baber/WOPTO huggingface dataset:
Patent GB-801880-A (GB)
Title: Process for preparing methyl ethyl ketone from secondary butanol
Filed: 1957-04-12
Abstract: Methyl ethyl ketone is prepared by dehydrogenation of secondary butanol by a continuous process comprising vaporizing and heating the alcohol to 800-900 DEG  F. in a first heating zone, passing the heated vapour to a first reaction chamber packed with a metallic oxide dehydrogenation catalyst, the temperature within the chamber being maintained within the range 650 DEG  to 900 DEG  F. solely by the incoming vapours, passing the effluent vapours from the first reaction chamber through at least one further combination of heating zone and reaction chamber packed with the catalyst, under the same conditions as in the first combination of heating zone and reaction chamber and passing the effluent vapours from the last reaction chamber through a condensing zone and separat <PICT:0801880/IV (b)/1> ing therefrom methyl ethyl ketone.  As shown, the alcohol is preheated in a heat-exchanger 43 and passed via line 1 through tube 3 in a furnace 2 where it is heated in the convection section 44 and also, if desired, in a radiant section 45, to a temperature of 800-900 DEG  F. and the vapours then pass directly via line 4 into reactor 5 containing a fixed catalyst bed 6.  The partially converted effluent vapours from reactor 5 are passed via line 7 to a second heating coil 8 wherein the temperature of the vapours is again raised to 800-900 DEG  F. and the vapours then flow via line 9 into second reactor 10 and the same procedure is repeated via line 11, coil 12 and third reactor 14.  Additional heating and reaction cycles may be provided.  The effluent from the final reactor 14 is passed via line 15 and exchanger 43 to a condenser 16 and thence to a settler from which methyl ethyl ketone is separated from hydrogen.  If desired, part of the alcohol may by-pass the furnace via line 19.  The alcohol feed-stock used should preferably contain at least 90 wt. per cent of alcohol and less than 0.5 wt. per cent of water.  The catalyst, which is preferably a Group II metal oxide, may be zinc oxide, magnesium oxide, copper oxide, beryllium oxide or chromium oxide.  It may be promoted or stabilized by 1-15 per cent of an oxide of a Group III, IV or V metal such as a bismuth, antimony, zirconium, thorium, cerium or vanadium oxide, or sodium carbonate and may be supported on a carrier such as brass turnings, metal chips, aluminium, porcelain or calcined coke.  Elevated pressures may be used.  An example is given using as catalyst 92-96 wt. per cent of ZnO and 4-8 wt. per cent of Na2CO3 on calcined coke.
Patent GB-552133-A (GB)
Title: Improvements relating to textile fabrics
IPC: D06M13/224
Filed: 1941-09-19
Abstract: 552,133. Hair-cloth; fabric parchmentizing. BRITISH CELANESE, Ltd. Sept. 19, 1941, No. 12085. Convention date, Nov. 5, 1940. [Class 142] (iv) [Also in Group IV] A hair-cloth for stiffening wearing apparel comprises a woven fabric containing natural or artificial horsehair and threads comprising plasticised thermoplastic fibres and threads of non-thermoplastic fibres, the cloth adhering to non-thermoplastic fabrics when pressed in contact therewith under suitable conditions of temperature and pressure. In one form, a weft of natural horeshair is inserted in a warp comprising alternate two ends of cotton and one end of cellulose acetate yarn, the fabric is dipped into a solution containing dimethoxy ethyl phthalate and alcohol, the treated fabric is passed through nip rollers and is then dried. The artificial horsehair may be of regerenated cellulose, a cellulose ester or ether or a synthetic resin.
