baber/WOPTO huggingface dataset:
Patent GB-584691-A (GB)
Title: Production of improved interpolymers of vinyl chloride and an ethylenedicarboxylic acid ester
IPC: C08K5/47
Filed: 1944-08-18
Abstract: A mixture which comprises vinyl chloride/unsubstituted ethylene dicarboxylic acid ester interpolymer, elemental sulphur or a sulphur-liberating compound, a rubber vulcanization accelerator, and an oxide of a metal selected from Group II of the Periodic Table is heated for at least 15 minutes at a temperature of at least 100 DEG C.  By the term "sulphur - liberating compound" is meant any compound which liberates sulphur at the temperature of the process and this sulphur may be liberated by the rubber vulcanization accelerator itself.  Specified accelerators are piperidinium pentamethylene dithiocarbamate, hexamethylene ammonium hexamethylene dithiocarbamate, diphenyl guanidine, the zinc salts of mercaptobenzothiazoline, and thiuram tetrasulphide type accelerators such as di(diphenylethyl-, tetraethyl-, tetrabutyl- and dipentamethylene-, thiuram tetrasulphide.  Any Group II metal oxide may be used but zinc oxide is preferred, while magnesium, calcium, strontium, barium and mercuric oxides are also specified.  Specified esters are the dimethyl, diethyl, dipropyl, diisopropyl, dibutyl, disecbutyl, diisobutyl, dihexyl, dicyclohexyl, didecyl and didodecyl esters.  The preferred amount of sulphur is 1 per cent, of accelerator between 0.25 and 5 per cent, and of metal oxide between 3 and 5 per cent.  Various fillers may be added, e.g. carbon black, clay, calcium carbonate and starch, and specified plasticizers are dibutyl phthalate, acetylated castor oil, tricresyl phosphate and di(butoxyethyl) sebacate.  In examples the following mixtures are heated: (1) vinyl chloride/diethyl fumarate, methoxyacetylricinoleate, carbon black, sulphur, 2-mercaptothiazole and zinc oxide; (2) vinyl chloride/diethyl fumarate, di(butoxyethyl) sebacate, dipentamethylene thiuram tetrasulphide, carbon black and zinc oxide; (3), as in (2) with the addition of sulphur; (4) as in (3) but replacing the tetrasulphide by hexamethylene ammonium hexamethylene dithiocarbamate; (5), as in (3) but replacing the tetrasulphide by diphenyl guanidine; (6) and (7) vinyl chloride/dimethyl maleate, di(butoxyethyl) sebacate, 2-mercaptothiazoline, carbon black, sulphur and zinc oxide.
Patent GB-241971-A (GB)
Title: An improvement in variable electric condensers
IPC: H03J3/20
Filed: 1924-07-01
Abstract: 241,971. Watkins, J. H., Watkins, E. B., and Dubilier Condenser Co., Ltd. July 1, 1924. Tuning-apparatus, construction of.-A variable condenser for tuning wireless &c. circuits comprises two simultaneously-variable units of unequal capacity one of which is adapted to be permanently connected in parallel with an inductance and the other being adapted to be changed over from series to parallel with the inductance, the arrangement being such that progressive tuning from below the natural wave length of the circuit to above that wave length may be obtained. The condenser comprises two sets of fixed plates 20, 21 supported so as to be insulated from each other and connected to separate terminals 17, 18 the two sets co-operating respectively with two sets of moving plates 22, 24 mounted on a common spindle 9 connected by a flexible metallic strip to a terminal 19. Fig. 8 shows the condenser 25 applied to tuning an aerial circuit in which a two-way switch 26 is employed for connecting the capacity between the terminals 17, 19 in series or parallel with the inductance 29 at will, whilst the capacity between terminals 18, 19 remains permanently connected across the inductance. With the switch in the " parallel " position, the wave length may be reduced until the plates of both condenser units have been fully disengaged and on changing the one unit over to series connection to obtain still lower wave lengths, the plates of the other unit which remains in parallel with the inductance may be again engaged. The relative dispositions of the two sets of the moving plates with respect to their fixed plates and the maximum capacities of the two units are so chosen that there is no gap or discontinuity in the tuning range on changing over from series to parallel position. The fixed plates may be oppositely arranged on separate supports as shown in Fig. 7, or they may be arranged in line with each other on aligned supports connected together by insulating bushes. The switch for changing over from the series to the parallel position may be mechanically combined with the condenser and so arranged as to be automatically operated by movement of the condenser spindle.
