baber/WOPTO huggingface dataset:
Patent GB-983996-A (GB)
Title: Electrical apparatus
IPC: H01H21/02
Filed: 1962-07-13
Abstract: 983,996. Rotary switches; starting prime movers. BENDIX CORPORATION. July 13, 1962 [Aug. 17, 1961], No. 27064/62. Headings H2B and H2H. A combined ignition, starting and accessory control switch 10 has a rotor body 41 carrying contacts 31, 32, 34 co-operating with contacts on a stator body 16, the rotor 41 being of resilient rubberlike material and having contact receiving bores 44 which are resiliently distortable in an axial direction to bias the rotor contacts axially towards the stator. When rotated from a stable " off " position either counterclockwise to the accessory actuating (" Acc ") position or clockwise to the " Run and Acc." position by key handle 79, the rotor is stably held in either position, against the tendency of the twisted neck 43 of the rotor to return the rotor to the " off position, by the engagement of contacts 31, 34, within circular enlarged portions of an annular groove 60 in the stator 16. When turned still further clockwise from the " Run and Acc:" position to the " Start and Acc." position, the neck 43 is subjected to additional torsion which is sufficient to return the rotor to the " Run and Acc." position when the key handle 79 is released by the operator. Contact 32 is shorter than contacts 31, 34, and consequently only engages the stator contacts when the rotor is thrust axially forwardly towards the stator, in which position it is frictionally held until positively withdrawn by the operator. The key can only be removed from the switch in the "off" position of the rotor. In applying switch 10 to a single cylinder engine for an outboard motor having magneto ignition, a starting motor 100 and an accessory such as a light or radio at 105, 125, the magneto winding 102 is operatively connected to the engine spark plug at 121 and all the lead wires extend to separate contacts of a separable connector 99 and thence to the switch 10. Reference has been directed by the Comptroller to Specification 870,586.
Patent GB-1478011-A (GB)
Title: Clip suitable for holding down a railway rail
IPC: C22C38/04
Filed: 1974-09-02
Abstract: 1478011 Clip for holding down railway rail PANDROL Ltd HIGHVELD STEEL and VANADIUM CORP Ltd 2 Sept 1974 [6 June 1973] 27084/73 Heading C7A A clip, suitable for holding down a railway rail, e.g. of the form disclosed or claimed in British patents 861473, 1078709 or 1213762, is made of a silico-manganese steel containing:- C at least 0À5% (e.g. 0À5-0À7%) Mn up to 1À4% (e.g. 0À5-1À4%) Si up to 2À2% (e.g. 1À4-2À2%) V more than 0À03% (e.g. 0À05-0À35%), the balance, apart from impurities, being Fe. Impurities specified in examples are 0À13% Cr, 0À15% Cu, 0À14% Ni, 0À012% P and 0À005% S. The steel may be heated to 1250‹C and hot-rolled, reheated to 850-950‹C, quenched and tempered at 400-700‹C. Alternatively the steel may be heated to 1150-1250‹C, cooled to 1000‹C rolled in stages as it cools to 850‹C, allowed to cool and tempered at 400-700‹C.
Patent GB-1334745-A (GB)
Title: Semiconductor devices
IPC: H01L29/08
Filed: 1971-04-19
Abstract: 1334745 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [17 April 1970] 27101/71 Heading H1K A semi-conductor device comprises emitter E and collector C regions, of one conductivity type, adjacent a surface of a semi-conductor body, within and separated from each other by, a base region B of the opposite conductivity type, which base region contains a further region C<SP>1</SP> of the one conductivity type situated at a small distance from the collector region so that an application of a reverse biased voltage, above a threshold level, to the collector causes a depletion region to extend between the collector and the further region. The further region may be in the form of a buried layer extending beneath both emitter and collector regions, the structure giving rise to two amplification factors, one below the threshold voltage where low amplification is obtained from an effective lateral transistor structure, and a second, higher, amplification factor above the threshold voltage where in addition to acting as a lateral transistor, the emitter, further region and base therebetween acts as a transverse transistor, the further region being electrically connected to the collector region by the depletion region. The collector region may be in the form of a ring surrounding the emitter, the further region being produced from a diffusion into the substrate 1 prior to the deposition of epitaxial layer 2 into which layer the emitter and collector regions are diffused. The device may be of silicon with boron doping. A common emitter circuit embodying the device is illustrated.
