baber/WOPTO huggingface dataset:
Patent GB-610987-A (GB)
Title: Improvements in or relating to the production of 3-methyl-pyridine
IPC: C07D213/12
Filed: 1946-04-18
Abstract: Catalysts comprise one or more of the metals nickel, cobalt, copper and silver in admixture with one or more of the oxides of aluminium, silicon, zirconium, thorium and the rare earth elements.  The metal oxides are all difficulty reducible oxides. The catalysts are prepared by coprecipitating the difficulty reducible metal oxide and the hydroxide of the metal, and then reducing the metallic hydroxide to the metallic state.  They may also be prepared by impregnating the difficulty reducible metal oxide with a solution of a salt of the metal, decomposing the metal salt to the corresponding oxide by ignition which is in turn reduced with hydrogen to the free metal. The nitrates or acetates of the metals are suitable as the salts for this method of preparation.  The catalysts are used as dehydration-dehydrogenation catalysts for the preparation of 3-methyl pyridine from allyl alcohol and ammonia, and may be regenerated by passing air over the heated catalysts, and metals partially converted to oxides are reduced with hydrogen.  In examples: (1) a catalyst comprising copper on activated alumina is prepared by evaporating to dryness aqueous copper nitrate to which alumina has been added, heating to form copper oxide which is reduced to copper with hydrogen; (2) and (3) similarly a catalyst comprising silver or copper and silver on activated alumina is prepared.ALSO:3-Methyl pyridine is prepared by reacting allyl alcohol with ammonia, e.g. in the vapour phase at a temperature within the range of 500 DEG  to 110 DEG  F., preferably 700 to 950 DEG  F.  The reaction may be effected in the presence of a dehydration-dehydrogenation catalyst, e.g. a catalyst comprising one or more of the metals nickel, cobalt, copper and silver with one or more of the oxides of aluminium, silicon, zirconium, thorium and the rare earth metals.  In the examples, 3-methyl pyridine is prepared by reacting allyl alcohol and ammonia in the presence of heated copper and/or silver on activated alumina.
Patent GB-591740-A (GB)
Title: Improvements in and relating to footwear
IPC: A43B21/30
Filed: 1945-05-14
Abstract: 591,740. Heels for footwear. THOMAS, A. P. L. May 14, 1945, No. 11996. [Class 17 (ii)] A resilient heel and arch support comprises a U or V-shaped member laid on its side with the bend under the arch portion of the shoe, the upper limb extending under the insole rearwardly towards the heel end and the lower limb adjacent to the ground. The space between the inner and outersoles may be filled with rubber before the resilient support is applied. A covering conceals the support. Fig. 1 shows one arrangement of the support 3 in a shoe between inner and outer soles 1, 2 and. Fig. 3 a corresponding view of the shoe when finished. A number of modifications of heel shapes in some of which the support has portions which contact one another under load and prevent overloading of the support is described. Specification 569,169 is referred to.
Patent GB-1067692-A (GB)
Title: Improvements in or relating to starch ethers in paper
IPC: C08B31/12
Filed: 1964-03-20
Abstract: Spray-dried wheat starch is etherified without gelatinization by suspending it in water and adding to the suspension sodium chloride and diethylaminoethyl chloride hydrochloride and then propylene oxide.  The mixture is agitated at 30 DEG  C. for 16 hours, then acidified with phosphoric acid, centrifuged, washed and spray-dried.ALSO:A paper contains, uniformly distributed among its fibres a cationic hydroxyalkylstarch ether of the formula: <FORM:1067692/D1-D2/1> where X is starch, R1 is alkylene or hydroxyalkylene, R2 and R3 are alkyl, aryl, aralkyl, cycloalkyl or heterocycloalkyl and R4 is hydroxyalkyl.  The ether is in the gelatinized state when used in making the paper, but gelatinization is avoided during the preparation of the ether. The ether may be added to the fibrous slurry from which the paper is made.  The preferred ether is diethylaminoethyl-hydroxypropylstarch, but several others are referred to.  Other additives may be used with the starch ether, e.g. rosin-alum size, a filler e.g. kaolin, titanium dioxide, calcium carbonate, magnesium carbonate or talc, a pigment, a dye, a wax emulsion or a latex emulsion.  The paper may be corrugated.
