baber/WOPTO huggingface dataset:
Patent GB-434938-A (GB)
Title: Improvements in or relating to electron discharge device circuit arrangements
IPC: H03L7/24
Filed: 1935-05-01
Abstract: 434,938. Valve generating circuits. SOC. FRANCAISE RADIO ELECTRIQUE, 79, Boulevard Haussmann, Paris. May 1, 1935, No. 13018. Convention date, May 15, 1934. [Class 40 (v)] Valve generators of the dynatron type are provided with means for maintaining constant amplitude of the generated oscillations, and are synchronized in frequency by an external source operating at the desired frequency or a submultiple thereof. The circuit comprises a tetrode valve T with the outer grid maintained at a fixed positive voltage V1, and with a lower positive voltage V2 applied through the oscillatory circuit LC to the plate P. The oscillations generated are applied through a condenser C1 to a rectifying circuit comprising a rectifier D, a voltage source V3, a resistance R1 and a resistanceshunted condenser R2 C2. When the oscillatory amplitude rises beyond the voltage of the source V3, the rectifier D charges the condenser C2 and applies a negative voltage to the inner grid G, thus giving a constant amplitude. The lead to the inner grid G includes the synchronizing source S operating at the desired frequency or a submultiple thereof. Provided that the tuning of the circuit LC approximates to the frequency of the source S or a harmonic thereof, the frequency of the oscillations generated is accurately determined by the source S. The rectifier D may be a diode in the same envelope as the tetrode T.
Patent GB-654626-A (GB)
Title: Improvements in and relating to magnetrons
IPC: H01J25/587
Filed: 1946-04-30
Abstract: 654,626. Magnetrons. BRITISH THOMSONHOUSTON CO., Ltd. April 30, 1946, No. 13047. Convention date, Dec. 24, 1942. [Class 39 (i)] The anode of a magnetron comprises an annular member 5 supporting a number of radial vanes 7 of uniform thickness and a circular conductor lying in grooves in selected vanes to couple certain of the resonators together. There may be two circular conductors 41, 42, each connecting together alternate vanes and they may make a sliding fit in grooves in the vanes they connect and a clearance fit in grooves in the vanes they do not connect. The vanes 7 are preferably made separately from the annular member 5 and fitted in slots in the annular member. The thickness t of the vanes is preferably equal to or greater than the distance d between the extremities of the vanes at the ends facing the cathode. Specification 588,916 is referred to.
Patent GB-475039-A (GB)
Title: Process for treating textiles
IPC: C07C279/26
Filed: 1936-05-08
Abstract: Diguanides having the formula H2N.C : NH.NH.C : NH.NR1R2 wherein R1 is hydrogen or a hydrocarbon or substituted hydrocarbon radical, and R2 is a hydrocarbon or a substituted hydrocarbon radicle are used in aqueous baths for the treatment of textile fibrous materials.  In examples: (1) viscose artificial silk is improved by treatment in a bath containing octodecyl diguanide; (2) an aqueous emulsion of castor oil formed by means of lauryldiguanide is used to soften and lubricate textile fibres; (3) sized cotton shirtings are wetted by means of a solution of isopropyldodecyldiguanide.  Diguanides are prepared by the action of a salt of a primary or secondary amine upon dicyandiamide.  Specification 448,796 is referred to.ALSO:Diguanides having the formula H2N.C : NH. NH.C : NH.NR1R2 wherein R1 is hydrogen, or a hydrocarbon or substituted hydrocarbon radicle and R2 is a hydrocarbon or a substituted hydrocarbon radicle are used as emulsifying agents.  In an example, an aqueous emulsion of castor oil is prepared by means of lauryldiguanide.
