baber/WOPTO huggingface dataset:
Patent GB-669059-A (GB)
Title: Improvements in and relating to the treatment of artificial polythiourea threads, filaments, fibres and the like
Filed: 1949-03-02
Abstract: Polythiourea threads are immersed in an aqueous bath containing an aldehyde or a substance yielding an aldehyde under the conditions of treatment, washed until they are substantially free from the contents of the bath and then dried.  The treatment renders them dimensionally stable and resistant to boiling water. The preferred aldehyde is formaldehyde, which may be used as such or produced by the conditions of the treatment from hexamethylene tetramine.  Other aldehydes which may be used are acetaldehyde and glyoxal.  A suitable bath may contain about 8 to 20 per cent by weight of formaldehyde and about 2 per cent of sulphuric acid. The sulphuric acid content should not exceed 5 per cent.  The treatment may be carried out at room temperature, but temperatures of from 30 DEG  to 50 DEG  C. are preferred.  The time of treatment depends on the concentration of aldehyde and the temperature of the bath but may be from 15 minutes to 2 hours or more.  If desired, the threads may be hardened in a series of baths at increasing temperatures using rollers or reels, partly or completely immersed in the baths.  The threads may be stretched before, during or after the treatment.  In an example (all percentages by weight) polythiourea threads are immersed for 1 hour at 50 DEG  C. in an aqueous solution containing 10 per cent formaldehyde and 2 per cent sulphuric acid.  They are then washed and dried.  On heating under pressure for 1 hour in water at 160 DEG  C. they are substantially unaffected.  Specifications 524,795, 534,699, 574,739 and 660,905 are referred to.ALSO:Fabrics, either knitted or woven, comprising polythiourea threads are immersed in an aqueous bath containing an aldehyde or a substance yielding an aldehyde under the conditions of treatment, washed until they are substantially free from the contents of the bath and then dried.  The treatment renders them dimensionally stable and resistant to boiling water.  The preferred aldehyde is formaldehyde, which may be used as such or produced by the conditions of the treatment from hexamethylene tetramine.  Other aldehydes which may be used are acetaldehyde and glyoxal.  A suitable bath may contain about 8 to 20 per cent by weight of formaldehyde and about 2 per cent of sulphuric acid. The sulphuric acid content should not exceed 5 per cent.  The treatment may be carried out at room temperature, but temperatures of from 30 DEG  to 50 DEG  C. are preferred.  The time of treatment depends on the concentration of aldehyde and the temperature of the bath but may be from 15 minutes to 2 hours or more.  If desired, the fabrics may be hardened in a series of baths at increasing temperatures using rollers or reels, partly or completely immersed in the baths. Specifications 524,795, 534,699, 574,739 and 660,905, [Group IV (a)], are referred to.
Patent GB-1447315-A (GB)
Title: Photopolymerizable composition and light-sensitive elements containing this composition
IPC: C09D11/00
Filed: 1974-02-07
Abstract: 1447315 Photopolymerizable compositions FUJI PHOTO FILM CO Ltd 7 Feb 1974 [7 Feb 1973] 05776/74 Heading C3P [Also in Divisions G2 and C2] Photopolymerizable compositions comprise (a) 80 to 50 parts by weight of at least one divinylurethane compound of the formula in which R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> each represent H or methyl, n has a value of 1 to 3, A represents a divalent residue of a cyclic carboxylic acid anhydride having 4 to 10 carbon atoms, B represents -R<SP>4</SP>- or in which R<SP>4</SP> represents a C 4 -C 13  alkylene group, a cycloalkylene group or an arylene group (any of these R<SP>4</SP> groups being optionally interrupted by another group (e.g. phenylene) or optionally substituted by a methoxycarbonyl group) and R<SP>5</SP> represents an alkylene group having 2 to 8 carbon atoms or an alkyleneoxyalkylene or poly(alkyleneoxy)alkylene group in which the alkylene groups have 2 to 4 carbon atoms; (b) 20 to 50 parts by weight of at least one organic high molecular weight polymer miscible with component (a) and having carboxyl groups on the side chains and an acid number of 30 or more, components (a) and (b) together totalling 100 parts by weight; and (c) 0À01 to 10 parts by weight of at least one photopolymerization initiator. The divalent residue A in component (a) may be derived from such acid anhydrides as phthalic, tetrahydrophthalic, hexahydrophthalic, succinic, maleic, 3,6-endomethylene- #<SP>4</SP> - tetrahydrophthalic, 3,6 - endoxy - #<SP>4</SP>- tetrahydrophthalic, α - chloromaleic, α - phenylmaleic and glutaric anhydrides. Useful as polymer component (b) are such polymers as cellulose acetate phthalate, hydroxypropyl methyl cellulose phthalate, hydroxypropyl methyl cellulose acetate hexahydrophthalate, reaction products of polyvinyl alcohol with cyclic acid anhydrides, copolymers of acrylic, methacrylic, itaconic or crotonic acid, and copolymers of maleic anhydride partially esterified with an alcohol. Photoinitiators used in the examples are benzoin ethyl ether and 3- methyl - 2 - benzoylmethylenenaphtho(l,2-α)- thiazole; other photoinitiators are also disclosed. The compositions may optionally include other components such as thermal polymerization inhibitors and image-colouring agents. The compositions are useful for forming relief images which are developable with aqueous alkaline solutions optionally including a water-soluble organic solvent.
