baber/WOPTO huggingface dataset:
Patent GB-569779-A (GB)
Title: Improvements in or relating to the manufacture of heat exchange devices
IPC: F28F21/08
Filed: 1942-10-26
Abstract: 569,779. Making heat exchangers. COOK, M., DAVIS, E., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Oct. 26, 1942, No. 14985. [Classes 83 (ii) and 83 (iv)] Soldering.-Heat exchangers such as intercoolers, radiators, oil coolers for internal combustion engines, are made by forming the parts of metal sheet, strip, tube or like with an adherent coating of a malleable silver-copper alloy containing essentially 20-92 per cent of silver and 8-80 per cent of copper, the parts being then assembled in intimate contact and heated in a non-oxidising or reducing atmosphere to a temperature above 780‹ C. so as to bond the contacting parts together. The alloy may contain up to 2 per cent of one or more additional metals such as zinc which do not adversely affect the malleability of the alloy. The non-oxidising or reducing atmosphere may comprise nitrogen or hydrogen or a mixture thereof, or dissociated or cracked or cracked and burnt ammonia, or carbon dioxide or burnt coal gas previously purified. The heating may be effected in a furnace controlled at the required temperature and may be completed in 2 to 10 minutes, the parts being held in place in a jig or by the method described in Specification 568,567. The thickness of the layer of silver-copper alloy should not exceed 0.0005 inch, is preferably of the order of 0.0001-0.00025 inch and may be applied by hot rolling or spraying with subsequent hot or cold rolling if desired, or may be effected as described in Specification 569,784. With a sheet copper heat exchanger the silver-copper alloy should contain not less than 40 per cent of silver and the bonding operation should be effected at a temperature not higher than 900‹ C. Where sheet steel or other metal is employed such as nickel or a nickel alloy melting at temperatures substantially above 1000‹ C., the silver content of the alloy may be as low as 20 per cent and the bonding temperature may be about 1000‹ C. Cupro-nickel alloy sheet containing 70 per cent of copper and 30 per cent of nickel is coated by hot rolling with a layer 0.002 inch thick of a silver copper alloy containing 35 per cent of silver and 65 per cent of copper which is then reduced by cold rolling to 0.00025 inch. The parts of the heat exchanger formed from the cold rolled coated metal are assembled and heated in intimate contact at 950‹ C. in an atmosphere of cracked ammonia for 2-10 minutes to effect the bonding. In another example parts made from sheet copper coated on both sides with a layer 0.00025 inch thick of a silver copper alloy containing 72 per cent of silver and 28 per cent of copper by the process described in Specification 569,784 are assembled and heated in intimate contact at a temperature of 800‹ C. in an atmosphere of burnt town's gas to effect the bonding.
Patent GB-910945-A (GB)
Title: Improvements in storing liquefied petroleum gases
IPC: F17D1/02
Filed: 1961-04-26
Abstract: 910,945. Storing liquefied gases. CHICAGO BRIDGE & IRON CO. April 26, 1961 [June 21, 1960], No. 15008/61. Class 8(2). A storage vessel 11 is intermittently charged with liquefied gas e.g., propane at atmospheric temperature and superatmospheric pressure e.g., 133 p.s.i. which conditions are maintained constant by withdrawing effluent through a line 12, compressing at 13, condensing at 14 and flash expanding through a valve 15 back to the vessel 11, and liquefied gas is withdrawn through valve controlled line 21 at a rate much less than the changing rate, and is flash-expanded through a valve 52 into a heat insulated storage tank 20 operating at just above atmospheric pressure and at below the boiling point of the gas. A flash evaporator 24 is included in the transfer line 21 and effluent therefrom traverses a line 26 to the second stage of a compressor 25 where it is joined by effluent from the tank 20 having traversed a line 29 and the first stage of the compressor. The combined gas streams are condensed at 31 and a first portion is returned through a heat exchanger 34 where it serves to warm liquefied gas being forced by a pump 37 into a consumer line whilst the remainder traverses a line 32 and is returned to the. evaporator 24. Off-peak storage tanks 40 are connected in parallel with tank 20 and effluent therefrom in lines 42, 43 is joined by effluent in a line 41 of tank 20 and is compressed at 46,  49, condensed at 47, 50 and the liquid fed into the evaporator 24. Rigid foam polyurethane is used to insulate the tanks 20, 40 which are provided with vents 54 and relief valves 55.
