baber/WOPTO huggingface dataset:
Patent GB-773789-A (GB)
Title: Improvements in or relating to hydraulic jacks
Inventor: HISTON ROBERT
IPC: B66F3/42
Filed: 1953-12-08
Abstract: 773,789. Straightening damaged conveyer flight bars. WILD & CO., Ltd., A. G. Dec. 1, 1954 [Dec. 8, 1953], No. 34072/53. Class 83 (4). [Also in Groups XXIX and XXX] The " flight " bars, which maintain two chains on a coal conveyer at their correct distance apart, are straightened by an hydraulic jack without removing them from the conveyer. The jack has legs which fit over bolt heads on an adjacent bar, thereby giving suitable anchorage to the jack. The plunger of a pump operating the jack opens valves when at one extreme end of its stroke to lower the jack. Movement of a handle 21 reciprocates a plunger 7 of the pump 3 mounted on the end of the jack comprising a tubular ram 2 in a cylinder 1. Oil is drawn through a valve 14 from a pipe 12 extending into the ram and is forced through a valve 17 to extend the ram. To lower the ram, the handle 21 is moved to an inoperative position in which a spring-loaded catch 26 engages a bracket 28 and the plunger engages a spigot 33 and also a tubular member 35 with a lip 36, thereby opening the valves 14, 17 so that the oil returns to the reservoir. The ram forms a reservoir, but in a modification a separate reservoir is provided. In a further modification, the oil is contained in a bellows of natural or synthetic rubber or of a synthetic plastic inside the ram. The legs are pivoted on the jack and are held by spring clips against the jack when not in use. The stoke of the jack is governed by the amount of oil in the reservoir which is designed to prevent overfilling.
Patent GB-1390476-A (GB)
Title: Hunting gun
IPC: F41A3/00
Filed: 1973-07-18
Abstract: 1390476 Small arms BENELLI SpA DIVISIONE ARMI 18 July 1973 [18 July 1972] 34117/73 Heading F3C A gun for hunting comprises a bolt assembly having a locking bolt head 1 and a floating element 9 which reciprocates axially with respect to the locking bolt head 1 and unlocks the latter during movement in one of the two axial directions, and a spring 10 which is interposed between the locking bolt head 1 and the floating element 9. The locking bolt head 1 has a surface 15 provided with projections 3 which are engagable in recesses 14 provided in the cylindrical internal surface of the breech 7, a surface 16 which is engagable with a surface 13 of the floating element 9 of the bolt and slidable thereon during initial internal movement of the floating element 9 after firing so as to maintain the projections 3 in the recesses 14 of the breech 7 and thus prevent a premature opening of the breech, the surfaces 16, 13 being parallel to the breech axis, and has surfaces 8 which are inclined with respect to the breech axis and are engagable with surfaces 12 of the floating element 9 and slidable thereon during the return movement of the latter so as to permit the projections 3 to disengage from the recesses 14 in the breech. The surface 15 of the locking bolt head, the projections 3 and the recesses 14 of the breech 7 are curved. The surfaces 16 of the locking bolt head 1 and the surfaces 13 of the floating element 9 are flat. The locking bolt head 1 has a cylindrical section which closes the cartridge chamber. During firing of the gun a cartridge 2 is retained in the cartridge chamber 17 by the locking bolt head 1 as shown in Fig. 1, the projections 3 being received by the recesses 14. The floating element 9 maintains its position for a time during the recoil movement of the gun and compresses the spring 10, the latter eventually moving the floating element away from the chamber 17 to the position shown in Fig. 2, the inclined surfaces 8, 12 of the locking head 1 and the floating element 9 respectively allowing disengagement of the projections 3 from the recesses 14 so that the locking head 1 can complete its recoil movement and cartridge case 21 can be ejected. The return of the bolt assembly effects re-loading of the chamber and locking of the bolt.
