baber/WOPTO huggingface dataset:
Patent GB-416721-A (GB)
Title: Improvements in or relating to multi-speed gears
IPC: B62M9/10
Filed: 1933-02-15
Abstract: 416,721. Multispeed gearing. WILDE, J., 16, Larwood Avenue, Stockport. Feb. 15, 1933, Nos. 4582 and 7413. [Class 80 (ii).] In a multispeed gear particularly for pedal cycles in which the chain is shifted from one sprocket to another, the sprockets being moved axially into the plane of the chain by a slidable bobbin 12 operated by a cable or rod 63, as described in Specification 382,104, the sprocket wheels together with their free wheel base 1 are connected by screws 7, which are readily insertable and removable from the exterior of the gear, to slides 5 which are connected by pins 10 to the bobbin 12. In a modification, the free wheel base may be connected directly by screwed pins to the bobbin 12.
Patent GB-1365172-A (GB)
Title: Chemical plating composition
Inventor: FRANZ H
IPC: C23C18/28
Filed: 1972-02-01
Abstract: 1365172 Electroless plating baths PPG INDUSTRIES Inc 1 Feb 1972 [2 Feb 1971] 4594/72 Heading C7F A Ni, Fe or Co electroless plating bath comprises the metal compound, a borohydride reducing agent, and a menocarbonyl containing compound which is a ketone or condensed ketone. The bath may also contain acetic, propionic citric, tartaric or boric acid, glucenic acid, ammonium hydroxide, hydrosine hydrate, sulphate tartrate, and a wetting agent. The solvent may be water, ethyl alcohol or propenol. The bath temperature is 35 to 100F and pH above 7. The metal compound solution and the reducing solution may be sprayed separately on to a substrate which may be glass or plastics coated with Cu, Al, W, Co, Pt, Ag, B, Th, V, Ti, Ni, Au, Ge, Si, Cr, Mo, Fe, Sn, Pd, Pb, In, Cd or Zn. The compositions of the glass substrates are described.
Patent GB-646375-A (GB)
Title: Improvements in and relating to the separation of tantalum and niobium in mixtures of their oxides
Inventor: LEEMANS JOSEPH PIERRE
IPC: C01G33/00
Filed: 1947-02-18
Abstract: Niobium is separated from tantalum in a mixture of their pentoxides by selectively reducing the niobium to its tetroxide with hydrogen, for example at 900 DEG  C., followed by treatment with chlorine gas at 500 DEG  C. when volatile niobum pentachloride is formed, and eliminated, the tantalum pentoxide being unchanged. The hydrogen is preferably eliminated after the reduction by cooling to 400-500 DEG C. and sweeping the furnace with an inert gas such as nitrogen before passing in chlorine.  Specification 507,124 is referred to.
Patent GB-710906-A (GB)
Title: Improvements in intaglio printing machines
IPC: B41F9/18
Filed: 1952-02-22
Abstract: 710,906. Rotary printing-machines. SCHNELLPRESSENFABRIK FRANKENTHAL ALBERT & CIE., AKT.-GES. Feb. 22, 1952 [March 1, 1951], No. 4686/52. Class 100 (2) In an intaglio printing-machine of the kind in which the printing cylinder 3 is interchangeable and mounted in bearings received in open-ended slots 9, 10 in the machine frame side members 1, 2, where they are retained by sliding closure members 11, means are provided to carry the closure members 11 and the bearing rings 6, 7 on the machine during interchange of the printing cylinder. The carrying means comprise arms 19, 20 pivoted to each side member 1, 2. guideways 21 formed in the arms being adapted to receive ribs 13, 14 as the closure members are withdrawn from the slots. In changing the printing cylinder the closure members are withdrawn to free the bearing rings. Movement of the closure members away from the side members 1, 2, is limited by a stop 23 on each abutting one of the guideways of the corresponding arm. The arms may then be swung out of the way as shown in Fig. 3. The printing cylinder is then rolled out of the slots, the axles 4, 5 being supported on rails on a carriage moved up to the machine to receive the cylinder. The bearing rings 6, 7 are then detached from the axles 4, 5 and suspended on arc-shaped lugs 19, 20. Inking-apparatus.-A doctor blade 32 normally co-operating with the printing cylinder is removed when the cylinder is to be replaced and mounted in a pair of sockets 30, 31 provided on the machine frame.