Patent GB-294868-A (GB)
Title: Improvements in the solvent treatment of copper ores
IPC: C22B15/00
Filed: 1928-05-22
Abstract: 294,868. Anglo-American Corporation of South Africa, Ltd. Dec. 7, 1927, [Convention date]. Ammonium compounds containing metals.- Copper is extracted from cupiferous ores &c. by means of an ammoniacal solvent, such as a solution of ammonium carbonate, by a process whereby the extraction can be carried out with apparatus of compact form: without exposure of the solvent solution and which avoids undue dilution of the solution. The oupiferous material is wet ground to a slime pulp, of which the greater part will pass through a 200 mesh screen. The pulp is then de-watered, conveniently by filtration under pressure and preferably also by forcing air through the cake formed during the filtering operation. The de-watered pulp, containing less than 20 per cent of water, is then treated by a solution of cupric ammonium carbonate by forcing the solvent through the cake in the filter-press. Loss of ammonia is minimized owing to the solution being enclosed. When the solvent action is completed, the residual solution is displaced by means of air under pressure, or a wash liquid or both and the cake treated with steam to recover ammonia. The copper may be recovered from the solution by any suitable means.
Patent GB-733270-A (GB)
Title: Improvements in and relating to fuel injection pumps
Inventor: HUMBER JOHN NICHOLAS
IPC: F02M41/14
Filed: 1953-05-29
Abstract: 733,270. Fuel-injection pumps. AMERICAN BOSCH CORPORATION. May 29, 1953, No. 15046/53. Class 102 (1). A fuel-injection pump comprises a rotor 28 in which is formed a number of cylinder bores 32a containing pairs of opposed pump pistons 33 carrying rollers 35 that engage lobes on a cam ring 31; the pistons are reciprocated in unison. A passage 36 communicates with the pump chamber and extends along the rotor to a delivery valve 22, the outlet of which is connected by passages 25, 25a to an annular groove 37 in the rotor from which extends an axial groove 38 which co-operates with a number of outlets 17 to distribute the fuel to the engine cylinders. Two series of radial ports 39, 40 extend from the passage 36 and co-operate with openings 41, 42 respectively in sleeves 43, 44. Rotation of sleeve 43 controls the timing of the beginning of injection and rotation of sleeve 44 the end of injection and thus the quantity delivered; the 'sleeves may be adjusted separately or in unison. Figs. 2, 4 show an arrangement in which the sleeve 43 is adjusted by an eccentric pin on a shaft 46 rotated by a lever 45. The shaft 46 carries a cam 47 which is engaged by a roller 48 on a lever 49 pivoted on a fixed pin 50. The other end of the lever 49 has an adjustable screw 51 which engages a lever 52, loaded by a spring 53, carrying an eccentric pin to adjust the sleeve 44.
Patent GB-529073-A (GB)
Title: Improvements relating to means for stopping or closing gas mains
IPC: F16K7/10
Filed: 1939-05-20
Abstract: 529,073. Stopping gas mains. MILLNER, F., and WILSON GAS METERS, Ltd., G. May 20, 1939, No. 15050. [Class 99 (ii)] A stand-pipe b extends from a gas main to a surface box d and is adapted to receive a stopper comprising an inflatable bag h and a flexible tube i containing a rigid tube secured to the bottom of the bag at k and having perforations f. The tubes are fitted at the top with a gauge l, cock m and a plug o which fits into the end of the stand-pipe.
Patent GB-129324-A (GB)
Title: Improvements in and relating to Machines for the Manufacture of Glass Wool.
Inventor: HOLMES ARTHUR RONALD
IPC: C03B37/095
Filed: 1917-10-17
Abstract: 129,324. Holmes, A. R. Oct. 17, 1917. Drawing. - Relates to apparatus for drawing glass for making glass wool. The glass is melted in a crucible 3, Fig. 3, composed of a tungsten &c. alloy of high resistance so that it can be heated by the passage of an electric current through it. The glass is introduced through the opening 5 and, when sufficiently heated, is drawn out through holes 6 by a drum, Fig. 1. The drum is formed with a series of recessed bridge-pieces 10, Figs. 1 and 2, which are carried by the spokes 9. Reinforcing wires 11 are wound round the drum in the recesses and are covered by a sheet of canvas 12. The periphery of the drum is sufficiently fiexible to yield as the glass contracts.
Patent GB-759802-A (GB)
Title: Improvements in or relating to respirator
IPC: A62B23/02
Filed: 1954-05-21
Abstract: 759,802. Respiratory appliances. LEWIS, H.B. May 21,1954, No. 15098/54. Class 81(2). A form of connection between a face mask and a filter member comprises a tubular member forming part of or attached to one of these two components and passing into an aperture in the other with the interposition of a resilient sealing member. The connection is described as applied to a mask associated with a dust filter. The filter 41, Fig. 2, is enclosed in a casing II, the rear wall 20 of which carries a tubular member 22, which is sealed in an aperture 19 in the face mask 10 by means of a rubber annulus 23. The filter element is described and claimed in Specification 759,828.
