baber/WOPTO huggingface dataset:
Patent GB-1109956-A (GB)
Title: Self-locking screw-threaded fastener device
IPC: F16B39/284
Filed: 1966-04-25
Abstract: 1,109,956. Locking nuts and bolts. EATON YALE & TOWNE Inc. 25 April, 1966 [14 May, 1965], No. 17942/66. Heading F2H. A fastener, e.g. a nut or bolt, comprises a tool engaging surface 4, a flange formed with a planar bearing surface to contact the workpiece, and plurality of resilient tabs radially extending therefrom. Each tab has a trailing edge inclined to a plane normal to fastener axis so as to form a point with the lower lateral edge. During tightening the point contacts the workpiece first, and is gradually transformed to line contact as the tab is deformed. The tabs may be axially spaced from each other to form a sinusoidal curve throughout the circumferential extent of the flange.
Patent GB-1184224-A (GB)
Title: High Capacity Electrolytic Coulometer
Inventor: CORRSIN LESTER
IPC: G01R22/02
Filed: 1967-04-19
Abstract: 1,184,224. Hypodermic syringes. L. CORRSIN. 19 April, 1967, No. 17959/67. Heading A5R. [Also in Divisions G1 and H1] . An electrolytic coulometer (see Division G1) in which mercury is displaced down a passageway 80 in proportion to the quantity of electricity passed between terminals 37, 39 of an electrolyis apparatus with mercury electrodes, is adapted for use as a drug dispenser by fitting a hypodermic needle to the open end of the passage way.
Patent GB-503379-A (GB)
Title: Improvements in and relating to light-sensitive material for colour photographic purposes
IPC: G03C7/26
Filed: 1937-10-04
Abstract: 503,379. Sensitive materials for colour photography. CASPAR, B. Oct. 4, 1937, No. 18034/38. Divided out of 503,330. [Class 98 (ii)] A light-sensitive printing-material for colour photography comprises three superimposed differently sensitized emulsion layers, the front layer being a silver chloride emulsion sensitive to short wave blue light but insensitive and transparent to long wave blue light, and at least one of the layers containing a. dyestuff for the formation of the final image. The front layer is sensitized for either'red or green light and contains the N-ethylnaphthoquinolinium salt of the dyestuff Pontamine Sky Blue 5BX. The middle layer isof a silver chloride emulsion sensitized for blue green by oxocarbocyanine ethyliodide and contains the dyestuff Rapid filter yellow. Silver bromide emulsion may also be used and requires no sensitizer for blue-green. The third layer comprises a silver chloride or silver bromide emulsion which is sensitized to infra-red by cryptocyanine, and contains the calcium salt of xylenwalkgelb G. The layers are arranged on either a transparent or an opaque support and printed as described in Specifications 397,159, 397,192, and 408,991. Silver iodide can be used instead of silver bromide in combination with the silver chloride emulsions. Dyestuff formers such as components of azo-dyos, hydrazo compounds and the leuco compounds of vat dyestuffs, may be included in the layers.
Patent GB-358996-A (GB)
Title: Improvements in or relating to systems of amplification of high-frequency energy
IPC: H03F1/08
Filed: 1930-06-12
Abstract: 358,996. Valve amplifying circuits. WHITE, A. E., 5, Quality Court, Chancery Lane, London. -- (Cusick, W. M.; 21, Chamberlain Street, Boston, U.S.A.) June 12, 1930, No. 18046. [Class 40 (v).] The input and output circuits of a high frequency amplifying valve comprise a transformer with a tuned secondary circuit 2 the primary 1 of which is connected to the series connection between the tuning condenser 3 and a condenser 4. The electromagnetic and electrostatic coupling to the secondary are in the same phase and the arrangement is such that a constant optimum value of energy is transferred throughout the tuning range while feed-back from the output circuit to the input circuit is prevented. Anode potential is applied to the valve 5 through a choke 9 and the primary winding is isolated through blocking condenser 10, Specification 273,639, [Class 40 (v), Wireless signalling &c.], is referred to.
