baber/WOPTO huggingface dataset:
Patent GB-1125832-A (GB)
Title: Process for pyrolyzing copolymers of ethylene and vinyl esters
IPC: C08F8/50
Filed: 1966-05-02
Abstract: 1,125,832. Treating ethylene-vinyl ester copolymers. STAMICARBON N.V. 2 May, 1966 [7 May, 1965], No. 19312/66. Heading C3P. Ethylene/vinyl ester copolymers are pyrolysed by heating at 225‹ to 350‹ C. and at least 90 atmospheres in the presence of a diluent. The vinyl ester may be vinyl acetate, propionate, butyrate or benzoate. The diluent may be ethylene, benzene, xylene, toluene, cyclohexane or hexane. When ethylene is used pyrolysis is preferably effected in the presence of a radical trap, e.g. hydroquinone or 4,4-thiobis-(6-t-butylm-cresol). The resulting unsaturated polymers are sulphur vulcanizable.
Patent GB-885061-A (GB)
Title: Process for the recovery of zirconium values
IPC: C22B34/14
Filed: 1958-06-18
Abstract: Alkali metal zirconates are obtained from zirconium silicate ores such as zircon by heating the ore in pulverulent form and adding an alkali metal hydroxide thereto, the conditions being such that a melt is not formed, thereby reducing corrosion of the reactors.  The reaction may be performed in a rotary kiln by preheating the ore therein initially to at least 450 DEG  C. and adding the alkali metal hydroxide to the ore at one or more places along the kiln; alternatively preheated ore may be mixed in a suitable mixer with the alkali metal hydroxide and reacted either in said mixer or in a separate receptacle.  In an exemplified process, the alkali metal hydroxide is added to the upper portion of a layer of preheated zircon in a crucible, the amount of hydroxide being insufficient to penetrate the whole layer and contact the walls of the crucible; a layer of zirconate may if desired be first placed in the crucible. The alkali metal hydroxide employed preferably contains less than 20% by weight of water.  The mixture during reaction may either remain a friable pulverulent mass or may become a readily workable plastic mass. Alkali metals referred to are sodium, potassium and lithium. Specification 885,060 is referred to.
Patent GB-786195-A (GB)
Title: Improvements relating to fluid control valves
IPC: F16K1/46
Filed: 1954-07-02
Abstract: 786,195. Valves. HYDRA-POWER CORPORATION. July 2, 1954, No. 19447/54. Class 135. A valve consists of a cylindrical closure member 34 which is axially movable in a bore in which is fitted a sleeve 14 having an annular portion 38 which, in combination with a recess in the bore forms an annular chamber to receive an 0-ring 41 of rubber &c. with which the member 34 forms a seal when, in its closed position, it enters the mouth of the annular chamber and deforms the 0-ring as shown in the left-hand part of the Figure. The part 38 of the sleeve 14 constitutes a stop for the valve member which is guided when in and near the closed position by a reduced part 36 of the bore. The cross-section of the 0-ring is initially of greater diameter than the radial width of the annular chamber, and the radial width of the mouth of the annular chamber is less than onehalf of the radial width of the chamber. A joint between the sleeve 14 and the body of the valve is formed on the side of the 0-ring remote from that to which the controlled pressure fluid has access. As shown, the invention is applied to a shuttle valve in which an outlet 21 is connected to either of a pair of inlets 15, 16 depending upon which is at the higher pressure. A sprung ball 27 coacting with a flange 26 locates the shuttle in either of its extreme positions. Grooves 23a<1>, 23b<1> are formed in the movable member for the passage of fluid. The invention is stated to be applicable also to relief, check, poppet, globe or needle valves.
