baber/WOPTO huggingface dataset:
Patent GB-567006-A (GB)
Title: Improvements in or relating to electric clocks
IPC: G04C15/00
Filed: 1943-04-28
Abstract: 567,006. Electric clocks. BRADBURY, F. April 28, 1943, No. 6738. [Class 139] An electric clock of the synchronous motor drive type includes a motor having notched stator and rotor plates and an electricallyoperated differential mechanism similar to that described in Specification 565,850, [Group XXXV]. As shown in Figs. 1 and 2, the clock movement has a front plate 1 with four rearwardly extending pillars 2 formed with reduced ends, from about mid length, to receive pairs of stator plates 3 separated by distance sleeves 4. Across the base of the plates is arranged the energizing coil 6 with a laminated core 7 connected to them by distance pieces 8. Magnetic strips 9 are provided for increasing the magnetic path. The rotors 10 are rotatably mounted on a differential shaft 29 and each is rigidly connected to a corresponding crown wheel 31 in mesh with a planet wheel 34 supported on a carrier 33 on the shaft 29. The crown wheels may have twenty-four and twenty-five teeth respectively. A worm 36 on the shaft 29 engages a worm-wheel 15 integral with another worm 14 on a sleeve loosely mounted on a stud 12 supported by a lug pressed out from the front plate 1. The worm 14 engages a driving wheel 17 loosely mounted on a tubular spindle 16 which carries the minute hand, the wheel 17 being clutched frictionally thereto by a spider or coil spring 18. A pinion 19 secured to the spindle 16 engages a wheel 24 on the hand-setting shaft 27 and a pinion 26 integral with the wheel 24 engages a wheel 23 on the hour hand sleeve 21. The inner stator plates 3 and the plates 9 are supported in a middle train plate 11 that has holes to provide bearings for the various spindles. The various parts are designed and disposed for ease in assembly. A fixing bracket 37, that holds the clock movement to the dial plate, is extended to provide means for holding the starting mechanism for the clock and for carrying the terminal elements and electric leads to the coil 6. In a modified form (not shown), spur gears are used instead of the worm gearing to drive the minute spindle. Other gears and parts may be added to drive a seconds hand and operate an alarm mechanism. The Provisional Specification describes also a form of starting mechanism including a spring with bent extremities to engage the two rotors when in operated position to start the rotors in opposite directions.
Patent GB-1221244-A (GB)
Title: Particulate polymer foams
Inventor: LERMAN FRANK
IPC: C08J3/12
Filed: 1968-02-12
Abstract: 1,221,244. Spherical particulate foamed thermoplastic polymer. NATIONAL DISTILLERS & CHEMICAL CORP. 12 Feb., 1968 [10 Feb., 1967], No. 6833/68. Headings C3C and C3P. Spherical particles of foamed thermoplastic polymer are produced by forming a mixture of the polymer incorporating a blowing agent therefor, a liquid in which the molten polymer is dispersable and a water-soluble block copolymer of ethylene oxide and propylene oxide, agitating the mixture at a temperature above the melting point of the polymer to form a dispersion of spherical particles of the polymer in the liquid and either (A) heating the dispersion to activate the blowing agent and foam the particles, cooling the dispersion to below the melting point of the polymer and recovering the resulting foamed spherical particles from the cooled dispersion, or (B) cooling the dispersion to below the melting point of the polymer. recovering the resulting spherical particles from the cooled dispersion, drying them and subsequently heating them to melt them and activate the blowing agent to form spherical foamed particles, and cooling the foamed particles; the foamed particles having a particle size of up to 2000 microns. The polymer used in the examples was polyethylene or an ethylene-vinyl acetate copolymer, the liquid was water, the blowing agent was 4,4<SP>1</SP>-oxybis- (benzenesulphonyl hydrazide) or dinitrosopentamethylene tetramine and the polymer was coloured with phthalocyanine blue in one example.
