baber/WOPTO huggingface dataset:
Patent GB-719192-A (GB)
Title: Improvements in core material for inductors
IPC: H01F1/36
Filed: 1953-01-29
Abstract: A magnetic core suitable for frequencies of 100 MC/sec. or more comprises a magnetic iron oxide formed by oxidizing iron carbonyl and compacting with or without a binding agent.  The carbonyl may be burned to form non-magnetic ferric oxide which may be converted to F3O4 either by partial reduction in a mixture of hydrogen and steam at, e.g. 300 DEG C. for 8 hours or by heating it, e.g. in nitrogen at 500 DEG C. for 24 hours, with a suitable quantity of fine carbonyl iron.  Alternatively, the non-magnetic ferric oxide may be converted into its magnetic g  form by reducing for 12 hours in hydrogen at 300 DEG C. and oxidizing in air at 180 DEG C.  It is also stated that magnetic oxides may be obtained by direct oxidization of the carbonyl, and that the oxide may be ground at one or more of the stages of production.  Values of Q and m  obtained are specified. Reference has been directed by the Comptroller to Specification 677,878.
Patent GB-233636-A (GB)
Title: Lock stitch sewing machine
IPC: D05B57/14
Filed: 1924-02-26
Abstract: 233,636. Fairweather, W., (Singer Manufacturing Co.). Feb. 26, 1924. Drawings to Specification. Sewing-machines; lock-stitching by hooks.-A bobbing-case which is independently supported within an open raceway in a rotary hook is formed with a rotation-restraining notch, bounded, on the side last passed by the hookbeak in seizing the needle-lop, by an undercut needle-loop detaining horn. The details of construction are similar to those described in Specification 232,896.
Patent GB-1246014-A (GB)
Title: Method of producing soil resistant polyacrylonitrile fibers
IPC: F24C15/10
Filed: 1969-01-16
Abstract: 1,246,014. Producing soil resistant polyacrylonitrile fibres. MONSANTO CO. 16 Jan., 1969 [16 Jan., 1968], No. 2580/69. Heading B5B.  Polyacrylonitrile textile fibres are treated to render them soil resistant by applying to the wet spun fibres a first finish composition, containing compounds selected from the group consisting of textile lubricants, softeners, antistats, and mixtures thereof, heating and partially drying the fibres, applying to the partially dried hot fibres a soil resistant finish composition containing a zirconium salt in an acidic aqueous solution, and finally drying the fibres to a moisture content of less than 0À5%. The fibres may be partially dried by applying to them sufficient heat to increase their surface temperature to a level higher than about 70 C. The partially dried fibres may have a moisture content of less than about 55% and more than about 5%. The fibres may contain at least 80% acrylonitrile. They may consist of a copolymer of at least about 80% acrylonitrile and up to about 20% of at least one other vinyl monomer such as vinyl acetate. The second finish composition may contain, in addition to the zirconium acetate, sulphamic acid. In an example, a spinning solution comprised of 26 parts by weight of a polymer consisting of 93% acrylonitrile and 7% vinyl acetate, 74 parts of dimethyl-acetamide solvent, and 0À45% based on polymer weight of TiO 2  delusterant is wet spun into an aqueous coagulation bath containing 55% of the solvent and maintained at 40 C. The filaments are withdrawn from the bath, simultaneously washed free from solvent with boiling water and stretched at a stretch ratio of 6. The filaments are then passed through a bath of an aqueous solution of a conventional finish comprising 66% by weight of a lubricating agent containing 60% sorbitan monopalmitate and 40% of castor oil fatty acid with 200 moles of ethylene oxide and 34% of an antistatic agent consisting of soya dimethylaminoethyl etho sulphate. After leaving the finish bath and being stripped of excess finish, the filaments are passed around drying rolls heated to about 150 C. with steam. The moisture content of the filaments is thereby reduced to about 20% and their surface temperature increased to about 83 C. As the tow of filaments proceeds from the last drying roll it is sprayed with a second finish containing in aqueous solution a combination of the first finish and a soil-resistant finish comprised of zirconium acetate and sulphamic acid. The moisture content of the tow is then reduced to about 0À2% by passing it over further drying rolls.
