baber/WOPTO huggingface dataset:
Patent GB-928081-A (GB)
Title: Improvements in and relating to the electrodeposition of gold
Inventor: BENHAM REGINALD ROBERT
IPC: C25D3/48
Filed: 1961-04-28
Abstract: 928,081. Electrodepositing gold. JOHNSON, MATTHEY & CO. Ltd. April 3, 1962 [April 28, 1961], No. 15469/61. Class 41. In electrodepositing bright hard gold, the electrolyte comprises an aqueous solution of an alkali metal-gold cyanide, free alkali metal cyanide and a compound, other than the chloride, of cadmium or zinc, e.g. the cyanide, oxide, acetate or sulphate. In examples the electrolyte comprises about 15 gs/l. potassium gold cyanide, at least 70 gs/l. potassium cyanide, 0.5-5 gs/l. of the compound and 0.5-5 mls/l. of a sulphonated oil, e.g. turkey red oil. The current density is 0.5-5 amps/square foot and the temperature 25-55‹ C. Gold of substantially 24 carat quality can be obtained but at current densities higher than 5 amps/square foot there may be alloying and loss of brightness. Gold or stainless steel anodes may be used and the gold may be deposited on Cu, brass, Ni, Ni-Sn, Ag or Au.
Patent GB-1033615-A (GB)
Title: Textile fibre dyeing
Inventor: WARD JAMES STANLEY
Filed: 1962-04-24
Abstract: Fibres formed from acetone-soluble copolymers of acrylonitrile and vinylidene chloride are dyed with a complex formed by reacting an acid dye or a basic dye with a surface-active agent of opposite ionic character which complex is more soluble in the fibre than the dye itself.  The formation of the said complex is preferably effected by incorporating the dye and surfactant in the same aqueous dyebath.  A number of suitable dyes and surfactants are listed.  Dyeing may be carried out at 70-120 DEG C., if desired in the presence of an organic carrier, e.g. chlorobenzene and diethyl phthalate.  When a basic dye is used the dyebath may be acidic, e.g. have a pH below 6. Examples are given of dyeing a copolymer having equal proportions of the two monomers.
Patent GB-1094111-A (GB)
Title: All weather landing system
Inventor: OLAH GEORGE
IPC: G01S1/02
Filed: 1964-04-14
Abstract: 1,094,111. Gyroscopic apparatus. ELLIOTT BROTHERS (LONDON) Ltd. April 14, 1965 [April 14, 1964], No. 15469/64. Heading G1C. An aircraft landing system comprises an inertial navigation system which is controlled by signals received from an I. L. S. system up to the inner limit of this latter system, the landing approach then being operated as a pure inertial system. Two embodiments are described, and in both of these accelerometers are used to produce signals proportional to range acceleration and to azimuth and elevation cross-track acceleration. These latter two are integrated to provide cross-track velocity and distance signals. In the first embodiment acceleration signals are derived from three orthogonally disposed accelerometers carried on a complete gyro stabilized platform, the signals being resolved along the directions given by runway heading and glide slope angle to give the crosstrack accelerations. A duplicate system comprising two self-monitored inertial equipments are provided with automatic change-over in the event of a failure. In the second embodiment acceleration components are derived from altitude information from existing directional and vertical gyros, and a slaved platform is provided with its outer gimbal set to bank altitude, its middle gimbal to pitch altitude, and its inner gimbal to the desired heading, and the inner gimbal represents a horizontal platform carrying the accelerometers which measure the cross-track accelerations directly without the need for subsequent resolution. The platform may carry an integrating gyro, whose output is used to correct the vertical gyro or alternatively a control gyro to maintain platform altitude may be provided. Self-monitoring arrangements are also described. Control of the inertial system by I. L. S. signals is also described with automatic change-over to a pure inertial system when the I. L. S. inner limit is reached. Range indications may also be checked at the run-way outer and middle markers.
Patent GB-1322652-A (GB)
Title: Feed mechanism for optical displayer
IPC: G03B31/00
Filed: 1971-07-23
Abstract: 1322652 Cinematography DEJUR-AMSCO CORP 23 July 1971 [24 Sept 1970] 15507/72 Divided out of 1322651 Heading G2E The subject matter of this Specification is substantially the same as in 34749/71 and 15508/72 but the claims relate to the film feed claw whose movement is controlled by the circuitry claimed in Specification 1322653. The film claw 200 has a pin 210 riding in a slot in arm 216 having an end 222 whose movement can be prevented by a stop 230 moved by electromagnet 82'. The electromagnet 82' is normally de-energized so that the stop 230 prevents the claw 200 from advancing the film, the stop 230 being urged into the blocking position by spring 226 acting on pin 228. The electromagnet 82' is energized for a period of shorter duration than the time required for one feed and return cycle of the claw mechanism. Thus during any operation the claw, in the last cycle thereof the stop 230 will rest against end 222 after de-energisation of the electro-magnet 82' so that the stop 230 can return to its blocking position only when the cycle of the claw movement has been completed.
