baber/WOPTO huggingface dataset:
Patent GB-446939-A (GB)
Title: Improvements in or relating to motor or power driven hammers
IPC: B25D11/06
Filed: 1935-07-16
Abstract: 446,939. Percussive drills. ERFASS, K. A. R., 6, Mosebacke torg, Stockholm. July 16, 1935, No. 20292. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 24, 1936.] [Class 124] An electric motor rotates an inclined disc 2 and hence reciprocates a piston 6. This is connected to a striking member 7 by a helical spring 5 and by air compressed in the cylinder 16. The spring is connected to the striker by its end being passed into a groove between flanges 20, 21. Oil from the chamber 13 passes through the hole 14 to lubricate the sliding surfaces between the parts 6a and 8. A spring 11 absorbs idle blows.
Patent GB-372624-A (GB)
Title: An improved air, gas or smoke extractor
IPC: F23L17/02
Filed: 1931-07-15
Abstract: 372,624. Ventilators ; cowls. MACDONALD, D. F., Inverclyde, Kirn, Argyll. July 15, 1931, Nos. 20311 and 28360. [Classes 25 and 137.] An extractor ventilator or cowl is so formed as to present to outside air currents a pair of spaced inner and outer air deflecting members or surfaces which are continuous right round the extractor or face in at least three and preferably more directions, the inner deflecting member protruding above the outer, and overlapping parts of the members being inclined to the vertical. The extraction of air, smoke or the like is effected through the space between the members or surfaces. The inner deflecting surface is of conical, pyramidal or other dome form and as shown in Fig. 1 comprises a hemispherical shell 2 with a depending skirt 3 supported from a base plate 5 by means of a central rod 9. The outer deflecting surface is formed by a conical ring 4 provided with an aperture 11 for draining purposes. An aperture in the base by which the extractor communicates with the enclosure is provided with a shaft 1 extending upwardly into the dome. In a modified form the deflecting members are square instead of circular. In a further modification, Fig. 5, intended more particularly for chimneys, the extractor is of fireclay and the outer deflecting member comprises a ring 12 integral with the base 13 and central air shaft 14. The inner deflecting member rests on the base, its legs 16 being correctly positioned by means of an upstanding circular step 16a around the air shaft 14. The inner member is provided with means for deflecting downdraught away from the annular outlet, said means comprising a collar or rib 18, as shown, a series of ribs, or a disc on the top of and integral with, the dome. In a further modification, Fig. 9, as applied to a ship's funnel the dome 24 is of conical form with a depending skirt and the outer deflecting surface 25 is formed by the outer wall 22 of the funnel.
Patent GB-516808-A (GB)
Title: Improvements in or relating to coating compositions for producing a dull or matte finish
IPC: C09D101/08
Filed: 1938-07-08
Abstract: 516,808. Cellulose ester compositions films, coated fabrics &c. DU PONT DE NEMOURS & CO., E. I. July 8, 1938, No. 20329. Convention date, July 22, 1937. Addition to 474,045. [Class 2 (ii)] [Also in Group VIII] A cellulose derivative coating composition suitable for the production of dull or matt finishes on flexible or other base materials is obtained by adding to a solution of cellulose nitrate and cellulose actetate in a volatile solvent composition, free from non-volatile plasticizers incompatible with cellulose acetate, a precipitant for cellulose acetate in a quantity sufficient to precipitate the cellulose acetate in fine particles free from large agglomerates. The precipitant may be a volatile organic liquid such as an aromatic hydrocarbon or a lower aliphatic alcohol. The cellulose acetate and cellulose nitrate may be present in equal quantities by weight and the ratio of cellulose acetate solvent to cellulose acetate precipitant may lie between 1:3 and 1:10. Toluene, benzene, or ethyl, propyl, isopropyl, butyl, or amyl alcohol, or propyl, butyl, isopropyl, isobutyl, amyl, or isoamyl acetate may be used as cellulose acetate precipitant. In an example a dull finish coating composition is obtained by mixing a solution of ,cellulose nitrate in ethyl alcohol and ethyl acetate, with a solution of cellulose acetate in ethyl acetate and acetone and then adding a mixture of ethyl alcohol, ethyl acetate, and toluene until the product has a milky appearance. This composition is applied over a woven cotton sateen fabric already provided with several coats of a composition comprising cellulose nitrate, ethyl alcohol, ethyl acetate, pigment, and castor oil, and a top coat of cellulose nitrate, ethyl alcohol and ethyl acetate. The product obtained is suitable as a leather substitute, and it has a dull, smooth, non- peeling, uniform finish not easily removed by abrasion. Reclaimed cellulose nitrate may be used instead of freshly nitrated cellulose. Pigments may be included in the dull-finish composition. Instead of acetone the solvent for cellulose acetate may be methyl ethyl ketone or ethyl acetate. The composition may be applied as a lacquer to wood, glass, metal, stone or other 'rigid surface, or to paper, regenerated cellulose, natural or synthetic resin surfaces. The composition may be applied locally, e.g., by use of stencils so as to obtain decorative effects. Fabrics having a cellulose derivative base coat finished with the dull-finish compositions may be used for making wearing apparel such as belts, hand-bag material, pocket-books, flexible black-boards, and book-binding material. The composition may be applied to cellulose ester or regenerated cellulose films.
