baber/WOPTO huggingface dataset:
Patent GB-743836-A (GB)
Title: Divinyltetramethyldisiloxane and polymers prepared therefrom
IPC: C07F7/08
Filed: 1953-11-20
Abstract: The invention comprises polymers of divinyl tetramethyl disiloxane of the formula <FORM:0743836/IV(a)/1> and copolymers thereof with other CH2=C<-containing compounds.  The homopolymer is obtained by heating the monomer in the presence of a vinyl polymerization catalyst, yield cross-linked, infusible and insoluble products.  The copolymers are prepared in any known way, e.g. in bulk, in solution in benzene, toluene or xylene, or in aqueous emulsion.  Temperatures of 35 DEG to 120 DEG  C. are generally employed and catalysts are optional. Examples of copolymerisable compounds are dienes, including chloro- and cyano-butadiene, vinyl aromatic compounds, acrylic acid and its derivatives, ethylene and halogenated ethylenes, vinyl esters, methylene malonic esters, mono-and poly-allyl derivatives including tetra-allyl silane, and esters of unsaturated polycarboxylic acids. A long list of specific compounds is given.  Polymerization catalysts include oxygen, ozone, ozonides, hydrogen peroxide, organic and inorganic acids, boron fluoride, antimony pentachloride, organic and inorganic peroxides, hydroperoxides, and other per-compounds, and ultra-violet light.  Plasticizers and fillers may be incorporated before or after polymerization; suitable fillers are a -cellulose, mica dust, titanium dioxide, talc, zinc oxide, magnesium oxide, asbestos, quartz, wood flour and cellulose or wool fibres.  The copolymers are thermosetting materials which may be machined, and may be used as dielectrics, e.g. by impregnating an electrical element with the mixture of monomers and/or of partial polymers and polymerizing in situ, or they may be used in combination with other insulating materials, e.g. fabrics.  Solutions of the copolymerizable mixtures may also be cast into films which are then thermoset.  The examples describe the copolymerization of the disiloxane with methyl methacrylate, acrylonitrile and vinyl acetate respectively, using benzoyl peroxide as catalyst and an oxygen-free atmosphere.ALSO:The invention comprises divinyl tetramethyl disiloxane having the formula <FORM:0743836/IV(a)/1> and the preparation thereof by hydrolysing vinyl dimethyl ethoxy silane.  In the examples, the latter compound is prepared by reacting methyl magnesium bromide with vinyl triethoxy silane, and is refluxed with hydrochloric acid in acetone to give the above disiloxane.
Patent GB-153911-A (GB)
Title: Improvements in or relating to coating apparatus
IPC: A43D25/18
Filed: 1920-11-16
Abstract: 153,911. United Shoe Machinery Corporation, (Assignees of Cosgrove, J. W., and Julian, G. J.). Nov, 17, 1919, [Convention date]. Coating-machines.-In apparatus for cement. ing or otherwise coating material having inclined edges, for example skived soles for shoes, either the coating-roller 10 or the pressure roller co-acting therewith is formed of a number of independently-yielding sections or disks 23 which have laterally-inclined peripheries, whereby the inclined edges of the work S are adequately supported. Guides 30 on the work-feeding table keep the work central with respect to the rollers. The pressure roller is cleaned by a pad 32 lodged in a recess in the table and adapted to be charged with oil through an aperture 40 and to be adjusted by screws 36. Specification 1649/02, [Class 17, Boots &c.], is referred to.
Patent GB-1405973-A (GB)
Title: Compositions for the protection of materials which are in the  form of fine grains
IPC: C09K17/18
Filed: 1973-07-06
Abstract: 1405973 Chlorinated polyisobutylene dispersions RHONE-PROGIL 6 July 1973 [7 July 1972] 32345/73 Heading C3P Aqueous dispersions of solutions of chlorinated polyisobutylene having a chlorine content of 40 to 70 weight per cent may be prepared by chlorinating a polyisobutylene in a solvent inert to chlorination, the chlorination being initiated by irradiation or free radicals, optionally exchanging the solvent for another, e.g. by evaporating off the chlorination solvent and redissolving the recovered chlorinated polyisobutylene or by adding the other solvent before expelling the chlorination solvent, and subsequently emulsifying the solution of chlorinated polyisobutylene in an aqueous medium. The compositions may also contain thermoplastic resin or elastomer latices, plasticizers, protective colloids, emulsifiers and stabilizers; and may be used to stabilize soil against erosion, and to protect other particulate materials. Examples describe (1) the chlorination of polyisobutylene in carbon tetrachloride and conversion of the product to a solution in hydrocarbon solvents; (2) emulsification of the resulting solution in water together with chlorinated paraffins, polyvinyl acetate dispersion, epoxy stabilizer, protective colloid, emulsifier and water; and the use of the resulting dispersion to stabilize (3) moving dunes planted with marram grass and (4) powdered sulphur in storage.
