baber/WOPTO huggingface dataset:
Patent GB-892213-A (GB)
Title: Conversion of electrical signals into visual symbols
Inventor: BENJAMIN RUDOLF
IPC: G09F9/37
Filed: 1957-06-19
Abstract: 892,213. Electric selective signalling systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 12, 1958 [June 19, 1957], No. 19253/57. Class 40 (1). Slides A, B, C having numbers printed on them as transparencies in an opaque background are superimposed over a luminous aperture represented by the dashed outline and three binary input pulses selectively actuate associate solenoids so that combinations of the upper or lower rows of numerals are over the aperture. In another embodiment the numerical arrangements are superimposed by selections from a pattern of all the numerals, Fig. 3 (not shown).
Patent GB-1046618-A (GB)
Title: Catalysts and catalytic process
IPC: C08F10/02
Filed: 1963-05-15
Abstract: A process for the polymerization of a hydrocarbon stock including at least one ethylenically unsaturated hydrocarbon containing 2-4 carbon atoms, to produce a solid polymer comprises contacting the stock with a catalyst comprising a transition metal oxide on an oxide support to which has been added AlK3, where R is hydrocarbon, the support oxide having a particle diameter of <0.2 m  and an apparent density of <0.1 gm./c.c., polymerization being effected at superatmospheric pressure at 0-350 DEG  C.  Specified feedstocks include ethylene, propylene, 1-butene, 1-pentene, 1-hexene and mixtures thereof. Also mentioned are 1:3 butadiene, isoprene, 1:5-hexadiene and styrene. Examples are given.ALSO:A polymerization catalyst is made by extending a transitional metal oxide on a support oxide which has a particle diameter of less than 0.2m  and an apparent density of less than 0.1 gram/cc. Specified transition metals are Zr, Os, Ni, Ti, Hf, Fe, W, Co, Mo, V and Cr.  Oxide carriers are Al2O3, MgO, TiO2, B2O3, ZrO2, SiO2 or composites e.g. alumino-silicates.  D2O5 may be added to the carrier Trialkyl aluminium compounds may be added to polymerization catalysts as above to effect polymerization of olefin containing feed stocks.  Examples are given.
Patent GB-1464009-A (GB)
Title: Polyetherimides and a method for making same
IPC: H01B3/42
Filed: 1974-05-02
Abstract: 1464009 Polyetherimides GENERAL ELECTRIC CO 2 May 1974 [22 June 1973] 19331/74 Heading C3R [Also in Division B2] Polyetherimides have formula where R is (a) optionally halogenated C 6-20  aromatic hydrocarbon, (b) alkyl or C 2-8 - alkylene-terminated C 2-20  polydiorganosiloxane, or cycloalkylene, or (c) where Q is O, CO, SO 2 , S, or C x H 2x  where x= 1-5, m=0-1, and n=2-2500. They may be prepared by reacting 2,2<SP>1</SP>,3,3<SP>1</SP>-tetracarboxydiphenylether dianhydride with H 2 NRNH 2  in organic solvent at #130‹ C. while removing water of reaction, e.g. during reflux or by molecular sieve. They may be recovered by precipitating in methanol. They can be used for injection-moulding and may contain glass fibres. Solutions in a phenol may be used for coating wire, e.g. of Cu.
Patent GB-834843-A (GB)
Title: Improvements in or relating to carbon paper
Inventor: SEAWARD JOHN ALBERT
IPC: B41M5/46
Filed: 1957-06-19
Abstract: 834,843. Coloured carbon paper. CARIBONUM Ltd. Jan. 14, 1958 [Jan. 19, 1957], No. 19338/57. Class 96. Carbon paper or the like carrying a coating of a transfer material suitable for reproduction by infra-red irradiation has, in its coloured transferable coating from 15 to 20% by weight of graphite, so that the colour is not spoiled, although the suitability for thermo-sensitive reproduction is improved. An example specifies carnauba wax, ceresin-wax, mineral oil, red lake and graphite.
Patent GB-147456-A (GB)
IPC: H01H33/04
Filed: 1920-07-07
Abstract: 147,456. Allgemeine Elektricitats- Ges. April 1, 1914, [Convention date]. Oil switches. - The movable contact f of an oil - break switch, operated with quickaction by pressure of the spring g produced by the operating-lever h, is in the form of a light-weight pin passing through an orifice in an oil-filled explosion chamber c located within the main oil container a and enclosing the fixed contact b. The opening movement is accelerated by the gas p r e s s u r e generated by the spark. Owing to its light weight, the contact pin is driven out of the explosion chamber before the gas pressure therein becomes dangerous.