Patent GB-555952-A (GB)
Title: Geographical map provided with movable marking means
IPC: G09B29/10
Filed: 1942-04-14
Abstract: 555,952. Maps. RADO, L. April 14, 1942, No. 4886. [Class 146 (ii)] A geographical map is provided with movable markers 3, which are held in place by magnetic means. The map may be hung over a sheet iron backing and the markers provided with small permanent magnets, or the backing may be magnetized, e.g. electrically. A number of markers may be connected together by threads &c., or a chain may be used for marking boundaries. The markers may be in the form of movable map sections having interfitting edges. The map may be in the form of a globe, in which case the markers are suitably curved. Specifications 20070/04, [Class 146], and 272,272, [Class 146 (ii)], are referred to.
Patent GB-178623-A (GB)
Title: Improvements relating to road vehicle electric lamps
IPC: F21V17/00
Filed: 1921-02-11
Abstract: 178,623. Curnow, A. J., and Howes & Burley, Ltd. Feb. 11, 1921. Lantern doors and door fittings.-In an electric vehicle lamp a detachable front is retained in position by means of resilient fastening members permanently secured to the front which extend along the interior bf the body, and detachably engage a screw-operated clamping device arranged at the rear of the body, and a removable reflector is gripped in position by adjacent parts of the front and body. When the front ring e, carrying the glass f, and with the spring members g attached to it, is placed in position over the front open end of the body a, the springs g pass through apertures h and move along the inner surface of the body until they engage behind the clamping plate b carried on a screw c which passes through the rear of the body. Around the screw, and engaging with the plate and body, is a spring d which holds the head of the screw close up to the body, and prevents the rotation of the plate b when the screw is turned. The ring e or the glass f, abuts against the turned over front of the reflector i which fits over a lip j on the front of the body. On rotating-the screw c the spring members g are pulled to the rear, thus securing the ring e and the reflector i firmly in position.
Patent GB-685557-A (GB)
Title: Improved device for transporting warp beams of looms
IPC: D02H13/28
Filed: 1950-02-25
Abstract: 685,557. Jib cranes; vehicle fittings. SPENGLER, H. Feb. 26, 1951. [Feb. 25, 1950] No. 4896/50. Class 78 (iv). Two spaced connected jibs 7 are pivotally mounted on the longer frame member 3 of a wheeled base carrying winches for raising and lowering the jibs and load. The load, e.g. a warp beam 30, is raised or lowered by cables 22 passing round head pulleys 25 and round a shaft 23 which is rotated through gearing by a shaft 18a. The jibs are luffed by a cable 12 connected to eyes 11 on the shaft 10 and passing round a shaft 13, rotated through gearing by a shaft 18. The shafts are supported in bearings on uprights 15, connected to the shorter base frame members 5. The load is deposited on brackets 31 on struts 32 connected to the base and supports 15.
Patent GB-946054-A (GB)
Title: Process for applying oxylate coatings to round wires of iron or low-alloy steel
IPC: C21D8/06
Filed: 1962-02-08
Abstract: An oxalate coating on iron or low alloy steel is formed by treating with a solution comprising oxalic acid and at least one alkene phosphonic acid containing 1 to 6 carbon atoms and/or an acid derivative thereof.  The solution may also optionally contain an accelerator, an iron salt, an activator, a phosphate, a polyphosphate and/or an acetate, and the ratio by weight of oxalic acid to alkene phosphonic acid is equal to or greater than 2:1. The phosphonic acid is preferably vinyl phosphonic acid or a semi ester and examples are given of solutions containing oxalic acid, sodium chlorate, vinyl phosphonic acid, potassium trioxalatoferrate or ferrous sulphate and an alkali metal phosphate. In another example a perlionate is used in place of the sodium chlorate and sodium acetate instead of the phosphate.  The iron or steel is first pickled in inhibited H2SO4 or HCl and then treated with the oxalate solution prior to wire drawing.