Patent GB-1071447-A (GB)
Title: Wound capacitor and method of making the same
IPC: H01G4/228
Filed: 1966-02-07
Abstract: 1,071,447. Capacitors. EIRE TECHNOLOGICAL PRODUCTS Inc. Feb. 7, 1966 [Feb. 8, 1965], No. 5177/66. Heading H1M. Capacitor I is shown with one end cap 8 sealed to the encased capacitor body and the other in position prior to sealing. The end caps are undersized in that side walls 11 do not form a sliding fit on the capacitor body, and sealing is effected by heating the end caps to above the melting point of the thermoplastic resin layers 7 forming the casing and forcing them on to the ends of the casing. The fused resin fills the end cap and bead 14 tightens the seal. At the same time the electrode extensions are deformed as at 3 into contact with the end cap. The layers 7 constituting the casing may be additional turns of the wound polyester, e.g. polyethylene terephthalate, or polyvinyl resin strips 6 forming the capacitor dielectric.
Patent GB-206077-A (GB)
Title: Improvements in feed mechanism for projection apparatus
IPC: G03B1/18
Filed: 1922-07-27
Abstract: 206,077. Lehwess, E. E. July 27, 1922. Reel and endless-web apparatus; endless-chain and like carriers, apparatus with; optical-projection apparatus, applications of.-In intermittent feed mechanism for optical projection apparatus comprising a spring casing 4 driven continuously so as to wind the spring within it, and a disc 5 which is engaged by a locking member 8 and intermittently released therefrom so that it may be rotated by the spring, the locking member 8 consists of a notched disc carrying feed claws 12 or a gripping segment for feeding the film &c., and co-operates with pins 6 on the disc 5, the disc 8 being locked when the pins 6 engage its surface and being driven by the spring and disc 5 when a pin 6 enters its notch 10. The spring casing 4 is rotated through gearings 13, 1, 2 by a motor 12a, the disc 8 being carried by a sleeve a<1> loosely mounted on a shaft a continuously driven by the gearing, and being operatively connected to the shaft a by a pin 9 on the shaft which engages a pin 11 on the disc 8. The disc 8 is thus normally driven by the shaft a, but, when a pin 6 engages the notch 10, is freely rotated by the spring at a greater speed than the shaft. The mechanism may be used in advertising or other apparatus to feed transparent or opaque films, or to feed postcards, small objects, &c. carried by chains or the like. The images may be projected on to the back of a transparent mirror, the projection lamp circuit being controlled by clockwork so that the mirror may function as such while the film &c. is in movement.
Patent GB-989079-A (GB)
Title: Improvements relating to the removal of metals from petroleum
Inventor: DEAN RONALD ALFRED
IPC: C10G17/02
Filed: 1962-02-15
Abstract: Volatile metalloporphysin contaminants are removed from petroleum oils containing a major proportion of material boiling above 300 DEG C. by contacting the oil with anhydrous hydrogen iodide at a temperature not exceeding 250 DEG  C. to break down the porphyrin structure, and removing the metal components of the metalloporphyrin from the oil, for example by filtration or centrifuging. Specification 887,945 is referred to.
Patent GB-194298-A (GB)
Title: Arrangement for multiplying the tension and converting the current of an electrical generator or transformer
IPC: H02M1/20
Filed: 1923-03-01
Abstract: 194,298. Soc. Drault et Raulot- Lapointe. March 3, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Commutator switching-arrangements.-In an arrangement for obtaining high-tension continuous current for alternating current, for supplying X- ray tubes and for other purposes, the secondary winding T of a transformer, or other source of high-tension alternating current, is connected to a pair of contacts D<1>, D<2> and to a point X between two condensers A<1>, A<2>. The other terminals of the condensers are connected to contacts D<3>, D<4>, which are alternately connected to the contacts D<1>, D<2> by conducting rods C<1>, C<2> on a shaft A rotated by a synchronous motor M. The condensers are charged in the same direction by successive half-waves of the alternating current, and discharged in series through the load R.
