baber/WOPTO huggingface dataset:
Patent GB-879464-A (GB)
Title: Treatment of particulate or molecular materials
IPC: G03G9/12
Filed: 1957-12-04
Abstract: A suspension of a particulate material in an inert electrical insulating liquid, e.g. an organic solvent, is treated with another particulate substance which may also be in the form of a suspension bearing an electrostatic charge of opposite polarity to the suspended material whereby the charges are modified <PICT:0879464/III/1> and the suspension is precipitated.  The charge may be reduced, by control of the material added, so that a relatively large deposit is formed.  The process is applied to the precipitation of pigments to develop images on an electrostatic surface as described in Specification 835,044.  For example, particles 1, Fig. 1, suspended in an insulating liquid 2 are mixed with a suspension of oppositely charged larger particles 4 in another liquid compatible with liquid 2.  The proportions of oppositely charged materials may be such that on mixing the iso-electric point is reached and precipitation occurs, and is collected, e.g. on a filter 7.  By using different proportions the iso-electric point is not reached, and the suspension of mixed particles bearing a reduced charge may be used as a developer of electrostatic images, and is referred to as a "triggered" developer. Such a developer containing pigment particles partly reduced charge, will deposit relatively large number of particles to neutralize the charge on the electrostatic image.  A close control over the image is thus available.  The electric charge on the suspended particles may also be stimulated by an electric field.  Examples are given of (1) a mixture of synthetic resins, solvent, and carbon black, re duced to 0.5 micron in particle size, and the pigment suspension is then coated and precipitated by adding a suspension of "Monolite" (Registered Trade Mark) red pigment; a suspension of antimony sulphide and calcium fluoride in carbon tetrachloride is separated into distinct layers by adding beeswax particles thereto.  As coating and precipitating agents there may be used a powdered wax, gum or synthetic resin, or an oil.
Patent GB-890532-A (GB)
Title: Electrolyte or coolant collecting and supplying apparatus for machine tools
IPC: B24B55/02
Filed: 1959-11-06
Abstract: 890,532. Grinding. HAMMOND MACHINERY BUILDERS Inc. Nov. 6, 1959 [July 9, 1959], No. 37799/59. Class 60 [Also in Group XXXVI] Apparatus for the supply of coolant to a grinding machine comprises means for simultaneously impelling a liquid from a reservoir 1 to a point of use 72 and for gathering a dropletladen gas from the liquid and returning a portion thereof to the reservoir, a pump 8 between the reservoir and the point of use, a blower 36 above the pump and arranged to discharge the droplet-laden gas directly above the reservoir, and a motor 31 for simultaneously operating the pump and blower. The pump impeller 12 discharges coolant from the reservoir 1 via a pipe 71 to the outlet 72 adjacent the grinding wheel 61, whence it falls to a pan 68 and is returned by a pipe 73 to the tank. Simultaneously the blower draws air through a conduit 74 to an intake 30 to the blower chamber whence it is discharged to a chamber 38 containing baffles 41, 42. Droplets entrained with the airstream will be caused by the baffles to drip into a tank 2. Air, partly freed from droplets, is discharged at an outlet 39 after passing downwardly around a skirt 37, the sharp change in direction of flow from horizontal to downward causing deposition of most of the liquid for re-cycling. The motor, shaft, pump and blower may be reversible. The pump motor may be connected in parallel with the grinding wheel driving-motor and both motors operated from the same set of controls to effect simultaneous reversal of wheel and impellers without changing the character or direction of flow of the coolant, the impellers being designed when so required for operation in either direction. Specification 860,084 is referred to.