Patent GB-1500272-A (GB)
Title: Intake screens for suction pipes
IPC: B01D35/02
Filed: 1975-04-22
Abstract: 1500272 Suction pipe end filter SYKES PUMPS Ltd 22 April 1975 [2 May 1974] 19380/74 Heading BID A suction pipe intake screen comprises two semi circular pieces having outer and inner peripheral recesses. The two pieces are held together by a fastener (e.g. a rubber ring 21) lodged in the outer facing recess 20. The inner recess 18 allows the screen to be coupled to the flange (e.g. 11A, 11B or 15A) of a suction pipe. Liquid flows through apertures 22.
Patent GB-418643-A (GB)
Title: Improvements in buckles or slides for suspender bands, brace webbing and other bands or the like
IPC: A41F3/02
Filed: 1934-07-02
Abstract: 418,643. Buckles. WALKER, Ltd., T., WALKER, G. T., and WOOD, H. H., St. Paul's Square, Birmingham. July 2, 1934, No. 19430. Addition to 400,718. [Class 43.] A lever buckle, or slide of the kind described and claimed in the parent Specification has the rear depending part of the clamping lever 6 formed as a flange 11 which is bent or rolled in a forward direction to produce a forwardly extending arm or tongue 12, and an intermediate rounded surface or edge 13 which first engages the material of the band and is then forced over a dead centre as the lever 6 is moved into the operative position.
Patent GB-400362-A (GB)
Title: Improvements in fishing reels
IPC: A01K89/015
Filed: 1932-07-09
Abstract: 400,362. Fishing. SMITH & WALL, Ltd., and BOSWORTH, J. H., Whitehead Road, Aston, Birmingham. July 9, 1932, No. 19459. [Class 48.] A brake for a fishing-reel comprises a spring- pressed lever 2, which carries a brake shoe 4, and a finger lever 9. When the lever 9 is moved to the position shown, the shoe 4 engages the rim 14 of the drum plate 13. The drum is mounted between cones 16, 20. The cone 20 is adjustable and is held in position by a lock nut 22.
Patent GB-607872-A (GB)
Title: Anchor nuts
IPC: F16B37/04
Filed: 1945-07-30
Abstract: 607,872. Anchor nuts. SWANSTROM, K. A. July 30, 1945, No. 19470. Convention date, July 26, 1944. [Class 89 (i)] The retainer member of an anchor nut is stamped from metal or other sheet material with a polygonal opening 4 for the nut 2 which is formed with a flange 18 that is a sliding fit in the opening and that engages under recesses 12 in the bent-up side walls 8 of the retainer to limit axial movement of the nut. To increase the effective thickness of the retainer at points of engagement with the nut flange, the metal is embossed at 3<1>. The side walls 8 have part-conical depressions 10 stamped therein yieldingly to engage the nut. Further axial location may be secured by dimples 25 in the side walls that engage a conical surface 20 forming a groove between the nut body and flanges. The bar of the retainer is dimpled and perforated at 16 for attachment to one of the parts to be connected.
Patent GB-1464473-A (GB)
Title: Device for automatic cutting of thread in sewing machines
IPC: D05B65/02
Filed: 1974-05-03
Abstract: 1464473 Cutting threads, needle plate H SCHIPS 3 May 1974 [7 May 1973] 19474/74 Heading DIG  A needle or stitch plate 3 and a feed plate 5 are provided with knife edges 12 (and 23, Fig. 3 not shown) which co-operate to sever a thread 19 drawn around the work 12 to be stitched and down a pneumatic (vacuum) tube 13 when the work is positioned prior to stitching. The plate 3 is of trapezoidal section and is engaged by the sloping sides of a slot 6 in the feed plate to provide a sliding dovetail connection therebetween. The needle 9 reciprocates through a guide 10.
Patent GB-1480024-A (GB)
Title: Card index assembly
IPC: B42D5/04
Filed: 1975-05-08
Abstract: 1480024 Card indexes A BINA 8 May 1975 [10 May 1974] 19500/75 Heading B6E An index card device comprises a support member 10 having a pair of spaced parallel guide ways 12 and a stack of index cards 11 provided along opposite edges with pairs of notches 13 to 16 for selective engagement with the guideways. The notches along opposite edges have different depths to make the cards protrude to different heights. Portions of cards between notches may constitute index tabs and the opposite faces of the tabs may be differently coloured.