Patent GB-1380659-A (GB)
Title: Electrical capacitor
IPC: H01G4/20
Filed: 1973-01-31
Abstract: 1380659 Polyolefin laminates TORAY INDUSTRIES Inc 31 Jan 1973 [15 Feb 1972] 4945/73 Heading B5N [Also in Division H1] A dielectric spacer in a capacitor comprises a biaxially oriented isotactic propylene polymer film 3 having at least one surface laminated with a layer 3<SP>1</SP> of ethylene-propylene copolymer including 0À5 to 7À0 wt. per cent ethylene units, the surface of the copolymer layer being embossed. To form the laminate, the constituents may be co-extruded and the laminate then biaxially oriented simultaneously or successively and heat-set. Alternatively one or both the constituents may be solid and the propylene polymer film may be oriented in one or both directions prior to laminating. Layer 3 may be polypropylene or copolymers of propylene with suitable olefins. Embossing at low temperature and pressure to a roughness of 5 to 300 depressions or craters per inch is carried out using rolls or belts. The polypropylene layer 3 may be 5 to 30 Á thick and 1 to 20 times the thickness of the embossed layer 3<SP>1</SP>. The capacitor including the spaces may be impregnated with mineral oil, castor oil, cottonseed oil, silicone oil, polybutene or halogenated aromatic compounds such as chlorinated diphenyls, diphenyl ketones, benzene and pentachloronitrodiphenyl.
Patent GB-843523-A (GB)
Title: Improvements in or relating to feeding troughs for poultry
IPC: A01K39/014
Filed: 1958-02-17
Abstract: 843,523. Poultry feeding appliances. GROSSMITH, N. Feb. 12, 1959 [Feb. 17, 1958 ; Aug. 13, 1958], Nos. 5065/58 and 25958/58. Class 5(2). A feeding trough, particularly for use in connection with the poultry battery described in Specification 843,521, comprises two internal baffles 12 and 13 for the purpose of eradicating wastage of the food by preventing it from being flicked out of the trough by the birds. The complete structure may be formed of sherardised mild steel sheet, or alternatively the trough may be made of galvanised sheet iron or aluminium sheet with wooden end members 14 and baffles. The trough is located on the battery by engaging the upper edge of the wall 10 inside an abutment or slotted member of the battery and by engaging the lugs 22 behind a horizontal member of the battery.
Patent GB-576147-A (GB)
Title: Improvements in coaxial cables
IPC: H01P5/02
Filed: 1941-04-19
Abstract: 576,147. Coupling coaxial lines. GENERAL ELECTRIC CO., Ltd., and CLAYTON, R. J. April 19, 1941, No. 5086. [Class 40 (iii)] Two coaxial cables of different diameters but having the same characteristic impedance are coupled by means of coaxial coapical cones, the space between which contains a medium having a different dielectric constant from the medium occupying the cables. The dimensions of the cones are determined by the equations and where b/a is the ratio of the radii of the outer and inner conductors of the coaxial lines, Á1 and #1 are the permeability and dielectric constant of the dielectric of the coaxial lines, 2#1, and 2#2 the apical angles of the inner and outer cores respectively and Á and c the permeability and dielectric constant of the dielectric in the coupling device. The boundary surface is defined by the equation where r is the length of the radius from the common apex to the surface and r=r, for #=0.
Patent GB-402626-A (GB)
Title: Improvements relating to the production of imitation leaded lights
IPC: C03C17/00
Filed: 1933-02-18
Abstract: 402,626. Burglar alarms. FERGUSON PAILIN, Ltd., PAILIN, G., and FRANCIS, A., Buckley Street, Higher Openshaw, Manchester. Feb. 18, 1933, No. 5105. [Class 118 (i).] Imitation leaded lights adapted to sound an alarm when the window is broken are produced by roughening one or both sides of a sheet of glass in the desired parts and projecting molten lead or other metal on to the glass, the metal adhering only to the roughened parts. The deposited metal forms one or several continuous metal paths each incorporated in an external electric circuit one or more of which will be interrupted.
Patent GB-729795-A (GB)
Title: Concealed slide-fasteners
IPC: A44B19/06
Filed: 1953-02-24
Abstract: 729,795. Sliding clasp fasteners. HUG, J. Feb. 24, 1953 [March 26, 1952], No. 5201/53. Class 44. In a concealed slide fastener with hookshaped slide fastener elements designed to accommodate the thickened edge of a supporting tape, about the free legs of which slide fastener elements the tapes are wrapped and in which a slider having a triangular central abutment with a parallel-sided extension on one side of the triangle embraces the mutually opposed fastener elements laterally below the tapes, guide cheeks or guide shoulders which promote the aligning of the fastener elements during their engagement, are provided on the converging side faces of the triangular abutment and also on parallel sides of the extension. In the arrangement shown, in which the thickened edges 4 of stringer tapes 5 are secured within hook shaped fastener elements 1 which are embraced by a slider below the tapes, the slider is formed with guide cheeks 7 on the wedgeshaped abutment 8 of the slider, the guide cheeks being preferably rounded or convex in cross section and progressively diminishing in cross section towards the inner end of the abutment 8. The exit and or entry ends of the slider are flared outwardly as indicated at 11 and 12.
