baber/WOPTO huggingface dataset:
Patent GB-542880-A (GB)
Title: Improvements in or relating to torsional vibration dampers
IPC: F16F15/14
Filed: 1940-07-25
Abstract: 542,880. Vibration-dampers. BRADBURY, C. H., and RUSTON & HORNSBY, Ltd. July 25, 1940, No. 12125. [Class 108 (iii)] [Also in Group XXIV] A torsional vibration damper comprises a damping mass 6 mounted on a shaft member 3 by means of rubber or like material which is subjected to compression to damp out vibration, friction between the shaft member 3, the rubber, and the damping mass being eliminated. As shown, the members 3, 6, have flanges 5, 7, through which pass a series of bolts 10 bushed with the rubber 9, the latter being subjected to axial compression. In a modification, the bolts are fixed to the flange 5 and the rubber bushes 9 engage holes in the flange 5. Each bush 9 may be built up of a series of washers. The damping mass may be incorporated in a driving member, such as a pulley, for transmitting power to an auxiliary machine.
Patent GB-192973-A (GB)
Title: Improvements in screw-down stop valves and the like
IPC: F16K1/42
Filed: 1922-05-01
Abstract: 192,973. Self, S. A., and Self Engineering Co., Ltd. May 1, 1922. Leakage, preventing and discharging; closure members, concentric closures in series.-A screwdown valve is provided with supplementary closure surfaces which come into operation when the main closure surface becomes worn, and with means for discharging liquid which leaks past the screw-threads of the spindle. The enlarged portion c of the spindle a is screw-threaded to engage with the interior of the casing a. A passage. g is provided for the escape of liquid which leaks past the spindle, and the liquid is discharged into the recess occupied by the spindle i of the jumper. The disc j is flanged at k, and a soft washer l contained in the recess engages with a raised seating m. When the washer becomes worn, the flange k engages with a white metal seating n, and finally the flange m may engage with the top of the recess containing the washer l. When the valve is open, the surface r of the spindle engages with a leather washer s to prevent leakage.
Patent GB-592550-A (GB)
Title: Improvements in or relating to laminated springs
IPC: F16F1/20
Filed: 1945-05-15
Abstract: 592,550. Laminated springs. ENNIS, A. S., and WOODHEAD & SONS, Ltd., J. May 15, 1945, No. 12183. Drawings to Specification. [Class 108 (iii)] In order to avoid or reduce squeaking in laminated springs, interleaves of steel wire mesh are inserted between the laminations and may extend along the whole length of the laminations, on each side of the usual clamping device, or may be of relatively short length and inserted where required. The interleaves may consist of steel wire gauze loaded with graphite bonded with grease or other substances, such as those known under the Registered Trade Marks " Bostik " and " Durofix," or synthetic resins.
Patent GB-1029213-A (GB)
Title: Chromone derivatives
Inventor: WRAGG ARTHUR HEDLEY
IPC: C07D319/18
Filed: 1962-03-30
Abstract: New compounds of general formula <FORM:1029213/C2/1> wherein the entities X are the same and are -O- or -CH2-, and R is -OH, -NHR1 COOH or -OR2NR3R4, R1 and R2 being straight or branched chain alkylene groups and R3 and R4 being each hydrogen or alkyl or jointly forming a heterocyclic ring with the N-atom; and salts and esters thereof; are prepared by (1) condensing a compound <FORM:1029213/C2/2> with diethyl oxalate and cyclizing the resulting (b  - ethoxycarbonyl - b  - oxo - propionyl)-(hydroxy)compound with glacial acetic acid and hydrochloric acid, (2) reacting reactive derivatives of product acids with compounds H2NR1COOH, (3) reacting acid halides with compounds H2NR1COOR5, R5 being alkyl, and hydrolysin the ester formed, (4) forming an ester from the acid.  6 - Acetoxybenzo - 1,4 - dioxan starting material is also prepared. Pharmaceutical compositions comprise compounds I, salts and esters with carriers.  Forms for oral, parenteral and topical administration are mentioned; the compounds inhibit antigenantibody reactions.