Patent GB-613113-A (GB)
Title: Improvements in or relating to cocks
IPC: F16K1/02
Filed: 1945-07-31
Abstract: 613,113. Manually - actuated valves. RENOUT, J. July 31, 1945, No. 19573. Convention date, Oct. 29, 1941. [Class 135] In a cock, particularly a cock made of moulded plastic material, and of the type in which a screw thread 7 in a cylindrical member 6 coacts with threads on the stuffing-box 4 for actuating a spindle 1 carrying a closure member 2, and in which the opening of the closure member is limited by the engagement of a shoulder on the spindle with a shoulder 4a in the box, the lower threads in the member 6 are omitted whereby the member is disengaged from the threads on the box just before the cock is fully open to avoid straining the spindle &c. The spindle passes through the stuffing-box and has a squared outer end passing through a square hole in the member 6, the latter being retained on the spindle by a nut 10. Threads may be omitted from the upper end of the box instead of from the mem- 6. The Specification as open to inspection under Sect. 91 comprises also a cock of a similar construction but in which no means is provided for limiting the opening of the cock, nor are any threads omitted from either the member 6 nor the stuffing-box. This subject-matter does not appear in the Specification as accepted.
Patent GB-1471083-A (GB)
Title: Process for preparing a printing master
IPC: G03F7/00
Filed: 1975-05-09
Abstract: 1471083 Coated products XEROX CORP 9 May 1975 [27 June 1974] 19575/75 Heading B2E [Also in Divisions B6 and C3] A printing plate blank comprises a substrate which carries a coating of a silicone gum containing two curing agents, each activatable under different conditions, one of the curing agents having been activated to partially cure the gum to a non-tacky condition. Activation of the other curing agent completes the cure. The curing agents may be activated at different temperatures, or one by light and one by heat. The substrate may be paper, aluminium, polycarbonate or nylon. In Example I a polydimethylsiloxane gum is mixed with an acetone oxine blocked toluene-2, 4- diisocyanate as lower temperature active curing agent, and a bis-phenol adduct of methylene bis(4-phenyl isocyanate) as higher temperature active curing agent. This composition was dissolved in a mixture of benzene and tetrahydrofuran, and drawbar coated onto aluminium. The low temperature curing agent was then activated, and the partially cured blank used to form an imaged master. In Example III, the low temperature curing agent of Example I is replaced by methyl phenyl diazidosilane. In Example V, the silicone polymer contained 0.2 wt. % methylvinylsiloxy pendant sites, and benzoyl peroxide (lower temperature active) and di-t-butyl peroxide (higher temperature active) were used as curing agents.
Patent GB-427595-A (GB)
Title: Improvements in or relating to braiding machines
IPC: D04C3/14
Filed: 1934-07-02
Abstract: 427,595. Braiding-machines. DEHN, F. B., 103, Kingsway, London.-(Textile Machine Works; Wyomissing, Pennsylvania, U.S.A.) July 2,1934, No. 19479. [Class 74 (i)] A device for letting-off the yarn of a braiding bobbin includes interacting yarn supported and detent members 37, 31. The Figure shows the invention as applied to a yarn supply 45 composed of two or more strands 43, 44, unwound simultaneously and each supporting a tension weight 33 and a common bifurcated yarn tension lever 37. As the yarn is used up the lever 37 rises until a cam surface 14<a>, which continually engages the end 15<a> of the detent 31, unlocks the bobbin. Should a yarn be severed the corresponding weight 33 drops and becomes wedged between the pawl end 32 and a post 36 so that the bobbin cannot be unlocked. The unsevered yarns continue to be used up and are eventually broken by the increase in tension, whereupon the lever 37 falls into the path of a stopmotion trip lever. When the yarn supply carries a single yarn a single-armed lever 37 is used and the detent and the lever 37 are acted on by a common spring.
Patent GB-187945-A (GB)
Title: Improvements in and relating to waste preventing taps or valves
IPC: G05D16/18
Filed: 1922-07-17
Abstract: 187,945. Banerjee, R. S. K. Oct. 22, 1921, [Convention date]. Valves actuated by auxiliary pumps.-A waste preventing valve has an adjustable weighted buoyant valve member adapted to slide in a cylinder reciprocated by a hand lever and to which water is admitted through an adjustable orifice on the top of the cylinder. The valve face i<1> co-operates with a removable seat i adapted to be replaced by others of a different size to regulate, the discharge and is mounted on the buovant member i which is provided with a, flange t<1> adapted to receive loose flanges of different sizes. The reciprocating cylinder g has an extension g<1> arranged to engage a lever j loaded by a spring m and actuated by an external handle l. The top of the cylinder is provided with two orifices, one adjusted by inserting pins r of varying size which also keep the hole clean and the other adjusted by a pin q pinned to the extension g<1> at q<2> and supported by a bracket q<1> and adjusted by grinding the point. The cylinder is guided by ribs h and has its stroke regulated bv an adjustable stop n. The outlet d which may be curved upward or downward is regulated by a screwed member o and the inlet is fitted with a cock c constructed so as to adjust itself automatically to the pressure conditions. In a. modification, the cylinder is moved by means of a screwed spindle.
