baber/WOPTO huggingface dataset:
Patent GB-637096-A (GB)
Title: Wheels with resiliently suspended rim
IPC: B60B9/10
Filed: 1946-12-03
Abstract: 637,096. Vehicle wheels. MAIORCA, S. Dec. 3, 1946, No. 35792. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 13, 1947.] [Class 144 (i)] In a resilient wheel, the rim is suspended from the hub by means of two concentric series 24, 25 of circumferentiallyspaced rubber blocks, acting in shear under load and torque stresses, the blocks in the two series being arranged in staggered order and fixed to a floating metal ring 14 set edgewise in the mid-plane of the wheel. As shown, the blocks are bonded to the ring 14 and end-plates 27, 28 and clamped by bolts 39, 39<SP>1</SP> to flanged housings 23, 23<SP>1</SP> engaging stirrups 34, 34<SP>1</SP> on the rim and hub respectively. The Specification as open to inspection under Sect. 91 describes also a modification in which the rubber cushioning-elements are in the form of endless rings. This subject-matter does not appear in the Specification as accepted.
Patent GB-505228-A (GB)
Title: Drilling and like machine tools
IPC: B23Q5/32
Filed: 1937-12-28
Abstract: 505,228. Drilling-machines. ASQUITH, Ltd., W., and JOHNSON, A. Dec. 28, 1937, No. 35862. [Class 83 (iii)] In a drilling &c. machine having separate hand levers for controlling the spindle speeds and feeds, the change-speed gears are so arranged that the speed and feed indicators are both rotatable about a common centre so that they can be read simultaneously through a single sighting arrangement. As applied to a radial arm drilling machine an electric motor k' on the drill head x drives a shaft K through multiple belts k. Triple gears g<3> splined on the shaft K are movable into engagement with gears g<4> fixed to a shaft L which carries gears f engageable with a sliding pair f<1> splined on a shaft f<2> mounted coaxially with the shaft K. A gear f<4> on the shaft f<2> drives a slidable spindle-driving gear e<3> either through a gear e on a shaft e' coaxial with the shaft L, or directly through internal teeth e<5>, and the shaft M on which the gear e<3> is splined carries a worm m driving a wormwheel m<1>, Fig. 2, on the drill spindle N. The sliding gears g<3>, f<1>, e<3> are controlled by levers g<2>, f<3>, e<4> actuated by cams G<1>, F, E, the two latter being secured to a shaft D and the first driven from the shaft D through gearing G, g. The shaft D is connected by bevel gears a to a transverse sleeve a<3> carrying clutch teeth a<8> engaging teeth a<7> on a hand lever A<1>. Actuation of the lever A<1> rotates the cams E, F, G<1> for selecting the spindle speed required, a spring detent a<10> maintaining the setting, and the. lever may be disengaged from the clutch teeth against the pressure of a spring plunger a<9>. A dial A marked in drill sizes is attached' by a rod C to the shaft D and is observable through an aperture j, Fig. 3, in a cover J, to be read against spindle speeds on one side of the aperture and materials being operated upon on the other side. The spindle quill is fed from the shaft M through a sliding triple gear H<1> splined to the shaft, fixed gears h<2> on a parallel shaft, and a sliding double gear h<4> splined to a shaft h<5> coaxial with the shafts e<1>, L. A worm h<7> on the shaft h<5> drives the feed pinion through a worm-wheel and shaft, a clutch, and the hand feed worm drive. The sliding gears H<1>, h<4> are controlled by levers h<1>, h<6> respectively, actuated by a cam H on a sleeve h coaxial with the rod C and rotated by a hand lever B',which also carries a segmental indicator B lying adjacent the speed indicator A and reading in 'cuts per inch. Both indicators are thus observable simultaneously through the aperture j.
Patent GB-755629-A (GB)
Title: Improvements relating to single-rotor helicopters
Inventor: ROBERTSON FRANK HENRY
IPC: B64C27/06
Filed: 1953-12-24
Abstract: 755,629. Helicopters. SHORT BROS. & HARLAND,Ltd. Jan. 5, 1955 [Dec. 24, 1953], No. 35864/53. Class 4. In a helicopter of the kind incorporating only a single rotor which is of the hingeless or non- articulated type or which is of the type having articulated blades whereof the flapping hinges are off-set from the axis of rotation by an appreciable proportion (say from 15 to 20 per cent) of the radius of the rotor disc and wherein cyclic pitch control is provided to load the advancing blade more heavily than the retreating blade, the centre of gravity is off-set with respect to the axis of the rotor on the side at which the blades advance. The embodiment shown has non-flapping blades and the position CG of the centre of gravity is located forward and off-set from the rotor axis R on the side of an advancing blade B. To maintain lateral stability the blades have a greater pitch angle when advancing than when retreating which has the effect of increasing the loading of the blades when advancing and thereby moving the aerodynamic centre of the rotor sideways to lie in a vertical longitudinal plane passing through the point CG. Such arrangement also enables higher forward speeds to be attained. The forward location of the point CG with respect to axis R maintains longitudinal stability by providing a restoring moment when the aircraft pitches upwardly under external influence.