Patent GB-1045671-A (GB)
Title: Improvements in or relating to machines for inserting documents into envelopes
Inventor: BONSCH FRANCOIS RUDOLPH
IPC: B43M5/04
Filed: 1962-01-24
Abstract: 1,045,671. Envelope filling machines. BLOCK & ANDERSON Ltd. April 24, 1963 [Jan. 24, 1962], No. 2677/62. Heading B8C. In a machine for inserting documents into envelopes the envelopes 10, with their flaps rearwardly, are fed singly from a hopper 11, along a path d1, past fingers which open the flaps, and are carried through a slot 35 between a throat plate 33 and a delivery plate 34, by a pair of rollers 43, 44 until they abut an adjustable stop 45a. The undriven roller 44 then rises and the envelope rests on a table plate 45 with its flap beneath the plate 34. An oscillating arm 53 carrying fingers 50 on a spindle 52 swings so that the fingers enter the envelope and are raised as adjustable screws 55 at their other ends contact a stop-bar 56, and a sliding tongue enters the envelope to cover the address aperture. Documents 40 are fed along a path d2 from hoppers 41a, 41b on an endless conveyer 48 with fingers 49, and are pushed into the opened envelopes between the tongue and fingers 50 by a finger 61 pivotally mounted on an oscillating arm 58. The fingers 50 and tongue are withdrawn and finally the finger 61 retracts. A roller 47 is then lowered and the filled envelope carried perpendicularly to its original path, past a roller which dampens the flap adhesive, to a folder where the flap is partially folded. The envelope then falls via a shoot 62 to rollers 63, 64 which fold down the flap and seal it in position.
Patent GB-1048008-A (GB)
Title: Pipe coupling
IPC: F16L49/04
Filed: 1965-01-21
Abstract: 1,048,008. Pipe couplings; joint-making packing. CORNING GLASS WORKS. Jan. 21, 1965 [Jan. 27, 1964], No. 2726/65. Headings F2B and F2G. A coupling comprises a flexible gasket 18 between the opposed ends of pipes 10, 11, first and second means respectively for independently clamping the gasket against the ends of the pipes to effect an annular seal therewith, the said means being independently movable with respect to one another, and means for resiliently connecting the pipes. The glass pipes have flared ends 40, 41 between which and bands 14, 15 are continuous or split wedgesection asbestos rings 12, 13, the latter being forced towards each other by clamping rings 16, 17 connected by screws 23, 24 to inner clamping rings 21, 22 which press the edge portions 19, 20 of the gasket against the pipes. The rings 21, 22 are provided with annular gaskets 29, 30, formed with conical or spherical surfaces and preferably of tetrafluoroethylene, which are in contact with similar gaskets 31, 32 on retraining bands 27, 28. The flexible gasket is of tetrafluoroethylene, has annular beads 55, 56 which fit into grooves in the pipes and has bonded thereto a rigid reinforcing ring 33 of tetrafluoroethylene; resilient annular bands 34, 35 of a silicone rubber assist in preventing deformation of the gasket 18 when the latter is under high pressures.
Patent GB-938038-A (GB)
Title: Improvements in the production of polymer solutions
Inventor: REEDER FRANK
IPC: C08F20/44
Filed: 1961-01-24
Abstract: Acrylonitrile or mixtures thereof with up to 20% of a comonomer are polymerized in solution in dimethyl sulphone, methyl ethyl sulphone or bis-cyanoethyl sulphone, said sulphones being solvents for the polymers produced.  The solvent may contain a small amount of water. Comonomers specified are styrene, methyl acrylate, methallyl sulphonic acid, itaconic acid, vinyl acetate and vinyl pyridine. Polymerization may be initiated by an azo compound, e.g. azo-bis-isobutyronitrile.  The resulting polymer solutions may be used for spinning fibres.
Patent GB-347282-A (GB)
Title: Improvements in cinema screens
IPC: G03B21/56
Filed: 1930-01-27
Abstract: 347,282. Projection screens. HARKNESS, A. S., 169, Aldersgate Street, London. Jan. 27, 1930, No. 2755. [Class 97 (i).] A projection screen for sound films is rendered fireproof and perforated. A closely woven textile material is treated to form an even reflecting surface, and bv the same treatment or otherwise rendered waterproof and fireproof. The screen may be formed of American or leather cloth rendered fireproof. The holes in the screen may be punched out in staggered rows, and the fireproofing solution may be composed of 20 per cent boric acid, 40 per cent borax and the remainder water. Reference has been directed by the Comptroller to Specification 329,068, [Class 97 (i), Optical systems &c.].
Patent GB-559837-A (GB)
Title: Method of making shoes
IPC: A43B9/06
Filed: 1943-02-19
Abstract: 559,837. Boots &c. AYERS, F. L. Feb. 19, 1943, No. 2817. [Class 17 (ii)] In the method of making boots described in Specification 463,713, in which the lasted upper is formed with a downwardly and outwardly projecting flange 7, at least around its forepart, which is inserted and secured beneath an inwardly directed marginal flange 2 on the cemented-on outersole 1, one or more portions of this flange are, according to the present invention, cut-away to form a rand 4, which, after the margin 7 of the upper has been properly located beneath the remaining portion of the flange 2, is cemented in position against the upper face of the outersole and the margin 7 of the lasted upper. If necessary, the margin of the rand, or the margin of the outersole in the vicinity of the rand, is trimmed off in the finishing operations.
