baber/WOPTO huggingface dataset:
Patent GB-502429-A (GB)
Title: Improvements in or relating to soles for boots and shoes
IPC: A43B13/22
Filed: 1937-10-30
Abstract: 502,429. Soles for footwear. CLARKE, W. G. Oct. 30, 1937, No. 29710. [Class 17 (ii)] The abutting edge between a shoe sole A of leather and a toe piece B of waterproofed chrome leather is curved, both edges being cut by the same curved guillotine knife, the rabbetted joint being strengthened, if desired, by sewing or nailing A<3>. A backing piece of sole leather may be secured by an adhesion process to the sole and toe piece. The invention is more particularly for children's veldtschoen.
Patent GB-928418-A (GB)
Title: Preparation of steroid compounds
IPC: C07J5/00
Filed: 1959-09-01
Abstract: The invention comprises a process for the preparation of 20-enol acylates of the pregnane and allopregnane series by contacting 20-keto steroid metallic enolates of the pregnane and allopregnane series with an acylating agent, the metallic enolates being the conjugate addition products obtained by reacting D 16-20-keto-steroids of the pregnane and allopregnane series with C1-5 alkyl magnesium halides, di(C1-5 alkyl) cadmium compounds, and di(C1-5 alkyl) zinc compounds.  The acylating agent may be a C1-6 alkanoyl acylating agent such as acetyl chloride or acetic anhydride. The D 16-20-keto-steroids of the pregnane and allopregnane series may contain 2-alkyl, 3-acyloxy, 6-alkyl, 11-keto or hydroxy, 5,6-dihalo, or 21-acyloxy substituents, and may contain an additional 9(11)-double bond.  16a -Methyl-9a -fluoro-prednisolone is prepared by treating 16a -methyl-3a ,20-diacetoxy-9(11),17(20)-pregnadiene with perbenzoic acid to form the corresponding 17,20-oxido compound, hydrolysing the oxido compound with methanolic sodium hydroxide to form 16a -methyl-3a ,17a -dihydroxy- 20-keto-9(11)-pregnene, reacting this compound with hypobromous acid and acetylating at the 3-position to form 16a -methyl- 3a -acetoxy- 9a -bromo-11b , 17a -dihydroxy-20-keto-pregnane, treating this compound with potassium acetate in ethanol to form the corresponding 9,11-oxido compound, treating the oxido compound with hydrogen fluoride to form 16a -methyl-3a -acetoxy-9a -fluoro-20-keto- 11b , 17a -dihydroxy-pregnane, 21-hydroxylating this compound with the acid of micro-organisms to form the corresponding 21-hydroxy compound, oxidising the resulting compound with a growing culture of Nocardia blackwellii to form 16a -methyl-9a -fluoro-3,20-diketo-11b ,17a -dihydroxy-pregnane, and then introducing double bonds into the 1- and 4-positions of the pregnane compound.  Specifications 877,085 and 928,417 are referred to.
Patent GB-331775-A (GB)
Title: Improvements in or relating to apparatus for stretching footwear
IPC: A43D3/08
Filed: 1929-10-02
Abstract: 331,775. Pimazzoni, O. Oct. 2, 1929. Trees and stretchers.-In apparatus for stretching footwear widthwise, of the kind comprising half-last members 12 mounted on parallel spindles 9 which may be rotated, the members 12 are carried on the bent ends of the spindles, the square ends 8 of which engage in and are turned by a lazy-tongs arrangement, the links 6, 7 of which are turned by a screw 4 actuated by a handle 5 and turning in a screw boss 3 supported on a pedestal 1. An arm 13, supported more or less vertically and adjustable in a bearing 14 and with a knob at its lower end against which the toe of the shoe rests, is also provided.