Patent GB-619361-A (GB)
Title: Improvements in or relating to needle valves
IPC: F16K29/00
Filed: 1946-12-04
Abstract: 619,361. Rotating valves on seats. RICARDO, H. R., and PEARSON, H. E. Dec. 4, 1946, No. 35917. [Class 135] A valve, suitable for use in gas liquefying apparatus, comprises a chamber A with inlet and outlet passages, in one of which a spring-loaded needle valve B seats,. and a valve stem C enclosed in a tubular casing D provided at its upper. end with a conical seating socket G<1> for a member H<1> which is connected to the upper end of the valve stem and also carries a worm wheel K by which it and the valve can be rotated to keep the latter free from ice, &c. The upper part of casing D is clamped to a fixed plate F by screwed collars F<1>, F<2>, and a thrust bearing J is inserted between the rotary member H<1> and its socket G<1>. Worm K is driven continuously or intermittently by a pinion K<1>. The valve stem carries at its upper end a collar C<1> which is connected by bellows N, O, to a tube L screwed on to member H<1>, the bellows serving as a gas-proof seal and also to transmit the rotary motion to the valve stem. The upper end of a valve loading spring P presses on an abutment provided with lugs Q<1> which are slidable in slots in tube L, and the loading force exerted by the spring can be adjusted by screwing down a collar L<3> against which the lugs Q<1> abut. The valve is opened by fluid pressure acting on it.
Patent GB-402600-A (GB)
Title: Improvements in or relating to loudspeakers
IPC: H04R1/28
Filed: 1931-11-27
Abstract: 402,600. Loud-speakers. KIRKE, H. L., 53, Rodenhurst Road, Clapham Park, London, HOWE, A. B., Shaldon, Hill View Road, Hatch End, Middlesex, and BARRETT, A. E., 62, Lessar Avenue, Clapham Common, London. Nov. 27, 1931, No. 36020/32. Divided on 378,286. Drawings to Specification. [Class 40 (iv).] A body adapted to be associated with an acoustic device, such as a loud-speaker, comprises sound damping material with a flaring passage therethrough, the nature and thickness of the damping material in the neighbourhood of at least one end of the passage being such that a large proportion e.g. 50 per cent or more, of any sound energy of lower frequencies, e.g. 100 cycles per second, falling thereon is absorbed. The invention also comprises a loudspeaker cabinet adapted to accommodate a diaphragm and having in one wall an aperture through which the diaphragm is adapted to radiate sound and having within it a flaring passage at least partially bounded by sound damping material, said aperture being adjacent to the smaller end of the passage and the thickness of the damping material in the neighbourhood of said aperture being not less than one half the diameter of said aperture. The constructions described are identical with those described in Specification 378,286 except that glass silk, cotton wool or acoustic down may be used as alternative damping materials and a modification is described in which the wire mesh former is omitted, the air passage being formed by securing fabric, such as muslin, around the aperture in the front wall of the cabinet, packing damping material fairly loosely between the fabric and the inner walls of the cabinet and then slightly stretching the fabric and securing it around the rear edge of the cabinet.
Patent GB-427297-A (GB)
Title: Process for the manufacture of 4-alkyl-, 4-cycloalkyl- and 4-aralkyldihydro-resorcinols
IPC: C07C35/14
Filed: 1934-12-17
Abstract: 4-Alkyl, cycloalkyl and aralkyl-resorcinols are subjected in the same manner as the resorcinol of the parent Specification to catalytic hydrogenation in presence of one equivalent of a strongly basic compound per molecule of the resorcinol compound. According to examples, 4 - phenyethylresorcinol, 4 - hexylresorcinol, 4 - propylresorcinol and 4 - cyclohexylresorcinol are hydrogenated in presence of aqueous sodium or calcium hydroxide, with hydrogen under pressure and nickel catalysts, to give the corresponding dihydrocompounds. Metals of the 8th group of the Periodic Table may be used as catalysts.ALSO:4-Alkyl, cycloalkyl and aralkylresorcinols are subjected to catalytic hydrogenation in presence of one equivalent of a strongly basic compound per molecule of the resorcinol derivative, with gaseous hydrogen and nickel or other member of the 8th group of the Periodic Table or compound thereof as catalyst.  The substituted resorcinol is dissolved in aqueous caustic soda or lime and treated with gaseous hydrogen under pressure.  The products are the corresponding dihydroresorcinols.