Patent GB-147521-A (GB)
Title: Improvements in golf ball markers
IPC: A63B45/02
Filed: 1920-07-08
Abstract: 147,521. Lyon, J. D. Jan. 31, 1914, [Convention date]. Embossing.-A golf-ball marker comprises a pair of cup-shaped jaws slidably mounted on a base, and adapted to be closed to grip the ball, and a forked lever pivoted to the base and carrying a segmental die-holder in such manner that the curved die rolls on the ball and marks its lettering thereon when the pivoted lever is swung over. The jaws 14, 15 are mounted on the ends of stud shafts 16, 17 slidably mounted in bearings 18, 19 on the base 9, and are adapted to be closed to grip the ball by turning a circular plate 27 let into the base and provided with cam slots 28, 29 engaging pins 25, 24 which project from the bottom of the jaws. The forked ends of the operating lever 34 are mounted on the shafts 16, 17. A die-holder 37 is suspended between the spaced handle members by means of a pin 38 engaging slots 39 therein. In operation, the die 41 is fitted in a slot 40 in the die-holder 37, and the latter is turned on its pivot 38 to the position shown in Fig. 3, the die being then pressed into the surface of the ball by adjusting a small handle 46 carrying eccentrics 45 bearing on the ends of the pin 38. The operating lever 34 is then swung over to the right, during which movement the die-holder rocks on its fulcrum 38 so that the die rolls on the surface of the ball and makes a clear impression.
Patent GB-280270-A (GB)
Title: Improvements in and relating to electric arc welding apparatus
IPC: B23K9/10
Filed: 1926-08-09
Abstract: 280,270. Longbottom, Sir B., and Greenhalgh, E. Aug. 9, 1926, Supplying consuming devices; boosting by static transformers.-Relates to systems for supplying a plurality of arc welding units and is particularly applicable to twovoltage systems of the kind referred to in Specification 166,914. An electromagnetic switch associated with each welding unit short-circuits a section of resistance associated with the excitation of an alternator or in series with the primary winding of a boosting transformer. The Specification describes the application to systems in which the welders are supplied (a) on three wires from a common alternator and transformer, (b) by a common alternator and independent transformers to each welding unit for either single voltage or two-voltage supply, and (c) from AC mains through a boosting transformer. A typical arrangement is shown at 3A in Fig. 3, in which the are-striking current energizes a coil r<1> of a switch R which then short circuits a section of a resistance R in any of the relationships referred to above, resulting in augmenting the supply voltage to an extent sufficient to avoid disturbance of other welding units in operation. The coil d<1> of the switch D effects the change to welding voltage and also switches in retaining coils d<2>, r<2> for the switches D, R. In a single voltage welder 3D, Fig. 3, the switch R is operated by a single coil r<1> in the welding circuit. Fig. 3 also shows a two-voltage arrangement, 3B, in which the switch R is used with two contactors D<1>, D<2> which replace the change over switch D. The actuating coils of the switches D, R may be arranged in the primary circuits of the transformer, as in the modification 3c shown in Fig. 3.
Patent GB-1103706-A (GB)
Title: Aliphatic carboxylic acids and their preparation
Inventor: AGHORAMURTHY KRISHNASASTRI
IPC: C07C45/73
Filed: 1966-05-04
Abstract: 3,3-Dialkylalkanoic acids (containing at least 10 C) are prepared by heating a 1,1-dialkyl-4-(31-oxoalkyl) cyclohexane-3,5-dione (the 31-oxoalkyl radical containing not less than 3 C) with hydrazine in the presence of an alkali metal hydroxide and an organic hydroxylic solvent to give an alkali metal salt of 3,3-dialkyl-5,9-dioxoalkanoic acid dihydrazone, heating to 180 DEG  to 250 DEG  C. to convert to the alkali metal salt of the 3,3-dialkylalkanoic acid and acidifying. 31-oxobutyl, 31-oxotetradecyl, 31-oxotetrapentyl and 31-oxotetracontyl are mentioned as suitable radicals and octyl alcohol, mono-, di-, and tri-ethylene glycol and glycerol may be the hydroxylic solvents.  Examples describe the preparation of 3,3-dimethyldecanoic, 3,3-dimethylundecanoic, and 3,3-dimethyleicosanic acids.  The 1,1-dialkyl-4-(31-oxoalkyl) cyclohexane-3, 5-dione may be prepared by contacting a 1,1-dialkylcyclohexane-3,5-dione with an alkyl vinyl ketone or a 2-chloroethyl alkyl ketone in the presence of an alkali metal hydroxide or a trialkylamine and examples are given.