Patent GB-504935-A (GB)
Title: An improved method of photographically recording vehicle speeds and apparatus therefor
IPC: G08G1/054
Filed: 1937-11-02
Abstract: 504,935. Photographic cameras. CARSWELL, J. I. Nov. 2, 1937, No. 29899. [Class 98 (i)] A Composite photograph of a moving vehicle is produced by taking a plurality of photographs of the vehicle on part of a film at short intervals oftime from a travelling camera which simultaneously produces on another part of the film an image of a speed indicator incorporated in the camera and arranged to record the speed of travel of the camera. The film is fed from a cassette 19 to a chamber 24, and on pulling the trigger 21 in the direction of the arrow, an exposure is made through the objective 16, and simultaneously lamps 12 illuminate the dial 8 of the speed recording instrument 7, a mirror 28 and lens 29 producing an image of the dial on the film. On releasing the trigger, the film is fed. A ring 10 permits removal of the instrument 7, which may also incorporate a clock photographed with the dial 8, and a data sheet 30 may also be photographed. A pointer 33, Fig. 4, projects into the field of the view-finder 18, and is actuated by clockwork mechanism to indicate the time between exposures.
Patent GB-1003848-A (GB)
Title: Improvements in and relating to the protection of metallic surfaces
Inventor: BENHAM REGINALD ROBERT
IPC: C25D5/10
Filed: 1963-07-29
Abstract: Oxidizable metal surfaces, e.g. Cu or Ag or alloys thereof, are plated first with platinum, and then with rhodium, the undercoat depressing the porosity of the top rhodium coat.  The platinum bath preferably contains dinitrito-sulphato-platinous acid, and the rhodium bath rhodium sulphate.  Specification 897,690 is referred to.
Patent GB-1136305-A (GB)
Title: Machine tool cutters
Inventor: WALE DENNIS HARRY
IPC: B23C5/10
Filed: 1966-07-04
Abstract: 1,136,305. Milling cutters. MARWIN (ANSTEY) Ltd. 3 July, 1967 [4 July, 1966], No. 30022/66. Heading B3K. A milling cutter has cutting inserts e.g. 12, 13, 14 forming the faces of flute portions of the cutter and an end cutting insert 16 which is offset from the axis of the cutter so that the points where the inserts 12, 13, 14 meet the end insert lie at different radii. The cutter may be of alloy steel and the inserts of tungsten carbide, high speed steel or ceramic material and may be secured by brazing or adhesively or clamped by means of screws or by shrinkage. The end insert may be of cylindrical, triangular, square, or polygonal section.
Patent GB-257461-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H23/16
Filed: 1925-11-30
Abstract: 257,461. British Brass Fittings, Ltd., and Sperryn, G. N. Nov. 30, 1925. Switches, quick-action. - Means for initiating positively the break movement of a quick-make and quick-break tumbler switch of the deadcentre compression spring type comprise a cam formation b on the inner end of the tumbler lever a which engages a roller h on the extremity of the contact-member c remote from the contact e. One end of the telescopic member p is trunnioned in the inner end of the tumbler lever which is slotted for the purpose and the roller is cut away at the centre to permit the full movement of the telescopic member. The contact-member is pivoted on set screws x passing through the bridge and the screws are prevented from working loose by extensions w of the screws v which secure the bridge to the base.
