baber/WOPTO huggingface dataset:
Patent GB-382414-A (GB)
Title: Improvements in or relating to number plates
IPC: B60R13/10
Filed: 1931-10-19
Abstract: 382,414. Number plates. PERRITE, Ltd. and JONES, R. H., Weld bank Rubber Mills, Chorley, Lancashire. Oct. 19, 1931, No. 28936. [Class 3 (ii).] A vehicle identification plate is made of rubber, composition, or like material and has supporting strips, as shown at 10, Fig. 2, for a motor cycle front plate or at 15, Fig. 4, for a motor-cycle rear plate, embedded during manufacture in the body of the plate. Holes 11, 22 in the strips 10, 15 assist in anchoring the plates. A metal lamp-holding ring 24 may be similarly anchored in the rear plate, and may be electrically connected to the strip 15 by an embedded wire &c. 27. The letters and numerals may comprise thin sheet celluloid or fabric secured to the plate by adhesive, or sheet rubber vulcanized during or after manufacture to the plate, or metal or rubber of substantial thickness mounted in recesses in the plate, and secured by vulcanizing or by adhesive, or moulded in position. The rim of the plate is thickened, and the plate and letters may be covered with cellulose or other varnish.
Patent GB-210156-A (GB)
Title: Improvements in and connected with the production of metal tubing and of tubular metal articles or instruments
IPC: B21C1/22
Filed: 1922-10-25
Abstract: 210,156. Everett, S. J. Oct. 25, 1922. Drawings to Specification. Tubes; cased forms; surgical and medical appliances. - In making metal tubes or tubular metal articles or instruments of small diameter such as hypodermic syringe needles, a tubular billet of hard or tough metal, such as steel, " nichome," &c., is rolled, swaged, or drawn on a mandrel or core composed of a metal or alloy capable of extreme elongation and retention of tensile strength such as brass, nickel-silver, &c., and is then separated therefrom by first severing or breaking a tube length without cutting or breaking the core and then pulling it off the core. In making stainless steel tubes or hypodermic syringe needles a tube of silver, nickel-silver, or other incorrodible metal is inserted between the core and a stainless steel billet, so that the interior of the needle or tube, which cannot be polished, is maintained rustless. The core is eoated with graphite or the like, and the liner passed thereon. The exterior of the liner is coated with borax or like flux and may also be coated with solder and is then inserted into the billet and the composite object rolled, swaged, or drawn. The tube is heated to anneal the core and weld or solder the liner to the interior of the tube. A length of tubing and core equal to two needle lengths may then be cut off, the tubing severed in the middle without breaking the core, and the two needle lengths pulled apart. Alternatively, the main length may be fixed and a desired length broken and pulled off.
Patent GB-391194-A (GB)
Title: Improvements relating to moulds for the production of metal ingots and castings
IPC: B22D7/00
Filed: 1931-10-21
Abstract: 391,194. Casting processes. BAILEY, R. W., 20, Grange Avenue, Hale, Cheshire, ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House. Aldwych, London, and ENGLISH STEEL CORPORATION, Ltd., Vickers Works, Sheffield. Oct. 21, 1931, No. 29262. [Class 83 (i).] Moulds; casting-machines.-A valve for admitting metal of low melting-point into the gap formed between a cast ingot and its mould, as described in Specification 360,980 or for admitting other fusible materials or gas, has a head 10 so formed that it is positively engaged by the cast metal and is pulled from its seat as the metal contracts. The head may be held in position against the end of the supply tube 3 by a spring or wire or by a fusible plug 21, Fig. 7, for instance of the same metal as that to be introduced into the mould, which is a friction fit or screwed into the tube 3. Heat insulation 23 may be inserted between the head 10 and plug 21. In a modification the head has a thin flange 11, Fig. 3, which resiliently engages the tube. In another modification the head is cemented, soldered or brazed at 13, Fig. 2, to a sleeve 11 screwed into the tube 3 or to a bolt or stem 25, Fig. 8, attached to the tube 3. Small holes 19, which will pass the gas or the metal of low melting point, but not the metal being cast, may be provided. The sleeve 11, Fig. 2, may have notches 14, to assist in screwing it out after the casting has been removed and deeper notches to allow it to be broken if it cannot be unscrewed. In another modification a hole 34, Fig. 9, at the base of a mould is closed by an angled strip 29 provided with recesses 30 to be engaged by the cast metal and secured to the mould by shellac-varnish or other cement. Electricity, heating by.-The tube 3, Fig. 2, mav be connected at 6 to an outer tube 4 separated by insulation 5 so that it may be kept hot by the passage of an electric current.