Patent GB-355880-A (GB)
Title: Improvements relating to sound reproducing and like instruments
IPC: G11B3/46
Filed: 1930-06-27
Abstract: 355,880. Gramophones &c. CELESTION, Ltd. and TYRRELL, S. J., 145A, London Road, Kingston-on-Thames. June 27, 1930, No. 19660. [Class 40 (ii).] In an electromagnetic soundrecording or reproducing device, such as a gramophone pick - up, the stylus or recording tool is held in position by a quickly releasable device comprising a member urged by spring pressure against the stylus in such a manner that the point of contact of this member with the stylus forms the pivot about which the stylus vibrates. The invention is shown as applied to a pick-up as described in Specification 356,353, [Group XXXIX], in which the armature 10 consists of a thin plate of magnetic material mounted between two pads 20 of rubber &c. so that it can vibrate in its own plane. The stylus 8 rests in a groove 9 in the armature, and abuts against a stop (not shown), formed at the inner end of the groove. A plate 5 of phosphor bronze is screwed at 6 to the permanent magnet 2, and is shaped like a shield with a pointed end 7, which end bears resiliently against the stylus and forms the pivot about which the stylus vibrates. The stylus may be quickly disengaged by depressing a button 12 which has a pin 11 held lightly against the plate 5 by a spring 13. The plate 5, instead of being made of springy material, may be a rigid member pressed against the stylus by a spring. Instead of providing a device such as the button 12 for releasing the stylus, the pick-up may be so arranged that such release is effected by raising the pick-up from the record, as in the construction shown in Fig. 5. In this arrangement, the pick-up is pivoted at 16 and is normally pressed down by a leaf spring 18 so that a pivoted plate 15 is urged into engagement with the stylus 8 by a spring-pressed plunger 14.
Patent GB-1033378-A (GB)
Title: Stable injectable protamine-active solutions
Inventor: DYKE WILFRED JAMES CECIL
IPC: A61K47/20
Filed: 1962-05-22
Abstract: Protamine-active compounds are prepared by heating together, in aqueous alkaline solution, protamine or an acid addition salt thereof and a formaldehyde-bisulphite or formaldehyde-sulphoxylate complex. The reactants are preferably heated above 40 DEG  C., advantageously at 90-100 DEG  C., and at a pH of 9.5 to 13.  The product can be precipitated from solution by addition of a water-miscible organic solvent, e.g. an alcohol such as ethanol. The formaldehyde complex is preferably that obtained with an alkali metal (e.g. Na or K) bisulphite or sulphoxylate. Suitable salts of protamine include the hydrochloride, hydrobromide, phosphate, nitrate, citrate, tartrate and sulphate.  In examples, the protamine used is salmine (from salmon) and clupeine (from herring).ALSO:Aqueous protamine-active injectable solutions of improved stability and useful as antidote for excess heparin administration comprise protamine and/or a physiologically acceptable acid addition salt thereof in simple admixture, or in chemical combination, with a formaldehyde-bisulphite and/or formaldehyde-sulphoxylate complex.  The protamine combines with the formaldehyde complex when the substances are heated in aqueous solution at alkaline pH.  Protamine salts specified are the hydrochloride, hydrobromide, phosphate, nitrate, citrate, tartrate and sulphate.  The formaldehyde complex is preferably a complex with an alkali metal, e.g. sodium or potassium, bisulphite or sulphoxylate.  The protamine used in the examples is salmine (derived from salmon sperm) and clupeine (derived from herring).
Patent GB-1287080-A (GB)
Title: Improvements in and relating to rotary cutting tools, more particularly hobs, having exchangeable cutting elements
Inventor: MOEBIUS MARTIN
IPC: B23F21/16
Filed: 1971-06-09
Abstract: 1287080 Hobs WERKZEUGKOMBINAT SCHMALKALDEN VEB 9 June 1971 19721/71 Heading B3K Each of the cutting elements 2 of a hob is clamped in the body 1 by a series of deformable elements located in grooves 9, 10 in the element and body, the deformation being caused by members 3 placed between the elements, and then applying an axial compression to the assembly of the elements and members 3, 4.
