baber/WOPTO huggingface dataset:
Patent GB-1353091-A (GB)
Title: Pistons
IPC: C08G69/46
Filed: 1971-08-02
Abstract: 1353091 Polyamide articles DYNAMIT NOBEL AG 2 July 1971 [4 July 1970] 31193/71 Heading C3R [Also in Division F2] A piston for a shock absorber (in which a piston fixed to a rod is displaceable in a cylinder and guided in a damping fluid so that the cylinder is divided into two chambers of varying volume) is formed, e.g. moulded or extruded as a transparent or coloured article, of an amorphous polyamide containing residues of aliphatic straight or branched chained or cycloaliphatic diamines, aromatic diamines or aliphatic lactams and residues of aliphatic or aromatic dicarboxylic acids, the polyamide having a viscosity number, measured according to DIN 53727 in a 0À5% by weight solution in m-cresol at 25 C., of 100-200 ml.g.<SP>-1</SP>. The polyamide may comprise acidic residues derived from terephthalic acid and the diamine residues derived from 2,2,4 - trimethlyhexamethylenediamine, 2,4,4 - trimethylhexamethylenediamine, 1,7 - diamino - 4,4 - dimethyloctane, hexamethylenediamine or mixtures of these. The terephthalic acid residues may be derived from dimethylterephthalate. The acidic residues may be derived from isophthalic or naphthalenedicarboxylic acid. The polyamide may comprise acidic residues derived from adipic or sebacic acid and residues derived from hexamethylenediamine, p,p<SP>1</SP> - diaminocyclohexylpropane or -methane or from caprolactam. Diamine components for the preparation of the polyamide may also be nona-, deca- and dodecamethylenediamine, alkyl substituted diamines such as 2-methyl-4-ethylhexamethylenediamine, 2,2,5,5 - tetramethylhexamethylenediamine, 3 - isopropylhexamethylenediamine, 3 - isooctylhexamethylenediamine, 3 - isododecylhexamethylenediamine and 2,4 - diethyloctamethylenediamine; cyclic diamines such as 2 - aminomethyl - 3,5,5 - trimethylcyclohexylamine; and aromatic diamines such as phenylenediamine and xylylenediamine. Diamines of the formula may be used, wherein R<SP>1</SP> is hydrogen or an alkyl group having 1-4 carbon atoms. R<SP>2</SP> is an optically alkyl-substituted alkylene group having 1-10 carbon atoms in the chain or an optionally alkyl-substituted phenylene group, and R<SP>3</SP> is an alkyl group having 1-4 carbon atoms. Examples are given. A concentrated aqueous solution of the diamine salt with the acid can be polycondensed in the melt with heating, pressure and then low pressure. Instead of the pressure stage there can be precondensation of the salt in high-boiling solvents and then vacuum applied. Alternatively dicarboxylic acids or their lower alkyl esters can be reacted with equimolar quantities of diamine in the presence of water and polycondensed. Instead of alkyl esters, diarylesters of the acids may be used without water. Before moulding, the polyamide is heated for 8-16 hours under reduced nitrogen pressure. Specifications 1,328,523 and 1,049,987 are referred to.