Patent GB-1481966-A (GB)
Title: Cyclohexane tetrol esters and their preparation
IPC: C07D295/096
Filed: 1974-07-22
Abstract: 1481966 Cyclohexanetetrol esters and their preparation E R SQUIBB & SONS Inc 22 July 1974 [30 July 1973] 32382/74 Heading C2C Novel compounds of the formula or physiologically acceptable addition salts thereof, wherein Y is a radical of the formula -C n H 2n -NR<SP>5</SP>R<SP>6</SP> or of the formula in which n is 1-6, m is 0 or 1 and R<SP>5</SP> and R<SP>6</SP>, which may be the same or different, are hydrogen, alkyl, aralkyl or dialkylaminoalkyl, or R<SP>5</SP> and R<SP>6</SP> together with the nitrogen atom to which they are attached are pyrrolidino, piperidino or N<SP>1</SP>-alkyl piperazino, R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP>, which may be the same or different, are alkanoyl, haloalkanoyl, 2-, 3- or 4-pyridylcarbonyl, alkenoyl, aroyl, or alkoxycarbonyl of the formula -COR where R is alkyl or an aminoalkanoyl radical of the formula -CO-C p H 2p -NR<SP>5</SP>R<SP>6</SP> where p is 0.3, R<SP>7</SP> and R<SP>8</SP>, which may be the same or different, are hydrogen or alkyl, or R<SP>7</SP> and R<SP>8</SP> taken together with the carbon atoms bearing substituents 0R<SP>1</SP> and OR<SP>3</SP> form a cycloalkyl ring, and R<SP>9</SP> is hydrogen or a C 1-6  alkyl radical, may be obtained (a) by esterifying a tetrol of the formula in the presence of a strong acid the anion of which does not open an epoxide ring, or (b) by treating a substituted cyclohexadiene of the formula with an acid, the anion of which does not open an epoxide ring, treating the resulting salt with at least 2 equivalents of a peracid, and treating the resulting compound with an acid anhydride in the presence of a strong acid, the anion of which does not open an epoxide ring. The diene starting material may be prepared by the Birch reduction of the corresponding aromatic compound and subsequently converted to the tetrol derivative by reaction with H 2 O 2  and formic acid. The products possess blood pressure lowering properties and may be formulated in a conventional manner.
Patent GB-1056392-A (GB)
Title: Process for concealing the communication content of pulse-coded clear-language signals
IPC: H04L9/18
Filed: 1965-07-29
Abstract: 1,056,392. Data transmission. PATELHOLD PATENTVERWERTUNGS- & ELEKTRO-HOLDING A.G. July 29, 1965 [July 31. 1964], No. 32456/65. Heading H4P. Digital data is ciphered by algebraic addition of groups of data pulses with equal length groups of cipher pulses. Any carry digit resulting from addition of the highest digits is suppressed at the transmitter. At the receiver the reverse process takes place, the carry digit being reinstated if the result would otherwise be negative. Preferably the ciphered data is converted to analogue form for transmission.