Patent GB-1008591-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B25/00
Filed: 1963-04-22
Abstract: 1,008,591. Two-stroke engines. KREIDLERS METAL-UND DRAHTWERKE G.m.b.H. April 22. 1963 [April 21, 1962], No. 15727/63. Heading FIB. In a two-stroke crankcase compression engine, the crankcase admission port 3 is controlled by the lever edge 5c of the piston and by an additional port 6 in the piston wall which port is open on the upstroke of the piston but is closed on the downstroke by a valve member 9 projecting from the small end of the connecting rod.
Patent GB-1488417-A (GB)
Title: Superconductive switch
IPC: H01L39/20
Filed: 1975-04-16
Abstract: 1488417 Superconductor devices COMPA. GNIE GENERALE D'ELECTRICITE 16 April 1975 [18 April 1974] 15758/75 Heading H3X A superconductive switch comprises a non- inductive coil 4 formed by winding a doubled superconductive tape 16, 26 on an annular insulating support 6, the coil being immersed in a cryogenic fluid such as helium in a vessel 2 and having the facing tape surfaces each overlaid by a strip 18, 22 of a material permeable to the cryogenic fluid. An annular control winding 34 encircling the coil 4 controls its superconductive properties. The doubled superconductive tape 16, 26 is supported by a wider strip 14, 24 of ethylene glycol polyterephthalate and may consist of a 35%-65% alloy of lead and bismuth. Each permeable strip 18, 22 consists of a mesh of glass fibres, for example, the two strips being spaced apart by a strip 20 formed of the same material as the support strips 14, 24. It is stated that the provision of permeable strips 18, 22 reduces the switching time of the arrangement.
Patent GB-1059206-A (GB)
Title: Improvements in or relating to air knives
IPC: D06B3/10
Filed: 1965-04-13
Abstract: 1,059,206. Web coating apparatus. E. I. DU PONT DE NEMOURS & CO. April 13, 1965 [April 13, 1964], No. 15818/65. Heading D1L. An air knive for smoothing and removing excess of a liquid layer coated on web materials comprises an elongate chamber 22 formed with a gaseous fluid supply inlet and a longitudinal exit slot 23, a pair of lip members 24 having their inner ends adjacent said slot and secured to the chamber, at least one of said members being slidably secured, and having their outer ends forming a narrow orifice 25, and a row of adjusting bolts 36 extending between the lip members, rotation of which adjusts the width of the orifice 25. The lip members 24 are preferably secured by screws 34 which pass through elongated holes to allow the lip members to be adjusted and the bolts 36 have each end threaded in the same direction but at a different pitch to give micrometric adjustment of the orifice 25. In one application, Fig. 1 (not shown), the air knife is used in conjunction with coating apparatus in which a moving web 11 passes continuously around a guide roll 12 there being associated with this roll, an arcuate coating shoe 13 to which coating material is fed from a reservoir 16 via a slot 15. Excess coating material flows over the edges 17, 18 of shoe 13 and returns to a trough 21.
Patent GB-451380-A (GB)
Title: Improvements in or relating to trolley heads for electrically propelled vehicles
IPC: B60L5/08
Filed: 1935-05-31
Abstract: 451,380. Trolly heads for electric vehicles. MORGAN CRUCIBLE CO., Ltd., and COLBECK, A. G. A., Church Road, Battersea, London. May 31, 1935, No. 15937. [Class 104 (iii)] A trolly head comprises an insulated guide wheel or skid 2 mounted in the swivelling support 5 and engaging the conductor 4. A carbon &c. bow collector 12 is mounted in a carrier 3 pivoted at 10 on the head and pressed upwards by a spring 11 abutting on an arm 6 on the head and acting independently of the main spring which acts on the trolly pole. By this arrangement the bow collector shares in the lateral movements of the trolly head and presents a larger surface to wear.