Patent GB-1217801-A (GB)
Title: Improvements in or relating to apparatus for mising fuel and air
Inventor: LAZAR JEFFREY M
IPC: F02D9/00
Filed: 1969-04-17
Abstract: 1,217,801. Spray carburetters. HONEYWELL Inc. April 17, 1969 [April 17, 1968], No. 19721/69. Heading F1B. [Also in Division G3] A fuel metering means 25 supplying fuel to an air intake 14, which may be part of an I. C. engine, is operated by a fluid signal in response to the mass rate of air flow through the intake. The fluid signal is obtained from a cascade of four proportional fluid amplifiers 61, 66, 71 and 76 supplied from a source 130, such as an electrically or enginedriven compressor or a storage tank and controlled by a velocity signal from parts 81, 82, a temperature signal from a capillary tube connected to the source through a restrictor 94, and a pressure signal from the port 81 through a static pressure chamber 101 and restrictors 103, 106 and 107. A signal corresponding to mass air flow appears at the outlet ports f and g of amplifer 66 and is modified by a fuel temperature signal applied to the final amplifier 76 from a capillary tube 121 and a signal corresponding to engine demand. The latter is obtained from a pressure port 111 in the inlet manifold 12 and is passed through a restrictor 114 and a pressure tank 115 forming a high-pass filter so that an increased fuel air ratio is provided in response to deceleration on increased engine load. A diaphragm 43 connected to a fuel valve 42 is actuated by the output signal from the final amplifier 76 while a second diaphragm actuates the fuel valve in accordance with the pressure difference between fuel inlet and outlet ports 30, 32. Fuel is supplied through the valve to a nozzle 18 from a pump 27 which may be driven electrically or by the engine and is mixed with the air flow in a chamber 15 containing fixed or movable vanes 19 and a throttle valve 20. The air flow may, alternatively, be sensed by a dynamic pressure tap facing the air flow and the temperature by a bulb containing expansible fluid. The invention is shown applied to a V-engine.
Patent GB-1100501-A (GB)
Title: Improvements relating to mining-dust suppression
Inventor: FRENCH ALBERT GRAHAM
IPC: E21C35/23
Filed: 1964-05-12
Abstract: 1,100,501. Removing and confining dust in mining operations. COAL INDUSTRY (PATENTS) Ltd. 11 May, 1965 [12 May, 1964], No. 19767/64. Heading F4X. In a method of confining and removing fine dust raised by the cutter element 2, 3 of a mining machine 1, the cutter is enclosed by a curtain produced by air and/or water sprays 6 and the dust-laden atmosphere is exhausted from the enclosure. In the form shown the sprays 6 are supplied with fluid through conduits 4, 5 and the generated dust is exhausted through a duct 8 formed at the centre of the cutting head 2. In a further form (Fig. 3) an annular curtain, the precise form of which is adjustable, is formed around the disc cutter of a milling or shearing type mining machine.
Patent GB-352240-A (GB)
IPC: E21B10/20
Filed: 1930-06-30
Abstract: 352,240. Borehole apparatus. CHICAGO PNEUMATIC TOOL CO., 6, East 44th Street, New York, U.S.A. June 30, 1930, No. 19799. Convention date, Aug. 17, 1929. [Class 85.] In an earth-boring drill of the roller-cutter type, the spindle 1 and cutter have complementary grooves adapted to receive locking segments 5 to hold the parts against relative axial movement, the segments 5 being moved into operative position by forcing through passages 15, 15a material such as plastic wood which also fills the spaces between the ends of the segments &c. to exclude abrasive material. The spindle is secured to the bit-head a by a shank 2 and nut 9, the bit-head closing the passage 15 when the parts are assembled. The spindle and cutter have complementary conical parts 13, 13a to transmit thrusts and facilitate assembly. A baseplate 3 on the spindle engages a recess 10 in the bit-head.
