baber/WOPTO huggingface dataset:
Patent GB-537709-A (GB)
Title: Improvements relating to the production of resinous substances and to their use
IPC: G03C1/795
Filed: 1939-12-30
Abstract: 537,709. Resinous polymerization products ; photographic films. KODAK, Ltd. Dec. 30, 1939, No. 33119. Convention date, Dec. 30, 1938. [Class 2 (iii)] [Also in Group XX] Synthetic resinous products are obtained by heating a heteropolymer of a vinyl organic ester and an α, #-dicarboxylic acid or its anhydride with one or more monohydric alcohols in the presence of a strong mineral acid, e.g. sulphuric or hydrochloric acids. The heteropolymer of the α, #-dicarboxylic acid is that obtained by hydrolysis of the anhydride heteropolymer. Preferably the temperature of the reaction is 50-100 C. and reaction is continued until the carboxyl content (calculated as α, #-dicarboxylic acid) is not more than 7 per cent. by weight of the resin and the acyl group content (calculated as vinyl ester) riot more than about 10 per cent. and preferably 5 per cent. or less. Specified heteropolymers are those derived from maleic or itaconic anhydrides and vinyl acetate, propionate or benzoate ; specified alcohols are methyl, ethyl, n-propyl, n-butyl and n-amyl alcohols. The products may be used for the production of cast films or sheets, in the production of safety glass and laminated products and for the production of extruded sheets or threads; yarns spun from dried threads may be dyed by means of basic dyestuffs and the affinity for such dyestuffs can be increased by partial hydrolysis with aqueous acetic acid. Partially hydrolyzed products can be used to form backings, e.g. anti-halation backings, for photographic films. The products are compatible with cellulose esters, plasticizers &c. a comprehensive list being given ; when plasticized, the products may be shaped by extrusion or injection or pressure moulding. The products are particularly applied to the subbing of photographic films having a support comprising an organic derivative of cellulose ; a gelatine film may be interposed between the resinous coating and the photographic layer with or without a protective coating of nitrocellulose or hydrolysed cellulose acetate over the resin layer; gelatine may be incorporated in the resin layer. Examples are given of the production of (a) resinous products from a heteropolymer of maleic anhydride and vinyl acetate by heating in the presence of sulphuric acid with methyl, ethyl, n-propyl, n-butyl, n-amyl and a mixture of methyl and n-butyl alcohols, (b) heteropolymer of maleic anhydride and vinyl acetate and (c) photographic film having a base of cellulose acetate or cellulose acetate propionate coated with a subbing layer or layers of the resinous product with and without gelatin and with or without a protective layer of nitrocellulose. Specification 376,481 is referred to.
Patent GB-705476-A (GB)
Title: Circuit for multiplying binary numbers
Inventor: ROBINSON ARTHUR ALEXANDER
IPC: G06F7/52
Filed: 1948-12-23
Abstract: 705,476. Digital electric calculating-apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 10, 1949 [Dec. 23, 1948], No. 33190/48. Class 106 (1). [Also in Group XL(c)] An electric circuit for multiplying two binary members each represented by a series-mode train of digit signals, e.g. a pulse for "1" and no pulse for "0", comprises gate circuits G 0-3, Fig. 3, which are conditioned by respective digits of one number N, and have the train representing the other number M fed thereto, the gate outputs being fed to adding devices A 1-3 connected in series with one-digit-period-delay devices D 1-3, in such a manner that the output of the last adding device A1 represents the required product. The circuit illustrated in Fig. 3 is for multiplying two four-digit numbers, the gates G 0-3 being conditioned by successively higher N-digits. A device D.P.G., generating regular "dash" pulses, Fig. 1, feeds circuits C which each select one of the pulses P0 to P3, e.g. as described in Specification 705,477, [Group XL(c)], and send it to a corresponding gate. If a P-pulse coincides with an N-pulse (representing digit "1"), Fig. 1, the gate is opened to allow the train of M-pulses (representing partial products) to pass to the adders which may be as described in Specification 692,853. Each gate comprises a pentode V11, Fig. 6, normally cut off at its control grid. The positive pulse Pn is fed through a condenser Cl 1 and renders a diode D11 non-conducting. If, at the same time, an N-pulse occurs, it is fed through a normally non- conducting diode D12 to raise the control grid potential of V11 so that current flows to the screen grid. The pentode is maintained conducting by positive dash pulses passed through a normally non-conducting diode D14 and differentiated by a circuit C12, R12 to restore any charge which has leaked from the condenser C13 in the control grid circuit. The positive M-pulses subsequently applied to the pentode suppressor grid produce negative output pulses at the anode. The gate circuits are cleared at the end of the multiplying period by the flyback portion of a time-base voltage produced by a generator T.B.G., Fig. 3, synchronized by the dash pulses. A circuit for the delay devices also is given (see Group XL (c)). Reference has been directed by the Comptroller to Specification 667,794.