Patent GB-1339347-A (GB)
Title: Process for denicotinizing and expanding tobacco
IPC: A24B15/24
Filed: 1971-04-19
Abstract: 1339347 Treating tobacco REYNOLDS LEASING CORP 19 April 1971 [5 Feb 1970] 20342/71 Heading A2C Tobacco is denicotinized and expanded by impregnating the tobacco in an impregnation zone with an organic liquid solvent for nicotine, the solvent having a boiling point below 100C at atmospheric pressure and forming a reservoir of solvent in a lower portion of the said zone and an atmosphere of vapour of the solvent in an upper portion of the said zone, the impregnation being effected by passing nicotine-containing tobacco into contact with said reservoir of solvent and then conveying the solvent-impregnated tobacco into said upper portion of the impregnation zone, withdrawing the solvent-impregnated tobacco from said upper portion and contacting the withdrawn tobacco with a gas heated to a temperature above the boiling point of the solvent at the prevailing pressure to vapourize the solvent and expand the tobacco; separately withdrawing solvent containing nicotine from said reservoir, separating nicotine from the separately withdrawn solvent and contacting the nicotine depleted-solvent with the tobacco in the upper portion of the impregnation zone, the solvent subsequently flowing downwards through the tobacco into the reservoir of solvent. The preferred organic liquid is trichloro monofluoro methane, but many other suitable solvents are specified. The tobacco to be treated is preferably in shredded form with a moisture content between 5 and 200% by weight (dry basis). The impregnation is preferably effected at an elevated pressure and the contacting with hot gas preferably effected at atmospheric pressure. The nicotine may be removed from the organic liquid by any known method, a number of which are specified, removal with dilute acid being exemplified. An apparatus for carrying out the process is illustrated by means of a flow diagram.
Patent GB-901223-A (GB)
Title: Improvements in or relating to the production of steel and other metals
Inventor: EMMOTT JOSEPH GORDON
IPC: C21C7/076
Filed: 1958-06-25
Abstract: In a modification of the process described in the parent Specification there is introduced into the molten metal or alloy, together with the substance generating carbon monoxide and/or dioxide, an accelerator which is selected, when the molten metal is steel, from the following: (a) silica flour alone or together with calcium fluoride; (b) iron or copper in small particle form, or silicon carbide, or mixtures thereof; (c) aluminium in finely divided form, alone or with a fluoride such as sodium or potassium fluoride or cryolite.  The accelerator may be a single substance or a mixture of any of the materials listed above.  When treating nickel or copper or their alloys, the accelerator is selected from groups (b) and (c) above, and from magnesium, or mixtures of aluminium, magnesium or carbon each with an oxidizing agent such as an alkali metal nitrate. The additives may be briquetted together before addition.