Patent GB-619791-A (GB)
Title: Improvements in means for striking typewriter type characters
IPC: B41J1/04
Filed: 1946-12-24
Abstract: 619,791. Making type. BAUER, A. Dec. 24, 1946, Nos. 37831, 37832 and 37833. Convention dates, Jan. 9, July 20, and July 20. [Class 100(iii)] [Also in Group XXII] A typewriter or calculating-machine type comprising a head part 7, Fig. 4, wider than a stem part 4 is made by means of a matrix formed in two parts 1, 2, Fig. 2, between which is a space part of which is filled up by at least one spacing-block of tempered steel (two blocks 8, 9 are shown) providing a space corresponding to the stem and a further space corresponding to the dimensions of the head, the latter being formed by applying pressure by means of a punch to the protruding end of a blank 3. The block 9 has a recess 13, Fig. 1, into which the material to form the head is forced, and the block 8 has recesses 10-12 to receive tenons 5-7 on the type. In a modification, Figs. 5-7 (not shown), the two parts of the matrix are semi-cylindrical, and the spacing block is rectangular and may be cut away to accommodate a projection on the blank. Fig. 8 shows a further modification in which the space between the parts 1, 2 of the matrix is trapezoidal, and a trapezoidal spacing-block 28 which may have recesses to receive tenons on the blank is used.
Patent GB-1523905-A (GB)
Title: Soil cultivating machines
IPC: A01B33/06
Filed: 1975-09-15
Abstract: 1523905 Rotary soil cultivating machines C VAN DER LELY NV 15 Sept 1975 [18 Sept 1974] 37896/75 Heading A1B Each driven rotor 6 comprises four radial arms 10 which carry tined soil working members 35 each freely rotatable about an axis c at a non-parallel angle to the rotational arms a of the rotor. The fastening portions 42 of the tines 35 are at 8 to the soil working portions 43, but are parallel to the axes c.
Patent GB-344799-A (GB)
Title: Improvements in or relating to telephone or like transmission systems
IPC: H04M3/40
Filed: 1929-12-10
Abstract: 344,799. Repeaters. AUTOMATIC TELEPHONE MANUFACTURING CO., Ltd., Strowger Works, and SMITH, J., 9, Merivale Street, Durning Road, both in Liverpool. Dec. 10, 1929, No. 37917. [Class 40 (iv).] The amplifiers of a two-way repeater may be connected in cascade to work in a single direction when the circuit is in use as a one-way trunk. For normal use the connections shown dotted are made and those shown strapped, with the exception of those to the balancing networks BN, BN1 are broken. Speech currents from L1 to L4 are amplified by AA and those from L4 to Ll by AA1. By throwing a switch the dotted connections are replaced by those shown strapped making the line a single-way circuit from L4 to L1. The currents now pass from L4 through AA1 and transformer T2 to AA whence they are transferred to L1 by T1. The balancing networks BN, BN1 may be retained in or removed from the circuit as required. A system in which T1, T2 are replaced by additional windings on the hybrid coils is also described. Two two-wire units may be used, each giving unidirectional transmission, to give a two-way four-wire transmission system with increased amplification.
Patent GB-1096417-A (GB)
Title: Method of making a tubular welding wire or welding rod having a core composed of powdered constituents
IPC: B23K35/40
Filed: 1965-09-06
Abstract: 1,096,417. Making welding wires; welding by fusion. ESAB Ltd. Sept. 6, 1965 [Sept. 7, 1964], No. 37974/65. Headings B3A and B3R. A tubular welding wire or rod, e.g. for manual or automatic consumable electrode welding, electro-slag welding, carbon arc or tungsten inert gas shielded arc welding, is formed by shaping a metal strip to a channel section, depositing a powdered composition containing an inorganic binder having a melting point in the anhydrous state below 550 C., closing the strip and forming a tube of a required size by rolling and/or drawing and heating to not more than 550 C. to fuse the binder. Subsequently the wire may be cut into lengths. The binder may be chromium trioxide, boric oxide or boric acid. If the filling is anhydrous the tube is completely closed. Otherwise a gap may be left to allow steam to escape during heating. If desired two or more constituents may be bonded with a potassium or sodium silicate binder and granulated prior to mixing with say chromium trioxide. A mild steel tube may contain 65% Cr, 32% Ni, 3% CrO 3  and be coated with a titania-based flux.