Patent GB-559426-A (GB)
Title: Isomerization of paraffin hydrocarbons
IPC: C07C5/27
Filed: 1942-05-20
Abstract: 559,426. Isomerizing hydrocarbons. SHELL DEVELOPMENT CO. May 20,1942, No. 6854. Convention date, June 2, 1941. Drawings to Specification. [Class 2 (iii)] Aliphatic hydrocarbons containing 5 to 10 carbon atoms are isomerized to branched chain hydrocarbons by passing them into contact with a Friedel-Crafts type catalyst at 40-130‹ C. in presence of a sufficient amount of a substantially non-isomerizable cycloparaffin hydrocarbon material such as cyclopentane, a mixture of methyl cyclopentane and cyclohexane, or a mixture of dimethyl cyclopentane and methyl cyclohexane, to inhibit degradation of the treated hydrocarbon and product. The catalyst may be aluminium chloride or bromide, alone or on a carrier, or mixed with other metal halides or organic complex compounds of aluminium halides, or dissolved in a mixture of molten metal halides such as AlCl 3 -NaCl-KCl, AlCl 3 -SbCl 3 , AlCl 3 -NaCl- ZnCl 2 , or AlCl 3 -SO 2 -ZnCl 2 , or a slurry of AlCl 3  or AlBr 3  in a liquid complex formed from AlCl 3  and an olefinic cycloparaffin such as cyclohexene. The isomers obtained include gem isomers, thus normal hexane gives 2, 2- dimethyl butane. Examples are given of the isomerization of normal pentane and hexane.
Patent GB-1424134-A (GB)
Title: Ac power supply circuit arrangements
IPC: H02M7/523
Filed: 1973-02-13
Abstract: 1424134 Converter switching systems SIEMENS AG 13 Feb 1973 [12 June 1972] 6902/73 Headings H2H and H2F [Also in Division H3] Apparatus for producing the various voltages required for the operation of a television receiver comprises means for rectifying an A.C. supply and a thyristor oscillator for inverting the rectified A.C. supply. An A.C. supply at terminals 2, 3 is rectified by a diode 4 and smoothed by a capacitor 5 to provide a D.C. source at terminals 6, 7. Between a further terminal 8 and the terminal 6 is connected the primary winding 9 of a transformer 19 and between terminals 8, 7 are connected a plurality of parallel circuits. When an A.C. source is applied to terminals 2, 3, capacitors 11, 14 begin charging and when the potential across the capacitor 11 reaches the breakdown value of a diac 18, a trigger potential is applied to the gate electrode of a thyristor 12 to render the thyristor conductive whereupon the circuit goes into oscillation, positive half waves flowing through the thyristor and negative half-waves through a reversely poled diode 13. A diode 17 and resistor 16 provide a discharge path for the capacitor 11. An alternating current thus flows in the primary winding 9 of transformer 19 to induce current in the secondary windings 32, 33, 26. Alternating current is available at terminals 36 and direct current at terminals 39, 40, 45, the voltage which is available at 45 being increased by means of a multiplying cascade 44. The voltage obtainable at the winding 24 is used to regulate the oscillator output by way of a Zener diode 29 and a transistor 31. The diode 24 may be omitted and a variable inductor may be connected between the capacitor 14 and inductor 15 to enhance the operation of the thyristor 12.
Patent GB-592452-A (GB)
Title: Self-priming centrifugal pump
IPC: F04D9/02
Filed: 1945-03-20
Abstract: 592,452. Self - priming centrifugal pumps. TRIGGS, W. W. (Chain Belt Co.). March 20, 1945, No. 6957. [Class 110 (i)] In a self-priming centrifugal pump having a priming-liquid reservoir, the impeller chamber is housed within the reservoir, and is associated with a guide or " peeler " blade, the position of which relative to the impeller may be adjusted without dismantling the pump. The impeller chamber 14, which is of volute form terminating in a discharge conduit 23 having a discharge port 24 in proximity to a nipple 7, is formed with a flange 19 and welded to the back plate 12 of the reservoir casing 1. A T-fitting 8 connected to the nipple 7 comprises a discharge branch 9 and a branch 10, normally closed by a plug 11, for introducing priming liquid into the reservoir. An inlet conduit 15 extends between the suction port 20 and an annular flange 26 which is welded to the conduit and also to the casing 1 through an aperture 4. A flanged inlet nipple 53 is attached to the flange 26 with a sheet 54 of rubber or equivalent material sandwiched between. A tongue 55 cut in the sheet 54, has a weight 56 attached thereto and seats against the inclined inner end 57 of the inlet nipple 53 to form an inlet valve. A priming-liquid conduit 16 let into and welded to the inlet conduit 15 carries an arm 30 provided with a resilient tongue 35 which is spaced from a port 31 but is adapted to seat against it to cut off the flow of priming liquid in response to the increase in suction which occurs when priming is completed. The impeller 38 is introduced into the chamber 14 through an opening 37 in the back plate 12, which opening is closed by an annular flange 39 having a tubular extension 40 in which is mounted a seal 41 for the impeller shaft 42. A mounting flange 43 is attached to the extension 40. A plate 46 is adjustably mounted over a vertical slot 45 in the back plate 12 and carries a " peeler " guide blade 50 which protrudes within the impeller chamber and is positioned with its bevelled edge 52 just clearing the impeller periphery. An inspection port 5 closed by a cover 6 is provided.