Patent GB-495508-A (GB)
Title: Improvements in or relating to ice forming trays
IPC: F25C1/246
Filed: 1937-10-27
Abstract: 495,508. Ice-making. ELECTROLUX, Ltd. Oct. 27, 1937, No. 29342. Convention date, Nov. 10, 1936. [Class 29] A removable grid for domestic ice-making trays 10 comprises two separate longitudinal strips 11, 12, each carrying transverse ribs or partitions 15, 16 and pivoted on a common pivot 17 near one end so that one strip with attached ice prisms may be moved relatively to the other strip in releasing the grid from the tray. The rear edge 18 of each longitudinal strip is strengthened and the rear wall of the tray is reinforced where the strip engages it in the lifting movement. The pivot 17 is arranged so that the corner 20 of one strip engages the bottom of the tray in the lifting movement and thereby prizes up the other strip and attached cubes. Known releasing means such as levers or cams may be employed for raising the front ends of the grid, or such may be dispensed with since a small force only is required to release one half separately by means of a handle part 13. In a modification, the grid is formed by narrow longitudinal strips on which are threaded U-shaped transverse members, with one long and one short limb. Apertures or prongs may be formed in the longer limbs to anchor the ice cubes to one another or to the grid to prevent unintentional separation of the cubes individually. After the grid with attached cubes is removed from the tray, the two halves may be turned into alignment, when by careful flexure any desired number of cubes may be detached and the grid then replaced in the tray.
Patent GB-474550-A (GB)
Title: Therapeutic apparatus for stimulating the growth of hair on the scalp
IPC: A61H7/00
Filed: 1936-10-28
Abstract: Apparatus for treatment of the scalp comprises a helmet or cap to fit on the head forming a gas-tight seal therewith, and means for producing automatically within the helmet alternating cycles of positive and negative pressure at timed intervals a plurality of times, for example three, a minute, the low pressure periods exceeding in duration the high pressure periods, and the automatic control being such that the maximum reduction of pressure below atmospheric does not exceed 100 mm. of mercury, and the maximum increase of pressure above atmospheric does not exceed 40 mm. of mercury.  The maximum reduction of pressure below atmospheric is greater than 40 mm., and the maximum increase above atmospheric is greater than 5 mm.  The duration of the negative pressure periods is preferably twice that of the positive pressure periods. Individual helmets may be used for the heads of various patients, or a standard helmet having an inflatable pneumatic edge portion may be employed. The helmet is connected to a pressure inducing device which comprises a motor which is controlled to predetermined intervals, or in which the pressure is built up to a predetermined value, when by a valvular control, negative pressure is automatically induced until the predetermined value is reached, whereupon the cycle is automatically reversed.  Apparatus may also be used having an automatic control operative at predetermined intervals so that there may be an interval of normal pressure between the negative and positive pressure periods. Specification 454,912 is referred to.  The Specification as open to inspection under Sect. 91 comprises also undescribed drawings of what appear to be a helmet and a device for producing the pressure cycles.  This subject-matter does not appear in the Specification as accepted.
Patent GB-768353-A (GB)
Title: Improvements relating to thermostatically-operated temperature detectors
Inventor: PARSONS HARDY KELVIN
IPC: G01K9/00
Filed: 1953-10-23
Abstract: 768,353. Automatic fire alarms. GENT & CO., Ltd. Oct. 11, 1954 [Oct. 23, 1953], No. 29404/53. Class 118 (1). [Also in Group XXXVII] In a thermostatically -operated device suitable for use as a fire alarm, a bimetallic element 6 attached at 7 to a visual indicating member 2 which is pivoted on a pin 3 carries a peg 9 which, on the bending of the element 6, engages a trigger 10 thereby releasing a hook 12 from an adjustable catch plate 13 whereupon the member 2 drops under the action of gravity pivoting about 3 to its other position from which it must be positively reset. In the embodiment shown, the member 2 carries a mercury switch which is operated on the tilting of the member 2 to complete an electrical warning circuit. In a modification (Fig. 3, not shown), the block 7 carries a lug which engages a finger to release the spring of a spring-actuated bell, thus providing a mechanical warning system.