Patent GB-409407-A (GB)
Title: Improvements in coupling devices more particularly intended for motor operated electric switches
IPC: H01H3/26
Filed: 1932-11-05
Abstract: 409,407. Actuation of switches. NUTT, H., 20A, Barclay Oval, Woodford Green, Essex. Nov. 5, 1932, No. 31279. [Class 38 (v).] A mechanism for coupling a worm wheel 2, that is continuously driven by a worm 1, to a shaft 3 comprises a member 8, which is keyed to the shaft 3 and has a projection 9 engageable by a cam follower 5, which is slidable within a housing 4 on the wheel 2 and urged by a spring 6 against the member 8. The engagement between 9, 5 is normally prevented by a cam 7 which is slidable on a bearing 24 of the shaft 3 and has a raised surface which at every revolution of the wheel 2 lifts the follower 5 over the projection 9 (Fig. 2). Movement of the cam to the right is prevented by a lock 23 which is urged by a spring 22 to engage a surface 21 on the wheel 2, but when the housing 4 (which forms part of the surface 21) depresses the lock 23, the cam can be withdrawn and the lock 23 is then held inoperative. To enable the coupling 9, 5 to engage, an electromagnet 11 is energized and raises by means of its armature, a link 12 which is slotted to receive a pin 13<a> on a lever 13, whereby the latter rotates and withdraws the cam at the moment the latter is unlocked. The cam is held in this position by the engagement of a latch 17 over a part 18, but after the coupled shaft 3 has made a halfturn a cam surface 19 thereon moves the lever 12 to disengage 17, so that the spring 15 restores the cam to the position shown. After another half-turn the follower 5 engages the raised surface of the cam and is disengaged from 9, the shaft 3 having thus made one full turn. To allow rotation in either direction, the keyway 24<a> is made slightly wider than the key (Fig. 2).
Patent GB-373928-A (GB)
Title: Improvements in or relating to luminous electric discharge tubes
IPC: H05B41/40
Filed: 1931-11-12
Abstract: 373,928. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent- Treuhand Ges. fur Elektrische Gl³hlampen; 11, Ehrenbergerstrasse, Berlin.) Nov. 12, 1931, No. 31339. Convention date, Feb. 14. [Class 39 (i).] Luminous discharge tubes filled with mixtures of gases or gases and vapours are operated on direct current and the polarity of the electrodes is reversed at intervals. The direction of the migration of the more electropositive gas towards the cathode is thus reversed in the tube to avoid a separation of the filling by the discharge sufficient to produce colour changes along the tube. If the tube is operated continuously for more than 10 hours, the polarity is reversed by hand or time-switch every 5 or 6 hours. Reversal each time the tube is switched on is usually sufficient and may be produced by a switch 4 rotatable in one direction only. Insulated discs 5, 6 on the rotatable shaft and connected to the electrodes 2, 3 of the tube carry contacts 10, 11 sliding over segments 12, 13 connected to the current source so that the tube is switched on or off by a turn through a right-angle.
Patent GB-211548-A (GB)
Title: A method of, and apparatus for, attaining high temperatures of combustion in burning fuel in brick furnaces
IPC: F23M5/08
Filed: 1922-11-16
Abstract: -211,548. Helbig, F. Nov. 16, 1922. Air, supplying; walls and linings; cooling.-A furnace burning liquid or finelydivided solid fuel is lined throughout with fire-brick, as shown at c<1>, Fig. 9. having small and densely disposed perforations through which air for combustion is injected, the fuel being fed to the furnace in a continuous stream from a pipe such as g and receiving injections of air throughout its course to the exit of the furnace. The air is supplied by a fan e to a jacket d surrounding the furnace and passes to the furnace through the perforations which may be perpendicular or inclined to the direction of the stream of fuel. The perforated fire-brick is so cooled by the passage of the air that it is maintained at a temperature below its melting or softening point. Specifications 2578/73, 352/74, 2506/76, and 18471/14 are referred to.
