baber/WOPTO huggingface dataset:
Patent GB-616816-A (GB)
Title: Improvements in or relating to velocity-modulated discharge tubes
IPC: H01J25/32
Filed: 1946-03-09
Abstract: 616,816. Velocity-modulated tubes. PHILIPS LAMPS, Ltd. March 9, 1946, No. 7440. Convention date, June 25, 1941. [Class 39 (i)] An electron beam, velocity-modulated in control system 5, 6, 7, Fig. 1, passes to a brake field electrode 10 which is perforated and is held at such a potential that the slower electrons are reflected back into the control system, while becoming bunched, so as to reduce the effective damping of the resonant circuit 8 connected to this circuit, while the faster ones pass on through the aperture and give up their energy to an output circuit 12 connected between the electrode 10 and a collector electrode 11. The reflected electrons are again reflected near the cathode by reflector 4, and these electrons thus oscillate to and fro, giving up energy to the control system each time, the transit time from the centre of electrode 5 to either reflector and back being for this purpose chosen to be one or more periods of the control oscillation. Magnetic focussing by a coil or a permanent magnet is employed to prevent electrons straying from the beam before they have made a sufficient number of transits. The transit time between electrodes 10 and 11 for optimum energy transfer by the faster electrons is one or an odd multiple of a halfperiod of the oscillation. The circuits 8, 12 may be coupled inductively-or the same circuit may serve both functions. In a modification the accelerating electrode 3 is dispensed with, the boundary electrode 6 taking its place. The control electrode 5 may be divided into two parts 5a, 5b, Fig. 5, oscillating in antiphase ; these electrodes may be cylinders or, as shown, discs connected to opposite conductors of a Lecher wire circuit 16, to one end of which output electrode 11 is also connected; in this arrangement the boundary electrodes are omitted, so that a weak velocity-modulating field extends right up to the reflectors 4, 10. The energy may be extracted from the 'faster electrons by an electrode system 17, 18, 19, Fig. 6, similar to the control system, the spent electrons being collected at low velocity by collector system 21, 22. Alternatively these electrons may be reflected back into the output system by a reflector 25, Fig. 7, and multiple reflections may also occur in this system; as shown, the control and output systems are twin cylinders 5a, 5b, 17a, 17b, oscillating in antiphase, but the disc arrangement of Fig. 5 may also be used for both systems. When used as an amplifier, the reduction of damping by the reflected electrons is adjusted to be less than that required for self-sustained oscillations, and the control signal is applied to the electron gun or to the reflecting electrode.
Patent GB-509799-A (GB)
Title: Improvements in and relating to prismatic glassware
IPC: F21V3/04
Filed: 1938-03-10
Abstract: 509,799. Glass manufacture; globes for street &c. lamps. GENERAL ELECTRIC CO., Ltd., and CHRISTOPHER, J. March 10, 1938, No: 7511. [Class 56] [Also in Group XI] A prismatic glass bowl or dome for a lighting fitting is formed with a wire netting or like reinforcement within the body of the glass.
Patent GB-526141-A (GB)
Title: Improvements relating to furnaces
IPC: C21D9/00
Filed: 1939-03-09
Abstract: 526,141. Furnace casings. INTERNATIONAL FURNACE EQUIPMENT CO., Ltd., and JONES, W. H. March 9, 1939, No. 7620. [Class 51 (ii)] To prevent the passage of air through cracks which may develop in tunnel furnace walls, 'the walls are enclosed in sheet metal casings formed by panels a having flanged edges c with their edges turned over to form grooves d engaging with the straight flanges of U-shape sheet metal pillars e. The pillars e at the ends of the furnace have one flange extended at f to embrace the ends of the walls. The pillars may be provided with grooves instead of the panels. The casings on opposite sides of the tunnel furnace are held in position by bolts passing through the casings and brickwork and secured by nuts and springs.
