baber/WOPTO huggingface dataset:
Patent GB-1520358-A (GB)
Title: Refrigeration system having hot gas defrost system
IPC: F25B47/02
Filed: 1976-10-19
Abstract: 1520358 Defrost systems EMHART INDUSTRIES Inc 19 Oct 1976 [7 Jan 1976] 43244/76 Heading F4H In a refrigeration system comprising a compressor assembly 10, a condenser 12, a receiver 24, a plurality of expansion valves 16 each associated with an evaporator 18, and a defrost hot-gas circuit 28 interconnecting the hot gas discharge line 14 with the evaporator 18, a balancing line 30 is provided between the receiver 24 and the line 56. The line 30 includes a solenoid-operated valve 32 and a oneway valve 34. During normal operation of the system, i.e. when the evaporators are operating for cooling purposes, valves 48, 50 are closed, and a pressure responsive valve 42 is open. When one of the evaporators, e.g. 18a requires defrosting, valves 32 and 48 are opened, and valve 42 is closed (depending on the existing pressure differential), causing the refrigerant pressure within lines 14 and 56 to be equalized immediately with the refrigerant pressure within the liquid line 20 and receiver 24. As soon as the pressures have equalized, the refrigerant pressure builds up within line 56 to increase to a value greater than the receiver pressure (valve 34 will close), such that reverse flow through the evaporator 18a is achieved. The refrigerant passes to the expansion valve 16b. The refrigeration system also includes pressure-regulating valves 40 and 46.
Patent GB-1167425-A (GB)
Title: Production of High Molecular Weight Hydroxyl-Containing Polyethers
IPC: C08G65/32
Filed: 1967-09-22
Abstract: 1,167,425. Hydroxy-containing polyethers. HERCULES Inc. 22 Sept., 1967 [26 Sept., 1966], No. 43344/67. Heading C3R. [Also in Division C1] Hydroxy-containing polyethers containing the repeating units where Z is R is -ZOH, R 1  or R 2 ; R 1  and R 2  are H, alkyl, alkenyl, aryl, alkaryl, cycloalkyl, aralkyl, haloalkyl or alkoxyalkyl; and n is 1 to 20, are prepared by polymerizing a silicon ester of an epoxy alcohol in the presence of an organometal compound as catalyst and reacting the polymer with a hydrogen-active compound to replace the silicon ester groups by hydroxyl groups. The silicon ester has the formula where R is ZOSiR<SP>1</SP>R<SP>11</SP>R<SP>111</SP> or any of R 1  and R 2 , and R<SP>1</SP> ,  R<SP>11</SP> and R<SP>111</SP> are the same as R 1  and R 2  except that they cannot be H. The silicon ester may be copolymerized with another oxirane or an oxetane compound, and many examples are given. The catalyst may be an organo-aluminium compound which has preferably been chelated and/or reacted with water or an organo-  zinc or magnesium compound which has been reacted with a polyfunctional compound. Suitable active hydrogen compounds for converting the silicon ester groups to hydroxy groups are water, alcohols and acids. The final products have molecular weights above 50,000 and are insoluble in benzene. They may be amorphous or crystalline. They may be reacted through the hydroxy groups with compounds such as polyisocyanates, polyepoxides and aziridines, polyanhydrides, polyimides and phenol-, urea- or melamine-formaldehyde resins. Carboxy derivatives may also be obtained by reaction with esters of halocarboxylic acids or esters of the type of p-chloromethyl benzoic acid esters or with halonitriles followed by hydrolysis. The polymers may be compounded with stabilizers, plasticizers and with fillers, e.g. silica, asbestos, clay, carbon black and reactive silanes. The examples describe the preparation of polyglycidol and copolymers with ethylene oxide, propylene oxide, epichlorhydrin, butene-2-oxide and trimethylene oxide. Uses.-Flocculating agents, fibres, films, foams, binders, thickeners, protective colloids, oil-well drilling additives, starch modifiers, adhesives, textile sizes, detergent additives, coagulants.