Patent GB-960286-A (GB)
Title: Composite pigment of high chalk resistance
IPC: C09C1/00
Filed: 1962-02-22
Abstract: A paint comprises an alkyd resin and a titanium dioxide-calcium sulphate pigment prepared by mixing an aqueous slurry of anhydrite in which the average particle size of the anhydrite is 0.3m  to 0.7m  in diameter with an aqueous titanium salt (e.g. sulphate) solution, hydrolyzing to form a coprecipitated hydrate, adding to said hydrate a titanium sol and zinc or a zinc compound, and calcining.  Calcium carbonate and antimony oxide may be added to the coprecipitated hydrate. The zinc compound may be an organo-zinc compound or zinc oxide, hydroxide, sulphate or halide.  Specification 848,617 is referred to.ALSO:A process for preparing a titanium dioxidecalcium sulphate composite pigment having improved chalk resistance, comprises preparing an anhydrite aqueous slurry in which the average particle size of the anhydrite is 0.3 m  to 0.7 m  in diameter, admixing an aqueous titanium salt (e.g. sulphate) solution with said slurry and hydrolysing the titanium salt to form a coprecipitated titanium hydrate, adding to said hydrate a titanium sol and zinc or a zinc compound in amount of at least 1.0%, calculated as titanium dioxide, and 1.0 to 3.0% calculated as zinc oxide, respectively, and calcining e.g. 700 DEG  to 1075 DEG  C.  Calcium carbonate and antimony oxide may be added with the zinc.  The titanium sol may comprise articular crystals having a particle size of 50 to 1500 <\>rA in diameter.  The zinc compound may be the oxide, hydroxide, sulphate or halide or an organo zinc compound. The anhydrite may be prepared by the reaction of lime, limestone or gypsum with sulphuric acid; and the titanium sol by heat treating an aqueous slurry of an alkali metal titanate or an hydrous titanium dioxide with a monobasic acid or, as in the examples, from titanium tetrachloride, sodium hydroxide with or without hydrochloric acid or sodium titanate and hydrochloric acid.  The pigment may be mixed with an alkyd resin vehicle. Specification 848,617 is referred to.ALSO:Ceramic panels are coated with a paint comprising an alkyd resin and a composite titanium dioxide-calcium sulphate pigment (see Division C4). Specification 848,617 is referred to.
Patent GB-381468-A (GB)
Title: Improvements in or relating to gas-cocks
IPC: F16K5/10
Filed: 1932-03-09
Abstract: 381,468. Gas cocks. EWART, S., 346, Euston Road, London. March 9, 1932, No. 7094. [Class 135.] Closure members.-In a gas cock 4 for water heaters &c. the maximum flow of gas is made variable by means of a screw 10 which projects into the plug passage 5, the screw being adjusted by a screwdriver at 10a. The setting is sealed by a screwed plug 11 or other closing device.
Patent GB-471862-A (GB)
Title: Improvements in and relating to a method of manufacturing hard metal alloys
IPC: C22C1/05
Filed: 1936-03-09
Abstract: Hard metal alloys consisting of a major portion of a carbide and a balance of auxiliary metal are produced by mixing ore containing the element or elements to be converted into carbide with the auxiliary metal either free or combined in a compound or an ore and heating such mixture in the presence of an amount of carbon sufficient at least to carburize the required amount of the carbide-forming elements, the heating being carried out so as to separate the necessary elements from the ore, carburize the elements required as carbides and alloy the latter with the auxiliary metal.  The alloy thus formed is separated from the residue.  The ores may contain the elements at least in part in the form of oxides and the carbon may be wholly or partly in the solid state or wholly or partly in the form of a gas or vapour containing carbon preferably at a pressure of above one atmosphere.  Sulphur and other impurities may be removed by heat treatment from the ores before the latter are treated with carbon. The amounts of the ores may be proportioned so as to give an alloy containing 65-95 per cent of carbide and the balance auxiliary metal.  Ores containing one to four of the following elements of tungsten, molybdenum, tantalum, titanium, silicon, boron, zirconium, niobium, chromium or vanadium may be used, and the binding metal may be selected from the group comprising iron nickel cobalt and chromium.  The production of alloys containing 70-75 per cent tungsten carbide and the balance iron from ferberite or wolframite and of alloys containing 75-77 per cent of tungsten carbide and the balance manganese from hybnerite is described.
