baber/WOPTO huggingface dataset:
Patent GB-674748-A (GB)
Title: Improvements in and relating to dust removal in machine tools
IPC: B24B55/06
Filed: 1949-07-11
Abstract: 674,748. Confining dust on generation. MURAD, W. H. Oct. 10, 1950 [July 11, 1949], No. 18257/49. Class 8 (ii) A machine tool which produces dust during its operation comprises a tool carrying shaft 13 driven by a motor 11 and having an air extraction fan 14 mounted thereon which draws air carrying the work dust into a casing 10 within which means are provided for extracting the dust from the air before the latter passes to the fan. A twin disc pedestal grinding machine has the dust removed from each of the work surfaces by the fan which draws the air through a cowling 20 and a bag filter 30. The dust is deposited in a remevable tray 31 and the clean air passing through the filter is circulated through the motor casing 12, for cooling purposes, and is exhausted through an aperture 17 The cowling is pivoted at 21 and may be swung away from the grindstone to facilitate the removal of the latter.
Patent GB-834541-A (GB)
Title: Improvements in or relating to breast-supporting cups for brassieres, and other garments
Inventor: POSNANSKY BESSIE
IPC: A41C3/00
Filed: 1955-06-27
Abstract: 834,541. Brassieres &c. LEADALE CLOTHING CO. Ltd. June 21, 1956 [June 27, 1955], No. 18461/55. Class 141 A breast cup 1 for a brassiere &c. includes a lower portion having very narrow parallel pleats 2 stitched to a backing cloth by rows of stitching 3 transverse to the pleats.
Patent GB-624836-A (GB)
Title: Improvements in and relating to pulse amplifiers
IPC: H03F1/50
Filed: 1947-07-11
Abstract: 624,836. Pulse amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd. July 11, 1947, No. 18524. Convention date, Aug. 3, 1944. Drawings to Specification. [Class 40 (vi)] In a multi-stage pulse amplifier successivestages are unblocked by positive-going pulses, the necessary polarity reversal of the anode pulses being obtained by connecting an artificial line with its remote end short-circuited across the anode load resistor, so that a negative-going pulse appearing across the resistor eventually produces a positive-going pulse across it which unblocks the following stage. In another arrangement one end of a balanced artificial line is connected across the anode load and the other end is connected to the next stage and transposed so as to give a positive-going output pulse. In both arrangements the anode load resistor is given a value equal to the characteristic impedance of the line.
Patent GB-586068-A (GB)
Title: Improvements relating to electrical apparatus for comparing time intervals
IPC: G04F7/00
Filed: 1944-09-28
Abstract: 586,068. Measuring time intervals. COSSOR, Ltd., A. C., and LEVIN, A. Sept. 28, 1944, No. 18606. [Class 37] [Also in Group XXI] A device for the comparison of two periods of time comprises a potential divider 10 connected to a power source 11, sliders 12, 13 therefor arranged to be driven at equal constant speeds away from the end 14 of the divider 10 each throughout a corresponding one of the periods to be compared, a subsidiary potential divider 15 connected between the point 14 and slider 13, and means 17 responsive to reversal of polarity of potential connected between the slider 12 and a tapping 16 on the divider 15, corresponding to the desired ratio of the two periods. For measuring out a time period to bear a given ratio to a reference period, slider 12 or 13 is driven in accordance with the reference period dependent on whether the reference period is less or greater than the period to be measured out. The reference period must obviously end before the measured out period and the starting of slider 12, will be suitably retarded when moved in accordance with the smaller measured out period. As the tapping point 16 on potentiometer 15 corresponds to the ratio of the two periods, termination of the measured out period is indicated by 17 as the potential thereacross reverses. The arrangement is suitable for aircraft bomb-sighting apparatus. The sliders 12, 13 may be advanced by ratcheting motors controlled by tuning forks. The source 11 may be D.C. or A.C. In the latter case the indicator 17 may comprise a phase reversal detector such as a double control valve, e.g., a pentode receiving on its respective control electrodes the voltages between points 12, 16 and a reference voltage from source 11 converted into rectangular waveform. A period may be added to or subtracted from the period to be measured out by starting one of the sliders from a position other than zero.