Patent GB-1319332-A (GB)
Title: Balanced rotary plate valve
IPC: F16K1/22
Filed: 1970-09-10
Abstract: 1319332 Valves ANDREWS INDUSTRIES Inc 43446/70 [17 Sept 1969] Heading F2V A butterfly valve has a pressure-balanced closure plate whose entire periphery is spaced from the seat surface in the open condition, and the entire periphery is brought into compressive engagement with the seat surface in the closed condition. In Figs. 1 and 2, the closure-plate 20 and seat are elliptical, with the points of maximum extent in the direction of the stem (Y) axis offset from that axis in the direction of the transverse (X) axis. The S-plane containing the seat engaging line 21 of the plate 20 in the closed condition is inclined to the Y-axis and the seat is configured such that an arc described by each point on the plate periphery as it moves to the closed position makes an angle with the seat surface, thereby ensuring that each point can be compressed against the seat surface. In a modification (Fig. 7) the Y-axis is tilted, the S-plane arranged skew-wise and the valve seat is cylindrical but still of elliptical section. Fig. 13 is a modification of Fig. 7 in which the Y-axis is restored to the vertical and the end faces 34, 36 lie in skew planes parallel to the S-plane. The closure plate includes a sealing ring 46 which supplements the metal-to-metal contact between the plate periphery and the seat surface. An alternative non-circular configuration for the valve plate is shown in Fig. 15 where the S-plane is normal to the flow-way (Z) axis and the Y- axis is vertical. The periphery of the closure plate need not be planar, and either the seat or the closure plate can be deformable.
Patent GB-1165591-A (GB)
Title: Improvements relating to Thread Rolling Dies for Producing Gimlet Pointed Screws.
IPC: B21H3/06
Filed: 1967-09-26
Abstract: 1,165,591. Rolling threads. REED ROLLED THREAD DIE CO. 26 Sept., 1967 [27 Sept., 1966], No. 43657/67. Heading B3M. A thread rolling die which, together with a similar die, produces a thread on a gimlet pointed screw, includes a flat grooved face A, a flat outwardly inclined face B, and a twisted face F, G bounded by a lower edge of face B and the outer edge 20 of a recess E. The inclination of the face F, G varies from 22¢ degrees at edge 28 to 90 degrees at line 18. The wedge formation produced by the intersection of faces B and F, G serves to progressively form a gimlet point on the cylindrical shank of a screw blank and then screw a slug from the end of the blank (Figs. 4-8, not shown).
Patent GB-1513189-A (GB)
Title: Stand particularly a stand for a tree
IPC: A47G33/12
Filed: 1976-10-21
Abstract: 1513189 Stands J GIES 21 Oct 1976 [22 Oct 1975] 43743/76 Headings A4H and A4U [Also in Division A6] A stand, for a tree or sunshade, comprises a cylindrical socket 1 having a threaded sidewall 3 and a base-plate bottom 20, a plate 7 resting on the base-plate and having pairs of wall members 8, 9 and 10 thereupon, thrust blocks 4, 5 and 6 disposed for sliding movement in channels formed between the pairs of wall members, and an adjusting member 14 have a threaded cylinder 15 screwing into the socket 1 and an internal cone 17, so that when the adjusting member is screwed into the socket the core pushes the thrust blocks radially inwardly to grip a tree or sunshade placed centrally in the socket. A depression 21 may be provided in the base-plate 20 to receive water.
Patent GB-1131021-A (GB)
Title: Improvements in or relating to steering systems for marine vessels with particular reference to tugs
Inventor: CORLETT EWAN CHRISTIAN BREW
IPC: B63H25/38
Filed: 1964-10-27
Abstract: 1,131,021. Steering by rudders. HYDROCONIC Ltd. 27 Oct., 1965 [27 Oct., 1964], No. 43798/64. Heading B7V. A steering system for a marine vessel comprises a stern rudder for use when going ahead and a bow rudder for use when going astern. The stern rudder has a trailing edge flap which is automatically controlled so that whenever the main stern rudder blade turns from the fore and aft or straight ahead position the flap thereon turns through a greater angle.
