baber/WOPTO huggingface dataset:
Patent GB-843027-A (GB)
Title: Method for recovery of polymers
IPC: C08F10/00
Filed: 1957-10-24
Abstract: Polymer associated with solid catalyst and which has been produced in a low-pressure olefin polymerization is treated with an aqueous alkali metal hydroxide solution, the dissolved catalyst separated and the polymer recovered.  Specified olefins are ethylene, propylene, 1-butene, 1-pentene, butadiene, ethylene-propylene and ethylene-butadiene, the catalyst being chromium oxide, containing hexavalent chromium, associated with one oxide selected from silica, alumina, zirconia and thoria. Sodium and potassium are the specified alkali metals, and the digestion may take place at least 150 DEG F. for at least 30 minutes. Apparatus for carrying out the process is described. Specifications 790,195 and 804,641 are referred to.
Patent GB-361097-A (GB)
Title: Manufacture of azo-dyestuffs insoluble in water
IPC: C09B29/20
Filed: 1930-11-07
Abstract: Azo dyes; azo dyes, forming on the material.--Azo dyes are made in substance, on the fibre or on a substratum by coupling the diazo compound of an aminobenzotrifluoride with a 2 : 3-oxynaphthoic acid arylide.  Vivid orange to scarlet shades fast to light, boiling and washing are obtained.  In examples the following components are specified: 1 - amino - 2 - methoxy- or 2 - chloro - 5 - trifluoromethylbenzene, and 1 - amino - 3 - trifluoromethylbenzene : the 2<1> : 3<1>-hydroxynaphthoyl derivatives of 2- or 4-anisidine, 1-amino-2-methoxy-4- or 5-chlorobenzene, 1 - amino - 2 - methyl - 4 - methoxybenzene, 1 - amino - 2 : 5 - dimethoxy - 4 - chlorobenzene, aniline, o-toluidine, o-phenetedine and 1-amino-2-methyl-4-chlorobenzene.  Specifications 6379/12, [Class 2 (iii), Dyes &c.], and 17279/13, [Class 15 (ii), Dyeing, Processes &c. for], are referred to.  1-Amino-3-trifluoromethylbenzene is made by treating trichloromethylbenzene with antimony trifluoride, nitrating and reducing.  1-Amino-2-chloro-5-trifluoromethylbenzene is made by treating 2-chloro-5-trichloromethylbenzene with antimony trifluoride, fractionating the product to obtain 2-chloro-5-trifluoromethylbenzene, nitrating and reducing.  1 - Amino - 2 - methoxy - 5-trifluoromethylbenzene is made by treating 1-nitro-2-chloro-5-trifluoromethylbenzene with methyl alcoholic potash and reducing the 1-nitro-2-methoxy-5-trifluoromethylbenzene thus obtained.
Patent GB-1292480-A (GB)
Title: Improvements in stainless steel
Inventor: BIEBER CLARENCE GEORGE
IPC: C22C38/00
Filed: 1970-07-10
Abstract: 1292480 Improved stainless steel INTERNATIONAL NICKEL Ltd 10 July 1970 [11 July 1969] 33617/70 Heading C7A A stainless steel comprises in per cent by weight: - Cr 30-36 Ni 2-8 Mo 0À5-5 C less than 0À1 Si up to 3 Ti less than 2 V up to 2  Nb up to 2 Zr up to 2 Ta up to 2 Al up to 2 Mn up to 2 Co up to 10 W up to 4 Fe and incidental impurities - balance, where the total of Ti, V, Nb, Zr and Ta does not exceed 4% and the function Cr + 3Mn + 3Si is from 34 to 48 and where if that function is less than 41 and the steel was produced by air melting, at least one of Ti, Nb, V, Ta or Zr is present. The carbon content is preferably not more than 0À03%. The steels may be poured at temperatures in the range of 1, 540-1, 595‹C., hot finished at 760-816‹C., annealed at 1,038-1,205‹C, cold rolled and finally annealed at 1,066-1,122‹C. Present in the alloy as impurities may be S, H, O. Uses specified for the alloys include seawater and sea atmosphere environments.