Patent GB-890449-A (GB)
Title: Improvements in or relating to semi-conductor rectifiers
Inventor: LANGRIDGE ARTHUR
IPC: H01L23/36
Filed: 1959-08-28
Abstract: 890,449. Semi-conductor rectifiers. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Aug. 26, 1960 [Aug. 28, 1959], No. 29410/59. Class 37. A semi-conductor rectifier comprises a rectifying element 3, Fig. 2b, mounted on a base electrode 1, the outer surface of which is in the form of a truncated cone, a seal 8 for the rectifying element formed by a resinous sealing compound, and a cooling attachment 6 having an aperture 7 of frusto-conical form corresponding to the outer surface of the base electrode, the base electrode being fixed in the aperture by pressing or other suitable means. As shown, the rectifying element 3, which comprises a wafer of monocrystalline silicon, is mounted on electrode 1, which is made of copper, by way of a tungsten disc 2, and is surmounted by a molybdenum disc 4 to which is connected a second copper electrode 5. Cooling attachment 6 comprises a rectangular metal plate in which aperture 7 is stamped at an eccentric point along a diagonal. In a modification, Fig. 3, the cooling attachment 9 comprises a thick plate, having a central frusto-conical aperture within its thickness, which is screwed to a heatsink 11 which may be water- or air-cooled. A plurality of rectifiers may be mounted on a single heat sink. The direction of taper of the frusto-conical surfaces of base electrode and aperture may be the opposite of that shown, and the frusto-conical surface of the base electrode may extend over part only of one dimension. The cooling attachment may be cylindrical. The rectifying element may comprise germanium.
Patent GB-911460-A (GB)
Title: A new or improved thread rolling die
Inventor: HANCOX HAROLD
IPC: B21H3/06
Filed: 1959-08-28
Abstract: 911,460. Rolling screw-threads. NEWTON & CO. Ltd., L. H. July 25, 1960 [Aug. 28, 1959], No.29415/59. Class 83 (4). A thread-rolling die is relieved along at least one of the marginal edge portions of its ribbed surface so that the ribs 13 adjacent said edge progressively decrease in height towards the edge. The crests of the relieved ribs 13 are rounded. The die may be a platen or roll.
Patent GB-504728-A (GB)
Title: Improvements in or relating to carpet sweepers
IPC: A47L11/33
Filed: 1937-10-28
Abstract: 504,728. Carpet-sweepers. ENTWISLE & KENYON, Ltd., and KENYON, R. W. Oct. 28, 1937, No. 29435. [Class 138 (i)] Relates to carpet-sweepers of the kind in which the dust pans B are removed, for emptying, by sliding them horizontally through openings in the sides of the sweeper casing A, and consists in providing each pan with a curved inner wall b<2>. This wall may be concentric with the brush D, Fig. 11, or may have its lower end spaced farther from the brush than its upper end so as, in the latter case, to provide a tapered passage for the sweepings, Fig. 2. The pans are retained on rails or bars A<1> in the bottom of the casing A by spring catches C or by other means. Both ends of the pan may be closed by end pieces b<3>, Fig. 4; or one or both ends may be open to facilitate emptying. For sweepers having a track wheel axle extending from end to end of the casing, the curved wall b<2> is formed with a re-entrant b<6>, Fig. 4, to receive the axle. The outer wall b of the pan is fitted with a furniture guard G which is in alignment with the guards on the ends of the casing A and which may be shaped to serve as a handle.