Patent GB-341553-A (GB)
IPC: C07C46/02
Abstract: 341,553. Anthraquinone homologues. JOHNSON, J. Y., 47, Lincoln's Inn Fields, London.-(I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany.) Aug. 19, 1929, No. 38437/30. Divided on 340,509, and addition to 327,128, [Class 2 (iii), Dyes &c.]. [Class 2 (iii).] Homologues of anthraquinone are made by treating the condensation products of one molecular proportion of benzoquinone with two molecular proportions of two different I : 3-butadienes, or the rearrangement products thereof, or the tetrahydroanthrahydroquinones, tetrahydroanthraquinones or quinhydrones obtainable therefrom by mild dehydrogenation, in acid media with salts of metals capable of assuming a lower valency, e.g. ferric, cupric or mercuric salts. The metal salts may be employed in quantities less than those theoretrically required, if the operation is effected in the presence of agents, such as oxygen or air, capable of reforming the cations of higher valency from those of lower valency formed in the reaction. The concentration of the acid may be varied within wide limits, and in some cases the acid arising from hydrolysis of the aqueous solutions of the salts is sufficient. In examples, (1) the condensation product from benzoquinone, 1 : 3- butadiene, and isoprene is heated with ferric chloride in water, under pressure, to form 2- methylanthraquinone, and (2) the condensation product from benzoquinone and 1 : 3-butadiene (example 1 of Specification 324,661, [Class 2 (iii), Dyes &c.]), is further condensed with 2: 3-dimethyl-1 : 3-butadiene, and the product heated with ferric chloride solution and acetic acid under pressure ; 2: 3-dimethylanthraquinone is obtained.
Patent GB-1463301-A (GB)
Title: Polymer properties
IPC: A61F2/16
Filed: 1973-07-18
Abstract: 1463301 Polymerizing monomers in a polymer D J HIGHGATE 17 July 1974 [18 July 1973] 34188/73 Heading C3P The properties of a solid cross-linked polymer of at least one alkyl (meth)acrylate, hydroxyalkyl (meth)acrylate or acrylamide are modified by introducing a monomer either by swelling the article in liquid monomer or by swelling in an inert liquid followed by exchange with a monomer then polymerizing the monomer in the swollen polymer, e.g. by irradiation, the monomer being a mixture of an alkyl (meth)- acrylate or N-vinyl-2-pyrrolidone and a crosslinking agent. In examples N-vinyl pyrrolidone/  methyl methacrylate/allyl methacrylate copolymer is swelled with methanol or acetone then exchanged with methyl methacrylate/allyl methacrylate mixture and subjected to gamma radiation. The exchange may be incomplete or the swelled polymer may be subjected to vacuum before irradiation. Cross-linked methyl methacrylate polymer is swollen in N-vinyl pyrrolidone containing various amounts of allyl methacrylate then irradiated with a Co<SP>60</SP> source.
Patent GB-1317873-A (GB)
Title: Nylon extrusion coating
IPC: B29C48/08
Filed: 1971-07-21
Abstract: 1317873 Laminates MILPRINT Inc 21 July 1971 [31 Aug 1970] 34206/71 Heading B5N Molten nylon at 232-288 C. is discharged from an extruder 10 into a die 16 from which it issues as a molten web on to the surface of a rotating drill roll 21 and in a circumferential direction relative to the roll and substantially normal to a plane containing the lips of the die 17, 18, a zone A between the molten nylon web and the underlying surface of the wall being maintained at sub-atmospheric pressure, the extruded nylon is cooled on the roll to <93 C., to form a transparent web, which is withdrawn from the roll, a surface thereof is subjected to corona discharge treatment e.g. by means of electrode 30 and the nylon is joined to a substrate web with the corona treated surface in contact with the substrate. The substrate may be polyethylene, polypropylene, vinyl or polyester, aluminium foil, paper, cardboard or Cellophane (R.T.M.). Primers e.g. polyurethane may be used to aid adhesion between the nylon and substrate.