Patent GB-139697-A (GB)
Title: Improvements in shuttles for weaving looms
IPC: D03J5/24
Filed: 1919-05-26
Abstract: 139,697. Matthews, J., Hornby, F., and Bearsley, E. May 26, 1919. Shuttles.-A hand-threading shuttle has a plate 2 let into a side wall, the plate 2 having a beak 3 integral therewith, and being formed with an eye 8 and a restricted slot 7 leading thereto from the oblique edge of the beak. The end of the beak is positioned in a recess 5 in front of two slots 10, 11 formed on the shuttle to guide the thread on to the beak, the slot 10 being inclined downwardly towards the eye, and the slot 11 vertical. The thread, when pulled down the beak, presents a loop at the eye, which loop can then be pulled out.
Patent GB-131973-A (GB)
IPC: F41A9/83
Abstract: 131,973. Case, F. M. July 16, 1918. Cartridge magazines.-Relates to apparatus for filling machine-gun magazines, particularly those used in the Lewis gun, and consists in providing a feeding carrier arranged between the usual shoot and the magazine to be filled, the carrier rotating about the same axis as the magazine and being provided with radial compartments for the cartridges similar to those of the magazine. The invention is shown applied to filling a Lewis gun magazine, the centre block 1 of which is attached by the usual catch 15 to a hollow post 21 which is secured to the frame 31 of the filling machine by a nut 29, a push-rod 26 being provided for acting on the catch to facilitate removal of the magazine. The magazine pan 6 has the usual radial cartridge compartments which register with similar cartridge compartments 39 in a feeding carrier 37. The pan and carrier are rotatable together round the centre block 1, being interconnected by a member 43. Between the pan and the carrier is arranged a fixed plate 33, portions 35 of which are bent to form a. helical guide to transfer the cartridges from the carrier to the pan as they roll round the plate 33 when the pan is rotated. Extending from the frame 31 is a sector plate having one or more openings over which are arranged shoots or hoppers for feeding cartridges to the carrier. If desired, the pan of the magazine may be held stationary, the centre block and shoots then rotating relatively to the pan and carrier. An unloading attachment having plates 76, 77 and a helical guide 80 may be carried by the plate 33 so that, by rotating the magazine pan in the reverse direction, the cartridges are unloaded therefrom.
Patent GB-132752-A (GB)
IPC: B61D27/00
Abstract: 132,752. Charpentier, J. May 8, 1919. Heating vehicles.-In an apparatus for heating railway, tramway, and like vehicles, of the kind comprising a stove 1, Figs. 1 and 2, fed from outside and surrounded by an air chamber 7, a second air chamber 9 surrounding the chamber 7 is provided, and the two chambers are independently connected by means of pipes 10, 11 to different compartments of the vehicle. The chamber 9 is located between the outer wall 8 of the chamber 7 and a cylindrical casing 3 by which the stove is connected to the framework of the vehicle. Air is introduced into the chamber 7, irrespective of the direction of the wind relative to the vehicle, through a pipe 13 having a T- head 14 which is parallel with the longitudinal axis of the vehicle and contains a hinged register 15, Fig. 3, adapted to abut against one or other of two stops 16, 17. The chamber 9 is provided with two valves 19, 20 each comprising a hinged gravity flap, one or other of which is opened automatically by the pressure of the wind.
Patent GB-417568-A (GB)
Title: Improvements in and relating to protecting sockets for sparking plugs
IPC: H01T13/54
Filed: 1934-05-03
Abstract: 417,568. Sparking-plugs. METAILLER, R. L., 54, Rue Louis Blanc, Courbovoie, France. May 3, 1934, No. 13431. Convention date, May 12, 1933. [Class 7 (iv).] An intermediate member between the sparking-plug and engine cylinder is formed with openings, baffles, or a bridge piece flush with the wall of the combustion space. The baffles or protecting end may be integral with, or threaded into, the end.
