baber/WOPTO huggingface dataset:
Patent GB-291865-A (GB)
Title: Improvements in electro-therapeutic apparatus
IPC: A61N1/26
Filed: 1927-03-08
Abstract: 291,865. Roberts, J. H. T. March 8, 1927. Electric appliances.-An electro-therapeutic hair brush comprises a discharge tube or similar resistance and condenser applicator device whereby high-frequency high-tension electric current is conveyed to the back of the brush and means whereby this current is spread over substantially the entire bristle area thereof. As shown, a branched exhausted glass tube electrode 2 is mounted within the brush back or case 1, and the shank 4 of the electrode terminates in a metal cap 5 adapted to be inserted in a handle 6, Fig. 4. The bristles may be in the form of short tubular glass prongs on the branches of the electrode, which is then preferably provided with a resilient mounting as in rubber, and the prongs may also be tipped or enveloped in insulating-material such as rubber or ebonite. As shown in Fig. 4 the bristles 10 are carried by a convex rubber sheet 9 of which the front and/or back is coated or faced with metal paint, bronze powder, or foil, or like conducting-material 11, 12 so that they are all connected together electrically; or the back of the brush may be of metal or a metal sheet be inserted in the brush for the bristle roots to make contact with, as when the brush is pressed against the head. The bristles may be of metal either left bare or tipped or enveloped with rubber. Instead of the high-frequency generating-apparatus 7 being separate from the brush it may be permanently incorporated therein or combined therewith. According to the Provisional Specification, the brush may be formed of glass combs arranged side by side and preferably combined together in a single shank or handle.
Patent GB-159818-A (GB)
Title: Improvements in and relating to spring wheels
IPC: B60B9/10
Filed: 1921-02-28
Abstract: 159,818. Mathieu, F. March 3, 1920, [Convention date]. Spring wheels with continuous outer rigid ring and rubber-ring and like hubs and cushions.-A wheel comprises a tread-carrying disc C adapted to slide between discs A connected to a hubsleeve B. The space between the hub B and the flanged inner periphery of the disc A is packed with solid and hollow rubber blocks D, E. A resilient drive is provided by hollow rubber cylinders I fitted between facing brackets G, H on the discs A, C respectively.
Patent GB-893845-A (GB)
Title: Electrographic recording apparatus
IPC: G03G15/32
Filed: 1959-02-25
Abstract: 893,845. Selective printing. BURROUGHS CORPORATION. Feb. 25, 1959 [May 9, 1958], No. 6574/59. Class 100(4) [Also in Groups XL(a) and XL(b)] An electrographic recording apparatus comprises a line length of printing heads 10, Fig. 3, each having print electrodes 52 and a plurality of initiating electrodes 54 driven by pulse generators 76, 66 and 66e respectively, the print pulse generator 76 applying a print pulse to a print electrode 52 associated with a fixed group of initiating electrodes so that print charges are applied to a record web at element positions where both a print pulse and an initiating pulse is present. The input signals may be sensed from a tape or received in a decoder 70 as pulses, e.g. a 6-bit binary code or a 5-unit teleprinter code. The output of decoder 70 is connected to an encoder 68 which operates the initiating pulse generators 66a-66e according to the shape of the character to be printed. The initiating electrodes in the whole line length of print heads 10 are energized at the same time but since it is necessary for both initiating and print electrodes at any point to be energized simultaneously to cause a discharge, only one head effects printing. This is determined by a stepping switch 78 which connects the print pulse generator 76 to each print head in turn. After the charges are established in a polythene dielectric layer on the web 26, ink powder is deposited on the charges at 56, surplus ink powder shaken off at 57 and the ink attracted to the charged areas is forced into intimate contact with the plastic layer by calendering roll 62. Specifications 784,450, 893,844 and 893,846 are referred to.
Patent GB-107372-A (GB)
Title: Improvements in Thread Cutting Devices for Sewing Machines.
IPC: D05B65/00
Filed: 1917-05-09
Abstract: 107,372. Singer Manufacturing Co., (Assignees of Voe, A. H. de). June 20, 1916, [Convention date]. Sewing - machines ; thread-cutters. - The presser-foot 3 is provided in its rear end w i t h a V-shaped notch 5, and has attached to its upper surface a cutter 8 the edge 9 of which extends above and parallel with the outer side of the notch and into a recess 6 of slightly greater width than the thickness of the cutter provided in the shank of the presser-foot. The thread t to be cut is guided towards the knife edge by a bevelled surface 2<x> on the presser-foot shank and is drawn into the recess 6 where it is jammed and finally severed. The invention is described also as applied to a presser-foot having a pivoted foot-plate.