Patent GB-768401-A (GB)
Title: Improvements in or relating to simultaneously developing and fixing or stabilizing photographic silver halide emulsions
Inventor: WENSKE KURT
IPC: G03C1/42
Filed: 1955-01-31
Abstract: 768,401. Simultaneously developing and fixing or stabilizing photographic silver halide emulsions. LEONAR-WERKE AKTGES. Jan. 31, 1955, No. 2884/55. Class 98(2) For single-step processing following exposure in a camera, enlarger copying device the emulsions are contacted with a solution containing a reducing agent, producing a colourless or only faintly coloured oxidation product together with hypo or thiourea and usually sodium sulphite. Antifogging agents such as nitrobenzimidazole or mercaptobenthiazole may be included in the solution. Processing may be effected under acid, neutral or alkaline conditions, and in the, latter case image degradation may be restricted, by the presence of difficultly soluble alkali binding substances or slow oxidizing agents present in the emulsion or in an intermediate or backing layer. In Example I a hard silver chlorobromide emulsion on 'paper or film base is exposed and treated for 30 seconds to one minute in a solution containing sodium hydrosulphite, sodium sulphite and hypo or thiourea-and then dried to produce a durable picture. In Example II the solution contains titanous chloride, potassium oxalate, or sodium citrate and thiourea, to produce a reddish-brown image in-half a minute. In Example III photographic base paper is impregnated with a solution of benzoic acid in alcohol, coated with emulsion, exposed in an enlarger and treated as by use of a sponge or roller for 10 to 20 seconds with a solution containing cautic soda, sodium sulphite, hydrazinc sulphate, hypo and nitrobenzimidazole. Example IV specifies a salicyclic acid-collodion layer for neutralization and -hydroxylamine in the developing solution, and Example V a gelatine-benzaldehydebiulphite neutralizing layer for similar procedure. In Example VI zinc oxalate as neutralizing agent and hydroxyamine hydrochloride as developer are included in the silver halide emulsion, and the processing liquid contains caustic potash, sodium sulphite, hypo and mercaptobenzthiazole. Example VII describes base paper coated with baryta containing also barium chromate and barium iodate and then with emulsion for exposure and processing as in Examples III or IV. A difficultly soluble acid also may be included in the base paper. Numerous other substances for neutralizing residual alkali are referred to in the Specification.
Patent GB-159401-A (GB)
Title: Improvements in or relating to brooches, safety pins and the like
IPC: A44B9/18
Filed: 1920-01-30
Abstract: 159,401. Hinds, W., and Hinds, F. Jan. 30, 1920. Catches and sheaths for hinged pins.-A safety de. vice for brooches, safety-pins, &c. com. prises a hinged piece c placed as shown for locking the pin a when in its closed position. The locking-piece may be provided with a recess e to engage the pin, and also with a wing at one or both sides to be engaged by the thumbnail of the wearer; it may also be controlled by a leaf or other spring.
Patent GB-651802-A (GB)
Title: Improvements relating to brushes
IPC: A46B3/04
Filed: 1948-02-02
Abstract: 651,802. Bristles fixing; brush making apparatus. LENG. A. S. Feb. 2. 1948. No. 2963. [Class 19] A method for making a brush, especially a paint brush, comprises assembling a bunch of filaments in a bath of liquid or fine powder such that the filaments can be slightly separated by the liquid or powder, the filaments being immersed to such depth that their butt ends are exposed above the surface of the liquid or powder and bonding together the butt ends of the filaments by cement while thus immersed. In the drawing, the filaments a are packed vertically in a vessel b containing water or other convenient liquid, the size of the vessel being such that the filaments are separated slightly by the liquid. Cement c is then floated on to the liquid to bond together the exposed ends of the filaments. Alternatively, a thin layer of a temporary bonding substance may first be floated on the liquid and the proper cement then added, the temporary substance being then removed by a solvent. When a fine powder is used instead of a liquid it is contained in a larger vessel and the upper ends of the filaments are temporarily held by a loosely fitting sleeve, the securing cement being then poured into the sleeve. A handle may be attached to the filament by means of a ferrule and this may be effected either during or after the assembly of the filaments.
