baber/WOPTO huggingface dataset:
Patent GB-484922-A (GB)
Title: Improvements in or relating to means for the production of coloured effects by lighting
IPC: F21V9/40
Filed: 1936-11-11
Abstract: 484,922. Colour screens for floodlights &c. STANLEY, C. J. Nov. 11, 1936, No. 30837. [Class 75 (iv)] [Also in Group XXIX] In floodlighting, spotlighting, coloured sign, and like apparatus in which changing colour effects are produced by passing a beam of light through one or more transparent or translucent screens which are displaceable automatically or at will to and from an inoperative position entirely outside the beam, the screens are constituted by coloured sheets of transparent or translucent solid material, such as glass or gelatine, and are operated in one or both directions by the action of a fluid under pressure. Gravity or spring means may be employed for effecting the return movement. In the form shown in Figs. 1 and 2, the screens 1 are held in frames 2 by means of clips or thin cross-wires 3, and are accommodated within a casing 4 having front and back walls 5 with upper openings 6. The upper end of each screen is connected by rigid members 9 to a pair of pistons 8 working in cylinders 7 which are supplied with compressed air by means of branch tubes 11 and flexible tubes 10. Upward movement of the screen is limited by the pistons 8 striking stops 12 at the upper ends of the cylinder 7, whilst short lengths of tube 14 on the frame 2 engage vertical guide wires 13. According to the Provisional Specification, the pistons may be fixed and the screens connected to movable cylinders, and the connection may include a cord and pulley or like motionmultiplying device. For controlling the movements of the screens, compressed air is supplied by a flexible tube 18, Figs. 4 and 6, to passages 19 with ports 16, one in each of the limbs of an E-shaped member 17 accommodated within a casing 15 which is open to the atmosphere. Each port 16 is associated with a member 20 which is spring pivoted at 21, 22 and formed with a port 23 connected to one of the tubes 10, the members 20 being moved by rods 24 into any of three positions in which the corresponding screen is moved to the operative position, held in the operative position, or moved to the inoperative position. The casing 15 may be held in the hand, and the rods 24 extended to constitute finger-operated push-buttons, stops 25, 26 being provided to limit the movement. Alternatively, the push-buttons maybeoperated automatically as by means of motor-driven cams, or the screens may be operated by means of an intermittently rotated distributing valve operated electrically, electromagnetically, or by clockwork.
Patent GB-1503629-A (GB)
Title: Floats for plastering and building use
IPC: E04F21/06
Filed: 1976-07-23
Abstract: 1503629 Plastering float ARTWEGER - INDUSTRIE - GmbH 23 July 1976 [25 July 1975] 30904/76 Heading E1S A plastering float of the kind consisting of a flat rectangular base plate 1 and a handle 2 with at least the base plate 1 being composed of an expanded plastics material with a closed cellular structure, wherein the edges of the base plate 3 and its upper face 10 all have a rough surface and a hardness similar to that of its interior. The edges of the base plate have five vertical grooves or are cross-hitched, and the upper surface has channels 8 which become wider and deeper as they approach the longitudinal edges to which they extend perpendicularly. Five grooves 9 may also be provided in the upper surface extending perpendicularly to the longitudinal edges. The shorter edges 4' are milled off to give the rectangular form and to reveal opened cells. The grooves retain water on the upper surface of the float preventing spraying and direct it towards the longitudinal edges.