Patent GB-188232-A (GB)
Title: Improvements in winding machines for yarn, thread, twine, wire and the like
IPC: B65H59/04
Filed: 1921-12-06
Abstract: 188,232. Baines, E. N., Schmidt, J. W., and Osborne, F. Dec. 6, 1921. Creel arrangements.-Relates to creel and tension arrangements in a winding machine. The bobbin A, Fig. 1, from which the material is being unwound is supported on a plate a<1> fixed to a vertical spindle a.. the plate a<1> being provided with a number of rubber or like plugs a<2>. The spindle a rotates in a sleeve b which is capable of sliding vertically in a bracket c, which bracket is shaped to provide, a brake flange c<1> for cooperation with the plugs a<2>. The yarn passes from the bobbin A over guide-rods f, f<1>, and under a roller d<4> at the end of a brake lever d, which is pivoted at d<1> and supported by the tension of the yarn. The sleeve b is supported on a stud d<2> carried by the lever d, and during unwinding is held so that the plugs a<2> are clear of the flange c<1>. A second stud d<3> limits the downward movement of the lever d. Slidably mounted in bearings g<1>, g<2> on the bracket c is a rod g, provided with a shaped brake-shoe g<3> making contact with the plate a<1>, and with a spring g<4> fitted between an adjustable stop-collar g<5> and a slidable collar g<6>. A bell-crank lever h, Fig. 2, fulcrumed on a vertical stud h<1> is also carried by the bracket c. On commencing winding the lever d is lifted by the passing yarn and the stud d<2> lifts the sleeve b so that the friction-plugs a' are raised clear of the flange c<1>. With increased tension in the yarn when proper winding has commenced, the footstep b is raised slightly further thus making contact between the plate a<1> and the brake-shoe g<3>, whereby the desired tension is obtained. If the yarn becomes slack, the lever d drops, and the plugs a' contact with the flange c<1>, thus checking the rotation of the bobbin A. As the diameter of the bobbin decreases, the arm h' of the lever h moves towards the bearing g<1> thereby lessening the tension of the spring g<4> and compensating for the increased speed of rotation as the bobbin empties. In a modification the braking-surface c<1> is arranged to be moved by the lever d, the sleeve b and plate a<1> being incapable of vertical movement.
Patent GB-1176955-A (GB)
Title: Improvements in or relating to Low Pressure Mercury Vapour Fluorescent Electric Discharge Lamps and their Manufacture
Inventor: WILLIAMS CHARLES EDINGTON
IPC: H01J61/72
Filed: 1967-07-17
Abstract: 1,176,955. Luminescent materials. GENERAL ELECTRIC & ENGLISH ELECTRIC COMPANIES Ltd. 17 July, 1968 [17 July, 1967], No. 32690/67. Heading C4S. [Also in Division H1] In a L.P.M.V. fluorescent discharge lamp containing a rare starting gas at a pressure of a few mm. Hg, and designed in normal operation to develop a minimum wall temperature exceeding 55‹ C., the coating on the internal surface of the envelope includes dispersed in association with the fluorescent material, one or more of the metals Cu, Ag, Au, Zn, Al, Tl, Sn, Pb, Bi, Fe, Co, Ni, in the form of a finely divided powder and in a total amount exceeding 0À3 gram atom per gram atom of the total mercury contained in the envelope. The metal forms an amalgam during processing or initial operation of the lamp to reduce the mercury vapour pressure in operation. The high wall temperature may result either from a power loading exceeding 0À4 watt per sq. inch of the internal surface of the envelope or from operation in conditions of high ambient temperature e.g. in an enclosed fitting. The powder may be uniformly dispersed in the fluorescent material or as a separate layer between the fluorescent material and the envelope. The preferred metals are Sn and Pb which do not oxidize during baking, in particle sizes of 10-50 Á. The coating operation is as described in Specification 1,176,954. A lamp is described having a filling of mercury and argon at a pressure of 2À5 mm. Hg and a coating of a halophosphate phosphor containing Sn powder in an amount of 1À69 gram atoms of Sn per gram atom of Hg. A higher power lamp has a filling of mercury and a mixture of 80% neon and 20% argon at a pressure of 2 mm. Hg and a coating of halophosphate phosphor containing 0À54 gram atom of powdered Sn per gram atom of Hg.
