baber/WOPTO huggingface dataset:
Patent GB-569640-A (GB)
Title: Improvements in or relating to vulcanising machines for repairing rubber tyres and inner tubes, and other rubber or rubberised articles
IPC: B29C35/00
Filed: 1943-08-18
Abstract: 569,640. Tyre-repair plant. STEINER, L. Aug. 18, 1943, No. 13473. [Classes 70 and 87 (ii)] A device for use in repairing tyres, inner tubes and other 'rubber or rubberized articles is provided with a table, for supporting the work beneath the heating and pressure element, rotatable relatively to a fixed support and adapted to be positively clamped in adjusted position ; the heating and pressure elements, one of which is movable towards and away from the other, may have flat and/or curved surfaces, i.e. one may be convex and the other flat or concave. The device comprises a rigid C.shaped frame 1 adapted to be secured to a work bench, the lower limb supporting the table 3 beneath the head 4 through which extends a rod 5 carrying, by means of a universal joint, a heating and pressure element 6. A frame having long and short arms 9, 10 is mounted on the frame and can be moved so that either arm underlies the wheel 7 controlling the movement of the element 6 so as to provide a variation in working height. The table 3 carries a spigot received in a socket on the frame 1, the spigot being surrounded by a disc formed with a slotted edge engageable by a spring-pressed lever on the frame to hold the table in adjusted position. The table is removable so that it can be replaced by one of a different size and shape or by a heating element. The table normally carries a rubber worksupporting pad 12, but this is removable to expose an axial hole in the table and spigot for receiving a valve tube.
Patent GB-899457-A (GB)
Title: Improvements in or relating to scythes and like implements
Inventor: FORREST THOMAS WILLIAM
IPC: A01D1/02
Filed: 1960-04-14
Abstract: 899,457. Handles for scythes. TYZACK & CO. Ltd., W. A. April 14, 1961 [April 14, 1960], No. 13504/60. Class 61. A tubular metal handle 12 is detachably secured to the tang 11 of a scythe blade by means comprising a reversible wedge shaped member 13 secured to and alongside an end length of the handle and lying longitudinally between the handle and tang, the tang having a bent over extremity 19 which interengages the member 13, and means clamping the tang to the wedgeshaped member and handle. The wedge-shaped member 13 is detachably secured medially of its length to the handle 12 by a bolt 15, which passes transversely through the member 13 and diametrically through the handle 12. The tongue 19 of the tang passes transversely through the member 13 and into the wall of the handle. The member 13 and tang 11 are clamped to the handle by a pair of opposing brackets 22, 23 and clamping bolts 24 (not shown), 25, the bracket 22 straddling the handle and the bracket 23 straddling the tang. The handle is provided with a short length of fillet 29 to prevent collapse of the wall.
Patent GB-592078-A (GB)
Title: Improvements in and relating to fastening devices
IPC: A44B19/16
Filed: 1944-07-14
Abstract: 592,078. Sliding-clasp fasteners. WENDE, H. July 14, 1944, No. 13530. Convention date, July 15, 1943. [Class 44] A sliding-clasp fastener comprises bead and grooved members 1, 2 respectively made of resilient flexible material and having interengaging longitudinal grooves 11, 1<11> and tongues 2<1>, 2<11> of triangular semi-circular or dovetail cross section, a tongue and groove on one side of the fastening being staggered with reference to the tongue and groove on the other side. A modification is shown with an additional tongue having a thickened edge projecting from the bottom of the channel of the grooved member 2 and adapted to engage in a groove in the edge of the bead. A slider adapted to draw the bead and groove into engagement comprises side plates 71 with curved edges 711 engaging round the groove and a channel part 8 having hollow tongues 10, 101 adapted to draw the grooves and tongues into engagement.
Patent GB-595496-A (GB)
Title: Improvements in greenhouses
IPC: A01G9/14
Filed: 1944-07-15
Abstract: 595,496. Greenhouses; glazing. CORNETT, H., and BAMBER, R. F. July 15, 1944, No. 13555. [Classes 20(i) and 20 (iii) ] A greenhouse has roof sections 2, 3 hinged at their lower edges to side walls and abutting at their upper edges against a metal, wood or concrete ridge member 8 having a shielding strip 9. The walls may be of brick, concrete or wood with or without glass panels. The roof sections may be held in various positions by toggle links 10 having friction washers at their joints. In a modification, spring-actuated arms may be used to hold the sections in a set position, one end of an arm being pivotally fixed to a roof section and the other end being notched to engage pins on the ridge. A cable fastened to the arm is used to disengage it from the pins. Butt hinges are used to prevent the roof sections being opened past the vertical position. Glass panes 25, Fig. 14, are fixed to the framework 24, of the roof section, by metal bridge plates 28 having wooden or rubber pads 31 to engage the panes. Strips of impregnated rope 30 are disposed between the panes and the framework to resiliently support the glass and to provide drainage channels. The lower edges of the lowermost panels are supported by bent clips lined with rubber or felt.
