotope abundance ratio being indicated by the potentiometer setting. To remove errors due to correlated variations in magnitude of the isotope beam pulses, relay contacts 16 discharge each capacitance 12, 13 into capacitance 15 by a small fraction of the total charge just before the peak voltage of each scan and discharge capacitor 15 into resistance 17 as the peak output of amplifier 5 falls to zero.
Patent GB-535512-A (GB)
Title: Improvements in electric discharge tubes comprising a plurality of mercury electrodes
IPC: H01J13/34
Filed: 1940-04-01
Abstract: 535,512. Metal-vapour converters. PHILIPS LAMPS, Ltd. April 1, 1940, No. 5870. Convention date, April 3, 1939. [Class 39 (i)] [Also in Group XXXV] In a full-wave rectifier or other device having two or more mercury electrodes which serve alternately as anodes and cathodes the temperatures of the electrodes are so controlled that the mercury is maintained at a constant level. Fig. I shows an arrangement in which the containers for the electrodes 1, 2 are fitted with auxiliary electrodes 5, 6 ; if the mercury touches either of the electrodes a circuit is completed through the appropriate secondary of the transformer 7 and one of two heating coils 3, 4 surrounding the electrodes. Alternatively the circuits may operate a valve controlling the supply of cooling liquid to jackets on the electrode vessels, In a further modification the connections to the coils 3, 4 are controlled by a relay operated by a thermocouple the junctions of which are in contact with the walls of the electrode containers at the desired level. In another modification bimetallic strips set close to the walls of the vessels operate a valve controlling a current of cooling air.
Patent GB-1093231-A (GB)
Title: Improvements relating to vacuum switches
Inventor: KENNEDY ERNEST
IPC: H01H33/662
Filed: 1964-02-12
Abstract: 1,093,231. Vacuum switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 11, 1965 [Feb. 12, 1964], No. 5888/64. Heading H2B. In a vacuum switch having a shield 13 surrounding the contacts, the shield is supported by means which are located in position in the switch by engagement with a groove 19 provided in the inner surface of a ceramic electrically-insulating part 2 of the switch envelope and extending circumferentially around the envelope. The means may comprise a plurality of members 18 each having an end secured to the shield and an end secured to a resilient split metal ring 17 which is sprung into the groove. Glass may be fused across adjacent regions of the support means and the ceramic part which may be of porcelain.
Patent GB-382842-A (GB)
Title: Improvements in the manufacture of bituminous products
IPC: C10C3/02
Filed: 1932-02-27
Abstract: 382,842. Pitch &c. LECHLER, P., 50, Kronenstrasse, Stuttgart, Germany. Feb. 27, 1932, No. 5932. [Class 55 (ii).] Petroleum asphalt is treated with a catalyst such as sulphuric acid, aluminium chloride, chlorsulphonic acid, zinc or ferric chloride, sulphur chloride, phosphorus trichloride, or phosphorus pentachloride, so as to polymerize unsaturated hydrocarbons contained therein. The product may be " cut " with solvents to produce an anti-corrosive paint.