Patent GB-871071-A (GB)
Title: Heat exchanger and method of making same
IPC: F28F1/12
Filed: 1957-10-03
Abstract: 871,071. Heat exchangers. FREYHOLDT, H. A. Oct. 3, 1957, No. 31045/57. Class 64(3) A heat exchanger comprises a stack of elements in which heat conducting elements 1 alternate with fluid passage wall-forming elements 2, all the elements of the assembly being sealed and bonded together to form an integral one-piece monolithic structure having continuous walls separating the heat exchanging fluids from one another and heat conducting elements extending through the walls and into contact with each fluid. The heat conducting elements 1 preferably comprise aluminium wires. The wall forming elements 2 may e.g. comprise asbestos rope, rubber, brazing material, or wires coated with a synthetic plastic material, bonding being effected by a suitable heat treatment if necessary. In the form shown a number of spaced walls are formed defining therebetween passages 5, 6 for one fluid alternating with passages 4 for another fluid, heat being conducted from one fluid to the other through the wires 1. A method of making the heat exchanger is described.
Patent GB-435653-A (GB)
Title: Improvements in coal-cutting machines
IPC: E21C35/04
Filed: 1934-10-30
Abstract: 435,653. Machinery guards. HOPKINSON, A., Delta Works, Audenshaw, Lancashire. Oct. 30, 1934, No. 31100. [Class 80 (iv)] A guard for a coal-cutter comprises bars 10 pivoted to the links 8 of a belt supported by a curved guide bar 2. At the end of the belt are slotted plates 7 adapted to take over headed pins 6, and formed with hooks 7<b>. The lines XY, XZ show the directions of the cutter chain 12 in its extreme positions, corresponding to which are positions of the guard belt when the end C is hooked on bracket 4, and on the end A of the bar 2, respectively. Each bar 10 is pivoted as shown in Fig. 1 so that it may be turned up into, and rest in, the position shown by dotted lines.
Patent GB-174464-A (GB)
Title: Improvements in or relating to combination brushes and scoops for household and likeuse
IPC: A47L13/52
Filed: 1920-11-03
Abstract: 174,464. Langford, P. H. Nov. 3, 1920. Shovels and scoops.-A scoop adapted to be secured to the back of a brush is formed from a sheet metal blank of which the sides a are turned up at right angles for attachment to the sides of the brush, a portion being also turned up to form the back of the scoop. The edges of the sides a are inclined to the base c.
Patent GB-189125-A (GB)
Title: Improvements in electron discharge devices and methods of operating same
IPC: H01J21/18
Filed: 1922-11-14
Abstract: 189,125. British Thomson - Houston Co., Ltd., (Assignees of Hull, A. W.). Nov. 12, 1921, [Convention date]. Vacuum apparatus, arrangements of; frequency, changing.-The cathode of a two electrode discharge device for use as an amplifier, rectifier, or as a generator of alternating current or high frequency oscillations, is adapted to pass a current of such strength that the strength of the magnetic field produced thereby is sufficient to control the passage of electrons between the cathode and anode. In the amplifier shown in Fig. 3, the cathode 8 is heated by current from a battery 18 on which alternating current is superposed by means of a transformer 19. The anode 14 is connected through a winding of the output transformer 23 and a source of continuous current 22 with the cathcde. During the interval when the magnetic field is a maximum, no current passes in the output circuit. During the lother intervals uni-directional flat-topped impulses pass through the output circuit. In a modification the cathode is heated by alternating current alone, and the frequency of the current produced is double that of the supply current. In the rectifying system shown in Fig. 4, the anodes A, A<1> of two valves 25, 26 are connected with the ends of the secondary winding of a supply transformer 27, the neutral point of the winding being connected through the load 29 with the cathodes C, C<1>. Current is supplied to the cathodes through two transformers 30, 31, and is interrupted alternately in each cathode by a rotating switch 33 driven by a motor 34 in synchronism with the supply current. During one half cycle the current through the cathode C<1> of one valve 26 is of such strength that the magnetic field stops the electron flow between the cathode C<1> and anode A<1>; during the other half cycle no current passes through the cathode but the temperature cf the cathode remains high enough to enable a current to pass through the valve. This arrangement may be used for producing the load by a source of unidirectional current.