Patent GB-254327-A (GB)
Title: Receiving apparatus for electric oscillatory signals
IPC: H03F3/48
Filed: 1926-06-24
Abstract: 254,327. Aigner, F. June 24, 1925, [Convention date]. Thermionic heterodyne receivers. - Multiple reflex amplification is rendered practicable by changing the frequency after each amplification, the series of frequencies employed for this purpose being derived by heterodyning with successive harmonics of the local generator. By choosing the frequencies in this manner, howling due to undesired heterodyne action can be avoided. The switch P enables a loosely coupled valve H2 to be inserted in series with the valves H for the purpose of eliminating atmospherics. Superheterodyne multiple amplification. Incoming signals are heterodyned to produce an oscillation of constant high frequency N1 which is applied through the transformer T1 to the high frequency amplifier H. The local oscillator G generates a fundamental frequency N with harmonics, the fundamental and the first three harmonics being respectively selected by the tuned coupling circuits K1, K2, K3, K4, and combined with the incoming frequency N1 to produce a series of beat oscillations of frequencies N2. N3, N4, N5, which are successively amplified by the valve H. The generator frequency N is made equal to four times the lowest difference frequency, so that in this case N = 4 N5 : then the remaining differences N4, N3, N2, N1 are odd harmonics of N5, which forms the fundamental of the series of difference frequencies. Thus the frequency N1, derived through the transformers T6, combines with the harmonic 4 N, derived through the circuit K4, to produce a frequency N2, which appears in the output of the modulator M1, is selected by the doubly-resonant transformer T2, and amplified by the main amplifier H. The amplified oscillations of frequency N2 are then selected by the doubly resonant transformer T7, combined with the harmonic 3 N from the circuit K3, and applied to the modulator M2, the resulting beat oscillations of frequency N3 being selected by the doubly resonant transformer T3, and amplified by the main valve H. The amplified oscillations of frequency N3 are in a similar manner combined with the harmonic 2N to produce a frequency N4, which after amplification by the main valve H, combines with the fundamental N to produce a beat frequency N5 which is amplified by the valve H and passed through the transformer T5 to the wireless receiver J. Thus the modulators M1, M2 extract the beat frequencies arising from the harmonics of odd and even number respectively, and the valve H serves to amplify each beat frequency in succession. Reaction coupling. Reaction may be effected bv introducing the coupling coils S1, S2, shown in dotted lines, between the circuits of the modulators M1, M2.
Patent GB-781979-A (GB)
Title: Improvements in and relating to vacuum deep-drawing of thermoplastic sheet material
Inventor: NORTHMORE RAYMOND
IPC: B29C51/10
Filed: 1954-05-29
Abstract: 781,979. Vacuum deep-drawing of thermoplastic sheet material. HYDRO - CHEMIE AKT.-GES. Aug. 26, 1955 [May 29, 1954], No. 15980/54. Class 87(2). The maximum vacuum is not applied to the mould M until the sheet material S is about to make contact with the surface of the mould. A vacuum pump VP withdraws air from the mould by way of pipes P<SP>1</SP>, P<SP>2</SP>. At the beginning of the operation, whilst the sheet material is being heated, valve V1 is closed and valve V2 is open, whereby a substantial vacuum is maintained in a reservoir tank R. When the sheet has been heated sufficiently valve V1 is opened, whereupon the air in the mould expands partly into the reservoir to decrease the vacuum in the latter. Before the material makes contact with the inside of the mould, valve V2 is closed to shut off the reservoir from the circuit and the pump is left to apply its full exhauster effect to the pipe P2 only. When the material has been drawn into intimate contact with the mould valve V1 is closed and V2 is opened to re-establish vacuum in the reservoir.
Patent GB-480643-A (GB)
Title: Improved photographic lens system
IPC: G02B9/34
Filed: 1937-06-09
Abstract: 480,643. Lenses. LEITZ GES., E. June 9, 1937, No. 16053. Convention date, Aug. 15, 1936. [Class 97 (i)] A photographic lens system wherein two collecting members enclose two dispersing meniscus members with concave surfaces facing each other, at least the meniscus member on the image side containing a cemented surface and both collecting members being biconvex, all four members being separated by air gaps, is characterized in that at least the collecting member on the object side contains a cemented surface which is concave towards the object side and is so highly dispersing that a light pencil arriving parallel to the axis of the system is overcorrected with regard to its intersection distance in relation to the paraxial ray after refraction at the first and second surfaces. The front meniscus and the rear collecting members may be simple lenses. Data are given for one example.