Patent GB-544381-A (GB)
Title: Improvements in the manufacture of dies of diamond and like materials
IPC: B28D5/02
Filed: 1940-12-27
Abstract: 544,381. Drilling diamonds &c. GENERAL ELECTRIC CO., Ltd., and EDEN, C. G. Dec. 27, 1940, No. 18165. [Class 83 (iii)] In the manufacture of dies from diamonds &c. by drilling the hole is drilled partway through from one side and the diamond is then centred in a chuck by viewing the recess already drilled through a highly polished surface, on the other side, normal to the axis of the hole. The chuck 8 is mounted with its axis vertical for the centring by aid of a microscope 3 provided with cross-wires. The diamond 1 partly drilled at 2 is set by fusible metal 6 in a holder 7 universally adjustable in the chuck by four screws 9. The hollow spindle contains a quartz rod 11 up which light is reflected at 22 from a lamp 20 and a condenser 21. After centring the spindle housing 12 is rotated from the position in which it contacts with the stop 16 to contact with the stop 17, shown in dotted lines. The breaking through is effected by a diamond splinter held in tongs steadied on the rest 23.
Patent GB-1099075-A (GB)
Title: Improvements in or relating to polyolefine cellular products
IPC: C08F255/02
Filed: 1965-04-29
Abstract: The invention comprises an aliphatic polyolefin cellular product which is grafted and cross-linked by polymerized units of a compound containing two non-conjugated ethylenically-unsaturated double bonds. The cellular product is obtained by simultaneously foaming and polymerizing the compound. The polyolefin is preferably a polymer of an a -olefin of formula RCH=CH2, where R is an alkyl radical of 1 to 3 carbon atoms, e.g. ethylene and propylene. The double bonds of the cross-linking compound may be activated by the presence of a double bond between a carbon atom in an a -position and another atom.  In the examples, the compounds used are divinylbenzene, ethylene dimethacrylate, N,N1-methylene-di-acrylamide and divinyl sulphone; the foaming agents used are azocarbonamide and zinc acetate, carbon tetrachloride, 1,2-dichloro-tetrafluoroethane, N,N1-dinitroso-N,N1-dimethyl-terephthalamide and benzene-sulphonylhydrazide. In Example 3 ozonized polypropylene is used and in Example 4 polyethylene mixed with ethylene-vinyl acetate copolymer.
Patent GB-201011-A (GB)
Title: Improvements in or relating to overhead rope railways and the like
IPC: B61B12/02
Filed: 1922-07-03
Abstract: 201,011. White, J. W., and Valberg, C. 0. July 3, 1922. Rope grips.-Relates to load-actuated rope grips of the kind in which the movable jaw 7 pivoted at 5 is forced towards the fixed jaw 6 to grip the haulage rope 13 by a sleeve 9 sliding on the hanger and acted upon by the load. According to the present invention the sleeve 9 is formed with a projection 15 act. ing on a cam surface 14 of the arm 8 of the movable jaw, so that vibration of the grip or the hanger does not cause the jaws to loosen their grip on the rope. The rope is released from the grip when a roller 10 carried by the sleeve 9 runs on a fixed inclined rail, the sleeve being positively connected to the movable jaw by a link 12.
Patent GB-934347-A (GB)
Title: Improvements in and relating to apparatus for use in the preparation of beverages and the like
Inventor: EVERINGTON WILLIAM TOM
IPC: A23N1/02
Filed: 1959-05-28
Abstract: 934,347. Agitating appliances. J. LYONS & CO. Ltd. May 30, 1960 [May 28, 1959], No. 18196/59. Class 86. [Also in Group VI] Comminuted fruit in a hopper 11 is agitated by paddles 27 fitted on a carriage 24 mounted on rollers 25 and reciprocated by a double-acting pneumatic cylinder 26 or an hydraulic motor. Specification 934,348 is referred to.