Patent GB-1163944-A (GB)
Title: Coating Composition and use of same in Electrocoat Painting
IPC: C25D13/06
Filed: 1966-09-30
Abstract: 1,163,944. Resins based on acid, anhydride or ester/drying oil adducts. ASHLAND OIL & REFINING CO. 30 Sept., 1966 [30 Sept., 1965], No. 43877/66. Heading C3P. [Also in Division C7] A resin is prepared by heating an α,#- ethylenically unsaturated dicarboxylic acid, anhydride or half-ester thereof with a drying oil which may be modified by polymerization with an ethylenically unsaturated monomer, to form an adduct which is then heated with an aromatic primary or secondary amine until the product has the desired high viscosity. In examples: (1) a copolymer of linseed oil and cyclopentadiene forms an adduct with maleic anhydride and is then reacted with aniline and the product was reacted with diisopropanolamine and dissolved in water; and (2) and (8), as (1) using o-toluidine and methyl aniline, respectively, as the amine.
Patent GB-1491014-A (GB)
Title: Coating method using high solids water-thinnable compositions
IPC: C09D201/06
Filed: 1974-10-10
Abstract: 1491014 High solids aminoplast/polyol coating compositions PPG INDUSTRIES Inc 10 Oct 1974 [11 Oct 1973] 43881/74 Heading C3R A coating composition comprises (A) a hydroxy compound of average OH equivalent weight 40 to 500, containing no more than 2 alkylene oxide residues per OH group and having a room temperature water thinnability of at least 3 p.b.w. of water per 100 of (A), which is (i) a diol, triol or oligoester polyol, containing only C, H and O, (ii) a poly-hydroxy cyclic amide, oligoamide, oligurethane or oligourea, and/or (iii) a hydroxy acrylate or methacrylate, the oligomers being of M.W. at most 1000; (B) an aminoplast; and (C) a solvent of which at least 10 wt. per cent is water, (A) and (B) being unreacted, i.e. not heated together, and the solids forming at least 60 wt. per cent of the composition. There may be present a polymer polyol, which may form part of (A), or be different from (A), and in preferably a polyalkylene glycol. In Examples 1-85 various suitable polyols are prepared by reaction of: (1-18) phthalic and/or hexahydrophthalic, or adipic or succinic acid with ethylene and/or propylene and/or diethylene glycol, or neopentyl glycol, glycerol or hexylene glycol, and optionally urea and/or caprolactone, in molar ratios of 1 : 2 : 0 or 0À55-1À28; (19, 20) caprolactone with trimethylolpropane (1À4 or 3À6 : 1); (21-36) ethanolamine, diethanolamine or diethylene triamine with ethylene or propylene carbonate and optionally caprolactone (1 : 1 : 0 or 0À48-2À54); (37-46) hexylene-, trimethylhexylene-, isophorone- or xylylene-diisocyanate with ester diol and optionally propylene, dipropylene, butylene or dipropylene glycol (1 : 2-4); (47-49) diethylene triamine and caprolactone (1 : 3-9); (50-55) diethanolamine with adipic, azelaic or isophthalic acid and optionally caprolactone (2 : 1 : 0 or 0À38- 1.14); (56-68) tris-hydroxyethyl isocyanurate with caprolactone and/or dimethylolurea or with urea or with isophorone diisocyanate or with azelaic acid; (69-82) dihydroxyethyl dimethylhydrantoin with adipic, phthalic or isophthalic acid, caprolactone, or hexylene, trimethylhexylene or isophorone diisocyanate; (85-85) glycerol or ester diol with dimethylolurea and optionally urea or propylene glycol. In Examples 86-107 more such polyols are detailed, together with those from caprolactone and hydroxypropyl N-hydroxyethyl carbamate or trihydroxyethyl glycolamide; these or hydroxyethyl acrylate or a propylene glycol/polyoxytetramethylene glycol mixture are mixed with hexamethoxymethylmelamine in 4 : 5 to 2 : 1 wt. ratio, with 2-50 p.h.r. of water and optionally 3-70 p.h.r. of aqueous ethanol, and optionally a toluenesulphonic acid hardener and TiO 2  pigment, and applied to a steel substrate.