Patent GB-496960-A (GB)
Title: Improved means for controlling the electrode feeding mechanism of direct current electric arcs
IPC: H05B31/00
Filed: 1937-06-08
Abstract: 496,960. Automatic control systems. STEVENS, S. A., and WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. June 8, 1937, No. 15902. [Class 38 (iv)] Arcs.-In an electrode feed device for direct-current arc lamps, the winding of a relay for controlling the feed-mechanism is connected in a circuit which includes the arc and an auxiliary source of direct current voltage which is unaffected by variations of the internal impedance of the arc. The Figure shows an arc 1 supplied from an alternating-current source through a rectifier and control device 2. The winding of the relay 5 controlling the feed-mechanism is connected to a variable point 6 of a resistance 4 connected across the terminals 3 of a constant-voltage supply. This last may be derived from the same source as the arc supply through a separate transformer and rectifier.
Patent GB-1191583-A (GB)
Title: Catalyst for Oxychlorination.
IPC: C07C17/15
Filed: 1968-04-02
Abstract: 1,191,583. Niewland catalysts. FMC CORP. 2 April, 1968 [3 April, 1967], No. 15908/68. Heading B1E. [Also in Division C2] Niewland catalysts comprise (a) cupric chloride (b) Li, Na or K chloride, (c) neodymium chloride and (d) SiO 2  gel having a surface area of at .least 150 m<SP>2</SP>/gm and an average pore size of at least 60. The catalysts may be prepared conventionally e.g. by impregnating the appropriate SiO 2  gel with a solution of mixed chlorides. The catalyst must contain at least 1.5% total of (a), (b) and (c) on the carrier and ratio (b) to (a) = 0.6:1 to 3:1 and (c) to (a) at least 0.4:1.
Patent GB-728046-A (GB)
Title: Improvements in yarn carriers of knitting machines
Inventor: BENTLEY PERCIVAL ARTHUR
IPC: D04B15/54
Filed: 1951-07-05
Abstract: 728,046. Knitting-machines; yarn supply. COTTON, Ltd., W. July 7, 1952 [July 5, 1951], No. 15938/51. Class 74 (2). At the lower end of a strip-like yarn carrier 1 a yarn feed tube 8 is removably held, by means or a squared or flat-sided part 10, against rotational and axial movement, in a cleft 9 which may be opened, to release the tube, by axial rotation of an oval section tool in the cleft. The exit end of the tube may be chamfered to cooperate with sinkers, or left square so that the tube may be rotated through 90 degrees, as necessary, to present a new wearing part to the yarn. The cleft 9 may taper and the narrow dimension of the tool be such as to ensure that it can be used only in the widest part of the taper. Specification 728,070 is referred to.
Patent GB-292533-A (GB)
IPC: B64C35/00
Filed: 1928-05-31
Abstract: 292,533. Dornier-Metallbauten Ges., and Dornier, C. June 21, 1927, [Convention date]. Drawings to Specification. Tanks, arrangement of.-In order to distribute the weight of the driving fuel of a seaplane as uniformly as possible over the floor of the float and reduce stresses on alighting, the fuel is carried in a tank or tanks shaped to fit the float as closely as possible with an interposed elastic filling to distribute the pressure. This filling extends also between the lateral walls of adjacent tanks. Where the framing of the float precludes the use of tanks conforming to the shape of the outer covering a thicker layer of elastic filling- may be used to enable the tanks to extend over the framing.