Patent GB-366642-A (GB)
Title: Improvements in rollers such for example as are used in calenders
IPC: D06C15/08
Filed: 1930-12-02
Abstract: 366,642. Rollers. GMINDER, E.; 26, Wernerstrasse, Reutlingen, Wurtemberg, Germany. Dec. 2, 1930, No. 36343. Drawings to Specification. [Class 42 (ii).] Rollers for calendering paper &c. are made partly or wholly of bast fibres which have been cottonized by chemical means, e.g. bleaching and boiling, whereby the gluten connecting the embryo fibres or bast cells is destroyed.
Patent GB-452506-A (GB)
Title: Improvements in and relating to the production of cellulose ethers
IPC: C08B1/06
Filed: 1934-12-20
Abstract: Cellulose ethers are prepared by acting on cellulose with a compound of copper in the presence of an alkali to form an alkali copper cellulose, and treating this with an alkylating or aralkylating agent in the presence of free alkali.  The alkli copper cellulose, e.g. sodium cupric cellulose may be obtained by the action of caustic alkali and copper hydroxide on cellulose, by causing cellulose to absorb caustic alkali in excess and working up with finely powdered copper salt, or by impregnating cellulose with a copper salt solution and treating the mixture with caustic alkali.  The product, with or without partial separation of the excess caustic alkali is treated with the alkylating agent, and the cellulose ether separated by treatment either with hydrochloric acid or a solution of alkali bisulphate.  Separation of the ether in flakes may be assisted by using the hydrochloric acid or bisulphate solution hot, or by adding also salts such as magnesium or alkali sulphate.  The cellulose ethers may be used for the manufacture of films, lacquers, filaments, glue-like liquids, or as starting materials for the manufacture of nitro, acetyl, and similar compounds.  The following examples are given: (1) sulphite wood pulp is mixed with powdered cupric chloride and introduced into caustic soda solution.  The sodium cupric cellulose formed is alkylated with methyl sulphate; (2) the cellulose is separated into fibres, treated with caustic soda solution and worked with cupric chloride.  The sodium cupric cellulose is treated with methyl sulphate and the product separated by means of alcohol containing hydrochloric acid; (3) sodium cupric cellulose is treated with methyl sulphate in toluene and the product separated by means of dilute sulphuric acid or a solution of sodium bisulphate and magnesium sulphate; (4) sodium cupric cellulose is treated with methyl sulphate in small portions and the methyl cellulose separated by filtering and treating with methanol containing hydrochloric acid. The product may also be separated by treatment with a hot solution of magnesium sulphate containing sulphuric acid or sodium bisulphate, washing with a hot solution of magnesium sulphate and then with methanol; (5) sodium cupric cellulose is treated with methyl chloride and the product separated by treatment with a solution of magnesium sulphate and sodium bisulphate; (6) sodium cupric cellulose is suspended in sodium sulphate solution and treated with methyl sulphate; (7) sodium cupric cellulose is reacted with methyl sulphate, and sodium bisulphate added.  The methyl cellulose is separated by adding magnesium sulphate solution and heating; (8) sodium cupric cellulose is etherified with ethyl chloride or bromide; (9) sodium cupric cellulose is treated with benzyl chloride, excess of which is removed by blowing in steam, and the benzyl cellulose separated by treatment with acid.  By boiling with glacial acetic acid it is converted to an acetone-soluble acetyl benzyl cellulose.
Patent GB-1165860-A (GB)
Title: Semiconductor Device with a Large Area PN-Junction
IPC: H01L29/73
Filed: 1968-08-01
Abstract: 1,165,860. Semi-conductor devices. ITT INDUSTRIES Inc. 1 Aug., 1968 [3 Aug., 1967], No. 36742/68. Heading H1K. In a semi-conductor device comprising a P- type inclusion extending from the surface of a wafer through a lightly doped N-type surface layer into a more heavily doped N-layer on a still more heavily doped N-type substrate layer the intermediate N-layer is doped with arsenic and the substrate layer with phosphorus. The device may be a planar Zener diode, a transistor or a thyristor. In the Zener diode embodiment made from silicon the intermediate and lightly doped layers are epitaxially deposited on the substrate prior to formation of the P-zone by planar masked diffusion. Alternatively the substrate and lightly doped layers are epitaxially grown on the intermediate layer. Use of arsenic in the intermediate layer reduces lateral variations in doping without introducing the snags associated with its high vapour pressure when used in surface layers.