Patent GB-1471741-A (GB)
Title: Signal indicato
IPC: F21S8/00
Filed: 1974-07-26
Abstract: 1471741 Signal lamps CARL-ZEISSSTIFTUNG [trading as JENAER GLASWERK SCHOTT & GEN] 26 July 1974 [6 Sept 1973] 33209/74 Heading F4R A signal indicator, e.g. a traffic signal lamp, comprises interposed between at least one light source 7 and a light-diffusing or light-dispersing lens 6 an optical light-conducting fibre component 2, 3 in which the separate light-conducting fibres are bunched together at the light input end 3 to form one or more single bunches of fibres corresponding to the or each light source 7 and are formed into a plurality of spread out bunches 2 at the light exit region 1, and where the spread out bunches emanate from more than one single bunch of fibres those from each single bunch are spread out over a common area of the light exit region 1. The spread out bunches from each single bunch may form an hexagonal or orthogonal closelypacked arrangement in the light exit region 1, and the lens 6 is mounted in front of this region 1 so as to be uniformly illuminated thereby. The light source 7 may comprise one or more tungsten coiled-filament or halogen lamps which may be of different light output, and which may be associated with an ellipsoidal or spherical reflector 5 and/or a light condenser. An interchangeable filter 4 may be arranged to provide a selectively coloured light output. A sensor and an associated electronic switching system may cause a stepwise variation in the efficiency of the light output in response to ambient brightness.
Patent GB-1074636-A (GB)
Title: Sulfur and peroxide curable acrylate interpolymers and vulcanizates therefrom
IPC: C08F220/12
Filed: 1964-08-14
Abstract: Curable interpolymers are prepared by polymerizing an acrylic monomeric material comprising an alkyl acrylate having 1 to 8 carbon atoms in the alkyl group, 0-30% by weight of acrylonitrile, 0.01-1.5% by weight of at least one polyene monomer containing at least two non-conjugated, ethylenically unsaturated bonds, and 0.5-10% by weight of dicyclopentadiene, the polymerization being effected at a temperature below the decomposition temperature of dicyclopentadiene. Polymerization may be effected using solution, suspension, emulsion or bulk processes with conventional peroxide, persulphate or azo catalysts, e.g. benzoyl peroxide or azobisisobutyronitrile; the catalyst may all be added initially or may be introduced incrementally or continuously. Aqueous suspension polymerization is preferred using sodium polyacrylate as a suspending agent. Many examples of polyene monomers are listed; in the examples allyl acrylate and methacrylate are used.  The interpolymers can be cured by heating with sulphur and/or a peroxide curing agent, e.g. dicumyl peroxide; substances such as stearic acid, carbon black, zinc oxide, benzothiazyl disulphide and tellurium diethyldithiocarbamate may be present during curing.
