baber/WOPTO huggingface dataset:
Patent GB-1482723-A (GB)
Title: Disc brake
IPC: F16D55/00
Filed: 1975-04-25
Abstract: 1482723 Disc brakes SOC ANON DBA 25 April 1975 [25 April 1974] 17299/75 Heading F2E The caliper surfaces 46, 48 on which the backing plates of pads 14, 16 slide are slotted at 56, 58 to permit radial withdrawal of the pads. Pad locating springs 50 are provided. The inter-engaging surfaces of the backing plates and caliper are generally V-shaped (Fig. 1, not shown). Actuator pistons 20 may be retracted into their cylinders to permit pad 14 to be moved from its normal rest position into alignment with the slots 56. The caliper may be sliding, as shown, or fixed.
Patent GB-847632-A (GB)
Title: Improved process for separation of normally solid polymers of i-olefins from solutions thereof
IPC: C08F6/12
Filed: 1957-05-31
Abstract: In a process of separating solid polymers of 1-olefins from hydrocarbon solutions thereof, by dispersing the solution into cooler water to precipitate the polymer and then removing the hydrocarbon by steam stripping in a steam stripping zone, an improvement comprises passing the dispersion to a quiescent zone where polymer and hydrocarbon float on the water, removing at least a major proportion of the water and passing the remaining ingredients to the steam stripping zone.  Specified olefins are ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 4-methyl-1-pentene, 4-methyl-1-hexene, 5-ethyl-1-hexene, 6-methyl-1-heptene acid, 4-ethyl-1-hexene. Specified hydrocarbons are propane, isobutane, pentane, isopentane, iso-octane, cyclohexane, and methylcyclohexane.  Apparatus for carrying out the process is described.  The polyolefins are preferably prepared by the low pressure process involving chromium oxide. Specifications 790,195, 804,641 and 835,301 are referred to.
Patent GB-624318-A (GB)
Title: Improvements in and relating to the manufacture of moulded rubber articles
IPC: C25D1/18
Filed: 1947-07-01
Abstract: 624,318. Electric endosmose. BINNS, W. July 1, 1947, No. 17362. [Class 41] A method of making moulded rubber articles comprises subjecting rubber latex in a mould to a potential difference between two electrodes so that a differential concentration of dispersed particles is caused thereby, and causing or permitting the treated latex to gel. The latex may be foamed latex, for example of the type described in Specification 587,112, [Group V]. The mould may have an internal conducting surface constituting the anode and one or more conductive members as cathodes may be disposed within the latex where they are eventually embedded as part of the finished article. The treatment may be effected in more than one stage so that a migration of particles is effected in one direction in one stage and in another direction in another stage. In an example of the manufacture of a doll, a metal mould in two halves contains latex foam and a wire shaped to reinforce the limbs of the doll is disposed within the mould with an insulated portion passing through an opening in the mould. A current of 1.5 amps for 10,000 milliseconds is supplied with the mould as anode, then follows a reverse current of 350 milliamps for about 4000 milliseconds. The foam is then gelled and vulcanized by being passed slowly through an air oven with the temperature rising gradually from 80‹ to 120‹ C. Specifications 326,210, 332,525, [both in Class 70], and 477,826, [Group V], also are referred to.