Patent GB-520148-A (GB)
Title: Improvements in tube rolling mills
IPC: B21B21/00
Filed: 1938-10-12
Abstract: 520,148. Feeds for rolling-mandrel carriages. FARMER, NORTON. & CO., Ltd., Sir J., and NORTON, W. J. Oct. 12, 1938, No. 29518. [Class 83 (iv)] In rolling tubes in mills in which the mandrels are fed by cranks and connecting rods driven by gearing from the rolls the rods being connected to compressed air cylinders a having pistons b with rods f connected to the mandrel feeding means, the cylinder ends are connected at i and j by a valve k the connection j being continually open to compressed air supply. An adjustable escape valve h is provided and the valve k is controlled by a cam m driven in synchronism with the rolls so that during the rolling stroke there is free connection between the ends of the cylinder and the tube moves under control of the rolls. On the return stroke the valve is closed and the air pressure in j returns the piston to the position shown so that the rolling stroke always commences at a definite point. Specification 449,323 is referred to.
Patent GB-1135361-A (GB)
Title: Dispersion-hardened nickel-chromium foil
IPC: C22C19/00
Filed: 1967-06-27
Abstract: 1,135,361. Alloys; powder metallurgy. FANSTEEL METALLURGICAL CORP. June 27, 1967 [June 30, 1966], No. 29616/67. Headings C7A and C7D. Dispersion-hardened Ni/10-30% Cr foil has dispersed therein 0À1-6% by volume of particles of a refractory metal oxide having a free energy of formation at 1, 000 C. of more than 100 kilocalories per gram atom of oxygen and an average particle size less than 80 mÁ, the foil being less than 0À01 inch thick and having both (a) elongated grains with a length-to-thickness ratio of more than 2 and a grain thickness of 10-200 Á, and (b) equiaxed grains with an average thickness of 10-80Á and having annealing twins. As described, powder is prepared by co-precipitating Ni and Cr oxides together with colloidal ThO 2 , and the Ni and Cr oxides are then reduced to the metals. The resulting powder is compacted, sintered (in hydrogen), forged or extruded to plate, rolled to sheet at a temperature below the recrystallization temperature, and finally converted to foil by alternately annealing at 1800 - 2400 F. and cold-rolling.
Patent GB-837532-A (GB)
Title: Improvements in or relating to hydraulic apparatus
IPC: F15B20/00
Filed: 1958-09-16
Abstract: 837,532. Leak detection apparatus. TORRA, M. P. Sept. 16, 1958 [Nov. 5, 1957], No. 29656/58. Class 99(2). [Also in Group XXXIV] An apparatus for detecting hydraulic leaks comprises a casing 1, Fig. 1, having an inlet 2 and two outlet members 7 which have seatings 10 engaged by the interconnected valves 4, 5, and which are normally held open by the opposed springs 6 wherein unbalanced fluid flow cause a valve to close and contact a terminal 10 thus completing an electrical indicating circuit. The axial positions of the terminals 10 may be adjusted by screwing the terminals 9 through the insulating blocks mounted in the outlets 7. Another embodiment has the terminal screws 9 transversely mounted. When required, valve movement can be restrained by inserting a suitable tool either through the inlet 2 or a separate tapped hole. In a further embodiment, Fig. 3, the valves are pivotally interconnected by a rocking lever 16 which is attached to a pivotally mounted spindle 17, flats being provided on spindle 17 to co-operate with a tool inserted through inlet 2 to restrain at valve movement.