Patent GB-999207-A (GB)
Title: Improvements in or relating to foot-wear
IPC: A43B7/06
Filed: 1961-10-26
Abstract: 999,207. Footwear. VEREENIGDE NEDERLANDSCHE RUBBERFABRIEKEN N.V. Oct. 26, 1961 [Nov. 2, 1960], No. 38432/61. Heading A3B. Footwear has a sole 1 made of rubber, or thermosplastic material with grooves, slots or other recesses 2 and 4 in its inner side so shaped that the portions 11 of the sole between them support the foot or insole, with the thickness "x" of the various sole portions being substantially equal so that one and the same vulcanisation or cooling time is required for all the sole portions. Channels 3 interconnect the recesses 2 and 4 An insole 6 may have apertures 9 corresponding with those of the sole. The insole may have projections 12 to fix it to the sole 1. The sole may have a smooth or profiled tread 8.
Patent GB-1119045-A (GB)
Title: Improvements in or relating to acrylic copolymers
Inventor: MERIJAN ASHOT
IPC: C08F220/12
Filed: 1965-09-08
Abstract: Copolymers having a molecular weight of 50,000-1,000,000 and which are soluble in alcohols and aliphatic hydrocarbons are prepared by heating (1) 1 mole of an acrylic acid ester monomer or a mixture of such monomers or a monomer mixture containing from 5 to 99% by weight of such ester monomer and from 1 to 95% by weight of a non-heterocyclic monoethylenically unsaturated monomer with (2) 0.05 to 12 moles of an a -olefin monomer or fluoro- or chloro-fluoro derivative thereof, in solution in an organic solvent common to all the monomers, and in the presence of 0.025-0.3 mole of an organic peroxide catalyst per mole of the a -olefin or halo-olefin monomer, at a temperature from 80-200 DEG  C.  (It is believed that the (halo)-a -olefin monomer alkylates copolymer units as well as copolymerizing with the ester monomer.)  The acrylate monomer is preferably that of a C1-C18 alkanol or a C3-C6 alkoxyalkanol. Suitable non-heterocyclic monomers include vinyl esters, methacrylate esters, a -haloacrylate esters, a -ethylacrylic acid, acrylonitrile, methacrylonitrile, acrylamide, methacrylamide and N-alkyl or N-aryl acrylamides. The a -olefin monomer may have a molecular weight of from 28 (ethylene) to 2500 (for polybutenes) and may include mixtures obtained by cracking petroleum wax; several a -olefins are exemplified.  Suitable halo-olefins include dichlorovinylidene fluoride, chlorovinylidene fluoride, chlorotrifluoroethylene, tetrafluoroethylene and vinylidene fluoride.  Reaction may be effected in solvents such as alkanols, diols, diacetone alcohol, ethylene glycol monomethyl ether acetate and methylene chloride. Peroxide catalysts specified are t-butyl perbenzoate, dibenzoyl peroxide, benzoyl hydroperoxide, t-butyl hydroperoxide, mono-t-butyl ester of perphthalic acid, p-chlorobenzoyl peroxide, t-butyl peracetate, di-t-butyl peroxide and cumene peroxide.  The polymers are suitable for use in hair sprays, as dispersing agents in fuel oils or lubricating oils, and as fire-retardants.
