baber/WOPTO huggingface dataset:
Patent GB-138431-A (GB)
Title: Improvements in or relating to boxes applicable for use as windguards
IPC: F21V37/02
Filed: 1919-02-13
Abstract: 138,431. Gatrill, A. F. M. Feb. 13, 1919. Portable oil and spirit stoves.-A box applicable for use as a container and wind-guard for a blow-lamp comprises a cover part A and a body part B hinged together at C, a handle D being pivoted at F and passed through holes E so arranged that the box may be opened and closed by movement of the handle. In order to prevent the handle from projecting far from the box when the box is closed, a chain handle may be employed; or the handle may be slidably mounted in its pivotal supports F. Supports K may be provided for a melting-pot, soldering-iron, &c. The box may have a lining of asbestos or other fireproof material.
Patent GB-969767-A (GB)
Title: Improved catalysts for the polymerization and copolymerization of mono-olefins and di-olefins
IPC: C08F4/20
Filed: 1960-12-29
Abstract: Silica, alumina or alumina-silica of particle size less than one micron and having surface hydroxyl groups is reacted at below 115 DEG C. with a Group IVA, VA, VIA metal halide or oxyhalide in the vapour state, neat or diluted by an inert oxygen free carrier gas, to incorporate metal and halogen components on the surface. Specifications 969,762, 969,763, 969,764, 969,765 and 969,766 also are referred to.ALSO:A polymerization catalyst suitable for polymerizing up to C8 mono- or di-olefins, identical with that of Specification 969,766, except that the halide treated silica or alumina or alumina-silica component is produced by a modified process involving the use of the vapour of the halide below 115 DEG C. Specifications 969,762, 969,763, 969,764 and 969,765 also are referred to.
Patent GB-786783-A (GB)
Title: Modified polyamide resins
Inventor: SWANN GEOFFREY
IPC: C08L77/00
Filed: 1955-02-07
Abstract: Modified polyamides are derived from formaldehyde, a dimeric fatty acid containing two carboxyl groups in the molecule and an aliphatic triamine.  Specified dimeric fatty acids, which may contain up to 20 per cent by weight of dicarboxylic acids, e.g. adipic acid, sebacic acid, iso- and tere-phthalic acids or rosin dimer are polymerized fatty acids such as polymerized linoleic acid.  Specified aliphatic triamines, which may contain up to 20 per cent by weight of other organic polyamines, e.g. ethylene diamine, propylene diamine, hexamethylene diamine, p-phenylene diamine, p,p1-diamino diphenyl methane or triethylene tetramine, are diethylene triamine or 3,31-diamino-di-propyl amine.  The preformed polyamides may be modified by reaction with formaldehyde or the product of the reaction between the triamine and formaldehyde may be reacted with the dimeric fatty acid.  The modified polyamides may be blended with incompletely condensed phenol-formaldehyde resins, specified phenols being phenol, cresol, xylenol, p-tertiary butyl phenol or diphenylol propane, in solution in butanol, isobutanol, secondary butanol, tertiary butanol, propanol, isomeric amyl alcohols, aromatic solvents, water or ethanol and with epoxy resins containing terminal epoxy groups, e.g. the reaction products of polyhydric phenols with epichlorhydrin or glycol chlorhydrin.  In the Examples, (1), (2), (5), (6) and (12), polyamides made from dimer fatty acids and diethylene triamine are reacted with formaldehyde, a phenol-formaldehyde resin being blended with a solution of the product of Example (1) in butanol; (3) and (4), formaldehyde is reacted with diethylene triamine, the product being reacted with dimer fatty acid and blended with an epoxy resin; (7) a solution in butanol of a polyamide derived from dimer fatty acid and 3,31-diamino-di-propyl amine is reacted with paraformaldehyde and in Example (9) is blended with epoxy resins; (8) formaldehyde is reacted with 3,31-diamino-di-propyl amine and the product reacted with dimer fatty acid; (10) formaldehyde is reacted with a mixture of diethylene triamine and ethylene diamine, the product being reacted with dimer fatty acid; (11) a mixture of dimer fatty acid and adipic acid is condensed with diethylene triamine and modified by reaction with formaldehyde in the presence of N-butanol. The products may be used in forming films and for coating, moulding, casting, laminating or impregnating.
