baber/WOPTO huggingface dataset:
Patent GB-1014624-A (GB)
Title: Improvements in or relating to electrical insulators
Inventor: CHESTER PETER FRANCIS
IPC: H01B17/52
Filed: 1963-12-12
Abstract: 1,014,624. Insulators. CENTRAL ELECTRICITY GENERATING BOARD. Nov. 12, 1964 [Dec. 12, 1963], No. 49210/63. Heading H2C. An insulator for supporting a conductor carrying A.C. has a length of electrically insulating material incorporating one or more elements of ferroelectric material located in the A.C. field so that the insulator is heated by ferro-electric hysteresis, appropriate choice of the Curie temperature allowing the degree of heating to be controlled. In a preferred embodiment (Fig. 2) ferro-electric hollow cylinders 29 are sandwiched between insulators 30 and are arranged around an insulating core 22 which is screwed at each end into metal pieces 23 and 24. Metal inserts 32 electrically connect the hollow cylinders 29 which are held under pressure by a metal cylindrical bellows 33 so that a conductive path exists between a conductor and support. The ferro-electric material can have a Curie temperature between - 5‹ C. and 350‹ C. by alloying titanates, stannates, tantalates, niobates, zirconates and vanadates of elements such as barium, calcium, strontium, silver and lead. In a further embodiment (Fig. 1, not shown) a ferro-electric core is contained within an insulator body and is connected between cast iron or aluminium end caps of the insulator. Alternatively a ceramic ferro-electric material may be fired on a porcelain insulator. The insulator sheds 31 can be made of polyethylene or of the insulating material of the core 22 and insulator body which may be resin-bonded glass fibre or resin-impregnated wood.
Patent GB-1480945-A (GB)
Title: Production of alkylene glycol ether esters of organic carboxylic acids
IPC: B01J31/24
Filed: 1974-11-14
Abstract: Alkylene glycol etherates of carboxylic acids are prepared. Starting from an oxirane, the compound is reacted with a carboxylic acid ester using a catalyst. The abovementioned catalyst has the formula MQn, the symbols being defined in Claim 1. It is preferred to use a catalyst and a cocatalyst, the cocatalyst being selected from the compound group comprising at least one nitrogen atom, phosphorus atom, antimony atom, arsenic atom or bismuth atom and at least one halogen atom or a carbon atom is directly bonded to the corresponding atom of the nitrogen, arsenic, phosphorus, antimony or bismuth.
Patent GB-1304819-A (GB)
IPC: B01L7/00
Filed: 1971-10-26
Abstract: 1304819 Incubator; test tube holder BECTON DICKINSON & CO 26 Oct 1971 [4 Dec 1970] 49732/71 Heading B1X An incubator for heating objects to a predetermined temperature comprises a body member enclosing an inner chamber and having an opening for inserting- objects into the chamber, a hood for extending over the opening, a heater for heating the air within the chamber, a thermostat which senses the temperature of the air and is connected to the heater for controlling the heater to maintain the predetermined temperature, circulating means for circulating the air over the heater and throughout the chamber, whereby heat is transferred to the air and is uniformly distributed throughout the chamber. In the preferred embodiment the openings are closed by spring loaded platforms displaceable when objects are inserted. A carrier for test-tubes and microscope slides (Fig. 7, not shown) which can be used in the incubator is of plastics material with end panels having upward extensions which form handles.