Patent GB-928131-A (GB)
Title: A new or improved footwear attachment for use in mountaineering
IPC: A43C15/06
Filed: 1958-05-17
Abstract: 928,131. Anti-slipping attachments for footwear. J. E. K. GARNSWORTHY. Aug. 17, 1959 [May 17, 1958], No. 12230/58. Class 17 (2). A footwear attachment for use in mountaineering comprises an open frame of tough, light alloy adapted for temporary securement to the footwear sole for the full length of the latter and made in two or more sections hinged together to permit flexing of the sole, each frame consisting of a peripheral part or parts with spaced rows of pointed projections 18 at the underside and an integral bridge part, and the hinge (or one of the hinges) being arranged to lie beneath the ball of the wearer's foot. The frame has a raised bridge piece 14 which supports the shank portion of the shoe. The frame is located by lugs 12 and attached to the shoe by straps which pass through lugs 12 and bridgepiece 14. Projections 18 may be replaced by T-section steel members with serrated edges which are embedded in the frame or riveted thereto. Fig. 1 shows a frame of two sections 10a, 10b, hinged at 20, and Fig. 6 a frame of three sections 21a, 21b, 21c hinged at 22a and 22b.
Patent GB-1392261-A (GB)
Title: Polyamide or polyester granules on or in which are fixed  dyes pigments or other additives
IPC: C08J3/22
Filed: 1973-03-14
Abstract: 1392261 Colour-coating polymer particles CIBA-GEIGY AG 14 March 1973 [14 March 1972 (3)] 12275/73 Heading B2E [Also in Division C3] Granules of linear polyamides or polyesters having fixed thereon an additive, with m.p. >100‹C, being a pigment, polymer-soluble dyestuff, optical brightener, heat-stabilizer, or U.V. absorbent, are made by mixing granules of the polymer with the additive in a highspeed rotary mixer at 30-200‹C until the granule surface is plasticized and the pigments or dyestuffs are fixed on the granules, followed, if necessary, by allowing the mixture to cool. These may be 0.1-5 parts by wt additives per 100 parts granules. The polymer may be nylon 6, 11, 66, or 6/10; or polyalkylene terephthalate, where the alkylene radical has 2-10 cations. Pigments and dyestuffs which are coated as powders include Cd sulphide, Fe and Cr oxides, ultramarine, Co pigments, C black, TiO 2 , phthalocyanines, e.g. hexadecachloro-Cu phthalocyanine, #-Cu phthalocyanine, phenylenetetracarboxylic acid di-(p-methoxyphthalimide) quinacridones, 2, 4- di-(2'-hydroxynaphthyl) - 6 - pyrenyl-1, 3, 5- triazine, perylenetetracarboxylic diimide, anthrimide carbazoles, azo dyestuff metal complexes, e.g. 1, 2-Cr complexes of water-insoluble monazo dyestuffs e.g. or disperse azo-dyestuffs, dis-azo pigment or alkyl-, cycloalkyl-, or aryl aminoanthraquinones, phenylmercapto-anthraquinones, or anthraquinone-acridones. Alternatively, the colourant may be used as a preparation comprising abietic esters, magnesium behenate, vinyl chloride/vinyl acetate copolymer, or polyterpene resins. The optical brighteners may be the heat stabilizer may be  and the U-V stabilizer may be  The mixer may have speed 300-3000 rpm. The coated granules may be formed into fibres, sheets, strips, or injection-mouldings. Reference has been directed by the comptroller to Specification 878669.
Patent GB-682662-A (GB)
Title: Improvements in or relating to machine guns and small arms
IPC: F41A5/20
Filed: 1937-04-29
Abstract: 682,662. Machine guns. BLACKER. L. V. S. May 28, 1938 [April 29, 1937; April 29, 1937], Nos. 12288/37 and 12289/37. Class 92(ii) Relates to a fixed barrel machine 'and like guns of the kind in which a sliding breech block 2 is locked in firing position by levers 7, 8 pivoted at 9, 10 to the gun barrel 1, the levers being swung into and out of locking position by a gas-operated sleeve 3 sliding on the gun barrel and the firing mechanism 25 being controlled by the levers so that the gun fires only when the breech block is closed and locked. According to the invention, the sleeve 3 is mounted on the gun barrel so as not to add to the overall length of the weapon, and the levers carry wedges 11, 12 engaging between lugs 13, 15 on the barrel and breech block respectively to prevent rearward movement of the block on firing and to eliminate firing stress on the levers., As shown, the sleeve 3 is moved forwardly on firing by gun gases tapped through ports 5 and is'returned by a spring 4. The locking levers carry rollers 17 at the front and the pivoted wedges 11, 12 at the rear. The sleeve has rearwardly-extending inclined cam rails 20 and a forward conical cam surface 19 with which the roller 17 engages during forward and rearward movement of the sleeve to unlock and lock the breech block. On firing, and after unlocking, the breech block is moved rearwards against the action of springs either by the gun gases acting through the cartridge case, or by linkage connected to the sleeve 3. The striker post 24 carrying firing-pin 25 is moved rearwardly with the breech block but is retained in rear position by a projection 31 on a pivoted sear 28 urged by spring 37. The strikerpost is released for firing by the engagement of wedge 11 with the rear end 29 of the sear. In the even of breakage of spring 37, a projection 34 on the sear prevents closure of the breech block. The first Provisional Specification also describes a firing mechanism having a pivoted hammer controlled by a trip device operated by a sleeve with a lever and cam device similar to that described above for the breech block locking-lever. The second Provisional Specification also describes a breech block which is guided on the outside of the barrel by forwardlyextending rods moving in slots or grooves in the barrel. Specification 364,101 is referred to.