Patent GB-633253-A (GB)
Title: Apparatus for the closing and opening of electrical circuits by variation of liquid level in tanks, wells, boreholes, reservoirs, sewage chambers and the like
IPC: H01H29/28
Filed: 1948-02-09
Abstract: 633,253. Mercury and other conducting-liquid switches; actuation of switches. STUBBS, A. D. Feb. 9, 1948, No. 3658. [Class 38 (v)] A mercury switch immersed in a tank, well, borehole, &c., so as to control pumps or give signals at certain liquid levels, comprises a compressible mercury container p connected to the lower end of an air chamber j into which are sealed electrodes k, l, m. The chamber and container p are protected by a cylinder a having holes b permitting the liquid to act on the container p. Rises in the level of the liquid compress container p and force the mercury upwards into chamber j to engage the electrodes which are sealed by sleeves d, e, g, which fit over a double-cone rubber sleeve f. The part of the cylinder a around the chamber j may be omitted if the latter is made of steel (Fig. 2, not shown). In a further modification (Fig. 3, not shown), for use where the rise in level is only a few inches, the upper end of the chamber j is enclosed in a rubber sleeve secured thereto at the top and bottom, access being had to the interior of the sleeve through openings in the chamber.
Patent GB-179272-A (GB)
Title: Improvements in or relating to rotary furnaces
IPC: F27B7/04
Filed: 1921-01-31
Abstract: 179,272. Newberry, S. B. Jan. 31, 1921. Rotary furnaces.-A rotary furnace comprises an outer cylinder supporting an inner concentric cylinder of refractory material extending through a part of its length, and rotating therewith, into which raw material is fed to be heated by the hot gases passing along the space between the cylinders, and from which volatilized products are drawn off. An outer cylinder A, Fig. 1, has an inner cylinder C extending for a part of its length, and built up of tiles N, O, P, Fig. 3, or of hollow wedge-shaped members of refractory material. When the furnace is in operation, material to be calcined, for example cement-forming material, mixed with fuel, is fed from a hopper H by a conveyer I into the upper end of the inner cylinder C. Waste gases from the hot zone passing along the space D to the flue F vaporize volatile ingredients, which are drawn off by a fan K and condensed. The materials with carbonized fuel pass to the lower end of the furnace and are calcined, hot air being admitted by a pipe Q. If necessary, some of the volatile constituents are injected with the air, a pipe R leading from the condenser for this purpose.
Patent GB-572071-A (GB)
Title: Improvements in and relating to the metallisation of non-conductive fabrics and fibrous materials
IPC: C25D5/54
Filed: 1944-02-29
Abstract: 572,071. Metallizing non-conductive fabrics. CALLENDER-SUCHY DEVELOPMENTS, Ltd., and SUCHY, C. T. Feb. 29, 1944, No. 3712. [Class 41] In order to ensure the perfect adhesion of metal coatings on non-conductive fabrics and fibrous or porous materials such as paper, felt, asbestos, unglazed ceramic ware, and leather, the internal structure of the material is rendered conductive, whilst leaving the external surface non-conductive, and the metal plated on to the conductive internal structure beneath the surface. Where copper is the coating metal, a preliminary flash with copper cyanide can be given. A noble metal can be plated on to the copper. The material is, if necessary, initially degreased with trichlorethylene, hot-washed, and rinsed. It is then immersed in a 2-3 g.p.l. solution of stannous chloride, and washed, and then impregnated in a solution of ammoniacal silver hydroxide to which is added a reducing sugar solution immediately before use. Details of preparation of these solutions are given in the Specification. Agitation is resorted to during the impregnating process which lasts 20-30 minutes, and if necessary a second impregnation may be resorted to. The material is then washed, dried, and brushed to remove metallic silver particles from the surface, and then transferred to the electrolytic bath. Since moisture is absorbed in the Tatter, it is desirable to interrupt the electrolysis and dry the material thoroughly, the deposit being then polished to close all.pores in the coating and prevent further ingress of moisture during completion of the process. The initial deposit is effected at ¢ amp./dm' and 1¢-2 volts, the voltage being later increased to 4-6 and amperage to 1, accompanied by heat and agitation.
Patent GB-607496-A (GB)
Title: Improvements in or relating to sheet delivery mechanism
IPC: B65H31/10
Filed: 1946-02-06
Abstract: 607,496. Sheet - delivery apparatus. TIMSONS, Ltd., and MILES, G. R. H. Feb. 6, 1946, No. 3742. [Class 100 (i)] In a sheet-delivery mechanism wherein the sheets are automatically piled on delivery and a support 1 for the pile is automatically adjusted in conformity with the accumulation of sheets thereon, a shaft 2 from which the support 1 is raised and lowered is driven by an electric motor 14 controlled from a switch under the control of a feeler 10 adapted to contact with the top of the pile whereby the motor is started and stopped in accordance with the requirements of the feeler. The support 1 is suspended from chains 3 passing over sprockets 4, 5 and 6, the sprocket 4 being driven by a worm on the shaft 2. The member 10 is pivoted at 11 on a normally fixed horizontal arm 12 carrying a switch member adapted to close contacts 18. A hand starter may be provided to enable the motor to be used additionally for raising and lowering the pile preparatory to loading &c., the arm 12 being moved to the broken-line position. Specifications 325,902, [Class 100(i)], and 537,909 are referred to.