Patent GB-1470363-A (GB)
Title: Crystallizable glasses and glass-ceramics
IPC: H01B3/08
Filed: 1974-04-09
Abstract: 1470363 Thermally crystallizable glass OWENS-ILLINOIS Inc 9 April 1974 44003/76 Divided out of 1469943 Heading C1M A thermally crystallizable glass comprises: GeO 2  18-40 mole per cent; Nb 2 O 5 +Ta 2 O 5  25-45 mole per cent; Na 2 O + (K 2 O and/or Li 2 O) 25-45 mole per cent, where Ta 2 O 5  may be 0, but if present is in an amount such that the mole ratio Nb 2 O 5  : Ta 2 O 5  is 1-3 : 1, the mole ratio Na 2 O : (K 2 O+Li 2 O) is 1-3 : 1, and the mole ratio (total alkali metal oxides): (Nb 2 O 5  + Ta 2 O 5 ) is 0À7-1À4 : 1, the above oxides constituting at least 90% by weight of the glass. The glass may be crystallized to form a glassceramic preferably having a dielectric constant more than 150 and a dissipation factor less than 4%. In examples glasses are crystallized to a transparent glass-ceramic by heating to 975-1200‹ F. for up to 2 hours, or by heating to 1050-1325‹ F. for “-2 hours and then to 1125-1375‹ F. for ¢-2 hours, or crystallized to an opaque glass-ceramic by heating to 1250- 1700‹ F. for “-8 hours, or by heating to 1125- 1275‹ F. for up to 2 hours and then to 1075- 1600‹ F. for “-¢ hours.
Patent GB-1483818-A (GB)
Title: Flowmeters
IPC: G01P5/01
Filed: 1974-10-10
Abstract: 1483818 Measuring fluid flow electrically FISCHER & PORTER LTD 10 Oct 1974 44025/74 Heading G1N The claims and description are identical with those of Specification 1483817.
Patent GB-1193348-A (GB)
Title: Xerographic Process and Apparatus
IPC: G03G5/043
Filed: 1967-09-28
Abstract: 1,193,348. Electrophotography. RANK XEROX Ltd. 28 Sept., 1967 [3 Oct., 1966], No. 44124/67. Heading H1K. [Also in Division C7] A photo-conductive member comprises successive layers of vitreous selenium vitreous selenium-tellurium and vitreous arsenic-selenium alloy. The member may be built up by coevaporation of the components on to a brass, aluminium or steel sheet or web. Alternatively, the support may be paper or plastics coated with Al or Cu 2 I 2  or glass coated with Cr or SnO. In one embodiment the member may be selfsupporting. The selenium layer may contain up to 0À5% As and 1% halogen, whilst the preferred compositions for the alloy layers are up to 50 wt. per cent Te and up to 50 wt. per cent As with optionally 1 wt. per cent I 2 .
Patent GB-1284623-A (GB)
Title: Method of culturing corynebacteria, and nocardia and arthrobacter bacteria
IPC: C12N1/30
Filed: 1970-09-16
Abstract: 1284623 Cultivating bacteria on gaseous hydrocarbons NIPPON OIL CO Ltd 16 Sept 1970 [16 Sept 1969] 44246/70 Heading C6F A method of preparing pretein-containing cells involves inoculating a culture medium comprising a nitrogen source and a carbon source which comprises a normally gaseous saturated hydrocarbon having 2 to 4 carbon atoms, with one of the following micro-organisms: Corynebacterium fujiokense (ATCC 21496) Nocardia neoopaca(ATCC 21499) Arthrobacter rubellus (ATCC 21495) Arthrobacter petroleophagus (ATCC 21494) culturing the micro-organism cells under aerobic conditions, separating the cells from the culture medium and (optionally) freeze-drying or spraydrying them. The carbon source may consist of at least 50 per cent by weight of ethane, propane and/or n-butane and a minor amount of other hydrocarbons such as olefins and iso-paraffins. The C 4  fraction remaining after recovering ethylene and butadiene from a cracked product of naphtha or a gaseous mixture of liquefied petroleum gas consisting predominantly of propane and butane may be employed.