Patent GB-479897-A (GB)
Title: Manufacture of isocyclic compounds
IPC: C07C303/32
Filed: 1936-06-05
Abstract: Products stated to have wetting, foaming, dispersing, and cleansing properties are obtained by treating with a salt of a polybasic mineral acid, a compound having the formula R.X.Y wherein R is an aromatic or hydroaromatic residue containing as a substituent at least one hydrocarbon residue with at least 3 carbon atoms, X is an alkyl residue united directly or by means of oxygen, nitrogen or sulphur with R, in the chain of which alkyl residue there may be one or more oxygen atoms and Y is a halogen atom in end position or approximately end position in X.  The product may be used in association with washing agents, e.g. phosphoric acid salts or bleaching agents or with common salt or sodium sulphate.  In examples, the following halogenated compounds are treated with sodium thiosulphate: (a) butylphenylbutylchloride, which is prepared by condensing benzene with butyricacid-chloride, reducing the product to butylbenzene and condensing the latter with succinic anhydride; by reduction, the product yields first butylphenylbutyricacid and then butylphenylbutanol which by treatment with thionylchloride gives butylphenylbutylchloride; (b) isooctylphenylethylchloride, obtainable by condensing phenylethylchloride with diisobutylene in the presence of boronfluoride and (c) isododecylcresyl b -chlorethylthioether which is prepared by treating, with thionyl chloride, isododecyl cresylhydroxyethylthioether, which may be obtained by treating the condensation product from thiocresol and isododecylene with ethylene chlorhydrin.  Samples have been furnished under Sect. 2 (5) of products prepared by treating the following halogen compounds with sodium sulphite: (a) tertiary octylnaphthoxyethylchloride, which is prepared by treating the parent alcohol with thionylchloride; (b) a mixture of alkylphenylethylchlorides prepared by condensing phenyl ethylchloride with a mixture of olefines obtained by dehydrating higher alcohols formed in the synthesis of carbon monoxide and polymerizing.ALSO:Products stated to have dispersing properties are obtained by treating with a salt of a polybasic mineral acid, a compound having the formula R.X.Y. wherein R is an aromatic or hydroaromatic residue containing as a substituent at least one hydrocarbon residue with at least 3 carbon atoms, X is an alkyl residue united directly or by means of oxygen, nitrogen or sulphur with R, in the chain of which alkyl residue there may be one or more oxygenation, and Y is a halogen atom in end position or approximately end position in X.  The products may be used in association with washing agents, e.g. phosphoric acid salts or bleaching agents or with common salt or sodium sulphate.  In examples, the following compounds are treated with sodium thiosulphate, butylphenylbutylchloride, isooctylphenylethylchloride and isododecyl cresyl-b -chlorethylthioether.
Patent GB-866283-A (GB)
Title: Improvements relating to electrical ironing machines
IPC: D06F65/04
Filed: 1957-10-25
Abstract: 866,283. Ironing-machines. DUNHILL, C. B. Jan. 23, 1959 [Oct. 25, 1957], No. 33435/57. Class 138 (2). In an ironing-machine comprising an electrically-driven roller 28 and an electricallyheated concave iron 9 with a table 29 spaced below the roller, arms 10 which support the iron at or near its ends are operated by a pedal 7 through a spring-loaded toggle linkage 15, 17, which is located below the table to allow unobstructed space between the roller and the table at the back and front. The toggle linkage extends in a horizontal direction between operative connections with the pedal at the front and with the support arms at the rear of the machine. The pedal 7 is detachably connected to a shaft 6 on frame 1 so as to swing from a front position to a rear position 7<SP>1</SP>, a tie-rod acting as a stop. Toggle links 15 connected to the ends of shaft 6 are pivoted at 16 to links 17 which are pivotally connected at 18 to a plunger 19 working in a cylinder 20 which is fixed to the lower end of arm 10. A compression spring 21 surrounding a rod 22 acts between the plunger and the rear end of the cylinder and an adjustable nut 24 limits the movement of the plunger out of the cylinder. A tension-spring 25 holds the arm 10 " in " or restores it to the " off " position when the toggle mechanism is in the broken condition. On straightening the toggle the iron is applied to the roller with a pressure dependent on the resistance of spring 21. If the toggle linkage passes beyond the dead centre position it remains locked until released by pedal 7, but it is automatically returned to the " off " position if the dead-centre position is not reached. The drive of the roller 28 is controlled by a projection on the shaft 6 which closes the circuit to an electric motor and a freewheel device is also included to allow hand movement of the roller. The legs 2 of the machine stand are detachable for ease of packing.
Patent GB-342358-A (GB)
IPC: C01B25/30
Filed: 1929-11-02
Abstract: Alkali phosphates and metallic oxides are obtained from metal-phosphorous alloys, such as iron, copper, or manganese phosphides, by heating the comminuted alloy with alkali carbonate or sulphate in such a way as to avoid fusion, for instance in a rotary furnace.  In the case of iron phosphide, temperatures from 800 DEG to below 1100 DEG  C. are referred to.  The required alloys may be obtained by heating say calcium or aluminium phosphate with a metal oxide and carbon with or without addition of lime or silica, and the metallic oxides obtained by decomposing the alloys be then used in the production of fresh phosphide, after separation by leaching of the sodium or potassium phosphate.  The slag obtained in producing the phosphide may be worked up to cement.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following subject-matter: the use, for decomposing the phosphides, of alkali chlorides or nitrates.  This subject-matter does not appear in the Specification as accepted.