Patent GB-504405-A (GB)
Title: Improvements relating to welded construction
IPC: E04C3/04
Filed: 1937-11-03
Abstract: 504,405. Welding structural elements. WEAKLEY, F. J. Nov. 3, 1937, No. 30173. [Classes 83 (ii) and 83 (iv)] In making built-up structural elements, such as girders, beams or spars, of channel or box-section form, a part of not readily weldable material to,form a web or wall is provided with a series of perforations, through which excrescences on a pair of weldable strips applied to the two sides thereof are passed and welded together so as to form or reinforce one or more flanges of the element. The weldable metal may be .steel and the not readily weldable material may be an aluminium alloy or a non-metallic material. A girder may consist of an aluminium alloy web 10, and steel angles 11 provided with projections 14 welded together through perforations in the web. Rivets may be used in some of the holes for assembling purposes. In Fig. 3 a box section consists of two channel and two flat aluminium plates 15, 16 joined together by steel strips 17, 18 provided with projections welded together through perforations in the plates. The steel strips 17 may be turned over to cover up the open edges of the plates or the strips 17, 18 may be replaced by U-shaped strips. In Fig. 4, the strips 21, 22 are provided with projections which pass through perforations in a pair of flanged aluminium angle sections 19 and are welded to an intermediate steel web 20. In Fig. 5, a reinforcing steel member 24 provided with flanges 25, 26 has projections welded to each other through perforations in a U-section aluminium member 23. In Fig. 6 a flanged U-section 27 of aluminium alloy is united to a steel channel 28 and a transverse web 29 of weldable or non-weldable material by welding projections on the flange 31 of the section 28 to projections on steel strips 30 through holes in the section 27. A perforated non-metallic sheet may be secured to a skeleton structure by a strip of steel provided with projections welded to the structure through holes in the Sheet. An anticorrosive paint may be applied to the parts prior to assembly or an aluminium alloy may be anodized after forming the perforations.
Patent GB-728775-A (GB)
Title: Measuring apparatus of intra-cerebral blood pressure
IPC: A61B5/00
Filed: 1952-11-28
Abstract: 728,775. Sphygmometers. UEMURA, M., and OGINO, Y. Nov. 28, 1952 [Nov. 30, 1951], No. 30271/52. Class 81 (2). Apparatus for measuring intracerebral blood pressure comprises means for applying pressure to the eyeball, means for measuring said pressure and for measuring electrically the pulsation of the cornea caused by the pulsation of the central retinal artery resulting from the applied pressure. In one embodiment of the invention, Fig. 1, pressure is applied to the eyeball 1 by a cylinder 3 in contact with a balloon 8, the internal pressure of which may be measured by a gauge 11. A plunger 4 in contact with the cornea 2 is located within the cylinder 3 and has a magnetic portion 5 adjacent which are two inductance coils 6, 7, forming part of a bridge completed by an adjustable resistance 13 and a 1,000 cycle oscillator 12. As the pressure applied to the eyeball is increased by raising the pressure within the balloon 8, pulsations of the cornea resulting from pulsations of the central retinal artery are increased so that the plunger 4 vibrates to produce unbalance between the inductances 6, 7 owing to the movement of magnetic portion 5. The unbalance voltage thus produced in the bridge is passed through an amplifier 14 and an amplitude indicator 15 which may be self-recording. The pressure of the balloon 8 for maximum pulsation of the cornea and for zero pulsation of the cornea caused by applying sufficient pressure to stop the blood flow give a measure of the maximum and minimum blood pressure. If the output of the amplifier 14 is rectified the direct current component gives a measure of the applied pressure and the ripple component measures the pulsation. In another embodiment of the invention, Fig. 2, a cylinder 26 having a magnetic portion 21 is pressed against the eyeball. Pulsations of the cornea are transmitted by the air in the interior 29 of the cylinder to a diaphragm 16 made of the substance known under the Registered Trade Mark "Duralumin" which is connected with a pieso crystal 17, the voltage produced by the crystal serving as an indication of the pulsation of the cornea. In applying pressure to the eyeball the cylinder 26 is moved against a spring 18 so that the magnetic portion 21 moves relative to inductance coils 20, the resultant change in inductance of which gives a measure of the pressure applied.
Patent GB-771954-A (GB)
Title: Improvements in gas filters
IPC: B01D39/16
Filed: 1955-10-24
Abstract: A gas filter element comprises a mat of tangled randomly disposed irregularly kinked polyethylene filaments of varying diameter fused together at occasional points and is formed by ejecting molten polyethylene through electrically heated rotating orifices when the filaments so formed coalesce at said occasional points.  Any polyethylene of molecular weight between 10,000 and 15,000 may be used.  U.S.A. Specification 1,489,342 is referred to.