Patent GB-565309-A (GB)
Title: Improvements in or relating to devices for indicating and/or controlling a predetermined level of liquid in a container
IPC: F22B37/42
Filed: 1943-05-13
Abstract: 565,309. Signalling or controlling liquid levels. BRITISH THERMOSTAT CO., Ltd., and SHERLOCK, J. E. May 13, 1943, No. 7630. [Class 123 (i)] [Also in Group XXXVII] A casing 1, shown in sectional elevation, is connected by pipes 2 to a boiler, and is provided with thermally expansible metal tubes 4, 5 one above the other, fixed to the end wall 6. The opposite ends slide in a guide 7 fixed to the end wall 9, and each tube contains a push-rod 11, 12 of " Invar " (Registered Trade Mark), the free ends of which actuate an electric switch 25. The switch mechanism comprises a rocking lever 19 pivoted at 20, surrounding a fixed member 31 and integral with arms 21, 22 engaged by the rods 11, 12. The free ends of arms 22 carry adjustable elements 23 for operating a rod 24 which controls the switch 25 mounted on a fixed bracket 26. The pivot 20 is carried by a sliding member 27 which is pressed by spring 28 to maintain the arms 22 in engagement with rods 11, 12. The tube 5 is constantly subject to an electric heater 10, but approximates in temperature to tube 4 so long as it is submerged. If uncovered by a fall of water level, tube 5 rises in temperature and actuates its rod 12 to move the switch rod 24. Variations in ambient temperature of the rods 4, 5 do not operate the switch. The switch controls a pump, valve, or alarm device.
Patent GB-511761-A (GB)
Title: Improvements in or relating to nozzles for vacuum cleaners
IPC: A47L9/02
Filed: 1939-03-09
Abstract: 511,761. Vacuum-cleaner nozzles. ELECTROLUX, Ltd. March 9, 1939, No. 7652. Convention date, March 12, 1938. [Class 99(i)] A vacuum-cleaner nozzle comprises a socket 10 for connection to a suction conduit, a nozzle body 22 pivotally mounted on the socket, and a sleeve 16 having a slot extending along the whole or part of its length whereby the sleeve can be slid or snapped on to the socket, the sleeve having an opening 19 for suction air. The sleeve is wholly or in part circular in cross section and bears in a part-cylindrical channel in the nozzle body. In the construction shown, the nozzle body is held against the sleeve by bolts 26 passed through lugs 25 on the nozzle body and screwing into lugs on the socket. The bolts 26 may be replaced by a self-acting, locking-device, such as a spring-pressed locking- bolt. When the nozzle body is removed, the socket 10 and the attached sleeve 16 may be used as a nozzle for draperies, curtains &c.
Patent GB-415495-A (GB)
Title: Improvements in and relating to loudspeakers
IPC: H04R9/02
Filed: 1933-03-14
Abstract: 415,495. Loud - speakers. MAGNAVOX CO., Oakland, California, U.S.A.- (Assignees of Dempster, B. ; 1524, Scenic Avenue, Berkeley, California, U.S.A.) March 14, 1933, No. 7704. Convention date, March 14, 1932. [Class 40 (iv).] The energizing coil 15 of a moving coil loud-speaker is arranged as shown to abut against the rear of the magnetic frame member 10 and against the outer polepiece 12, an annular recess 17 being provided in the coil 15 to allow of the necessary axial movement of the moving coil 13.
Patent GB-956356-A (GB)
Title: Improvements in or relating to signalling methods between subscriber's sets and exchage
Inventor: KNIGHT RONALD GEORGE
IPC: H04Q1/446
Filed: 1960-03-04
Abstract: 956,356. Subscriber's equipment. STANDARD TELEPHONES & CABLES Ltd. March 3, 1961 [March 4, 1960 (2)], Nos. 7721/60 and 7722/60. Drawings to Specification. Heading H4K. In a system in which alternating currents selected by a key-set are sent from a subscriber's substation to the main exchange to signal the wanted number, these signals may also be used to signal the class of service of the subscriber. The class of service may be placed under manual control of the subscriber. In one embodiment for two-party lines two oscillators, powered from the main exchange, are provided. One oscillator provides frequencies E, F, G, H and the other providing frequencies A, B, E or C, D, E for X and Y party strappings. Digits 1 . . . 8 are sent as a combination of one of frequencies E, F, G, H with one or other of A, B in the case of an X-party and with one or other of C, D for Y-party. Frequency E is used only on 9 and 0 or 0 (barred trunks) where X- and Y- party discrimination is unnecessary. The key 0 produces frequencies G, E or H, E according as the manually operated barred trunks key is or is not thrown. In a second embodiment three oscillators are used, two giving the ordinary two-out-of-five frequency code for the digits and two extra frequencies F and G being provided for X and Y party discrimination, a further combination involving F and G being used for 0 (barred trunks). In a third embodiment frequencies are arranged in narrowly spaced pairs. Digit determination can then be effected using wide-band filters capable of accepting either of a pair, and X- or Y-party discrimination being then effected using narrow band filters.