Patent GB-681241-A (GB)
Title: Improvements in or relating to apparatus for use in filling cans and like receptacles with liquids
IPC: G01F11/32
Filed: 1947-05-20
Abstract: 681,241. Delivering measured quantities of liquids. FARRER, F., and FARRER, L: June 21, 1948 [May 20, 1947]. No. 13478/47. Class 106 (v). [Also in Group XVII] In apparatus for filling cams and like receptacles with liquid (see Group XVII), liquid is supplied from a main tank 1 by way of valves 27 to a row of measuring chambers 2 having valve-controlled outlets 36 beneath which cams are positioned. Rotation of a shaft 35 by a handle (not shown) causes a cam 34 to act on a lever 31 so as to raise a tubular shaft 28 carrying. a valve 27 and permit liquid to flow into each chamber 2 from a tank 1. Rotation of shaft 35 in the opposite direction then causes a cam 43 to act on a lever 41, thereby raising a shaft 38, slidable in shaft 28, and opening a valve 37 to allow the liquid in chamber 2 to flow into the can positioned beneath, air being admitted to the chamber through an air inlet hole 44 and between the shafts 28 and 38 when the shaft 38 is raised. Tank 1 and chamber 2 may be heated for use with viscous or solidifying liquids.
Patent GB-1382870-A (GB)
Title: Fertilisers
Inventor: MUELLER WALTER DR
IPC: C05C1/02
Filed: 1972-03-22
Abstract: 1382870 Granular fertilizers containing ammonium nitrate CHEMIE LINZ AG 22 March 1972 [29 March 1971] 13504/72 Heading C1B A granulated, sprayed or prilled fertilizer of improved storability comprises a predominant proportion of ammonium nitrate, either as free ammonium nitrate or calcium ammonium nitrate, homogeneously admixed with calcium sulphate and optionally up to 10% by weight of ammonium sulphate, wherein the calcium sulphate is present in an amount of 0À5 to 10% by weight based on the total weight of fertilizer, and contains at least 50% by weight of reactive anhydrite III. The granules may be prepared from a melt containing up to 5% by weight of water.
Patent GB-856936-A (GB)
Title: Improvements in or relating to television apparatus
IPC: H04N5/202
Filed: 1957-04-29
Abstract: 856,936. Television. FERNSEH G.m.b.H. April 29, 1957 [April 28, 1956], No. 13549/57. Class 40(3). [Also in Group XL(c)] "Gamma-control" of a television signal is effected by subjecting only the lower-frequencies thereof to a suitable non-linear amplifying process. A signal which is corrected in this manner produces a satisfactory picture since the human eye appreciates correct contrast only in areas of low detail and the arrangement has the advantage, over "gamma-control" circuits in which the full frequency range is non-linearly amplified, of reduced "noise" distortion of the picture due to the effect of the steep slope of the non-linear amplifier characteristic on signals of low amplitude. Fig. 3, shows one embodiment of the invention in which the television signal is supplied via a L.P. filter 21 (passing up to 5 mc/s.) and a linear amplifier stage 23, directly to one grid of a double-triode stage 22 and, via a delay line 32 which has a linear frequency characteristic over the range 0-5 mc/s, to the other grid of valve 22. When the anode voltages of the latter are suitably adjusted by means of potentiometer 28 the signal developed across cathode resistor 27 has a falling frequency characteristic whilst a signal having a complementary frequency characteristic is developed at point 34. The former signal is supplied via a linear amplifier 35 to a "gamma" amplifier 36, the input to the latter being clamped to its reference intervals by a clamp 38, and the gamma corrected output fed to a mixer stage 37 in which it is combined with the signal from point 34 after linear amplification in 39. The output of 37 then consists of the whole signal the lower frequencies of which have been gamma corrected. In an alternative arrangement for carrying out the invention the signal having the falling frequency characteristic (i.e. that which is subjected to the non-linear amplifying process for the purpose of gamma-correction) is derived by means of a L.P. filter 60 (Fig. 5) and supplied to the "gamma" amplifier 64 via a'linear amplifier 63 and clamp circuit 68. The signal having complementary frequency characteristic is developed across the cathode resistor of valve 50 by combining in the latter the signal output of filter 60 with the original signal derived from the cathode of a phase inverter stage 56 and fed to valve 50 via a delay equalizing circuit 61. The signal at the cathode of valve 50 is then supplied via a linear amplifier 66 to a mixer stage 65 in which it is combined with the output of the "gamma" amplifier 64 to provide the required corrected signal at point 67. Arrangements for varying the degree of gamma correction of the complete signal by combining the gamma corrected signal, derived as above, and the complete (uncorrected) signal, linearly amplified, in variable proportions, are described with reference to Figs. 7a and 7b (not shown).