Patent GB-516246-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/46
Filed: 1938-06-24
Abstract: 516,246. Cathode-ray tubes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. June 24, 1938, No. 18723. Convention date, June 24, 1937. [Class 39 (i)] The rays from a cathode 1 are directed at an aperture 11 in an electrode 5 which is to be reproduced on the screen, and an electrode 6 following the electrode 5 is given a potential equal to or slightly less than the electrode 5 for the purpose of preventing secondary electrons produced at the aperture 11 from reaching the screen. The electrode 6 is preferably conical with the smaller end adjacent to the aperture 11 and of such a diameter as to accommodate variations of the cross-section of the beam due to modulation. Alternatively the electrode 6- may be composed of a number of apertured diaphragms of increasing diameter, or in the form of a cylinder or an apertured diaphragm. The beam leaving the cathode 1 is first directed under the influence of the field caused by the electrodes 1, 2, 3, on to an aperture 10 and is then focused on to the aperture 11 by the field existing between the electrodes 3, 4 and 5. The electrode 4 may be used to modulate the beam. The main electron lens is formed by the field between the electrodes 7 and 8.
Patent GB-998689-A (GB)
Title: Production of vinyl chloride
IPC: C07C17/154
Filed: 1963-05-13
Abstract: Vinyl chloride is made by contacting at a temperature from 470-600 DEG  C. ethane, oxygen containing gas and a chlorinating agent which is chlorine and/or hydrogen chloride in a bed of oxychlorination metal halide catalyst particles to produce a gaseous product containing vinyl chloride, ethylene and chlorinated derivatives of ethane, separating the vinyl chloride from the gaseous product and introducing the ethylene and chlorinated derivatives of ethane into the bed of catalyst particles.  The ethylene and chlorinated derivatives of ethane are preferably introduced into the bed of catalyst particles while regulating the quantity of ethane and chlorinating agent fed to the bed to compensate for the chlorinated derivatives of ethane and ethylene.  The gaseous product containing unsaturated hydrocarbons saturated hydrocarbons and hydrocarbon chlorides, is passed to a condensation step operated at a temperature sufficient to condense substantially all hydrocarbon chlorides in the gaseous product, the uncondensed hydrocarbons are fed to the bed of catalyst particles, and the vinyl chloride is separated from the other hydrocarbon chlorides and the said other hydrocarbon chlorides which boil below the boiling point of 1,1,2-trichloroethane are introduced into the bed of catalyst particles.  The uncondensed hydrocarbons from the condensation step may contain acid values and carbon dioxide which are removed by scrubbing before being fed to the bed of catalyst particles. The particularly preferred type of catalyst consists of copper chloride and potassium chloride on particles of a porous carrier, and the particularly preferred form of catalyst bed is a fluidized bed.  The invention is described with reference to a flow sheet (not shown) which represents a fully integrated system including several recycle streams.  Reference is made in the description to Specification 934,329.
Patent GB-187017-A (GB)
Title: An improved curler for permanent hair waving
IPC: A45D2/32
Filed: 1921-07-12
Abstract: 187,017. Nieser, W. W. July 12,1921. Hair-waving.-An appliance of the type comprising a friction clutch between the head and body, is made in three parts. The upper part A is formed with a flattened head in which is cut an inclined slot 1 countersunk at the end, a conical portion 3, and a rod-like extension 4. The middle part B is bored to receive the rod 4, and its upper end 8 made to fit the cone 3 and of the same external diameter as the head A. A spring 9 threaded on the rod 4 and compressed by a nut 5 screwed on to the end of the rod 4 draws the conical surfaces together to form a clutch. The tubular body part C, which may be either cylindrical or conical, is fitted over a reduced portion 10 of the part B and secured by soldering or otherwise. The end 6 of the rod 4 is squared to fit a key.