Patent GB-545400-A (GB)
Title: Improvements in air or gas purifiers
IPC: B01D45/08
Filed: 1941-04-23
Abstract: 545,400. Cleaning air &c. HEYWOOD COMPRESSOR CO., Ltd., and HUNT, J. A. April 23, 1941, No. 5243. [Class 8 (ii)] [Also in Groups XIII and XXIX] Compressed air or gas is separated from its liquid or solid impurities in an expansion chamber a, the air &c. entering through lateral apertures d in a tube surrounded by sleeve e, and passing out through a tubular screen f surrounded by a spaced tube g having a closed lower end and a lateral outlet aperture h. A drain valve i is opened by turning a cap on its screwed stem, and is automatically closed by a torsion spring k on releasing the cap.
Patent GB-433621-A (GB)
Title: Improvements in fitted wardrobes
IPC: A47B61/02
Filed: 1934-02-17
Abstract: 433,621. Wardrobes; garment racks. EVERITT, J., 5, Green Terrace, Rosebery Avenue, London. Feb. 17, 1934, No. 5270. [Classes 52 (i) and 52 (v)] In a wardrobe of the kind fitted at one side with a column of drawers or shelves the drawers &c. of the upper part of the column, for approximately half its height, are narrower than those below. A recess or well may be provided behind the lower drawers 14 and a pivoted arm 20 carrying pivoted bars 21 for suspending trousers may be fitted in the lower part of the wardrobe and, in the upper part, a swingable garment rack, preferably as described in Specification 428,477.
Patent GB-896940-A (GB)
Title: Healing agent for wounds of the body surface
IPC: A61K38/01
Filed: 1960-02-15
Abstract: A pharmaceutical composition for healing wounds of the body surface, in dosage unit form comprises glucosamine and/or one or more derivatives of glucosamine and a pharmaceutically acceptable carrier. Specified derivatives of glucosamine are the lower N-alkanoyl glucosamines, e.g. N-acetyl glucosamine; phosphorylated glucosamines, e.g. N-acetyl glucosamine - 6 - phosphate or glucosamine - 6 -phosphate; and salts of glucosamine with pharmaceutically-acceptable acids, e.g. hydrochloric, phosphoric, citric, gluconic, acetic or malic acid. Additional therapeutic agents specified are sources of high energy phosphorus, e.g. phosphoenolpyrivic acid and adenosine phosphates such as the mono and dephorphates; tetracycline, oxytetracycline, ascorbic acid and tyrosine.  The compositions may be administered locally, orally in the form of suspensions, inaqueous glycols or sugar solutions, tablets or capsules and in particular parenterally in the form of an intravenous injection employing isotonic saline solution as carrier.  Specification 819,122 is referred to.  Reference has been directed by the Comptroller to Specification 856,493.
Patent GB-588681-A (GB)
Title: Improvements in bayonet fittings for electric lamp holders and like couplings
IPC: H01R33/46
Filed: 1945-03-02
Abstract: 588,681. Lamp-holders. CLARK, C. W. March 2, 1945, No. 5282. [Class 38 (i)] The bayonet socket of a coupling, e.g. a lamp-holder, is reinforced by a metal strip or strips 1 bent to form a tube, the meeting edges of which are dovetailed, and may be brazed or welded, together at 3. The reinforcement is moulded into the plastic body 6 of the socket and has perforations 2 which allow the body material to cover both sides of the reinforcement and hold it more securely. The reinforcement may be made of halves with dovetailed edges.
Patent GB-1020117-A (GB)
Title: Apparatus for applying liquid developer to electrostatic images
IPC: G03G15/10
Filed: 1964-02-07
Abstract: 1,020,117. Apparatus for applying liquid developer to electrostatic images. RADIO CORPORATION OF AMERICA. Feb. 7, 1964 [Feb. 20, 1963 (2)], No. 5344/64. Heading G2H. An electrostatic image on a sheet 13 is developed with liquid applied by an applicator head 11 moved over the sheet by a reversible electric motor 17. Developer is prevented from escaping during application by an air curtain supplied by a compressor 23 through tubes 25 connected to a groove 39. A rectangular channel 37 connected to a funnel 22 by holes 61 and pipes 27, 29 provides a return path for developer to the funnel. A central channel 35 is connected with the funnel 22 for the supply of developer. In another embodiment, Fig. 4 (not shown) the applicator head 11<SP>1</SP> is curved for cooperation with a roller 71 supporting a web 13<SP>1</SP>. In another embodiment, Figs. 5 and 6 (not shown) a terminal 85 connects a metal plate 101 to a bias voltage supply 83, such that plate 101 serves as a bias electrode to prevent unwanted deposition of toner in background areas. The developer may be toner particles dispersed in an insulating liquid.