Patent GB-228660-A (GB)
Title: Improvements in or relating to automatic and semi-automatic telephone systems
IPC: H04Q3/42
Filed: 1923-11-26
Abstract: 228,660. Coventry Automatic Telephones, Ltd., and Wilman, C. W. Nov. 26, 1923. Automatic exchange systems.-In a registercontroller of the code-translating type, the combined setting of three or more digit registers effects the selection of a particular relay (or relays) which determines the value of the translated digits to be sent out. In the example shown, in which registers R1, R2, R3 are set by the three exchange-designating digits of a subscriber's number, register R1 prepares a ground connection to one side of a group of relays 15, 17, 18 &c., register R2 connects battery to the opposite side of a different group 15, 16, 17, &c., whilst register R3 prepares locking circuits over a relay 5 for a third group 16, 17, &c. When the control switch RS moves to its 4th position, ground is connected over contacts 28 for the short interval during which relay 4 holds up to operate relays 15, 17, &c. common to the two groups selected by registers R1, R2. Of these common relays only that particular relay 17 which is also common to the group selected by register R3 will lock up, so that when relay 4 de-energizes relay 17 is the only relay remaining energized and this determines translation corresponding to the particular digit combination dialled. If, through an error, the combination dialled does not result in any relay remaining locked up, the release of relay 5 completes a circuit for a special relay 30 to perform any operations necessary for dealing with such a condition. In a modification employing four registers, the locking circuits for relays selected by the first two registers include wipers of both the third and fourth registers. The system may be further extended to include more registers, the general principle being that the first register or pair of registers closes temporary circuits for a group of relays, the second register or pair of registers complete locking circuits for certain of the operated relays, the third register or pair of registers completes further locking units for some , of the locked-up relays, the former locking circuits then being disconnected, and so on. An alternative locking circuit independent of the setting of the registers may be provided for the selected relay so that the registers mav be used again for further impulses. Specification 228,742 is referred to.
Patent GB-260117-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H01F27/30
Filed: 1925-11-26
Abstract: 260,117. British Thomson-Houston Co., Ltd., and Pollock, A. A. Nov. 26, 1925. Transformers. - In clamping devices for transformer coils in which spring-urged wedge means are provided for taking up shrinkage of the coils, means comprising a nut 7 is provided for adjusting the tension of the spring 8 for a given position of the wedge 5. The wedge is adapted to apply pressure to the lower member of a split shoe 3 which bears on the clamping plate 9. The upper member of the shoe abuts against a screwed rod 1 which may be adjusted to vary the position of the wedge sytem by means of a nut 4.
Patent GB-1314000-A (GB)
Title: Polyvinyl alcohol synthetic fibres
IPC: D02J1/22
Filed: 1971-06-25
Abstract: 1314000 Polyvinyl alcohol synthetic fibres UNITIKA Ltd 25 June 1971 [27 June 1970 (2)] 29987/71 Heading B5B Polyvinyl alcohol fibres are produced by spindrawing to give fibres of homogeneous crosssection which are then drawn at least twice at a high temperature. Preferably the draw ratios are 3À5 to 5 during spin-drawing and at least 3 during the first and at least 1À1 during the second hot drawing step. The preferred temperatures are above 160‹ C. for the first step and above 180‹ C. for the second and successive drawing steps. The moisture content during drawing steps after the first is preferably between 20 and 50%. The fibres exemplified are prepared by wet spinning an aqueous solution of polyvinyl alcohol into an alkaline coagulant bath.
Patent GB-425630-A (GB)
Title: Improvements in or relating to methods of etching
IPC: B41C1/02
Filed: 1933-10-30
Abstract: 425,630. Etching ; photo-mechanical printing - surfaces. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.- (Shellmar Products Co. ; 3501, West 48th Place, Chicago, U.S.A.) Oct. 30, 1933, No. 30091. [Class 100 (ii)] [See also Group XX] The rate of etching of a metal surface, e.g. a printing-cylinder, is controlled and is rendered independent of changes in humidity by cooling the etching solution employed by the addition thereto of a substance, such as solid carbon dioxide, which in changing from solid to gas reduces the temperature of the solution without affecting its concentration or composition. The solution, which may be any normal etching solution, such as ferric chloride, is preferably cooled to between 0 and 40‹ F., and in the preparation of an intaglio printing-cylinder through the usual photographically-prepared gelatine resist, the preliminary etching is done by rotating the cylinder in a solution at normal temperature and preferably somewhat weaker than the cooled solution while the subsequent treatment is performed by the cooled solution, and can, it is stated, be easily regulated as the rate of etch at any given temperature for a cold solution is slow and substantially constant. Further, it is also said that undercutting of the screen produced on the cylinder is much reduced. The gelatine resist consists of paper coated on one side with gelatine and glycerine, which is made light-sensitive by impregnation with a solution of potassium bichromate, and the absorption is made uniform by cooling the bichromate solution, preferably to between 40 and 50‹ F., by the addition of solid carbon dioxide.