Patent GB-750999-A (GB)
Title: Improvements relating to fluid pressure braking systems
IPC: B60T17/02
Filed: 1954-03-17
Abstract: 750,999. Fluid-pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., and SIMMONS, A. W. Feb. 23, 1955 [March 17, 1954], No. 7722/54. Class 103 (1). In a closed circuit fluid pressure braking system, a vent device is provided in the return circuit from the brake or hydraulic master cylinder actuating means-and the low-pressure side of the compressor such that during a release of the brakes, fluid is permitted to leak slowly to atmosphere so that a rapid rise in exhaust pressure is prevented when the brakes are operated after the compressor has ceased to function. In the embodiment illustrated, a compressor 1 is supplied with air at its low pressure side via strainer 2 and check valve 3 and after compression the air is supplied through check valve 4 to a reservoir 5 fitted with a safety valve 6. The reservoir 5 supplies compressed air to a pedal-operated servomotor 7 which operates a hydraulic brake system. When the brakes are released, air is vented from the servomotor 7 through conduit 9 provided with a small vent device 10 which permits air under pressure to leak from conduit 9 to atmosphere. The vent device 10 prevents a back pressure being exerted on the servomotor 7 and thereby reducing the force applied to the brakes when the compressor is out of action.
Patent GB-403368-A (GB)
Title: Improvements in or relating to magnetic cores for high frequency inductance coils and transformers
IPC: H01F1/24
Filed: 1932-03-16
Abstract: A magnetic core material for radio frequency inductance coils and transformers comprises a compressed mass of finely divided magnetic material bound together by an insulating binder, the magnetic particles being fine enough to pass through a 400-mesh sieve and insulated from one another by a solid insulating material in addition to the binder.  The magnetic material may be prepared by heating finely-divided pure iron oxides in a stream of hydrogen.  The iron particles so prepared should be about 5 microns in size.  The iron powder is mixed with an insulating material which does not chemically unite with the iron such as China wood oil varnish or a solution of phenol resin in acetone, dried in air, and subsequently baked so that the particles remain loose, each particle being individually coated. The insulated particles are then mixed with an insulating binder such as phenol resin, natural resin, or synthetic gums, either in dry powdered state or in solution, the amount of binder being such that the compressed core will contain about 10 per cent of inert material. The material is placed in moulds heated to 100 DEG  C. and subjected to a pressure of about 5 to 25 tons per sq. in. so as to reduce it to about 0.4 of its initial volume, and is then treated so as to harden the resinous binding material.  The moulding pressure may be released prior to the hardening treatment in order to allow slight expansion of the material and separation of the magnetic particles.  After removing the mould, the continuity of the outer skin of the core is broken by mechanical or chemical means such as sand-blasting or pickling with acids.  Specification 366,475, [Group XL], is referred to.
Patent GB-1352277-A (GB)
Title: Granular or powdered reaction component and a method of adding the same to a molten metal
IPC: C21C5/36
Filed: 1972-02-21
Abstract: 1352277 Steelmaking KONINKLIJKE NEDERLANDSCHE HOOGOVENS EN STAALFABRIEKEN NV 21 Feb 1972 [25 Feb 1971] 7911/72 Heading C7D A granular or powdered reaction component added during steelmaking is mixed with a solid, fine powdered material such as colloidal SiO 2  which reduces the cohesion of the grains of the reaction component. The amount of SiO 2  added is approximately 0À1wt. per cent of the mixture and the resulting improved contact surface area between the reaction component and molten steel permits the use of a reaction component which remains solid at the melting temperature of the metal. In the desulphurisation of pig iron the desulphuresmy agent may be a mixture of 70 parts of technical lime nitrogen and 30 parts of calcium carbonate containing carbon in the form of diamide lime.