Patent GB-1074348-A (GB)
Title: Grids for thermionic valves
Inventor: THOMSON BERNARD
IPC: H01J19/30
Filed: 1964-10-30
Abstract: 1,074,348. Electrode materials and processing. STANDARD TELEPHONES & CABLES Ltd. Oct. 30, 1964, No. 44314/64. Heading H1D. A grid for a thermionic valve comprises a metal base coated with a barrier layer of a metal carbide, applied as such to the base and sintered without melting, and which does not react with the base, and a surface layer of carbon and/or zirconium for inhibiting grid emission applied before assembly of the grid in the valve. The base metal may be Mo, Ta, W, Nb or their alloys, e.g. Mo bars joined at their ends to a pair of Ta bands. The barrier layer should be at least 25 microns thick, and may comprise carbides of Ti, V, Nb, Ta, Cr, W, Th or U, but is preferably of zirconium carbide applied as such by spraying, dipping or electrophoresis, and sintered to the metal base without melting. A carbon surface layer may be applied by spraying on colloidal graphite or amorphous carbon, or by pyrolytic decomposition of a hydrocarbon, e.g. heptane vapour. Alternatively, a zirconium surface layer may be applied as the metal or as the metal hydride by spraying, dipping or electrophoresis, or a mixture of zirconium and carbon may be applied by spraying or dipping using a suspension containing zirconium hydride and colloidal graphite. Specific examples are given. The grid may be outgassed prior to assembly.
Patent GB-1114196-A (GB)
Title: Improvements in or relating to the manufacture of sintered glass bodies
IPC: C03C3/076
Filed: 1966-10-05
Abstract: Process for the manufacture of a sintered glass body from an alkali or alkaline-earth metal ion containing glass by press moulding the body from the powdered glass and heating it until sintering takes place, wherein the powdered glass is washed prior to pressing in an aqueous acid solution.  A weak acid such as acetic acid is preferred. missing page 164
Patent GB-1500308-A (GB)
Title: Method of removing gaseous and solid contaminants from an air stream
IPC: B01D47/18
Filed: 1975-10-30
Abstract: 1500308 Centrifugal separation; separating particles from gas OWENS-CORNING FIBERGLAS CORP 30 Oct 1975 [12 Dec 1974] 44997/75 Headings B2P and BIT In a method of removing gaseous and solid contaminants from a stream of process air evolved during a glass wool product-forming process in which the air flows successively through a drop box 27, a centrifugal fan 30 and a fall-out chamber 32 to be exhausted through a stack 34, process water is (a) supplied from a common reservoir 24 to the drop box 27 and to the inlet 23 of the fan 30 and (b) drained to the reservoir from the drop box, the shroud 50 of the fan and the chamber 32, and steps (a) and (b) are repeated by recirculating the process water. Molten glass from a glass melting and refining tank 12 is received in a forehearth 13 and passes through a centrifugal former 14 from which it falls as a stream of glass fibre 15 on to a foraminous belt 16. During their free fall the fibres are sprayed with a curable organic resin binder, e.g. phenol formaldehyde resin, issuing from nozzles 20 connected to a supply hopper 21 through a conduit 22 along which waste water 23 from the reservoir 24 is pumped. The belt conveys the fibre and resin mixture through an oven 18 where the resin is cured to bind the fibres into a wool-like product. An air stream induced by the fan 30 from the former 14, the nozzles 20 and the surrounding factory space and containing suspended solid and liquid particles and volatile gaseous impurities passes through a receptacle 25 and a conduit 26 into a drop-box 27 where it is sprayed with wash water, pumped from the reservoir 24 through a conduit 40 and a manifold 41, to remove relatively large particles from the air stream and to dissolve the gaseous impurities. The air stream containing fine particles in suspension then passes through a conduit 28 to the fan venturi-type inlet 53 into which wash water is sprayed by means of a nozzle 55 fed from the reservoir 24 via a conduit 56 whereby the particles are agglomerated and coalesced by impact between the particles and the water droplets and between the particles and the wet surfaces of the fan backplate 52 and blades 51, and are separated out centrifugally with water droplets against the wetted inner surface of the fan shroud 50. The bottom of the shroud is connected by means of a conduit to the drop-box 27 and the latter is connected to the reservoir 24 by means of a drain conduit 43. Any wetted or agglomerated particles and water droplets carried in the air stream discharged from the fan via a conduit 31 are removed in the fall out chamber 32 by slowing of the air stream and/or by deflection vanes 33 mounted therein and are discharged through a conduit 35 into the reservoir 24.