Patent GB-961184-A (GB)
Title: Apparatus for guiding and supporting elongate material
Inventor: CLARK PATRICK ALWYNE
IPC: B21B39/22
Filed: 1960-09-30
Abstract: 961,184. Rolling. DAVY & UNITED ENGINEERING CO. Ltd. Sept. 25, 1961 [Sept. 30, 1960], No. 33619/60. Heading B3M. Apparatus for grinding and supporting billets 11 comprises a pair of mutually inclined rollers 12 which remain symmetrically disposed relative to an associated pair of manipulating heads 14 and 15 regardless of the separation, in a given range, of the heads. The rollers 12 are carried by a beam 13 having one end slidably mounted at 18, and a lever 17 pivoted to it at 16. As the head 14 is moved horizontally in either direction a projection 29 of the head causes the lower end of the spring-urged lever 17 to follow the projection and thus adjust the position of the rollers. The spring 28 for urging the lever 17 against the projection is adjustable and mounted on a normally fixed lever 21. To withdraw the rollers 12 downwardly from their normal position a cylinder 30 causes an arm 32 of the lever 21 to be moved anticlockwise, thus lowering the lever 17 and beam 13.
Patent GB-808902-A (GB)
Title: A new or improved method of and equipment for cleansing surfaces of oily deposits
IPC: B08B9/093
Filed: 1954-02-11
Abstract: The subject-matter of this Specification is substantially the same as that described in Specification 808,901, but the claims differ. Specifications 696,631 and 742,844, [Group XVII], also are referred to.ALSO:The subject-matter of this Specification is substantially the same as that described in Specification 808,901, but the claims differ.  Specifications 696,631 [Group II] and 742,844 [Group XVII] also are referred to.
Patent GB-1038658-A (GB)
Title: Improvements in or relating to processes for winding and doffing bobbins
Inventor: DAVIES TERENCE GEORGE
IPC: B65H54/34
Filed: 1964-08-19
Abstract: The radial projection which in the process of winding and doffing and in the bobbin claimed in the parent Specification traps the yarn in the lower turns of the transfer tail, is provided by the upwardly-directed outer portion of a U-shaped clip of wire or metal plate fitted around the rim of the bobbin or a sleeve portion thereof.
Patent GB-1200383-A (GB)
Title: Lens strip optical scanning system
IPC: G02B3/00
Filed: 1967-07-29
Abstract: 1,200,383. Electrostatic photocopying; lenses. RANK XEROX Ltd. July 29, 1967 [July 29, 1966; Aug.1, 1966], No.34022/67. Headings G2A, G2H and G2J. In a document-copying device, e.g. of the electrostatic type, the document D to be copied is placed on a transparent platen 2 secured to a fixed support plate 3 on which the photo-sensitive sheet or plate P is laid, and a movable carriage 4 passes between sheets P and D. The carriage is slidably mounted at one end on a rod 11, and at the other end on a drive screw 10, driven from a motor 6 via gear box 7. Supported on the carriage are a pair of fluorescent lamps L, and an optical imaging system comprising three strips 20, 21, 22 of lens elements. Each strip is formed as a bar having a number of lenses formed along its length in two parallel rows (see Fig.2), one row being staggered with respect to the other, so that the images on sheet P overlap. The strip and the lenses are preferably formed as a single moulded unit of a plastics material. The strips are disposed as shown in Fig. 5; sheet D is in the focal plane of lenses 24 on strip 20, and sheet P is in the focal plane of lenses 27 on strip 22, lenses 26 on strip 21 acting as field lenses. A plate 30 having apertures 31 acting as stops is placed close to strip 20, and a further plate 33 having similar stops 32 is placed close to strip 21. A series of tubular baffles 34 of hexagonal section may be interposed between strips 20 and 21, to prevent light leaking from one ray path to another. As carriage 4 moves along, sheet D is scanned in a series of strips of elemental areas, producing a corresponding image on sheet P which is upright but wrong-reading Fig.4 (not shown). If P is an electrostatic copying plate or drum, then after the powder is applied, the image transferred to the final copy sheet will be right-reading.
Patent GB-307975-A (GB)
Title: Improvements in or relating to area-measuring machines for leather and other sheet material
IPC: G01B5/26
Filed: 1927-12-17
Abstract: 307,975. Turner Tanning Machinery Co., Ltd., (Turner Tanning Machinery Co.). Dec. 17, 1927. Surface areas, computing.-In a Sawyer type of machine the measuring wheel is prevented from rotating before and after the hide reaches and leaves the point of approach of the wheel to the supporting roll, the measuring wheel being held out of contact with the hide and braked during such times. The measuring wheel is mounted on a lever 18 pivoted at 20 and supported adjustably by a counterweighted lever 28. Pivoted on the lever 18 at 44, 58 and pin-andslot connected thereto at 46, 56 are levers 42, 52 carrying rollers 40, 50 protruding slightly beyond the periphery of the measuring wheel. As the work enters it first engages and raises the roller 40 and thereby through the pin and slot 46 elevates the measuring wheel to an extent commensurate with the thickness of the work. The measuring wheel consequently does not begin to rotate until the leading edge reaches the lowest point of the wheel. Similarly as tne rear edge of the work leaves this point the roller 50 takes over the function of supporting the measuring wheel which therefore ceases to be driven. In order to render the control of the wheel more effective a brake 64 pivoted on the lever 18 at 66 and normally resting against an adjusting screw 76 is operative prior to entry and after departure of the work. Before the lifting of the measuring wheel by the work the weight of the wheel and its supporting lever presses the wheel against the brake. As the work is leaving. the roller 40 drops off the rear edge and thus through a contact screw 70 urges the brake against the wheel.