Patent GB-308063-A (GB)
Title: Improved guards or shields for rotating shafts
IPC: F16P1/04
Filed: 1928-02-25
Abstract: 308,063. Taylor (Brass Founders), Ltd., G., and Tate, J. R. Feb. 25, 1928. Guards.-Freely-revoluble tubular guards for shafting, as described in Specification 209,282, are made in segments embraced bv and interconnected with segmental resilient bands, in order to facilitate attachment to the shaft c. The metal, papier mÔchÚ, &c. guard a is formed in suitable lengths and of two segmental parts having at their ends, and, if desired, intermediately, internal semicircular collars b. Resilient steel &c. bands d, each subtending somewhat over 180‹ and arranged at intervals, have pegs e to enter holes f in the guard parts when the bands are sprung into position. Projections may alternatively be formed on the guard to engage holes in the bands, and the guard may be in more than two segmental parts.
Patent GB-414799-A (GB)
Title: An improved process for the manufacture of tanning extracts soluble when cold
IPC: C14C3/10
Filed: 1933-02-28
Abstract: 414,799. Making tanning -extracts. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Chemische Fabrik Stockhausen et Cie; Krefeld, Germany.) Feb. 28, 1933, No. 5990. [Class 76.] Tanning - extracts are prepared by treating crude aqueous extracts with small quantities, e.g. 0À5 to 1À5 per cent of the dry material, of alkali carbonate or other alkali while heating at ordinary pressure and then treating with small quantities of acids or acid salts under pressure whereby the insoluble "phlobaphenes" are converted into soluble tanning agents. Sulphurous acid, sodium bisulphite or bisulphate and acetic acid are mentioned as suitable acid substances. Caramel may be added to the extract to produce a yellow instead of reddish brown colour.
Patent GB-768475-A (GB)
Title: Voltage measuring instrument providing readings with an adjustable magnification range
IPC: G01R17/10
Filed: 1955-03-01
Abstract: 768,475. Thermionic valve voltmeters. INSTITUT DE RECHERCHES DE LA SIDERURGIE. March 1, 1955 [March 4, 1954], No. 6011/55. Class 37. A voltage measuring instrument providing readings with an adjustable magnification range, comprises a Wheatstone bridge having resistances 18, 19, a potentiometer 10 the slider 11 of which is connected with the grid 12 of a triode, and a large scale galvanometer 20 in series with a resistance 21 so as to act as a voltmeter. The known voltage whose variation is to be measured is supplied at points 6, 7, and the bridge is balanced on an exact reading with the slider 11. Any mains voltage variation will vary the bias voltage and anode current, and the unbalance will be accurately indicated on the galvanometer. A voltmeter 8 may be used to give approximate readings, and a rectifier 22 may be connected if the galvanometer is required to register in one direction only. The instrument may be used for different voltages if the resistance 10 is provided with tappings and a selector switch substituted for the slider 11. The instrument may also serve as a relay operating for maximum and minimum voltage between close limits.
Patent GB-548738-A (GB)
Title: Improvements connected with the control of a.c. shunt commutator motors
IPC: H02K27/16
Filed: 1941-05-12
Abstract: 548,738. Alternating current commutator motors. SCHWARZ, B. May 12, 1941, No. 6120. [Class 35] Speed controlling means for an A.C. shunt commutator motor comprise a variable voltage transformer, an auxiliary transformer of constant or variable ratio and means for bringing the auxiliary transformer into use to function in conjunction with the principal transformer for a predetermined motor speed or speeds or for a limited range of speeds which may be outside the speed range obtainable by the principal transformer. The arrangement reduces loss in the supply circuit and so improves regulation at the predetermined speeds. The motor has a stator winding St and a six brush commutator and winding C, fed in three open phases by induction regulator IR having series connected secondaries S1, S2 and parallel-connected primaries PI, P2. By closing switch SP the secondary SA of auxiliary transformer A may be connected in parallel with the induction regulator IR, when running at a low speed. Switch SS may disconnect the secondary of the auxiliary transformer when not in use. A third winding on the auxiliary transformer may remain permanently in circuit to inject either a phase compensating voltage or a constant speed regulating voltage or both. The transformer A may be tapped or continuously variable or combined with a small variable transformer or induction regulator of limited range. Interlocking switches ensure that the voltages of the two circuits are the same when they are paralleled. Alternatively the auxiliary transformer may be in series with the main induction regulator, Fig. 2 (not shown). With this arrangement the induction regulator output may be restricted to that required for normal running, while the auxiliary transformer supplies only the difference between this and the output required for the low speed. When not in use the auxiliary transformer may be employed with different connections to shift the centre of the main speed range away from synchronous speed or to supply power factor correction and may be arranged to permit reversal as described in Specification 546,699. The Provisional Specification states that the auxiliary transformer may replace the principal transformer at the predetermined speed.