Patent GB-973135-A (GB)
Title: Improvements in or relating to knock-out structures
IPC: H02G3/08
Filed: 1963-04-23
Abstract: 973,135. Knock-out structures; junction boxes; switch cases. HOUDAILLE INDUSTRIES Inc. April 23, 1963 [May 14, 1962], No. 15986/63. Headings H2B and H2E. A knock-out structure in a sheet of material for use with an electrical wiring box or switch housing comprises a central disc 12, coplanar with sheet 11, and an undulating, annular member 13, its inner or outer or, as shown, both peripheries being defined by continuous lines of severance 14 and 15. The undulations protrude from the disc 12 by an amount less than the sheet thickness, and undulations 16, 18, 20 have a combined arcuate length greater than that of undulations 17, 19 and 21. The disc 12 may be removed from the sheet by a sharp blow from the illustrated side, however if the disc 12 is struck from the opposite side the disc 12 and annular member 13 fall out as a single unit. In a second embodiment, Fig. 4 (not shown), only the outer periphery of the annular member is severed and the arcuate lengths of undulating members protruding on opposite sides are equal. In this embodiment the whole unit comes out regardless of the direction of the blow. These two embodiments may be combined to give an assembly with a central disc and a number of concentric annular members so that according to the direction of the blow the appropriate number of members are removed to give a hole of specified size.
Patent GB-791727-A (GB)
Title: Improvements in or relating to water heaters
IPC: F24H1/18
Filed: 1956-05-23
Abstract: 791,727. Hot-water boilers; submersible heaters. ZANUSSI, A. May 23, 1956 [May 23, 1955], No. 15987/56. Class 64(1) A heater 6 for a water tank 1 comprises a conduit 7 which communicates at one end with a conduit 8, the conduits being so formed that hot gases may ascend the conduit 7, and after reversing their direction of flow, pass into the conduit 8 from the bottom of which they escape. The gases are conveyed to a discharge conduit 15 fitted with a damper 16. Alternative arrangements for the conduit 15 are shown at 17, 18 and 19. The tank 1 is provided with an insulating layer 2, an outer shell 3, an inlet pipe 4 and an outlet pipe 5. The heater 6 may be fitted with a gas burner and may also be applied to instantaneous or semi-instantaneous water heaters.
Patent GB-767587-A (GB)
Title: Improved process for refining petroleum fractions
IPC: C10G27/10
Filed: 1953-06-10
Abstract: Petroleum fractions are sweetened by oxidation of mercaptans contained therein by the action of oxygen or a gas containing oxygen in the presence of an iminophenol and a Group VIII metal compound to thereby form in situ in the product a chelate compound of the iminophenol and the metal.  Iminophenols referred to are those formed by the reaction of a hydroxy benzaldehyde or hydroxy naphthaldehyde, e.g. ortho-hydroxy benzaldehyde, with an aliphatic, aromatic or hydroaromatic diamine, e.g. ethylene and propylene diamines, diaminodimethylamine and diaminodipropylamine; specific iminophenols mentioned are disalicylal ethylene, disalicylal propylene, disalicylal cyclohexylene, disalicylal napthylene, disalicylal dipropylamino and disalicylal phenylene diimnes.  The Group VIII metal compound may be a metal salt, e.g. a fatty acid salt such as cobalt acetate, stearate, oleate and ricinoleate, or may be cobalt naphthenate, alcoholate, enolate, phenolate, alkyl phenolate, amino phenolate, alkylphthalate, or acetyl acetonate. Alternatively, the petroleum fraction and the iminophenol may be circulated through a bed of activated carbon charged with cobalt nitrate.  The iminophenol and metal compound may be added to the petroleum fraction as a solution in a solvent.  Solvents referred to for the iminophenol are an alcohol, e.g. methanol, and toluene; and for the metal compound, alcohol, methanol, phenol, cresol, an alkyl phenol and kerosene.  The sweetening process may be accelerated by adding alkali, such as sodium or potassium hydroxide, e.g. in an aqueous solution of methanol or ethanol.  A trace of free sulphur or a labile sulphur compound such as an alkaline sulphide may also be present.  The process may be washed with water or dilute alkali or filtered through decolourizing clay.  Petroleum fractions specified are natural or cracked fractions such as gasoline, kerosine or white spirits. Specification 701,443 is referred to.
Patent GB-120263-A (GB)
Title: Improvements in Electrical Resistance Elements.
IPC: H05B3/58
Filed: 1917-11-03
Abstract: 120,263. Nobbs, C. G., and Falkirk Iron Co. Nov. 3, 1917. Eyelets are used as terminals in electric heating-elements in which wire or ribbon is wound on a flat support, such as mica; the wire or strip is passed through and folded over the edges of the holes and clamped by the eyelets. As shown in Fig. 1, the metal ribbon is passed several times through each hole. The eyelet consists of two members c, d, Fig. 2, of brass or other metal, united by expanding the member c. In the modification shown in Fig. 3, metal ribbons g, g<1> are similarly connected to auxiliary terminal eyelet members c, d.