Patent GB-629747-A (GB)
Title: Accessory for use on the hand steering wheels of vehicles
IPC: B62D1/04
Filed: 1947-11-14
Abstract: 629,747. Handle fixings. CHINCHILLA, C. C. Nov. 14, 1947, No. 30354. Convention date, Dec. 17, 1946. [Class 61(i)] [Also in Group XXIV] A revoluble knob G is mounted on the steering wheel of a vehicle by means of a clip A held by a bolt C and butterfly nut E.
Patent GB-1493731-A (GB)
Title: Rectifier and rectifying method
IPC: H01G9/022
Filed: 1975-07-21
Abstract: 1493731 Electrolytic rectifiers MITSUBISHI RAYON CO Ltd 21 July 1975 [24 July 1974 11 Sept 1974 22 Nov 1974] 30438/75 Heading H1M An electrolytic or electrophoretic rectifier comprises a polyelectrolyte in aqueous solution or suspension and two electrodes immersed therein, the immersed surface area of one being 1À5 to 300 times the immersed surface area of the other. For rectification the polyelectrolyte must be suitably pure, and is substantially freed from monomers, low molecular weight polymers and polymerization catalysts by ion exchange processes. The polyelectrolyte may be acid, e.g. a polycarboxylic acid, or basic, e.g. a polyamino compound, and many examples are listed. It may be 30 to 500% neutralized and in the case of an acid should have an acid value in the range 5 to 800. The electrolyte preferably has a dissociation constant pK of 8 or more in the case of an acid or 6 or more in the case of a base, measured to take into account a spreading factor as defined in the Specification. The electrodes may be (a) for an acid electrolyte stainless steel, Ni, alloys thereof, Cu, Al, Ti, Nb, W, Zr, Ag, Au or C, or (b) for a basic electrolyte Al, Ti, Nb, Ta, W, Zr or alloys thereof, optionally electrolytically oxidized. Four such rectifiers may be incorporated in a circuit as illustrated, each comprising an, e.g. aluminium rod 3 as electrode of low immersed area and aluminium plate 4 as the other electrode, the electrodes being at least 1 mm. apart.
Patent GB-710899-A (GB)
Title: Improvements in or relating to polymerization process
IPC: C08F22/14
Filed: 1951-12-31
Abstract: Esters of ethylenically unsaturated polycarboxylic acids are copolymerized with low molecular weight copolymerizable monomeric materials by heating in the presence of a peroxide catalyst and an inert diluent, preferably a hydrocarbon oil, the temperature being maintained by injecting oxygen or a gas mixture containing molecular oxygen, such as air, into the reaction mixture.  The polycarboxylic acid esters may be derived from maleic, fumaric, citraconic, mesaconic, itaconic or aconitic acids which are preferably esterified with the alcohols obtained by the hydrogenation of coconut oil and having an average chain length of 13.5 carbon atoms.  The copolymerizable monomeric material may be vinyl acetate, vinyl butyrate, isopropenyl acetate, alphachlorovinyl acetate, styrene, alphamethyl styrene, acrylonitrile or methacrylonitrile.  The catalyst may be hydrogen peroxide, benzoyl peroxide, cumene hydroperoxide, potassium persulphate, lauroyl peroxide, ammonium persulphate, urea hydroperoxide, tertiary-butyl hydroperoxide or tertiary-butyl perbenzoate.  The copolymers may be used as lubricating oil additives.ALSO:Mineral lubricating oil compositions contain from 0.001 per cent. to 10 per cent. of a copolymer of an ester of an ethylenically unsaturated polycarboxylic acid with a low molecular weight copolymerizable monomeric material (see Group IV (a)) which acts both as pour depressant and viscosity index improver. The composition may contain other materials such as extreme pressure agents, oxidation inhibitors, other pour depressants, other viscosity index improvers, oiliness agents and corrosion inhibitors.  The use of the copolymer of a maleate ester of the alcohols obtained upon the hydrogenation of coconut oil with vinyl acetate is exemplified.