Patent GB-1204812-A (GB)
Title: Improvements in or relating to telescopic hydraulic mine roof chocks
Inventor: BOWER LEWIS ROBERT
IPC: F15B15/16
Filed: 1968-10-23
Abstract: 1,204,812. Hydraulic chocks. A. G. WILD & CO. Ltd. 23 Oct., 1968, No. 50302/68. Heading E1P. A three-stage hydraulic chock 1, 1, 17 has means such as an axially-extending rod or bolt 19 for rendering a portion of the crossseotional area of the largest unit 17 ineffective so that the cross sectional areas subjected to fluid-pressure in the two stages defined by the three units are equal or substantially equal whereby the upper unit 1 telescopes into the intermediate unit 7 and then the latter telescopes into the lower unit 17 on retraction whilst the reverse procedure take place on extension. The unit 7 is provided with a hollow tubular member 13 which in a modification serves as a cylinder for a plunger carried by the rod or bolt having passage means therein, see Fig. 2 (not shown). (For Figure see next column)
Patent GB-1122834-A (GB)
Title: Improvements relating to trouser pressing machines
IPC: D06F71/28
Filed: 1966-11-10
Abstract: 1,122,834. Trouser press. NORMBAU MASCHINENFABRIK G.m.b.H. & CO. 10 Nov., 1966 [13 Nov., 1965], No. 50503/66. Heading D1A. A trouser press, for trousers shown in dotdash lines, comprises a pair of clamps 2, 3, Fig. 2, which grip the crease edges of the trousers and stretch them out before steam then air are admitted to the clamps to remove the wrinkles and then dry the trousers. The clamps comprise, as shown in fig 8, two support surfaces 31, 34 and two leaves 33, 35 which are moveable relative to the support surfaces and one crease of each leg is clamped between each relative part. The clamps may be operated by pneumatic pistons or by Bowden cables to move them into and out of the clamping position. Steam and subsequently air is admitted to the clamps through pipes 55, 57 and this passes beyond the area of the clamps into the main part of the trousers to remove unwanted creases. The surfaces of the clamps are covered with a material of high friction to prevent removal when steam is admitted to allow for different pads 89, 90 are provided to allow for different thicknesses of trouser material. Spreading means 6 are provided in the bottom of the trouser leg to hold the leg open and devices at 18, 19 and 21 are provided to hold the waistband.
Patent GB-1328235-A (GB)
Title: Rectifying device
IPC: H04N3/19
Filed: 1970-10-23
Abstract: 1328235 Transformers MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 23 Oct 1970 [29 Oct 1969 (5) 9 Dec (4)] 50595/70 Heading HIT [Also in Division H2] In a rectifying device, e.g. for supplying EHT to a TV receiver, comprising a plurality of series-connected semi-conductor rectifier elements 25, overheating of some of the rectifying elements 25 due to unequal distribution of selfcapacitance, is minimized by positioning the high voltage side of the secondary winding of the transformer feeding the rectifier 25, opposite the A.C. side of the rectifier 25 and the lower voltage side of the secondary winding opposite the D.C. side of rectifier 25. As described rectifier 25 comprises a stack of silicon or selenium diodes encapsulated in epoxy resin and separated from the line flyback transformer by an insulator 39 having high dielectric constant. The tapped primary 22 is located alongside the multi-section secondary 23 in a container 50 filled with oil 48. In Fig. 9 (not shown) rectifier 25 is replaced by three stacks in series, each stack being interposed by a heat dissipating conductive member. The stacks are arranged in zig-zag manner in relation to the axis of the transformer. In Fig. 11 (not shown) three stacks of rectifiers 25 are arranged in partly overlapping parallel manner.
Patent GB-1530617-A (GB)
Title: Soil cultivating machines
IPC: A01B63/22
Filed: 1975-12-10
Abstract: 1530617 Soil cultivating machines C VAN DER LELY NV 10 Dec 1975 [16 Dec 1974] 50717/75 Heading A1B A cultivator comprises rotary soil working members 3 carried by a frame portion 1 to which are detachably secured supports 12 provided with arms 15, 18 having one or two ground wheels 23 and with a transverse tool bar 28 supporting tools 36, the support arms 15, 18 being pivoted at 17 and connected by hydraulic rams 33 for raising the tools 36 for transport (Fig. 5). The supports 12 are clamped at 13, 14 to transverse beams 9 on the frame portion 1. The frame portion 1 is supported by a vertically adjustable roller 11. The tool bar 28 is adjustable vertically and longitudinally on the arms 12. The tools 36 may be seed drills, planters, or inter-row cultivators. Where only one ground wheel 23 is used, it is mounted centrally. The tool bar 28 may be of rectangular section with its longer sides horizontal.
Patent GB-1129555-A (GB)
Title: Miniature switches
IPC: H01H23/16
Filed: 1965-12-03
Abstract: 1,129,555. Electrical switch contacts. CUTLER HAMMER Inc. 3 Dec., 1965 [3 Dec., 1964], No.51425/65. Heading H1N. A movable contact 12 mounted on a terminal 8 is selectively engageable with fixed contacts 10, 11, the centre terminal 8 having two strips abutted for part of their length and spaced apart within the housing to define the legs 8c of a supporting cradle for the movable contact. The housing 2 is in at least two parts and the terminals 8, 10, 11 emerge from the housing by way of aligned slots 2a, 2b formed in abutted parts 2 of the housing and are retained in position by the co-operation of notches 8a, 10b and 11b therein with the inner and outer surfaces of the housing. The movable contact is actuated by a member 14 moved by a spring-biased plunger 16 of a hand lever 18. One of the fixed contacts 10 may be shorter than the other so that the movable contact 12 is stable when it engages it and is returned to the centre off position from engagement with the other contact 11 when the lever 18 is released. In a double-pole arrangement a dividing wall with corresponding grooves is interposed between the two halves 2 and divides the casing into two contact compartments.