Patent GB-495632-A (GB)
Title: Improvements in or relating to electric high-pressure metal-vapour discharge tubes
IPC: H01J61/42
Filed: 1938-06-20
Abstract: 495,632. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 20, 1938, No. 18275. Convention date, June 22, 1937. [Class 39 (i)] A high pressure metal vapour discharge lamp containing mercury with cadmium and /or zinc in such quantities that during normal operation their vapours are unsaturated has 1À5-6 per cent cadmium, À75-3 per cent zinc or a mixture containing specified quantities of zinc and cadmium and is provided with a layer of red fluorescent material. In the form shown, electrodes 2, 3 are spaced 22 mms. apart in a quartz envelope 1 having an internal diameter of 7 mm. and containing argon at about 20 mm. of mercury with 7À5 mg. of mercury and 0À2 mg. cadmium. The tube is secured in a bulb 7 having an internal coating 9 of zinc-cadmium sulphide with or without a blue fluorescent material which may be zinc sulphide and the space between the tube and the bulb 7 is exhausted. Specification 427,293 is referred to.
Patent GB-680780-A (GB)
Title: Manufacture and use of new derivatives of azo-dyestuffs
IPC: C09B43/18
Filed: 1950-07-21
Abstract: The invention corresponds with that of Specification 680,779 except that R2 in the formula represents a diazo residue containing an aroylamino group.  Thus dyestuffs of the formula <FORM:0680780/IV (c)/1> are acylated with 2 mols. of the monohalides of furane and thiophene sulphocarboxylic acids (see Specification 679,698, [Group IV (b)]), which may be prepared in situ, and the parent dyestuffs regenerated with alkali, e.g. on the fibre.  The p  ring-system formed by R1 and the benzene ring in the above formula may be naphthalene, anthracene, diphenylene oxide or carbazole.  The diazo residue R2 is preferably derived from a 4-aroylamino-2 : 5-dialkoxy-aniline.  In the examples: (1) the dyestuff 4-benzoylamino-2 : 5-diethoxyaniline --> 2 : 3-oxynaphthoicanilide is heated with furane-2-carboxylic acid-5-sulphonic acid, phosgene and pyridine; (2) the dyestuff 4-benzoylamino-2 : 5-diethoxyaniline --> 2 : 3-oxynaphthoic anilide or o-anisidide is heated with the acid of (1), p-toluenesulphochloride and triethylamine; (3) the dyestuff 4 - benzoylamino - 2 : 5 - diethoxyaniline --> 2 : 3-oxynaphthoic anilide is heated with thiophene-2-carboxylic acid-5-sulphonic acid, pyridine and p-toluenesulphochloride; (4) as in (1) using p-toluenesulphochloride instead of phosgene and using the acid as its disodium salt; (5) the dyestuff 4-benzoylamino-2 : 5-diethoxyaniline or 4-benzoylamino-2-methoxy-5-methylaniline --> 2 : 3-oxynaphthoic anilide is heated with the acid of (1), p-toluenesulphochloride and triethylamine; (6) the dyestuff 4-benzoylamino - 2 : 5 - diethoxyaniline is heated with furane-2-carboxylic acid-5-sulphochloride and pyridine; (7) cotton is printed with a paste containing the product of (1), thiodiglycol and starch-tragacanth thickening; the print is developed with ammonia, malted and soaped; (8) wool is dyed in an acid bath with the product of (1) and the dyeing developed with ammonia, followed by soaping with a wetting agent.  Additional groups are specified for R2 and "Aryl" in the above formula.  Specifications 480,358 and 512,664 also are referred to.