Patent GB-1122563-A (GB)
Title: Improvements in or relating to aircraft undercarriages
Inventor: RALPH HAROLD CYRIL ANTHONY
IPC: B64C25/50
Filed: 1964-08-11
Abstract: 1,122,563. Steering aircraft nosewheels. HAWKER SIDDELEY DYNAMICS Ltd. 9 Aug., 1965 [11 Aug., 1964], No. 32717/64. Heading B7H. A steerable aircraft nosewheel leg which is retractable about the axis 11 below the aircraft floor 14 comprises telescoping portions 13 and 15, the upper member 15 having an inner, rotary sleeve 17 which transmits steering motion to the nosewheels. The steering mechanism is housed within a casing 19 and comprises a cylinder 22 normally prevented from rotation by a splined connection 55 with a clutch member 52 upwardly urged by the pressure of fluid in a line 51 against the force of springs 53 whereby dog teeth 54 in the clutch member and on a stationary part of the housing interengage. A piston 25 operates within the cylinder 22 and comprises a spool valve 27 and fluid supply and return passages. The valve spool 27 is moved axially for actuation by rotary movement of levers 35 through a rod 33 which has a splined connection with a quill 32 which has a multistart threaded connection 38 with a stationary sleeve member 37, backlash in both directions being prevented by a spring 39. Movement of the spool 27 in either direction causes a flow of fluid to either space 29 or 28 whereby movement of the piston 25 is caused until a new position of neutrality is reached. The piston 25 has a skirt 44 in sliding contact with the casing 19, and a number of radial pins 47 extend between the skirt and the piston, each carrying a pair of rollers 48 which lie in helical slots in the cylinder 22 and a sleeve 45 which is keyed to the outer member 15 of the leg. The helical slots are of the opposite hand in the members 22 and 45, respectively, whereby, when the piston is moved axially it is caused to rotate and the sleeve member 45 is caused to rotate simultaneously at a faster rate. When the power fluid supply is cut off, pressure in the line 51 drops, whereby the dog teeth 54 are disengaged and the nosewheel is allowed to castor. Means may be provided for preventing rotation of the piston 22 whereby the rotary movement of sleeve 45 will be diminished. The helix angles may progressively change to give varying steering characteristics. Pressure relief valves 30, 31 connecting to reservoir are provided which prevent build up of excessive torque, e.g. should the nosewheel strike a runway kerb.
Patent GB-329670-A (GB)
IPC: E03C1/04
Abstract: 329,670. Electrolux, Ltd., and Hafner, J. C. Feb. 22, 1929. Multiple-way valves.-A multiple-way fluid valve control arrangement, more particularly for water softening apparatus of the regenerative type, comprises a single passage unitary conduit member 1, Figs. 1 and 2, having integrally-formed spaced branch connections for pipe lines, and' between each pair of branches an individuallyoperable valve with a seating formed integrally with the said conduit member or mounted on integral supports, these valves serving to control the passage of fluid through the conduit member from one connection of each pair to the other. The valves may be screw-down valves 12, as shown in Fig. 2, and may be double-acting, and one or more may have annularly-spaced baffle plugs 16. An instruction plate is arranged on pillars mounted in sockets 19 adjacent the unitary conduit member 1. The double-acting valves are actuated by a lever and quick-thread screw, the levers having an angular movement of substantially 90‹; certain of these levers may be mechanically coupled. A metering device may be combined with the conduit member. In the arrangement shown in Fig. 1 for water softening, the branch 2 leads in hard water, branch 3 is connected to the top of the softener, and branch 4 to drain. Branch 5 connects to the bottom of the softener and branch 6 to the soft-water outlet. The seats for the individually-operable valves are indicated at 7, 8, 9, 10 and 11.
Patent GB-772850-A (GB)
Title: Imitation mother of pearl and the manufacture thereof
IPC: C08F2/00
Filed: 1954-11-15
Abstract: Artificial mother of pearl is obtained by polymerizing an unsaturated polyester in the presence of 1.5 per cent of pearlescent material, the mixture being agitated, e.g. at 30 DEG  C., in a good heat conducting container, e.g. of aluminium, until just before gelling occurs, e.g. at 35 DEG  C., and the mixture then poured into a mould, e.g. of "Cellophane" (Registered Trade Mark), and slow agitation continued until polymerization is complete.  The slow agitation may be effected by progressively compressing the mould, or by the presence in the mixture of a volatile organic solvent, such as acetone, methyl-ethyl or methyl-isobutyl ketone, dibutyl phthalate or chlorinated or cyclic solvents.  The pearlescent material may be fish scales or aluminium shavings suspended in an organic liquid such as dibutyl phthalate.  Polymerization catalysts such as benzoyl or methyl-ethyl ketone peroxide may be included.  The pearlescent effect of plates of the products may be improved by painting the lower surfaces with white paint, or by welding to opaque plastic, e.g. to polyester resin containing talcum powder or titanium dioxide.  The artificial mother-of-pearl obtained may be used as knife-handles or buttons.ALSO:Artificial mother-of-pearl is obtained by polymerizing an unsaturated polyester in the presence of 1,5 per cent of pearlescent material, the mixture being agitated, e.g. at 30 DEG C., in a good heat conducting container (aluminium for instance) until just before gelling occurs, e.g. at 35 DEG C., and the mixture then being poured into a mould, such as a Cellophane (Registered Trade Mark) mould, and slow agitation continued until polymerization is complete.  The slow agitation may be effected by progressively compressing the mould, or by the presence in the mixture of a volatile organic solvent.  The pearlescent material may be fish scales or aluminium shavings suspended in an organic liquid such as dibutyl phthalate.  Polymerization catalysts such as benzoyl or methyl-ethyl ketone peroxide may be included.  The mother-of-pearl obtained may be used as knife-handles or buttons.