Patent GB-263262-A (GB)
Title: Improvements in or relating to manhole or like covers for roads or pathways
IPC: E02D29/14
Filed: 1925-10-29
Abstract: 263,262. Needham, W. Oct. 29, 1925. Manhole frames and covers.-Manhole and like frames a are formed around the inner periphery with a plurality of spaced recesses b having the sides b<1> inclined downwardly towards each other, and the covers d, Fig. 8, for such frames are formed with a series of corresponding projections e so arranged that the interengaging inclined sides support the whole weight of the cover. No parts other than the inclined sides make supporting contact. The cover and frame may be of cylindrical, conical, rectangular or similar form, and in the first two cases the sides of the recesses are arranged radially. The projections e on the cover extend below the bottom part of the latter. Notches f in the cover are adapted to receive a lever g for lifting the cover from its seating.
Patent GB-1394198-A (GB)
Title: Annealing furnace and method for its operation
IPC: C21D1/773
Filed: 1972-09-15
Abstract: 1394198 Continuous heat treatment furnaces ALLEGHENY LUDLUM INDUSTRIES Inc 15 Sept 1972 [17 Sept 1971] 27139/74 Divided out of 1394197 Heading F4B [Also in Division C7] The subject-matter of this Specification is substantially the same as that disclosed in Specification 1,394,197, but the claims are concerned with a method for heat treating strip material in coil form which comprises positioning a coil in vestibule means at the entrance end of an elongated furnace, sealing said vestibule means and purging the same of gaseous contaminants, thereafter transferring the coil from the vestibule means to the furnace and moving said coil from the entrance end of the furnace through successive heating and cooling zones of the furnace while circulating through said furnace a non-oxidizing gas, and finally removing the coil from the exit end of said furnace, said coil being heated within an initial furnace section and after it has been transferred into the furnace from the vestibule means while the space around the coil is evacuated before the coil is subjected to said non-oxidizing gas within the furnace, whereby water of hydration will be removed from the surfaces of said strip material.
Patent GB-841714-A (GB)
Title: Improvements in or relating to the casting of metals
Inventor: ATTERTON DAVID VALENTINE
IPC: B22D7/10
Filed: 1957-08-28
Abstract: A process for the production of exothermic linings for hot tops, used in connection with metal-casting moulds, consists in spraying the surface of the hot top with a powdered exothermic material and a binding agent and setting the binder.  Thus, aluminium, an oxidizing agent and fluoride dispersed in gum arabic or colloidal sodium silicate is sprayed into a preheated hot top. Alternatively, the water is evaporated by heating after spraying. The surface may then be treated with sodium hydroxide or aluminate.  In a modification, the binder is sodium silicate set by CO2 sprayed together with, or separately from, the exothermic material.  In a similar manner, an alkaline solution may be used as in Specification 808,400.  The binder may be an oil (e.g. linseed) set by an accelerator (e.g. a percompound, benzoyl peroxide or metallic naphthenate) as in Specification 812,583.  Or the binder may be a resin which is subsequently cured.  One exothermic material consists of aluminium, sodium nitrate, potassium chlorate, iron oxide, cryolite, calcium fluoride and sand.  Others may be as described in Specifications 774,490, 774,491, 769,719 or 627,678.  Specifications 793,022 and 805,592 also are referred to.ALSO:A process for the production of exothermic linings for hot tops consists in spraying the surface of the hot top with a powdered exothermic material and a binding agent and setting the binder.  Thus, aluminium, an oxidizing agent and fluoride dispersed in gum arabic or colloidal sodium silicate is sprayed into a preheated hot top.  Alternatively, the water is evaporated by heating after spraying.  The surface may then be treated with sodium hydroxide or aluminate.  In a modification, the binder is sodium silicate set by CO2 sprayed together with, or separately from, the exothermic material.  In a similar manner, an alkaline solution may be used as in Specification 808,400.  The binder may be an oil (e.g. linseed) set by an accelerator (e.g. a per-compound, benzoyl peroxide or metallic naphthenate) as in Specification 812,583.  Or the binder may be a resin which is subsequently cured.  One exothermic material consists of aluminium, sodium nitrate, potassium chlorate, iron oxide, cryolite, calcium fluoride and sand.  Others may be as described in Specifications 627,678, 774,490, 774,491 or 769,719. Specifications 793,022 and 805,592 also are referred to.