Patent GB-467234-A (GB)
Title: Improvements in or relating to the production of oil soluble resins
IPC: C08G8/28
Filed: 1935-12-10
Abstract: Oil-soluble resins are derived from xylenol by separating crude xylenol by distillation into fractions the components of which show substantial uniformity with respect to rate of reaction with aldehydic substances, reacting the fractions with an aldehydic substance under varying reaction conditions corresponding to the varying reactivity with the aldehydic substance and blending the various products so obtained.  Alternatively the various fractions may be reacted in the same mass in the order of their increasing reactivity.  Other phenolic substances showing a similar rate of reactivity may be blended with the fractions. Aldehydic substances include formaldehyde, hexamethylene tetramine, acetaldehyde, benzaldehyde, furfuraldehyde or ketones. In examples aqueous formaldehyde is condensed in the presence of oxalic acid with fractions having the boiling range (1) 210--218 DEG  C. (comprising 2.4-xylenol and 2.5-xylenol), (2) 216--229 DEG  C. (comprising 3.5-xylenol, 3-4-xylenol and a little 2.3-xylenol), (3) 223--229 DEG C. (comprising 3-4-xylenol and 2.4.6-trimethylphenol and the products blended, or condensation of fraction (1) was commenced, ingredients for 8 fractions (3) added and subsequently ingredients for fractions (2) added and condensation completed.  By way of comparison details for the preparation of a condensation product from 3.5-xylenol, aqueous formaldehyde and oxalic acid are included.  The products are soluble in oils such as tung, perilla, cotton seed, corn, or fish oils and fatty acids such as oleic, linoleic and linolenic acids and may be used blended with oils together with solvents (petroleum ether, turpentine), driers (cobalt or manganese linoleate), pigments or colouring materials as varnishes.  The products may also be blended with natural resins such as rosin, congo dammar or copal, or used as a substitute for natural resins in rendering synthetic resins oil-soluble.  The products may be used for coating leather and fabrics for motor-car hoods, tents, and golf-club handles. Specification 467,112 is referred to.  The Specification as open to inspection under Sect. 91 refers in general to the condensation of aldehydic substances with a xylenol or mixture of xylenols which is substantially free from isomers or homologues having a materially different rate of reaction with the aldehydic substance.  This subject-matter does not appear in the Specification as accepted.
Patent GB-381018-A (GB)
Title: Improvements in or relating to six cylinder reciprocating engines
IPC: F02B75/18
Filed: 1931-12-10
Abstract: 381,018. Four-stroke engines. LIENHARD, G., 6, Rue Leon Vaudoyer, Paris. Dec. 10, 1931, No. 34314. Convention date, Dec. 18, 1930. [Class 7 (ii).] In an engine provided with six cylinders 1d, 2d, 3d, 1g, 2g, 3g arranged in two groups of three set at an angle of 90‹ to each other, the pistons of corresponding cylinders are connected to the same cranks 4a, the shaft being provided with three cranks at 120‹. An arrangement of counterweights is provided on the crank webs. The cylinder heads are closed by blocks 11d, 11g, and the distribution controlled by cam-operated poppet valves 12d, 12g. The ignition takes place in the order 1d, 1g, 2d, 2g, 3d, 3g ; the angular distance between the ignition in cylinders 1g and 2d, 2g and 3d, 3g and 1d is 150‹. The primary inertia forces for each group of two cylinders engaging one crank are balanced by centrifugal force.
Patent GB-385104-A (GB)
Title: Improvements in and relating to episcopes or apparatus for the projection of opaque objects
IPC: G03B21/06
Filed: 1931-12-12
Abstract: 385,104. Optical-projection apparatus. CHARLIER, P. L., The Nook, Ben Rhydding, Ilkley, Yorkshire. Dec. 12, 1931, No. 34446. [Class 97 (i).] An episcopic projector comprises a casing B, a tube T carrying a lens system A adjustable for focusing, and lamps Ll arranged in a ring around the tube T, or around a tube Tx forming an extension of it, to illuminate the object in a carrier S. The lamps may be of ordinary form, or may comprise a tubular lamp of ring form or two or more such lamps forming a ring ; they may be carried by a reflecting or other shield L secured to the tube or to a screen C, and may extend close to the tube but not materially beyond its end T<1>. The carrier S may be slidable in a lid B<1> having an aperture B<2>, and the casing may have an asbestos or like lining and ventilation apertures. The casing may carry an erecting mirror.