Patent GB-984994-A (GB)
Title: Annealing cover for an annealing furnace
Inventor: JACOB MORRIS LOUIS
IPC: C21D9/673
Filed: 1963-03-28
Abstract: <PICT:0984994/C6-C7/1> <PICT:0984994/C6-C7/2> <PICT:0984994/C6-C7/3> An annealing cover for a furnace consists of a cylindrical wall with a top closure member secured to the upper end thereof and an annular lifting member surrounding the wall and attached to it by means of circumferentially spaced vertical members.  The wall may be smooth or vertically corrugated.  As shown in Fig. 1, cylinder 2 is welded to the flat annular rim of an otherwise domed closure member 10, while welded to the wall are a series of brackets 14 which are also attached to lifting member 13.  The latter may be of rectangular cross-section with its larger dimension perpendicular to the wall surface, or may be of angle or channel section.  The cover may be provided with such means for supporting the lifting device as stools 15, an annular rib 20, Fig. 6, which may be continuous or in arcuate sections, or an annular frusto-conical member 33, Fig. 10.
Patent GB-400862-A (GB)
Title: Improvements relating to hydraulic variable speed power transmission
IPC: F16H39/32
Filed: 1933-04-27
Abstract: 400,862. Hydraulic transmission of power. MASEYK, A. W., 40, Dagnar Avenue, Wembley, Middlesex. April 27, 1933, No. 12323. [Class 69 (ii).] In hydraulic transmission gear having pumps 17, 18, 19, Fig. 1, and a motor or motors 36, the pumps and motor have rotors with rollers 16 or 45, Figs. 2 and 3, constituting vanes, and the pump and motor casings have arcuate concentric portions of different radii, the portions being preferably connected by tracks forming boundaries to inlet and outlet ports. In the motor, pockets 47 are between adjacent rollers. The pumps are of different capacities, and are selectively put into circuit with the motor by valves 24 in a chest 23. A reversing valve 32 is provided. Glands 6 and oil throwers 7 cause leakage to pass to a sump 10, from which it is returned to a reservoir 1 by a pump 14.
Patent GB-778265-A (GB)
Title: Improved styrene-acrylonitrile copolymers
IPC: C08F220/44
Filed: 1955-04-29
Abstract: Graft copolymers having improved toughness are prepared by polymerizing a mixture of 50 to 90 parts of styrene of vinyltoluene with 50 to 10 parts of acrylonitrile and optionally up to 15 per cent of an unsaturated comonomer, e.g. a -methylstyrene, vinyltoluene, ethyl acrylate, butyl acrylate, methyl methacrylate or methacrylonitrile, in which is dispersed 1 to 50 per cent or more of a preformed, gel-containing rubbery copolymer.  The rubber may comprise butadiene-1,3, 5 to 50 per cent of acrylonitrile and optionally up to 15 per cent of an unsaturated comonomer, e.g. isoprene, styrene, butyl acrylate, methyl methacrylate or methacrylonitrile, and is intimately dispersed, e.g. by tumbling overnight under nitrogen in sealed tubes in the monomers which are polymerized by mass, solvent, suspension, e.g. in the presence of tricalcium phosphate or vinyl acetate-maleic anhydride copolymers, or emulsion, e.g. in the presence of a water-soluble salt of an alkyl substituted aromatic sulphonate, techniques between 25 DEG  and 125 DEG  C.  Catalysts, e.g. benzoyl peroxide, diacetyl peroxide, dimethylphenyl hydroperoxymethane and alpha, alpha1 - azo - bis - isobutyronitrile may be added.  The rubber may be prepared by aqueous emulsion polymerization in the presence of an alkyl mercaptan having 8 to 16 carbon atoms and a catalyst, e.g. a persulphate, or a cumene hydroperoxide-pentamethylene hexamine or ferrous phosphate redox system, stripping and coagulating the latex by adding an acid or salt.  Plasticizers, stabilizers, fillers and dyes may be incorporated in the rubber or copolymer before, during or after polymerization.  The product may be injection or compression moulded, used to form sheets or, in latex form, emulsion paints.  U.S.A. Specifications 2,439,202, 2,505,349 2,550,139 and 2,652,384 are referred to.