Patent GB-198929-A (GB)
Abstract: 198,929. Romeyn, J. July 14, 1922. Regulating.-The 'back pressure in the exhaust pipe of a two-stroke engine is varied for regulating the output by introducing a stream of scavenging-air into the exhaust pipe in a direction opposing the flow of the exhaust gases. Air entering by a pipe e into a chamber d is directed backwards along the exhaust pipe b, c, and is regulated by a hand or governor controlled throttle f. A baffle i may be fitted so as to form an annular passage h for the gases. The chamber d may be fitted at the outlet side of an exhaustsilencer, so that the air is directed into the silencer.
Patent GB-652943-A (GB)
Title: Manufacture of xanthene dyestuffs
IPC: C09B11/24
Filed: 1948-07-26
Abstract: Dyes are made by sulphonating 3.6-di-(211.611-dimethyl - anilino) - 41 - hydroxy - 51 - carboxy - fluoran and/or the corresponding 51-hydroxy-41-carboxy fluoran.  The products may be chromed.  The starting material may be made by condensing one mol. 5-hydroxy-trimellitic acid with two mols. of (1) 3-hydroxy-21.61-dimethyldiphenylamine, (2) m - chlorphenol, followed by condensation with two mols. 2.6-dimethylaniline, or (3) resorcinol, followed by conversion of the fluorescein derivative so obtained to the 3.6-dichloro-fluoran, and condensation as under (2). An example is given of process (1), followed by sulphonation of the product. Specification 472,757 is referred to.
Patent GB-575321-A (GB)
Title: Improvements relating to power transmission mechanisms
IPC: F16H47/08
Filed: 1943-11-30
Abstract: 575,321. Variable speed gearing. NORMANVILLE, E. J. DE. Nov. 30, 1943, No. 19980. [Class 80 (ii)] The combination of an epicyclic gear with a hydraulic torque converter comprises a toothed annulus m connected to the converter turbine b, a planet carrier p connected to the driven shaft q and a sun gear n con - nected through unidirectional clutches D, C to a stationary member z and to the converter reaction member c, the sun n being also connectible by a clutch member 2 to the converter impeller a. The connections between the converter and the gears include hollow shaft sections c, g, i. A sleeve r integral with the sun gear n carries the inner parts of the unidirectional clutches C, D, which are oppositely acting, and splined thereto is the clutch member 2 which can also engage a face 4 on the stationary casing z. The clutch member can be moved in one direction by pressure fluid acting on pistons 5, and in the opposite direction by springs 11. When the clutch 2 engages the fixed face 4, the mechanism is in low gear, the sun n is held fast, but the clutch C permits forward rotation but prevents backward rotation of the reaction member c. The gear is also effective to enable the engine to serve as a brake. In the high gear position, the clutch 2 is connected to a sleeve 3 fixed to the shaft section i connected to the impeller a. Thus, the sun n and member c are both driven forwardly at the speed of the impeller a, the member c acting as an additional impeller. An additional unidirectional clutch E, Fig. 2 (not shown), may be arranged between the sun pinion and the planet carrier so that in high gear a solid drive is obtained. Alternatively, the additional clutch may be placed between the sun pinion and the annulus.
