baber/WOPTO huggingface dataset:
Patent GB-1371302-A (GB)
Title: Removal of chloride from crude zinc sulphate solutions
IPC: C22B3/34
Filed: 1973-05-11
Abstract: 1371302 Removal of ZnCl2 from solutions SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 11 May 1973 22532/73 Heading C1A ZnCl2 is removed from solutions containing Zn <++>, Cl- and SO4 = (Zn<++> : Clratio more than 0À5) by liquid-liquid extraction with an organic solvent containing a tetrahydrocarbyl ammonium thiocyanate, the extract, which may first be washed with water, being then regenerated by contact with ammonia solution giving the solvent which may be re-used and an aqueous solution. This aqueous solution which contains tetra-ammine zinc chloride may be boiled down in the presence of ammonia chloride to precipitate di-ammine zinc chloride. This may be decomposed by heat to give ZnCl2 and NH3. The tetrahydrocarbyl ammonium thiocyanate, which may have one methyl and three alkyl groups containing 8 to 10 C atoms, may be 0À3- 0À6 M in the organic solvent. Toluene is exemplified and other solvents are listed. The starting solution may be an aqueous zinc sulphate solution containing chloride ions for use in the electrolytic preparation of zine or a solution obtained by dissolving zinc waste containing Cl from fluxes in H2SO4 and the raffinate is then a chloride-free aqueous solution of zinc sulphate. The term tetrahydrocarbyl ammonium thiocyanate is defined as tetrahydrocarbyl aminonium thiocyanate whose hydrocarbyl groups may or may not be substituted.
Patent GB-321218-A (GB)
Title: Improvements in permutation locks
IPC: E05B37/18
Filed: 1928-08-03
Abstract: 321,218. Feldmeyer, J. Aug. 3, 1928. Locks, permutation; hasp locks; padlocks; latches, preventing operation of; latches, sliding. - The permutation discs have integral trunnions arranged loosely in a bed plate to allow of easy removal and are held by a cover plate normally locked by the operating member. In a hasp lock, Fig. 2, the bolt is actuated by a slide 3 notched to receive two rows of discs 1 which have pass-notches 10. The discs are engaged by springs 7 and are retained by covers 6 normally locked by the block 12 secured to the slide 3 and carrying a thumb-piece 9. In a padlock. Fig. 6, the discs are arranged radially and engage a ring 3a having a lug 16 which actuates the bolt 4<a> and a lug engaging a notch 19 in a slide 18 having a key-hole slot to secure a notched stud 17 carried by the cover plate, a spring forcing the plate up when released. The lug 16 is engaged by a ring 9<a> with two knobs for manual operation. A modified form of padlock, Fig. 11, has an operating member 9<e> engaging the bolt 33 and provided with a lug 44 to lock the plate 6<e>, which is in the form of a comb to cover both rows of discs. A single row of discs, Fig. 8, may engage a slide 3<c>, actuated by a thumb-piece 9<c>, and provided with a stud 16<c> engaging a fork 28 on the rigid sleeve 29 of a door-handle to prevent actuation of the handle. The discs may be reset by a plate 34, Fig. 12, having apertures 35 arranged similarly to the discs. To lock a sliding latch 26, Fig. 7, engaged by a pin 25 on a follower 24, the follower is actuated by a pin 16<b> on the ring 3<b> which is extended as a handle 9<b> and engages the discs 1. The cover-plate 6<b> has a stem 17<b> passing through the spindle 23 and secured by a plate within the inner handle 22. When the stem has been released from the spindle, a plate 18<b> can be removed to free the cover 6<b> to reset the discs. In a modification, the stem may be locked by a plate accessible from the outside for use with latches or contact breakers for motor vehicles.
Patent GB-798231-A (GB)
Title: Moulding cores for use in moulding hollow concrete and similar members
IPC: B28B7/30
Filed: 1955-08-05
Abstract: 798,231. Collapsible cores for concrete. EVANS, W. A. Aug. 5, 1955, No. 22548/55. Class 87(2). In a collapsible core in which the core is expanded by moving a bar 15 to the left to cause cam surfaces 16c on expander members 16 to engage rollers 7 on inner core members 2 and thus push them outwards, the outward movement of the members 2 is limited by surfaces 4a on blocks 3 which engage surfaces 10 on end members 9 detachably secured to the outer core members 1 by projections 12 on brackets 13 secured to the members 1. Movement of the bar 15 is limited in one direction by a stop 24 which engages the projection 12 on the upper member 1, and movement of the corresponding bar 20 in the other direction is limited by a stop 25 which engages the corresponding projection 12 on the lower member 1. Slots on the expander members 16 formed by projections 18 engage ribs 19 on the members 1. Stiffening members 26, 27 may be fixed to the members 1, 2, respectively. The rollers 7 may be replaced by cam surfaces and the cam surfaces 16c by rollers. To adjust the height of a core, the screws 14 in the top member 1 are removed to allow the member 1 to be removed, the end plates 9 are changed and the bolts 6 and 22 removed to allow spacer members to be inserted or removed from between the members 3, 5 and 16. Specifications 682,305 and 723,912 are referred to.