Patent GB-714541-A (GB)
Title: Method of and materials for producing paint-bonding surfaces on metal
IPC: C23C22/37
Filed: 1952-06-26
Abstract: Metal surfaces, particularly ferrous, zinc and zinc alloy surfaces, are treated with a solution containing 0.05-17 per cent. of chloride or bromide, at least 0.025 per cent. of complex fluoride, the complex fluoride content being 0.5-2 times the chloride or bromide content, and chromate in quantity 0.05-5 times the total quantity of chloride or bromide and complex fluoride, the solution having a pH of 0.8-5.5 and being substantially free from phosphate and arsenate ions; the chloride or bromide content being calculated as ammonium chloride; the complex fluoride content, on the basis of equivalent fluorine content, as ammonium silicofluoride; and the chromate content as CrO3.  The complex fluoride may be introduced as ammonium or sodium silicofluoride, fluoboric acid, ammonium fluozirconate, sodium fluotitanate or fluostannic acid, the chromate as chromic acid, alkali chromate or dichromate and the chloride as common salt, ammonium chloride or hydrochloric acid.  Nitrates and acetates may be present.  The metal surface may subsequently be rinsed with water or an acid chromate rinse.  U.S.A. Specifications 2,114,151 and 2,276,353 are referred to.
Patent GB-227730-A (GB)
Title: A projectile for use against submarines
IPC: F42B30/08
Filed: 1924-07-04
Abstract: 227,730. Soc. J. Cockerill, and Ternstr÷m, E. July 4, 1924. Projectiles.-An anti-submarine projectile has an ogival head provided with a tubular or ring- like extension T connected to the head by ribs K and formed with a sharp front edge. The ribs are preferably helicoidal.
Patent GB-1449960-A (GB)
Title: Preparation of high viscosity index lubricating oil
IPC: C10M169/00
Filed: 1974-04-11
Abstract: 1449960 Lubricating oils EXXON RESEARCH & ENG CO 11 April 1974 [8 May 1973] 16146/74 Heading C5E The viscosity index of a hydrocarbon lubricating oil base stock, having a viscosity of 35 to 100 SUS at 210 F. and a viscosity index of 50-95, is increased by halogenating the base stock to the average extent of 0À1 to 1À3 atom of halogen per molecule of the base stock and reacting the halogenated base stock with 20 to 200 wt. per cent of linear aliphatic alpha olefin having 2 to 40 carbon atoms in the presence of an alkylation catalyst of the Friedel Grafts type. In examples an S.A.E. 10 grade phenoltreated paraffinic distillate of V.I. 92 is treated in the liquid phase with chlorine in the presence of tungsten light and then reacted with n-decene, n-hexadecene or n-octadecene at 0 F. using aluminium chloride as catalyst; the product oils are hydrogenated over a nickel catalyst at 400 F. and 800 p.s.i.g. to remove residual chlorine.
Patent GB-1113581-A (GB)
Title: Profile machining device
IPC: B23Q35/10
Filed: 1964-04-18
Abstract: 1,113,581. Turning. D. E. C. MAIR. 14 July, 1965 [18 April, 1964], No. 16153/64. Headings B3B and B3T. In a copying machine, a tool carrier 6 is urged against a master 11 so that as the tool carrier and its support 3 are relatively moved to take a cut, the tool moves laterally. The carrier and support may be an attachment for a tailstock or turret. When the support is moved forwardly, the tools 10 in holders 9 contact and face the end of the work 2. As the carrier 6 moves back on its support, a tapered part 13 of the support moves slides 12 carrying the tool-holders 9 outwardly against springs 19 until followers 20 move off the end face of the fixed master 11 and slide along the portion 11b. As each shoulder on the master is reached, the holder 6 moves further back. A hand lever may be provided on the support to enable the tools to be moved in for a portion of reduced diameter. Each tool-holder 9 can be adjusted about a pivot 21 by a screw 23 and locked by a screw 25. Adjustable and pivotable stops 27 may limit the minimum distance between the tools. A roughing cut may be made by offsetting the master, e.g. by mounting it on the saddle and moving the saddle laterally between outs. The master may also be moved laterally to hold the tools clear of the work.