Patent GB-1337519-A (GB)
Title: Pressure regulator for compressed air reservoir
IPC: G05D16/06
Filed: 1972-03-15
Abstract: 1337519 Fluid pressure brakes J GACHOT 15 March 1972 [16 March 1971] 12098/72 Addition to 1235418 Heading F2F In an improvement in or modification of the pressure regulator of Specification 1,235,418 a resilient check-valve 66 is provided in a groove 61 between collars 64 and 65 to prevent return of air from the reservoir to the regulating chamber 18 during travel of the obturator 44. The end-plate 15 of diaphragm 14 is slidably mounted within the head end of measuring chamber 9 and fitted with an 0-seal 35, a spring 72 being interposed between the plate 15 and a cup 73 into which fits the extremity of a bolt 71 carried by the cover 36 of the regulator body.
Patent GB-1205904-A (GB)
Title: An improved lower roller for endless track vehicles
IPC: B62D55/096
Filed: 1969-03-07
Abstract: 1,205,904. Endless track rollers. NITTAI LEASE CO. Ltd. 7 March, 1969 [11 March, 1968], No. 12131/69. Heading B7H. A lower roller for an endless track comprises a hub H with end flanges 1, each flange having an annular rim 2, mounted on each flange is a wheel 3 which has an annular recess to cooperate with a rim, and has a flange 4; encircling each wheel 3 is a resilient ring 5 and a metal ring 6. End plates 8 having flanges 7 are fixed to the hub or the wheel 3 but allow the metal ring 6 to move radially. The resilient ring could be made of rubber or a synthetic resin.
Patent GB-500270-A (GB)
Title: An appliance for the application of thermo-therapeutic treatment
IPC: H05B3/34
Filed: 1937-04-28
Abstract: 500,270. Thermal therapeutic devices ; wearing-apparel. WEHNER, E. April 28, 1937, No. 12163. Void. Convention date, May 14. 1936. [Class 81 (ii)] [Also in Group VII] Appliances for the application of thermal therapeutic treatment consist of garments, bandages, &c. provided with receptacles for removable heating or cooling means. Fig.] 1 shows a vest or coat provided with a pocket, formed by double layers of material, for receiving a heating &c. device c, Fig. 3, shows a brassiere, and Fig. 4 a face bandage similarly provided with pockets.
Patent GB-142819-A (GB)
Title: Improvements in luminous signs comprising phosphorescing material
IPC: F21V9/16
Filed: 1920-05-03
Abstract: 142,819. Tschelnitz, H. Jan. 21, 1914, [Convention date]. Lighting, systems of.-Objects such as sign boards have the phosphorescence of the luminous paint &c. revivified at intervals by lamps which are automatically and periodically lit and extinguished by means such as a time switch or a thermal expansion switch. The background on which the luminous paint is laid may be made the same colour as the paint so that the representation seen by phosphorescence disappears in daylight or when the lamps are lit, and a different representation is seen; or only parts may disappear and other parts give the same representation. The switch may be adjustable so as to keep the lamps lit for the most efficient length of time.
Patent GB-600462-A (GB)
Title: Improvements in devices for measuring and setting-out angles on drawing boards
IPC: B43L13/04
Filed: 1944-06-28
Abstract: 600,462. Draughting-machines. KUMMER, F. June 28, 1944, No. 12312. Convention date, April 1, 1943. [Class 97 (iii)] A straight edge is mounted for angular and translatory movement over a drawing board by a system of guides and pulleys, angular position of the straight edge relative to a datum line being shown by relative movement of a scale and an indicator. In the apparatus shown, a scale of degrees 1 is mounted along the top edge of the board and a cord 3 secured to indicator 2 passes round a pulley 4 at a corner of the board, under pulley 5 at one end of the straight edge and over pulley 5<1> at the other end of the straight edge to the bottom right-hand corner of the board 6 through which it is passed to a tensioning device; a second cord similarly passes under the pulley 5<1> and over pulley 5 to a tensioning device at the bottom left hand corner of the board. The indicator 2 may be secured at any desired position by a set-screw 8, the straight edge then being free to move parallel to 'itself.