Patent GB-921525-A (GB)
Title: Improvements in or relating to diaphragms for isolating the reserve of fluid in fluid reservoirs associated with hydraulic circuits
IPC: F15B15/10
Filed: 1960-04-06
Abstract: 921,525. Hydraulic brake reservoirs. SOCIETE STOP. April 6, 1960 [Sept. 16, 1959], No. 12135/60. Class 103 (1). [Also in Group XXIX] A deformable diaphragm 1 for isolating fluid in a reservoir from contamination by water or by noxious gases from the atmosphere is made of waterproof deformable and elastic materials and follows automatically the variations in the fluid level. The diaphragm may be made of elastic rubber or of polyvinyl chloride. The Figure illustrates a reservoir 2 for feeding an hydraulic braking system wherein a diaphragm 1 in the form of a bellows is held by its flange 3 between the reservoir and its cover 4 and contacts the fluid over its outer surface. A rod 6 mounted in a boss 5 on the bellows slides freely through a hole 7 in the lid 4 to indicate the level of the fluid. A notch 9 on the rod 6 can take a circlip to hold the bellows in the dotted position whilst the reservoir is filling: A loading spring (not shown) may be placed inside this diaphragm or the resilient properties of the diaphragm material itself may be allowed to put pressure on the fluid.
Patent GB-818287-A (GB)
Title: Elastomers having improved elastic characteristics obtained from linear amorphous polymer alpha-olefins higher than propylene
IPC: C08F10/14
Filed: 1957-04-15
Abstract: A vulcanizable polymer is prepared by chlorosulphonating a linear polymer of an alpha-olefin which contains from 4 to 6 carbon atoms in solution in a chlorinated solvent to a sulphur content of from 6.3 to 3 per cent by weight and a chlorine content of from 2 to 10 per cent when the polymer is amorphous and 2-20 per cent when the polymer is at least partially crystalline. Specified polymers are those of alpha-butene, alpha-pentene and alphahexene.  The polymer may be dissolved in carbon tetrachloride and chlorosulphonated by reaction with chlorine and sulphur dioxide or by reaction with sulphuryl chloride in the presence of a chlorosulphonation catalyst such as pyridine.  The chlorosulphonated polymer may be vulcanized. Specification 810,023 is referred to.
Patent GB-733955-A (GB)
Title: Electric switches
Inventor: PRICKETT ALFRED DONALD
IPC: H01H61/06
Filed: 1953-05-04
Abstract: 733,955. Thermal switches. LUCAS (INDUSTRIES), Ltd., J. April 27, 1954 [May 4, 1953], No. 12261/53. Class 38 (5). [Also in Group XXXVIII] A thermal switch comprises a resilient metal strip a which is suitably shaped for deflection with a snap action between the position shown and a position in which contact is made between a contact piece c carried by strip a and a complementary contact piece d carried by a flexible metal strip e when a thermally extensible wire g, secured to but electrically insulated from strip a, extends under the heating action of a current flowing through it. When the current flow is interrupted (by opening switch t, or by the short-circuiting action of resistance rand the winding of electromagnet h) the contraction of the wire g returns the switch to the position shown.