Patent GB-792716-A (GB)
Title: Electrolytic production of the metals titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum or tungsten
IPC: C25C7/00
Filed: 1955-11-30
Abstract: 792,716. Electrolytic production of the refractory metals of Groups IV, V and VI. NORTON GRINDING WHEEL CO., Ltd. Nov. 30, 1955 [Dec. 17, 1954], No. 34257/55. Class 41. Titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, or tungsten is deposited on a continuouslyrotating cathode, from which the deposit is continuously removed, by electrolysis in a fused salt bath composed of one or more alkali or alkaline earth metal halides with at least one anode, which is replaceable, consisting of a carbide of the metal to be produced in a cell having an inert atmosphere. As shown, the cell comprises a graphite hearth 30 carrying a fused alkali or alkaline earth halide salt bath 55 and a cap 33, both electrically heated, surrounded by alumina bricks within a metal housing comprising a box 10 and a removable cap frame 14. The cathode 50 which is of a non-contaminating metal is a friction fit on a motor-driven shaft 40 which is hollow and water-cooled, as is the anode connection to the hearth on which the anode plates 60 rest. The cathodically deposited metal is removed by a scraper 65 which is engaged by a bar 210 on a manually operable rod 211 and falls into a well .75 having a removable box 78. An inert gas, preferably argon, is passed through the cell from a pipe 221 to an outlet pipe 241 in a branch from an optical pyrometer 235 for determining the fused salt temperature and through which by removal of the pyrometer window fresh salt may be added to the bath. The anodes 60 are provided at 275 with bayonet sockets into which bayonet lugs 272 on a rod 270 may be engaged whereby the anodes may be brought into exchange chambers between removable gas lock doors 260, 261, the door 260 having an opening 262 which is substantially filled by the rod 270. The surfaces 225, 251, 71, 72 of the passages through the bricks are lined with gas-impervious alumina plates. Specifications 744,396, 747,834 and 753,031 are referred to.
Patent GB-1397746-A (GB)
Title: Forced commutations invertors
IPC: H02M7/515
Filed: 1972-07-21
Abstract: 1397746 Inverting LA TELEMECANIQUE ELECTRIQUE 21 July 1972 [28 July 1971] 34337/72 Heading H2F In an inverter comprising at least one pair of main thyristors P1, P2 and at least one pair of commutating thyristors E1, E2 and an oscillatory commutating circuit LC, the thyristors are protected against excessive rate of change of current and voltage by means of inductors l1, 12 and shunt circuits comprising inductive resistors R1, 13 diodes d1, non- inductive resistors r1 and capacitors c1, connected as shown, the main thyristors P1, P2 being bridged by diodes D1, D2, connected as shown. As described, two pairs of main thyristors P1, P2 may form a single phase bridge or three pairs may form a three-phase bridge. Fast-acting fuses F1, F2 are included. The main supply V o  may be variable in which case a fixed voltage commutating supply V o1  may be switched in at appropriate times by means of an auxiliary thyristor Th o1 . The action of the inverter is explained by means of waveforms (Fig. 2, not shown). In Fig. 3 (not shown), inductors such as l1 are included between the thyristors and the respective fuse whilst inductor L is replaced by a pair of inductors one on either side of capacitor C.
Patent GB-1479364-A (GB)
Title: Electrical temperature regulator
IPC: H01H37/00
Filed: 1974-08-05
Abstract: 1479364 Thermal switches THERMOSTATUND SCHALTGERA TEBAU GmbH & CO KG 5 Aug 1974 [4 Aug 1973] 34350/74 Heading H1N A temperature regulator comprises thermostat contacts actuated by bimetal 2, and cutout contacts 21, 22 normally pressed into engagement with each other against resilient means tending to open them by a pin 15 between contact 21 and fusible material 18, the cut-out contacts, thermostat contacts and bimetal being spaced apart by insulating members 10 all having registering holes through which a common securing member 1 passes. Fusible material 18 is metal and may be contained in a tapered hole in a cartridge 17 or in a tapered hole directly in member 6, Figs. 4-7 (not shown). Pin 15 may rest directly on the fusible metal, Figs. 4, 6, or on a disc in the fusible metal, Figs. 5, 7.