Patent GB-1386781-A (GB)
Title: Electrodeposition of nickel
IPC: C25D3/16
Filed: 1971-03-05
Abstract: 1386781 Electrodeposition of nickel ALBRIGHT & WILSON LTD 1 March 1972 [5 March 1971] 6149/71 Heading C7B A coumarin-free aqueous electrolyte for nickel plating comprises (a) at least 30 gms per litre of a nickel-II salt; (b) 0.1 to 250 milimoles per litre of a mixture of water soluble acetylenic compounds including an α-alkynol and a condensation product of an α-alkynol with an alkylene oxide in a weight ratio of said α-alkynol to said condensation product of from 4:1 to 1 :4 and (c) from 0.1 to 45 gms per litre of a non-conjugated carboxylic acid in which the pKa is between 3.0 and 5.0. The solution may contain chloride, sulphate, sulphamate and/or borate. The α-alkynol may have the formula R 1  CHOHC#CR 2  where R 1 , R 2  are each hydrogen, or an alkyl, alkenyl or alkynyl group of 1 to 4 carbon atoms or such group having an amine or hydroxy substituent. Specific α-alkynols are listed; e.g. 2-butyn-1, 4 diol, 1-butyn-3-ol and propargyl alcohol. The condensation product may be a condensation product of an α-alkynol of the above mentioned general formula with ethylene oxide. Specified suitable carboxylic acids are formic, acetic, propionic, glycolic, tartaric, lactic, succinic and phenoxyacetic acids. Other suitable acids are listed in Specification 871276. The acids may be added as derivatives thereof, e.g. as alkali metal, NH4, Mg or Ni salts or as lactones, esters, acid chlorides or anhydrides. Specified operating conditions are a pH between 2.5 and 5.5, a temperature of 40-70 ‹C a current density of 2-100 amps/sq. ft. and agitation of the cathode or blowing of air through the electrolyte. The electrodeposited Ni may be mechanically polished or may be used as a base for electrodeposition of fully bright Ni using an acetylenic compound and sulpho-oxygen compound as additives. Cr may be electrodeposited on to the fully bright Ni.
Patent GB-148105-A (GB)
Title: Improvements in hand threaded loom shuttles
IPC: D03J5/24
Filed: 1920-03-02
Abstract: 148,105. Matthews, H. March 2, 1920. Shuttles are provided with a hand-threading device comprising a wire fitting having two parallel parts e' with their ends e fixed in the shuttle, elbow bends e<2>, and a loop c in the centre of the shuttle welded to a split pin d secured to the shuttle. The weft may be passed directly through a threading-slot, or two extra degrees of tension may be obtained by passing it one way or the other around a tension post h having a reduced case-hardened part i and provided with a screwed split shank fur securing it in the shuttle.
Patent GB-564147-A (GB)
Title: Hand-operated propelling gear for boats
IPC: B63H16/16
Filed: 1943-04-20
Abstract: 564,147. Hand propelled boats. BAILEY, G. B., and WRAGGE, S. J. April 20, 1943, No. 6311. [Class 114] Hand-operated propelling gear for boats comprises an endless rope or the like 4 passing round fore-and-aft pulleys 1, 5 mounted centrally of the boat, the aft pulley 5 being connected to an underwater propeller by gearing provided internally of the boat. The aft pulley and gearing may be disposed vertically or horizontally as shown, the gear-wheels 9, 10 being carried by a fixed cross-member 8 and enclosed by a casing 15, whilst the gear-wheels 16, 17 are enclosed by a housing 22.