Patent GB-1020933-A (GB)
Title: Improvements in sheet feed mechanism
IPC: G03G15/00
Filed: 1963-03-28
Abstract: 1,020,933. Feeding sheets. RANK XEROX Ltd. March 28th, 1963 [April 2, 1962], No. 12325/63. Heading B6B. [Also in Division G2] Spaced pairs of co-operating gripper jaws 81, 85 are carried by a bracket 71 secured between endless chains and are actuated by means which support the grippers during actuation thereof to prevent twisting or bending of the bracket 71. The gripper jaws are mounted on pins 75 held by curved fingers on the rear edge of the bracket and urged together by springs 76. The jaws 81 are fixed relative to the bracket and may be formed integral therewith. The jaws 85 have cam surfaces 87 and are actuated by rollers 91, 93, Fig. 2 (not shown), positioned on opposite sides of the path of gripper travel. The rollers may be rotated so that their peripheries move at the same linear speed as the grippers. In an alternative construction, both jaws are pivoted to the bracket and have cam surfaces 87, Fig. 6 (not shown). One of the rollers 91, 93 may be replaced by a fixed plate. The jaws 81 have upstanding lugs 82 to position a sheet accurately.
Patent GB-353434-A (GB)
Title: A new or improved combined stopper and valve for bottles and other fluid containers
IPC: B65D47/24
Filed: 1930-04-22
Abstract: 353,434. Valve stoppers for bottles. HOPKINS, H. N., 211, Upper Thames Street, London. April 22, 1930, No. 12355. [Classes 21 and 125 (iii).] Relates to combined stoppers and valves for bottles &c. of the type having an air vent and draw-off passage which are simultaneously opened or closed by a manually operated valve. According to the invention the stopper comprises a solid moulded body 1 the upper part of which is divided from the lower part by a projection 12 so that the lower part can be employed as a plug. A slidable valve rod 3 passes through a central bore 2 and has a sleeve-like head 6 which surrounds a spring 8. An air vent passage 11 and a fluid delivery passage 10 extend lengthwise of the body and are simultaneously opened and closed by valve members 4. The spring 8 bears on a rubber seating washer 9 and a rubber sleeve 13 is provided on the plug part of the body. The passages 10, 11 open on opposite sides of the body, the liquid passage 10 at a higher part than the vent. In a modification both passages enter an internal chamber in the stopper. The valve member may comprise a ground glass disc, and the valve rod may be non-rotatable. Resilient packing 15 may be used with the valves; and a safety guard or bail may be fitted to prevent accidental operation of the head 6.
Patent GB-661275-A (GB)
Title: Improvements in or relating to knitted fabric
IPC: D04B1/26
Filed: 1946-11-19
Abstract: 661,275. Knitting. HEMPHILL CO. Nov. 19, 1946 [Dec. 8, 1945], No. 12374/48. Divided out of 661,263. Drawings to Specification. Class 74 (ii). The subject-matter of this Specification is contained in Specification 661,263. Claim is made to a suture structure, in a split foot stocking, joining a widened portion of the sole and the corresponding portion of the instep, composed of sole and instep yarns, said structure being made up of suture units each in a different wale and each comprising, in one wale, two consecutive loops of one of said yarns followed by two consecutive loops of the other of said yarns, each suture unit of four loops being in correspondence with two consecutive courses of the instep and sole.