Patent GB-261075-A (GB)
Title: Improvements in telephone systems
IPC: H04Q3/00
Filed: 1925-08-10
Abstract: 261,075. Standard Telephones & Cables, Ltd., (formerly Western Electric Co., Ltd.), (Deakin, G., and Polinkowsky, L.). Aug. 10, 1925. Semi-automatic exchange systems.-Congestion of traffic from a particular automatic office is indicated by a lamp 4 to a supervisor at the manual office. Each operator's position P1 - - PL accommodates a number of such trunks T1 - - TL. When a trunk is taken into use its relay 1 is energized. Consequently when all the trunks of this group on the first position are in use or disabled (by means of the jacks), a chain circuit is completed from ground to the point X in the 2nd position and so on so that when all the trunks of the group are in use or disabled the lamp 4 glows. The relays 2 are normally energized when the corresponding position is occupied, but may be short-circuited when the position has a predetermined number of waiting calls, e.g. when all the call indicator registers are occupied. The relapse of the relays 2 closes the portion of the circuit of lamp 4 corresponding to the position, irrespective of the condition of the trunks.
Patent GB-123957-A (GB)
Title: Thread Tension Supports.
Inventor: FAIRWEATHER WALLACE
IPC: D05B29/06
Filed: 1918-02-07
Abstract: 123,957. Fairweather, W., (Singer Manufacturing Co.). Feb. 7, 1918. Sewing-machines; thread-tensioning devices.- In sewing-machines, such as described in Specification 123,794, the thread-tensioning devices are supported in the space between the inclined support 1 and the bracket arm 3. The support for the tension devices 8 consists of a web 7 integral with the machine support 1 and bracket arm 3 and at one side thereof. In the arrangement shown, the looper threads lead from the two upper tensions through a guide 9 to the interior of the work-arm ; the needle threads lead from the next four tensions through a guide 10 and take-up device to the needles; and a covering thread leads from the lowest tension through guides 11 to the thread-laying devices.
Patent GB-687372-A (GB)
Title: Improvements in or relating to digging and loading machines
IPC: E02F5/02
Filed: 1950-08-14
Abstract: 687,372. Endless-belt conveyers. ROSETZ, K. Aug. 14,1950. [Aug. 29, 1949] No. 20089/50 Class 78 (i). A digging and loading machine for transferring materials from a heap includes an exchangeable and rotatable disc 2 which has replaceable teeth 10 at its periphery and radially extending grooves, riflings, indentations or the like formed on its upper surface. An endless band 8 provided with pushers 9 transfers the material from the disc on to an inclined vertically adjustable conveyer 3 from which it passes through a shoot 4 on to an inclined conveyer 5 which can be swung about a vertical axis. The disc is driven by a centrally displaced crown wheel which engages its internally toothed periphery.
Patent GB-645975-A (GB)
Title: Method of and means for determining the degree of compacting of concrete masses in the fluid state
IPC: G01N27/04
Filed: 1948-07-28
Abstract: 645,975. Determining physical qualities of materials. SQUARE GRIP REINFORCEMENT CO. (LONDON), Ltd., and GLEGG, G. L. July 28, 1948, No. 20132. [Class 37] Apparatus for obtaining a desired degree of consolidation in concrete during mixing, comprises one or more pairs of electrodes, 2, 3, Fig. 2, inserted in the mixture, and supplied with a small direct or alternating voltage 5, the measured current across the electrodes indicating the degree of consolidation of the concrete. Two pairs of electrodes 9, 10 and 11, 12, Fig. 4, mounted on a unit 13, may be used to obtain equal degrees of consolidation at the bottom and top of the concrete mix by comparing the currents in each pair of electrodes in a bridge circuit, the unbalance current operating a relay 18 to ring a bell 38 when the currents through the electrodes are equal. Specification 588,607 [Group II], is referred to.