Patent GB-515688-A (GB)
Title: Improvements in or relating to variable electrical inductances
IPC: H04B1/03
Filed: 1938-05-06
Abstract: 515,688. Inductances. MACLARTY, B. N: May 6, 1938, No. 13637. [Class 38 (ii)] [Also in Group XXXVI] A variable inductance, particularly for shortwave radio transmitters, comprises a coiled copper tube 10 the effective length of which is varied by brushes 29 carried on the forward end of a conducting sheath 20 adapted to be rotated and simultaneously displaced axially so that the brushes move in a helical path along the conductor and the sheath effectively short circuits the dead-end turns. The adjustment is effected by rotation of a central shaft 14 to which is keyed a carrier 24 for pinions 28 meshing with a sun wheel 26 fixed to the frame, the pinions 28 being mounted on lead screws 21 which effect axial displacement of the sheath 20. Two or more brushes bearing on adjacent turns may be provided so as to short-circuit directly one or more of the dead-end turns. Each brush comprises a number of copper laminae 34 slidably mounted in a brush box and individually bonded thereto, alternate laminae being of sufficient width to engage grooves formed in the walls of the brush box. The laminae have a curved knife-edge 36 at their projecting ends and are collectively urged into contact with the conductor 10 by a spring 38, a pressure equalizer in the form of a rubber pad 41 being interposed between the laminae and the pressure plate 40. A capacity element 45 'which may be cylindrical or, as shown at 45A, frusto-conical in shape may be associated with the sheath 20 so that movement of the latter in effecting decrease of inductance effects decrease in capacity. Specification 504,014 is referred to.
Patent GB-569267-A (GB)
Title: Improvements relating to electric discharge tubes
IPC: H01J61/42
Filed: 1943-08-21
Abstract: 569,267. Discharge, lamps. SIEMENS ELECTRIC LAMPS. & SUPPLIES, Ltd., and ALDINGTON, J. N. Aug. 21, 1943, No. 13664. [Class 39 (i)] Fluorescent discharge tubes have quartz envelopes and an exterior coating of fluorescent material, such as those of the tungstate and silicate class or of the sulphide class, or mixtures of both. The tubes are operated with high currents of the order of 1000 amps. of short duration, and for this purpose both the seals and electrodes are designed for steady currents at least five times the continuous operating current, and are energized by the discharge of a bank condenser of a total capacity of 50 m. farads. The time of discharge may be controlled by a high frequency field or by a pair of probe electrodes between which a local discharge is produced. The filling may consist of neon, argon, krypton or xenon at a pressure of 50 mm. of mercury. The Provisional Specification refers to helium or nitrogen as alternative fillings, and calcium chlorophosphate as an alternative fluorescent material.
Patent GB-1012657-A (GB)
Title: Adjustable aluminium crutch
IPC: A61H3/02
Filed: 1964-04-02
Abstract: 1,012,657. Crutches. A. A. SMITH. April 2, 1964, No. 13737/64. Heading A5R. A crutch comprises a pair of side bows 10 and a centre post 11, the centre post having pair of recesses 14 extending longitudinally thereof and the lower portions of the side bows extending parallel to the centre post and fitting within the recesses which are formed complementary to the adjacent portions of the bows. A pair of tubular aluminium bows 10 support an arm piece 12 and a hand grip 13. Arcuate recesses 14, 15 extend along opposite sides of the aluminium centre post for a part or the whole of its length. The lower parts of the bows have holes which for adjusting the length of the crutch, are aligned with any one of a series of openings extending completely through the post. The bows and centre post are secured together by a bolt 16 passing through the aligned holes and a wing nut 17.