Patent GB-1326462-A (GB)
Title: Hand-operated adhesive tape dispensers
IPC: B65H35/00
Filed: 1971-04-19
Abstract: 1326462 Applying adhesive tape H H WEICK 19 April 1971 [16 Feb 1970(2) 17 April 1970 14 July 1970] 20440/71 Heading B8F A tape dispenser casing 1 supports a roll 3, the tape from which is led through a slot 5 and beneath a pressure roller 10, mounted on a movable member 7, to the article. A friction brake restains rotation of the roll. To apply tape, the dispenser is moved to the left with the member 7 held in its lowermost position with the pressure roll 10 projecting beneath the casing. When the desired length has been applied, the member 7 is released and movement of the dispenser to the left continued. The tension in the tape shifts the member 7 upwardly until the tape engages a knife 8 and is severed thereby. The free end of the tape on the roll then adheres to an edge 5c of the slot 5. In a modification (Fig. 9, not shown) the pressure member is  provided by an arcuate member mounted for arcuate movement in the casing and retained in its lowermost position by a catch. In another modification (Fig. 10, not shown) the pressure member is a cam member pivotally mounted in the casing and retained in its lowermost position by a catch. Release of the catch permits clockwise movement of the cam under the tape tension so that the tape can be severed. This arrangement can be further modified by mounting the tape severing knife on the cam.
Patent GB-531232-A (GB)
Title: Improvements in rotary fluid pressure devices
IPC: F01C21/08
Filed: 1939-07-14
Abstract: 531,232. Rotary engines and pumps. FAIRWEATHER, H. G. C. (Manly Corporation). July 14, 1939, No. 20592. [Class 110 (ii)] Fixed abutment type, piston having outwardly sliding vanes. The vanes are pressed outwardly by fluid at a pressure higher than the working pressure of an engine or the delivery pressure of a pump. Fluid is admitted behind the vanes of an engine 10, Fig. 1, by a pipe 52 connected in front of a pressure-reducing valve 61 in the supply pipe 42. The valve 61 may be byepassed by a line including a valve operated by a governor when the engine speed is high enough. In the case of a pump 10, Fig. 9, the pressure in the pipe 152 is raised above the pressure in the delivery pipe 142 by means of a pump 170. The increase in pressure is determined by a valve 160 which permits excess fluid from the pump 170 to pass to the pipe 142. This arrangement may be used for a motor. A suitable arrangement of piping and a reversing valve may be used for reversing a motor. A motor comprises a rotor 15; Fig. 2, splined on a shaft 22 supported in bearings 23, carrying radially-sliding vanes and operating in an oval casing which provides two opposed abutments. The casing is formed of a ring 25 having a circular exterior and an oval interior and two end plates 34, 35 housed in an outer casing 10. Pressure fluid from the pipes 52, is led by grooves in the end plate 35 to the vane pockets. Similar grooves in the end plate 34 serve to equalize the pressures in the vane pockets. These grooves may be arranged to maintain the connection to the vane pockets, or, to make that connection only up to the opening of the-exhaust. In the latter case, grooves are. provided in the plate 34 which connect the vane pockets to the exhaust pipe during the exhaust period.
Patent GB-665037-A (GB)
Title: Improvements in eccentric presses
IPC: B30B1/26
Filed: 1949-08-09
Abstract: 665,037. Positive clutches. NAAMLOOZE VENNOOTSCHAP NEGUM, and HAMMERSCHLAG, G. Aug. 9, 1949, No. 20695/49. Class 80 (ii). [Also in Group V] A rotary-key clutch is mounted between the hub 2 of a flywheel 3 and the eccentric shaft 1 of a mechanical press (see Group V). The key 4 of the clutch couples the hub and the shaft when released by a stop 12.
Patent GB-732716-A (GB)
Title: Improvements in or relating to catch gear for mine cages and the like
Inventor: MILLER RICHARD
IPC: B66B5/22
Filed: 1952-08-18
Abstract: 732,716. Mine cage catch gear. COAL INDUSTRY (PATENTS), Ltd. Aug. 12, 1953 [Aug. 18, 1952], No. 20701/52. Class 78 (3). Catch gear for a mine cage comprises wedges 10 located in slots 15 in a slipper 11 engaging a cage guide rail or rope (not shown), and freely suspended from a lever 6 which is pivoted to the slipper at 20 and is urged clockwise by a spring 9 and a weight 8. Two such devices are provided, one for each guide, and the arrangement is such that normally ropes 7, secured to the hoisting rope (not shown), hold the devices out of action, whilst when the tension in the hoisting rope is reduced the wedges are forced into engagement with the guides and the cage is brought to rest.