Patent GB-778225-A (GB)
Title: Improvements in the production of polymeric materials
Inventor: ROBERTS ROBERT
IPC: C08F10/00
Filed: 1954-08-04
Abstract: Copolymers of ethylene with other unsaturated substances are produced by exposing ethylene and the unsaturated substance to the action of b - or g -rays at a temperature from 0 DEG  to 200 DEG  C. and at a pressure from 50 to 300 atmospheres.  The other unsaturated substance may be vinyl acetate, vinyl chloride, vinylidene chloride, methyl methacrylate, acrylonitrile, styrene, or carbon monoxide. Specification 777,847 is referred to.ALSO:Copolymers of ethylene with other unsaturated substances are produced by exposing ethylene and the unsaturated substance to the action of b - or g - rays at a temperature from 0 DEG C. to 200 DEG C. and at a pressure from 50 to 300 atmospheres.  The other unsaturated substance may be vinyl acetate, vinyl chloride, vinylidene chloride, methyl methacrylate, acrylonitrile, styrene or carbon monoxide.  Specification 777,847 is referred to.
Patent GB-185622-A (GB)
Title: Improvements in selvage motions of looms for weaving
IPC: D03D5/00
Filed: 1921-08-26
Abstract: 185,622. Hodge, J. S., and Maxfield, H. G. Aug. 26, 1921. Selvedge shedding- mechanism ; shedding - tappets.-In making cord selvedges, the selvedgehealds are raised by means of arms C on a shaft c<3> operated by lever mechanism c<2>, c<1>, c from a barrel B, which is adjustably bolted to a star-wheel A driven intermittently by a roller a' on a crank a<5> on a shaft a<6>. This shaft may be driven from the picking-shaft E through gearing, which can be changed when desired, and the star-wheel has a grooved boss engaged by a blade spring, whereby it is prevented from overrunning. The barrel B may be in the form of a cup, having a wall furnished with open slots b<2> to receive bolts b<3> for operating the treadle c and thus raising the selvedge healds. the return movement being effected by means of a spring c<4> &c. Selvedges with from two to five picks in each shed may be woven.
Patent GB-377449-A (GB)
Title: Improvements in or relating to pistons
IPC: F02F3/00
Filed: 1931-08-11
Abstract: 377,449. Pistons. WELLER, S. B., 23, Cutenhoe Road, Luton. Aug. 11, 1931, No. 22659. [Class 122 (i).] An aluminium &c. piston is provided with one or more bearing members C of metal having a different coefficient of expansion e.g. steel or cast iron, and formed with inclined faces A<5>, A<6> engaging similarly shaped surfaces on the piston body. Relative radial movement occurs due to different expansions under heat and controls the piston clearance. The inclined surfaces may be of arcuate form, Fig. 2, in which case the members c are undivided and are mounted on the body by an axial and circumferential movement. Alternatively the body, Fig. 12, may be formed with grooves K3 having inclined sides K4, the bearing members K5 being split. The gudgeon pin may engage slots or holes in the said members to prevent relative rotation. In a modification, Fig. 16, the sleeve P is formed with a rib P<1> having sides inclined .to one another and engaging a groove N<6> in the body N. The rib may be cut away at N<5> adjacent the gudgeon pin bosses.