Patent GB-193135-A (GB)
Title: Improvements in or relating to bodies of motor road vehicles
IPC: B60J1/08
Filed: 1921-11-16
Abstract: 193,135. Birmingham Small Arms Co., Ltd., and Speck, T. R. Nov. 16, 1921. Windscreens.-A window for a motor vehicle having a body of the convertible open-to-closed type comprises a frame 1 hunged by bent arms to lugs 4 beneath the top rail of the door frame and adapted to fold down into the door cavity beneath a hinged cover 9. In the raised position, the arms 3 are clamped by the top of the cover 9 which is secured by bolts 10. Side frames 11 are hinged to the frame 1 which are folded over it before hanging into the door cavity and are locked in extended position by sliding bolts 12. Canvas flaps may replace the side frames 11 and may be suitably secured to the hood and body and have a depending flap weighted or otherwise caused to lie over the outer edge of the door. The window may have trunnions sliding in guides on the door and the door cavity may be covered by a. hinged flap. The frames may be tubular and have strips 2 secured bv brazing &c. for the attachment of canvas or transparent material. The frames may all be fitted with glass.
Patent GB-163640-A (GB)
Title: Improvements in steam-heated radiators
IPC: F24H3/00
Filed: 1920-05-01
Abstract: 163,640. Codd, T. J., and Johnson, H. May 1, 1920. Radiators. - In a steam-heated radiator ct the kind in which water in the elements is heated by steam in a pipe a passing through the bottom of the elements, a pipe b, connected to the outlet end of the steam pipe conducts steam into the top of the elements. A cock b<2> controls the passage of steam through the pipe b<1>. A pipe b<1> opening into the radiator at the normal waterlevel therein leads off the water of condensation to the outlet pipe c. A non-return valve b<5> is fitted in the pipe b<4>. A thermostatic steam trap allowing the water to pass to a main under partial vacuum may be connected to the outlet box b, as described in Specification 158,009.
Patent GB-978243-A (GB)
Title: Vulcanisation process employing methylenebis (aliphatic-oxyanilines) as accelerators
Inventor: DIBBO ALAN
IPC: C08K5/00
Filed: 1962-08-09
Abstract: The invention comprises a 3,31-methylenebis (4-aliphatic-oxyaniline) in which each aliphaticoxy group contains 3 or more carbon atoms, and a process for its preparation by condensing the appropriate aliphatic-oxy aniline with formaldehyde (or a formaldehyde precursor) in presence of an acid catalyst. The preparation of 3,31-methylene bis (4-n-heptyloxyaniline) by this method is exemplified.  Other methods mentioned are reduction of the product of condensing an aliphatic-oxy nitrobenzene with formaldehyde or with an aliphatic-oxy nitrobenzyl chloride. A number of specific compounds within the scope of the invention are listed.ALSO:A vulcanisable rubber composition is characterised by the presence of sulphur or a sulphur-containing vulcanising agent, and a methylene bis (aliphatic-oxyaniline), e.g. 3,31-methylenebis (2-, 4- or 6-ethoxyaniline); 3,31-methylenebis (4-methoxyaniline); or 3131-methylenebis (4-n-heptyloxyaniline). The preferred sulphur-containing agent is a benzthiazylsulphonamide e.g. N-cyclohexyl -2- benzthiazylsulphonamide. Examples describe the vulcanisation of natural rubber, styrene-butadiene and cis-1, 4-polyisoprene.
Patent GB-297594-A (GB)
Title: Improvements in and relating to electrical conductors
IPC: H01B5/08
Filed: 1927-11-15
Abstract: 297,594. Anstey, H. C., and Bolton, T. Nov. 15, 1927. Conductive materials; cores for cables.-The core 1 of a cable is formed of seamed hollow tubes, preferably of a high tensile. copper alloy, stranded to form a cable or a core for a composite cable. Solid high-conductivity wires 2 may be stranded over the core 1, and solid high-tensile wires 3 are preferably interwoven with the wires 2. Phosphor or aluminium bronze may be used as a high-tensile alloy, and copper or cadmium copper as a highconductivity material.