Patent GB-629286-A (GB)
Title: Improvements in electro-magnetic relays
IPC: H01H50/16
Filed: 1945-11-20
Abstract: 629,286. Electromagnetic relays. TELEFONAKTIEBOLAGET L. M. ERICSSON. Nov. 20, 1945, No. 31253. Convention date, Nov. 22, 1944. [Class 38(v)] In a telephone relay, the armature 11 and flat core 13 are arranged in'perpendicular planes and the edges of the core are bent as at 15, 16, 17 and 18 to form pole pieces. The core may, as shown, be made of two stamped soft iron parts welded together and the armature may pivot about an edge 19. Alternatively projection on the armature may engage holes in the pole pieces to provide a joint.
Patent GB-1164394-A (GB)
Title: Improvements in Quick-Change Chucks
Inventor: BILZ OTTO
IPC: B23B31/02
Filed: 1967-07-07
Abstract: 1,164,394. Chucks. O. BILZ. 7 July, 1967 [20 July, 1966], No. 31307/67. Heading B3B. A chuck has a toolholder socket 2 mounted in a housing 1 by means of a bushing member 6 and a self-aligning bearing 4, drive from the housing 1 being transmitted to the toolholder by a driving member 3 which makes toothed engagement both with the toolholder and the housing and is axially adjustable by means of a screw member 7. The member 7 has a spherical seating in the housing at 8, 10 and is spring loaded at 9. The teeth 11 of the member 3 are arcuately shaped to allow the toolholder to adopt its required position.
Patent GB-1188863-A (GB)
Title: Improvements in or relating to Motor Vehicle Differential Gearboxes.
IPC: F16H57/02
Filed: 1968-07-01
Abstract: 1,188,863. Differential gears; casings; lubricating. HERWAYTHORN S.A. 1 July, 1968 [25 July, 1967], No. 31398/68. Heading F2D. In a motor vehicle differential gear arrangement, wherein a transmission shaft 3 carrying a differential cage driving pinion 6 is mounted in bearings 9, 10 respectively adjacent and remote from the pinion 6, adequate lubrication of these bearings is ensured by providing one side of the differential gear housing with two arcuate channels 12, 13 which open independently in the housing interior, are separated by a common horizontal partition 14, and communicate with a hollowed-out portion 11 of the housing situated between the bearings. The partition 14 has symmetrical lips 15, (16) where the channels open into the housing interior, the arrangement being such that whichever elements 12, 13 is uppermost in operation, oil is projected into the upper of the channels and returns through the lower channel, the cross-section of the channel being reduced in the vicinity of the bearings so as to provide a constriction to reliably ensure bearing lubrication. An internal partition within the hollowed out portion 11  causes the oil to move more towards the remote bearing 10. The arrangement is particularly suitable for hypoid drives, the lubrication of the bearings being ensured with the shaft 3 either above or below the differential cage axis. The oil may be projected by a rotating part of the differential, a part driven thereby, or, as shown, the differential cage crown-wheel rim 5.