Patent GB-261953-A (GB)
Title: Supports for conical tubes or package carriers used in cross-winding or other frames
IPC: B65H54/54
Filed: 1926-02-02
Abstract: 261,953. Baines, E. N., and Schmidt, J. W., and Osborne, F. Feb. 2, 1926. Winding-machines.-To facilitate doffing, the conical spindle a, b, Figs. 1 and 4, for supporting a paper tube in a cross-winding or like frame, is provided with a floating conical spiral or helix c secured at the larger diameter end by screws c<1>, the spiral being capable of slight extension under a disengaging turn of the package carrier. Blades d, secured by screws d<1>, are provided for fixing the paper tube when applied at the commencement of winding.
Patent GB-430311-A (GB)
Title: Piston pumps for gases and liquids
IPC: F04B9/14
Filed: 1934-06-29
Abstract: 430,311. Reciprocating pumps or compressors. HERBST, P., 32, Br³ckenstrasse, Bremen, Germany. June 29, 1934, No. 3035/35. Divided out of 427,372. [Classes 8 (i) and 102 (i)] Piston pumps for gases and liquids having pedal actuating means and with the cylinder arranged vertically, are oscillatably suspended the centre of oscillation being above the centre of gravity and above the actuating gear. A container 5, within which is a piston pump, is supported oscillatably at 20 on a frame 21. This frame is continued to provide a support for a wheel and also as a foot support 22 when the pump is to be operated. Pedal gear 24 is used for actuating the piston rod 3. Instead of the pump unit being within the container 5, the container may be mounted above the pump.
Patent GB-260459-A (GB)
Title: Improvements in magazine mounting or supporting arrangements for typographical line composing machines
IPC: B41B11/06
Filed: 1926-02-03
Abstract: .260,459. Hart, H., (Mergenthaler Linotype Co.). Feb. 3, 1926. Magazines for type-bar-making machines.-Relates to means for facilitating removal of the magazines, without disturbing the escapements, in machines having one or more magazines. In the arrangement described, three magazines A, Fig. 2, are supported on separate base-frames A', which conjointly form a shift-frame. The base-frames are pivoted at their rear ends, to permit of separation of the magazines, by means, which may be of the kind described in Specification 190,293, and comprises a shaft J<1>, operable by means of a hand-lever, and connected by arms J<2> and links J<3> to the uppermost frame A', from which are suspended lifting-links connected to the middle frame A<1> Before a magazine can be removed, it must be disengaged from the escapements, which are mounted in a bar or frame D<1> secured to each base-frame. Each frame A<1> has a central lifting and supporting plate E, Fig. 4. pivoted at its upper end E<2>, and having stop shoulders E<3>, which normally engage a transverse rib on the magazine. A longitudinal groove in each plate E is engaged by a corresponding rib on the magazine. The plate E can be lifted by a cam F or the like on a shaft F', which can be turned by means of the usual magazine-supporting arms G, Fig. 2, these arms being suitably formed to engage the ends of the shaft. When thus raised, a magazine can be slid forwards on to the arms G. Projections D<3> on the escapement bars D' support the magazine during its removal, and prevent injury to the escapements. The lifting of a magazine before the matrices are locked therein is prevented by a latch H, Fig. 4, which engages an arm H<1> on the shaft F<1>, and is released by insertion of the usual matrix locking-rod.
Patent GB-401002-A (GB)
Title: Improvements in, or relating to, double-barrel sporting guns of the under-and-over type
IPC: F41A3/60
Filed: 1932-05-05
Abstract: 401,002. Double-barrel sporting guns. SCHOLBERG, P., 24, Rue Morinval, Liege, Belgium. May 5, 1932, No. 3185/33. Convention date, Feb. 26. Divided on 400,987. [Class 119.] Relates to under - and - over double - barrel sporting guns of the kind having a sliding breech-block. According to the invention, the breech-block 3 is locked by means of two keys 10, one on each side. The breech-block is L-shaped and is guided by longitudinal grooves 6 in the breech frame 1. The keys 10 move in vertical grooves 17 in the breech-block and are suspended from a lever 4 pivoted on the breechblock at 5. When the lever is lifted, lateral lugs on the keys are in line with the groove 6, and the breech-block can be moved backward and forward; and when the breech-block is in the forward position, the lugs are in line with vertical grooves 7 in the breech frame, so that a downward swing of the lever 4 locks the breech-block. The lifting of the lever to unlock the breech-block at the same time rocks a tumbler 29 against a spring 25 and brings the end 31 of the tumbler opposite shoulders on the firing-pins 33, so that during the rearward movement of the breech-block the firing- pins are cocked on to sears 37 co-operating with a lever arm on the triggers. The barrels are in one with a block 2 interlocked with the breech frame and secured thereto by a sliding strap 16 as described in Specification 400,987.