Patent GB-154657-A (GB)
Title: Improvements in or relating to alighting or landing gear for aircraft
IPC: B64C35/00
Filed: 1919-07-29
Abstract: 154,657. Vickers, Ltd., Pierson, R. K., and Duncan, T. S. July 29, 1919. Land wheels.-In aircraft landing-gear adapted to be raised into an inoperative position, angularly movable frames carrying the landing wheels are adapted to engage guides or tracks at the sides of the hull or fueslage to prevent lateral movement of the frames and wheels. In the form shown in Fig. 2, land wheels C at each side of the hull or fuselage A of a flying-boat are carried by frames B pivotally mounted on the ends of a transverse shaft D to which are fixed arms D' connected to rods D<2> having at their lower ends projections D<3> slidng on locking-bolts D<4> which engage notches in the lower ends of quadrants E fixed to the bull. The bolts D<4> are pressed into engagement with the notches by springs bearing between the projections D<3> and collars on the bnlts. When the shaft D is rotated to raise the wheels, the arms D<1> first release the bolts D<4> and then bear on the frames B so as to raise them along the quadrant, the bolts D<4> slipping past catches D<7> when the frames reach the inoperative position. Similarly, when lowering the frames, the bolts D<4> are first disengaged from the catches D<7>. The frames B may be counterbalanced by springs or rubber cords connected thereto or to levers or quadrants on the shaft D. The wheels may be housed or covered in when in the raised position. In a modification, in which the sides of the hull and the frames B are inclined to the vertical, the shaft D is fitted at its ends with universally-jointed portions which are arranged at right-angles to the sides of the hull, and carry worms engaging worm-wheels on shafts arranged parallel to the frames B and carrying pinions the teeth of which engage holes in the quadrant, the worm gear serving to lock the apparatus. Shock of landing, deadening.-The wheel axles C<1> are mounted in carriers C<2> slidable on the tubes B and provided with upward extensions C<3> carrying cross-members F<2> also sliding on the tubes B. The extensions C<3> slide through cross-members F<1> fixed to the tubes B, and elastic strands Fare wound round the members F<1>, F<2>. These shockabsorbers F may be enclosed in streamline casings.
Patent GB-1111170-A (GB)
Title: Improvements in or relating to circuit arrangements for processing a pal colour television signal
Inventor: HOBBS DONALD SYDNEY
IPC: H01J29/86
Filed: 1966-04-29
Abstract: 1,111,170. Transistor circuits; colour television. MULLARD Ltd. 13 April, 1967 [29 April, 1966], No. 18865/66. Headings H3T and H4F. A circuit for separating the I and Q chrominance signals of a PAL colour television signal comprises a transistor T having a collector load Re coupled by a delay line DL to output terminals tO and tO<SP>1</SP>, there being 180 degrees phase difference between the two outputs, and an adjustable emitter load Re coupled by isolating resistances to the two output terminals. The input applied to the base is alternately I + Q and I - Q and the unwanted component cancels out; Re is adjustable to give exact cancelling in spite of variations of attenuation for different delay lines. The delay line may be a glass line provided with piezo-electric input and output transducers TD1 and TD2, Fig 2 (not shown), tuned by parallel inductances (L1 and L2). The connection to the emitter load may be made to the junction of two resistors connected across Re (Fig. 4).
Patent GB-1032968-A (GB)
Title: Electrical control device
IPC: H05B37/02
Filed: 1964-05-06
Abstract: 1,032,968. Switching systems. DELMATIC Ltd. May 6, 1964, No. 18904/64. Heading H2H. A circuit providing remote control of loads such as lamps 10-12 is controlled by contacts RY1-RY2, RD1-RD2 of relays RY/3, RD/2, RY/3 being bi-stable. Momentary energization of a coil RYa illuminates lamps 10, 12 and subsequent energization of relay RD/2 extinguishes lamps 10 and illuminates lamps 12. With coil RYb momentarily energized and relay RD/2 de-energized, the lamps 10 may be illuminated by a third relay RP1. Other arrangements are described in the Specification. In an alternative arrangement a contactmaking photo-cell can be employed to control the relay RD2.
Patent GB-442480-A (GB)
Title: Improvements relating to locks for automobile doors
IPC: E05C9/02
Filed: 1935-07-02
Abstract: 442,480. Door fastenings. FIAT SOC. ANON., 250, Via Nizza, Turin, Italy. July 2, 1935, No. 18906. Convention date, Oct. 10, 1934. [Class 44] Fastenings for. auto mobile doors are oper ated by a handle sunk substantially flush in a vertical recess anc turnable about a hori zontal axis parallel t( the door plane. As shown, a pair of bolts 3<a> are connected by links 3 with a pivotec disc 4 rotatable from inside by an ordinary handle 5 and from out side by a lever handle 7 with an off-set lower end 7<a> let into a verti cal recess 11, the lower end 12 of the recess being enlarged to facil itate engagement of the end 7<a> by the fin gers. The handle 7 has an off-set arm 9 en gaging an eccentric pir 6 carried by disc 4, so that when handle 7 is raised the disc is rotated and the bolts retracted. The handle is pivoted on a pin 8 carried by a ferrule 13, and a rubber stop 14 for the handle is provided. The bolts are shot by a spring, not shown. When the fastening is a latch bolt, the disc 4 may be replaced by a lever, one arm of which carries the pin 6 engaged by handle 7, and the other arm acts on the latch.