Patent GB-163585-A (GB)
Title: Improvements in or relating to hydraulic variable speed transmission mechanism
IPC: F16D31/02
Filed: 1920-05-04
Abstract: 163,585. Walsh, R. S. May 4, 1920. Clutches and speed-varying mechanism.-In hydraulic variable-speed transmission mechanism of the radial revolving cylinder type, the flowcontrolling means consist of apertured sheves c surrounding the apertured pistons, and provided with ribs engaging rotatable rings r, which are engaged by rack bars u. The yokes h connecting opposite pistons are arranged as shown and each embraces a slipper k mounted on the crankpin j. An auxiliary reservoir with a spring- pressed plunger may be provided to accommodate fluctuations of volume in the liquid, or the crank case may be only partly filled with liquid, in which case each trunk piston has an air vent provided at its inner end.
Patent GB-703650-A (GB)
Title: Improvements relating to apparatus for use in connection with the manufacture of footwear by the adhesive bonded process
Inventor: MERCER FREDERICK GEORGE
IPC: A43D25/06
Filed: 1951-05-28
Abstract: 703,650. Attaching cemented shoe soles. LOTUS, Ltd. May 15, 1952 [May 28, 1951], No. 12421/51. Class 17(1) A process for conforming shoe soles to shape preparatory to their attachment to a shoe upper in a sole press is combined with apparatus for simultaneously tempering the sole and softening the adhesive coating thereon by immersion in a liquid. The press comprises upper and lower dies B, A, Figs. 1, 4, one on either side of the top of the trough 12 which contains the treating liquid, so as to treat soles for a pair of shoes. The dies are detachably mounted on plates 20, 24 and pressed together against the action of springs 23 by operating a dual treadle 281, and gauge means 373 set to shoe size by turning a notched setting disc until the appropriate notch is engaged by a spring plunger 411, are carried on a slotted bar 37 mounted on a central portion of the bed plate 20. Specifications 683,829 and 703,621 are referred to, the first mentioned Specification describing the apparatus for simultaneously tempering the sole and softening the adhesive coating.
Patent GB-254686-A (GB)
Title: Improvements in and relating to mercerising machines
IPC: D06B7/08
Filed: 1926-05-14
Abstract: 254,686. Norton & Co., Ltd., Sir J. F., (Assignees of Waggon-und Maschinenbau Akt.- Ges. Gorlitz). July 6, 1925, [Convention date]. Laterally-stretched travelling materials, treating with fluids; spraying travelling materials; vats, construction of.-Chainless mercerizing machines for fabric in the open width are arranged with stretching washing and rinsing apparatus so that the stretching devices are subdivided in the running direction of the fabric by being placed at different levels, so that those at the lower level are located in a treatment tank provided with devices for spraying both sides of the fabric. As shown, one stretching device b is placed at a lower level than the stretching device a, and is situated in the treatment tank c, the level of the liquid being adjustable by means of a pivoting overflow k. By turning the overflow to provide different heights for tapping off the liquid the stretching device b may be wholly, partly, or not immersed. The spraying devices f arranged to spray both sides of the fabric are fed from pumps g, h, i, the tank being compartmented by dividing partitions d, e. The pump g draws in fresh water and the pumps h, i are each fed from the liquid of the compartment in advance of it.
Patent GB-997028-A (GB)
Title: Improvements relating to acoustic and radio-frequency measuring systems including screened chambers
IPC: G01R29/10
Filed: 1963-03-29
Abstract: 997,028. Testing aerials. SIEMENS & HALSKE A.G. March 29, 1963 [March 29, 1962; March 30, 1962], No. 12469/63. Heading H4A. A screened room for testing acoustic or radio wave radiators is so dimensioned that, if r 1  is the distance between radiator and receiver and # 0  is the angle between once-reflected radiations and the direct radiator-receiver path, # 0  is not greater than 42 degrees, width a=r 1 /tan # 0 , length b=r 1 /sin # 0  and the height of the room above the direct path is b/2; the radiatorreceiver path is so arranged that reflexion paths r<SP>1</SP> 2a  and r<SP>1</SP> 2b  differ. The room may be entirely lined with wave absorbers or may be selectively lined as described in Specification 997,027; for radio waves the absorbers may be conical structures of graphite embedded in a substance in which the electrical resistance decreases from apex to base, the latter being at the wall surface, or may be plates of resinbonded paper arranged in an orthogonal manner and provided with electrically conductive layers, to form waveguide-like structures.