Patent GB-1364675-A (GB)
Title: Composite polymeric materials
IPC: C04B20/10
Filed: 1972-06-07
Abstract: 1364675 Coated particles I M P E R I A L CHEMICAL INDUSTRIES Ltd 7 June 1972 [5 July 1971] 31415/71 Heading B2E [Also in Divisions C1 and C3] Particulate material (M) is coated with aq Na silicate solution, and the coated particles are then further coated with (C) a colouring matter. The coated particles are then dried at <150‹C. Material (M) may be organic or inorganic. It may have diameter #1.5 inch. It may be a polyamide, polyester, polyesteramide, polymer or copolymer of vinylchloride, urea-, phenol- or melamine-formaldehyde, vinyl acetal polymer, ABS terpolymers, cellulose acetate, nitrate, or butyrate, polycarbonate, polystyrene, polyurethane, epoxy resin, gelatin, casein, polyethylene, or polypropylene; or (M) may be mineral, e.g. flint, slate, china clay, glass, fly ash, foamed silica, expanded clay, mica, chalk, talc, asbestine, barytes, silica, bauxite, micaceous Fe oxide, diatomaceous earth, or glass spheres. The silicate solution may be#20% strength. There may be 3-15 parts Na silicate per 100 (M). (M) and (C) may be mixed together before mixing with the silicate solution or (M) and the silicate solution may be mixed before (C) is added. Colourant (C) may be an organic or inorganic colouring matter, a long list of types being given. Use:-in polymer compositions.
Patent GB-1513374-A (GB)
Title: Aqueous thermosettable coating compositions
IPC: C08F220/00
Filed: 1974-07-16
Abstract: 1513374 Thermosetting coating compositions CANADIAN INDUSTRIES Ltd 8 July 1975 [16 July 1974] 31427/74 Headings C3M and C3R Aqueous thermosetting coating compositions of pH 6 to 9 comprise as polymeric binder (1) 40 to 90 parts by weight of an emulsion copolymer of reduced viscosity of 0À2 to 0À8 dl./g. at 25‹ C. in ethylene dichloride/ethanol (95/5) at 0À5 gm. of copolymer per 100 ml. solvent and comprising 93 to 75 weight per cent of styrene, alpha-methylstyrene or C1-12 alkyl acrylates, methacrylates, itaconates, maleates or fumarates, and 7 to 25 weight per cent of reactive monomers comprising (i) 5 to 15 weight per cent of C2-4 hydroxyalkyl acrylate or methacrylate and (ii) 2 to 10 weight per cent of unsaturated carboxylic acid; (2) 5 to 40 parts by weight of a dissolved, compatible, amine-neutralized copolymer having a reduced viscosity of 0À12 to 0À50 dl./g. and comprising 5 to 25 weight per cent of C2-4 hydroxyalkyl acrylate or methacrylate, 2 to 15 weight per cent of unsaturated carboxylic acid and 93 to 60 weight per cent of styrene or C1-12 alkyl acrylates, methacrylates, itaconates, maleates or fumarates; and (3) 8 to 40 parts by weight of a water-soluble or water-dispersible melamine/formaldehyde resin, the parts by weight of (1), (2) and (3) totalling 100. The emulsion copolymer may also contain 1 to 5 weight per cent of an ionic monomer such as sulphoethyl methacrylate, vinyl sulphonate or allyl sulphonate. The compositions may comprise plasticizers and metal flake or other pigments and are useful as automobile and truck finishes.
Patent GB-292177-A (GB)
Title: Improvements in water circulation control for internal combustion engines
IPC: F01P7/14
Filed: 1926-12-11
Abstract: 292,177. Angers, A. Dec. 11, 1926. Cylinders, cooling.-Means for keeping hot the cooling water of the engine of a motor-vehicle, when the vehicle is stationary, comprise a stop valve in the pipe line between the cylinder jacket and the radiator and coupling means to close the valve from a part-e.g. the hand brake lever, or the magneto switch-which is operated to stop the vehicle. As shown, a butterfly valve 1, mounted in a casing 11 and connected by hose connections in the cooling water circuit, is opened by movement of the brake lever 8 and closed by a spring 9<a>, a spring 9 or other lost-motion device being provided in the connection 7. Provision may be made for opening the valve again while the brake is applied-e.g. a ratchet connection with the lever 8. The valve may be operated by electromagnetic means.