Patent GB-367161-A (GB)
Title: A new or improved composition for surfacing roads, floors, pavements, platforms, playgrounds, tennis courts, roofs and the like, and a process for the manufacture thereof
IPC: E01C7/18
Filed: 1931-02-06
Abstract: A composition for surfacing roads, floors, tennis courts, &c., consists of a mixture of sand, bitumen and clay (preferably fire clay), with or without ashes or other filler in the following percentage proportions by weight: sand 75 to 86, bitumen 11 to 15, clay 3 to 10.  A road surfacing composition is made by drying the sand, clay and filler, boiling the bitumen, adding the solid ingredients and churning.  Specifications 364/13 and 203,740, [both in Class 22, Cements &c.], are referred to.
Patent GB-539277-A (GB)
Title: Method and apparatus for grinding or polishing metal sheets
IPC: B24B7/02
Filed: 1940-02-29
Abstract: 539,277. Grinding metal surfaces. MASSE, T. J. Feb. 29, 1940 No. 3823. Convention date. March 29, 1939. [Class 60] In a method of and apparatus for grinding or polishing a metal surface such as zinc or copper sheets for use in photoengraving a rotary abrading pad is moved in circular paths over the surface while flushing liquid is flowed on to the surface from the centre outwards of the abrading path. The work table 10 runs on rails 11 and is fitted with a gutter 14 for the reception of cutting liquid. The table is driven by a pair of chain belts 15 passing over sprockets 16, 17 driven from motor 21 through a gearing 23, 25. A slide block 19 carried between the chain belts engages a driver fork 20 to impart a slow movement to the table which movement to avoid shock is gradually retarded and accelerated at the ends of the stroke where there are slight pauses owing to lost motion. Two grinding- spindles 33 are mounted vertically'on a carriage 32 which is reciprocated also by a slide block engaging a fork on the carriage and operated by belt gearing passing over sprockets which are driven from a motor 44 through a speedreducing pulley and chain gearing. The gutter 14 drains through a pipe 46 and tray 47 into a separator 48 which extracts the metal particles and delivers the liquid, preferably kerosene or stearine oil, to a chamber 49, whence it is recirculated by a pump 45 driven from motor 44. The grinding-heads include hollow shafts 51 which are both belt-driven from a motor 50, and which run on ball bearings 52, 53 in fixed yokes 54. The shafts are fitted with fork arms which carry leaf springs 169 which impart a resilient drive to a cross pin 68 on a hollow spindle 57 which can slide over the shaft 51. A valve 60 controls flow of flushing liquid to the hollow shafts 51, 57. Fixed casing members 65 carry a sliding tubular carrier 69 having bearings 66, 67 for the spindle 57. the carrier and spindle being urged downwardly by springs 70. The bearings are protected by upper and lower leather dust collars 74, 76. The grinding-heads each comprise a bar 81 to a flange 83 and carrying curved felt pads 85 on which strips 86 of abrasive fabric are held by clips 84. Several different fabrics graded from 120 to 320 may be used for completely finishing a sheet and the downward pressure on the head for zinc sheets may be above 151b. The flushing liquid passes through the bar 81 on to the sheet between the pads. The tools may be lifted against the spring pressure by means of a cam bar 93, Fig. 2, coacting with rollers on the members 73. The spindles are rotated at about 2200 r.p.m. In operation, the grinding heads move on the guides 30 and the worktable is simultaneously traversed along the rails 11 while the surface of the sheet is covered by overlapping swathes. In some cases the sheet may be treated successively in different machines fitted with abrasive sheets of progressively finer grade.
Patent GB-537318-A (GB)
Title: Improvements in shuttles of looms for weaving
IPC: D03J5/08
Filed: 1940-03-01
Abstract: 537,318. Looms. HODGKINSON, J., HODGKINSON, A., and HODGKINSON, W., (trading as HODGKINSON & SONS, J.). March 1, 1940, No. 3852. [Class 142 (iii)] Shuttles,-The peg B, rests on the head e of a screw E or on a nut c<SP>1</SP> on a stud E<SP>1</SP>, the screw head on the nut having flat sides to engage a spring wire G which prevents it from rotating after being turned to adjust the level of the peg B.