Patent GB-491772-A (GB)
Title: Improvements in or relating to the measurement of electric power, particularly high-frequency electric power
IPC: G01R21/00
Filed: 1938-03-02
Abstract: 491,772. Power meters. SIEMENS & HALSKE AKT.-GES. March 2, 1938, No. 6619. Convention date, March 3,1937. [Class 37] A bridge arrangement for measuring power, particularly at high frequencies, has one diagonal supplied with a current proportional to the voltage, the other diagonal containing the secondary winding of a current transformer for the current to be measured, and two adjacent bridge branches each containing a rectifier having a square-law characteristic in the working range so as to supply a direct current corresponding to the square of the current flowing through the associated bridge branch, the other two bridge branches preferably containing resistances of relatively high ohmic value. A current transformer 3 has its primary winding in series with an A.C. source 1 and a load 2, the secondary winding being in one diagonal of a bridge, the other diagonal of which is supplied by the voltage U. As shown in Fig. 1, two arms of the bridge are formed by high resistances 5, 5<1>, the other two branches comprising resistances 8, 81 connected in the grid circuits of valves 9, 9<1>. Condensers 11, 11<1> prevent alternating currents from passing through a common anode battery 12 through resistances 13, 13<1> to the anodes of the valves 9, 9<1>, the anodes being connected by a moving coil instrument 14. The grid biassing potential of the valves is so determined by a common battery 10 that they work on the quadratic portions of their characteristics. The instrument 14 is traversed by a direct current which is proportional to the difference of the anode currents of the valves 9, 9<1>, corresponding to the squares of the sum and difference of the current and voltage of the circuit. In a modification, Fig. 2, a double diode 15 has its anodes 19, 19<1> connected to the junctions between the resistances 8, 8<1> and condensers 16, 16<1>, the cathode 18 being connected to the junction between the coils 17, 17<1> of a double-coil instrument and also to the diagonal point of the bridge supplied with the voltage U. The double diode may be replaced by dry rectifiers in parallel with the resistances 8, 8<1>, in which case the indicator may be a single moving coil instrument connected, in series with choking coils, between the junctions of the resistances 8, 8<1> and condensers 16, 161.
Patent GB-723801-A (GB)
Title: Improvements in control systems for electrical transformers
IPC: H02H9/00
Filed: 1952-03-14
Abstract: 723,801. Switching systems for transformers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 14, 1952 [March 17, 1951], No. 6667/52. Class 38 (4). A control system for a transformer which is energized during brief switching periods by an alternating current is characterized in that the transformer core is premagnetized by a direct current between successive switching periods and the instant at which the alternating current is switched on to the primary winding of the transformer is so related to the polarity of the direct current premagnetization of the core that the alternating current initially tends to magnetize the core in a sense opposite to that of the remanent magnetization of the core. Between the switching periods the primary winding of a transformer 2 is supplied with direct current from a source 8 through normally closed contacts 9, 10 associated with a relay 3. A relay 7 is energized when the transformer is to be brought into circuit and thereupon prepares a circuit through the winding of the relay 3 which is further controlled by voltage-responsive means 6 in such a way that the relay 3 is energized only at a predetermined point in a cycle of the alternating current supply 1 and is de-energized only at the end of a half-cycle thereof when the voltage has the same polarity as it had during the first half-cycle when the relay was energized. Thus energization of the relay 3 removes the direct current premagnetization of the transformer by opening contacts 9, 10 and connects the alternating current supply 1 to the transformer by closing contacts, 4 5, the alternating current initially magnetizing the core in the opposite sense to the remanent magnetism therein. Alternatively the contacts 9, 10 may be associated with the relay 7, in which case the desired effect is produced by remanent magnetism, or with the device 6 and further it may be desirable to limit the period of premagnetization.