Patent GB-1110372-A (GB)
Title: Improvements relating to alcohol soluble colour salts and their use
IPC: C09B69/06
Filed: 1966-04-13
Abstract: In Example 19 a nitrocellulose lacquer comprises nitrocellulose, butanol, poly-(butyl acrylate) resin in ethanol and ethylacetate and alcohol-soluble colour salt produced in Example 1 of formula <FORM:1110372/C3/1> Example 20 provides a printing ink which comprises a condensation product of polyamide resin, ester gum and dehydrated castor oil, water, benzine, ethanol, isopropanol, phenolic resin, and coconut oil fatty acid di-b -hydroxyethylamide which printing ink contains the colour salt of Example 12.  In both of the above Examples 19 and 20 further alcohol-soluble colour salts of the invention may be employed.ALSO:Alcohol-soluble dyestuff salts are obtained by treating a cationic dyestuff which contains no sulphonic acid groups with a sulphonic acid (or salt thereof) of formula <FORM:1110372/C4-C5/1> in which R1 is a low alkyl (1-6 carbon atoms) or aralkyl radical, R2 is an alkyl, cycloalkyl or aralkyl radical and n is 1 or 2, the reaction advantageously being performed in aqueous solution at 20-80 DEG  C., the alcohol soluble product being filtered off or extracted with organic solvents.  The examples provide di- and tri-arylmethane, xanthene, azo and methane dyes. The alcohol-soluble colour salts of the invention have the general formula <FORM:1110372/C4-C5/2> in which the symbols are as above and A\sJ is the radical of a cationic dyestuff containing no sulphonic acid groups.
Patent GB-562471-A (GB)
Title: Improvements in or relating to containers for medicinal preparations
IPC: A61J1/00
Filed: 1941-12-15
Abstract: 562,471. Containers for menthol &c. LUNE, C. Y., and CHEE, L. Y. Dec. 15, 1941, No. 16171. [Class 18] [Also in Group VI] A container for menthol, &c. comprises a base 1 carrying the menthol, &c. 2 and a detachable body 3 perforated at 10, 11, the container being closed by a cap 4, which may also be secured to the end 9 of the base. The end 9 of the base may also serve as a temporary mounting for the body portion.
Patent GB-203769-A (GB)
Title: Improvements in and relating to liquid level indicators
IPC: G01F23/16
Filed: 1922-06-12
Abstract: 203,769. Maccallum, J. June 12, 1922. Indicators actuated by pressure of head of liquid.-In liquid level indicators of the kind in which an air chamber is arranged at the bottom of the liquid container and is in communication with a pressure gauge air being caused to enter the air chamber to expel all liquid therefrom, a cup surrounding the lower portion of the air chamber is provided with ducts between the chamber and cup to admit liquid from the container below the bottom of the cup and so form a liquid seal. The pressure chamber 29 is embraced by the cup 19 gripped between locking-rings 14, 17. A tube 38 with a flared and apertured mouth extending above the level of the, liquid in the tank permits liquid to be splashed within the tube 38 and conveys it together with some entrapped air beneath the shield 23. This entrapped air passes through a passageway 26 in the shield 23 and finds its way through openings 34 in the bottom 31 of the pressure chamber. The liquid in the tank passes through openings 37 and also through the passages 30 and forms a liquid seal for the air beneath the bottom of the pressure chamber. In the modification shown in Fig. 4, the draw-off tube 69 communicates by way of the passage 72 with the space beneath the shield 64 provided with openings 73 the, combined area of which is less than the area of the pipe 74 the mouth of which extends above the level of the liquid in the tank. When the liquid is withdrawn faster than it is replaced by the tank, a temporary partial vacuum will be set up beneath the shield which causes air to be drawn downwards through the pipe 74. In a further modification, the pressure pipe 89, Fig. 6, is adjustably secured in the closure ring 86 and communicates with the pressure chamber 94, and the funnel 109 of the splash tube 106 is carried by the tube 89.
Patent GB-569829-A (GB)
Title: Improvements in or relating to hydraulic control valves
IPC: F16K11/07
Filed: 1943-10-04
Abstract: 569,829. Valves. INTEGRAL, Ltd., (formerly INTEGRAL AUXILIARY EQUIPMENT, Ltd.), and WORLIDGE, R. F. Oct. 4, 1943, No. 16241. [Class 135] A hydraulic control valve comprises a piston fitted closely within a liner which is of equal coefficient of expansion and is a loose fit in the valve body, leakage along the outside of the liner being prevented by elastic packing rings which are compressed longitudinally by spacing sleeves. The piston 5, with two lands 6, 7, slides in a pair of liners 8, 9 fitting loosely in the valve body 1. The packing rings 10, 11, disposed in pairs on opposite sides of ports 2, 3, 4, and of annular spacing sleeves 12, 14, are compressed by covers 16 engaging flanges 15 on the liners and tightened by bolts.