Patent GB-371504-A (GB)
Title: Improvements in or relating to pressure-regulated apparatus, particularly pressure gauges
IPC: H01L29/00
Filed: 1931-02-06
Abstract: 371,504. Electrically-actuated valves. BECQ, A., 80, Rue Monge, Paris. Feb. 6, 1931, No. 3879. Convention date, Feb. 6, 1930. [Class 135.] In controlling fluid pressure, or temperatures, use is made of the variation of the electrical resistance of a dry surface rectifier, particularly a coppercuprous oxide rectifier, due to variation of pressure contact between the surfaces, to translate fluid-pressure variations into electric current variations which are used to effect the control of the pressures or temperatures. As shown, the apparatus comprises a chamber 25 having a diaphragm 22 subjected on one side 24 to fluid pressure while its other side is connected to a rod 21 which passes through a guide 26 and is connected to a plate 3 adapted to bear against a copper-cuprous oxide rectifier 1, 2. The rectifier is carried by a block 27 secured to a plate 28 fixed to but 'insulated from chamber 25, and leads are taken from 28, 25 to a battery or other source 30 and indicating or controlling device 31 which are thus in circuit with the rectifier. The device 31 may be a galvanometer calibrated to read pressures, or it may be an electromagnetic relay operated when the current, and therefore the pressure, reaches a critical value in order to prevent further rise of pressure. The fluid may be a gas subject to temperature it is desired to control, and the electromagnet relay may control supply of current to an electric heater. The rectifier may be spring-mounted on plate 28 so that it yields to excessive pressure or it may be arranged so that increase of fluid pressure decreases the pressure on the rectifier. If the movement of the diaphragm is too great or two small, reducing or amplifying devices such as levers may be used. The arrangement may be such that, normally, the plate 3 does not bear on the rectifier, a non-arcing contact being made when pressure increases. Where the source 30 is D.C. it must be poled so that current flows from oxide to copper, but where A.C. is used this precaution is unnecessary. To provide the necessary surface area or to limit the voltage applied across the rectifier two or more rectifying units may be used in parallel or series as the case may be.
Patent GB-758444-A (GB)
Title: Improvements in or relating to metal protectors for footwear
IPC: A43C13/04
Filed: 1953-02-12
Abstract: 758,444. Boot protectors. EVANS, D. J. May 12, 1954 [Feb. 12, 1953], No. 3924/53. Class 17 (3). Sole-edge protecting metal strips 2 having an inturned lip 4 adjacent to the upper are attached as by screws 3 as described in Specification 309,803, [Class 17 (iii)]. The strips 2 are provided with a portion 5 extending over the sole and secured by rivets or screws. Hob nails 6 are passed through holes in this portion 5.
Patent GB-526095-A (GB)
Title: Improvements in and relating to bust supports
IPC: A41C3/00
Filed: 1939-03-07
Abstract: 526,095. Brassieres. KEMP, V. F., and KEMPAT, Ltd. March 7, 1939, No. 3952/38. [Class 141] The free ends of the overlapping lower inner extremities a', b' of the breast pockets a, b, are each adapted to be detachably connected to the free end of an elastic strap g or h, attached to the outer end of the same pocket. The pockets are connected together by stitching i or by buttons, hooks and eyes &c.
Patent GB-222820-A (GB)
IPC: E05B27/06
Filed: 1924-02-15
Abstract: 222,820. Deutsche Gasgluhlicht Auer Ges., (Assignees of Auerlicht Ges.). Oct. 4, 1923, [Convention date]. Revolving-barrel.-A revolving-barrel lock has one set of pin-tumblers a radially arranged in s transverse plane, as shown in Fig. 1, and other tumblers b, b<1> longitudinally arranged before and behind the transverse plane, as shown in Fig. 2. The tumblers may.be made of tempered metal to prevent drilling. The Specification as open to inspection under Sect. 91 (3) (a) refers to Specification 1140/15. This reference does not appear in the Specification as accepted.
Patent GB-175622-A (GB)
Title: A process of drying yeast
IPC: C12N1/04
Filed: 1922-02-10
Abstract: 175,622. Klein, E. Feb. 15, 1921, [Convention date]. Gaseous currents, materials carried by.-Yeast is reduced as finely as possible while being dried by an air current passing through it, and is carried away, preferably by the air current, as the drying advances, to allow the use of higher temperatures and lower pressures. The apparatus shown comprises a closed vessel 1 having a perforated false bottom 2 and a disintegrator 3. Air is first passed through at 20‹-30‹ C. until the moisture content falls to about 30 per cent, suitable substances being added to effect a quick reduction to this value. Air at 50‹ C. is then passed through and carries the dried yeast particles away to a collector 8 wherein they are afterwards dried at a still higher temperature.