Patent GB-646924-A (GB)
Title: Improvements in or relating to control systems for alternating current motors
IPC: B65H23/185
Filed: 1947-05-08
Abstract: 646,924. Automatic web tension control systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. May 8, 1947, No. 12461. Convention date, May 10, 1946. [Class 38 (iv)] [Also in Group XXXVII] The tension in a moving web is maintained constant by supplying the motor driving the roll with interrupted A.C., the ratio of energization to interruption being determined by a spring-loaded dancer roll in contact with the web. The web 2 is drawn by a machine 3 from a let-off roll 1 which is driven through selflocking reduction gearing by a single phase capacitor motor 6. As shown, the roll 1 is locked as the motor is stationary, the only supply from transformer 7 being by way of rectifier 27 and a blocking condenser 17. The thyratron 12 is biassed to cut-off by a voltage derived from rectifier 24. Due to the pull of machine 3, the tension increases until the roll 29 is depressed sufficiently to close contacts 26 which reduce the bias on valve 12 by shorting out resistors 20, 23. Since valve 12 and rectifier 27 are connected to conduct on alternate halfcycles, the motor runs until a slight amount of material is released, when roll 29 is lifted and continues to oscillate to control the motor speed. If the tension becomes excessively low, contacts 18 are opened, contacts 28 closed and the motor is reversed.
Patent GB-353076-A (GB)
Title: An improved process for the production of formaldehyde from methane and carbon dioxide
IPC: C07C45/28
Filed: 1930-04-23
Abstract: Formaldehyde is obtained by passing a mixture of methane and carbon dioxide at increased, reduced, or atmospheric pressure through an electric field generated by high frequency, high voltage currents, the concentration of carbon dioxide being equal to or greater than that of the methane.  The gas mixture is preferably preheated and subjected several times to the treatment. Catalysts such as calcium or magnesium carbonate may also be located in the field.  According to examples, a voltage of 80000 and a frequency of 1,500,000 are suitable.ALSO:Formaldehyde is obtained by passing a mixture of methane and carbon dioxide at increased, reduced, or atmospheric pressure through an electric field generated by high frequency, high voltage currents, the concentration of carbon dioxide being equal to or greater than that of the methane.  The gas mixture is preferably preheated and subjected several times to the treatment. Catalysts such as calcium or magnesium carbonate may also be located in the field.  According to examples, a voltage of 80000 and a frequency of 1,500,000 are suitable.
Patent GB-779353-A (GB)
Title: Improvements in boilers having mechanical stoking devices
Inventor: HOLLINSHEAD EDWARD LANGLEY
IPC: F23K3/16
Filed: 1954-04-30
Abstract: 779,353. Solid fuel-fired combustion apparatus. HODGKINSON (SALFORD), Ltd., J. May 2, 1955 [April 30, 1954], No. 12528/54. Class 51 (1). In a solid fuel-fired boiler in which fuel is ram fed from a hopper A over a series of tuyeres D<SP>1</SP>, D2, D3 to a grate C combustion air is supplied to the zone over the tuyeres, i.e. the ignition, at a higher pressure than that simultaneously supplied to the zone over the grate, i.e. the combustion. The ignition zone air issues through apertures d in the tuyeres and is supplied thereto through a damper-controlled duct F. The combustion zone air is supplied through a damper-controlled duct G to a chamber G<SP>1</SP> extending across the end of the combustion flue A<SP>1</SP>. A fan H supplies air to both zones. Alternatively each zone may have its own air supply fan. A duct F may be located on each side of the boiler. Tuyeres D<SP>2</SP> are reciprocated through a manually actuated handle E whilst the fuel feed ram B is power driven.
Patent GB-570563-A (GB)
Title: Low plasticity rubber
IPC: C08K5/18
Filed: 1941-09-29
Abstract: Low protein rubber is treated to reduce its plasticity by incorporating, preferably into latex before coagulation, a 4-41-diaminodiphenyl compound such as benzidine, tolidines or dianisidine.  Rubber latex is heated with alkali or other agent to render the proteins soluble, and is separated by centrifuging or by creaming with konnyaku meal, gum tragacanth or Iceland moss, to obtain concentrated latex free from proteins. Benzidine in amount .15 per cent on the dry rubber is added, and the latex, after dilution, is coagulated with formic acid or other reagent and the coagulum is creped and dried.