Patent GB-569632-A (GB)
Title: Improvements in means for driving conveyor worms
IPC: B65G33/34
Filed: 1943-08-04
Abstract: 569,632. Screw conveyers. DAY, C. C., CROMPTON, J., and MIRRLEES, BICKERTON & DAY, Ltd. Aug. 4, 1943, No. 12560. [Class 78 (i)] A screw conveyer is driven through a ring disposed concentrically to it and connected to the flight. The conveyer casing consists of two portions 4, 5 having flared ends which are spaced apart and have bearing rings 8, 9 fixed to them. A driving ring 12 disposed between the rings 8, 9 is attached by a lug 13 to the flight of the conveyer 1, and is formed with slots 17, Fig. 2, which receive pins 18 mounted on a driving cuff 14. In a modification, the driving cuff transfers the endthrust exerted by the ring 12 to a stationary bearing member.
Patent GB-1320990-A (GB)
Title: Photographic camera for flash cubes
IPC: G03B17/42
Filed: 1971-05-03
Abstract: 1320990 Photographic cameras BALDAWERKE PHOTOGRAPHISCHE GERATE U KUNSTSTOFF R GRUTER K G 3 May 1971 [4 May 1970] 12691/71 Heading G2A A photographic camera having a mount 2 for a percussive type flashcube is provided with a firing pin (5) Fig. 1 (not shown), linked by a non- linear linkage to a release slide 25 which is actuated by a release button (27). The linkage (as described, a pin 23 of the slide 25 and slot (22) connection) is such that a small initial displacement of the slide 25 produces a large displacement of the pin (5), which is stopped by a spring operated switching device 14-16, 19 and 20 when in contact with the firing spring (8) of a flash-bulb in the flash-cube, and the final shutter opening movement of the slide 25 causes the final small displacement of the pin (5) to operate the firing spring (8). In use, operation of film winding mechanism will rotate the mount 2 and position a tensioning lever 29 with its stop surface 39 against a fixed stop 38, thus partially tensioning a spring 31. Depression of the slide 25 moves the lever 29 in the same direction bringing lug 35 thereof into contact with a lug 36 of a plate 37 and also tensions the spring 31 and also the transmission member 19 via the pin 23 and slot (22) in the flange 21 of the member 19. This small initial displacement of the slide 25 produces a large rotation of the member 19, which in turn moves the pin (5) into contact with the firing spring (8), and also via a stop 46 and torsion spring 45, (forming a second switching device) rotates a locking lever 43 through 90 degrees. If the flash-bulb has already been fired, the pin (5) will not be stopped and the locking lever 43 will be rotated further so that the latter lies in the path of a lug 42 of the slide 25, thus preventing the latter from reaching the shutter release point. Assuming an unused flash-bulb is present, further depression of the slide 25 causes the lug 35 to slip off the lug 36, thus the tensioning lever 29 springs back, due to the spring 31, causing nose 30 to engage a shutter blade and nose 40 to hit the arm 16 to simultaneously fire the bulb and open the shutter. In another embodiment, Fig.3 (not shown), there is no automatic locking of the release slide (25) if a used flash-bulb is present, but the spring (20) is sufficient alone to fix the flash-bulb.