Patent GB-1089930-A (GB)
Title: Method of manufacturing electrical capacitors
Inventor: COOK RONALD JOHN
IPC: H01G4/224
Filed: 1965-10-25
Abstract: 1,089,930. Capacitors. LONDON ELECTRICAL MANUFACTURING CO. Ltd. Aug. 16, 1966 [Oct. 25, 1965], No. 45013/65. Heading H1M. Bore 25 remaining in wound capacitor 15 after removal of the winding mandrel is sealed against subsequent entry of solder by a disc punched into the end of the bore from metal tape 18 using punch 19 and die 20. Both ends may be treated at once, and the drawing shows one disc 24 in position. The disc is held on the end of the punch by vacuum while being pushed in, and a slight positive pressure is applied when the punch is being withdrawn. The projecting ends 16, 17 of the staggered metal, e.g. aluminium foils forming the capacitor electrodes are crushed down on to the ends of the rolls, and the ends are coated, e.g. by abrasion soldering, using aluminium alloy solder containing a scuffing agent, namely undissolved zinc crystals. A length of adhesive synthetic plastics tape 29, wider than the length of the roll, is wrapped around the roll and copper leads 30, 31 are dipped in hot solder and stuck to the coated ends of the roll while hot. Finally the cup-like ends formed by the plastics jacket are filled with molten plastics material which sets on cooling.
Patent GB-948902-A (GB)
Title: Electric connecting device
IPC: H01R13/20
Filed: 1962-11-30
Abstract: 948,902. Electric couplings. W. FISCHER. Nov. 30, 1962 [Dec. 2, 1961], No. 45300/62. Heading H2E. A plug and socket are prevented from parting by a collar which expands under the pressure from an extension mounted on one of the members to grip the other. As shown in Fig. 1, tubular members 3 and 14 each carry one male and one female connection 6, 7 and the expanding collar 29 is mounted with its upper end around member 14 and its lower end inside lower member 3. The upper member 14 carries a ramp 34 which engages with the collar so that any tension in the cables forces the collar, which is slotted so as to form elastic tongues 32, to expand and grip member 3. On the other hand if the collar itself is gripped the plug and socket disengage readily. A supple packing ring 38 is inserted to make the device water-tight and it is advantageous to make a joint 41 in a glue such as " Araldite " (Registered Trade Mark) between the electric conductor extensions 8 and 9. Tubular members 3 and 14 as well as socket 29 and cap 23 are in metal and 5 and 15 are blocks of insulating material. A further elastic ring 26, which swells when cap 23 is tightened on to member 14, fixes conductors (not shown) in place. As a variation, collar 29 can be secured, with a certain amount of axial play, to member 3, and also members 3 and 14 and collar 29 can be formed in insulating material for example in plastics material and instead of having circular section they can have polygonal, square, rectangular or elliptical section.