Patent GB-272194-A (GB)
Title: Improvements in the production of low boiling point oils by thermal treatment of coals, oils and the like
IPC: C10G1/08
Filed: 1927-05-23
Abstract: 272,194. I. G. Farbenindustrie Akt.- Ges. June 1, 1926, [Convention date]. Hydrocarbons, cracking; hydrogenation, destructive. - Carbonaceous liquids e.g. tars, mineral oils and pastes thereof with coal &c. are converted into products of lower boiling point by heating them first in the liquid state in the presence of catalysts and then passing the products in the state of superheated vapour at substantially higher temperature over further catalysts. The catalysts used are preferably metals of the third to eighth groups and their oxides, and the reaction is preferably carried out in the presence of hydrogen or other gases under pressure. Preheated lignite tar mixed with 1-5 per cent Florida earth is forced into a vertical retort lined with aluminium the lower part of which is maintained at 420‹ C. Hydrogen is passed in under a pressure of 200 atmospheres. The vapours produced pass into the upper portion of the retort maintained at 480‹ C. and filled with a porous catalyst prepared by reducing a mixture of molybdic acid and zinc oxide. A product is obtained containing 80 per cent benzine. Activated wood charcoals, silicates, and diatomaceous earth may also be used as catalysts. Specification 249,156 is referred to.
Patent GB-474631-A (GB)
Title: Improvements in machines for the surface treatment of bricks or the like when in the plastic state
IPC: B28B11/06
Filed: 1936-05-16
Abstract: 474,631. Sanding bricks &c. SUTCLIFFE, H., and HEARTH, G. May 16, 1936, No. 13958. [Class 87 (ii)] In a machine for sanding bricks, plastic bricks or an extruded clay column are passed through a container filled with sand, the openings of which are provided with U-shaped rubber or like flexible strips embracing the bricks on three sides, spring or otherwise loaded rollers located on the delivery side pressing the sand into the bricks. A clay column a is carried by a belt b between guides d to water or steam jets e, excess water being removed by a U-shaped rubber strip g. The column then passes through a container h supplied with sand from a hopper i. U-shaped rubber strips j<1>, j<2>, Fig. 5, prevent escape of sand and the pressure of the strip j<2> may be varied by adjustable clamping plates k. Finally, rollers m, mounted on pivoted levers n and connected by spring-controlled rods q, press the sand into the clay column. Specification 445,216 is referred to.
Patent GB-1376706-A (GB)
Title: Polyvinyl chloride composition
IPC: C08K3/36
Filed: 1973-03-22
Abstract: 1376706 PVC compositions KANEGAFUCHI KAGAKU KOGYO KK 22 March 1973 [25 March 1972] 13995/73 Heading C3P PVC for electric insulation contains 1-15 phr of a silica of particle size 1-9 microns prepared by treatment with sulphuric, nitric or hydrochloric acid of a montmorillonite type clay, e.g. Japanese acid clay or bentonite to remove alumina. The clay is preferably further treated with a siloxane.
Patent GB-269356-A (GB)
Title: Improvements in and connected with governor apparatus for controlling the operation of engines or machines
IPC: G05D13/00
Filed: 1926-06-03
Abstract: 269,356. Barnes, H. N. June 3, 1926. Stop-gear.-Engine stop-gear of the kind wherein the pressure of liquid or fluid used for auxiliary services such as lubricating oil or cooling water is employed to control the engine comprises a piston or like acted upon by the auxiliary fluid and actuating a valve controlling an independent fluid pressure supply to a diaphragm, piston or like which acts on the main supply valve, the valves of a fuel pump or like engine control. The apparatus may act jointly with an Aspinall-type marine governor. Rams 1, 1, Fig. 1, are under the influence of the cooling water and lubricating oil and when in normal condition maintain the enlarged piston valve 4 centrally in the cylinder 5. Suitable springs 6 may surround the free portions of the rams. The inlet port 9 is coupled to a source of independent fluid under pressure. Upon failure of the oil or cooling system, the valve 4 is moved clear of the port 9 and the pressure fluid is opened up to ports and a passage in the cylinder 5 which are connected by a pipe 16, Fig. 4, to the piston and cylinder 15, 14 which acts on the part to be governed. For marine internalcombustion engines having an Aspinall type governor which controls the fuel supply by levers 19, 20, 21, 24, 25 acting on the suction valve 23 of the fuel pump, the rod of the piston 15 is coupled to a lever 21x on the shaft 18. The lever 21<x> is fixed on the shaft 18 but the levers 21, 17 are free thereon, the latter projecting beyond the shaft and having a projection 28 adapted to contact with the lever 21, whilst a projection 29 on the lever 21<x> contacts with the upper end of the lever 17. With this arrangement the two control systems may act independently. The cylinder 15 may have a safety valve and the pipe 7 a stop valve.