Patent GB-231164-A (GB)
Title: Improvements in apparatus for cleaning and stripping revolving-flat carding machines
IPC: D01G15/76
Filed: 1925-03-17
Abstract: 231,164. Gegauff, C., and Pflimlin, J. March 18, 1924, [Convention date]. Addition to 216,480. Carding-engines. - ln a stripping and cleaning device of the kind described in the parent Specification, the teeth a of the device are flat and thin and the operative ends a<1> are twisted at a right-angle to the stem. The teeth are mounted on a plate b secured to the shaft c in such a manner as to prevent oscillation. They are free to move backwards, but on their return movement are stopped by the plate b. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an arrangement in which a band of leather is interposed between the teeth and the plate and a band of rubber is interposed between the teeth and the clamping-plate. This subject-matter does not appear in the Specification as accepted.
Patent GB-867696-A (GB)
Title: Improvements relating to expansible fluid-tight couplings
IPC: F16L59/21
Filed: 1960-03-01
Abstract: 867,696. Expansion joints. BABCOCK & WILCOX CO. March 1, 1960 [March 3, 1959], No. 7201/60. Class 99(l). An expansible fluid-tight coupling 23 for fixing between the opposing ends of two coaxial ducts 21, 22 includes an expansible portion 30 which has the wall thereof formed from relatively flexible, curved, metallic sheeting bowed inwardly between two substantially parallel spaced frame members 24, 25 adapted to be respectively connected to the opposing ends of the ducts. As shown, the coupling is of rectangular shape, the frames being connected to flanges 21A, 22A formed on the ducts, and the portion 30 comprising pairs of wall sections 30A, 30B welded at 34c to angular corner pieces 34. Excessive movement between the frames is prevented by means 35 comprising a pin 39A carried on a plate 36 secured to the frame 25 and passing into a slot 39 in a plate 37 attached to the frame 24 and overlapping the plate 36. Reduction of heat loss from the ducts is made by surrounding the conduits with a heat-insulating material 9, the concave cavity of the portion 30 being also packed with such material. The corner pieces 34 may be provided with parallel, transverse flutes.
Patent GB-680660-A (GB)
Title: The drying of ceramic articles by radio frequency heating
IPC: F26B3/34
Filed: 1950-03-23
Abstract: 680,660. Dielectric heating. COPELAND & SONS, Ltd., W. T., and COPELAND, R. S. C. March, 27, 1951 [March 23, 1950], No. 7249/50. Class 39(iii) [Also in Group XIII] An electrode system for drying ceramic ware C includes a series of live electrodes L extending radially from a central tube L', and a series of earthed electrodes N extending from a spider N<SP>1</SP>. Live and earthed conductor rods L<SP>2</SP>, N<SP>2</SP> respectively are provided, and the system is embedded in insulating material, not shown, and placed within the article C which may be rotated. Specifications 540,494, 649,106 and 659,327 are referred to.
Patent GB-1185032-A (GB)
Title: Apparatus for Transferring Workpieces
Inventor: RICHARDSON BARRY ANTHONY
IPC: B23Q7/04
Filed: 1966-02-21
Abstract: 1,185,032. Transferring blanks; metal working presses. WICKMAN MACHINE TOOL SALES Ltd. 28 March, 1967 [21 Feb., 1966], No. 7413/66. Headings B3H and B3W. [Also in Division B8] A pair of gripping jaws for transferring a workpiece is controlled by an axially movable actuating member 42 which operates electrical switches to provide an electrical signal corresponding to the attitude of the jaws in dependence upon the presence or absence of a workpiece between the jaws. As described, the lowermost of a column of workpieces (75) (Fig. 6, not shown) contained in a tube (74) is moved by a ram (73) against a stop member (69), whereupon compressed air is introduced through a passage 48 of the gripping mechanism Fig. 3 to move a rod 42 against the action of a spring 47 causing a pair of gripping jaws 53, 54, connected via bell crank levers (51, 52) (Fig. 4, not shown) to an integral rod 45, to close on the workpiece. A switch (59) is closed by a cam 57 mounted on the rod 42 to actuate a piston 17, Fig. 1, which rotates a shaft 12 by a rack 16 and pinion 13 mechanism. As the shaft 12 rotates, a shaft 19 which is connected at its end 21, to the gripping mechanism Fig. 3 is moved upwards by a pivoted lever (23) engaging a face cam 14, at its one end and the inner end of the shaft 19 at its other-end. The shaft 19 is then rotated through a desired angle by a Geneva mechanism 15, 22, and lowered to its normal position by the lever (23), whereupon a microswitch 62 is closed to cut off the compressed air causing the rod 42 to move under the action of the spring 47 and so move the gripping jaws 53, 54 apart. As the workpiece is released, a switch 58 is closed by a cam 56 on the rod 42 to return the rotating mechanism Fig. 1 to its original position. If a workpiece is not present, a switch (61) is actuated by the cam 57 to operate a warning device or prevent actuation of other work stations as described in Specification 1,185,033. In an alternative embodiment, the jaws 53, 54 are connected through bell crank levers to a rod (64) (Fig. 5, not shown), which is arranged at 90 degrees to, and connected to the rod 43 through a bell crank lever (65).