Patent GB-309374-A (GB)
Title: Improvements in or relating to potato and like cleaning or grading machines
IPC: B07B13/00
Filed: 1928-06-12
Abstract: 309,374. Clark, A. T., and Shepherd, F. W. H. June 12, 1928. Divided on 303,210. Sorting on picking or sorting tables and the like.-A device for facilitating the hand-sorting of potatoes &c. comprises a conveyer with means for turning the articles to be sorted over so as to expose different sides for inspection. The apparatus described comprises two conveyer bands 4, 24, Fig. 1, overlapping as shown to form a tumbling bank where one conveyer delivers to the other. The apparatus is mounted on a screening device from which it receives its charge by a shoot 81. The conveyer 4 is. driven from a power shaft 30 by worm and screw gearing 31 and chain gearing 19, and drives the upper conveyer 24 by chain gearing 22. The lower end of the conveyer 4 is supported in the screening frame and its free end bv ties 27. Struts 29 support the upper conveyer with its end over a collecting sack 28.
Patent GB-1021313-A (GB)
Title: Improvements in or relating to mine winders
Inventor: MACFADYEN COLIN
IPC: B66D5/26
Filed: 1962-08-18
Abstract: 1,021,313. Hoist brake control systems. FULLERTON, HODGART & BARCLAY Ltd. Aug. 18, 1962, No. 31768/62. Heading B8B. [Also in Division F2] The fluid pressure operated brakes of a twin drum mine hoist of the kind in which two oppositely wound winch drums are clutched to a common shaft require two ranges of brake control pressure for use respectively when both or only one drum is being driven. The invention is a control system for such a hoist and comprises a main valve 2 feeding pressure fluid through a line 33 to the brakes, a source of control pressure fed through a line 9 to operate the main valve, and an intermediate valve 8 whose setting controls whether the whole or only part of the face of a stepped piston 38 in the main valve is exposed to the control pressure. The source of control pressure is the Iverson valve 1 wherein the setting of handle 12 governs the magnitude of the pressure of fluid admitted through port 5 and emerging into line 9 by way of port 7. From line 9 control pressure is fed directly to port 45 of valve 2 and also by way of valve 8 to port 31 of valve 2. Valve 8 is operated by a separate control pressure line applied to port 27 and is the means whereby the effective area of piston 38 to be exposed to the pressure in line 9 is selected. The brakeoperating pressure is fed to port 35 of valve 2, and when the control pressure first moves the pistons 38 and 38<SP>1</SP> to the right to release the brake operating pressure into line 33 by way of port 34, the latter pressure is fed back to port 32 so as to tend to reclose port 34. Eventually a steady state is reached in which the brakes are energized at a constant pressure depending on the magnitude of the control pressure as determined by valve 1 and the effective area of piston 38 as determined by valve 8.
Patent GB-954615-A (GB)
Title: Perlite aggregate and process for making same
IPC: C04B20/06
Filed: 1962-08-20
Abstract: <PICT:0954615/C1/1> A porous glass is made from perlite ore by gradually increasing the temperature of the ore to the expansion temperature, expanding the ore and thereafter gradually decreasing the temperature to ambient, the treatment being affected under quiescent air conditions, as by heating the perlite ore indirectly. An electric furnace is used and may be either horizontal or vertical. The ore is fed by a vibratory feeder 2 to a hopper 4 leading to an electrically heated kiln 6 containing a stainless steel tube 8 vibrated by mechanism 9 to feed the ore through the kiln 6 to be received in a container 12.  A thermocouple 10 is positioned in the hottest part of the kiln 6 for controlling the three zones of heat in the tube 8, i.e. preheat, expanding and annealing temperatures.