Patent GB-257346-A (GB)
Title: Improvements in and relating to the manufacture of reinforced concrete slab walls
IPC: E04B2/56
Filed: 1925-05-29
Abstract: 257,346. Weston, H. May 29, 1925. Slabs.-In hollow walls consisting of slabs and concrete columns, the side edges of the slabs are formed with projections such as truncated pyramids 6 with recessed points to facilitate grouting. The upper edges may be grooved and the lower edges formed with projections.
Patent GB-709217-A (GB)
Title: Improvements in or relating to power operated hoists
Inventor: BROOKS ROBERT JOHN
IPC: B66D3/26
Filed: 1951-06-15
Abstract: 709,217. Hoists. KING, Ltd., G. W. April 24, 1952 [June 15, 1951], No. 14262/51. Class 78 (5) A power-operated hoist of the kind described in Specifications 557,040 and 683,967 having chainguards 10 adapted, when displaced for example by twisting of the chain 11, to operate by means of the lever 13, the control switch of the motor driving the hoist sprocket 12, is provided with pivoted members 16 each including a dependent portion 17 disposed adjacent the chain 11 which, on contacting an element on the chain at a predetermined point in its travel, are pivoted to effect displacement of the guard 10 so as to operate the switch controlling the hoist motor. As shown a pair of spaced parallel members 16 pivoted at 15 to the hoist frame have welded to their lower portions U-shaped members 17, the chain 11 passing between the depending extremities of the member 17. A limit attachment on the hook sprocket frame on coming into contact with the members 17 imparts an angular movement to the members 16 which by means of the links 18 is transmitted to the chainguard 10.
Patent GB-1128274-A (GB)
Title: Method of producing fibrous web from polymer film
IPC: D04H13/00
Filed: 1967-03-29
Abstract: 1,128,274. Producing webs of non-woven fibres from films; perforating apparatus. CHEVRON RESEARCH CO. 29 March, 1967 [31 March, 1966], No. 14366/67. Heading B5B. [Also in Division D1] A web of a non-woven fibrous fabric is produced by passing a web of a polymer film which has been uniaxially oriented in the longitudinal direction at a draw ratio of at least 4 : 1 but below that which causes the film to fibrillate spontaneously over and in contact with a positively driven roller, the peripheral surface of which has a series of offset, sharp, stiff protrusions arranged in a uniform pattern while applying sufficent pressure to the surface of the film opposite to that in contact with the protrusions by means of a second roller which is a presser roller to cause the protrusions to puncture the film and the formation of slits in the film parallel to the longitudinal axis of the film, the peripheral speed of the positively driven roller having the protrusions being maintained within the range of from 1À5 to 20 times the speed of the film. In the case of stereoregular polypropylene films draw ratios between 6 : 1 and 10 : 1, preferably 7 : 1 and 9 : 1 are desirable. The driven roller may be helically wrapped with card clothing having stiff sharp points. The presser roller is preferably a stiff bristled roller brush and may be an idler roller or may be driven at or near the peripheral speed of the driven roller or the speed of the film. The film material may be made of polypropylene, high density polyethylene, poly- 4-methyl-1-pentene, ethylene-propylene copolymers, polyesters or polyamides.
Patent GB-435306-A (GB)
Title: Reversible rotary fluid pressure motor
Filed: 1935-05-16
Abstract: 435,306. Rotary engines. CHICAGO PNEUMATIC TOOL CO., 6, East 44th Street, New York, U.S.A. May 16, 1935, No. 14381, Convention date, June 9, 1934. [Class 110 (ii)] A rotary reversible engine of the type shown uses the compressed gaseous driving medium to hold the sliding vanes outward against a cylinder liner 11, before the gas is led to an accumulator chamber 34, Fig. 4, which communicates with the inlet side of the working chamber 32. A rotary hand-operated valve 6 controls the flow of gas from a source to below the vanes, Fig. 11, and also the exhaust from the working chamber by way of ports 36, 6<h>, 10. Reversing the valve, secures reversal of the rotor direction. The inlet arc 15<a> supplying gas to the bottoms of the vanes is extended beyond the arc 25 which supplies the working chamber, so that the vanes are held out under pressure, after the working fluid is cut off from the chamber 32. Due to the pressure drop in the passages and accumulator 34, the force is greater radially on the vanes, than that used to drive the vanes. The vanes are deeper in the centre than at the sides, Fig. 11.