Patent GB-1518187-A (GB)
Title: Production of partially hydrolyzed acrylamide polymer or copolymer
IPC: C08F8/00
Filed: 1975-08-19
Abstract: 1518187 Hydrolysis of acrylamide polymers KYORITSU YUKI CO Ltd and MITSUBISHI CHEMICAL INDUSTRIES Ltd 19 Aug 1975 34466/75 Heading C3P Partial hydrolysis of acrylamide homopolymers and of water-soluble acrylamide copolymers with an alkaline substance is effected in the presence of both water and a water-miscible organic solvent in which the polymer is insoluble, the total amount of water and organic solvent being more than 5 times by weight of that of the polymer or copolymer. The co-monomer in the copolymer may be methacrylamide, vinyl acetate or vinyl sulphonic acid. Suitable water-miscible organic solvents are methanol, ethanol, propanol, acetone and methyl ethyl ketone, and the mixture may also contain a water-immiscible organic solvent, e.g. cyclohexane, benzene, toluene or kerosene. In Examples the alkaline substance is NaOH or Na2CO3. The products contain less free acrylamide than conventionally.
Patent GB-1000032-A (GB)
Title: Improvements relating to electrical capacitors
IPC: H01G4/248
Filed: 1960-10-07
Abstract: 1,000,032. Capacitors. W. SCHICK, and STABILITY RADIO COMPONENTS Ltd. Oct. 9, 1961 [Oct. 7, 1960], No. 34485/60. Heading HIM. [Also in Division B3] An electrical capacitor with electrodes metallized on dielectric layers has at least one end piece with at least one boundary thereof located contiguously of the edge coatings of the layers and the assembly is dip soldered to bond the edge coatings together and to the end piece. In Fig. 2 four silvered mica capacitor plates with electrode layers 2, 3 overlying the edges and separated by staggered gaps 4 are held together so that the edge silverings of opposite coatings are disposed together, and the plates are bonded by thin brass or copper end pieces 5 with rectangular apertures 6 therein having leads and passing through punched-out loops. The end pieces are bent over (Fig. 3) and dipped in tin/lead solder to bond them to the edges of the coatings, after which the capacitor is impregnated in wax and enclosed in a case of loaded epoxy or phenolic resin (Fig. 6). The lead wires may project axially or the end pieces may be tagged. The perforations may be circular or capillary or may be omitted. In a modification (Figs. 7 to 9, not shown) a single silvered mica plate is enclosed between plain mica plates silvered at the ends, and similar bent-over end pieces and leads are applied over the ends and dip soldered, after which the capacitor is impregnated and encased as before. The Provisional Specification refers to fitting metallized components other than capacitors with similar end pieces.
Patent GB-846951-A (GB)
Title: Improvements in or relating to balancing machines
IPC: G01M1/04
Filed: 1957-11-05
Abstract: 846,951. Coupling wheels to shafts. HOFMANN, D., and HOFMANN, R., [trading as HOFMANN KOMMANDIT-GESELLSCHAFT MASCHINENFABRIK GEB.]. Nov. 5, 1957 [Nov. 29, 1956], No. 34509/57. Class 80 (2). Apparatus for securing a vehicle wheel 11 to the shaft 1 of a balancing machine comprises a hub member 3 mounted on the shaft and carrying axially-projecting stubs 4 positioned to pass through the fixing holes for the wheel, a clamping - member 6 carrying tubular centring spigots 7 arranged to engage the portions of the stubs 4 projecting from the wheel, and clamping means 8 operative between the spigots 7 and abutments on the stubs 4 to clamp the spigots against the wheel. The spigots 7 have tapered ends to engage the wheel holes, and are rigid with the clamping member 6 which carries headed pins 10 bearing against cam surfaces on a face of the clamping. means 8. The clamping means 8 has a radial flange which locates against abutments formed by recesses 5 in the stubs 4, the flange being recessed at its periphery to allow axial movement before it is rotated to clamp the member 6 and spigots 7 against the wheel. In a modification, axial clamping movement of the member 6 is produced by screw-threads on the axial flange 6a and in the bore of the clamping means 8.