Patent GB-445523-A (GB)
Title: Improvements in and relating to cathode ray tubes
IPC: H01J29/82
Filed: 1935-07-10
Abstract: 445,523. Cathode-ray tubes. BOSCH, F. J. G. VAN DEN, 14, Norman's Buildings, Central Street, St. Luke's, London. July 10, 1935, No. 31832. Divided out of 445,820. [Class 39 (i)] One or more electrodes are resiliently mounted on insulating rods fixedly secured internally to the envelope of the tube. Anodes 4, 5, Fig. 1, and bent deflecting plates 6 .. 9 are supported by pairs of springs 20 from each of four insulating rods 14 .. 17 supported by a band 19 from the stem 18. The anodes 4, 5 and plates 22, 23 welded to the plates 6 .. 9 all have clearance holes surrounding the rods and the springs 20 damp out vibration. A cathode 1, a modulator 2 with a frusto-conical neck and a cylindrical shield 3 are mounted on the pinch 13. The rods 14 .. 17 may be hollow to contain leads to the electrodes. In a modification, Fig. 2, the deflecting plates are each carried by two springs 26, 27 from each insulating rod. The Provisional Specification describes also a cathode of thoriated tungsten with or without a covering of highly emissive substance, and deflecting plates having two-thirds of their length bent away from the ray and coated with emissive material.
Patent GB-800360-A (GB)
Title: Data record member
IPC: G06K19/08
Filed: 1956-10-19
Abstract: 800,360. Marking inks. NATIONAL CASH REGISTER, CO. Oct. 19, 1956 [Nov. 9, 1955], No. 31835/56. Drawings to Specification. Class 146(3) [Also in Group XIX] Data is represented on a record card by marking with an ink which emits light when subjected to ultraviolet radiation and which sublimes when heated so that the marks can first be sensed by photoelectric means and then erased after sensing. The fluorescent material may be prepared by dissolving anthracene in ethyl hexane-diol and dissolving naphthacene in xylene. The solutions are then mixed and the xylene evap-  orated off by raising the temperature. Other ingredients which can be used are benzoic acid, anthranilic acid, beta-naphthol, fluorene, phenanthrene and acenaphthene. Other liquid carriers which may be used are phenylethylene glycol, dipropylene glycol and glycol diacetate. Specification 685,652 [Group XIX] is referred to.
Patent GB-227273-A (GB)
Title: A new or improved variable electric condenser or capacity
Filed: 1923-12-19
Abstract: 227,273. Fellows, D. V. L., Clark, L. V., and Pike, A. R. Dec. 19, 1923. Condensers.-In a variable condenser of the kind in which a flexible metallic plate 1 is separated from a rigid plate 8 by a dielectric member 9, the latter is gripped between the flexible and rigid plate members without positive attachment to either, so that it may readily be replaced by a dielectric member of different thickness, thus permitting the maximum capacity of the condenser to be varied at will. The rigid plate 8 is carried by an insulating member 6 rotatably mounted on a spindle 10 secured to the panel 4. One end of the flexible plate 1 is secured to the member 6 by screws 5, the other end being connected to a spring 2 secured to a pin 3 on the panel. The dielectric member is gripped between the rigid and flexible plates and is held in position by the tension of the spring. The capacity is varied by rotating a cam 16 which engages a rib 15 on the member 8, the cam being preferably of such a shape that the variations in the capacity are proportional to the angular movements of the control knob 18.
Patent GB-748104-A (GB)
Title: Improvements relating to building structures
IPC: E04B5/38
Filed: 1953-11-17
Abstract: 748,104. Reinforced concrete; floors; roofs; girders. PRE-STRESSED CONCRETE CO., Ltd., ISAAC, G., and LOWE, J. N. Dec. 2, 1954 [Nov. 17, 1953], No. 31870/53. Class 20(4). In addition to pre-stressing cables concrete members are reinforced by steel &c. ducts which accommodate the cables and by mesh formwork as of metal, expanded metal, plastic or strong textile material upon which the concrete is laid. For a floor or flat roof, mesh 1 is laid on scaffolding and ducts 2 of inverted U- shape and stirrups 6 are placed in position and wired or welded to the mesh, concrete 1¢ in. thick then being laid and when cured placed in compression by cables which are kept in tension within the ducts by means of washers and cones 8. Light cavity formers 9 are located between the stirrups and concrete 10. The concrete protrudes somewhat through the mesh and forms a rough keying surface for a subsequent rendering. The ducts 2 may be dispensed with by bending the mesh to form longitudinal ridges to accommodate the cables. In a modification separate planks are cast on a level bed, the mesh being cut to the length and breadth required, two ducts and an intermediate reinforcement bar being laid on it. After the planks are cured and the cables tensioned the planks are inverted and grout is poured into the ducts. At the site the planks are supported on scaffolding at 4 ft. intervals along their length, formers are laid clear of the gaps between the planks and concrete and a finishing screed surmounted by a surfacing material are applied. A further construction embodies an arched roof built up of similar planks which are arched to the required shape as by a tie member. A relatively deep layer of lightweight concrete may replace the structural concrete and formers.