Patent GB-191338-A (GB)
Title: Driving mechanism for cigarette machines
IPC: A24C5/39
Filed: 1922-07-04
Abstract: 191,338. Marks, E. C. R., (American Machine & Foundry Co.). July 4, 1922. Cigarette-making machines.-Variations in the rate of feeding of the tobacco and the consequent variations in quality of the cigarettes owing to the varying condition of the tobacco are corrected by adjusting the speed of the forming mechanism. In the form illustrated in Fig. 2, a belt 17 running over conical pulleys 12, 13 connects the constant-speed power-shaft 10 with the forming- mechanism driving-shaft 15 and is adjustable on the pulleys by means of belt forks.
Patent GB-319642-A (GB)
Title: Improvements relating to the production of butyl alcohol and acetone by fermentation
IPC: C12P7/28
Filed: 1928-06-25
Abstract: 319,642. Distillers Co., Ltd., and Hutchinson, H. B. Jan. 25, 1928. Acetone.-In the production of butyl alcohol and acetone by fermentation, the yield of acetone is increased by the addition of ammonium acetate. By this means raw material such as manioc usually regarded as too poor in protein may be used. The salt may be added at one time, at intervals or continuously. An example is given. Specification 319,079 is referred to.
Patent GB-1446011-A (GB)
Title: Band knife machines
IPC: B26D1/46
Filed: 1973-04-17
Abstract: 1446011 Cutting apparatus THOMAS BEECROFT & CO Ltd 22 Jan 1974 [17 April 1973] 18441/73 Heading B4B A band knife cutting machine for severing carpet pile 37 between backings 39, 41 of a double ply broadloom carpet comprises an endless band knife 7, guide plates 11, 13 supporting the upper run of the knife which contacts the pile during a severing operation, and a further pair of guide plates 21, 23 to guide the carpet to the knife. The knife guide plates 11, 13 are supported by a beam, rollers 17 being provided on the guides for supporting the rear edge of the blade during cutting. The knife passes over pulleys 5 located in separate housings 3, 4; one housing may be adjustable relative to the other in order to tension the knife. The linear speed of the knife may be varied to suit various materials. A pair of guide plates 21, 23 are located upstream of the knife edge for guiding the carpet, the spacing between the plates being adjustable to suit various thicknesses of carpet.
Patent GB-746773-A (GB)
Title: Improvements in electroacoustic devices
IPC: H04R25/04
Filed: 1953-07-03
Abstract: 746,773. Electro - acoustic transducers. AMERICAN DANISH OTICON CORPORATION. July 3, 1953 [July 3, 1952; June 6, 1963], No. 18547/53. Class 40 (4). In a moving-iron electro-acoustic transducer comprising an annular permanent magnet 4 and a central pole-piece 1, the plate 6 on which the magnet unit is mounted has an annular corrugation pressed therein so that a diaphragm 10, resting against it on the opposite side of the plate to the magnet unit is accurately spaced from the central pole face 8. In the method of assembly described the depth of the corrugation may be adjusted by a further pressing after the gap between the pole-face and the diaphragm has been measured. The yoke 2 and the coil 3 are cemented to provide an air-tight chamber at the back of the diaphragm and the characteristics of the device are determined by the size of a hole 21 leading from the chamber. Coil leads are led out through a cut-away portion of the yoke and are made-off on terminals mounted on an insulated strip 12. The degree of magnetization for each device is determined practically by applying a testing signal of stronger than normal intensity and gradually reducing a strong initial magnetization until the maximum undistorted output is obtained. The device shown may be used as a transmitter or a receiver in a deaf aid set, Fig. 1, wherein an acoustic outlet k from the receiver is coupled to an earpiece l by a tube m. The set includes a volume control e, and plug-and-socket connecting arrangements are provided. In a modification, Figs. 7, 8, 9 (not shown), the diaphragm 10 serves purely as part of the armature and is coupled by a cential spindle to an acoustic diaphragm the central portion of which is provided with radial corrugations. The acoustic diaphragm is, in this latter case, mounted on the upturned periphery of the supporting plate.