Patent GB-503066-A (GB)
Title: Device for preventing clearance leakage in steam turbines
IPC: F01D5/04
Filed: 1938-09-17
Abstract: 503,066. Steam turbines. WIBERG, O. A. Sept. 17,1938, No. 27191. [Class 110 (iii)] In a radial flow turbine the steam flow passages 19 .. 22 are displaced sidewise in relation to each other, and the walls are provided with projections 13 in order to reduce leakage. Several forms of projection are shown.
Patent GB-1146341-A (GB)
Title: Improvements in and relating to apparatus for measuring out materials by weight
Inventor: LAYCOCK GEOFFREY
IPC: G01G13/00
Filed: 1966-06-17
Abstract: 1,146,341. Drag scraper; shoots. UNDERGROUND MINING MACHINERY Ltd. 16 June, 1967 [17 June, 1966], No. 27209/66. Headings B8E and B8S. [Also in Division G1] Apparatus for measuring out quantities of building materials comprises an upright tower A which is provided with a peripheral wall and is partitioned internally into a plurality of separate compartments for the building materials, each compartment being supplied with material by a rake T mounted on the tower and provided with a discharge outlet D below which a common weigh hopper F is arranged. The discharge outlets D are provided with discharge doors E and the weigh hopper F which is operatively connected to electric load cells or a mechanical weighing mechanism is provided with a discharge door G which is opened to discharge weighed material to a conveyer J. The conveyer J which conveys material from inside the tower and through an aperture in the side of the tower may comprise a belt or a skip movable on a track. Radially extending walls M may be provided on the outside of the tower A in alignment with the compartment walls (C), (Fig. 2, not shown), within the tower A, the walls M forming bays in which material is stored. The rake T which is lined with manganese steel or other hard wearing material and mounted on a rotatably supported articulated arm R is arranged to urge the stored material in each bay to pass through an opening in the top of the compartment associated with that bay to await discharge to the weigh hopper F. The rake arm R may be provided with rams U 1 , U 2  hydraulically operated from a cab P from which feeding and discharge of material can be manually controlled and at which the weight of a load in the hopper F is indicated. The doors E may be automatically controlled to cut-off feed of materials to the hopper F when a predetermined weight of materials is in the hopper F.
Patent GB-945869-A (GB)
Title: Chicken picking finger and method of making same
IPC: A22C21/02
Filed: 1962-07-16
Abstract: 945,869. Plucking poultry. M. P. AVERY. July 16, 1962 [May 3, 1962], No 27255/62. Heading A2U. [Also in Division B5] A chicken picking finger A comprises an elongated body 100 of soft elastic material e.g. rubber, in which is embedded a flexible, non-extensible, reinforcing sleeve 110 of braided strands 26 The strands 26 may also be straight or helically wound without t overlapping. The finger may comprise spaced semi-circular ribs 106, and a base 104 notched at 103 for mounting on a frame B and provided with an outer surface 102 of coloured material to indicate the inner, unseen construction of the particular finger. The sleeve may have a circular, elliptical rectangular or square cross-section. The manufacture of the finger is described. Specification 938,140 is referred to.
Patent GB-151987-A (GB)
Title: Improvements in and relating to carburettors for internal combustion engines
IPC: F02M19/03
Filed: 1920-09-27
Abstract: 151,987. Berthelot, D. P. A., and Guilbaud, H. J. F. Oct. 2, 1919, [Convention date]. Spray carburettors.- A nozzle designed to supply a mixture of constant proportions, comprises an air tube 1 terminating in a nipple 2 and enclosed within a fuel tube 9 fitted with a cup 6 provided at its upper end with a conical mixing chamber o the outlet 8 of which is smaller than the orifice in the nipple 2. The tube 1 is screwed into the tube 9 and is provided with a conical shoulder 5 at the base of the nipple 2 which coacts with the base of the cap 6 to regulate the fuel supply. The tube 1 is adjusted by rotating a notched head 20 thereon, and is locked by a spring latch 19 mounted on a washer 16 which secures in position cork packing 15 surrounding the tube 1. An excessive flow of fuel at high speeds is prevented by the baffling effect of the air drawn through the nipple 2. In a modification, in which the fuel supply is not adjustable, the tube 1 is fixed, and the cap 6 is provided with a sleeve which screws on to the tube 1 and is provided with a fuel orifice. The nozzle may enter the choke tube 25 co-axially or at right-angles. A slow-running nozzle, substantially similar to the main nozzle but having a fixed air tube 1 and an adjustable cap 6, may be provided, this nozzle opening into a passage discharging at the level of the throttle 26. According to the Specification as open to inspection under Sect. 91 (3) (a), the orifice 8 may be equal to the orifice in the nipple 2. This subject-matter does not appear in the Specification as accepted.