Patent GB-1167507-A (GB)
Title: Synthetic Granular Caviar and a method for its preparation
Inventor: NESMEYANOV ALEXANDR NIKOLAEVIC
IPC: A23L17/30
Filed: 1966-11-17
Abstract: 1,167,507. Synthetic caviar. INSTITUT ELEMENTOORGANICHESKIKH SOEDINENY. 17 Nov., 1966, No. 51537/66. Heading A2B. A synthetic granular caviar comprises granules containing gelatin, a vegetable tanning agent (e.g. a tea extract) and a gelled aqueous solution or suspension of edible proteins other than gelatin (e.g. casein or protein of yeast, chlorella or soya bean). The granules may also contain glycerol, starch, dextrin, agar-agar, pectin, corn oil, cottonseed oil, cod liver oil, herring juice, lecithin, vitamins (e.g. ascorbic acid), dyes of animal or vegetable origin, flavouring agents (e.g. salt or sodium glutamate) and preservatives. The caviar may be prepared by dispersing drops of a gel-forming mixture comprising at least gelatin and the protein solution or suspension, into oil, at least a lower layer of v/hich is at a temperature to gel the mixture, tanning the gelled granules by immersing in tanning solution, dyeing the granules, and mixing with flavouring and preserving agents and oils or treating with oil containing proteins, flavouring, preserving and emulsifying agents.
Patent GB-1165018-A (GB)
Title: Furnace Charging Apparatus.
IPC: C21B7/18
Filed: 1966-11-17
Abstract: 1,165,018. Charging shaft furnaces. ISHIKAWAJIMA-HARIMA JUKOGYO K.K. 17 Nov., 1966 [4 March, 1966], No. 51543/66. Heading F4B. A furnace charging apparatus includes a passage 7 leading from a hopper 8 into a second hopper 1, the passage including gas-tight sealing means comprising a valve member 20 which in its closed position seats on a valve seat (21, Fig. 3) and in its open position is retracted into a recess 19 so that material passing along the passage 7 does not contact the valve member. The passage 7 delivers material through a shoot 5 into the hopper 1 which is closable by a bell (2, Fig. 1). A third hopper (4), closable by a second bell (3) is located beneath the hopper 1. More than one passage 7 may be provided, the shoot 5 being rotatable for positioning beneath a selected passage.
Patent GB-1221526-A (GB)
Title: Method and apparatus for treating foam compositions
Inventor: ROBERTS FRANK SOMERVILLE
IPC: B29C37/00
Filed: 1967-11-14
Abstract: 1,221,526. Sheet casting. DURIE & MILLER (HOLDINGS) Ltd. 13 Nov., 1968 [14 Nov., 1967], No. 51688/67. Heading B5A. [Also in Divisions B2 and C3] Indentations are formed on the surface of cellular rubber or plastics sheet materials by spreading by means of a spreading device, e.g. a doctor blade, a foamed composition on a base which is moving so as to convey the resulting sheet of spread foam to a setting zone, providing one or more scooping devices mounted above the surface of the spread foam in the region between the spreading device and the setting zone, causing each scooping device to be alternately moved towards and away from the foam so as to scoop foam out from the surface of the spread foam at the lower part of its trajectory, and thereafter rendering the indentations made by each scooping device permanent by setting the foam. A heat-setting foamed composition may be used and the foam scooped out is fed back to the foam awaiting spreading. The base may be fabric or paper, or a hessian backing for tufted fibres of a carpet. Apparatus for forming the indentations comprises conventional foam spreading and setting equipment, one or more scooping devices mounted between the spreading device and the setting zone above the surface on which the foam is spread, mechanism by which each scooping device can be alternatively moved towards and away from the spread foam, and means for collecting the foam which is scooped out from the surface of the spread foam by each scoop at the lower part of its trajectory.