Patent GB-304563-A (GB)
Title: Improvements in and relating to the propulsion of collapsible tubular boats or rafts
IPC: B63H20/04
Filed: 1928-06-29
Abstract: 304,563. Winkler, G., and Meyer, H. June 29, 1928. Rafts; detachable propelling installations.-A collapsable tubular raft 1 is fitted with an outboard motor 8 placed in the stern of the raft which is divided from the main portion by a transverse vertical partition 4 attached to the bottom member 2 and carrying the motor. The partition 4 carries a top flat transverse member 9 which rests on the top of the tubular portion of the raft, or, in a modification, is situated somewhat lower. The motor is supported by a removable member 7, which fits into top and bottom sockets 6, 5 carried by the partition.
Patent GB-238218-A (GB)
Title: Improvements in and relating to vacuum tubes and methods of making the same
IPC: H01J7/18
Filed: 1925-07-27
Abstract: 238,218. British Thomson-Houston Co., Ltd., (Assignees of White, A. J., and McIlvaine, H. A.). Aug. 7, 1924, [Convention date]. Vacuum tubes.-In vacuum tubes with plate, control grid and filament, phosphorus or other substance with negative contact potential relatively to the material of the electrodes is deposited on the electrodes, for example, by volatilization after evacuation of the tube, in quantities in considerable excess of that necessary to perfect the vacuum. Amplification by the tube is improved apparently due to a resulting negative bias on the grid, the input impedance and the mutual conductance of the tube being raised. Carbon or other nonmetal may be used instead of or in addition to phosphorus, a volatile hydrocarbon being introduced into the device in the case of carbon. A material with more positive contact potential such as magnesium may also be vaporized. Phosphorus mixed with alcohol may be painted as a band 16, Fig. 2, on the plate, pieces 17, 18 of magnesium being welded to the plate. The plate may be of nickel, the grid of molybdenum, and the filament of tungsten or thoriated tungsten. After assembly, evacuation, and baking at a temperature insufficient to vaporize the phosphorus, the tube is flashed to heat the plate and vaporize the chemicals by a high voltage between the plate and filament with the plate positive, the circuit being interrupted a number of times. A higher voltage is then applied intermittently for one minute to the anode which remains cold. Between applications of voltages to the plate and filament with the grid unconnected in order to age the tube, the filament is then activated by heating. In order to increase the deposit on the grid, the bulb, before being aged, is heated to vaporize the chemicals from the bulb and leave the parts heated clear, the heat being applied by an oven or gas flame. Alternatively, the tube may be constructed so that the chemicals are directed towards the electrodes on initial vaporization. A shield 20, Fig. 3, projecting from the anode may support the magnesium 21 on its under surface and phosphorus may be painted on the side of the anode at 22.
Patent GB-237908-A (GB)
Title: A method for protecting against the heat a film disposed in the gate or window of kinematographic apparatus or the like
IPC: G03B21/16
Filed: 1925-07-27
Abstract: 237,908. Oeser, E., (Assignee of Aeroner Patent Verwertungs Ges.). July 31, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Kinematograph apparatus.-Relates to means for cooling the film in a projector, of the kind in which the projection beam is passed through a water receptacle, and a stream of air is projected on to the film. The water vessel c having windows d is disposed within a casing h for a fan i. The stream of air produced by the fan passes around the vessel c, thereby cooling the water, and emerges through a nozzle m which directs it on to the film b. Alternatively the stream of air from the fan may be divided into two parts, one of which passes round the vessel c while the other is projected directly on to the film.
Patent GB-236401-A (GB)
Title: Improvements in grates for furnaces and the like
IPC: F23H9/02
Filed: 1924-08-12
Abstract: 236,401. Risby, H. J. Aug. 12, 1924. Grates of the type comprising cylindrical grids adapted for rotation from the exterior of the furnace are arranged so that a pair of such grids forms the complete grate, the grids rotating in opposite, directions so as to maintain the fuel in intimate contact with the walls of the furnace. Each grid comprises an inclined shaft c mounted at the base of the chamber a and carrying collars b between which are disposed the firebars d. The angle of inclination of the grids may be the angle of repose of the fuel. At the front of the furnace the shafts c carry ratchet wheels i engaged by pawl levers h pivoted to the shafts c and moved by a bar g which is continually reciprocated by a crank disc f. The pawl levers h are so disposed that the upper portions of the grids move from the centre of each chamber a to the side walls, thus maintaining the fuel bed in contact with the walls of the chamber and preventing heaping up of fuel at the centre. The fire-bars d may be cooled by a water spray.