Patent GB-714126-A (GB)
Title: Improvements in precombustion chamber diesel engines
IPC: F02B19/14
Filed: 1952-08-06
Abstract: 714,126. Precombustion chamber; incandescent igniters. DAIMLER-BENZ AKT.-GES. Aug. 6, 1952 [Nov. 12, 1951], No. 19845/52. Classes 7(3) and 7(4) A body which presents convexedly towards the full jet a part spherical surface, is located in the precombustion chamber in the path of the jet. Figs. 1 and 2 show a substantially spherical member 19 mounted in a precombustion chamber 14. A pin 21 may be separate from the pin 20 and member 19 and screwed or pressed into the latter. The spherical member is conveniently located a few millimetres below the centre of the precombustion chamber although the centre of the member and the chamber may coincide. In a modification a pin carrying the member 19 has enlarged outer ends. In another modification a hemispherical member is employed its spherical surface facing the fuel injector 17. In Fig. 7 a ball 24 is carried by the wire 25 of a heater plug 26. The ball may be of ceramic material or of metal. It may be secured by the wire 25 fitting a groove therein or be welded to the wire. The ball may be hollow and welded to the wire and located at or a few millimetres below the centre of the chamber 14. The ball is preferably heated until it glows. In vehicle engines the ball may be 10 millimetres or more in diameter. It is stated that the ball may be carried by a pin mounted at one end in the chamber. The end or ends of a pin may be riveted to the walls of the chamber 14.
Patent GB-976090-A (GB)
Title: Improvements in processes for the oxidation of alkyl-substituted aromatic compounds
IPC: C07C51/265
Filed: 1961-06-01
Abstract: Toluene and xylene are oxidized with oxygen or molecular oxygen-containing gases such as air, to the corresponding carboxylic acids with the aid of a highly oxygen saturated cobalt oxide catalyst which is substantially insoluble in the starting hydrocarbon as well as in the reaction mixture throughout the oxidation process, at temperatures between 120 and 200 DEG C. and at pressures between 1.5 and 10 atmospheres. The catalyst is prepared by oxidizing cobalt hydroxide with oxygen or air at a temperature between 50 DEG  and 300 DEG C., preferably in aqueous suspension under autogenous pressure, and is a mixture of Co2O3 and Co3O4.  The catalyst is filtered off at the end of the reaction and recycled. In examples toluene is oxidized to benzoic acid and p-xylene to p-toluic and terephthalic acids.
Patent GB-574031-A (GB)
Title: Improvements in or relating to solid polymers
IPC: C08J3/12
Filed: 1943-11-29
Abstract: Dissolving solid polymers of ethylenic compounds in an organic gas at high pressures and at a raised temperature and then reducing, in stages, the pressure and temperature and so separating different molecular weight fractions.  The pressure preferably exceeds 500 atmospheres and the temperature is preferably between 50 and 350 DEG C.  Specified polymers are polythene, polyisobutene, polyvinyl chloride, polystyrene and p  polymethyl methacrylate.  Gases which may be used are (a) gases which in the liquid state have a solvent action on the polymer, (b) gases which belong to the same homologous series as liquids which have a solvent action on the polymer and (c) gases whose simple substituted liquid derivatives have a solvent action on the polymer.  Specified gases are a paraffin or olefin of 1 to 4 carbon atoms (ethane, methane, ethylene and propylene), methyl chloride, gaseous acetone, methyl fluoride and fluorine containing olefines, and gaseous mixtures of ethylene with up to 20 per cent of benzene or hexane.  In examples, polythene is treated with ethane, the gaseous solution led to several vessels, where the temperature and pressure are successively reduced and polythenes of differing mean molecular weights obtained (the higher the pressure and temperature the higher the molecular weight). Similar results are obtained by treating polythene with ethylene, polystyrene with ethylene and polyisobutene with ethylene.
Patent GB-649097-A (GB)
Title: Improvements in or relating to constant bandwidth coupling circuit
IPC: H03H7/01
Filed: 1947-07-24
Abstract: 649,097. Impedance networks. DU MONT LABORATORIES, Inc., A. B. July 24, 1947, No. 19939. Convention date, Aug. 3, 1946. [Class 40 (viii)] A constant bandwidth tunable coupling circuit for radio frequency amplifiers comprises two inductively coupled fixed coils, each in series with a variable inductance, a condenser in parallel with each series circuit and a condenser common and in parallel to both circuits. Inductive coupling is provided between the fixed coils 3, 4 and the variable inductances 1, 2 are ganged. Capacitive coupling is provided by a condenser 7 common to both circuits. Damping resistances are provided in shunt with each tuned circuit. The fixed coils are so arranged that the current induced by the coupling between them opposes the current flowing due to the capacitive coupling.