Patent GB-1428911-A (GB)
Title: Device for controlling the duct roller of a printing machine
IPC: B41F31/12
Filed: 1974-03-22
Abstract: 1428911 Printing machines HEIDELBERGER DRUCKMASCHINEN AG 22 March 1974 [31 July 1973] 12838/74 Heading B6C A device for controlling the duct roller of a printing machine comprises a first control element rotatably mounted on a reciprocable control lever 3 and carrying a cam roller 9, a transmission element 5 fitted to the shaft 1 of the duct roller so as to be coupled in one direction of rotation with the shaft 1, e.g. a freewheel arrangement and a second control element which comprises a guide cam for receiving the cam roller and is adjustable to vary the extent to which the reciprocating movement the lever 3 is transmitted to the transmission element. As shown, the guide cam has two portions, one, 14, being circular and centred on shaft 1, the other 13 being epicycloid. Alternatively, (Fig. 4, not shown), a single guide cam may be movable between two positions so providing the guides corresponding to portions 13 and 14 of Fig. 2. The position of cam plate 12 in Fig. 2 is adjusted by gear-wheel 18.
Patent GB-492109-A (GB)
Title: Improvements in tools for manipulating inner members of screw-threaded or like co-operating parts adapted to be fixed in the walls of vessels, pipes and the like
IPC: B25B27/00
Filed: 1937-05-05
Abstract: 492,109. Holding-tools. GENERAL ELECTRIC CO., Ltd., and SARSON, A. E. May 5, 1937, No. 12847. [Class 61 (ii)] A device for holding in position in a hole in the wall of a tank, pipe, &c. the inner of two co-operating flanged screw threaded &c. ring members 11, 13 whilst securing the outer of the members thereto comprises two resilient limbs with the ends bent to form outwardly extending arms 20, 21 and projections 18, 23 adapted to be interlocked to hold the ends of the arms in engagement with recesses 24 in lugs on the ring member 11, or the ends of the arms may be formed with pointed claws to hold the inner member. Specification 488,963 is referred to.
Patent GB-1122332-A (GB)
Title: Coal-mining installation
IPC: E21C29/00
Filed: 1966-03-23
Abstract: 1,122,332. Mineral-mining installations. STAMICARBON N.V. 23 March, 1966 [26 March, 1965], No. 12926/66. Heading E1F. To maintain constant the discharge rate of the face conveyer of a coal mining installation in which a mining machine is automatically moved to and fro along the conveyer at a rate when travelling in a direction opposite to the conveying direction of the conveyer faster than when moving in the other direction there is provided a control means for automatically reducing the speed of the machine when the machine is moving through the end part of its travel in the conveying direction of the conveyor.
Patent GB-1197869-A (GB)
Title: Brush and Brush Holder
IPC: H01R39/00
Filed: 1969-03-12
Abstract: 1,197,869. Brushes and brush-holders for dynamo-electric machines. BENDIX CORP. 12 March, 1969 [8 April, 1968], No. 12930/69. Headings H2A and H2E. Brush gear for a slip-ring 10 comprises at least one arcuate brush 16 loosely retained against a holding plate 28, Fig. 2, and urged towards the slip-ring by spring means such as a garter spring 18, the plate 28 having stops 20, 22 adjacent the ends of the brush which permit limited movement thereof with the slip-ring. A casing 26 surrounds the brushes and encloses terminals 25 on the plate 28. Fig. 4 shows a modification wherein a pair of parallel slip-rings 10, 10a are engaged by brushes 116, 116a retained against holding plates 128, 128a and biased by spring fingers 118, 118a punched out from the holding plates. A diode 11 interconnects the slip-rings to reduce sparking.
Patent GB-1443140-A (GB)
Title: Process for the preparation of 2-nitrobenzaldehyde and 2- nitrobenzylidenechloride lubricant for between-operation protection of metal surfaces from mechanical damage and atmospheric corrosion during cold working of metals and for cooling metals thereat
IPC: C07C201/12
Filed: 1975-03-27
Abstract: 1443140 2 - Nitrobenzylidene chloride and 2- nitrobenzalbehyde BAYER AG 27 March 1975 [28 March 1974] 12936/75 Heading C2C A process for the preparation of a 2-nitrobenzylidene chloride comprises reacting an alkali metal salt of a 2-nitrophenylpyruvic acid with an aqueous alkali metal hypochlorite solution. In a further embodiment the 2-nitrobenzylidene chloride is hydrolysed at a temperature of from 20 to 150 C. in the presence of water into a 2-nitrobenzaldehyde. Desirably the salt of the 2-nitrophenyl pyruvic acid is prepared by reacting 2-nitro toluene with an oxalic acid diester of the formula (COOR) 2  in which R represents an alkyl group of from 1 to 6 carbon atoms or an aralkyl group.