Patent GB-692036-A (GB)
Title: Improvements in or relating to sealing glands for pressure vessels
IPC: F16J15/16
Filed: 1950-03-03
Abstract: 692,036. Stuffing-box substitutes. MORRISON, J. L. M., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 5, 1951 [March 3, 1950], No. 5423/50. Class 122(v). A sealing gland for an operating rod 10 passing into a high pressure vessel 11 comprises a rod sealing sleeve 15 surrounded and engaged by a sealing ring 13 of resilient material axially supported by retaining members 12, 14 of which the one 12 disposed inwardly of the vessel is rigidly secured to the inner end of the sleeve and affords an end surface subject to the pressure in the vessel of larger area than its area of contact with the sealing ring 13. The sealing sleeve 15, preferably of metal, is integral with the retaining member 12 and the other retaining member 14 is screwed into the vessel wall but may be integral therewith, the gland then being assembled from the interior of the vessel. The sealing ring 13 may be of natural or synthetic rubber or polyvinyl chloride.
Patent GB-1539624-A (GB)
Title: Laser control system
IPC: H04B10/50
Filed: 1976-02-11
Abstract: A description is given of an arrangement for monitoring both the depth of modulation and the optical power of a light source, e.g. a GaAs laser. Feedback signals (PO, PM) are generated which correct the level of the threshold value bias (PO) and the depth (PM) of modulation of the laser, in order to eliminate the unfavourable effects of ageing and temperature. The arrangement monitors the optical output power when a portion is branched off from the light signal emerging from the surface of the laser at the front or at the rear and is detected by means of a photodiode (1). <IMAGE>
Patent GB-817009-A (GB)
Title: Apparatus for estimating the time remaining before a quantity of fluid has decreasedto a predetermined value
IPC: G01F9/00
Filed: 1956-02-22
Abstract: 817,009. Electric analogue calculating systems. BENDIX AVIATION CORPORATION. Feb. 22, 1956 [Feb. 25, 1955], No. 5526/56. Class 37. [Also in Group XXXVIII] . A quotient-computer for use in an electrical indicating system (see Group XXXVIII) comprises a rotatable transformer 21, preferably of the linear-output type such as that disclosed in Specification 769,038, [Group XXXV], the primary (rotor) winding of which is fed with a first signal E 1  representing the divisor, the output of the transformer 21 being compared with a second signal E 2  representing the dividend, the unbalance current being amplified at 31 and supplied to the control winding of a 2-phase motor 35 which drives the transformer rotor and the pointer of an indicating instrument 40. At balance, E 2 =KAE 1'  where K is a constant and A is the angular displacement of the transformer rotor from its position when the transformer output is zero; since the quotient is indicated by the instrument 40. In a modification (Fig. 2, not shown), the output of the transformer and E 2  are connected in parallel relationship and the input to the amplifier is connected between a common, grounded, output line and the interjacent point of two resistors connected in series in the other output line. Specifications 737,281, 795,721, 795,722 and 795,723, [all in Group XXXVIII], also are referred to.
Patent GB-128878-A (GB)
Title: Apparatus for the Calculation of the Thermal Efficiency, and other Data Involved Therein, of Steam Generating Plant
Inventor: CROMPTON JAMES
IPC: G06G1/02
Filed: 1919-03-06
Abstract: 128,878. Crompton, J., and Gallagher, W. March 6, 1919. Slide-rules. - A computing - apparatus for determining the thermal efficiency of steamgenerating plant from observed readings of boiler pressure, and feedwater and steam temperatures, comprises a chart E slidable vertically beneath a horizontally sliding scale A and a fixed scale B. The horizontal lines on the chart denote boiler pressures or corresponding temperatures of saturated steam, the vertical lines represent heat values of superheated steam, and the curves refer to degrees of superheat. The factor of evaporation resulting from the use of the above chart and' scales is utilized to obtain the efficiency by means of the logarithmic sliding and fixed scales C, D graduated as shown.