Patent GB-906134-A (GB)
Title: Improvements in or relating to astronomical or the like cameras and optical systems therefor
IPC: G02B17/08
Filed: 1957-11-26
Abstract: 906,134. Optical systems; mirror mounts. WALAND, R. L. Nov. 21, 1958 [Nov. 26, 1957; June 18, 1958], Nos. 36807/57 and 19428/58. Class 97 (1). An optical system in or for an astronomical or the like camera comprises a meniscus lens as at 3, a substantially spherical concave primary mirror as at 4 having an aperture 5 on the optical axis of the system, and intermediate said lens and primary mirror, a substantially spherical convex secondary mirror as at 6, the arrangement being such that light rays passing through the lens to the primary mirror are reflected on to the secondary mirror and from the latter through the aperture in the primary mirror to the focal plane 8 which is to the side of the primary mirror remote from the secondary mirror and lens, and a field flattening lens as at 7 intermediate the primary mirror and focal plane. The meniscus lens is achromatic and formed of two components 3A and 3B. The mirror 6 is mounted for both fine and coarse axial adjustments. The outer faces of lens 3 and the reflecting surfaces of mirrors 4 and 6 have a commor centre of curvature lying in the plane of an annular entrance pupil formed by members 1, 2 and 22. Stop 2 and a diaphragm 10 are provided to prevent secondary imaging by the mirrors. The whole system is mounted in a tube 11 which may be hermetically sealed, filled with dessicated nitrogen and provided with a bellows breathing device 23 for equalizing internal and external pressures. Optical data is given for the example shown and for a modification (Fig. 2, not shown) in which the achromatic meniscus lens 3 is replaced by a simple monocentric meniscus lens and a zeropower hyper-chromatic corrector plate forms the entrance pupil.
Patent GB-1528838-A (GB)
Title: Alkoxy derivatives of n-substituted cyclic amines and process for their preparation
IPC: C25B3/23
Filed: 1976-09-06
Abstract: 1528838 Alkoxy derivatives of N-substituted cyclic amines HOECHST AG 6 Sept 1976 [6 Sept 1975 22 Dec 1975 29 July 1976] 36826/76 Heading C2C [Also in Division C7] Novel alkoxy derivatives of N-substituted cyclic amines having the general formula: wherein R<SP>1</SP> is hydrogen or an optionally substituted (C 1-8 ) alkyl, (C 6-10 ) aryl, (C 1-4 ) alkoxy, aralkoxy or aryloxy group; R<SP>2</SP> is (C 1-4 ) alkylene chain; X is OR<SP>3</SP> where R<SP>3</SP> is (C 1-4 ) alkyl; Y 1  is hydrogen or methyl and Y is (C 1-4 ) alkyl or (C 1-4 ) O-alkyl, or, where R<SP>1</SP> is other than (C 1-4 ) alkoxy then Y may be hydrogen, are prepared by subjecting a compound of the formula:  wherein Y<SP>1</SP> 1  is hydrogen or methyl and Y<SP>1</SP> is hydrogen or a (C 1-4 ) alkyl or (C 1-4 ) O-alkyl group, to electrolysis with an alcohol of the formula R<SP>3</SP>OH, in the presence of at least one salt selected from the alkali metal salts and the tetra-(C 1-6 )-alkyl-ammonium salts of tetrafluoroboric acid, of hexafluorophosphoric acid or of nitric acid, preferably at a temperature of up to 100 C., in an electrolysis cell containing a stationary or streaming electrolyte. The novel compounds possess herbicidal properties.
Patent GB-893598-A (GB)
Title: An improved standard of optical rotation
Inventor: YOUNG NIELS OWEN
IPC: G02F1/09
Filed: 1957-11-27
Abstract: 893,598. Optical standards of rotation. BENDIX ERICSSON U.K. Ltd. Nov. 17, 1958 [Nov. 27, 1957], No 36933/57. Class 97(1). An optical standard of rotation comprises in combination a casing such as 6 having a through light path 8 a slab of transparent material such as 1 of predetermined size and shape mounted within said casing, in said light path and being capable of exhibiting the Faraday effect and means such as permanent magnets for providing a magnetic field with the lines of force extending parallel to said light path. In modifications, the permanent magnet may be replaced by an electro-magnet and two slabs of said material may be provided, each with its own magnetic field so arranged that the optical rotations produced are additive.
