baber/WOPTO huggingface dataset:
Patent GB-923149-A (GB)
Title: Improvements in or relating to apparatus for welding tubing or cable sheaths
Inventor: DONELAN JAMES ARTHUR
IPC: B23K13/04
Filed: 1960-05-09
Abstract: 923,149. Making tubes and cable sheaths; drawing; welding by pressure. PIRELLI GENERAL CABLE WORKS Ltd. March 20, 1961 [May 9, 1960], No. 16319/60. Classes 83 (2) and 83 (4). Apparatus for the longitudinal welding of a tube or cable sheath made from metal strip, comprises means for bending the strip to form the tube and means for supplying high frequency current to the bent strip including contacts wiping the strip and forming part of or incorporated in forming or closure means for the strip. The strip is formed in roll stages until its edges nearly abut and it then passes into a tapered bore die 1, Fig. 1, of insulating refractory material having two conductive segments 6 set therein which supply current of 500 kc. per sec. to heat the edges which are pressed together and welded in a rear portion 3 of the die having a slot 8 for the weld bead. The welded tube emerges into a water-cooled extension 5. In a modification, a slotted metal cylinder 9, Fig. 2, having a tapered bore forms the closure die to which H.F. current is supplied at points near the end of the slot. The strip edges are heated by current supplied by the die and abut about a third of the way along the slot 10. A second slot 12 may be provided to allow the bore to be varied under transverse forces. In a further embodiment the last stage of the forming means comprises an insulating die plate 13, Fig. 3, having radial contact 6 separated by an insulating segment 7 forming an edge guide. After passing through the die, the edges converge and are welded at a point 11 and the welded tube passes between squeeze rolls 15. A die plate similar to the plate 13 but annular is pivoted about a diameter. According to the Provisional Specification the last forming stage may comprise four rollers, the top roll of which is formed of two outer conductive portions separated by an insulating portion and connected to the H.F. supply. The outer portions bear on the edge faces or on the strip adjacent the edges.
Patent GB-751053-A (GB)
Title: A process for the production of -Ð-xylylene dichloride
IPC: C07C17/32
Filed: 1954-06-02
Abstract: In the production of p-xylylene dichloride by reacting benzene, formaldehyde or a substance yielding it, and hydrogen chloride in a suspension medium in the presence of zinc chloride, hydrogen chloride gas is introduced into a suspension of formaldehyde or a substance yielding it, zinc chloride and boron phosphate or trioxide in a suspension medium until the suspension has become clear, benzene is then added in small portions, the water of reaction which forms as a lower layer is then separated, and hydrogen chloride gas or concentrated hydrochloric acid, and, if desired, more suspension medium, are then introduced into the reaction mixture.  According to an example, hydrogen chloride is introduced into a suspension of paraformaldehyde, zinc chloride and boron phosphate in carbon tetrachloride until a clear solution is formed.  Benzene is then added dropwise with cooling. A lower aqueous layer forms and is separated.  Further zinc chloride, boron phosphate and carbon tetrachloride are added to the remaining reaction mixture followed by concentrated hydrochloric acid or further hydrogen chloride.  A further aqueous layer forms and is separated.  The b-xylylene dichloride is crystallized from the upper layer by cooling.  Aqueous formaldehyde can be used instead of paraformaldehyde.
Patent GB-1000517-A (GB)
Title: Preparation of tocopherols
IPC: C07D311/72
Filed: 1962-04-30
Abstract: Alpha tocopherol is obtained by oxidizing a non-alpha tocopherol whereby the chroman ring opens forming a tocopheryl para quinone which is reduced to the corresponding hydroquinone, chloromethylating the hydroquinone to replace hydrogen atoms on the phenyl ring by chloromethyl radicals, reducing the chloro methyl radicals to methyl radicals, and closing the ring to form alpha tocopherol.  The quinone may be formed by oxidation with ferric chloride, gold chloride, silver nitrate or ceric sulphate, and the quinone may be reduced to the hydroquinone with hydrogen in the presence of palladium or Raney nickel, with a hydrosulphite or an alkali metal hydride or borohydride.  The chloromethylation may be carried out with chloromethyl ether or formaldehyde and hydrochloric acid, and the product reduced with zinc dust and hydrochloric acid or zinc amalgam. The ring may be closed by reaction with stannous chloride or zinc chloride.  Examples are given.  Specifications 809,895 and 827,391 also are referred to.