Patent GB-626225-A (GB)
Title: A profiling grinder
IPC: B24B17/02
Filed: 1946-11-11
Abstract: 626,225. Profiling grinder. ANGERBY, E. A., CARLSSON, S. G., and BLOM, S. G. Nov. 11, 1946, No. 33496. [Class 60] In a profiling grinder in which the grinding wheel is reciprocated and the work is moved by means of a feeler mounted on a pantograph and cooperating with a template, the work support and template support are mounted on a common carrier adjustable relative to the grinding wheel. The machine frame 1 carries a grinding head on which the grinding wheel can reciprocate up and down; the grinding head is pivoted at 4 so as to be adjustable about an axis parallel to that of the grinding wheel, and is also pivoted at 5 so as to be adjustable about an axis at right angles to that of the grinding wheel. The machine frame 1 also carries a vertically adjustable table 3 on which are mounted crossed slides 9, 10 adjustable respectively by handles 7, 8. The slide 10 carries the lower slide 11 of further crossed slides, the upper slide 13 of which is provided with a holder 16 for securing the work and is connected at 15 to a pantograph 14 fixed at 17 to the slide 10; mounted at the free end 18 of the pantograph is a holder for a feeler which co-operates with a template secured on a table 12 carried by the slide 10. The holder is rotatably mounted in the pantograph and is connected by links 20 with a pivotally mounted disc 18a which is connected by links 20a with a plate 21 arranged at point 15 and rigidly connected to the slide 13; owing to the crossed slides 11, 13 the work always moves so that any line thereon remains unchanged in direction, and the linkage 20, 20a ensures corresponding motion of the feeler, the operative part of which has a shape corresponding to that of the grinding wheel. The apparatus is stated to be applicable to grinding a clearance angle on a turning tool. Specifications 463,767 and 626,226 are referred to.
Patent GB-829505-A (GB)
Title: Improvements in chemical reactor
IPC: B01J19/18
Filed: 1957-10-28
Abstract: <PICT:0829505/III/1> <PICT:0829505/III/2> A reactor for initiating a reaction in which a foamed resin, e.g. low density polyurethane foam, is produced, comprises an enclosed reaction vessel containing a driven rotor, the rotor being so constructed as to divide the reaction vessel into only two chambers or the reaction vessel being divided by a stationary member into only two chambers, one chamber comprising a mixing chamber provided with at least one fluid reactant inlet and the other chamber comprising a collecting chamber adjoining the mixing chamber, the collecting chamber being provided with a discharge orifice, passages being provided in the rotor or said stationary member to interconnect the mixing chamber and the collecting chamber, the rotor being provided with agitating means positioned only within the mixing chamber of the reaction vessel.  As shown in Fig. 1, the reaction vessel 8 is divided into a mixing chamber 15 and a collecting chamber 16 by means of a partition 14 having perforations 17.  The reactions are fed to the mixing chamber by nozzle 19 and vigorously agitated by the pins 30 attached to the rotor 23, which enmesh with pins 21 and 22 attached to the reaction vessel and partition.  The rotor also carries scrapers 32 which deflect viscous material away from the reactor walls and thus prevent accumulation on the walls.  The rotor disc 31 is provided with perforations 33 to assist in the flow of liquid through the reactor. The rotor is attached to shaft 25 driven by pulley 28 and V-belt 29. For portable use, this drive may be replaced by a flexible cable. The product discharges from outlet 13.  Two injection inlets (19) may be provided and reactants, e.g. toluene diisocyanate and a polyester, separately introduced to the mixing chamber.  Fig. 4 shows another embodiment in which the mixing chamber 48 is separated from the collecting chamber 49 by means of partition 47, similarly perforated, and attached to rotor 44.  The reactants are introduced through inlets 42 and 43 and after vigorous agitation by the blades 52 of the rotor pass into collector 49 and are discharged.