Patent GB-1175791-A (GB)
Title: Gas Burner
IPC: F23D14/00
Filed: 1968-05-02
Abstract: 1,175,791. Gas burners. ECLIPSE FUEL ENG. CO. 2 May, 1968 [25 May, 1967], No. 20773/68. Heading F4T. A gas burner comprises an inner gas delivery pipe 10 flow thereto being regulated by a valve 14 in a gas supply pipe 11, the pipe 10 extending through the closed bottom end 21 and terminating beyond the open end 26 of a cup 22 which is disposed within and is concentric with a tube 12 to which air is delivered via a conduit 17 into an opening 18 so as to be formed into a tubular curtain around the cup 22, a stream of gas being discharged from the downstream end 35 of the pipe 10 whilst some of the gas flows out of the pipe 10 through holes 27 and mixes with air entering the cup through holes 28 and 29, in the bottom and side of the cup respectively, to provide a continuous pilot flame, partial combustion of the remaining gas occurring within the tube 12 beyond the cup 22 and being completed at a nozzle 13, formed by convergence of the walls 42, 45 of a tube 41 composed of ceramic material and clamped to the tube 12 beyond the open end of the cup 22. The angle of convergence of wall 45 decreases from a maximum adjacent wall 42 such as to maintain a layer of air covering the wall 45 to the discharge opening of the nozzle 13, the cross-sectional area of which opening is about one-third that of tube 41 within wall 42. In operation, the pilot flame is lit first using gas supplied through a pipe 32 having a valve 33, valve 14 being closed. Ignition is accomplished by a spark plug 31, after which valve 14 is opened. A flame detector is present in the zone of ignition and ignition is observed through a peep opening.
Patent GB-849897-A (GB)
Title: Improvements in or relating to apparatus providing a stable orbit for charged particles including an injection device therefor
Inventor: THONEMANN PETER CLIVE
IPC: H05H11/00
Filed: 1951-09-03
Abstract: 849,897. Cyclic particle accelerators. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Aug. 21, 1952 [Sept. 3, 1951], No. 20799/51. Class 39(1). Charged particles are injected into a stable orbit, such as the stable orbit of a betatron, along a curved path parallel to the orbit by means of a wave guiding structure. The wave phase velocity is initially equal to the injected particle velocity and the particles trapped by the wave are gradually accelerated or decelerated until they are brought into the orbit. The wave guiding structure may be a series of plates connected to points on a delay line or, as shown, a flat serpentine conductor 8 terminated by a load 12, the convolutions of the conductor being of progressively narrower spacing to decrease the phase velocity. The particles, e.g. electrons or protons, are injected by gun 3 and decelerated into the stable orbit at 1. Suitable dimensions are given. The gun may be arranged inside the stable orbit, in which case the particles are accelerated into the orbit.
Patent GB-1453041-A (GB)
Title: Musical drum
IPC: G10D13/02
Filed: 1973-05-02
Abstract: 1453041 Musical drums PREMIER DRUM CO Ltd 12 June 1974 [2 May 1973] 20812/73 Heading G5J A drum comprises two cylindrical rigid end supports 1, 2 separated by a cylindrical shell 8 and retained by parallel spaced brackets 3. Supports 1, 2 may have reinforcing edges 4 and ribs 5 which ribs may engage notches 6 in the brackets. The brackets 3 and supports 1, 2 are screwed together and the brackets may also be secured to the shell 8. The brackets need not extend wholly across the shell 8 as illustrated at 3a. The shell 8 may be of plywood or acrylic plastics material with, for example, a metallized internal finish. Supports 1, 2 may also be made of acrylic or other plastics material. In a modification (not shown) shell 8 may be of flexible sheet material. Brackets 3 are hollow and have a web 12 to support the clamping means shown.