Patent GB-1352908-A (GB)
Title: Transport systems incorporating linear motors
IPC: H02K41/025
Filed: 1971-08-17
Abstract: 1352908 Linear motors J GUIMBAL 17 Aug 1971 [26 Aug 1970] 38511/71 Heading H2A [Also in Division F2] A transportation system comprises fixed inductor elements 10 carried by a track and each consisting of a rectangular magnetic core 7 including spaced stacks of laminations 9 between which are located rectangular coils 8 connected to a three-phase supply, the inductors being embraced by a U-shaped armature 20 carried by a vehicle and having a U-shaped yoke 15 with U-shaped conductors 17 on its inner surface connected to further conductors 18 adjacent the ends of their limbs. As shown in Fig. 4, the conductors 17 are separated by pairs of magnetic laminations 16 and the ends of the conductors are welded to bars 18 extending longitudinally and externally of the yoke 15. The inductor is supported horizontally by moulded insulating resin 13 on a vertical aluminium plate 12 which bridges the ends of the arms of the armature. The inductor elements are energized sequentially by progression of the vehicle which carries a steel strip 1, Fig. 3, producing a change in flux in a core 2 carried by each inductor element and energized by a coil 3, the flux change inducing currents in coils 4 which fire triacs 5 connected in series with the inductor coils. Where it is desired to produce a variation in speed, the coils of the appropriate inductors are connected to the supply so as to produce a faster or slower travelling field. The armature may be connected to the vehicle through a resilient shock absorber and relative movement between the armature and vehicle used to control a track brake (see Division F2).
Patent GB-1412412-A (GB)
Title: Tensioning means for belts or chains
IPC: F16H7/08
Filed: 1971-08-17
Abstract: 1412412 Belt or chain terisioners ROVER CO Ltd 15 Nov 1972 [17 Aug 1971] 38586/71 Heading F2Q A belt or chain tensioning device comprises a slipper member 12 pivotally mounted on a pin 15 and urged into engagement with a belt or chain 10 by a snail cam 19 which is pivotally mounted on a pin 18 and urged in a clockwise direction by a helically wound leaf spring 21. The slipper member 12 is of increasing width towards the pivot pin 15.
Patent GB-1151411-A (GB)
Title: Improvements in or relating to Pneumatic Tyre Inflation Valve and Wheel Rim Assemblies
Inventor: EDWARDS REGINALD HAROLD
IPC: B60C29/02
Filed: 1965-09-10
Abstract: 1,151,411. Inflating wheel tyres. DUNLOP CO. Ltd. 22 Aug., 1966 [10 Sept.. 1965], No. 38673/65. Heading B7C. [Also in Division F2] An inflation valve 5 is bonded at 12 to a wheel rim 1, preferably with either solder or an epoxy resin.
Patent GB-1097969-A (GB)
Title: Motor vehicle wheel suspension
Inventor: TURNBULL JOHN BARTHOLOMEW
IPC: B60G11/12
Filed: 1965-09-11
Abstract: 1,097,969. Road vehicle spring suspension. FORD MOTOR CO. Ltd. Sept. 11, 1965, No. 38899/65. Heading B7D. In a rear suspension for a motor vehicle, an axle 1 is connected to longitudinal leaf springs 3 each connected to a chassis member 4 by a resilient bushing 5 and by a shackle 6 which is arranged such that compression of the forward portion 5a of the bushing 5 under load is avoided and the bushing 5 is therefore able to absorb shocks tending to displace the axle 1 rearwardly of the vehicle. Each shackle 6 extends substantially vertically between the rear end of the spring 3 and a bracket 7 depending from the chassis member 4.
Patent GB-339509-A (GB)
Title: A brake for spindles of braiding machines
IPC: D04C3/00
Filed: 1929-12-20
Abstract: 339,509. Larmuth, W. O., (Ostermann, W. & M., [Firm of]). Dec. 20, 1929. Braiding - machines.- Thread - tensioning means for a braiding - machine comprises two semicircular brake blocks g, g<1>, normally held inoperative by a spring h, but which are operated by a cam h and lever l when a weight q, supported by the thread, falls. The blocks g, g<1> engage the interior wall of a member n having notch t engaged by a projection u on the bobbin o.