Patent GB-1396362-A (GB)
Title: Rotary electrical machines having semiconductor devices  and clamping mechanisms therefor
IPC: H02K11/04
Filed: 1972-03-16
Abstract: 1396362 Mounting semi-conductor devices INTERNATIONAL RECTIFIER CO (GREAT BRITAIN) Ltd 17 Aug 1972 [16 March 1972] 12401/72 Heading H1K [Also in Division H2] In a rotary electrical machine, e.g. a dynamoelectric machine having a semi-conductor, e.g. rectifier device 10 mounted on a rotating part, e.g. a rim 11 of the machine at a position radially spaced from its axis of rotation, clamping pressure for electrical contact purposes is applied to the device by a mechanism comprising a lever 17 pivotally supported on the rotating part by a fulcrum 18 spaced from the rotation axis, the lever having a pivotal axis transverse to the radial direction through the fulcrum and comprising a first arm 16 carrying a contact pad 15 abutted against a radially-inwardly-facing polepiece 14 of the device and a second arm 23 extending from the fulcrum in the opposite direction from the first arm and being associated with a balancing mass, e.g. a flexible electrical conductor 24; a spring means, e.g. a compression spring 21 acts to press the pad 15 against the polepiece 14 with a pressure which when the machine is stationary is not less than a specified minimum value, whilst when the machine is rotating centrifugal force on the second arm 23 and its balancing mass at least partly compensates for the increase in clamping pressure on the device which is caused by centrifugal force on the first arm 16 and its clamping pad 15. The conductor 24 is electrically connected to the device through the lever 17, and the maximum clamping pressure may be adjusted by a trimming weight 25 adjustable along the first arm 16.
Patent GB-399247-A (GB)
Title: Improvements in cylinder grinders
IPC: B24B33/08
Filed: 1932-04-30
Abstract: 399,247. Internal grinding. LAKE, A. E., 113, Dunmow Road, Bishop's Stortford, Hertfordshire. April 30, 1932, No. 12442. [Class 60.] A cylinder-grinder consists of a body having a part A1 and a sleeve A2 secured thereto by pins A3 driven through a universal joint C by a shaft B. The body has therein spaced slots A9, each of which receives two projections M1, M2 on a carrier L1 for an abrasive member K1, the projections having faces M5, M6 at right angles to the axis of the tool and resting on faces All, A12 of the part A2, and also having oppositely inclined faces M7, M8. The inclined faces are engaged respectively by members D, E slidable on the body, the member D carrying a central bolt F carrying a nut G and a spring N whereby the distance apart of the members D, E may be adjusted to adjust the radial position of the abrasive members. The faces All, A12 are at a slight angle to allow the carriers L1 to tip slightly ; the parts of the members D, E which engage the faces M7. M8 may be curved, and the carriers may have a slight amount of endwise play, whereby the abrasive members may conform to slightly tapered cylinders. A spring may be placed at each end of the bolt F between the body and the member D, E at that end. According to the Provisional Specification, the inclined planes may be arranged on the members D, E.
Patent GB-528009-A (GB)
Title: A new or improved extractor ventilator or cowl
IPC: F23L17/02
Filed: 1939-04-26
Abstract: 528,009. Chimney and ventilator cowls. LUDLOW, E. R. April 26, 1939, No. 12477. [Classes 25 and 137] An extractor ventilator or cowl comprises an outwardly flared extension l on the stack pipe k, a domed cover m of approximately the same diameter spaced away from the extension l, and one or more intermediate flared annular baffle members n of approximately parabolic cross-section arranged between the extension and cover to form annular passages tapering off in width towards their open-ends, each annular passage being surrounded by an annular shield or suction ring r, s of curved or shallow trough form with its concave face outwards. The stack pipe k and lower parts of the baffles n, preferably extend a short distance upwards in the extension l and upper parts of the baffles to form water traps having escape apertures g. According to the Provisional Specification the baffle member n may be omitted.