Patent GB-534680-A (GB)
Title: New or improved glasses
IPC: C03C3/15
Filed: 1939-10-07
Abstract: 534,680. Glass manufacture. KODAK, Ltd. (Eastman Kodak Co.). Oct. 7, 1939, No. 27441. Addition to 462,304. Drawings to Specification. [Class 56] An optical glass having a high combined refractive and dispersive index is made by fusing a batch containing the oxides of lanthanum, thorium, and boron together with tantalum oxide or tungsten oxide, or both, and either barium oxide, calcium oxide, strontium oxide, or magnesium oxide, or more than one of these last named oxides, but not containing more than 10 per cent. of silica. The batch may also contain a small proportion of sodium oxide, potassium oxide, lithium oxide, aluminium oxide, or beryllium oxide, or more than one of these oxides. A number of compositions are given in the Specification. For example, 28 per cent. of lanthanum oxide, 18 per cent. of tantalum oxide, 12 per cent. of thorium oxide, 12 per cent. of barium oxide, and 30 per cent. of boric oxide produce a glass which has a refractive index of 1.750 and a dispersive index of 47.
Patent GB-1494803-A (GB)
Title: Hydrophilic acrylamido polymers
IPC: C08F20/58
Filed: 1975-06-30
Abstract: 1494803 Cross-linked hydrophilic polymyers DATASCOPE CORP 30 June 1975 [16 July 1974] 27501/75 Heading C3P A water-insoluble cross-linked hydrophilic polymer contains at least 95 wt. per cent of a polymerized monomer of formula where R is a straight or branched chain alkylene radical containing up to 10 carbon atoms, R<SP>1</SP> is hydrogen or an alkyl group containing 1-6 carbon atoms, and R<SP>11</SP> is a monovalent cation cross-linked by up to 5 wt. per cent of a crosslinking agent or of a copolymer, terpolymer, grafted polymer of polymer blend of the monomer with other comonomers, the other comonomers being present in an amount of up to 50 wt. per cent of the cross-linked polymer. The cross-linking agent is preferably an olefin glycol dimethacrylate, pentaerythritol di-, tri- or tetra-methacrylate or diallyl phthalate; and R<SP>11</SP> is a H atom or Na, K or NH 4 <SP>+</SP> ion. The preferred monomer is 2-actylamido 2-methyl propane sulphonic acid.
Patent GB-603392-A (GB)
Title: Improvements in or relating to stabilised power supplies with variable output voltage
IPC: G05F1/52
Filed: 1945-10-19
Abstract: 603,392. Voltage control. STANDARD TELEPHONES & CABLES, Ltd., and ROGERS, D. C. Oct. 19, 1945, No. 27541. [Class 38 (iv)] A stabilised adjustable voltage is obtained from the mains by means including a tetrode or pentode valve feed back amplifier V2 whose screen voltage is derived from the stabilised adjustable output voltage but is constant for all values of the output voltage within the range of adjustment. The anode of valve V2 is applied to the grid of valve V1 connected in series with the mains, and the cathode voltage is stabilised by a neon lamp V3 so that the current through R1, R2, R3 is constant. Adjustment of the output voltage is obtained by varying R1 so that the screen and grid voltage of V2 are substantially unaffected. The cathode of V2 may be earthed and the neon lamp V3 connected between carth and a negative source, Fig. 3 (not shown).
Patent GB-627026-A (GB)
Title: Improvements in and relating to collapsible furniture
IPC: A47C9/02
Filed: 1946-09-13
Abstract: 627,026. Tables &c. KINSLEY, A. M. Sept. 13, 1946, No. 27544. [Class 52 (iii)] In a table, chair &c. in which each leg 2 is hinged to fold under the table top &c., the leg is hinged at 5 to an angle bracket 9 and a strut 19, fixed to the leg at 20, is pivoted to the angle bracket at 21, the axle of the pivots 5 and 21 being in alignment, but laterally spaced. The short arm of the angle bracket is secured to a diagonal brace 7 and 11 and the long arm, screwed to the table &c. frame, has a slot 22 to slidably receive a projection 30 on a spring stay 26 pivoted to the leg at 27. The slot has a recess into which the projection 30 snaps to lock the leg in its supporting position.