Patent GB-772646-A (GB)
Title: Di-hydrocarbon tin borates
IPC: C07F7/22
Filed: 1955-06-16
Abstract: Polyvinyl chloride and polyvinylidene chloride compositions with or without plasticizers are stabilized against heat and light by addition of a dihydrocarbon tin borate of formula (R2Sn)3-n(R1)2n(BO3)2 where R and R1 are alkyl, aryl or aralkyl groups (R1 being an alcohol or phenol residue) and n is 0, 1 or 2. Specified stabilizers include dibutyl tin borate and a compound of formula (C4H9)2Sn(C8H17)4 (BO3)2 prepared from dibutyl tin oxide, 2-ethyl hexanol and boric acid.  A composition comprising polyvinyl chloride, di-2-ethylhexyl-phthalate and dibutyl tin borate is described.ALSO:The invention comprises dihydrocarbontin borates of formula <FORM:0772646/IV(b)/1> wherein R-R1 are alkyl, aryl or aralkyl radicals and n is 0, 1 or 2.  They may be prepared by reacting a dihydrocarbontin oxide with boric acid or a partial ester of boric acid at a temperature between 80 DEG  and 140 DEG  C.  If desired, the oxide, boric acid and an alcohol or phenol may be reacted together.  The reagents should be substantially anhydrous. An inert organic solvent (benzene, toluene, xylene) may be used as reaction medium. In an example, dibutyl tin oxide is dried by refluxing with toluene, boric acid added and the mixture heated.  On distillation of the toluene dibutyl tin borate remains.  The preparation of a compound (C4H9)2Sn(C8H17)4 (BO3)2 from dibutyl tin oxide, 2-ethyl hexanol and boric acid is also described.ALSO:Dihydrocarbontin borates of formula:  (R2Sn)3-n (R1)2n (BO3)2 are used as rubber antioxidants and rubber accelerators.  In the formula R and R1 are alkyl, aryl or aralkyl groups (R1 being the residue of an alcohol or phenol) and n is O, 1, or 2. Specified compounds include dibutyltin borate and a compound of formula (C4H9)2Sn (C8H17)4 (BO3)2 derived from dibutyltin oxide, 2-ethylhexanol and boric acid.
Patent GB-785872-A (GB)
Title: Methods of making prescreened photographic sensitive materials
IPC: G03F5/00
Filed: 1956-06-06
Abstract: 785,872. Prescreened photographic material. KODAK, Ltd. June 6, 1956 [July 1, 1955], No. 17416/56. Drawings to Specification. Class 98(2) A silver halide emulsion layer is exposed through a ruled screen or a contact screen, developed, and then rehalogenized to produce re-formed silver halide areas of lower sensitivity than the original silver halide, and so provide a material with two different silver halides distributed therethrough in vignetted pattern and which can be processed directly to a half-tone image after exposure to a continuous tone image. High contrast material of gamma greater than two, orthochromatic or panchromatic material may be so treated. The greater the difference in sensitivity between the two silver halides the greater the density scale which the material can reproduce, but even if the rehalogenized silver has zero sensitivity the material can still be used for some purposes. Drawings, not shown, illustrate continuous production of the material by exposure while in contact with a rotating drum, the surface of which is transparent and includes a vignetted half-tone pattern as of a contact screen, and then passage through developing, washing and rehalogenizing baths. Specifications 694,848 and 699,659 are referred to.
Patent GB-1255341-A (GB)
Title: High voltage particle accelerators
IPC: H05H5/02
Filed: 1969-04-03
Abstract: 1,255,341. Electron beam apparatus. NUCLEAR-CHICAGO CORP. 3 April, 1969 [5 April, 1968], No. 17449/69. Heading H1D. A high voltage accelerator apparatus comprises a source of charge particles, a plurality of accelerating electrodes each having an external connection in the form of a conductive disc, each disc being connected to a respective conductor of a graded coaxial cable supplying progressively increasing voltages (with respect to the source) to the accelerating electrodes. As shown, a filament 120 supplied from a low voltage transformer 75 forms an electron source whilst the accelerating electrodes 110 ... 115 are supplied with voltages ranging from 0-300 kV from a voltage doubling rectifying supply which forms the subject of Specification 1,255,342 (Division H2). Each disc 110 ... 115 is perforated to accommodate the coaxial cable 300. A shield 117 may be provided. A gas-tight shield may be mounted on base-plate 110 and filled with an insulating gas. Alternatively; the discs 110. 115 may be arranged to communicate with the internal vacuum of the accelerator. The Coaxial cable construction is described in Specification 1,255,342 (Division H1).