Patent GB-845067-A (GB)
Title: Process for the production of polyethers
IPC: C08G65/34
Filed: 1958-10-28
Abstract: Thiodiglycol is condensed to form polyethers by heating with an aliphatic and/or aromatic amino sulphonic acid, in an amount of 0,01 to 10% by weight, at temperatures above 100 DEG C. and removing the water split off.  Polyhydric alcohols such as diethylene glycol or trimethylol propane, and aromatic amines such as aniline, or amino alcohols, may be included in the reaction mixture.  Specified catalysts are o-, m- and psulphanilic acids, benzidine and naphthylamine sulphonic acids, aminophenol sulphonic acids, aminodiphenyl methane sulphonic acids; disulphonic acids such as 2-aminotoluene-3,5-disulphonic acid and diamino sulphonic acids such as 2,5-diaminobenzene-1,3-disulphonic acid; phenyl taurine, sulphaminic acid and imino disulphonic acid.  The final phase of the condensation may be carried out in vacuo, and the catalyst may be removed by washing with water.  Examples are given, the products varying from oils to waxes and viscous resins.ALSO:Thiodiglycol is condensed to form polyethers by heating with an aliphatic and/or aromatic amino sulphonic acid, in an amount of 0,01 to 10% by weight, at temperatures above 100 DEG C. and removing the water split off. Polyhydric alcohols such as diethylene glycol or trimethylol propane, and aromatic amines such as aniline, or aminoalcohols, may be included in the reaction mixture.  Specified catalysts are o-, m- and p-sulphanilic acids, benzidine and naphthylamine sulphonic acids, aminophenol sulphonic acids, aminodiphenyl methane sulphonic acids; disulphonic acids such as 2-aminotoluene -3,5-disulphonic acid and diamino sulphonic acids such as 2-5-diaminobenzene- 1,3-disulphonic acid; phenyl taurine, sulphaminic acid and imino disulphonic acid. The final phase of the condensation may be carried out in vacuo, and the catalyst may be removed by washing with water.  Examples are given, the products varying from oils to waxes and viscous resins.
Patent GB-1065975-A (GB)
Title: Apparatus for measuring lengths
IPC: G01D5/38
Filed: 1964-08-24
Abstract: 1,065,975. Electric selective signalling. J. HEIDENHAIN, [trading as WENCZLER & HEIDENHAIN]. Aug. 24, 1964 [Aug. 23, 1963], No. 34544/64. Heading G4H. In a displacement digitizer of the type having a.lined plate, bearing two scales a quarter of the grid constant out of phase, moving over a fixed scale, the lined plate has an extra scale in phase with one of the first two so that by additively mixing the signal obtained by sensing it with that from the latter, skew of the lined plate is corrected for.
Patent GB-1221364-A (GB)
Title: Amplifier circuit
IPC: H03K3/02
Filed: 1968-07-19
Abstract: 1,221,364. Transistor pulse amplifier. IWASAKI TSUSHINKI K.K. 19 July, 1968 [21 July, 1967], No. 34618/68. Heading H3T. A pulse amplifier contains two transistors 1, 2 of complementary type having their collectors connected through a diode 3, the transistor 1 operating to amplify a pulse received at 8 without saturating or switching off, and the transistor 2 being switched on, from its normally off state, at the end of the pulse in order to steepen the falling edge of the output pulse. The input pulse is differentiated before being applied to transistor 2 to provide a positive spike to turn on the transistor at the appropriate time. The diode 3 is normally reverse biased, but when transistor 2 turns on, its collector potential falls more rapidly than that of transistor 1, which is turning off, due to the collector capacity of transistor 1; the diode then conducts for a brief period (13, Fig. 3, not shown) to steepen the fall edge of the output pulse (12).