Patent GB-449049-A (GB)
Title: Improvements in and relating to negative electrical resistances
IPC: H01C7/04
Filed: 1935-04-25
Abstract: 449,049. Variable resistances. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. April 25, 1935, No. 12482. Convention date, April 30, 1934. [Class 37] A resistance having a falling potential-current characteristic and a very small time constant consists of a conductor 1 of homogeneous non- porous material having a negative temperature coefficient, the axial length and minimum diameter of the conductor being of the order of a tenthof a millimetre or less, and heat-dissipating metal electrodes 2, 3 preferably of silver, the extension of the electrodes transversely to the direction of current flow in the conductor 1 being large compared with the diameter of the conductor. The conductor 1 may be surrounded by heat-insulating material 4, which may take the form of a capillary glass tube surrounding the conductor, from which a disc a, b may be cut and ground to the required dimensions. Preferably one side of the disc is ground and secured to one of the electrodes 3 through a firmly adhering metal layer 6, Fig. 5, after which the disc is ground to the required dimensions and the other electrode applied. The insulating layer may be crystallized on to the conductor by dipping the latter into fused sodium or silver chlorides or into liquid sulphur or other insulators fusing below 1000‹ C. The conductors may be made by sintering finely powdered oxides fusing at a high temperature, such as cupric oxide or uranium dioxide. Specification 409,174 is referred to
Patent GB-1508222-A (GB)
Title: Derivatives of pyrazolopyridines
IPC: C07D471/04
Filed: 1975-03-25
Abstract: 1508222 Pyrazolopyridine derivatives E R SQUIBB & SONS Inc 25 March 1975 [29 March 1974] 12483/75 Heading C2C Novel compounds of the Formula I wherein R 1  is hydrogen, alkyl, phenyl, benzyl or furfuryl; R 2  is hydrogen, alkyl or phenyl; R 3  is hydroxy, alkoxy or the group -NR 6 R 7 ; R 4  is alkyl or phenyl; R 5  is hydrogen, alkyl or phenyl; R 6  and R 7  each is hydrogen, or alkyl, n is 0, 1 or 2, wherein alkoxy and alkyl radicals contain 1 to 7 carbon atoms, and physiologically acceptable acid addition salts thereof, may be prepared by cyclizing a compound of the Formula V to form a compound of the Formula I in which R 3  is hydroxy, optionally reacting the compound with an alkyl halide to form a compound I in which R 3  is alkoxy, optionally reacting this product with an amine R 6 R 7 NH to form a compound I in which R 3  is -NR 6 R 7  and optionally forming a physiologically acceptable acid addition salt thereof. The intermediates of the Formula V are prepared by reacting an appropriately substituted 5-amino pyrazole with a haloalkanoyl acetic acid ester or an alkanoyl acetic acid ester to yield a compound of the Formula IV wherein X is halogen or hydrogen and R 5  is other than hydrogen and thereafter when X is halogen reacting the product with or when X is hydrogen reacting the product with strong base and 3 - [(1 - Furfuryl - 5 - pyrazolyl)amino] - 2- phenylsulphonylacrylic acid ethyl ester is produced by reacting 5-amino-1-furfurylpyrazole with 3 - ethoxy - 2 - phenylsulphonyl acrylic acid ethyl ester. Pharmaceutical compositions of compounds I with the usual excipients show CNS depressant activity when administered orally or parenterally and show anti-inflammatory activity when administered orally, parenterally or topically. The compounds I also increase the nitrocellular concentration of adenosine-3<SP>1</SP>,5<SP>1</SP>-cyclic monophosphate.
Patent GB-1135928-A (GB)
Title: Quilted film process
IPC: B29C65/00
Filed: 1966-03-22
Abstract: 1,135,928. Embossed laminated films. MOBIL OIL CORP. 22 March, 1966 [24 March, 1965], No. 12531/66. Headings B5A and B5N. [Also in Divisions B6 and B8] Embossed laminated films are produced by continuously feeding at least two layers 11, 11<SP>1</SP> of a thermoplastic film material into superposed engagement with the surface 15 of a moving support 14 to which the film material is adherent, said surface being in the form of a plurality of intersecting areas, the temperature of the surface being sufficiently high to permanently emboss those areas of the films not supported on the surface and simultaneously to heat-seal the areas of the films supported on the surface, and therafter withdrawing the laminated film from the support. The moving support is suitably a roller, and the two films may be both pressed on to the support before heating as shown, or one film may be embossed before the second film reaches the roller, the two films then being heat-sealed. This latter method produces laminates having larger air pockets. The films are suitably polyethylene, and the preferred heating means is I.R. radiation. The adhesive is suitably impregnated with I.R. absorbing material, e.g. carbon black. A roller 20 is preferably arranged to nip the laminated film 19 to ensure that the films remain sealed.