Patent GB-404642-A (GB)
Title: Improvements in or relating to electric motors for electrooptical and like systems
IPC: H02K19/14
Filed: 1932-07-16
Abstract: 404,642. Television. JACOMB, W. W., and BAIRD TELEVISION, Ltd., 133, Long Acre, London. July 16, 1932, No. 20174. [Class 40 (iii).] The toothed unwound rotor of a synchronous motor for driving a reconstituting or scanning device in television, telecinematographic, or like apparatus, surrounds the motor stator, carries a part of the scanning device and has a cage consisting of bars extending through the laminµ between conducting core end plates. In the form shown mirrors 14 occupy the whole circumference of the drum 13 to which is bolted the slotted core 10 held between conducting rings 26, 27 which are united by rivets, the number of which is preferably lower than the number of stator slots. These rivets may be skewed. Instead of teeth, the stator 1 may have salient poles and there may be one coil per pole or there may be two pole pieces, one with a shading coil, connected to the outer ends of the arms of a multi-armed yoke each arm of which carries a coil. As a further alternative, the stator, which may be adjustable to obtain the correct phase relationship, may have two sets of pole-pieces 41, 42, Fig. 5, phase-displaced currents being supplied to the two sets of coils. The motor may be given a starting impulse by the friction wheels 20, 22. Specifications 336,655, [Class 40 (iii), Telegraphs, Electric], and 384,346 are referred to.
Patent GB-684841-A (GB)
Title: A device for use in connection with pens or pencils
IPC: B43K29/12
Filed: 1949-08-03
Abstract: 684,841. Spring rollers. ARMELIN, E. R. May 16, 1950 [Aug. 3, 1949]. No. 20214/49. Class 20 (iii). Also in Group XV. A pen or pencil b is attached to the cap j of a holder a in which is also mounted at least one sheet of material d which can be withdrawn into a visible position externally of the holder, the return of the sheet being effected by a spring controlled by a buttonoperated pawl. The sheet of material may be a map and is wound between flanges k, l on a spool c with its free end passing through a narrow slot in the casing and having a member e, Fig. 2 (not shown) by which the map can be withdrawn. Between the flange l and an additional flange m is mounted a spring h which is tensioned as the map is withdrawn. A pawl g engages teeth o on a skirt n of the flange m to prevent the spring from turning the spool c to wind up the withdrawn map until the pawl is released by button f.
Patent GB-258848-A (GB)
Title: Oil-cooling installation for electrical apparatus
IPC: H02K9/19
Filed: 1926-08-17
Abstract: 258,848. Maschinenfabrik Oerlikon, (Assignees of G³ttinger, P.). Sept. 25, 1925, [Convention date]. Regulating or controlling. - Ir electric apparatus cooled by oil which is circulated alternatively by thermo-syphon action or by a pump through radiator elements cooled by surrounding air or other medium, a valve 5, Fig. 2, situated in a pipe 25 through which the oil circulates thermo - syphonic ally is controlled by the operation oj the pump 4, so as to ensure its being shut when the pump is in operation and open when the pump is not working. Valves 2, 3, usually open, may be arranged on either side of the pump so that the pump may be inspected &c. without emptying the whole system. The valve 5 may carry a pinion 14 gearing with a rack 11 loose on a rod 8 connecting pistons 7, 9, of which the piston 7 is subject to the pressure of the pump discharge and the piston 9 to the pressure of a spring 10 and to the pump suction. As soon as the pump is started, the piston 7 rises and moves the rack 11 through a spring 12 to shut the valve, and when the pump stops the pistons and rack are returned by the spring 10. The operation of the pump may be controlled by the temperature of the oil. Where the pump is driven by an electric motor, a device may be provided for throwing the motor out of action when the operation is defective. This may comprise a piston 20, Fig. 3, subject on opposite sides to the pump suction and discharge pressures and connected to a switch 22 in the circuit 26 of a release magnet of known starting apparatus. Should the pump fail after the motor has been started the piston is raised by a spring to open the switch 22 and the starting apparatus is returned to the zero position. A switch device 23, 24 may be provided in connection with the valves 2 and 3 to ensure that the pump motor is not started until the valves 2, 3 have been shut. The Specification as open to inspection under Sect. 91 (3) (a) comprises also electromagnetic actuation of the valve 5 under control of the pump. This subject-matter does not appear in the Specification as accepted.