Patent GB-1145077-A (GB)
Title: Improvements in or relating to burner control apparatus
IPC: F23N5/00
Filed: 1966-04-14
Abstract: 1,145,077. Controlling burners. HONEYWELL Inc. 14 April, 1966 [19 April, 1965; 3 Sept., 1965; 3 March, 1966], No. 16463/66. Heading F4T. [Also in Division G1] A burner is controlled in dependence on its temperature and the level of carbon monoxide in the surrounding atmosphere using a sensor sensitive to both temperature and carbon monoxide. The sensor 13, Fig. 14, is housed in a chamber 21 adjacent the burner 20 and is connected to control a valve 18 in the fuel supply to the burner. Air and carbon monoxide flows into the chamber 21 through an aperture 14 and then into the burner body 11 through inlet 15 where it is mixed with the fuel and subsequently ignited. A bimetallic strip 16 may be provided in the housing 21 to control the intake of air dependent on the temperature at the burner, so that, for normal operation of the burner, the temperature of the sensor is maintained substantially constant and its output is dependent on the carbon monoxide content of the atmosphere. For abnormal operation, e.g. producing abnormally high or low temperatures, the sensor is sensitive to temperature as well. In a second embodiment of the burner apparatus, Fig. 15 (not shown), the air flowing into the housing surrounding the sensor 13<SP>1</SP> does not flow into the burner body. The sensor comprises a piece of a metal oxide, e.g. stannous or stannic, zinc, nickel, tungsten, antimony, copper oxide, or other material whose resistance or capacitance changes with temperature and carbon monoxide content in the surrounding atmosphere. In one embodiment, utilizing the change in resistance of an oxide, a thin layer or film 11, Fig. 1, of oxide is deposited on an insulating substrate 10, e.g. of glass or ceramic material. Two-electrodes 12, 13, e.g. thin layers of gold, are deposited one at either end of the film. Alternatively, Fig. 3 (not shown), the electrodes 12, 13 may take the form of a plurality of connected fingers extending towards each other. In a second embodiment, utilizing the change of dielectric constant of the oxide, an oxide film 11, Fig. 2 (not shown), is sandwiched between two layers of metal 12, 13, acting as electrodes, the electrode 12 being deposited on the substrate 10 and the electrode 13 being a thin gaspermeable layer of gold. In all embodiments, if a sufficiently thick layer of oxide is used, the substrate 10 may be omitted.
Patent GB-914758-A (GB)
Title: Improvements in or relating to braking apparatus for motor vehicles
Inventor: FARMERY GEORGE KENNETH
IPC: B60T8/18
Filed: 1960-05-10
Abstract: 914,758. Linkwork. CLAYTON DEWANDRE CO. Ltd. May 3, 1961 [May 10, 1960], No. 16475/60. Class 80 (3). [Also in Group XXXIV] In a fluid-pressure braking apparatus for motor vehicles including a control valve having an actuating element 15 which is operated by a foot pedal, the movements of the foot pedal are transmitted to the actuating element by means comprising a lever 6 pivoted at 5 to a plate 2, a tappet 13 pivoted at 14 to the plate 2 and engaging the actuating element 15, and a roller 10 interposed between the tappet 13 and the lever 6, the roller being carried on the end of a piston-rod 11 which is moved to vary the mechanical advantage of the arrangement by supplying air to a cylinder 12 through either manual control means or control means operated automatically in accordance with vehicle load. Lever 6 is coupled with a foot pedal lever 3 via a link 7 incorporating a spring 9 for introducing a " travel " characteristic.
Patent GB-777524-A (GB)
Title: An improved chicken and like brooder
IPC: A01K31/19
Filed: 1955-06-08
Abstract: 777,524. Rearing-appliances for poultry. HAMER, A. [Representative of HAMER, G.]. March 20, 1956 [June 8, 1955], No. 16522/55. Class 5(2).  A brooder comprises a canopy formed of triangular sheets 10 of transparent thermoplastic material, the shape of the canopy being maintained by means of stays 17 threaded through horizontal pockets in the sheets 10 and joined together by tubular connecting pieces 19. Suitable heating means, such as an infra-red lamp, is inserted into the brooder via the hole 11 and ventilation holes 20 are provided, the device being suspended by the strap 13 so that its base is just clear of the ground.