Patent GB-1065201-A (GB)
Title: Containers for pressurised fluids
Inventor: REYNOLDS ANTHONY ARTHUR
IPC: F17C13/04
Filed: 1963-04-05
Abstract: 1,065,201. Compressed gas containers. REYNOLDS TUBE CO. Ltd. March 31, 1964 [April 5, 1963], No. 13596/63. Heading F4P. The internally screw-threaded tubular neck (12), Fig. 1 (not shown), of a compressed gas container 1 is engaged by a plug (13) located wholly within the neck and containing a discharge valve (22) operable by means inserted into the open mouth of the neck and serving to connect ducts (21, 19, 16) within the plug (13). The valve member (22) is unseated by gas pressure on unscrewing a mushroom-shaped member (24) mounted in a nut (23). A conventional bursting disc (28) allows pressure to be relieved through bores (30), Fig. 2 (not shown). In a modification the pressure of gas acting on the inner side of the valve (239), Fig. 4 (not shown), through duct (216) is reduced by an orifice (234) controlled by reducing valve (132) biased to its open position by spring (136) against the closing action of gas pressure admitted to its underside through a bore (133a) in the stem (133). The discharge valve (239) is unseated against a spring (240) and the gas pressure by a bayonet-type actuator (242).
Patent GB-505400-A (GB)
Title: High frequency radio repeater
IPC: H03H7/48
Filed: 1938-05-06
Abstract: 505,400. Wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. May 6, 1938, No. 13615. Convention date, June 15, 1937. [Class 40 (v)] Relates to repeaters in which interaction between the receiving and retransmitting aerials is prevented by the employment of loop circuits of the kind described in Specification 491,359. In one embodiment, Fig. 4, the output of an amplifier 208 is connected to a. transmitting aerial 201 and its input to the nodal point 225, 227 on a loop circuit made up of the radiation path C between the aerial 201 and a receiving aerial 202 and a line joining the latter with the output of the amplifier 208. In order that the point 225, 227 may be a voltage node for the amplifier output traversing the loop, the electrical length of the. branches on either side thereof may be adjusted by the loop conductors 229, 230, and the adjustable attenuators 408, 204 andreflected energy produced by the attenuator 408 may be partially absorbed by resistances 231. One or both of the aerials 201, 202 may be directional. In another embodiment, , Fig. 5, the two branches of the loop each contain a radiation. path E, F, respectively, two receiving aerials 302, 303 being provided and a transmitting aerial 301, the latter being connected to the output of an amplifier 309 whose input is connected to the nodal point 305, 307 in the line joining the two receiving aerials 302, 303. The receiving aerials may form a directive array or one of them may be efficient to receive radiation from the transmitting aerial 301 only.
Patent GB-143535-A (GB)
Title: Improvements in or relating to safety razors or analogous cutting instruments
IPC: B26B21/18
Filed: 1920-05-18
Abstract: 143,535. Ames, B. July 2, 1915, [Convention date]. Holding-tools.-The operating parts of a cutting-instrument are held in the assembled position for use, solely by magnetic attraction. The invention is shown applied to a safety-razor of which the handle 1 comprises a horseshoe magnet with legs 2 terminating in rings 4 of soft iron and bridged by a guard-piece 5 of brass or other non-magnetic material held in position by screws 3. Into the head of each screw 3 fits a roundnosed pin 6; a thin double-edged blade 7 and a, top cap 8, of soft iron, have openings which register with the heads of the pins.