Patent GB-1211014-A (GB)
Title: Fabric treating composition and treated fabric
IPC: D06M15/37
Filed: 1967-08-25
Abstract: 1,211,014. Fluorine-containing polymer compositions. MINNESOTA MINING & MFG. CO. 25 Aug., 1967 [29 Aug., 1966], No. 39193/67. Headings C3P and C3R. [Also in Division D1] An oil repellent fabric-treating composition for enhancing the stain-resistance of a washable fabric and aiding in the removal of stains when the fabric is washed in water comprises an admixture of (A) from 1 to 10 parts by weight of a fluorine-containing oleophobic polymer having affinity for hydrocarbon limited to not more than 25% by weight uptake from saturated cyclohexane vapours at 75‹ F. for 24 hours and containing a monovalent perfluorocarbon group of at least three carbon atoms, the fluorine atoms of the perfluorocarbon group constituting at least 20% by weight of the fluorine-containing polymer and (B) from 10 to 100 parts by weight of a water-insoluble, substantially fluorine free, thermoplastic, hydrophilic polar organic polymer having a contact angle with water of less than 80 degrees, the composition having a contact angle with water of less than 90 degrees. The polar organic polymer may be, e.g., polyethylene terephthalate or condensation products of polyethylene oxide, formaldehyde, and melamine. The perfluorocarbon group is one in which all the substituents are fluorine or a completely or highly fluorinated saturated organic group. The group is preferably aliphatic but may contain oxygen, nitrogen, sulphur or other atoms in the drain without altering the nature of the group. The term " polymer " includes adducts of two or more of the same or different monomeric units, e.g. dimers or trimers.
Patent GB-1447122-A (GB)
Title: Production of aromatics
IPC: B01J29/00
Filed: 1974-09-10
Abstract: 1447122 Aromatization MOBIL OIL CORP 10 Sept 1974 [14 Nov1973] 39427/74 Addition to 1442850 Heading C5E The process of Specification 1,442,850 is improved by contacting the feed with the second downstream catalyst in the presence of H 2 , preferably in a H 2 /hydrocarbon mole ratio of 1 : 5.
Patent GB-1446875-A (GB)
Title: Electrical switching devices and arc hcambers therefor
IPC: H01H9/16
Filed: 1973-08-14
Abstract: 1446875 Indicators SIEMENS AG 14 Aug 1973 [14 Aug 1972] 39531/73 Heading H1N An indicator 12, for indicating the state of an electrical switch and movable with the movable contacts of the switch, is mounted with a part extending into the space within an arc chamber 4 of the switch, and is biased by a spring towards one limit of its movement, the indicator comprising two attached portions 14, 15 which are, at least before completion of manufacture of the switch, adjustably movable in relation to one another to adjust the length of the indicator to set it. The two portions of the indicator are preferably attached to each other by respective screw threaded parts, and an hexagonal recess 20 is provided in one portion 15 so that the length of the indicator can be varied by turning that portion 15 with an hexagonal key. The whole indicator is so arranged that the switch cannot be operated by moving it. Recesses 19 form a labyrinth to impede the escape of arc induced gases from the arc chamber. The indicator is made to protrude from the arc chamber to indicate that the switch is open by movement of the movable contact bridge 7 acting via spring 8 and stirrup 9 on the portion 15 of the indicator within the arc chamber.
Patent GB-933449-A (GB)
Title: Nitraza diisocyanates
Inventor: VANNEMAN CLINTON ROSS
IPC: C07C265/04
Filed: 1960-11-17
Abstract: Polyurethanes useful as solid propellants are prepared by reacting nitrazo diisocyanates of the formula:-  <F\1> wherein A and A1 are alkylene radicals and Z is a nitroalkylene radical, with a polyalcohol, e.g. 5,5-dinitro-1,2-hexanediol, in the presence of a ferric acetylacetonate catalyst.ALSO:The invention comprises nitraza diisocyanates of the formula:-<FORM:0933449/IV(a)/1> wherein A and A1 are alkylene radicals and Z is a nitroalkylene radical.  The compounds are prepared by reacting a nitraza diacyl halide of the formula:- <FORM:0933449/IV(a)/2> (wherein X represents fluorine, chlorine, bromine or iodine) with an alkali or alkaline earth metal azide to form a nitraza diacyl azide of the formula:- <FORM:0933449/IV(a)/3> which is then heated under anhydrous conditions to effect rearrangement to the isocyanate.  Nitraza diacyl halides of the above formula are prepared by treating the corresponding nitraza dicarboxylic acids with a thionyl halide. Nitraza dicarboxylic acids of the formula: <FORM:0933449/IV(a)/4> are prepared by hydrolysis of the corresponding nitraza dinitriles.