Patent GB-1104446-A (GB)
Title: Stoving lacquers
IPC: C09D133/06
Filed: 1965-05-28
Abstract: A stoving lacquer contains, dissolved in an organic solvent: (1) 30 to 93 parts of at least one copolymer derived from (a) 15 to 90% of at least one ester of acrylic and/or methacrylic acid and with a monohydric alcohol having not more than 18 carbon atoms per molecule; (b) 5 to 20% of at least one monoester of acrylic and/or methacrylic acid with a dihydric, trihydric or tetrahydric alcohol having not more than 8 carbon atoms per molecule; (c) 5 to 20% of at least one monobasic and/or dibasic a ,b -ethylenically unsaturated carboxylic acid having not more than 6 carbon atoms per molecule; and (d) 0 to 50% of at least one ethylenically unsaturated compound having not more than 18 carbon atoms per molecule and not being identical with any compound from (a) to (c); (2) 5 to 40 parts of at least one heat-curable aminoplast precondensate; and (3) 2 to 30 parts of castor oil, the sum of components (1) to (3) being 100 parts. Monomer (d) is a hydrocarbon, e.g. styrene, a -methylstyrene, o-, m-, or p-methyl styrene, a nitrile, e.g. acrylonitrile, a chlorohydrocarbon e.g. vinyl chloride or vinylidene chloride, an ether, e.g. vinyl butyl ether or an ester, e.g. vinyl acetate or vinyl propionate.  The alcohol of ester (a) is methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol, t-butanol, 2-ethylhexanol, n-duodecanol or cyclohexanol and that of ester (b) is 1,2-ethanediol, 1,2-propanediol, 1,3 - propanediol, 1,4 - butanediol, 1,6-hexanediol, glycerol or pentaerythritol.  Acid (c) is acrylic, methacrylic, maleic or fumaric acid.  The aminoplast may be a condensation product of urea of melamine with an aldehyde and may be etherified with a lower alkanol.  In the examples, monomer (a) is n-butyl acrylate; (b) is the monoester of acrylic acid and 1,4-butanediol or 1,2-ethandiol; (c) is acrylic acid; (d) is styrene or ethyl acrylate; and (2) is a melamine/formaldehyde precondensate etherified with butanol.  The solvent is butanol/xylene. Rutile is incorporated in these lacquers.ALSO:A stoving lacquer comprising (1) a copolymer of n-butyl acrylate, acrylic acid and (i) the monoester of acrylic acid with 1,4-butanediol and styrene or ethyl acrylate or (ii) the monoester of 1,2-ethanediol and styrene, (2) a melamine - formaldehyde precondensate etherified with butanol, (3) castor oil, (4) rutile and (5) a solvent mixture of xylene and butanol is coated on to a steel sheet, which is then exposed to air prior to being stoved at 120 DEG  to 150 DEG  C.  The lacquerings obtained are 50-60 microns thick.  Other materials to be coated are wood, plastics, ceramics, aluminium, magnesium, iron and alloys thereof. The coating which may contain other resins may be applied by spraying or dipping.
Patent GB-797092-A (GB)
Title: Improvements in or relating to spectacle cases
Inventor: STEWART WILLIAM JOHN
IPC: A45C11/04
Filed: 1955-08-08
Abstract: 797,092. Spectacle cases. WATFORD OPTICAL CO., Ltd. Aug. 8, 1956 [Aug. 8, 1955], No. 22777/55. Class 97(1) A spectacle case 1 has secured to the inside or outside of the lid 2 by tubular rivets 4 a name plate of aluminium or soft aluminium alloy on which identification marks may be applied by a relatively hard instrument.
Patent GB-225929-A (GB)
Title: Improvements in and relating to leader gear cable systems and apparatus
IPC: G01S1/02
Filed: 1923-09-11
Abstract: 225,929. Seymour, C., Wilkinson, A., and Atherton, J. F. Sept. 11, 1923. Leader gear.-A leader gear system is adapted to give a visual indication which shows whether a ship is erring to port or starboard of the leader cable. The port coil P and starboard coil S are connected in turn to the input terminals of an amplifier A by a cylindrical rotary distributor R driven by a motor M. The output terminals of the amplifier are connected through a rectifier C to a galvanometer B by distributor segments R<3> so arranged that the current through the galvanometer is intermittently reversed in synchronism with the interchange of the connections of coils P and S. Thus current flows intermittently through the galvanometer B in one direction or ihe other according as coil P or coil S is excited, and the needle takes up a mean position depending on the relative degrees of excitation. In a modification, the distributor R may be replaced by a set of eight spring switches operated by a set of four cams mounted on a common shaft. Each cam D, Fig. 3, may be of insulating material such as red fibre, or of insulated metal, and the corresponding spring 1 may be provided with :a metal roller E or with an insulating pad. Each cam is so designed that the switch 1, 1<1> is closed for slightly more than half a revolution, so that coils P and S are momentarily connected in parallel and the indicator B is momentarily shortcircuited to avoid opening the output circuit of the amplifier; or there may be a time lag between the switching operations in the output and input circuits. It is stated that with the above arrangement a deflection is obtained which rises to a maximum at a short distance, from the cable, drops to zero immediately over the cable, then changes direction and reaches a maximum again at a short distance on the other side.