Patent GB-463932-A (GB)
Title: Improvements in the manufacture and production of agents suitable for improving lubricants
IPC: A45D40/02
Filed: 1936-01-27
Abstract: Polymer products suitable as pour - point depressants and anti-oxidants for lubricants are obtained by treating with selective solvents the polymers obtained at temperatures above 50 DEG  C. from esters, e.g. glycerides, of fatty acids containing eight or more carbon atoms and one or more double bonds and/or hydroxyl groups, by means of boron halides, e.g. boron fluoride.  Selective solvents specified are alcohols, ketones, phenols, esters, aldehydes, chlorhydrins, ethers and chlorinated ethers, nitrogenous compounds, e.g. nitrobenzene, aniline, and nitriles, liquid sulphur dioxide, low-boiling hydrocarbons, e.g. propane and butane, and mixtures thereof.  The esters to be polymerized may be those of acids from drying or semi-drying oils or synthetic acids of similar constitution.  These may be polymerized undiluted or mixed with solvents such as benzine, illuminating oil, carbon tetrachloride. The boron fluoride may be used as a gas, as an addition compound, or in solution, e.g. in nitrobenzene.  The high-molecular fractions, difficultly soluble in the above selective solvents, may be lightened in colour, e.g. by bleaching earths, they may be further treated with selective solvents, or with boron fluoride or they may be added direct to lubricants. The low-molecular fractions soluble in the selective solvents may be treated again with boron fluoride to obtain high-molecular products.ALSO:Polymerization products suitable as pour-point depressants and antioxidants for lubricants are obtained by subjecting polymers obtained at temperatures above 50 DEG  C. from esters of fatty acids containing one or more double bonds and/or hydroxyl groups e.g. their glycerides by means of boron halides e.g. boron fluoride, to treatment with selective solvents, e.g. alcohols, ketones, phenols, esters, aldehydes, chlorhydrins, ethers and chlorinated ethers, nitrogenous compounds such as nitrobenzene, aniline and nitriles, liquid sulphur dioxide, low-boiling hydrocarbons such as propane and butane, and mixtures thereof.  The esters to be polymerized may be those of acids from drying or semi-drying animal or vegetable oils, e.g. soya bean, cottonseed, castor, rapeseed, linseed, whale, and neat's-foot oils, or esters of synthetic fatty acids of similar constitution.  These may be polymerized undiluted or mixed with solvents such as benzine, illuminating oil, carbon tetrachloride.  The boron fluoride may be used as a gas, as an addition compound, or in solution, e.g. in nitrobenzene.  The high-molecular fractions, difficulty soluble in the above selective solvents, may be lightened in colour, e.g. by bleaching earths, they may be further treated with selective solvents or with boron fluoride, or they may be added direct to lubricants. The low-molecular fractions, soluble in the selective solvents may be treated again with boron fluoride to obtain high-molecular products. In examples, (1) soya bean oil, (2) cottonseed oil are polymerized by boron fluoride and the polymer extracted with amyl alcohol.
Patent GB-1325391-A (GB)
Title: Polysulphide sealant containing ultra-violet absorbers as adhesion stabilizers
IPC: C03C17/32
Filed: 1971-07-05
Abstract: 1325391 Polysulphide compositions THIOKOL CHEMICAL CORP 5 July 1971 [14 Sept 1970] 31486/71 Heading C3R A curable polysulphide polymer composition with improved resistance to loss of adhesion to glass exposed to ultraviolet radiation comprises a liquid polysulphide polythiol polymer, a water-activatable calcium peroxide curing agent in an amount of 2-20 parts per 100 parts by weight of the polymer, and an organic ultraviolet light absorber which absorbs radiation at 330-350 mÁ preferably in an amount of 0À1-5 parts per 100 pbw of the polymer. Examples of suitable U.V. absorbers include #-pheny derivatives of alpha-cyano-acrylic esters and amides and benzophenones containing at least 2 substituents selected from hydroxy, halogen and alkoxy, wherein at least one of which is an hydroxy group. The polysulphide polymer generally has the formula HS(BSS) x SH where R is a divalent, aliphatic organic radical which may contain O or S in the carbon chain and x has a value such that the molecular weight of the polymer is 500-25,000. Conventional additives may be present in the composition such as carbon black, chlorinated biphenyl plasticizer. Uses.-Adhesives particularly for glass to metal surfaces.