Patent GB-567888-A (GB)
Title: Improvements in flexible containers for liquid
IPC: B64D37/06
Filed: 1943-04-20
Abstract: 567,888. Tanks. McCULLOCH, M. L. April 20, 1943, No. 6341. [Class 69 (i)] In a flexible container for fuel or other liquids comprising pieces of material impregnated or coated with material impervious to the liquid, the edges of the pieces being overlapped and secured together, such edges are sandwiched between strips of semi-flexible material considerably thicker than the material of the container, and the strips are clamped together by spaced rivets, bolts or the like, which pass through holes in the strips and the material. A container adapted to be carried on a lorry &c., shown in plan in Fig. 3, comprises strips of woven &c. material coated or impregnated with impervious material such as synthetic rubber, each strip being built up of pieces with their meeting edges 2, Fig. 6, overlapped and held by strips 5, of synthetic rubber &c., and bolts 6; adjacent strips are laid side-by-side with the joints formed by the edges 2 staggered and the meeting edges 4, Fig. 4, of the strips turned outwards and also secured by strips 5 and bolts 6, baffles 3, which may be apertured, being interposed if desired. Abutting ends of strips 5 may be connected by metal fish plates. The ends of the container are similarly attached by strips 5 and bolts, opposite sides of the container converging upwardly. The bottom of the container may be stiffened by transverse rods or tubes secured externally adjacent each joint. The ends may be stiffened by channelshaped members 9, Fig. 15, connected collapsably by links 10; in another form, the stiffening comprises tubes 12, Fig. 16, hinged to the lower edge of the container and attached to the upper edge by a loop 13 of rope &c., a wooden plug 14 closing the tube. One or more filler orifices 15, Fig. 3, are provided, a metal cylinder 16 being fixed therein by a strip 5 and bolts. The bolts 6 may be replaced by rivets, or by smooth-shanked bolts with annular recesses into which split spring washers are snapped, or by press-button fasteners. The container may be further strengthened as by a stressed outer envelope, with or without intermediate wire mesh &c. The baffles may be replaced by flexible triangular members attached to the bottom and adjacent side. Specifications 378,488, 516,159 and 532,802 are referred to.
Patent GB-910996-A (GB)
Title: Automatic bevel gear tooth generating machines
Inventor: ISHIOKA SHOZO
IPC: B23F23/12
Filed: 1959-02-24
Abstract: 910,996. Gear-cutting; gear-grinding. KABUSHIKI KAISHA HITACHI SEISAKUSHO. Feb. 24, 1959, No. 6361/59. Class 83 (3). A continuous-indexing bevel-gear cutting or grinding machine comprises means for moving a rotating cutter 27 in a defined path relative to a gear blank 1, gear means for rotating a supporting portion of the gear blank mounting and means for radially spacing the apex of the pitch cone 0<SP>1</SP> of the blank to either side of the centre O<SP>2</SP> of the pitch disc of an imaginary crown gear lying in a plane tangential to the pitch cone. The gear blank is mounted in a head 2 on a base 3 movable by a screw 43 along a table 4 rotated by worm gearing 5, 6, and gearing 8. The gearing 8 also rotates gears 9, 10, 12, 13, change gearing 14 and worm gearing 26, to rotate the blank 1. Two rams 29 carry wheels 27 to grind left and right flanks alternately. Each ram is carried for angular adjustment about a pivot 31 on a slide 32 adjustable laterally on a table 33 adjustable about a pivot by gearing 36, 37. The pinion blank is mounted on a head 2<SP>1</SP> and the gearing 14 has a pivoted slide bar 40 so that the drive may be changed from driving the gear 1 to driving the pinion 1<SP>1</SP>. For cutting the gear, the pitch cone apex O<SP>1</SP> is moved a distance " A " beyond the axis of rotation of the table 4. The off-setting results in crowned teeth on the gear. The heads 2, 2<SP>1</SP> are carried on arms 46, 47 pivoted at 48 so that, when cutting is complete, the gear and pinion can be swung into meshing engagement for testing.
Patent GB-144789-A (GB)
Title: Improvements in refractory brick-work for water tube boilers
IPC: F23M5/02
Filed: 1919-03-15
Abstract: 144,789. Greco, F. March 15, 1919. Casings.-The bricks in the casing of a boiler are held by V-shaped bars arranged to lock into corresponding half-dovetail grooves in the edges of the bricks. To mount the bricks 3, V-shaped angle-irons 8 with anchor plates 9 and bolts 10, Figs. 2 and 4, are arranged vertically on the side iron plates, and the bricks are held in half-dovetails with a small space 11 between. The inside of the angle-iron is filled with felt or asbestos 12.