Patent GB-273740-A (GB)
Title: Improvements in or relating to sparking plugs
IPC: H01T13/16
Filed: 1927-07-01
Abstract: 273,740. Adam, E. P., and MÚtailler, R. L. July 2, 1926, [Convention date]. Sparking-plugs, for use with an adapter c formed with a bridge piece f, have the inner end d of the casing shaped conically for the purpose of bringing the electrode g as near as possible to the bridge f.
Patent GB-1036508-A (GB)
Title: Automatic hydraulic engine timing device
Inventor: KRANE STANLEY JOHN
IPC: F02D1/18
Filed: 1965-04-26
Abstract: 1,036,508. Reciprocating pumps. CATERPILLAR TRACTOR CO. April 26, 1965, No. 17476/65. Heading F1A. [Also in Divisions F2 and G3] A coupling for effecting relative rotation between a fuel injection pump cam-shaft 11 and a drive shaft 10, for automatically adjusting injection timing in accordance with engine speed, comprises an axially slidable member 20 engaging shaft 10 through helical splines 22 and shaft 11 through straight splines 21, oil under pressure being supplied to a chamber 33 to move member 20 to the right against springs 30 and 42 in dependence on the setting of a valve 27 controlling communication between chamber 33 and the casing via passages 36, 37 and actuated by centrifugal weights 40. Damping of the movement of member 20 is provided by oil trapped between splines 22 and flange 28. The quantity of oil supplied to chamber 33 is limited by a restriction 44, and the intermittent communication between passages 24 and 25 during rotation.
Patent GB-129189-A (GB)
Title: Improvements in or relating to Cotton Gins.
Inventor: TOOLSIDAS NARANJEE
IPC: D01B1/06
Filed: 1918-10-26
Abstract: 129,189. Toolsidas, N. Oct. 26, 1918. Gins.-In Platt's double-roller gins, the leather rollers x, y are driven from the main-shaft a by a train of gearing, the axes of the toothed wheels being coupled as shown by linkwork comprising a lever o, whereby the gearing mav be adjusted to the setting of the rollers, by setting the wheel d to the wheel e, the other wheels remaining in gear.
Patent GB-477161-A (GB)
Title: Improvements relating to wire drawing machinery
IPC: B21C1/12
Filed: 1936-06-24
Abstract: 477,161. Drawing wire. RICHARDS, S. H., and LLOYD, H. J. June 24, 1936, No. 17577. [Class 83 (iv)] In wire - drawing machinery of the non - slip type, wherein the wire passes upwardly from each drawing drum and over a guide or waffle plate freely rotatable about the same axis as the drum, movement of the waffle plate in either direction, indicating that an excess or deficiency of wire is being wound on the drum, is utilized to operate means controlling the speed of the drum, whereby the amount of wire wound thereon is kept substantially constant. Wire passes upwardly from the drum 1, the upper part of which comprises spaced rods 4, over a pulley 14 on a disc or waffle plate 10, and thence to the next die. If the amount of wire on the drum remains constant the waffle plate 10 does not revolve, but if an excess or deficiency of wire is wound on the drum, the plate 10 revolves in one direction or the other and, through gearing 15, 17, 18, rotates a disc 22 carrying adjustable spring-pressed pawls 23 which strike a switch 26 to control the speed of the drum. The switch may act through a relay to control the resistance in the field circuit of the electric motor 7. Alternatively, the waffle plate may actuate a rheostat, or may control the speed in steps until the plate reverses, as by means of a drum type controller. A knurled handle 30 enables the drive to the disc 22 to be disconnected.