Patent GB-745993-A (GB)
Title: Improvements in or relating to doors
Inventor: LINDSEY ERIC STANLEY
IPC: E05F5/12
Filed: 1954-03-08
Abstract: 745,993. Doors. CASTON, BARBER, Ltd. April 14, 1954 [March 8, 1954], No. 6724/54. Class 20(3). In doors comprising two hinged elements 1, 2 having strips 6, 7 along the opposite faces of their free edges to mask the gap between these edges which are adjacent to one another when the doors are closed, in order to ensure that the doors are closed in the right order, i.e. to prevent strip 7 from being engaged by strip 6 and so stopping door 1 from fully closing, a shaft 10 carried by the stationary frame 13 carries arms 8, 9 of unequal length having rollers 14, 15 at their free ends. The arms normally incline downwardly by an amount limited by a stop and, if it is attempted to close door 2 first, the roller 15 obstructs door 2 in such position that door 1 can pass freely with strip 6 clearing strip 7. As door 1 reaches fully closed position a striking plate contacts roller 14 and rotates shaft 10 to clear the roller 15 from the path of the door 2 which may therefore now be moved to closed position. The invention is of particular application to fire-resisting doors.
Patent GB-1048051-A (GB)
Title: Oil seal means for shafts
Inventor: HAIGH CHARLES ROY
IPC: F16J15/32
Filed: 1964-02-18
Abstract: 1,048,051. Oil seals. BORG-WARNER CORPORATION. Feb. 18, 1964, No. 6762/64. Heading F2B. An oil seal for a shaft, e.g. an engine crankshaft 11, comprises a rubber &c. sealing ring 19 formed by two abutting semi-circular segments each comprising an outer peripheral portion 21 of wedge-shaped cross-section reinforced by an embedded rigid half-ring 23 of greater dimension radially than axially and an inner peripheral portion 23 having an obliquely directed sealing lip 24, the portion 21 of the ring being mounted in a corresponding wedge-shaped groove 16 in the shaft housing 13 and a surface 25 on the lip 24 engaging the shaft. Annular ribs 28, 29, 30 on the face 27 of the ring engage the adjacent wall 18 of the groove 16. One end of each segment is radial, whilst the other end is moulded at a slight angle from a radius.
Patent GB-1019372-A (GB)
Title: Process for the production of acrylonitrile
Inventor: EYGEN CYRILLE VAN
IPC: B01J21/00
Filed: 1962-02-21
Abstract: Acrylonitrile is prepared by contacting acrolein, ammonia, oxygen or an oxygen-containing gas and optionally an inert diluent gas at elevated temperature with a catalyst consisting of at least one arsenite and/or arsenate of an element less electronegative than arsenic, such as Fe, Bi, Cd, Al, Ca, Mg, Zn, Sn, Zr, Cr, Co, Pb, Ni, Mn, Sb, V, Cu, B, Mo and W. Carriers may be used for the catalyst.ALSO:Arsenites and/or arsenates of elements less electronegative than arsenic are prepared by the action of arsenic acids on said elements or a salt, oxide or hydroxide thereof, or by double decomposition reactions.  The products, useful as catalysts for acrylonitrile production (see Division C2), may be activated or stabilized by treatment at various temperatures in the presence of air, ammonia, steam or mixtures thereof.  Specified elements are Fe, Bi, Cd, Al, Ca, Mg, Zn, Sn, Zr, Cr, Co, Pb, Ni, Mn, Sb, V, Cu, B, Mo and W.ALSO:Catalysts for acrylonitrile production (see Division C2) consist of at least one arsenite and/or arsenate of an element less electronegative than arsenic, which catalysts may contain an excess of an arsenic oxide or oxide of the said element, and which may be supported, e.g. on pumice stone, colloidal silica, alumina or carborundum.  The catalysts may be activated or stabilized by treatment at various temperatures in the presence of air, ammonia, steam or mixtures thereof.  Specified elements are Fe, Bi, Cd, Al, Ca, Mg, Zn, Sn, Zr, Cr, Co, Pb, Ni, Mn, Sb, V, Cu, B, Mo and W.
Patent GB-557422-A (GB)
Title: Improvements in or relating to wheel chocks
IPC: B64F1/16
Filed: 1942-05-19
Abstract: 557,422. Wheel chocks. MORGENSEN, O. May 19, 1942, No. 6807. [Class 103 (i)] A chock particularly for aeroplane wheels comprises a base frame 1 to which is pivotally attached a V-shaped toe piece 4 integral with a normally upwardly inclined frame 7 supported by a strut 11 which is detachably connected to plates 10, 12 on the members 7, 1 by pins 13, 14. To permit adjustment of the effective length of the strut a number of holes 22 is provided therein for the pin 13. The frame 7 may be pivoted to the member 4 instead of being integral with it. The means for attaching the strut to the frame 7 may instead comprise a spigot carried by a rotatable sleeve on the transverse bar 9 of the frame 7 and adapted to enter the end of the strut. The frame 1 is provided with a web 16 to prevent the chock from sinking into soft ground. The disposition of the bar 9 with respect to the toe piece 4 is so arranged that when the wheel tyre is in engagement with the bar 9 the tyre further overlies the toe piece at the parts 20, 21 so that it is pressed on to the ground. The chock may be withdrawn by a cable 18.