Patent GB-1019166-A (GB)
Title: Purification of polyalkylene ethers
IPC: C08G65/322
Filed: 1963-02-27
Abstract: Crude polyalkylene ether glycols prepared from an initiator and an alkylene oxide containing at least 3 carbon atoms and optionally ethylene oxide are refined by treating a mixture containing the crude product and a hydrogenation catalyst with hydrogen at a pressure between atmospheric pressure and 100 p.s.i.g. and a temperature of from 15 DEG  to 200 DEG  C. until no more hydrogen is absorbed.  The catalyst may be nickel or a platinum group metal e.g. palladium. Suitable alkylene oxides are propylene oxide; 1,2-butylene oxide: 2,3-butylene oxide.  Typical initiators include propylene glycol; dipropylene glycol; water; ethylene glycol; diethylene glycol; glycerol; 1,1,1-trimethylolpropane; 1,2,6-hexanetriol; mono-, di- and tri-ethanolamine, pentaerythritol; sorbitol; methyl glucoside; mannitol; sucrose; methanol, ethanol and butanol.  The process may be carried out in a solvent e.g. an alcohol, ether, glycol mono- or di-ether.ALSO:Crude polyalkylene ether glycols prepared from an initiator and an alkylene oxide containing at least 3 carbon atoms and optionally ethylene oxide are refined by treating a mixture containing the crude product and a hydrogenation catalyst with hydrogen at a pressure between atmospheric pressure and 100 p.s.i.g., and a temperature of from 15 DEG  to 200 DEG  C. until no more hydrogen is absorbed.  The catalyst may be nickel or a platinum group metal, e.g. palladium.  Suitable alkylene oxides are propylene oxide; 1,2-butylene oxide; 2,3-butylene oxide.  Typical initiators include propylene glycol; dipropylene glycol; water; ethylene glycol; diethylene glycol; glycerol; 1,1,1-trimethylolpropane; 1,2,6-hexanetriol; mono-, di- and tri-ethanolamine, pentaerythritol; sorbitol; methyl glucoside; mannitol; sucrose; methanol, ethanol and butanol.  The process may be carried out in a solvent, e.g. an alcohol, ether, glycol mono- or di-ether.
Patent GB-1281140-A (GB)
Title: Improvements in or relating to replication security voters
Inventor: MORTON WILLIAM DESMOND
IPC: G06F11/18
Filed: 1971-03-26
Abstract: 1281140 Digital transmission system POST OFFICE 26 March 1971 7917/71 Heading H4P [Also in Division G4] Error prevention system of the kind accepting the majority output of duplicated subsystems as the correct data has the outputs of the subsystems coded to form an address which is supplied to a read only store. Binary outputs from, e.g. 3 subsystems can be ordered to form a 3 bit address addressing 8 locations in a read only store. Each location as described (Fig. 2) holds 6 bits, indicating the majority bit from the subsystems the inverted majority bit, whether a fault occurs i.e. if one subsystem differs from the other and an indication of which if any, subsystem is the minority.
Patent GB-1419826-A (GB)
Title: Excavating machines rock breaking machines and the like on a reproduction drum and removing it therefrom
IPC: B28D1/26
Filed: 1973-02-17
Abstract: 1419826 Mounting percussive tools DOBSON PARK INDUSTRIES Ltd 17 Jan 1974 [17 Feb 1973] 7921/73 Heading B4C [Also in Division E1] A rock breaking tool is mounted on the jib of a mobile excavating machine by means of a cradle 11 having a plate 17 mounted on tubes 18 longitudinally slidable in bearings 19 and its movements are damped by cushioning or damping material 24 on rods 20 which can be compressed between a fixed end 25, a bushing 22, 23 on the plate 17 and an end member 26 on the rod 20. The cradle is pivotally mounted on the jib and may be hydraulically moved. The damping means may be compressed, woven or interlinked steel wires or springs.
Patent GB-1130504-A (GB)
Title: Loom provided with a blowing nozzle for the weft
IPC: D03D47/34
Filed: 1966-02-23
Abstract: 1,130,504. Jet looms. MACHINEFABRIEK L. te STRAKE N.V. 23 Feb., 1966 [23 Feb., 1965], No. 8002/66. Heading D1E; In a jet loom a weft 8 which is to be blown through the nozzle 4 is first pushed into the nozzle by a forked needle 6 which is adjustably mounted on a slide 11. To assist engagement by the needle the weft 8 is presented at right angles to the axes of the nozzle and needle. In a modification, fig 3, a similar needle 6a is used in an inserter comprising a receiver 15 and an auxiliary receiver 26.
Patent GB-271022-A (GB)
Title: Improvements in flushing apparatus
IPC: E03D3/10
Filed: 1927-03-25
Abstract: 271,022. Krauss, G. March 25, 1927. Valve-discharge waterwaste preventers. - The discharge valve consists of a cylinder h arranged to slide on a fixed piston f carried by a hollow rod i, communication between the upper end of the cylinder and the water supply c being governed by a valve l. A narrow duct m permits slow re-closing.
Patent GB-435124-A (GB)
Title: Improvements in valves of the lift-plug type
IPC: F16K1/38
Filed: 1934-03-16
Abstract: 435,124. Outlet plugs for tanks &c. JACKSON, F., c/o Shipley Brass Works, Windhill, Shipley, Yorkshire. March 16, 1934, No. 8288. [Class 69 (i)] [See also Group XVII] An outlet plug for dye-vats, cisterns, &c. has a seating portion a, below which is a hemispherical portion d. A triangular member g enables the plug to be manipulated by a hooked rod or other instrument, and the plug may be of hollow formation.