Patent GB-847787-A (GB)
Title: Process of preparing polyethylene and co-polymers of ethylene
IPC: C08F10/02
Filed: 1959-05-22
Abstract: Polymers or copolymers of ethylene are prepared by the low pressure process using as catalyst a reaction product obtained by reducing titanium tetrahalide with dialkyl aluminium hydride and/or trialkyl aluminium, suspended in an inert liquid, the catalyst having been prepared by bringing the components together in an inert liquid in such a way that the atomic ratio in which the titanium and aluminium are present in the inert liquid is maintained constant.  It is preferred that the Al/Ti ratio during preparation is maintained at from 0,5 to 1 to 1:1 and during polymerisation at from 1:1 to 2:1 or during preparation at 1:1 to 2:1 and during polymerisation at 0,5 to 1 to 1:1.  Specified copolymers are those with propylene, butylene-butadiene and styrene.  Specified inert liquids are hexane, heptane, cyclohexane, gasoline, kerosine, heptene, toluene, chlorobenzene, mineral oil fractions and their mixtures.ALSO:A catalyst for the polymerization of ethylene comprises a reaction product obtained by reducing titanium tetrahalide with dialkyl aluminium hydride and/or trialkyl aluminium suspended in an inert liquid, the catalyst having been prepared by bringing the components together in an inert liquid in such a way that the atomic ratio in which the titanium and aluminium are present in the inert liquid is maintained constant.  It is preferred that the Al/Ti ratio is maintained at from 0.5:1 to 1:1 or from 1:1 to 2:1. Specified inert liquids are hexane, heptane, cyclohexane, gasoline, kerosine, benzene, toluene, chlorobenzene, mineral oil fractions and their mixtures.
Patent GB-562041-A (GB)
Title: Improvements in or relating to starters for three-phase induction motors
IPC: H02P1/32
Filed: 1942-12-11
Abstract: 562,041. Control of D.C. motors. GWYNNES PUMPS, Ltd., and WAUCHOPE, G. A. Dec. 11, 1942, No. 17635. [Class 38 (iii)] Transition from y to # is effected by connecting resistors, reactors or capacitors 6 in parallel with the motor windings 5, Fig. 1, opening out to the # connection shown in Fig. 4, and then shorting the resistors &c. The arrangement can be used for motors driving centrifugal pumps or fans. Reference has been directed by the Comptroller to Specifications 173,480 and 307,231, [both in Class 38 (iii)].
Patent GB-860870-A (GB)
Title: Improvements in or relating to coupling devices for hose pipes
IPC: F16L27/08
Filed: 1957-06-04
Abstract: 860,870. Pipe couplings. ESCO ARMATURFABRIKK OG MEK. VERKSTED A.S. June 4, 1957 [June 11, 1956], No. 17687/57. Class 99(1). A swivel coupling comprises a sleeve 1 which has a part inserted into a sleeve 2 in which it is secured by a locking wire 6 contained in grooves 5, a further groove 7 being provided for a circular sealing ring 8, the sleeves having nut like parts 3, 4 and screw-threads for engaging pipes (not shown). The wire 6 may be inserted into the grooves 5 through a hole 20 in the sleeve 2. The screw-threaded ends are of different diameters to accommodate pipes of different dimensions. In a modification, the coupling has internal screw-threads of the same size and has two grooves for packing rings on opposite sides of the locking wire.
Patent GB-1306991-A (GB)
Title: Process for the recompression of cold vaporisation gas withdrawn  from a liquid natural gas storage vessel
IPC: F17C13/02
Filed: 1970-04-14
Abstract: 1306991 Cold liquefied gas storage MESSER GRIESHEIM GmbH 14 April 1970 [26 April 1969] 17755/70 Heading F4P Methane vapour resulting from inflow of heat into a liquid methane storage container 1 is withdrawn at 2, compressed at 3 and passed via an open valve 5 through a heat exchanger 18 where it is warmed to about -40‹ C. by indirect heat exchange with a portion of the so warmed methane after compression in a compressor 8 forming part of a methane liquefaction circuit after which the compressed methane is warmed to ambient temperature at 12 and fed to a gas supply line 17. During filling of container 1 with liquid methane drawn from a liquefier 6 through a duct (not shown) gas leaving compressor 3 is warmed in liquefier 6 (valve 5 being closed), compressed at 8, cooled at 12 and returned through a line 13 to the liquefier 6 which latter is connected to the supply line 17 by a conduit (not shown).