Patent GB-651237-A (GB)
Title: Turbine construction for a turbo-jet engine
IPC: F02C3/08
Filed: 1948-11-26
Abstract: 651,237. Jet propulsion plant. PACKARD MOTOR CAR CO. Nov. 26, 1948, No. 30704. Convention date, Dec. 17, 1947. [Class 110(iii)] In a gas turbine jet-propulsion plant, the nozzle structure comprises hollow guide blades 41 carried by inner and outer rings 40, 44. The ring 44 is secured to the outer casing 22. The ring 40 is secured to an annular part 37. The structure is centred and supported by eight radial pins 50, passing through some of the hollow guide blades, which enter holes in spaced lugs 51 on a coned part 34 of the inner frame. The ring 40 is continued by a ring 54 which closely surrounds the tips of the running blades-53. The ring 54 is carried by a number of radial pins 56 passing through the outer casing and a stiffening ring 47. The ring 54 is grooved to provide annular fins opposite the blade tips. The hollow shaft 24 is open at its up-stream end. It receives air under ram-pressure and conducts the air to radial-passages 27 in the rotor which lead to the hollow of the turbine blades. The annular combustion chamber is of a diameter smaller than the delivery of the centrifugal compressor and is connected thereto by an inturned annular duct.
Patent GB-1041047-A (GB)
Title: Improvements relating to belt conveyors
Inventor: WILD FRANK
IPC: B65G15/60
Filed: 1962-08-10
Abstract: 1,041,047. Endless conveyers. SIMON HANDLING ENGINEERS Ltd. Aug. 12, 1963 [Aug, 10, 1962], No. 30717/62. Heading B8A. An endless belt conveyer comprises a belt 12 mounted on drive and idler pulleys and having its upper run passing over the perforated upper surface 10 of an air box 8, the belt being supported by the air pressure issuing therefrom. The perforated surface 10 is shaped to conform to the curvature of the moving loaded belt and is mounted over an impervious trough 9 which is divided into sections by plates 13, each section being fed with compressed air from a pipe 14 and branches 15. Pressure gauges may be provided at each air box section, whereby readings of the load being carried may be obtained. The lower run of the belt is supported by rollers mounted on the air box supporting frames 7.
Patent GB-1322424-A (GB)
Title: Circuit for driving a pulse motor
IPC: H02P8/10
Filed: 1971-07-01
Abstract: 1322424 Control of stepping motors FUJITSU Ltd 1 July 1971 [6 July 1970] 30812/71 Heading H2J [Also in Division H3] In a circuit for driving a stepping motor, each winding EPM is energized in turn from a high voltage V 1  under the control of an input squarer wave e 0 , and when the current I in the winding reaches a preset value, the supply is changed to a low value V 2 , both voltages being cut off upon the input waveform reversing. The inverted wave e 1  sets the bi-stable F, the output e 1 <SP>1</SP> switching on transistor Q 1 , the input e 0  being effective to switch Q 2  on directly so that winding EPM is energized from supply V 1 . The current I rises exponentially, and when the potential across resistor r rises sufficiently, Zener ZD conducts to trigger monostable MM, which, upon reverting, resets F by its trailing edge e 2  to terminate wave e 1 <SP>1</SP> thereby switching off transistor Q 1 . Current I is maintained at a lower value from supply V 2  through diode D 1  until transistor Q 2  is switched off by waveform e 0  reversing. The Zener may be replaced by a RC circuit (Fig. 3B, not shown). The circuit is described as applied to a five phase motor, five control square waves being derived from a clock pulse train, each wave being phase shifted by one pulse from the adjacent wave, (Figs. 2A and SB, not shown).