Patent GB-1012264-A (GB)
Title: Preparation of azodiformate diesters and novel secondary aliphatic diesters
IPC: C08J9/10
Filed: 1964-08-04
Abstract: Blowing agents for polymeric materials, e.g. polypropylene, comprise di-(sec. alkyl or sec. chloroalkyl) azodiformates of general formula <FORM:1012264/C3/1> where R1, R2, R3 and R4 are alkyl or haloalkyl groups of 1 to 7 carbon atoms (see Division C2) and specified compounds are diisopropyl di-(sec. butyl) and di-(sec. octyl) azoformates.ALSO:The invention comprises compounds of general formula <FORM:1012264/C2/1> where R1, R2, R3 and R4 are alkyl or halo-alkyl groups of 1-7 carbon atoms, specifically diisopropylazodiformate di-(sec. butyl) azodiformate, and di-(sec. octyl) azodiformate and a process of preparation thereof by reacting a haloformate ester, hydrazine and a soluble alkaline compound in water as reaction medium to produce a hydrazo diester product and oxidizing to convert to azodiformate diester. Aliphatic, cycloaliphatic or aromatic halo-formates may be used preferably methyl, ethyl, isopropyl, sec. butyl and sec. octyl chloroformates, and the liquid medium may include ethanol, isopropyl ether, methylene chlorides, benzene and cyclohexane.  An acidic oxidizing agent such as chlorine, bromine or nitric acid is preferred.  Examples describe the preparation of diisopropyl, dimethyl, diethyl, and di-(secondary butyl and octyl) azodi-formates. The compounds are suitable for use as blowing agents.
Patent GB-685177-A (GB)
Title: Improvements in aqueous dispersions of butyl rubber-natural rubber blends
IPC: C08J3/03
Filed: 1950-12-29
Abstract: A dispersion of vulcanized particles of a blend of butyl rubber and natural rubber in aqueous medium contains a dispersing agent, e.g. an alkali metal, ammonium or amine soap, or a glycol ester, of a saturated or unsaturated fatty acid having 10-20 carbon atoms, a protein, or colloidal clay.  The butyl rubber is obtained by the polymerization of 99.5-85 per cent of an iso-olefine, e.g. isobutylene, 2-methyl butene-1, 2-ethyl butene-1, with 0.5-15 per cent of a conjugated diene, e.g. butadiene-1,3, isoprene, 2,3 - dimethyl butadiene - 1,3, piperylene.  The soap-forming fatty acid is exemplified by capric, undecanoic, lauric, myristic, palmitic, margaric, stearic, oleic, linoleic and arachidic acids and the mixtures of fatty acids with rosin acids in tall oil acids.  The ratio of natural to butyl rubber may be from 1 : 10 to 1 : 1.  The soap may be 3 to 15 per cent of the blend.  A tackifying resin, exemplified by wood rosin and hydrogenated and esterified modifications thereof, coumarone-indene resins, terpene resins, asphalt and allied bitumens, may be incorporated, preferably in amount not exceeding twice the weight of the blend.  Examples are concerned with preparing the blend by mixing butyl rubber into smoked sheet banded on a rubber mill, mixing a fatty acid and aqueous ammonia, or aqueous ammonia and potassium hydroxide, and, if desired, the tackifying resin, into the blend to produce a dispersion thereof, adding aqueous pastes of sulphur, zinc oxide and zinc dibutyl dithiocarbamate, and, if desired, sym. di-b -naphthyl-p-phenylene diamine, and vulcanizing the particles of the blend by heating the so-compounded dispersion for 18-24 hours at 60 DEG  C. Specification 679,336 is referred to.ALSO:IV (a) A dispersion of vulcanized particles or a blend of butyl rubber and natural rubber in aqueous medium contains a dispersing agent, e.g. an alkali metal, ammonium or amine soap, or a gly col ester, of a saturated or unsaturated fatty acid having 10-20 carbon atoms, a protein, or colloidal clay.  The ratio of natural to butyl rubber may be from 1 : 10 to 1 : 1.  Soap, if em ployed as dispersing agent, may be 3-15 per cent of the blend. A tackifying agent, exempli fied by wood rosin and hydrogenated and esteri fied modifications thereof, coumarone-indene resins, terpene resins, asphalt and allied bitu mens may be incorporated, preferably in amount not exceeding twice the weight of the blend.  Examples are concerned with preparing the blend by mixing butyl rubber into smoked sheet banded on a rubber mill, mixing a fatty acid and aqueous ammonia, or aqueous ammonia and potassium hydroxide, and, if desired, the tackifying resin, into the blend to produce a dis persion thereof, adding aqueous pastes of sul phur, zinc oxide and zinc dibutyl dithiocarbam ate, and, if desired symmetrical di-b -naphthylp-phenylene diamine, and vulcanizing the par ticles of the blend by heating the so-compounded dispersion for 18-24 hr, at 60 DEG  C. Specifica tion 679,336 is referred to.