Patent GB-315938-A (GB)
Title: Improvements in or relating to electric lighting systems
IPC: H01R24/58
Filed: 1928-05-09
Abstract: 315,938. Mackley, A. H., and Slade, L. W. May 9, 1928. Supplying measuring devices.-A lighting system particularly for motor vehicles comprises a battery a with a lamp l<1> in parallel, which may be inserted in the lighting circuit or removed therefrom without interference with other lights. A resistance is automatically substituted for the removed accumulator and lamp. The accumulator carries a socket element S with contact members 5, 6 the former making a spring fit with a sliding contact member 4 on a fixed relay element P connected with the lighting system and the latter engaging a central contact member 1. The sliding contact 4 when the coupling elements are engaged, in addition to putting the accumulator in series in the lighting circuit connects together concentric contact members 2, 3 between which a resistance r is connected, but upon separation of the elements the member 4 connects contacts 1, 2 completing the lighting circuit through the resistance r.
Patent GB-1008388-A (GB)
Title: Magnetic liquid-level-control device
IPC: H01H36/02
Filed: 1962-04-10
Abstract: 1,008,388. Machines with permanent magnets; magnetic switches. ROBERTSHAW CONTROLS CO. April 10, 1962 [April 12, 1961], No. 13834/62. Headings H2A and H2B. [Also in Divisions Gl and G3] The level of a liquid in a container T is controlled by a control device 5 comprising a non- magnetic tube 22 having a magnet 32 mounted on its exterior and coaxial therewith and a magnetic shunt 110 which moves along the longitudinal axis of the tube and inside the tube under the control of the level of the liquid, the arrangement being such that the shunt diverts sufficient of the magnet's flux from its associated armature 62 to cause movement of the latter and operation of a switch. As shown in Figs. 1, 2 a float 18 is connected via a piston rod 114 to piston 112 of ferrous material such that as the level of the liquid in the container rises and falls the piston moves upwards and downwards in the tube 22 so affecting the flux in the airgap 41 between the magnet 32 and its associated armature 62, with the result that the armature is held or released dependent upon the position of the piston. The armature 62 of the relay 30 is secured to an actuator plate 64 pivoted with a flange 42 of pole shoe 38 by means of a hinge pin 58 carried in a groove 66 extending across the face of the actuator plate 64 and clamped in position by the end of the overlapping end of the armature 62. The armature is biased in a clockwise direction by a pair of springs 102 mounted on a clamp 78 and its pivotal movement is limited by a pair of screws 74, 76. When the armature is caused to move towards the magnet 32 a pair of screws 72, passing through the actuator plate, render switching means 98 operative. The latter are connected to element 6 which controls the flow of liquid into the container T. In the embodiments of Figs. 6, 7 (not shown) switching means are dispensed with and a pneumatic switching device is used.
Patent GB-353114-A (GB)
Title: A door warning signal for road vehicles
IPC: E05B65/12
Filed: 1930-05-06
Abstract: 353,114. Road-traffic signals. BAZELEY, J., 12, Markham Road, Bournemouth. May 6, 1930, No. 13843. [Class 118 (ii).] A warning signal indicating to passing vehicles that a vehicle door is open comprises a lamp H and pivoted switch member B carried on the door A of the vehicle, the spring-urged member B being restrained by the door frame D when the door is closed. When the door opens, the member B forces a terminal F against the lamp contact, and the lamp is illuminated.