Patent GB-261810-A (GB)
Title: Improvements in or relating to machines for levelling soles of boots or shoes
IPC: A43D35/00
Filed: 1925-06-27
Abstract: 261,810. British United Shoe Machinery Co., Ltd., (United Shoe Machinery Corporation).. June 27, 1925. Sole-levelling.-In a sole-levelling machine of the kind described, for example, in Specification 1269/07, in which pressure, applied by a shaped levelling form, travels over the sole, the form is so mounted as to be rotated during travel over the sole and to be permitted heightwise movement to follow the shape of the sole. A moulded roll, Fig. 7, for use in the machine is formed with a part 2, concentric with the axis of the roll, for operating on the forepart of the sole, a suddenly rising bulged portion 4 for operating on the ball and shank parts of the sole, and a heel end portion 6 similar to the portion 2. In the machine illustrated, the shoe to be levelled is carried by a pivotally mounted jack 102, Fig. 1. A levelling roll 108 of the form described is provided at its ends with pinions 110 having trunnions 112, Fig. 5, journaled on the forward arms of a carriage 114. The extended ends of the trunnions engage blocks 116 slidable in guidebars 118 carrying racks 142 meshing with the pinions 110. The rear ends of the bars 118 are pivoted at 124 and the carriage 114, and with it the bars 118, is held yieldingly downwards by spring-held rods 128 adjustable by nuts 132. The roll 108 is preferably adjustable about its axis and is supported in inoperative position by bearing surfaces 138. When the carriage 114 is reciprocated along the guide bars 118 by means of links 150, 148 and pinion 156 and gear segment 158 the roll 108 is rotated by the pinions 110 and racks 142. As the roll 108 reaches the ball line of the sole its bulging shank portion 4, owing to its greater diameter, engages the shank of the sole with a wiping action, and not merely a rolling action as at the forepart and heel end of the sole.
Patent GB-1513565-A (GB)
Title: Cryosurgical instruments
IPC: A61B18/02
Filed: 1975-04-22
Abstract: 1513565 Cryosurgical instruments SPEMBLY Ltd 30 March 1976 [22 April 1975] 16595/75 Heading A5R  A cryosurgical instrument has a refrigerant fluid stored in a bottle 1 and supplied to the tip 8 of a probe 6 via line 5 and a restriction 5A at which a reduction in pressure provides cooling, the expanded fluid then passing through the interior of an insulated hand held body 6A of the probe to atmosphere A via line 9. During a warming mode fluid from bottle 1 passes through a restriction 17 into the body 6A via lines 15 and 9 in opposition to the flow from the tip. In operation of the instrument button 33B is depressed thereby connecting fluid from bottle 1 via spool valve 33 and one way valve 34D to a bellows 31 which moves spool valve 30 to the left to connect the bottle via line 5 to the tip. Valve 33 allows fluid to be supplied also to bellows 35A which moves spool valve 35 so that fluid leaving the tip can exit to atmosphere via lines 9 and 14. For the warming mode the button 33B is released and line 34C vents to atmosphere via spool valve line 33C to relieve bellows 35A. The path to body 6A via lines 15, 9 is then open. Relief of the pressure in bellows 31 is controlled by variable restriction 34G and thus valve 30 will only slowly shut off the fluid from bottle 1 and reduce the instrument to its shut-off condition. A cooling/warming cycle can be repeated by depressing and releasing button 33B. A branch exhaust line 40 with restriction 40A vents to atmosphere and is effective during the warming mode to purge condensation. A spool valve 41 in line 15 provides either restricted or unrestricted fluid to the body 6A during the warming mode, or is able to block exhaust or venting from the tip.
Patent GB-845212-A (GB)
Title: Injection pump
IPC: F02M41/14
Filed: 1957-05-27
Abstract: 845,212. Speed governors. SATZGER, E. May 27, 1957 [May 30, 1956], No. 16688/57. Class 57. [Also in Group XXVIII] A speed governor comprises weights 18 on the end of bell crank levers 21<SP>1</SP> pivoted at 20 to the rotating cylinder of a fuel injection pump (see Group XXVIII). The levers act upon the control sleeve 22<SP>1</SP> to vary the pump delivery, which is loaded by a spring 23 the compression of which may be varied through a lever 25, 26 acting on a slidable abutment 24 of the spring. In a modified form one of the arms 21<SP>1</SP> may be directly connected to the adjusting sleeve of the pump, the other arm forming only a counterweight.
Patent GB-110231-A (GB)
Title: Improvements in and connected with Brakes on Electric Tramcars and like Vehicles.
Inventor: WILKINSON RICHARD HENRY
IPC: B61H13/00
Filed: 1916-11-22
Abstract: 110,231. Wilkinson, R. H., and Turner, W. H. Nov. 22, 1916. Brakes, arrangement and disposition of. -Each armature shaft of the driving- motors 1, 2 of an electric tram or railway car has an extension 4 which is fitted with a brake drum 6 co-operating with an encircling band 7 tightened in known manner by means of a pivoted bell-crank lever 9 operated from the driver's platform. The operating-mechanism consists of links 16 connected to the levers 9 and to chains 17 passing round fixed outer pulleys 24, 27 and inner pulleys 25, 26 mounted upon a rocking-lever 30 in connexion with a platform lever. The initial tension of the band 7 is adjusted by means of a bolt 14 on one arm of the lever 9 engaging a slotted link 15 attached to one end of the band 7. The upper portion of the band is held in position on the drum by means of a strap 18 carrying adjustable studs 20, and the lower portion by a spring 21 engaging a hook 22 on the band.