Patent GB-1397420-A (GB)
Title: Display pack for articles
IPC: B65D25/10
Filed: 1972-07-24
Abstract: 1397420 Display package DICKINSON ROBINSON GROUP Ltd 23 July 1973 [24 July 1972] 34486/72 Heading A4T [Also in Division B8] A display pack comprises a tubular sleeve 10 and a pair of end closures 12, 14 adapted to locate and retain between them an article, e.g. a golf ball 28, to be packaged, at least one of the end closures extending axially into the sleeve 10 and being shaped at its inner end to seat the article so that the said one end closure can provide a plinth for supporting and displaying the article. As shown, the sleeve 10 is cylindrical and is made of transparent acetate, the bottom closure 14 being formed of an end disc 16, a base part 18, and a column 20. The upper closure 12 comprises an end disc 22 and a cap 24. The latter, the part 18, and the column 20 are all hollow and are moulded from thermoplastic material each part 18, 24 being a push fit into the corresponding end of the tube 10 and retained therein by a peelable seal or, an adhesive strip, not shown. The column part 20 rests in a shallow recess 26 in the base part 18, and its upper end, and the opposite surface of the cap 24, are spherically concave to locate the golf ball 28. The top end of the part 18 which lies within the column 20 is also spherically concave to seat another golf ball 30, four additional golf balls 32 being housed in the base part 18. The end closures 12, 74 may be printed or coloured, and shaped, in any desired manner. A particular golf ball, associated e.g. with a memorable performance, may be displayed within the complete pack as shown in Fig. 1, or else the sleeve 10 and cap can be omitted, as shown in Fig.2. Details of performance etc., may be entered on a panel 34 and the score card 36 may be secured to the plinth behind the ball, e.g. by fitting it into the recess 26. The upper end closure may also accommodate articles.
Patent GB-843079-A (GB)
Title: An improved construction for the internal combustion engine of a rotary scythe type lawnmower
IPC: F02F7/00
Filed: 1958-10-29
Abstract: 843,079. Two-stroke engines; cylinders; crankcases; dynamo arrangements. VICTA MOWERS PTY. Ltd. Oct. 29, 1958 [Nov. 15, 1957], No. 34638/58. Classes 7(2) and 7(4). The cast aluminium crankcase 4 and cylinder 2 of the driving engine of a rotary scythe type lawnmower are integral with a mower base-plate 1 having a journal 18 for the engine crank-shaft. Transfer and exhaust ports 6, 7 are provided in the cylinder 2 and in a cast-iron liner 5 around which the cylinder 2 may be cast or which may be inserted after casting of the cylinder; reference is made to transfer ports at each side of the cylinder for tangential scavenging. A crankcase cover 20 has an extension 25 forming with the cylinder 2 a transfer duct for combustible mixture drawn into the crankcase 4 from a carburetter (not shown) via a reed valve and a port 12. A magneto stator 27 is provided, there being on the crankshaft a magneto flywheel (not shown) and a superimposed recoil starter mechanism or starter pulley. An induced air cooling system, or a forced system involving an impeller integral with the magneto flywheel, has a cowl attached to the base-plate 1 and enclosing the entire engine except the starter, the base-plate 1 being possibly apertured for air circulation.
Patent GB-605394-A (GB)
Title: Improvements relating to heat filters for use in optical apparatus
IPC: G03B21/16
Filed: 1945-12-21
Abstract: 605,394. Optical apparatus. CHANCE BROS., Ltd., and HAMPTON, W. M. Dec. 21, 1945, No. 34688. [Class 97 (i)] A heat filter, particularly for optical projection apparatus comprises a plurality of heat absorbing glass or other transparent elements arranged in staggered relation with adjacent edges overlapping. Alternate strips a as shown in cross section are spaced apart. Their edges may be bevelled and cooling fluid directed between them. The strips may be straight or may be concentric annular elements.
Patent GB-1351323-A (GB)
Title: Refractory siliceous cements and their method of production
IPC: C04B7/00
Filed: 1971-07-23
Abstract: 1351323 Refractory cements L WALTER 23 July 197 [4 Aug 1970] 34740/71 Heading C1H A refractory cement contains 75-82% BaO, 14-17% SiO 2 ; less than 3À5% Al 2 O 3 ; less than 1À5% Fe 2 O 3 , less than 2% CaO, less than 1% MgO and less than 1% A.M. oxides. GypsumŒbentonite is added as a retarder. Can be ground with slag to form sea water cements, or with barytes for shielding cements. When mixed with sized crushed aluminosilicate granules it gives a refractory concrete, and with expanded fireclays an insulating concrete.