Patent GB-201960-A (GB)
Title: Improvements in and relating to air coolers
IPC: F28D19/04
Filed: 1922-03-14
Abstract: 201,960. Fullerton, Hodgart, & Barclay, Ltd., and McGregor, W. March 14,1922. Cooling air by evaporation of cooling liquids.-Air under pressure is cooled by a device operating on the same principle as a known type of condenser, in which a structure with nests of tubes between headers is rotated to dip the tubes into a bath of water, cooling-air being forced over the wetted surfaces. In the arrangement shown, which may be located between the cylinders of multi-stage air compressors, the rotary structure, comprising nests of tubes 3 and inlet and outlet headers 1, 2, is rotated by gearing 21 to dip the tubes into a bath of water 7, the air to be cooled passing through the tubes as they emerge from the water. The cooling-air is forced by a fan through an inlet 5 in a casing 4 surrounding the structure, and after passing over the wetted surfaces of the tubes escapes through the outlet 6. The cross-sectional area of the outlet passage 8 for the cooled air is similar to that of the inlet passage 8 leading into the header 1. By means of baffles 14 in the inlet and outlet passages, the air to be cooled is prevented from entering the nests of tubes as they dip into the water. Deflectors 11 are arranged in the spaces 10 between the rings of tubes so as to distribute the cooling-air.
Patent GB-794074-A (GB)
Title: Improvements relating to rubber overshoes for fitment to endless tracks of tracked vehicles
IPC: B62D55/275
Filed: 1956-03-09
Abstract: 794,074. Endless tracks for vehicles. PIRELLI SOC. PER AZIONI. March 9, 1956 [March 9, 1955], No. 7477/56. Class 79(1) An endless track rubber overshoe comprises a rubber body 2 having a ground contacting surface and bonded to a metallic plate 1 which has a base 5 and side walls 6 directed toward the ground contacting surface and being embedded in the rubber body, the base portion carrying parts for detachable connection to a track link 4. As shown the base 5 is secured to the link 4 by a spring key (not shown) and a lip 11.
Patent GB-602336-A (GB)
Title: Improvements in or relating to band or hose clips
IPC: B21H8/00
Filed: 1945-03-24
Abstract: 602,336. Making hose clips. O'SHEI, W. E. March 24, 1945, No. 7488. [Class 83 (ii)] Toothed bands for hose clips, the teeth of which engage with the threads of a tightening screw, are made by punching down portions 4 of the metal by curved shearing cuts 3, the metal remaining unsheared at the ends 5. The maximum displacement of the metal does not exceed the thickness of the band. When required to engage with acme-threaded screws, the sides of the teeth are bevelled in a subsequent operation. Specifications 203,262, [Class 44], and 542,482 are referred to.
Patent GB-211725-A (GB)
Title: Improved free-wheel and brake hub for bicycles
IPC: B62L5/00
Filed: 1923-03-15
Abstract: 211,725. Bourgard, P. March 15, 1923. Back-pedalling brake and free-wheel arrangements.-In a coaster hub for bicycles, a triangular or equivalently screw-threaded driving-sleeve 2 engages with a correspondingly threaded nut or sleeve 5 which is longitudinally slotted, as at 5<1>, for the greater part of its length, the slots starting alternativelv from one end and then the other. During driving the coned surface at the left-hand end of the nut engages with a corresponding surface on the inside of the hub, but on backpedalling, the teeth of a ring 6, coupled to the nut, engage teeth on an anchored bearing-cone 7 so that the nut is expanded into contact with the hub. The ring 6 is fitted into a conical recess at the left-hand end of the nut which is flanged at 5<11> to ensure that the ring will move longitudinally with the nut; the ring also has radial lugs engaging with the enlarged ends of the slots 5<1> at the left-hand end of the nut, and in this waythe nut and ring are connected together, for rotational movements. The ring is mounted on a slidable but non-rotatable sleeve 10 which carries a drag spring 11.