Patent GB-760226-A (GB)
Title: Improvements in and relating to automatically controlled pressure casting machines
IPC: B22D17/14
Filed: 1953-06-17
Abstract: 760,226. Casting - machines. REGIE NATIONALE DES USINES RENAULT, and SOC. DES HAUTS FORNEAUX ET FORGES D'ALLEVARD. June 17, 1953 [Sept. 3, 1952], No. 16776/53. Class 83 (1). A machine for casting metals under pressure comprises a lower-bed 15b, Fig. 2a, a bottomplate 11 resting on the bed including the lowerhalf of injection-cylinder 26 and a verticallydisposed cylinder 39, Fig. 2, for a piston 40 for ejecting the cast article, an intermediate-plate 12 including the upper half of cylinder 26 and charging-and-injection holes 36, d, respectively, a mould 13 secured to the plate 12, a top-plate 14 clamping parts 13, 12, 11 against bed 15b, and an upper bed-plate 15 supported on pillars 15a from bed 15b. Plate 14 is lowered by hydraulicjack 53 controlled by device 61, and raised by hydraulic-jacks 16, 17, controlled by device 62, and has hooks 28-31 in slots in plate 12, and bars 32, 33 are movable by jack 34 to engage or release the hooks, whereby when the plate 14 is raised with the hooks released, the mould is opened, and after ejection of the cast-article, the plate is lowered, the bars moved to engage the hooks, and the plate raised to open the injectioncylinder for removal of the residue therefrom. Relay 21 actuated by abutment 20 prevents operation of jack 34 when the plate 12 is in the raised position. Operated in connection with jack 34 are two jacks 35 which move dogs c to clamp or release plate 12 from plate 11. The jacks 34, 35 are double-acting hydraulic-jacks controlled by manually-actuated electromagnetic-valves 63, 64. Cooling-cores are movable into the mould and withdrawn therefrom by the pistons 22<SP>1</SP>-25<SP>1</SP> of hydraulic-jacks 22-25, the inward-movement being controlled by device 56 and the withdrawal by device 57. The ejectorpiston 40 is actuated by an hydraulic-jack 51 controlled by device 60. The injection-piston 37 is advanced by jack 42, controlled by device 58, and retracted by jacks 41, 43, controlled by device 59, and an obturating-piston 38 is advanced by jack 46, controlled by device 55, and retracted by jacks 45, 47, controlled by device 54. Piston 38 is advanced after withdrawal of piston 37 to break-off the sprue, and then retracted, whereupon the mould is opened and piston 40 advanced into hole d to eject the cast-article. The devices 54-62 each consist of a valve-mechanism 4, Fig. 1, operated by a lever 9 pivoted at 9a to connect one side of a jack 1 to a supply of hydraulicpressure-fluid 10 or to exhaust 10<SP>1</SP>. Lever 9 is actuated by a piston 5a operated by compressed-air under the control of electromagnetic-valves 6, themselves controlled by an electronic timing-means 7, the devices being individually adjustable. Each jack has a switch 8 which. limits the extension of the jack.
Patent GB-276477-A (GB)
Title: Improvements in steering dampers for motor cycles
IPC: B62K21/08
Filed: 1926-07-05
Abstract: 276,477. Brampton Bros., Ltd., and Crawshaw, A. L. July 5, J926. Steering-mechanism. - A steering-damper for motor-cycles is provided with operating means including a cam, which is associated with the steering-column at its upper end and is adapted to be rotated in two planes lying at right-angles to each other, movement of the cam in one plane serving to adjust the pressure on the friction surfaces of the damper, while movement in the other plane causes the damper to be quickly locked in operative engagement or released. A cam or eccentric 15 is pivoted at 16 to a rod 14 and engages a cap &c. 17 at the upper end of the steering-column 1, so that when turned through 180‹ in a vertical plane by a lever 18, it quickly applies the damper by raising the rod 14 and a sliding sleeve 2, which has a head 3 adapted to press a spring 4 against the lower fixed plate 6 of the damper, the upper plate of which turns with the column 1. The sleeve 2 is prevented from turning relatively to the column 1 by means of a transverse pin 12 engaging a slot 11 and constituting the usual pin employed for connecting together the two sides of the fork. The rod 14 screws into the sleeve 2, so that the usual screw adjustment of the damper may be effected by rotating the rod 14 by means of the lever 18 used as a handle. The damper may be arranged at the upper end of the steering-column, and the cam may be pivoted to the nut element of the screw adjustment mechanism.