Patent GB-1181826-A (GB)
Title: Internally Isolated Ethylenically Unsaturated Peroxides
IPC: C08F4/32
Filed: 1967-02-21
Abstract: 1,181,826. Peroxides. ARGUS CHEMICAL CORP. 21 Feb., 1967 [3 March, 1966], No. 8291/67. Heading C2C. The invention comprises compounds of the formula where p is 1 or 2, m and n are 0 or 1, the sum of m and n is at least 1, R is a phenyl radical, a saturated acyclic radical or an internally isolated ethenically unsaturated acyclic or cyclic radical, R<SP>1</SP> is a saturated mono- or bivalent acyclic radical, an internally isolated ethylenically unsaturated cyclic or acyclic monovalent radical, an internally isolated ethylenically unsaturated cyclic bivalent radical or an acetylenically unsaturated acyclic bivalent radical with the provisos that (1) R and R<SP>1</SP> are each hydrocarbon radicals of less than 20 carbon atoms, (2) when n is 0, R is an internally isolated ethylenically unsaturated cyclic radical, (3) when m is 0, R is a saturated acyclic radical and R<SP>1</SP> is an internally isolated ethylenically unsaturated monovalent cyclic radical, (4) when n is 0 and p is 1, R<SP>1</SP> is a saturated acyclic radical, (5) when p is 2 and n is 0, R<SP>1</SP> is bivalent cyclic and either saturated or acetylenically unsaturated and (6) at least one of R or R<SP>1</SP> is always a cycloalkene radical. The peresters may be prepared by reacting a hydroperoxide of a hydroxy alkane with a halide of an ethylenically unsaturated carboxylic acid. The diacyl peroxides may be prepared by reacting a peracid with an acid halide.
Patent GB-116533-A (GB)
Title: Improvements in or relating to the Ink Distributing Devices of Printing Presses.
Inventor: TERREY ARTHUR
IPC: B41F31/15
Filed: 1917-06-11
Abstract: 116,533. Terrey, A. June 11, 1917. Inking-apparatus.-In an inking- apparatus for a printing-machine, of the kind in which a series of distributing-rollers are reciprocated axially on a distributing-drum by a cam common to them all, the rollers are mounted on a pivoted frame so that they can be moved clear of the drum when desired. The reciprocating movement of the distributing-rollers a on the distributing-drum f is effected by the engagement of collars c on the spindles b of the rollers, with a grooved cam c mounted freely on the axle of the drum f and driven from a suitable part of the press such as the shaft of the forme cylinder g bv bevel and worm gear h, i, j, k. The rollers u and one of the forme-inking rollers x are mounted on a pivoted frame q comprising end brackets r and a dustexcluding cover-plate s, so that they may be turned clear of the drum f, as shown in dotted lines, Fig. 1. The other forme-inking roller y is carried by a pivoted bracket m<2> which is connected to the frame q by toothed segments a<1>, b<1> whereby the bracket m<2> and frame q are operated simultaneously. The bearings of the distributing-rollers a may be separately adjusted by screws u, the screws at each end of each roller being operated simultaneously by bevel-gears s and a shaft w provided with a hand-wheel. The drum is preferably constructed to form the ink reservoir as described in Specification 116,325.
Patent GB-168929-A (GB)
Title: Improvements in and relating to oxy-acetylene blow pipes
IPC: F23D14/44
Filed: 1920-03-22
Abstract: 168,929. Wass, J., and MacGregor, R. S. March 22, 1920. Blowpipe burners.-For subaqueous working, an oxy-acetylene blowpipe burner is surrounded by a casing 1 having internal spiral vanes arranged so that compressed air supplied to the rear of the casing is caused to issue around the nozzle 6 with a cyclonic or spiral effect and with the greatest pressure at a point below the nozzle so as to form a. water-freed space around the flame. For mounting the casing, a back-plate 4 is attached to the burner by means of a union-nut 5. Rotatably carried by the back-plate 4 is an internallyscrewed ring 3 by means of which the casing 1 may be adjusted longitudinally with respect to the burner without being rotated relatively to the back-plate. Compressed air is supplied to the casing by a, pipe 23 and is given a, whirling motion by the spiral-vanes 9, 11 formed on the internalsurface of the casing. A cup-shaped cap 2 screws on to the end of the casing and the cap may have a series of receses on its outer face or may have projections thereon for preventing the said face from being placed flat against the work.