Patent GB-1320296-A (GB)
Title: Strap tightening tool
IPC: B65B13/24
Filed: 1972-03-17
Abstract: 1320296 Strap tensioners THOMAS & BETTS CORP 17 March 1972 [26 March 1971] 12631/72 Heading F2G In order to tighten a strap 140 round a bundle 142, lever 26, which moves a pawl slide 54 to and fro by means of a cable connection 84, and return spring 88, is oscillated until sufficient tension has been built up in the strap for the pivots 98 of roller 96 to be moved into the vertical part 102 of L-shaped slots in plates 100. The pivots 98 are held in the horizontal part 104 of the slot, by the adjustable tension in spring 106, until the opposing tension in the strap is sufficient to overcome the spring 106. This may happen anywhere in the travel of lever 26 and the ensuing engagement of roller 96 with lever 62 pivots the latter about its fulcrum 64 to operate shear blade 40 and cut the strap. The free movement of lever 26, thereafter, brings pawl 44 into contact with release abutment 60, carried on lever 62. The pawl 44 is spring- urged into engagement with the strap and is pivoted, at 46, on the part 80 (Fig. 16) of the slide 54.
Patent GB-630588-A (GB)
Title: Improvements in hand trucks
IPC: B62B1/10
Filed: 1945-07-20
Abstract: 630,588. Hand trucks. WARRY, R. F. July 20, 1945, No. 12639/47. Divided out of 630,551. [Class 108 (i)] A hand truck, particularly for transporting slabs, and the like, has a frame comprising parallel inwardlyflanged bars 6 braced at their lower ends by a U-shaped toe-plate 14 and connected at their top ends by a handlebar 8 with handle arms 8a. Wheels 10 on an axle 11, mounted in depending brackets 12, welded to the bars 6, provide for normal movement, but the truck may be turned in a small radius on rollers 14<SP>1</SP> located at the base. In an adaptation, the toe-plate 14 may be interengaged with channel-members on carriers for slabs and other building material.
Patent GB-742548-A (GB)
Title: Process for making spherical catalysts
IPC: B01J21/12
Filed: 1953-05-06
Abstract: Silica-alumina catalyst in microspherical form is prepared by passing droplets of silica hydrosol down through an anhydrous alcoholic solution of an aluminium alcholate to form hydrogel particles of silica containing alumina produced by hydrolysis of the aluminium alcoholate.  To assist gel formation, the liquid may be maintained at a temperature of 100 DEG -210 DEG F. and a pH of 5-6. The alcoholate solution may be formed by reacting aluminium with an excess of a partially water-miscible alcohol, e.g. n-butyl or amyl alcohol; the solution may also contain a hydrocarbon.  To prepare the silica hydrosol, a solution of an alkali metal silicate may be passed through a bed of cation exchange resin; before use the hydrosol is preferably aged at 150 DEG -210 DEG F. for 2-60 minutes.  The liquid separated from the gel particles is heated to drive off water and then reacted with aluminium to reform the alcoholate solution.
Patent GB-1214541-A (GB)
Title: Sub-standard size cine camera
IPC: G03B1/66
Filed: 1968-03-15
Abstract: 1,214,541. Film indicator devices. AGFAGEVAERT A.G. March 15, 1968 [March 18, 1967], No.12769/68. Heading G2A. An indicator shows both when film is present in a camera, and also when the film is being transported. In Fig.1, a cinÚ camera for sub-standard size film has a shaft 9 which can slide axially, and is urged by a spring 10 in a direction opposite to arrow 15. When a film cassette 6 is inserted into the camera, it is connected by a coupling 7, 8 to shaft 9. The latter has a gear portion 11 which is driven by a motor (not shown), the drive thus being transmitted to the film through coupling 7, 8. A drive pawl 14, which actuates the film counter, is mounted on an eccentric portion 9a of shaft 9. Thus as the shaft rotates, pawl 14 executes a reciprocating movement, in the direction of arrow 17. Pawl 14 also carries an index marker 18, 19 on which is a pattern of dots 19a. This is visible in a section 4 of the view-finder 2. Thus when film is being transported, the marker 19 executes a reciprocating movement corresponding to that of pawl 14, giving a visible indication that the film is moving. When the cassette is withdrawn from the camera, shaft 9 moves to the right under the action of spring 10, so that the marker 19 is no longer visible in the view-finder. In the modification of Fig.2 (not shown) the indicator is a separate spring-loaded lever, actuated by a cammed portion of the pawl 14.