Patent GB-1091380-A (GB)
Title: Improvements in or relating to the cracking of hydrocarbons
IPC: F23C6/04
Filed: 1966-04-22
Abstract: 1,091,380. Burners. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. April 22, 1966 [May 5, 1965; Feb. 14, 1966], No. 17775/66. Heading F4T. In a burner arrangement for cracking and burning low molecular weight hydrocarbon fuels such as natural gas, propane and butane the burner includes a premixing chamber 1 into which opens a supply pipe for gaseous primary fuel and a pipe 3 for air or other combustion supporter, and a secondary fuel supply pipe 4 opens at a central hole 6 formed in a disc 5 disposed at the outlet of chamber 1, the primary mixture being ignited at the periphery of disc 5 to set up downstream a zone of recycled hot gases into which is introduced the secondary fuel from pipe 4. In a modification the secondary pipe is a branch pipe from the main fuel pipe.
Patent GB-358543-A (GB)
Title: Improvements in and relating to mercury vapour rectifiers
IPC: H02M7/15
Filed: 1930-06-10
Abstract: 358,543. Converting. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. June 10, 1930, No. 17790. Convention date, Aug. 28, 1929. [Class 38 (ii).] The potential for a controlling grid of a mercuryvapour rectifier is taken from insulated metallic parts charged by an arc which is situated within the rectifier but is independent of the main arc. A grid d controlling the main arc between the anode band the cathode c is charged through a switch h by grids g<1>, g<2> which are charged by the auxiliary arcs between the cathode and exciter anodes e<1>, e<2>. The potential may be varied by choking the auxiliary arcs, e.g. by the insertion of grids or sleeves between the cathode and the grids g<1>, g<2>. Limiting resistances i are used. The grid d may be negatively biased by connecting it through the switch h to the star point of the supply transformer and to the cathode through a resistance k. The Specification as open to inspection under Sect. 91 (3) (a) states also that the auxiliary arcs may be housed within a separate container, see Fig. 2 (cancelled) not shown. This subject-matter does not appear in the Specification as accepted.
Patent GB-184954-A (GB)
Title: Stropping device for safety-razor blades
IPC: B24D15/08
Filed: 1921-06-30
Abstract: 184,954. Roth, O. June 30, 1921. Stropping-apparatus.-A safety-razor stropping-device comprises a sheet-mental casing formed of flat sides 1 connected by rods 4, 5, a bottom 2, and a cover 3. The bottom is secured in position by bending its ends around the rods 4, the bent parts being recessed at 7, 8. A portion 9 of the cover 3 is accommodated in the recess 8 and constitutes a hinge for the cover, while a spring member 10 serves to engage in the recess 7 and to retain the cover in its closed position. Gapped stropping-rollers 11 covered with leather are loosely mounted on axles 12 journaled in the sides 1. Intermeshing gears 13 on the axles 12 are rotated by a crank 14 and diive the rollers by means of pins 21 engaging in cavities 22 in the rollers, each of which is axially reciprocated by a pin 27 thereon being forced by a spring 25 against the bevelled end of a stud 26. A blade-holder 28 is mounted in the sides 1, and is rotated through 180‹ once in each rotation of the rollers 11 by means of a segmental rack 29 on the shaft 12 engaging with a. gear 30 on the blade-holder. The crank 14 is formed of two parts 15, 16 pivoted together and provided respectively with stops 20, 20<1>, 19. The part 16 has a handle 18. Normally, the stops 19, 20 are in mutual contact, but, on turning the handle counter-clockwise, the stops 19, 20<1> come into contact, thereby reducing the effective radius of the crank to zero and preventing rotation of the rollers in the wrong direction.