Patent GB-936927-A (GB)
Title: A process for the production of photographic images by the silver salt diffusion process
IPC: G03C8/28
Filed: 1961-05-09
Abstract: 936,927. Photographic silver salt transfer processes. AGFA A.G. May 9, 1961 [May 11, 1960], No. 16850/61. Class 98 (2).  A water-soluble starch or a water-soluble polysaccharide starch degration product of molecular weight of at least 1000 and one or more monomeric polyhydric alcohols or mono- or di-saccharides are used as binding agents in the gelatine-containing positive layer to facilitate separation of the layers after image transfer. Specified polyhydric alcohols and mono- and di-saccharides are ethylene glycol, glycerine, hexane triol, pentaerythritol, trimethylolpropane, sorbitol, mannitol, sucrose, glucose and fructose. In examples, starch or its degradation product or dextrin is mixed with one or two of the polyhydroxy compounds specified above and added to a gelatine solution containing colloidal silver sulphide, sodium thiosulphate, formaldehyde and saponia and cast on paper as the transfer layer. This transfer layer may be coated with a negative layer. A highly glossy surface on the transfer layer may be obtained by using starch and sucrose whereas by addition of pentaerythritol in place of sucrose a matt surface may be obtained. Specifications 687,751 and 814,154 are referred to.
Patent GB-165096-A (GB)
Title: Improvements in and relating to electric oscillation valves
IPC: H03B5/10
Filed: 1921-06-20
Abstract: 165,096. Huth Ges., Dr. E. F., (Assignees of Thuringische Landes-Universitõt Jena). June 18, 1920, [Convention date]. Thermionic oscillation generators.-In order to prevent the double wave produced by tightly coupling the tuned plate circuit of a valve oscillator to a resonant secondary circuit, the grid circuit of the valve is reactively coupled to the secondary circuit, and if desired also to the plate circuit. The couplings may be of the inductive, electrostatic, or resistance type; as shown in Fig. 1, the-grid circuit G is inductively coupled to the coil 14 in the tuned plate circuit I, and to the coil 24 of the secondary circuit II. Of the two oscillations produced, one is approximately in phase in the two circuits, and the other approximately 180‹ out of phase, so that either wave may be suppressed according to the position of a switch 3. In a modification, shown in Fig. 3, the grid circuit G is coupled only to the secondary circuit II by means of a coil 22 common to both circuits ; and the circuits I, II are coupled by a condenser 31. For high frequencies the condenser 31 may be omitted, the plate and grid affording sufficient internal coupling.
Patent GB-1236134-A (GB)
Title: Improvements in the manufacture of calcium hypochlorite
IPC: C01B11/06
Filed: 1969-04-01
Abstract: 1,236,134. Improved calcium hypochlorite. KLIPFONTEIN ORGANIC PRODUCTS CORP. Ltd. 1 April, 1969 [8 April, 1968], No. 16911/69. Heading C1A. A process for reducing the CaCl 2  content of a Ca(OCl) 2  product includes the steps of forming a cake of the product on a filter or centrifuge and contacting with a NaOCl solution in an amount less than the chemical equivalent of the CaCl 2 , while maintaining the cake on the centrifuge or filter. Preferably 40-70% of the chemical equivalent is used. The NaOCl may be added in the form of a 40% solution. The product may be obtained by chlorinating a suspension of Ca(OH) 2  in water.
Patent GB-130003-A (GB)
Title: Improvements in Pin Tumbler Locks.
Inventor: SCHROEDER FREDERICK WILLIAM
IPC: E05B27/04
Filed: 1916-11-25
Abstract: 130,003. Schroeder, F. W. Nov. 25, 1916. Locks, revolving-barrel; keys.-The flat key c of a pin-tumbler lock is provided with a groove c<6> along its operative edge, the angle subtended by the sides of the groove being less than the angle at the apex of each tumbler pin d, so that the points of the tumblers are out of contact with the edge of the key when this is being inserted. A projection on the casing extends into the keyhole and engages the groove c<6> of the key. The key has side recesses c<3> engaging with corresponding projections b<2> on the barrel. The key is provided with two operating-edges, so that it may operate one lock when inserted in one position, and a second lock when inserted in the other position. The notches c<5> and projections c<4> on one edge of the key are opposite the notches c<2> and projections c<1> respectively of the other edge.