Patent GB-1029450-A (GB)
Title: Modified gelatin for photographic purposes and use thereof
Inventor: MULLER-BARDORFF WOLFGANG
IPC: G03C7/327
Filed: 1965-04-14
Abstract: Diffusion-resistant photographically active compounds containing at least one acid azide (-CON3) group are reacted with gelatin so as to acylate free amino or hydroxy groups in the gelatin and thereby link the active compound thereto; the product is used as an addition for a photographic layer.  The active compound may be a colour coupler, optical brightening agent, hardener, filter dye, developer or anti-foggant; examples are given of the first three of these.
Patent GB-561404-A (GB)
Title: Improvements in and relating to boiler feed and like regulators
IPC: F22D5/14
Filed: 1942-11-13
Abstract: 561,404. Feed supply controlling. ARMSTRONG, C. M. C. Nov. 13, 1942, No. 16093. [Class 123 (ii)] The feed supply valve is controlled by the expansion and contraction of an inclined tube 1 connected at its ends to the steam and water spaces of a boiler drum 3, and the water level in the tube corresponding to the level in the drum is modified by changes of steam pressure due to load variations. The variations of pressure in a drum 14 receiving rising circulation water are communicated through a pipe 11, 12, 13 connected to the drum and to an open ended tube 9 extending into expansion tube.
Patent GB-930229-A (GB)
Title: A method of copper plating selected portions of a ceramic body
IPC: C25D5/54
Filed: 1962-04-27
Abstract: Selected portions of a ceramic body are copper-plated by first metallizing the selected portions with molybdenum-containing material and then contacting said body with hydrochloric acid to render the non-metallized portions insensitive to the cupric plating solution, followed by immersing the ceramic body in said cupric plating solution whereby only the metallized portions are copper-plated.  The molybdenum-containing material is a mixture of molybdenum and manganese, of 2 : 1 ratio by wt., dispersed in a suitable binder, e.g. isobutyl methacrylate thinned with butyl carbitol acetate.  The ceramic material may be of the alumina or beryllia type.  The Mo-Mn mix is bonded to the ceramic by firing in an atmosphere of hydrogen at 1250 DEG  C. for 30 mins.  The cured ceramic is then cooled, cleaned in an alkaline solution, rinsed, and then immersed in conc. HCl of 4N-9N strength, followed by re-rinsing before plating.  The cupric plating solution contains a cupric salt, e.g. sulphate or nitrate, alkali metal tartrate or citrate dissolved in caustic soda, and a water-soluble aldehyde, e.g. formaldehyde.  The acid-treated metallized ceramic body is immersed in the plating solution at room temperature for 10 mins. Subsequently, the copper-plated metallized portions may be over-plated with nickel-silver or gold.  The Specification lists suitable copper, nickel and gold plating solutions and also the alkaline cleaning composition.
Patent GB-398610-A (GB)
Title: Improvements in or relating to coking retort ovens
IPC: C10B21/10
Filed: 1932-06-08
Abstract: 398,610. Coke ovens. KOPPERS CO. OF DELAWARE, Koppers Building, Pittsburg, U.S.A.-(Assignees of Ackeren, J. van; Koppers Building, Pittsburg, U.S.A.) June 8, 1932, No. 16188. Convention date, June 8, 1931. [Classes 51 (i) and 51 (ii).] In a vertically-flued coke oven in which a portion of the products of combustion is recirculated through the heating-flues, the return passages 29 open at their lower ends into the ducts 26 through which the combustible mixture, or, in the case of rich gas firing, the air for combustion, is supplied. The ports 26 are preferably of Venturi form. The invention is more particularly applicable to ovens of the kind described in Specification 171,117, [Class 51 (ii), Furnaces and kilns for applying &c.].