Patent GB-587886-A (GB)
Title: Improvements in high frequency electrical ignition systems for internal combustion engines
IPC: F02P3/08
Filed: 1943-11-08
Abstract: 587,886. Ignition systems. BRITISH THOMSON-HOUSTON CO., Ltd., and WELCH, D. F. Nov. 8, 1943, No. 18562. [Class 7 (iv)] In a high frequency ignition system for an internal combustion engine each plug lead is provided with a series resistance r having a value determined by the relation: Where V =open circuit voltage C =capacity of that part of the distributing system which is connected to the generating system for any one spark. C<1> =Sum of the reservoir capacity C0 Fig. 1 and C in the case of the series inductance type of circuit shown in Fig. 1 and arranged according to Specification 560,495. In the case of the transformer type circuit shown in Fig. 2 the constant C<1> is equal to twice the sum of the effective reservoir condenser capacity L1 (i.e., Co x -) and C. In an example given in L2 the Specification when V = 15 kv. t = 25 x 10<-6> secs. C = 250 ÁÁf and C<1> = 1000 ÁÁf the value obtained for r is between 260 and 470 ohms. Specification 485,949 also is referred to.
Patent GB-264569-A (GB)
Title: Improvements relating to the extraction of lead from materials containing it or its compounds
IPC: C22B19/02
Filed: 1925-07-21
Abstract: 264,569. Smith, S. C. July 21, 1925. Lead and antimony chlorides; silver iodide.- Complex lead sulphide ores and concentrates are treated with hydrochloric acid in excess at about ordinary temperature so as to convert the lead sulphide into chloride while leaving other sulphides, particularly zinc sulphide substantially unaffected. To effect this the hydrochloric acid is employed concentrated and in excess, the acid liquor being drawn off and employed again for a preliminary treatment of another batch of ore while the chloridized ore is treated with a solvent to extract the lead chloride. Agitation may be effected by air, which removes the sulphuretted hydrogen, or the process may be effected in a rotary barrel. Sulphuretted hydrogen may be removed by adding sulphur dioxide. The acid treatment may be effected by percolation, and may be in several stages, the ore being treated with hydrochloric acid of increasing strength, and finally with excess of concentrated acid. The partially spent acid may be employed to treat crude lead sulphate or roasted ore containing lead sulphate to produce lead chloride. When the ore contains silver, the partially spent acid is treated with an oxidizing agent such as air or chlorine, the chloridized ore being agitated in this liquor to extract the silver. If the liquor does not contain iron, manganese or like chloride such a chloride may be added. The extracted silver is precipitated as iodide, sulphide, or metal. When the ore in its natural state contains lead sulphate, less hydrochloric acid is sufficient than would be expected since chlorides, such as magnesium, calcium, and iron chlorides, which are usually produced from the ore also react upon lead sulphate. If the ore does not contain lead sulphate, this may be provided in any known manner, to an extent equivalent to those chlorides, for instance by a slight roasting of the ore sufficient to convert a small proportion of the lead sulphide into sulphate without substantially affecting the zinc sulphide. But if the ore in its natural state contains more lead sulphate than is equivalent to the chlorides mentioned, other chlorides such as sodium, calcium, or ferrous chloride may be added to the hydrochloric acid in such proportion as to dissolve in the liquor and convert the excess of lead sulphate into chloride. The ore may be subjected to a heat treatment to a dull red heat, without oxidation, before the acid treatment. When the ore contains acid-soluble constituents other than lead, it may be given a preliminary treatment with sulphuric acid to extract such materials or some sulphuric acid may be added to the partially spent hydrochloric acid which is used to treat the fresh ore. The Provisional Specification states that the invention may be applied to other ores of lead, such as carbonate, molybdate, vanadate and sulphate.