Patent GB-679104-A (GB)
Title: Improvements in or relating to x-ray systems
IPC: H05G1/36
Filed: 1951-06-13
Abstract: 679,104. Supply system for X-ray tubes. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. June 13, 1951 [July 12, 1950], No. 13984/51. Class 38 (iv). To render the space current independent of variations in anode voltage, the cathode heating transformer 15 of the X-ray tube 10 is supplied through a saturable reactor 18, the impedance of which is varied by a valve 20 controlled by a D.C. voltage proportional to the voltage applied to, or selected for application to, the primary winding of the H.T. transformer 7. The D.C. control voltage, which appears across a potentiometer 24, is obtained over a rectifier 29 from a transformer 26 connected across the output side of an autotransformer 5 through which the transformer 7 is fed. The space current is adjusted by a potentiometer 22 controlling the grid bias voltage of valve 20.
Patent GB-202400-A (GB)
Title: Improvements in safety hooks for chains, ropes or couplings, also applicable as a puzzle
IPC: F16B45/02
Filed: 1922-05-18
Abstract: 202,400. Parkes, T. J. May 18, 1922. Puzzles.-A hook 22 of the type shown, having suspension links 23, 27 connected to an eye 21, has a closing- link 20 engaged with a slot 26 in the point 28 of the hook. A flattened portion 24 of the link 20 can be passed through the slot 26 only when the links 23. 27 have been correctly manipulated.
Patent GB-1491213-A (GB)
Title: Wire enamelling machinery and the use thereof
IPC: H01B13/06
Filed: 1974-03-29
Abstract: 1491213 Enamelling wire BICC Ltd 27 March 1975 [29 March 1974] 14090/74 Heading D1L Wire is coated with a solventless or semisolventless enamel by passing the wire 1, a plurality of times, downwardly through molten enamel contained in trough 3 mounted on the top of oven 5, the wire passing directly into the oven via die 4. The wire may also be further coated as it leaves the bottom of the oven.
Patent GB-1112185-A (GB)
Title: Ceiling suspension system
Inventor: GWYNNE THOMAS
IPC: E04B9/26
Filed: 1966-03-30
Abstract: 1,112,185. Suspended ceilings. BRITISH GYPSUM Ltd. 1 March, 1967 [30 March, 1966]. No. 14163/66. Heading E1W. A mineral wool or fibre-board tile or panel 14 is supported on the flanges 11 of spaced supporting members 10 by spring steel clips 16 having pointed prongs 17 pressed into the tiles and resilient crescent shaped portions 18 which are pressed back by the flanges 11 as the tile is offered up and spring into place over the flanges when the tile is in place. One of the transverse edges of the tile has an edgeways facing groove which engages the flange of an intermediate supporting member extending between the flanges 11.
Patent GB-1320101-A (GB)
Title: Boiler for the production of hot water
IPC: F24H1/28
Filed: 1971-05-11
Abstract: 1320101 Water boilers SOC D'ETUDE ET DE CONSTRUCTION DE CHAUDIERES EN ACIER SECCACIER 11 May 1971 [5 March 1971] 14167/71 Heading F4A A water boiler using liquid or gaseous fuel has a front chamber 1 operating by radiation and a coaxial rear chamber 2 operating by convection and three spaced annular water chambers 12,  15, 5 which define three concentric flow paths  16, 17, 4 of a flue gas circuit. Front chamber 1 has a front door 25 fitted with a burner, and a closed end-plate 6. The combustion gases pass from chamber 1 along annular passage 16 into rear chamber 2 having a closed end wall 7. Water enters through inlet 18, passes forwardly through inner annular chamber 12, returns along outer annular chamber 15 and is discharged at 21. Simultaneously the incoming water passes from inlet 18 to an annular chamber 5 surrounding the exhaust 4, and therefrom into outer chamber 15. The partition walls 6, 7 are supported by struts 10 and water circulates between them through orifices 9. An anti-explosion valve 30 is fitted to a rear door 26 of the boiler which is surrounded by an outer shell 14 and insulated jacket 28 disposed eccentrically to the boiler axis, Fig. 2 (not shown). In another embodiment, Figs. 3, 4 (not shown), the two heating chambers 1, 2 are formed by separate inner shells (3a, 3b).