Patent GB-995523-A (GB)
Title: Magneto-hydro-dynamic generator with cooled duct walls
IPC: H02K44/12
Filed: 1964-02-19
Abstract: 995,523. Generators operating by electromagnetic interaction with fluids. BROWN, BOVERI & CO. Ltd. Feb. 19, 1964 [Feb. 21, 1963], No. 6902/64. Heading H2A. The walls of a magnetchydrodynamic generator duct comprise coolant carrying pipes which are disposed parallel to the gas flow and increase in diameter in the direction of gas flow. The generator comprises combustion chamber 1 and diverging duct 4 through which the high temperature plasma flows in direction 5. Water is supplied to manifold 7 and flows along the diverging pipes 6 to the outlet manifold 8 and is used as the feed water for a steam raising plant (not shown). The surface of the pipes in contact with the plasma is coated with ceramic material to prevent corrosion and the wall thickness of the pipes may vary along the duct.
Patent GB-1570773-A (GB)
Title: Mixing of picture signals in the production of printing surfaces
IPC: H04N5/265
Filed: 1978-02-21
Abstract: In the method, a picture copy is scanned optoelectronically and recorded again as printing forme, picture signals being mixed prior to the recording. The mixing operation is controlled by a per se two-level control signal (S) with a gradual transition between the levels inside a mixing region. The control signal (S) may be derived, for example, from a picture signal, a colour signal, a mask signal or certain characteristics of the picture copy. A first picture signal (A) to be mixed is modulated with the control signal (S). A second picture signal (B) to be mixed is modulated with the inverted control signal (1 - S) added to a reference signal. The modulated picture signals are then added in order to obtain the mixed signal (C). The main fields of application are the inset copying of picture copies in order to obtain graded junctions at picture contours, and colour and/or tonal corrections in order to alter the influence of correction signals in certain areas gradually. <IMAGE>
Patent GB-778874-A (GB)
Title: Improvements in scaffolding clamps or couplers
IPC: E04G7/18
Filed: 1955-03-09
Abstract: 778,874. Scaffold clamps. SCAFFOLDING (GREAT BRITAIN), Ltd., and RICHARDS, L. S. Jan. 23, 1956 [March 9, 1955], No. 6942/55. Class 20(2) Scaffold clamp having a U-shaped member 10 adapted to receive one scaffold tube in the bight 11 of the U and having recesses 131, 141 in the limbs of the U to receive a second transverse tube, engaged directly by the clamping screw 17, has a clamping plate 16 adapted on assembly to be passed endwise through slots 132, 142 in the ends 13, 14 of the limbs of the U-shaped member, a lug 161 on the end of the plate preventing it passing right through the slot 132 and allowing the plate to pivot on the end 13 which is bent back at 133 to allow the plate 16 to be swung aside to allow a scaffold tube to be engaged with the clamp. The other end of the plate 16 is rebated at 163 to engage the edge of the slot 142 when the scaffold tubes are clamped by the clamping screw 17 in the plate 16.
Patent GB-1383181-A (GB)
Title: Convertible sette-bed
IPC: A47C17/165
Filed: 1973-02-13
Abstract: 1383181 Bed settees HOOVER-SENG CO 13 Feb 1973 [6 April 1972 12 Oct 1972] 7019/73 Heading A4J A bed settee especially for use in motor vehicles comprises a seat 118 and a backrest 119, the backrest being connected at each side to a base frame 120 by two crossed-links 125, 126 such that the backrest is movable through about 275 degrees from a forwardly facing settee position to an upwardly facing horizontal bed position in front of the seat 118 which is pivotally connected at its front end to a fixed cross-bar 87a and supported towards its rear end on a roller 137 connected between the base frame 120 and cross-link 126 by links 132, 134, respectively, such that when the backrest is moved between the settee and bed positions the seat is moved from an inclined settee position to a horizontal bed position.