Patent GB-644027-A (GB)
Title: Improvements in or relating to partial oxidation of hydrocarbons
Filed: 1947-05-30
Abstract: Products mainly comprising aldehydes, ketones and phenols are obtained by admixing gaseous hydrocarbons with sulphur dioxide and/or sulphur trioxide in vapour form in the presence of a minor proportion of free oxygen and contacting the mixed gases with a contact mass comprising an adsorptive material while maintaining a temperature in the range from substantially 175 DEG  C. to substantially 450 DEG  C. Adsorptive materials specified are charcol, silica gel, fused porous silica, alumina, fuller's earth, bauxite, kieselguhr, aluminium silicates, hydrated aluminium and magnesium silicates, and they may be pre-treated with sulphuric acid, impregnated with salts or oxides of metals, of which a list is given, or subjected to a preliminary heat treatment.  Sulphur trioxide or sulphuric acid vapour may be used alone at the start of the operation.  The proportion of sulphur dioxide is preferably less than 20 per cent by volume in the reaction zone, only a small proportion of the hydrocarbon being oxidized per pass in a recycling system.  Superatmospheric pressures are preferred.  The gases leaving the reaction chamber are cooled and then contacted with water to remove oxygenated products and sulphur dioxide, which are recovered in a still.  Alternatively, the cooled gases may be contacted with liquid sulphur dioxide in the case where methane is being oxidized to formaldehyde, whereby two liquid phases, i.e. liquid sulphur dioxide and aqueous formaldehyde are formed, which may be separated and recovered by customary means. When the hydrocarbon to be used can be separated from its mixtures with nitrogen by selective absorption in an oil, air may be used as oxygen-containing gas, and the oil may be used as absorption fluid. Hydrocarbons specified are methane, ethane, propane, butane, isobutane, pentane, cyclic and aromatic hydrocarbons and petroleum fractions.  In examples: (1) a gas comprising methane, sulphur dioxide, sulphur trioxide (a smaller proportion than the dioxide), oxygen and inert gases was passed over heated and activated charcoal, silica or alumina, with and without metallic compounds; (2) ethane is similarly oxidized but without the trioxide and using activated charcoal or activated alumina impregnated with cerium and/or cobalt sulphate and silver nitrate; (3) propane is similarly oxidized but without the trioxide and using activated alumina impregnated with cobalt sulphate and silver nitrate; (4) isobutane is oxidized using activated alumina impregnated with ammonium molybdate and cobalt sulphate.  The products specified comprise formaldehyde, acetaldehyde, propionaldehyde, isobutyraldehyde and acetone. Specification 643,862 is referred to.
Patent GB-353886-A (GB)
Title: Improvements in the manufacture and production of vat dyestuffs of the isodibenzanthrone series containing chlorine and/or bromine
IPC: H01B13/004
Filed: 1930-01-25
Abstract: Halogenated isodibenzanthrones are prepared by treating isodibenzanthrone or chloro or bromo derivatives thereof with anhydrous metal chlorides or bromides which supply these halogens, if desired with the addition of further chlorinating or brominating agents, and/or substances which lower the melting-point of the said metal halides, and/or catalysts, and/or organic solvents or diluents which do not injuriously affect the activity of the metal halides. Suitable metal halides are the chlorides and bromides of iron, aluminium, antimony, or mercury or mixtures of these; alkali and alkaline earth metal halides are suitable for lowering the melting-point, and suitable organic solvents or diluents are halogen benzenes or naphthalenes, benzophenone, nitrobenzene, quinoline, pyridine or collidine. Iodine or other non-metals or compounds thereof are suitable catalysts.  The products dye violet to blue shades of good fastness properties, particularly to drops of water. In examples (1) isodibenzanthrone brominated in nitrobenzene is treated in trichlorbenzene with ferric chloride; (2) dibromisodibenzanthrone (prepared by brominating isodibenzanthrone in chlorsulphonic acid in the presence of iodine) is treated in trichlorbenzene with ferric chloride; mono-, tri-, tetra-, and pentabromisodibenzanthrone (prepared as above but by using one, three, four, and a little more than five molecular proportions of bromine respectively) may be similarly treated; (3) isodibenzanthrone is treated with a ferric chloride-sodium chloride melt, and a little iodine added and the mixture brominated; similar chlorbromo derivatives are obtained by treating bromoisodibenzanthrones with ferric chloride-sodium chloride or with ferric chloridesodium-aluminium chloride; (4) tetrabromisodibenzanthrone (prepared by treating isodibenzanthrone in chlorsulphonic acid with bromine in presence of antimony or mercury) is treated in nitrobenzene with ferric chloride.  Specification 325,525, [Class 2 (iii), Dyes &c.], is referred to.