Patent GB-517336-A (GB)
Abstract: 517,336. Purifying water; filters. CARRING, C. A. C. July 23, 1938, No. 21931. Convention date, June 25. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 20, 1939.] [Class 46] Apparatus for use in a well, for sterilizing and filtering water, consists of a receptacle having a compartment open at the top and with openings in the wall for unfiltered water and sterilizing means, the bottom of the compartment being constituted by a filter container which is loosely supported and is of such width that it can be lifted out of the receptacle for clearing or other purposes. As shown in Fig. 1, a receptacle 3 in a well 1 has a valved opening 9 for inlet of unfiltered water and an opening 15 for supply of sterilizing liquid from a container 13. The sterilizing liquid is supplied automatically by suction as pure water is withdrawn from an outlet 30 by a pump 29. Supports 5 are provided for a filter container 4 into which liquid from the sterilizing compartment flows through an adjustable pipe 21. The container 4 may be removed from the well by a rope 32 and roller 31. In a modification, Fig. 2, the receptacle 45 is fitted in a well 43 which is constructed adjacent to the well 40 containing the liquid to be purified, the liquid passing through a valve-controlled pipe 42 to the sterilizing compartment. The Specification as open to inspection under Sect. 91 comprises also constructions in which the filter container is integral with an upper sterilizing container, the supply of sterilizing agent to which is automatic depending on the level of water in the well. In a further construction the filter container is of annular form surrounding the sterilizing container. Liquid flows upward through the filter. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1131106-A (GB)
Title: Improvements in or relating to photographic flash devices
IPC: G03B15/04
Filed: 1965-12-09
Abstract: 1,131,106. Flash photography. EASTMAN KODAK CO. Dec. 9, 1965 [Dec. 14, 1964 (2)], No.52324/65. Heading G2A. A flash device for receiving a flash cube comprises a socket to receive the centering spigot of the cube, contact terminals to engage successively the pairs of lead-in contacts of the cube, and spring means to locate the spigot in the socket and to urge the cube into its functional position. As shown in Fig. 1, a hollow central spigot 19 of the flash cube 14 fits into a socket 39 of the device 13 where it is retained by U-shaped springs 36. The springs 36 have inward facing arms which co-operate with ramped surfaces 20 on the spigot 19 to hold the cube 14 in the firing position. The device has a foot 25 for fitting into a camera accessory shoe which contains the camera flash circuit. Batteries 32 within the housing 11 of the device are connected directely to one of the flash terminals 43, and to the other terminal 42 via a spring urged member in the foot 29, through the camera flash circuit, and back through the conductive body 11 of the device. In a further modification shown in Fig. 8, the device is incorporated into a camera. The cube is inserted into socket 125, depresses an ejection lever 156, and removes a stop 145 from the path of the shutter blade 144 to increase the exposure time. On depressing the release 113, a detent 141 is moved out of the path of a striking plate 139 which opens the shutter blades of known type. Before the detent 141 has moved fully out of the path of plate 139, the end 135 of a contact element 134 contacts a switch arm 147 connected to terminal 146 forming a short circuit. When the detent breaks contact with the plate 139 the short circuit is broken and the flash bulb in contact with terminals 127 and 128 ignited.
Patent GB-1080870-A (GB)
Title: Tunable microwave oscillator
Inventor: WARREN STANLEY FRANCIS
IPC: H03B5/18
Filed: 1964-12-23
Abstract: 1,080,870. Valve oscillating circuits. TRAK MICROWAVE CORPORATION. Dec, 23, 1964, No. 52336/64. Heading H3F. [Also in Division H1] The description is substantially identical with that in Specification 1,080,868, but the claims differ.
Patent GB-1269468-A (GB)
Title: Process for hot working of copper
Inventor: SCHWAN PAUL RICHARD
IPC: B21B3/00
Filed: 1970-11-04
Abstract: 1,269,468. Continuous casting; rolling; improving physical properties. VAN STRAATEN CHEMICAL CO. 4 Nov., 1970, No. 52544/70. Headings B3F, B3M and B3V. Oxide formation during hot working of copper or copper alloys is inhibited, and oxide already formed is removed, by maintaining the heated copper surfaces in contact with an aqueous solution containing from 1-20% of ammonium chloride. In the specific example described (Fig. 1, not shown) a hot rod of copper produced by charging a stream of molten copper to the periphery of a groove-and-band continuous casting machine, is passed through successive rolling stands where its area is reduced. The ammonium chloride which may be in solution with other ingredients, such as corrosion and bacterial inhibitors, emulsifiers, lubricants, surface-active agents, defoamers, emulsifiers and coupling agents is applied to the rod before it enters the first stand and between subsequent stands by spray pipes. The solution may also be applied in a cooling chamber, any solution remaining on the end of the rod after it leaves being removed by an air wipe before it passes to the coiler. Examples of suitable solutions containing ammonium chloride are given in the Specification, the concentration being chosen to suit the process. In certain circumstances, concentrations of 0À25 to 10% and even 0À5 to 5% are suggested.