Patent GB-774323-A (GB)
Title: Improvements in optical image director
IPC: B41B21/14
Filed: 1955-02-10
Abstract: 774,323. Optical apparatus; photographic type-composing. PERKIN-ELMER CORPORATION. Feb. 10, 1955 [Feb. 11, 1954], No. 4012/55. Classes 97(1) and 98(1) In an apparatus for enabling a light signal to be received at a fixed position from any one of an array of like co-planar areas, a combination of plane reflecting surfaces and a projection lens transmit the light from the areas, the number of reflections depending on the distance of the lightemitting coplanar area from the central area. Preferably, a plurality of mirrors 21 are disposed about the optical axis of projection lens 20 so that the number of reflections of the rays B<SP>1</SP>, B<SP>2</SP>, from adjacent co-planar areas, differ by unity. The figure of the cross-section of the prism formed by mirrors 21 is similar to that of the co-planar areas. As shown, in photographic type-composing apparatus images of the characters in co-planar areas on the font plate 12 are projected by lens. 20 on to a fixed position at light sensitive element 10. The number of different orientations of the characters is twice the number of non-parallel sides of the prism formed by mirrors 21.
Patent GB-782699-A (GB)
Title: Method of manufacture of phosphatic fertilizers from natural phosphates and a sulphurous solution
IPC: C05B3/00
Filed: 1955-02-10
Abstract: A mineral phosphate is digested in a cold saturated aqueous sulphur dioxide solution under pressure, the so-formed liquor separated from the residue and a solution saturated with respect to each of P2O5 CaO and SO2 obtained (a) by adding bicalcium phosphate (e.g. a portion of the final product of a previous operation of the process) to precipitate calcium sulphite which is filtered or decanted off, or (b) by eliminating SO2 from the liquor, redissolving only the calcium phosphate in a cold saturated solution of SO2 and filtering or decanting off the calcium sulphite; the trisaturated solution is then heated to eliminate SO2 and precipitate bicalcium phosphate.  Sulphur dioxide may be recovered and the mother liquor reused in the attack on mineral phosphate.  Examples of the alternative procedures are given.
Patent GB-396794-A (GB)
Title: Improvements in internal combustion engines
IPC: F01L5/18
Filed: 1932-02-10
Abstract: 396,794. Four-stroke engines. CLAUS, P. S., 11836, Hamilton Avenue, Highland Park, Michigan, U.S.A. Feb. 10, 1932, No. 4020. Convention date, Sept. 14, 1931. [Classes 7 (ii), 7 (v), and 7 (vi.)]. The piston works in a sleeve 7 with enlarged head 7a, the sleeve being reciprocated by cams 98 ; it moves in advance of the piston so that the maximum or ignition compression pressure is reached before the piston is at top dead-centre. As the sleeve moves down from the top of its stroke, it keeps constant or enlarges the combustion space, although the piston is still moving up; when the piston has moved some way on its power stroke, the sleeve is returned to its top position ; the cams are circular for the greater part of their contour to give prolonged dwell at the top. The piston and sleeve, at the top of their working stroke, form with the recessed cylinder head a small chamber 41, which receives part of the combustible charge ; this is driven into the main burning charge in the cylinder by the head of the sleeve as it rises into the recess. In a modification, two small pistons in auxiliary cylinders control the combustion-space volume in the same manner as the head of the sleeve. Valves; valve gear; regulating.-Admission and exhaust to and from the cylinder is controlled by a valve 25 leading through a duct 26 to outlet and exhaust manifolds 29, 28 ; a valve 32 ensures correct connection of the duct 26. The inlet valve 25, which carries a fuel-injection valve, is worked by a rocker 21b which bears on a plate 35 guided in its movement by a projection 36 ; the plate bears on a washer fixed to the valve stem 34, the valveclosing spring 35a acting on this washer. The fuel valve is opened by the rocker 34a. The cam shafts 9, 9a are driven at half-speed through gearing including an axially adjustable pinion with helical teeth ; by movement of this pinion the working of the valves and sleeve 7 mav be advanced for higher speeds, the ignition being earlier. Starting.-Attached to the arms 8 carrying the cam bowls which work the sleeve 7 are two pins 18 formed with slots 19 at their ends ; bars are passed through these slots and during normal running do not affect the reciprocation of the pins and sleeve. At starting, these bars are pulled to bring cam projections thereon into the slots in the pins, thereby raising the sleeve to its top position and holding it there.