Patent GB-626997-A (GB)
Title: Improvements relating to fluid driven rotary clothes driers
IPC: D06F49/06
Filed: 1947-03-13
Abstract: 626,997. Centrifugal machines. LEECH. G. J. March 13, 1947, No. 7021. [Class 23] [Also in Group XXXII] A centrifugal clothes drier is adapted to be supported in a wash trough by a frame having at least one resilient suction cup 15 for contacting a side 20 of the trough and one or more resilient members 17 adapted to seat in a corner of the trough. The frame comprises two parallel members 7 linked by a plate 9 carrying a spindle 52 and attached to a cover 12. The drum 13 is rotated about the spindle by fluid from a nozzle 24 impinging on vanes 25.
Patent GB-127368-A (GB)
Title: Improvements in Apparatus for Performing Work of Short Duration at Predetermined Times such as Automatically Operating Electric Switches, Gas and Water Valves and the like.
Inventor: GRAY JOHN
IPC: G04C23/22
Filed: 1918-04-26
Abstract: 127,368. Gray, J., (Warren Clock Co.). April 26, 1918. Clockwork-actuated valves. - Clockwork apparatus adapted for operating gas and water valves at predetermined times is described in the Specification as applied to an electric switch operating-device. The contacts 31, 32 are connected by a sector 30 of the switch C, which is swung by a spring 38 into and out of position during the revolution of a dial 20 driven through gearing by a synchronous motor 13. The dial 20 winds up the operating spring 38 constantly and uniformly and carries adjustable projections 21, 22 at different levels for engaging arms 36, 37 and so disengaging dogs 34, 35 which normally hold the switch C by engaging with teeth 27, 28 on the dial 26. The switch will thus, with the dial 20 graduated for twentyfour hours, be moved through a semicircle every twelve hours. Should the switch be required' to remain out ot action every seventh day, a cam 40 on a wheel 42, suitably driven, raises the dog 35 on its shaft so that it is level with a third tooth 29 on the dial 26, thus stopping the latter in such a position that the sector 30 will not complete the circuit. Reference has been directed by the Comptroller to Specification 11101/02, [Class 139, Watches &c.]
Patent GB-791132-A (GB)
Title: Improvements relating to radiant heaters
Inventor: MOULE GORDON HENRY
IPC: F24C7/06
Filed: 1955-03-10
Abstract: 791,132. Electric heating; reflectors. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 5, 1956 [March 10, 1955], No. 7086/55. Class 39(3) In heating materials or articles on a conveyer on to which radiant heat is directed by one or more infra red or other heaters 1 in a reflector 2 extending across the conveyer transversely to the path of movement of materials on the conveyer, the heater is pivoted about an axis 4 extending lengthwise of the reflector adjacent one side thereof and exterior thereto so that the heater is movable between positions in which reflected heat is directed to or away from the conveyer. The pivot comprises a rigid tube 4 extending along the exterior of the reflector along its whole length and supports the reflector against bending at its centre. The ends of the tube or bar 4 extend beyond the reflector and are journalled in bearings 7. The tube 4 is attached at intervals by brackets 5 to transverse support ribs 3 on the reflector and has at each end a radial arm 9 carrying a counter-balance weight 10. Rotation of the reflector is thus facilitated and may be effected manually or automatically on stoppage of the conveyer by withdrawing support from a counterbalance weight by the release of a no-volt relay in the circuit of an electrically driven conveyer. The reflector may be returned to it operative position manually or automatically on re-starting the conveyer, which may be continuously movable or vibratory. The reflector may pivot about a fixed tube 4, and the reflector then carries the counterweight.
Patent GB-253468-A (GB)
Title: Improvements relating to ploughshares and the like
IPC: A01B15/06
Filed: 1926-03-15
Abstract: 253,468. Wegner, W. March 15, 1926. Potato diggers.-Tha share or its cutting-part is made of V-shaped section and is secured on a correspondingly shaped part by means of a groove and feather. The shart a is adapted to slide on to the shaped part d of the breast b in the direction of its length, with a feather e fitting into a groove c. Longitudinal displacement of the share by the working pressure is prevented by the engagement of the end f of the feather with the end g of the groove c. There may be two grooves and feathers.
Patent GB-176802-A (GB)
Title: A process of manufacturing carbon bodies
IPC: H01K1/06
Filed: 1922-03-10
Abstract: Carbon bodies, for example filaments for electric lamps, are made by heating a metal body in an atmosphere of a carbon compound at such a temperature that by chemical reaction the metal is replaced by carbon.  For example, tungsten or molybdenum may be heated in an atmosphere of carbon tetrachloride at a temperature of from 1500 DEG to 1600 DEG  C., whereby the metal is converted into the chloride and volatilized.