Patent GB-695466-A (GB)
Title: Oven loader and unloader
IPC: C21D9/00
Filed: 1950-07-25
Abstract: 695,466. Charging and discharging furnaces. HOMMEL CO., O., and PAUL, W. W. July 25. 1950, No. 18609/50. Class 51(ii) [Also in Group XXX] A device for handling articles among selected locations comprises an intermittently rotatable pedestal 23 from which extend booms 44 each capable of vertical movement and each carrying a fork 54 which can be extended as shown at B. As applied to a vitreous enamelling plant, at position A; articles are suspended from a pallet 58, supported by a fork 54, at position B the fork is first extended into an oven 50, is then lowered to deposit the pallet on support members 46 and is finally withdrawn. After the articles have been fired, the fork is re-inserted, raised and withdrawn with the pallet; at position C the articles are allowed to cool and at position D the pallets are unloaded. Runways 30, which are secured to the pedestal, guide rollers 31, Fig. 5, on the inner ends of the booms 44 so causing the booms to remain horizontal during raising and lowering thereof by a pneumatic ram (not shown). The booms are connected in pairs by cables 36 passing over pulleys 35 and thus counterbalance each other. The pedestal is intermittently rotated by a ram 74, Fig. 11, which reciprocates a member 76 which loosely surrounds the pedestal 23, but is engageable therewith on extension of a piston 81 from a cylinder 89, secured to the member 76, into one of a series of holes 82 in a collar 182 secured to the pedestal. Bearings (not shown) secured to the roof and floor of the building rotatably support the pedestal. Each fork 54 is mounted on wheels 93 guided by side members 33 of the associated boom, and movement of each fork is effected by an endless cable 42 secured to a fork stanchion 96 and passing over a manually rotated drum 80. A frame 55 secured to the front of the boom carries a projection 59 which engages guides 60, Fig. 15, on the oven door when it is raised by a ram 69 and so centres the fork. All the pneumatic rams are controlled from a desk 88, Fig. 4.
Patent GB-711446-A (GB)
Title: Improvements in tobacco cutting machines
IPC: A24B7/12
Filed: 1952-07-23
Abstract: 711,446. Cutting tobacco. KORBER, K., and KOPER, E., [trading as KORBER & CO. KOMMANDIT-GES., K.]. July 23, 1952 [May 14, 1952], No. 18623/52. Class 5 (1) A recess 8 merging into a guide surface 9 is provided behind the blade 4 of a tobacco cutting machine to direct cut tobacco away from the machine, the mouth y of the recess being approximately at right angles to the cutter and its depth y being approximately four times its width x. The recess may be formed of elliptical, cylindrical or angular shape, Figs. 2, 3 and 4. The surface 9 may be convex at 9<SP>1</SP> towards its further end.
Patent GB-1162620-A (GB)
Title: Electrical Contact for Assembly in a Housing
IPC: H01R12/70
Filed: 1968-04-19
Abstract: 1,162,620. Two-part couplings. UNITEDCARR Inc. 19 April, 1968 [18 May, 1967], No. 18662/68. Heading H2E. An electrical contact for assembly in an insulating housing, for example a printed circuit board edge-connector, provides means whereby it can be connected to juxtaposed contacts in adjacent housings by a bus-bar 20. The contact comprises a tail 12 provided with barbs 14 and having a pair of connector portions 16 extending therefrom and a pair of resilient arms 18 extending from each portion 16, the arms being bent towards one another in order to make contact with bus-bar 20. The remainder of the contact comprises a pair of spring fingers 24 disposed in spaced relation to one another and bent as shown, the ends 26 being provided with shoulders 30 (and 32) which co-operate with shoulders in the housing to restrain the contact in place whilst allowing a small displacement. The housing is rectangular, with a base 36 and is equipped with slots (40 and 48) to receive a printed circuit board and bus-bar respectively. The tail 12 passes through an aperture 58 in the base and a continuation of aperture 58 in a tubular portion 60 extending from the base, the barbs 14 co-operating with the housing to lock the contact in place.