Patent GB-277320-A (GB)
Title: Improved apparatus for printing fabrics in several colours
IPC: B41F35/02
Filed: 1927-08-30
Abstract: 277,320. Ratignier, M. Sept. 11, 1926, [Convention date]. Rotary intaglio machines; inking-apparatus; cleaning printing-surfaces. - Textile fabrics are printed with a number of differently coloured designs by a rotary machine having a suction washing - device for cleaning the printing cylinder or cylinders after every impression. The cylinder a is provided with the colours from compartments in a colour box f provided with regulating cocks g. A longitudinally reciprocating roller h spreads the colours and a catgut scraper i removes the ink from the non-printing surface of the cylinder After the impression upon the fabric t is effected, the cylinder is cleaned by suction devices c<1>, c<11> and a reciprocating brush d supplied with water or other cleaning fluid through a pipe e. A catgut scraper j is also provided for cleaning the roller h. In a modification the colours are applied to the cylinder a by a paper or other band on which the colours are laid by sprayers and spread by a reciprocating rubber.
Patent GB-1351632-A (GB)
Title: Process for the preparation of bis-4-aminophenyl-methane
Filed: 1971-04-19
Abstract: 1351632 Bis-(4-aminophenyl)-methane MAGYAR TUDOMANYOS AKADEMIA 19 April 1971 [2 March 1970] 22837/71 Heading C2C Bis-(4-aminophenyl)-methane is prepared by pre-mixing a mixture of aniline and a mineral acid with an aqueous solution of formaldehyde or a precursor thereof in a pre-mixing chamber and reacting the resulting mixture in a single stage in a tubular reactor in continuous operation to inhibit mixing of reacted with unreacted materials, the pre-mixing and subsequent reaction being performed at from 60 to 90 C. The mineral acid is preferably hydrochloric acid and the ratio of aniline to mineral acid is preferably not greater than 1À8 : 1. The product may be treated with an aqueous solution of an alkali metal hydroxide.
Patent GB-421959-A (GB)
Title: Device to facilitate the removal of the magazines from a matrix composing and type line casting machine
IPC: B41B11/06
Filed: 1934-08-07
Abstract: 421,959. Type-bar-making machines. INTERTYPE, Ltd., Farnham Road, Slough, Buckinghamshire.-(Assignees of Intertype Corporation ; 360, Furman Street, Brooklyn, New York, U.S.A.) Aug. 7, 1934, No. 22844. Convention date, Aug. 14,1933. [Class 100 (iii)] In matrix-composing and type-line casting machines of the kind having several split magazines a, e resting on supporting frames which in removing the upper magazine parts are tilted backwards, in order to facilitate the removal at the front of the lower part of an underlying split magazine a, the supporting frame or frames of the overlying magazine or magazines e is or are divided into two frame parts f, f corresponding in length to the magazine parts and hinged together at g, so that by tilting the front part of the frame f about the hinge, the lower part of the overlying magazine e is raised independently of the upper part, whereby the lower part of the magazine a is rendered more easily accessible. The lower magazine a rests on the frame d and the lower part of the frame f carries side lugs h which rest on cams i carried by a shaft k journalled in the frame d, while the upper part rests by means of lugs on supports r on the frame d. Cams l also carried by the shaft k rest on the machine frame c at m, and by turning the shaft by a handle n both cams are turned so that simultaneously the lower half of the frame f and its magazine part are swung away from the lower magazine a as shown, and the frame d is tilted back about its pivot b. The upper magazine parts are removed towards the back and the lower parts towards the front.
Patent GB-275140-A (GB)
Title: Device for the conversion of electrical into acoustic oscillations
IPC: H04R15/00
Filed: 1926-09-16
Abstract: 275,140. Jirotka, B. July 27, 1926, [Convention date]. A(lditioii to 260,959. Receivers; loud-speakers. - Magnets 3, 4 of a telephone receiver, the polepieces of which vibrate owing to molecular movement as described in Specification 260,959, are built into sound boxes 13, 14 located opposite one another and arranged so that the magnets are near one another. The sound boxes may be adjustably connected together by screwed bolts or they may be rigidly connected and relative positions of the magnets adjusted by wooden screws 21, 22. A rod or disc magnet may be mounted on one sound-box and a similar magnet with a coil mounted on the other.