Patent GB-813619-A (GB)
Title: Means for removably fixing a lamp in a reflector
IPC: F21V19/00
Filed: 1957-07-02
Abstract: 813,619. Mounting lamps in reflectors. SOC. POUR LA FABRICATION DES PROJECTEURS ELECTRIQUES MARCHAL. July 2, 1957 [July 5, 1956; June 21, 1957], No. 20815/57. Class 75(4) [Also in Group XXV] A lamp of the type formed integrally with its support is secured in a reflector by means of two elastic members, e.g. wire springs, pivotally mounted between pairs of ears connected to the collar of the reflector so that they can be brought from a position in which the opening of the reflector through which the lamp is inserted or withdrawn is unobstructed to a position in which they bear on the lamp support when in position on the reflector. 'The collar 2 of the reflector carries two part collars on opposite sides having ears 6 forming pivots for a pair of wire springs 7 of the shape shown in Fig. 4, which can be moved from the position in which they engage a flange 3a on the lamp support 3 to a position clear of this, passing through an intermediate position in which the springs are under increased tension so that they tend to move to one or other of the end positions. To ensure the correct orientation of the lamp in the reflector, a lug 3b may be provided on the support 3 to engage a notch, in the collar 2. Alternatively the flange 3a may be of greater height so that the springs can only move into closure position when located opposite to slots in the flange. The width of the slots on opposite sides of the flange 'may be different, the spacing of the parts 7g of the springs being varied to correspond. Two slots may be provided on each side to accommodate the two arms 7g of the springs. The slots and corresponding parts of the springs may be the same size on both sides of the reflector but spaced apart at an angle other than 180 degrees. In motor vehicle head-lamps embodying the fixing means, the slots may be wider than the spacing of the arms 7g so that the lamp can occupy two positions suitable for left- or right-hand driving.
Patent GB-721881-A (GB)
Title: Improvements in methods of soldering and solder therefor
IPC: B23K35/26
Filed: 1951-09-04
Abstract: Lead-tin solder alloys, for use with electrically heated soldering bits, contain sufficient of the metal of which the soldering bit is made to form a eutectic.  Thus where the bit is made of copper the solder contains copper in amount at least 1 per cent of the tin.  The solder may contain up to 5 per cent of copper.  Examples of such alloys are 40 per cent Sn, 59 per cent Pb, 1 per cent Cu; 50 per cent Sn, 48.5 per cent Pb, 1.5 per cent Cu; 60 per cent Sn, 38 per cent Pb, 2 per cent Cu.
Patent GB-614565-A (GB)
Title: Improvements in or relating to tapes for sliding clasp fasteners
IPC: A44B19/40
Filed: 1946-07-12
Abstract: 614,565. Tapes for sliding-clasp fasteners. BONAS, H. G. July 12, 1946. No. 20860. [Class 142(iv)] [Also in Group XXV] In a tape for sliding-clasp fasteners, the edge 1 is thicker than the next part 2, which is itself thinner than the rest, two cords 4, 5 being woven on at the part 2. The edge may contain one thick warp thread, or two threads 10, 11 twisted together, or a larger number of threads, and may be thinner or thicker than the body of the tape, or the same thickness.
Patent GB-780228-A (GB)
Title: Improvements in or relating to hinged lids or flaps under spring action
IPC: E05D11/10
Filed: 1955-07-19
Abstract: 780,228. Boxes. HOFMANN, U. July 19, 1955 [July 21, 1954], No. 20870/55. Class 18. A hinged box lid is sprung into the open or closed position by an over-centre action derived from a lug on one member (box or lid) and resilient deformation of the other. In one embodiment the lid is originally deformed at 6 and is flattened by a lug 5 when the lid is pivotally secured to the body. In other embodiments the lid carries the lug and the rear wall of the body is deformed. In a variation of the last arrangement the box rear wall and lug are integral with the lid and the box bottom is deformed.
Patent GB-1426263-A (GB)
Title: Printing machines
IPC: B41K3/10
Filed: 1973-05-02
Abstract: 1426263 Printing apparatus HEIDELBERGER DRUCKMASCHINEN AG 2 May 1973 [2 May 1972] 20870/73 Heading B6C An offset sheet printing machine comprising sheet feed 8, impression cylinder 1, offset cylinder 2 plate cylinder 3, inking apparatus 4, damping apparatus 5 and sheet removal means 9 has number printing apparatus 11 comprising number printing mechanisms mounted on a shaft which is readily removable from a drive shaft and bearings in the frame of the machine and an inking apparatus 12 for the number printing apparatus which is also readily removable from the machine. As shown, the inking apparatus, Fig 2, consists of two ink applying rollers 19, an axially reciprocable rubbing roller 20 and a messenger roller 22 which is moved to contact the rubbing roller 20 and an ink feed roller 23 alternately. Movement of the messenger roller and axial reciprocation of the rubbing roller 20 is derived from two independent cam surfaces of a single control cam 29.