Patent GB-228111-A (GB)
Title: Improvements in or relating to cooling radiators
IPC: F28D1/03
Filed: 1924-11-18
Abstract: 228,111. Lamblin, A. Jan. 25, 1924, [Convention date]. Plate apparatus.-Relates to means for joining the two thin metal sides of a cooling element in a radiator along substantially parallel lines to subdivide the flow of water into narrow streams. As shown in Figs. 4 and 5, the thin sheets 5, 6 are held together by wires 25, 26 interlaced in holes 27, 28 and secured by running molten tin, in a strip 30, so as to fill the holes. The elements are subsequently blown out by compressed air to assume, between the connecting lines, the shape shown in Fig. 5 in cross-section. In the example shown in Figs. 12 and 13, grooves 31 are stamped in each sheet, the contacting bottoms of the grooves being sewn together by wires 25, 26. A strip 30 of tin is run in to secure the sheets as in the previous example. Fig. 15 shows a method of closing the edges of thin metal elements without the use of solder. A layer 40 of rye-flour paste, white lead, &c. is placed between the abutting edges 38, 39, which are then clinched.
Patent GB-935033-A (GB)
Title: Improvements in or relating to methods of manufacturing rubber-to-metal bonded components
Inventor: HIRST ARCHIE JOHN
IPC: F16D3/28
Filed: 1960-08-09
Abstract: 935,033. Universal joints. METALASTIK Ltd. July 20, 1961 [Aug. 9, 1960], No. 27625/60. Class 80 (2). [Also in Group XXXII] A method of making a rubber-to-metal bonded article comprises using a fusible metal member to form a core defining a working space for the rubber and/or to space apart metal or rubber or metal and rubber parts of the article during the rubber-to-metal bonding operation and then melting out the fusible metal member, the melting-point of the fusible member being higher than the temperature reached by the article during the moulding operation and not sufficiently high as to cause damage to the rubber, or to the rubber-to-metal bond, when it is melted out. In making a universal coupling the two plates, Fig. 2, forming an annular disc 10 are brought together with a gasket-like fusible metal ring 18 interposed between each pair of corresponding part-spherical, cup-like portions 15, 16 and rod-like inner members 12, with part-spherical protuberances 13, are located centrally within the assembled cup-like portions. Unvulcanized rubber, forced into the space between each protuberance 13 and its enclosing cup-like portions 15, 16, is then cured causing the moulded rubber to bond to the protuberances 13 and the cup-like portions 15, 16. The rings 18 are then melted out and the two annular plates are forced together to pre-compress the rubber, the plates being secured, e.g. by welding, around their inner and outer edges. Instead of having separate rings 18 a single gasket-like insert of fusible metal may be used having four apertures corresponding with the openings of the rings 18. Precompression may be accomplished partly by the take-up of space previously occupied by the fusible member 18 and partly by expanding the inner members 12. In making a flexible coupling, Fig. 3, two frustoconical rings 30, 31 of rubber are moulded between a metal interleafing 32 carried by a driving, or driven, flange 33 of the coupling, an outer cup-like portion 34 of a coupling sleeve 35, and an inner cup-like portion 36 which can be bolted to the sleeve 35, an annular fusible metal member 40 spacing the parts 34, 36. After the fusible member 40 has been melted out the part 36 is drawn up to-the part 39 and is secured by studs introduced into tapped holes 38, the rubber rings 30, 31 being compressed. To define the outer face 44 of the ring 30 a core of fusible metal 40 may be used. In a modification the cup-like portions 32, 34, 36 may be convergent away from the coupling sleeve 35, a thinner fusible member being used and the portions 34, 36 being finally forced apart to compress the rings 30, 31 and to enlarge the working space for the rubber. The fusible member is advantageously made of an alloy of lead and tin.
Patent GB-1343826-A (GB)
Title: Coloured cement
IPC: C08F2/00
Filed: 1971-06-14
Abstract: 1343826 Coloured cements GENERAL PORTLAND Inc 14 June 1971 [30 June 1970] 27752/71 Heading C1H Coloured cement is obtained by adding 0À2- 5% of an oxide of a metal of Groups IVB, VB or VIIB no later than the burning, and rapidly quenching the clinker: V, Zn, Mn and Ti (e.g. as ilmenite) oxides are specified. Ti without Fe will give a white cement.