Patent GB-907389-A (GB)
Title: An improved apparatus for cooling or drying or heating material in granular or powder form
IPC: B22C5/08
Filed: 1960-01-29
Abstract: 907,389. Cooling, drying or heating granular materials. PARKER MITCHELL ENGINEERING CO. Ltd., and PARKER, W. J. Jan. 30, 1961 [Jan. 29, 1960], No. 3226/60. Classes 34 (2) and 64 (2). [Also in Group XXX] An apparatus for cooling, heating or drying material in granular or powder form, for example for the cooling of core sand used in foundries, comprises an air trunk 10 which may be open at its upper end, means such as the unit 17 for trapping material fed to the trunk in the trunk, a fan or blower 12 which blows air upwardly through a duct to raise and completely surround each particle of material trapped in the trunk and also through a further duct to carry the suspended particles upwardly. Dry sand enters the trunk from a shoot 13 disposed at an angle to the horizontal somewhat greater than the angle of repose of said sand, the opening to the trunk having a baffle 16 and providing admission to the unit 17 in which are two nozzles 19 and 21 leading respectively to ducts 18 and 20 which open adjacent the fan or blower 12. When the latter is not in operation, sand will be above the nozzles without dropping into the passage 27 between the unit and the trunk since the line between the lower end of the baffle and the inner edge of the nozzle 21 is equal to the angle of respose, and will lie within the nozzles at said angle. In operation, cold air is forced into the ducts 18 and 20 and hence to the nozzles where first sand in the nozzle 21 and secondly that in the nozzle 19 is blown upwardly, being further transported upwardly by air issuing through the passage 27 and discharged for collection at the upper end. The apparatus thus acts as an elevator. Thereafter, sand is fed continuously to and is blown up from the nozzle 19. In a modification (not shown) for use with wet materials, the feed shoot 13 is replaced by a vibratory conveyer. If it is desired to heat the material, hot air is blown upwardly from the fan or blower.
Patent GB-142911-A (GB)
Title: Improvements in or connected with bowden wire and like mechanism
IPC: B62M25/04
Filed: 1919-02-10
Abstract: 142,911. Bowden Wire, Ltd., and Sentinella, A. E. Feb. 10, 1919. Bowden mechanism.-In operating-means for Bowden-wire and like transmitting-mechanism, a lever a, turning on a pivot b on a fixed bracket c, has a slot i engaging a pin j carried on the face g of a drum or sector rotating within a casing e on the bracket c and secured to the inner member of a Bowden wire l or the like. The pin-and-slot connexion may be replaced bv a link. A locking- lever n engages notches p in the bracket; or sliding bolt or like means or frictional means comprising spring washers or the like may be used to lock the lever or drum. To vary the angular motion of the drum, which may be more than three times that of the lever, the pin may be adjustable radially in the drum, or may be secured adjustably in the slot i, in which case it engages a radial slot in the drum. The lever may actuate two or more drums secured together and actuating two or more transmission systems either simultaneously or alternatively.
Patent GB-123571-A (GB)
Title: Improvements in Forde-arm Actuating Mechanism for Artificial Arms.
Inventor: DILWORTH OTTO LEGRAND
IPC: A61F2/58
Filed: 1918-02-25
Abstract: 123,571. Dilworth, O. Le G. Feb 25, 1918. Limbs, artificial. - In a limb comprising an upper arm with a forearm pivoted thereto, means are provided for operating the forearm comprising a lever pivoted to the upper arm and so arranged that it may be pressed against the body of the wearer. The upper arm 11 which receives the stump and the lower arm 12 are connected by a pivot 18 passing through straps 19, 48, one of which, the strap 19, is prolonged and has pivoted thereto a link 34. The link 34 is pivoted to a bell-crank lever 33 pivoted to the upper arm and adapted to be actuated by a springy member 32 secured to the opposite side of the arm and provided with a pad 35 which can be pressed against the body. A balancing-arrangement is provided comprising a spring 23, spring-case 22, plunger 25, and strut-rod 29 secured in the pivot 18. The spring-case bears against an abutment 21 which is adjustable by a screw with milled head 110, and the plunger 25 bears on a ball 28 on the rod 29. For attachment purposes, a vest 10 and shoulder plate 14 are employed. An alternative means for bending the arm comprises a cord 30 passing from the back of the fore-arm to the front thereof, then through the upper arm and secured to an anchorstrap 31.