Patent GB-970974-A (GB)
Title: Improvements in or relating to coin-freed vending machines
Inventor: SUTTON ERIC GRAHAM
IPC: G07F11/18
Filed: 1963-09-19
Abstract: 970, 974. Coin-freed apparatus. STOCONTROL SERVICE Ltd. Sept. 19, 1963, No. 36989/63. Heading G4V. The sliding drawer 3 of a vending machine has a recess 16 in which the bottom article of a stack rests ready for extraction and has a slot 17 into which a coin is delivered, the top of the coin lying below the rear surface 14 on which the upper articles rest when the drawer is pulled out, and the bottom of the coin projecting below the drawer to release a catch as the drawer is pulled out, a  portion 18 of the surface 14 being cut away behind the slot 17 so that a second coin resting on top of. a first coin in the slot 17 is supported on the cutaway portion 18 while the drawer is pulled out and enters the slot 17 when the drawer is pushed back. The coin delivery, shoot and catch are shown in Figs. 1 and 2 which are not reproduced here.
Patent GB-861684-A (GB)
Title: Improvements in controlling means for pyrotechnic devices
Inventor: MITCHELL JOHN ROTHWELL
IPC: F42B10/56
Filed: 1957-11-29
Abstract: 861,684. Pyrotechnic devices. G. Q. PARACHUTE CO. Ltd. Nov. 28, 1958 [Nov. 29, 1957], No. 37306/57. Class 9(2). [Also in Group XXXIII] Pyrotechnic device 13 for controlling the deployment of a parachute 10 comprises an aluminium alloy tube 14 housing an igniter assembly 30 and a cylindrical block 17 separated by a spacer 15. The block 17 has an axial bore 18 containing under powder wads 27 held in place by a plug 26, which is secured by a disc 25 and a U-shaped pin 24, the legs of which are inserted in longitudinal grooves 19 in the block. Peripheral grooves 20 intersect the grooves 19 and register with slots 22 in the tube 14, so that the pin 24 also secures loops 12 of a reefing cord 11 holding the parachute in a partially opened state. An axial bore in the spacer 15 contains a pyrotechnic charge 28, which may extend into the block 17, and fuze cord 29, e.g. granulated gunpowder, connected to the igniter 30. The igniter 30 includes a striker 33 connected by a wire 34 to a cap 35 fitted over the tube 14 and provided with a lug 39 for attachment of a wire 38. A pull on the wire 38 withdraws the cap 35 and tenses the wire 34 with consequent operation of the striker 33. The fuze cord is then ignited and after a given delay, determined by the length of fuze, ignites the charge 28. Charge 28 expels the pin 24 and thus releases the cord 11, to allow the parachute to deploy. To prevent accidental operation of the device a split pin 37 is inserted through the tube 14 into a loop of the wire 34. Two reefing cords 11 may be used, each extending half-way round the parachute canopy and a pyrotechnic device may be connected to each pair of cord ends or, one pair of ends may be anchored to the canopy and the other pair to a pyrotechnic device.
Patent GB-1213567-A (GB)
Title: Improvements in or relating to safety helmet visors
Inventor: HEFFORD CHARLES GEORGE
IPC: A42B3/22
Filed: 1968-08-05
Abstract: 1,213,567. Helmet visors. STADIUM Ltd. 28 July, 1969 [5 Aug., 1968], No. 37330/68. Heading A3V. A helmet visor comprises a curved transparent screen 1 pivotally attached by drop brackets 6 to a stainless steel head band 2, the head band being adapted to be fastened to a helmet by press-studs 3a, 3b and 3c, the outer two of which are slidable in slots 4, and the width of the head band between the slots being reduced to provide greater flexibility than elsewhere to enable the head band to conform to the contours of the helmet.
Patent GB-1315171-A (GB)
Title: Read only store
IPC: F22B21/06
Filed: 1970-08-03
Abstract: 1315171 Read - only stores INTERNATIONAL BUSINESS MACHINES CORP 3 Aug 1970 [15 Sept 1969] 37352/70 Heading G4A [Also in Divisions H1 and H3] In a "write once read only" semi-conductor memory store the writing process involves the addressing of a selected cell (not shown) at cross-over points of word and bit lines, and the application of a current of 100 mA to a terminal I C . The current has the effect of alloying a floating metal band in the addressed cell with the underlying semi-conductor material, and thereby irreversibly shorting out a normally resistive part of the cell (see Division H1). Subsequent read-out is achieved by addressing a selected cell and applying a low negative potential to terminal - V B , the signal sensed by amplifier 87 indicating whether the addressed cell has had its overall resistance reduced by the shorting out of the normally resistive part. The normally resistive part of the cell which is shorted by the writing process may be a reverse-biased PN-junction or a resistive diffused region. In both cases the cell also includes a foreward-biased PN-junction in series with the shorted part.