Patent GB-911915-A (GB)
Title: Improvements in and relating to photocopying and like reproduction machines
IPC: G03B27/24
Filed: 1958-04-24
Abstract: 911,915. Photocopying machines. OZALID CO. Ltd., and HALDEN, J. G. B. April 23, 1959 [April 24, 1958], No. 13005/58. Class 98 (2). In a diazotype or like photocopying machine, sheets can be conveyed by two conveyer systems in succession; between them are diverting means by which the sheets can be diverted directly from the first system to a delivery station, or allowed to pass on through the second system to a different delivery station. In the particular example described, after passing through the developing section of the machine, the sheets are delivered either through a front or rear exit, as required. In the drawing, an endless belt 3 passes round rollers 4, 6 and 7. A second belt 9 (actually a plurality of narrow belts) passes round rollers 10, 11. A third belt 16 (similar to 9) passes round rollers 17, 18. After passing the developing tank 1, the sheets are conveyed between belts 3 and 9 (forming the first conveyer system). A movable set of pick-off fingers 14 lie, in one position, with their points 13 in grooves in roller 10. The sheets, urged by a brush roller 24, pass over the fingers 14 and out of the front delivery aperture of the machine on to a tray 28. A hand-operated lever 23 can turn the fingers 14 on a shaft 21 to a second position, in which the points 13 are raised clear of belt 9. The sheets are now guided by the curved under-portion of the fingers 14 round into the second conveyer system, in which they are carried between belts 9 and 16, and pass out of the rear delivery aperture 20 on to a tray 29.
Patent GB-127458-A (GB)
Title: Improvements in or relating to Electric Furnaces.
Inventor: RONDELLI TITO
IPC: H05B3/64
Filed: 1918-08-10
Abstract: 127,458. Rondelli, T. Aug. 10, 1918. Resistance furnaces.-A furnace in which the heating-receptacle serves as the resistance is provided with at least one recessed terminal block of large size and small resistance to reduce heat losses and protect the connexions; material of higher resistance is placed between the crucible and block. In one form of furnace, a carbon or graphite crucible 1, Fig. 1, rests on a block 2 of similar material. A layer 3 of fine carbon, lamellar graphite, or the like is interposed between the crucible and the block to protect the crucible and regulate the resistance. The block 2 is surrounded bv a watercooled ring 4<1> conveying current, and is supported by a refractory base 5 partly fitting within it. A water-cooled connecting-ring 4 also surrounds the mouth of the crucible, which is closed by a massive stopper 7. Amorphous graphite or other reducing-material of low conductivity is filled into the space 9 between the crucible and outer walls 8, and into a space 6 between the terminal block and base. A modified furnace has a terminal block of larger use and smaller thickness. Another furnace has the base-piece 5 domeshaped and is mounted on trunnions; flexible conductors press contact-pieces against the watercooled rings. Fig. 3 shows a furnace chamber formed by placing two crucibles 1, 1<1> horizontally with their rims in contact.
Patent GB-360387-A (GB)
IPC: C10G1/06
Filed: 1930-04-29
Abstract: In the conversion of carbonaceous materials, such as coal, tars, mineral and tar oils, &c., into products of lower boiling-point, a colloidal solution or dispersion of a catalyst is employed.  The catalyst, e.g. colloidal tin, may be dispersed in the material to be treated and injected with hydrogen into the reaction vessel and subjected to increased temperature and pressure, or a colloidal solution or dispersion of the catalyst may be atomized into the carbonaceous material by means of hydrogen or by hydrogen-containing gases or vapours.