Patent GB-1130290-A (GB)
Title: Diazotype material
IPC: G03C1/54
Filed: 1967-07-27
Abstract: 1,130,290. Diazonium compounds. VAN DER GRINTEN N.V. 27 July, 1967 [11 Aug., 1966], No. 34622/67. Heading C2C. [Also in Division G2] The invention comprises compounds of formula wherein X is an anion and Y, Z are halogen atoms.
Patent GB-1222250-A (GB)
Title: Urinary drainage bag
IPC: A61M1/00
Filed: 1968-07-19
Abstract: 1,222,250. Packages. ELLIOT LABORATORIES Inc. 19 July, 1968 [20 Sept., 1967], No. 34630/68. Heading B8C. [Also in Divisions A5 and F2] A package which may contain a surgical drainage assembly comprises a thin plastic, e.g. polyethylene, film package or wrapper sealed except for one or more slits or nicks therein. Before use the whole package is placed in a sterilizing chamber and a sterilizing gas, e.g. ethylene oxide is fed therethrough, whence it flows through the slits and sterilizes the contents.
Patent GB-1121612-A (GB)
Title: Storage heaters
Inventor: DENT HARRY
IPC: F24H7/04
Filed: 1964-08-25
Abstract: 1,121,612. Electric storage space heaters. J. LUCAS (INDUSTRIES) Ltd. 8 Oct., 1965 [25 Aug., 1964], No. 34673/64. Heading F4U. In space heaters of the kind in which hot air which has been heated in passages of the storage blocks 12 is mixed with cold air which by-passes the blocks and is controlled by a thermostatic valve 15, the hot air passes through a number of tubular members 17 extending across the path of the cold air issuing from the valve each tube being open for the escape of heated air on its side remote from the valve. A fan 16 draws in air part of which flows through the storage block and part passes through the valve 15 which comprises slotted plates one of which is movable by a bi-metallic element extending into the heat storage material 12. Each tubular member 17 is cut away slantwise on its side remote from the valve to define an opening for the discharge of heated air, the remaining portion of the tubular element being smaller at the end remote from its inlet end.
Patent GB-175812-A (GB)
Title: Improvements in collar and like studs
IPC: A44B3/00
Filed: 1920-12-08
Abstract: 175,812. Turner, A. B., (Sadleir, H. S.). Dec. 8, 1920. Studs.-Relates to a stud of the type having a flat shank and a flat head. The pivot d for fastening the base a to the head c is formed by a slightly bowed split-pin.
Patent GB-191375-A (GB)
Title: Improvements in vehicle wheels
IPC: B60B25/14
Filed: 1922-12-20
Abstract: 191,375. Tap, J. Jan. 4, 1922, [Convention date]. Tyre attachments to rims.- A tyre-retaining flange 3, Fig. 3, is held to a wheel by a web 4 passing over hocks 6 on the wheel and locked by segmental ring engaging the heads of the hooks. One of the joints between the ring segments is secured by a pin 14 having a projection 15 which passes through a slot 22 in the wheel 2 and the segments 8, 10; the pin 14 is then rotated until the projection registers with another slot 17 in the outer part only of the segment 8, into which slot it is forced by a spring 18, thus preventing accidental displacement. A spring 16 withdraws the pin 14 when the projection 15 is turned to register with the slot 22. The remaining joints are hinged as shown in Fig. 4. A rubber ring 21 may exclude moisture, dirt &c. from the tyre.