Patent GB-1447304-A (GB)
Title: Manufacturing process of granular crystalline polyolefin resin   composition for moulding
IPC: B29B7/14
Filed: 1974-04-24
Abstract: 1447304 Polyolefin compositions NISSAN KAGAKU KOGYO KK 24 April 1974 [25 April 1973] 17930/74 Heading C3P Granular crystalline polyolefin compositions for moulding are prepared by a process wherein crystalline polyolefin resin powder and/or grain is mixed with finely powdered inorganic filler in amount of 10 to 80 weight per cent of the composition and is heated from a temperature below the melting point of the resin under agitation sufficient to raise the temperature of the mixture by friction to a temperature within the range from the melting point of the resin to the decomposing point of the resin thereby yielding a weak coagulation of resin composition, until a coagulated block product begins to be produced and the product is cooled to a temperature below the melting point of the resin. The process may be effected in a tank provided with a rotating vane which may be operated initially at high speed, and then at lower speed when coagulation has begun. The resin may be a polypropylene or polyethylene. The filler may be talc, kaolin, clay, calcium carbonate, magnesium carbonate, barium sulphate, calcium sulphate, carbon black, titanium dioxide, silica, alumina, lead oxide or zinc oxide; and the compositions may also contain stabilizers, lubricants, modifying agents and colorants. Examples describe the preparation of compositions comprising polyethylene and (1 and 2) calcium carbonate and (3) talc; and polypropylene and (4) barium sulphate.
Patent GB-1011152-A (GB)
Title: Idle adjusting device for a carburettor
IPC: F02M3/08
Filed: 1963-05-07
Abstract: 1,011,152. Spray carburetters. BENDIX CORPORATION. May 7, 1963 [June 11, 1962], No. 18060/63. Heading FIB. The idling position of the piston 29 of a constant suction type carburetter is determined by an adjustable stop 46. The stop is carried by a screw-threaded sleeve 41 projecting through the wall of the body and engages the flange 33 of the piston. A member 35 is rotatable to completely block the air passage below the piston for cold starting. Specification 1,011,151 is referred to.
Patent GB-1030740-A (GB)
Title: Method for producing d(-) lactic acid
IPC: C02F1/04
Filed: 1963-05-07
Abstract: D(-)lactic acid is produced by a process which comprises culturing Sporolactobacillus inulinus ATCC 14897 in a culture medium containing as source of assimilable carbon one of the following compounds namely glucose, fructose, sucrose, inulin, mannose, maltose, trehalose, raffinose, mannitol, a -methyl glucoside, sorbitol, sorbose, xylose, ribose, L-arabinose, Darabinose, dextrin, dextran and glycerol, as source of assimilable nitrogen, leucine or valine, mineral salt or salts and, as growth factors, biotin and either pantothenic acid or a pantothenate, in particular wherein the source of assimilable carbon is glucose, sucrose, fructose or inulin, and especially wherein Paminobenzoic acid is present in the culture medium.  The examples illustrate the use of glucose, sucrose, Jerusalem artichoke as sources of assimilable carbon.
Patent GB-145747-A (GB)
Title: Improvements in suction sweepers
IPC: A47L5/10
Filed: 1920-07-02
Abstract: 145,747. Kirby, J. B. Oct. 2, 1916, [Convention date]. Vacuum cleaning-apparatus.-The fan chamber 1 is formed with an inlet 4 in its upper wall and with the fan-shaft 16 projecting through its lower wall 3. The fanshaft is operated through gearing 18, 21, from the shaft 13 upon which the supporting wheels 14 are mounted, the fan-shaft, gearing, and wheels being carried beneath and by the lower wall which is removably fitted to the fan chamber. The gearwheel 21 is loosely mounted on the shaft 13, and is connected to a ball-clutch secured upon the shaft. Overlapping the upper wall of the fan chamber and enclosing the inlet 4 is a collecting nozzle 2 formed with a hood 32 containing the brush 33, and an inlet 5 whose plane lies below the lower wall of the fan. The brush is rotatably mounted on the nozzle-inlet, and is operated through friction gears 37, 38, from a floor-engaging roller 35 journaled within a housing 36 formed in the lower portion of the nozzle. The rear lip of the nozzleinlet is formed with a ledge 40 which touches the bristles of the brush, and the fan is preferably made of cast iron and with thick blades. A glass cover 42 is provided on the nozzle.