Patent GB-642488-A (GB)
Title: Improvements in or relating to magnetrons
IPC: H01J25/593
Filed: 1948-06-18
Abstract: 642,488. Magnetrons. M-O VALVE CO., Ltd., and WILLSHAW, W. E. June 18, 1948, Nos. 16402 and 29946. [Class 39 (i)] A resonant cavity magnetron oscillator of the " rising sun " type has at least one polepiece pierced by a hole coaxial with the electron orbit space and adapted to act as a wave-guide either to provide an output path or to control the oscillation frequency. As shown, the magnetron comprises a cathode 11, Fig. 1, sealed to a magnetic polepiece 5 by a glass insert 8, a cylindrical copper block 1 having cavities 4, Fig. 2, and a polepiece 5<SP>1</SP> apertured at 22 to receive a plug 27 of dielectric material to form a wave-guide coupled to a cavity 25 tuned by piston 28. The wave-guide 22 may be used to draw an output from the oscillator, or may be used to move the oscillator, output then being taken from one of the cavities 4 by wave guides 16, 20. The polepieces 5, 51 are preferably sealed to the block 1, and the con. tainer so formed sealed by a ceramic plate 26. According to the Provisional Specification, the aperture 22 may have radial slots in register with the cavities 4, and the aperture 22 may flare outwardly away from the block 1.
Patent GB-820011-A (GB)
Title: Improvements relating to automatic machining systems
Inventor: MACKENZIE THOMAS HERBERT
IPC: B23Q35/12
Filed: 1956-05-28
Abstract: 820,011. Electric automatic machine control systems. BRITISH THOMSON-HOUSTON CO. Ltd. May 14, 1957 [May 28, 1956], No. 16432/56. Class 40 (1). An automatic machine-tool controlled by a recorded programme supplying x, y and slope values for a tool of nominal radius has a computer which automatically introduces a correction for deviation of the tool radius from the nominal value, in terms of modifications in the x and y components for the instantaneous value of the slope. As shown (Fig. 2), the position of a workpiece 11 relative to a fixed tool 10 is determined by data received by a translation unit 19 from a reproducing head (not shown) controlling the angular rotation of the rotors of transmitting selsyns 20X, 20Y. Any error signals developed in the stators of receiver selsyns 14X, 14Y are fed through servo-systems 12X, 12Y to drive the workpiece 11 in the X and Y directions respectively until the error signals are removed. Correction for the actual tool radius is introduced by differential selsyns 22X, 22Y connected between the stators of selsyns 20, 14. A pin 27 (Fig. 3), radially adjusted by a micrometer screw 28 so that the distance between the axis of the pin 27 and that of a shaft 24 is exactly equal to the difference between the nominal and true tool radius, links with axial slots in two T-shaped members 30X, 30Y, restrained to move along the X and Y directions respectively, and coupled via rack- and-pinion to the rotors of differential selsyns 22X, 22Y. The shaft 24 is made to rotate in accordance with the slope at the point of cutting of the workpiece 11, and the corresponding movement of the T-shaped members 30X, 30Y, is such that the angular rotations introduced into the differential selsyns 22X, 22Y is exactly that required for connecting the co-ordinate movements of the workpiece 11 to compensate for the difference in toool radius. Specification 761,918 is referred to.
Patent GB-145423-A (GB)
Title: Improvements in and relating to vacuum rectifiers with rotating electric arc
IPC: H01J17/14
Filed: 1920-06-17
Abstract: 145,423. Siemens - Schuckertwerke. Oct. 23, 1915, [Convention date]. Low-pressure metallicvapour apparatus.-In a mercury-vapour rectifier, the arc of which is caused to rotate by means of a magnetic field, the strength of the field is regulated in accordance with the load on the rectifier, for instance, by connecting a winding in series with the rectifier, so as to increase the counter electro - motive force, and reduce the drop in potential, as the load increases, thereby enabling two such rectifiers to be used in parallel. In the arrangement shown, the pole 5 of a magnet, excited by a winding 6 in series with the rectifier, extends into an annular cathode 7 in a vessel containing two anodes 2, 3. In addition to the main winding 6, one or more separately excited windings 10 may be provided having a rheostat 11 for controlling the magnetic field and for distributing the load between two rectifiers. A series resistance or an adjustable shunt may be connected with the winding 6, which may be excited by a dynamo, the voltage of which is controlled by the rectified current. In another arrangement, the pole extends into two annular anodes.