Patent GB-1217992-A (GB)
Title: Carcase for an electrical machine
Inventor: THEVENARD JEAN EUGENE
IPC: H02K5/22
Filed: 1969-03-10
Abstract: 1,217,992. Releasable fastenings. COMPAGNIE ELECTRO-MECANIQE. 10 March, 1969 [11 March, 1968], No. 12547/69. Heading E2B. [Also in Divisions F2 and H2] The casing of a dynamo-electric machine has a polygonal external cross-section, at least one external face having at least one T-shaped groove, such as 1, Fig. 1, formed therein by means of which an attachment can be connected to the casing. As shown in Fig. 5, a terminal box is mounted on the casing by hooks 6, 7 and lugs 8, 9 which engage a pair of T-shaped grooves. Alternatively, Fig. 6, the grooves may receive nuts 11 engageable by bolts 12 for mounting the casing on a wall 10.
Patent GB-561083-A (GB)
Title: Mining machines for simultaneous cutting and loading
IPC: E21C27/02
Filed: 1942-09-05
Abstract: 561,083. Mining machines. MOORE, M. S., and MINING ENGINEERING CO., Ltd. Sept. 5, 1942, No. 12554. [Class 68 (i)] In a mining machine with overcutting and undercutting jibs 12, 14, with their cutters running in opposite directions, the cutting faces are so arranged that the cutting action in each case tends to pull the jibs forwardly so as to counteract movements tending to twist the machine out if its course ; wheh a shearing jib 3 is provided, its cutting face is similarly arranged.' In the reversible machine shown, the shearing jib 3 is carried on inclined pivots 6 on an arm 7 carried on vertical trunnions 8 at the end of the jib of the loader conveyer 1, the jib being adjusted by an arm 9 and handwheel 10 ; the outer end of the overcutting jib 12 is attached to the shearing jib by brackets 15. Specifications 116,229 and 273,157 (both in' Class 68 (i)], and 516,810 are referred to.
Patent GB-1478833-A (GB)
Title: Pump sprayer
IPC: F04B9/14
Filed: 1976-03-29
Abstract: 1478833 Reciprocating pumps DIAMOND INTERNATIONAL CORP 29 March 1976 [19 Nov 1975] 12592/76 Heading F1A A spray pump comprises a stepped cylinder 11, 13 with pistons 12, 14 movable downwardly against a spring 32 by depressing a button 20, a discharge valve-member 31 in piston 12 being connected to piston 14, so that when the pressure in pumping chamber 33 is sufficient, piston 14 moves downwardly against spring 32 and unseats valve-member 31 for discharge to be effected via passage 19a and nozzle 21, air being released from the pumping chamber 33 for priming either by a protuberance (45), Figs. 3 to 5 (not shown), on the wall of cylinder 13, which deforms the skirt of piston 14 towards the end of its discharge stroke, or by a groove in the wall of cylinder 13 forming a by-pass for air escape past piston 14. The container on which the pump is mounted is vented via passage 42 and a clearance between actuating stem 19 and cap part 18, the clearance being closed by shoulder 43 in the rest position shown.
Patent GB-592557-A (GB)
Title: Shutter control device for moving picture apparatus
IPC: G03B9/10
Filed: 1945-05-18
Abstract: 592,557. Kinematograph apparatus. WEISSBRODT, J., and BROIDO, J. J. May 18, 1945, No. 12608. Convention date, June 3, 1944. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 18, 1945.] [Class 97 (i)] A shutter control device comprises two concentric shafts 2, 4 carrying pinions 1, 3 with oppositely inclined helical teeth engaging respectively two sets of superimposed oppositely inclined helical teeth on an intermediate pinion 13. The shafts 2, 4 carry shutter blades 7, 8 and a relative rotation of the blades is produced by an axial movement of the pinion 19 on the shaft 15 produced by a rack and pinion device 17, 18. The shutter is driven through gearing 11, 12.