Patent GB-824562-A (GB)
Title: Improvements in or relating to filtration apparatus
Inventor: JOHNSON JOHN ARTHUR
IPC: B01D25/12
Filed: 1954-11-20
Abstract: 824,562. Filters ; systems of filtration. SERVICE (ENGINEERS) Ltd. Feb. 20, 1956 [Nov. 20, 1954], No. 33644/54. Class 46. The apparatus of the invention is intended to make possible a procedure for obtaining, from a material such as pottery slip having an accurately-known percentage of water, a filter cake containing a desired percentage of water. In one form, pottery slip is fed from a storage receptacle 11 by a pump 15 of the construction described in Specification 677,136 [Group XXVIII] to a filter press 19, of conventional construction but having its effective volume for filter cake known. The water escaping from the press during pumping of the slip into it is received in a sump constructed in the floor beneath the press (part, 21, being shown) and flows from the sum via a syphon 33, a solenoid-controlled valve 31, and an integrating water meter 27 incorporating a pre-setting adjustment, to a storage tank 25. In operation the pointer of the water meter is pre-set to a value corresponding to the previously-calculated amount of water which must escape from the press for a filter cake of the desired water-percentage to be obtained. The pump 15 is then set in operation, and a pushbutton at 29 is depressed to cause the valve 31 to open and the meter 27 to be set in operation. When the meter pointer reaches zero an electrical circuit is automatically made which gives an audible and/or visual warning, stops the pump 15, shuts the valve 31 and resets the pointer of the meter 27. Instead of the pump being stopped a valve in the inlet pipe 17 may be closed. Alternatively the desired filter cake may be obtained by feeding a previouslycalculated quantity of slip, the percentage of water in which is accurately known, into a filter press of known effective cake volume.
Patent GB-947565-A (GB)
Title: A spring suspension for drum washing machines for attachment of the washing and spinning drum to the frame
IPC: D06F37/22
Filed: 1962-09-03
Abstract: 947,565. Spring suspensions. RONDOWERKE G.m.b.H. Sept. 3, 1962 [Oct. 21, 1961], No. 33765/62. Heading F2S. A spring suspension for drum washing machines comprises a spring 5 and a bracket 2 having two flat shoulders 3, the edge faces of which possess grooves 4 so that the bracket can be screwed into the spring. In the construction shown the bracket is provided with two parallel lugs 6 (Fig. 3, not shown) bent over at an angle of 90 degrees or less to co-operate with a suspension rail 7. The body part of the bracket is U-shaped.
Patent GB-478542-A (GB)
Title: Improvements in or relating to the connection of adjacent relatively moveable structural elements
IPC: E01C11/22
Filed: 1936-12-10
Abstract: 478,542. Paving; walls; kerbs ; blocks. INDUSTRIEELE EN BOUWMATERIALENHANDEL-MAATSCHAPPIJ IBOMA. Dec. 10, 1936, Nos. 33972, 33973, and 33974. Convention dates, Dec. 10, 1935. Nov. 4, 1936, and Nov. 7, 1936. [Classes 20 (ii), 20 (iv), 87 (i), and 107] Structural elements such as bricks, kerbstones, partition walls, and the like, are provided with hemispherical recesses and are interconnected by ball - shaped members of concrete or the like which fit into opposed recesses of adjacent elements. In casting a kerb in situ, between mould boards 2, Figs. 1 and 3, the mould box is subdivided into a number of compartments by steel partitions 4 which are apertured to receive the concrete balls 6. The latter are each formed of two hemispheres of different diameters thus providing a circumferential ridge which bears against a partition. Concrete is then poured into one compartment and when it has hardened the partitions are removed. Strips 7 of cardboard, perforated to fit over the projecting portions of the balls, are then applied to the ends of the concrete and hemispherical caps 8 of papier-mÔchÚ are fitted over the projecting heads of the balls. The papier-mÔchÚ is thinner than the cardboard. Concrete is then poured in the next compartment. In a modification, partitions with hemispherical projections are employed and spherical balls are inserted in the hemispherical cavities formed thereby. In the construction shown in Fig. 8, the head end of a kerbstone is formed by six inclined surfaces 31 ... 36 radiating from the ball 37 and the lower face 32 has a projection 40 adapted to engage a recess in the adjacent kerbstone. Relative rotation of adjacent elements, caused, for instance by a settlement of the subsoil, is thus permitted. The road covering, Fig. 10, is formed of blocks arranged in staggered formation and having hemispherical recesses 52 for the reception of the balls 54 in their longer sides. A hole 55 is provided in one of the blocks for the reception of a barbed hook whereby any sunken portion of the road may be lifted and the space beneath the blocks filled with sand which may be blown in. The road may be made of large areas of blocks arranged as above described and intervening areas of readily removable blocks. By removing the latter, access to the blocks of the larger areas is readily obtained.