Patent GB-663784-A (GB)
Title: Improvements in or relating to carburetters for internal-combustion engines
IPC: F02M9/133
Filed: 1948-12-07
Abstract: 663,784. Spray carburetters. CATT, F. A. Dec. 6, 1949 [Dec. 7, 1948 ; Dec. 7, 1948], Nos. 31604/48 and 31692/48. Class 7(iii) A carburetter comprises a slidable member 13 forming an adjustable Venturi with a choke member 12 in which are formed fuel orifices 28, 30, the member 13 forming the sole means for adjusting, during operation, the amount; of air, fuel and combustible mixture passing through the carburetter. Fuel from the float chamber 32 is emulsified at jets 22, 23 and flows through pipes 24, 25 to annular chambers 26, 29 feeding respectively the two sets of fuel orifices 28, 30, the outlets of which air inlet of the jet 22 at starting. A valve member 13, controlled by the accelerator pedal, is raised, an increasing number of fuel orifices passes to the engine side thereof to provide good atomization of the fuel. A piece of gauze 19 breaks up any fuel drops, and a valve actuated manually or by a temperature responsive device may be provided to close the emulsifying air inlet of the jet 22 at starting. A valve controlled by a suction-actuated diaphragm is opened, when the engine is overrunning, to admit air to a passage 31 to destroy the suction in the passage 24 and put the jet 22 out of operation. The diaphragm may also be used to actuate a 'spark-advance mechanism.
Patent GB-366498-A (GB)
Title: Improvements in and relating to vitrified argillaceous products
IPC: C04B33/32
Filed: 1930-10-21
Abstract: Moulded vitrified ware is formed by heating natural clays &c to a high temperature so that 20 to 35 per cent of the constituents melt or soften, producing a mass which is sufficiently plastic to bond under pressure, the molten portion being forced into the interstices of the solid grains, but which will not flow as a suspension of solid particles in a liquid mass.  The temperature of moulding lies between that at which vitrification begins and that at which a pyrometric cone of the material collapses (P.C.E. value), temperatures up to 100 DEG  C. below the P.C.E. value being preferred.  The material may be compressed, at least momentarily, in a pressure-tight mould. Alternatively it may be roughly shaped in a wet state, heated to within the "vitrification range" and finally shaped under pressure.
Patent GB-354624-A (GB)
Title: Improvements in rotary valves for engines
IPC: F01L7/02
Filed: 1930-10-21
Abstract: 354,624. Valve components. THORKILDSEN, J., Sandnes, near Stavanger, Norway. Oct.21, 1930, No. 31652. [Class 135.] Closure members, rotary cylindrical.- In a rotary valve for internal-combustion and other engines, comprising cylindrical sections 3 formed with through-ports 4 for controlling inlet and exhaust, each section is formed with a longitudinal slit 17 extending the whole length of the section and filled by an insertion plate, preferably of elastic material, in order to maintain the valve fluidtight. The insertion plate is formed with a slot corresponding to the port 4. The valve sections are connected together by dovetailed ribs and grooves 5, 6, the end rib being connected to a flange 7 formed on the driving-shaft 8. This shaft is connected by a key 13 to a gear wheel 12 running loosely on the bearing 9. The opposite end of the valve casing is fitted with a plug 16 which may be removed to allow the insertion of a key which engages the groove 6 for turning the valve by hand during fitting.