Patent GB-192015-A (GB)
Abstract: 192,015. Boyle, W. B. June 8, 1922. Stands for tools, mudguard protectors, &c., to facilitate repairs.-An adjustable stand carries a tool-tray 10 and a support for a cloth &c. 14 which may be draped over the front mudguard and valance of a motor-vehicle to protect it when repairs to the engine are being carried out. An adjustable telescopic column 3, 4 is provided with feet 2 which project under the wheel and with arms adapted to carry the tray 10. An arm 15 underneath the tray supports the cloth 14.
Patent GB-1470846-A (GB)
Title: Method and apparatus for controlling a rotary crane
IPC: B66C23/84
Filed: 1974-05-02
Abstract: 1470846 Controlling load swinging in rotary cranes TOKYO KEIKI CO Ltd 2 May 1974 [9 May 1973] 19213/74 Heading B8B [Also in Division G3] In a method of controlling a rotary crane having a boom 4 and a rope 2 extending between the free end 3 of the boom 4 and an object 1 to be transported to a prescribed position the rotation of the boom 4 is controlled according to an on-off velocity control pattern wherein the boom 4 is alternately rotated at a constant angular velocity and stopped during nine successive intervals of time calculated from specified functions determined from the condition that the centre of gravity C traces a circular path at the mid-time interval, the velocity control pattern being such that it is symmetrical about the mid-time of the total control period and that when the boom 4 is stopped at the prescribed position after cessation of the rotary motion the object 1 has vertically no movement in any direction. Fig. 4 is a block diagram illustrating a control circuit to carry out the above method. 10 is an operation unit with a memory function able to set each of various factors, such as the length of the rope 2, the boom turn angular velocity, the demanded turn angle # d , selectively as the occasion demands, and to calculate a control time for each control section according to the specified functions. 11 is a gate circuit receiving signals from a logic circuit 17 and supplies the time signals to a timer 12 receiving clock pulses from a generator 13 and supplying its output signals to a shift register 16. 14 is a start signal generator, 18 is a control circuit generating rectangular waves fed to the drive 19. A minimum value for the demand turn angle # d  is imposed by the requirement that the mid-time interval (i.e. the fifth) is greater than zero.
Patent GB-147189-A (GB)
Title: Means for separating the constituent elements of gaseous mixtures
IPC: B01D53/24
Filed: 1920-07-07
Abstract: 147,189. Mazza, E. N. Sept. 7, 1915, [Convention date]. Density separators.-In a centrifugal separator for gases, the mixture of gases &c. is forced through conduits d provided with curved walls a, b and impinges at the outer ends e of the conduits d against the edges of a plate f interposed between the conduits d, thereby causing the separation of the gases in the mixture. The dividing or separating edges of the plate, f may take various forms, and the conduits d may also be connected to the casing of a fan. Specifications 7421/06, 11546/08, and 13737/11 are referred to.
Patent GB-357963-A (GB)
Title: Improvements in or relating to automatic fire arms
IPC: F41A15/12
Filed: 1930-06-25
Abstract: 357,963. Automatic guns. FARRER, J. 0., 27, Chancery Lane, London. June 25, 1930, No. 19379. [Class 92 (ii).] Relates to guns of the long-recoil type in which the barrel A, barrel-extension D and breech-block B recoil together for a distance greater than the length of the cartridge case but less than the length of a live cartridge, the breech-block being unlocked by a rocking-bolt 30 and retained by a catch 2 whilst the barrel and barrel-extension are returned by the spring F. According to the invention, a rocking ejector 10 on the barrel-extension has one projection 13 for ejecting the spent case and a second projection 14 for ejecting a live cartridge during unloading when it is necessary to give an increased rearward movement to the breech-block. A toe 15 on the ejector rides on a fixed surface 5 to move the projection 13 temporarily to an inoperative position when ejecting the live cartridge. The locking-bolt is operated for unlocking and locking respectively by fixed inclines 7, 7<1> and a fresh cartridge C<1> is inserted from the side as shown in plan in Fig. 3A, by a rocking arm 20 operated in one direction by an incline on the barrel-extension and in the reverse or loading direction by a projection 1 on the breech-block.