Patent GB-884612-A (GB)
Title: Production of polymers
IPC: C07C2/24
Filed: 1959-09-18
Abstract: A process for the production of normally liquid hydrocarbon polymers comprises maintaining a mono-olefinic hydrocarbon having up to 6 carbon atoms per molecule at elevated temperature and superatmospheric pressure, whereby hydrocarbon polymers are formed, the reaction being effected in the presence of a liquid phase diluent and a catalyst initially present as a mixture of finely divided aluminium metal with aluminium bromide or aluminium metal with catalyst being free from aluminium chloride, aluminium fluoride and halides of metals of Group IV(a), V(a), VI(a) and VIII of the Periodic Table of Mendeleef.  The catalyst may also comprise magnesium metal.  The liquid phase diluent may be heptane or isooctane.  In an example, ethylene is polymerized in the presence of heptane, aluminium bromide and aluminium powder, and the product treated with concentrated hydrochloric acid and ice, and thereafter distilled.
Patent GB-1117598-A (GB)
Title: A process for inhibiting local discolouration in the colouring of glazes with chromium-containing pigments
IPC: C04B41/50
Filed: 1965-07-27
Abstract: Local discoloration in glazes coloured with Cr-containing pigments is inhibited by addition of CeO2 to the mill batch or to the pigment. The glaze preferably contains not more than 3 wt. per cent CeO2.  The pigments may be of the Sn/Ca/Cr or Sn/Cr systems.  The CeO2 yields oxygen at above 800 DEG  C., and counteracts the effect of reducing-agent impurities, e.g. metal, flue, carbon, or SiC dusts.
Patent GB-985402-A (GB)
Title: Improvements in or relating to containers
Inventor: WISEMAN ANTHONY PATRICK JAMES
IPC: B65D21/02
Filed: 1962-08-21
Abstract: 985,402. Stackable containers. VANTOREX Ltd. Aug. 2, 1963 [Aug. 21, 1962], No. 32114/62. Heading B8D. A container has on its top wall an upstanding neck or cap 4, and in its base wall a recess open to a side wall and of such a shape that when two such containers are placed side-byside with the side wall openings in register then the combined recesses will between them house the neck or cap of a similar container. If two such recesses 2, 3 are formed at opposite positions in the base wall the containers may be stacked upon each other in rows. The containers are moulded from plastics material and are of square cross-section, with caps and corresponding recesses of circular or polygonal cross-section.
Patent GB-343950-A (GB)
Title: Improvements in or relating to sieves
IPC: A01F12/34
Filed: 1929-10-23
Abstract: 343,950. Thrashing-machines. GRAEPEL, F., Halberstadt, Heinehaus, Germany. Oct. 23, 1929, No. 32217. [Class 58.] A straw-shaker is made with cross-bars a formed in a perforated metal plate b by folding so that the flat sides of each cross-bar are parallel to each other throughout all or the greater part of their height. Holes c are situated between the bars. The heads of the cross-bars mav be wider than the base and may be formed with flattened tops extending in the direction of progression of the straw. These tops may be formed by fixing strips of sheet metal to the upper edges of the cross-bars parallel to the perforated metal sheet. The bars may have the cross sections shown in Figs. 4 and 5.