Patent GB-387255-A (GB)
Title: Improvements in or relating to tiltable dump car mechanism
IPC: B61D9/02
Filed: 1932-08-16
Abstract: 387,255. Tipping vehicles ; door-operating appliances. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.- (Koppel Industrial Car & Equipment Co. ; Pittsburg, U.S.A.) Aug. 16, 1932, No: 22992. [Class 103 (iv).] In railway tipping vehicles having a body tiltable about a supporting framework and one or more outwardly swing- ing doors controlled automatically by a lever pivotally secured intermediate of its ends to the body and having one end connected to the door whilst the other end is acted upon to control the action of the door the end of the lever remote from the door slidably engages the supporting frame. The body is provided with side doors 6 hinged at the lower ends 7 and is adapted to be tipped to either side about trunnions mounted on brackets 3. The doors are connected through a compression lock link 12 to a lever 10 pivoted to the body, the other end of the lever 10 being adapted to ride on the underframe members 14, Fig. 4. The doors on the ascending side are locked in closed position during tipping by means of a lever which prevents the rotation of the dooroperating lever 10. The locking lever 13 is pivoted to the lever 10 and at its other end is adapted to bear on trunnion members 15 while intermediate of its ends it bears against a stop 16. The lever 13 connected to the door on the descending side leaves the trunnion 15 and stop 16 and so allows the door-operating lever 10 to operate while the other lever 13 engaging the trunnion 15 on the right-hand side of Fig. 4 prevents the lever 10 on the left side from turning. Fig. 14 shows a modification suitable for a tipping wagon which rolls to tipping position as described in Specification 386,271, in which each door-operating lever 109 is provided with a side projection 110 with which the corresponding locking lever 106 contacts to keep the door closed on the ascending side during tipping. Each lever 106 is pivoted to the body and to the underframe and on the descending side the door-operating lever 109 slides off the lever 106 and allows the door to open by gravity, the free end of the lever 109 riding on the underframe controlling the opening.
Patent GB-422068-A (GB)
Title: Improvements in or relating to loading apparatus of the scraper-loader type
IPC: E21F13/06
Filed: 1933-08-17
Abstract: 422,068. Scraper-apparatus for loading loose materials. HOLMAN BROS., Ltd., Camborne, and KEAST, J. B., 39, Trelawney Road, Camborne, Cornwall. Aug. 17, 1933, No. 23013. [Class 78 (iv)] In loading-apparatus of the kind in which a scoop or scraper 21 for delivering earth, coal, &c., into a truck 20, is hauled up a ramp 11 by a rope passing round a sheave 25 near the upper end of the ramp, the ramp overhangs the supports 3 and terminates in a horizontal portion, and the discharge opening commences in the overhanging inclined part of the ramp as at 18 so that the haulage rope is free from contact with the ramp. The slope of the ramp may be equal to or less than that of the rope when the scraper is at the bottom of the ramp. The horizontal part of the ramp is formed by a U-shaped member 17 of channel section, presenting a curved end when the apparatus is moved forward on the rails 6. The edge 19 of the discharge opening is formed as a downwardly-turned lip. The lower end 12 of the ramp is slotted to engage the rails, is hinged at 13, and can be secured in raised position by hooks 16 for transport. The ramp is provided with raised sides 34. The apparatus is mounted on wheels and carries a motor-driven twindrum windlass 22 for the head and tail ropes 26, 27. Reference has been directed by the Comptroller to Specification 379,377.
Patent GB-442537-A (GB)
Title: Wave transmission networks
IPC: H03H7/075
Filed: 1934-08-09
Abstract: 442,537. Impedance networks. STANDARD TELEPHONES & CABLES, Ltd., ConnaughtHouse, Aldwych, London.-(Western Electric Co., Inc. ; 195, Broadway, New York, U.S.A.) Aug. 9, 1934, No. 23056. [Class 40 (iii)] The series arms of a filter are provided with inner electrostatic screens 15, 16 to which they are connected at 24, 25, and outer screens 27, 28 which are earthed at 32, 33. The shunt arms require only single screens 20, which are connected to the earthed terminals of the arms. In this way stray capacities are localized and made definite so that they can be brought into calculation in designing the filter. Specifications 142,115 and 186,198, [both in Class 40 (v)], are referred to.
Patent GB-250896-A (GB)
Title: Improvements relating to vacuum apparatus such as electric incandescent lamps, thermionic valves, and so forth
IPC: H01J7/18
Filed: 1925-09-16
Abstract: 250,896. Fischer, C. H. April 15, 1925, [Convention date]. Vacuum and R÷ntgen-ray tubes.-To remove the causes of deterioration of the vacuum in lamps, vacuum and R÷ntgen-ray tubes &e., due to moisture, dust, grease, &c., the bulbs are rinsed after exhaustion with a saturated vapour which does not contain metal of which filaments are usually made, and which during the rinsing is below its critical temperature, fresh vapour being passed into the bulb after rinsing up to a pressure of 0.4 mm. of mercury. The vapour may consist of aluminium chloride or arsenic fluoride. According to the Specification as open to inspection under Sect. 91 (3) (a), the pressure of the vapour finally introduced may reach 30 mm. This subject-matter does not appear in the Specification as accepted.