Patent GB-963956-A (GB)
Title: Transparent laminated assemblies
IPC: B29C65/48
Filed: 1962-10-19
Abstract: 963,956. Laminates. PITTSBURGH PLATE GLASS CO. Oct. 19, 1962 [Oct. 23, 1961], No. 39613/62. Heading B5N. A laminated assembly comprises a pair of transparent sheets of a rigid material such as glass and a thermoplastic interlayer of flexible polyvinyl butyral therebetween which has a moisture content of less than 0.2% by weight of the interlayer. Preferably, the surfaces of the interlayer are embossed or roughened. The moisture content of the interlayer may be reduced by hanging the polyvinyl butyral sheets in a conditioning room maintained at 70‹ F. and 10% relative humidity for several weeks, or alternatively by exposing the sheets to a dry atmosphere maintained at a subatmospheric pressure at a temperature not exceeding 140‹ F. for about an hour. Two methods of laminating are described. In the first the sheet is then sandwiched between a pair of glass sheets, flexible rubber tubing is split lengthwise and applied around the entire periphery of the assembly and the assembly subjected to evacuation. Whilst maintaining the vacuum the assembly is then placed in an oven at a temperature of approximately 300‹ F. for 15 minutes. In the second method the assembly is placed in a plastic bag which is evacuated and then sealed by heat, and then the sealed bag is placed in an oven as above. The usual autoclave treatment has been eliminated. Other materials which may be laminated are the acrylates, organosilicons, polystyrene plastics, vinyl copolymers and cellulose esters. Specification 819,179 is referred to.
Patent GB-1356993-A (GB)
Title: Hydraulic press particularly for processing skins leather rubber  fabrics plastics and other sheet-like materials
IPC: B30B15/06
Filed: 1971-08-25
Abstract: 1356993 Press G TOMBONI 25 Aug 1971 39992/71 Heading B5F [Also in Division D1] A press for processing skins, leather, rubber, fabrics or plastics comprises a platen 23 attached to a movable cylinder 21 of an hydraulic piston cylinder unit, and brackets 24 connecting the edges of the platen extending beyond the cylinder to the cylinder. The piston may be in two parts 19, 20 as shown. Alternatively the gaskets 27 may be located in a sealing ring attached to the cylinder.
Patent GB-908958-A (GB)
Title: Improvements in or relating to esters of steroids
IPC: C07J5/00
Filed: 1960-11-21
Abstract: The invention comprises the nicotinic acid esters of testosterone, oestrone and oestradiol and their preparation by reacting the steroid with nicotinic acid or a functional derivative thereof.  Examples are given.
Patent GB-1309332-A (GB)
Title: Substituted pentenes
IPC: C07C69/533
Filed: 1970-01-06
Abstract: 1309332 Substituted pentenes J A FINDLAY 6 Jan 1970 [6 Jan 1969] 40011/72 Divided out of 1309331 Heading C2C Compounds of formula where X is a 1-hydroxypropyl or formyl group, i.e. 5-methyl-4-hepten-1-al and 7-methyl-6- nonen-3-ol are prepared by treating 3-methyl- 1-penten-3-ol with ethyl vinyl ether in the presence of a catalyst (phosphoric acid) to give α-ethoxyethyl ether of 3-methyl-1-penten-3-ol and heating the α-ethoxyethyl ether in the presence of a catalyst (phosphoric acid) to give an aldehyde and reacting with a Grignard reagent to give the hydroxyl compound. The 3- methyl-1-penten-3-ol is prepared from 2-butanone and sodium acetylide.