Patent GB-326099-A (GB)
Title: Improvements in locking devices for lift and like gates or doors
IPC: B66B13/20
Filed: 1929-05-15
Abstract: 326,099. Fothergill, J. May 15, 1929. Lift doors, locking and unlocking.-To prevent tampering with the well door of a lift &c. the door bolt is provided with a double cam shaped end adapted to operate two interconnected sliding catches in the lock. The end of the bolt 5 is provided with a slot x forming cam shaped surfaces adapted to engage rollers r<1> on the lower ends of two catches b<1>, b<2> in the lock casing. The catches have a lost motion connection formed by a two-armed lever f mounted on a pivot h in the casing. The catch b<1> is normally pressed downwards by a spring g and the catch b<2> carries one member d of a switch c<1> in the control circuit. When the door is closed the catch b<1> after rising drops into the slot and the catch b<2> is raised so that the switch is closed and by means of the lever f the catch b<1> is held in position, a spring- pressed locking arm j engaging a notch b<3> in the catch b<2>. On the arrival of the cage at the landing a ramp t on the cage rocks an arm m on the shaft e carrying the locking arm j and so releases the arm. Specifications 6967/12, 3062/15, and 242,144 are referred to.
Patent GB-120378-A (GB)
Title: Improvements in or relating to the Manufacture of Concentrated Nitric Acid.
IPC: C01B21/26
Filed: 1918-09-19
Abstract: 120,378. Norsk Hydro - Elektrisk Kvaelstofaktieselskab. Oct. 30, 1917, [Convention date]. Nitric acid.-The production of concentrated nitric acid from nitrogen peroxide is effected by passing the gas together with oxygen and water or dilute nitric acid under pressure through a series of reaction vessels so arranged that the current of oxygen passes in the same direction as the liquid through each individual reaction vessel, while the oxygen and liquid pass in opposite directions through the apparatus as a whole. The process may be carried out at a pressure of 10 atmospheres. Apparatus for use in carrying the process into effect is described. The Specification as open to inspection under Sect. 91 (3) (a) states also that the process can be carried out at 70‹ C., and refers to the use of nitrogen oxides in general. This subject-matter does not appear in the Specification as accepted.
Patent GB-695638-A (GB)
Title: Apparatus for determining the condition of water as regards its content of predetermined types of impurities
IPC: G01N21/77
Filed: 1949-04-13
Abstract: 695,638. Photo-electric water testing. FILTRATORS, Ltd., and STREATFIELD, E. L. June 29, 1950 [April 13, 1949; Aug. 12, 1949], Nos. 15354/50 (divided out of 695,623) and 20985/49. Drawings to Specification. Class 40 (iii). In apparatus for determining the content of predetermined impurities in water, the latter is continuously or intermittently sampled and divided into two parts, one of which is delivered to a mixing chamber together with a measured quantity of a reagent causing a colour change or precipitation in accordance with the content of the impurity to be estimated and the mixture is intermittently fed to a cell through which a light source illuminates a photo-cell, while the other part is delivered to a cell through which a similar photo-cell is illuminated from the same source. The amplified photo-cell outputs differentially operate indicating and/or control apparatus in response to the relative variations of the light transmitted by the two cells, according to the impurity content. The apparatus is constructed identically with that described in Specification 695,623, which is referred to, but the reagent may be Wanklyn soap solution or ammonium ferrocyanide for the estimation of hardness. The first Provisional Specification describes the use of Nessler's solution as a reagent for ammonia.