Patent GB-729904-A (GB)
Title: Improvements in anti-slip and anti-skid chains for wheels with pneumatic or solid tyres
IPC: B60C27/06
Filed: 1953-12-14
Abstract: 729,904. Anti-skid chains. FABREGUE, G. V. Dec. 14, 1953 [July 31, 1953], No. 34751/53. Class 144 (2). An anti-skid chain ladder 1 which is tensioned at its ends 3 when applied to a wheel is provided intermediate its ends with short chain sections 4 which are hooked to the wheel rim to lie tangentially thereof to provide additional securing means. As shown, the chain ends 3 each comprise short sections tangentially 'hooked to the wheel rim and two sections 4 are provided secured to links 7 at intermediate points of the chain 1. The chains 4 may be cross-connected as shown and may be fitted on either or both sides of the wheel. Specification 525,941 is referred to.
Patent GB-866436-A (GB)
Title: Machine for the filleting of cod
IPC: A22C25/00
Filed: 1958-10-30
Abstract: 866,436. Fish filleting. ATLAS A.S. Oct. 30, 1958 [Aug. 29, 1958], No. 34799/58. Class 28 (2). The belly of a cleaned cod is pressed on the barbs 8 of a U-shaped conveyer 7, Fig. 4, which pushes it tail first through two succeeding pairs of spaced rotated disc cutters 30 to 33, Fig. 10, to cut off the fillets from both sides. The vertebrae lie in the hollow of the U-shape 7 while the barbs engage between the side bones. The U- shaped conveyers 7 are at the top of conveyer plates 6 spaced along an endless driven chain. The fish first passes between inclined side-guides 14, Fig. 5, and then over arcuate hinged guides 17, 18, Fig. 9, where a press-down 21, Fig. 9, presses on the back of the fish and other side guides 24, 25 keep in the belly flaps. Another guide, Fig. 11, not shown, may direct the now freed top and bottom flaps against a further pair of disc knives 47, Fig. 13, to separate each bottom fillet from the top fillet and from the vertebrae. Some of the guides are serrated. The serrated guides 49, Fig. 14, serve to tear away the filmy membrane inside the belly flaps. The knives 45, 46 are lifted in time to prevent cutting into the side bones. The conveyer 7 has a spike 11, Fig. 2, with reverse barbs 9 on top.
Patent GB-172223-A (GB)
Title: A new or improved attachment or fastening device for supporting gas and electrical fittings, pendants, and the like
IPC: F16B13/08
Filed: 1920-12-10
Abstract: 172,223. Tonks, G. H. Dec. 10, 1920. Screw sockets. - A device for securing lighting pendants, brackets, and like fittings to ceilings, partitions, &c., comprises an internally-screwed socket 1 having axms 3 pivotally attached thereto and a screw 8 for securing the arms in the supporting position. In use, the arms 3 are passed, whilst in the closed position shown in Fig. 4, through a hole 10 in the plaster or wood of the ceiling &c. and are then allowed to fall into the position shown in Fig. 3, whereupon the screw 8 is tightened so as to maintain them in this position by engagement with the facets 7. A suitable wood block for supporting the fitting may then be attached by means of a screw 14 engaging the lower part of the screwed socket 1.
Patent GB-467429-A (GB)
Title: Improvements in ball or float cocks
IPC: F16K33/00
Filed: 1935-12-16
Abstract: 467,429. Ball cocks. HILL, F. W. Dec. 16, 1935, No. 34881. [Class 135] To enable the operative relation between the float and valve of a ball cock to be varied the float arm is divided near the valve into two pivotally connected portions a long portion d<1> carrying the ball c and a short portion d<2> connected to the valve. An adjusting screw j extending over the edge of the cistern is mounted in a nut pivotally supported by a pillar g<2> upstanding from the short arm portion and has a reduced part at the end engaging an element pivotally mounted in a pillar g' on the long arm part. The screw is fitted with a manipulating head j<1> and a lock nut l. In a modification the adjusting screw is arranged vertically and is provided with right and lefthanded threads engaging nuts pivotally mounted on the long arm portion and an arm on the short arm portion overlying the long arm part. According to the Provisional Specification the upstanding pillars may be formed by bending metal strips and clamping their lower ends to the actuating arms.