Patent GB-865592-A (GB)
Title: Improvements in or relating to methods of joining graphite to graphite and graphite to metal surfaces
Inventor: DAVIDSON HUGH WILSON
IPC: C04B37/02
Filed: 1956-10-29
Abstract: Graphite is coated with nickel by being subjected to an atmosphere of, or containing, nickel carbonyl and heated to cause deposition of nickel by thermal decomposition of the carbonyl. Specifically disclosed is the use of nickel carbonyl vapour entrained in hydrogen, part of the atmosphere being dissociated on to glass beads as a control.  Graphite surfaces coated in this way may be bonded together with or without the interposition of a washer of bonding material, or may be bonded to a metallic surface (see Group XXII).  Thus, graphite tubes for use in nuclear reactors may be joined together, and graphite end caps may be attached to graphite cans for the fuel elements of nuclear reactors.  Specifications 830,005 and 860,342 are referred to.
Patent GB-178068-A (GB)
Title: Improvements in spring hammers
IPC: B21J7/12
Filed: 1921-12-08
Abstract: 178,068. Aktiebolaget Klafrestr÷ms Bruk, (Assignees of Wallin, A. W .). April 2, 1921, [Convention date]. Power hammers.-In power hammers of the type in which a hammer-shaft. 1, Fig. 1, is operated by a spring-controlled presser-bar 4, a roller or like floating bearing 7, Fig. 2, is provided for the lower spring-case 8, and lugs 6, Fig. 1, are mounted on the hammer-shaft for laterally guiding the presser-bar. Power is delivered to the hammer by a crank and connecting-rod mechanism which rocks the bar 16 which is integral with the bar 2 pivoted on the hammer-shaft pivot 3.
Patent GB-406437-A (GB)
Title: Improvements relating to snap-action electric switches and the like
IPC: H01H5/04
Filed: 1932-11-23
Abstract: 406,437. Snap-action switches. BOARDMAN, J. T., 68, Georgiana Street, Farnworth, near Bolton, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Nov. 23, 1932, No. 33154. [Class 38 (v).] A snap-action switch comprises a fixed contact 1 and a movable spring-urged contact finger 4 which is carried on one end of a bell-crank lever 8 pivoted at 9. An operating lever 13 is fixed on a spindle 14 which also has fixed to it a lever 15 having at its end a pointed cam 17 and provided with a clearance slot 16 for the spindle 9. The end 10 of the lever 8 is U-shaped and between its limbs is a roller 19 loosely pivoted on a pin 21 carried by a shackle 22 and controlled by a spring 22<a> on a pin 23. When the lever 13 is moved anticlockwise the cam 17 forces the roller 19 to the right until the apex of the cam passes the line of centres of the spindle 9 and pin 21. The roller then passes down the other side of the cam 17 and moves the contact lever 8 rapidly in a clockwise direction to close the switch.
Patent GB-344762-A (GB)
Title: Improvements in or relating to the drying of young grass, fodder and the like
IPC: F26B17/10
Filed: 1929-11-01
Abstract: 344,762. Drying grass, peat, &c. TESTRUP, N., 47, Victoria Street, SODERLUND, O., Fairlawn, Clarence Road, Clapham, and TECHNO-CHEMICAL LABORATORIES, Ltd., 47, Victoria Street, both in London. Nov. 1, 1929, Nos. 33196/29, 1745/30, and 21578/30. [Class 34 (ii).] Freshly-cut grass, peat, &c. are fed in a thin stream by rollers c into a current of hot gases from a furnace a by which it is conveyed through a sinuous conduit b communicating with a suction fan d connected to a cyclone separator e. The temperature of the gases is from 800‹ to 1100‹ C. and their velocity from 10 to 25 metres per second. The conduit is formed of spaced corrugated plates enclosed in an insulated casing which may be heated by the exhaust gases from the cyclone separator. In a modification, the materials may be dried in two stages each having a separate supply of hot gases.