Patent GB-1532649-A (GB)
Title: Production of polycrystalline silicon
IPC: H01L29/12
Filed: 1975-12-23
Abstract: 1532649 Deposition from gaseous state MONSANTO CO 23 Dec 1975 [26 Dec 1974]  52562/75 Heading B1F [Also in Division C1] High purity crystalline silicon suitable for semiconductor use is made by using an elongate tubular reaction vessel 13 comprising a carbon tube and having at one end an inlet 23 for the supply of a gaseous stream of silicon-containing reactants and at one end a reactant exhaust outlet 21 and having as deposition surface an interior carbon tube 15  lined with graphite 25. The interior of the vessel is purged with an inert gas, the deposition surface is heated to a temperature sufficient for formation of silicon (suitable 1100 to 1200‹C) by means of carbon resistance heater 27, a stream of silicon-forming reactants (suitably a mixture of hydrogen and or more compounds selected from silanes and silicon tetrachloride) is introduced into the vessel to form a layer of high purity polycrystalline silicon on the graphite deposition surface, the surface cooled, and the polycrystalline silicon layer removed for further processing As shown a quartz heat shield 39 may surround the heater, and a double walled enclosure vessed 41, the vessel also being provided with cooling water inlet 43 and outlet 45, and inlets and outlets for purge gases and reactants. In a preferred embodiment, after purging with inert gas, the graphite deposition surface is heated to a temperature sufficient for deposition of silica, e.g. 700 to 800‹C, and a stream of a silicaforming composition, suitable tetraethyl silicate vapour, is introduced into the vessel to form a layer of silica on the graphite deposition surface. The deposition surface is then heated to a temperature sufficient for formation of silicon, a stream of siliconforming reactants is introduced into the vessel to form a layer of high purity crystalline silicon over the silica, and the deposition surface is then cooled and the silicon layer removed for further processing, suitably by removing the liner from the vessel and separating it from the silicon by burning it off in air. Silica is then removed from the silicon by etching in an aqueous solution of hydrofluoric acid.
Patent GB-1080549-A (GB)
Title: Improvements in or relating to light transmitting polymeric sheet
Inventor: DOWNING TOM ANTHONY
IPC: C08J5/18
Filed: 1964-12-29
Abstract: 1,080,549. Light-transmitting polymeric sheet. IMPERIAL CHEMICAL INDUSTRIES Ltd. Dec. 1, 1965 [Dec. 29, 1964], No. 52650/64. Heading B5A. [Also in Division G2] Light-transmitting sheets are made by polymerizing a liquid (that normally forms a transparent solid polymer) in a casting cell to form a flat sheet while the cell is maintained in a horizontal position. The liquid comprises monomer containing a single CH 2 =C< group per molecule and, when introduced into the casting cell, has uniformly dispersed within it insoluble translucent solid particles having maximum linear dimensions of 2-2000Á (preferably between 10-100 Á), a refractive index for the sodium D line that differs from that of the solid polymer formed by polymerization of the monomer alone by at least 0À05 but not more than 1À5 (preferably at least 0À1 but # 0À4), and in such quantity that their total surface area is 1-50 times preferably 3-10 the area of the lower surface of the layer of liquid in the cell, and the viscosity of the liquid being such that the particles settle in the cell to form a thin uniform layer adjacent said lower surface before polymerization. The monomer is preferably methyl methacrylate or a mixture of methyl methacrylate (at least 60% by wt.) with a copolymerizable compound containing a single ethylenically unsaturated group per molecule. The monomer may be partially polymerized, or contain some polymer, being in the form of a syrup, which may have a viscosity of 0À1-10 poises. The polymerizable liquid may also contain up to 5% by wt. of a copolymerizable monomer having at least 2 CH 2 =C< groups per molecule, so as to render the copolymer formed non-thermoplastic. The solid particles may be aluminium oxide, titanium dioxide, zinc carbonate, barium sulphate, calcium carbonate, calcium silicate, calcium magnesium orthosilicate, calcium molybdate, anhydrous calcium sulphate, calcium oxide, calcium sulphide, magnesium aluminate, mica, lead carbonate, zinc oxide or zinc sulphide, and may form a layer of thickness substantially equal to the maximum particle size in the sheet. A small amount of dyestuff may be added to the liquid to give it a grey neutral tone. The liquid may also contain a polymerization initiator, light stabilizers and an antistatic agent. The polymerized sheet may be used as a back projection screen or an illuminated sign or ceiling.