Patent GB-806535-A (GB)
Title: Fungicidal compositions
IPC: A01N57/10
Filed: 1956-05-17
Abstract: Dibutyltin diacetylacetonate is prepared by mixing acetylacetone and dibutyltin dichloride in substantially 2 : 1 molar proportion at room temperature in dilute ammonium hydroxide solution.  Similarly triphenyltin cyclohexanoate is prepared by reacting triphenyltin bromide with cyclohexanone at room temperature in aqueous sodium carbonate.  Di-butyltin (dimethylcyclohexyl dithiophosphate) is prepared by mixing dibutyltin dichloride and potassium dimethylcyclohexyl dithiophosphate in petroleum ether, heating under reflux, filtering, distilling the filtrate and leaving the dibutyltin di(dimethylcyclodithiophosphate) as a residue.  Dibutyltin dibutylxanthate is prepared by mixing dibutyltin dichloride in methanol and potassium n-butylxanthate and separating the oil layer distilling and leaving the dibutyltin dibutylxanthate as a residue.ALSO:A fungicidal composition comprises a conditioning agent and as a principal active ingredient an organotin salt or ester containing 2 to 3 organo groups preferably substituted or unsubstituted hydrocarbon groups such as alkyl, e.g. containing 1-16 carbon atoms, aryl, e.g. containing 6-10 carbon atoms and alkenyl radicals.  The anionic portion of the active ingredient can be either inorganic such as cyanide, halogen, amide, sulphate, nitrate and carbonate, or organic, e.g. derived from aliphatic, aromatic or heterocyclic amines or from an alcohol, phenol, carboxylic acid, mercaptan, ketone, an active methylene compound such as an ester of malonic acid, a phosphorus acid of either tri or pentavalent phosphorus, including sulphur analogues, an amide, a thioamide, a carbamic acid or a thiocarbamic acid, a xanthic acid.  The conditioning agents are the usual pest control adjuvants, extenders, modifiers, dispersing agents, surface-active agents, and oil-water emulsion, solid carriers such as talc, pyrophyllite, attaclay, kieselguhr, chalk, diatomaceous earth and calcium carbonate.  Inert carriers such as soya bean flour, sulphur, mica and talc or humus may also be incorporated.
Patent GB-872071-A (GB)
Title: Improvements in or relating to electrical capacitors
Inventor: ODELL NORMAN FRANCIS
IPC: H01G2/06
Filed: 1959-05-05
Abstract: 872,071. Capacitors. HUNT (CAPACITORS) Ltd., A. H. April 28, 1960 [May 5, 1959], No. 15421/59. Class 37. A foil or metallized roll capacitor having axially projecting opposed leads 12, 13 (Fig. 1), is enclosed in a moulded tubular thermoplastic casing 11, and lead 12 is bent round the casing exterior to project in the same direction as lead 13 through a hollow rib 15 formed on an enlarged rim 14 of the casing formed with three symmetrical projecting spacers 16, whereby the capacitor assembly is adapted for connection into a printed circuit. In a modification (Fig. 2, not shown), the casing is of uniform diameter formed with a hollow rib for the bent lead and an upstanding ring for seating on a printed circuit panel. The casing may be pressure-moulded round a standard capacitor enclosed in similar thermoplastic material, using a two-part cylindrical mould with holes in its end wall locating the terminal leads. The Provisional Specification mentions polyethylene, nylon, or methyl methacrylate as materials for the moulded casing and extends the latter to components other than capacitors.
Patent GB-909133-A (GB)
Title: Improvements in brakes and clutches
Inventor: BUTLER HENRY JAMES
IPC: F16D13/75
Filed: 1958-05-15
Abstract: 909,133. Disc brakes. DUNLOP RUBBER CO. Ltd. April 28, 1959 [May 15, 1958], No. 15590/58. Class 103 (1). [Also in Group XXIV] A brake comprises a friction pad assembly on each side of rotatable member, mechanism including a connecting rod between the two assemblies, for moving the assemblies against the member, and wear compensating means which also shortens the effective length of the connecting rod. In the embodiment shown, a disc brake includes pads 5 on backing plates 2, 3, pivoted to a fixed member and moved against disc by a lever 6, pivoted at 8 to plate 3, and a connecting rod comprising a two-start bolt 12 screwed, at one end, into a sleeve 9 carried by the lever 6, and fixed at the other end to plate 2. A four-start bolt 14, interconnecting plates 2, 3, is fixed to plate 2 by pin 16 and passes through an aperture in plate 3; a nut 17 on bolt 14 seats on plate 3, has teeth 18 engaging teeth 11 on sleeve 9, and is engaged by a spring 20 tending to rotate it on to bolt 14. A rod 22 seated in recess 23 in plate 2, Fig. 4, passes through a counterbored aperture in plate 3 ; a housing 25 fixed to the plate 3 holds a sleeve 24 and spring 26 in the aperture and houses a coiled spring 27 frictionally engaging the rod 22. On braking, the rod 22 and spring 27 compress spring 26 until sleeve 24 abuts the plate 2 when normal brake clearance has been taken up. If the pads 5 have worn, the rod 22 is forced through spring 27 and the brakes applied. On brake release, spring 26 releases the brake through sleeve 24 and rod 22, and due to resetting of the brake clearance the nut 17 will be moved away from plate 3; spring 20 rotates the nut to take up this slack, the nut rotating sleeve 9 to correspondingly shorten the connecting link 9, 12.
Patent GB-581266-A (GB)
Title: Improvements in and relating to louvre wall ventilators
IPC: F24F13/10
Filed: 1944-08-16
Abstract: 581,266. Louvre wall ventilators. GREENWOODS & AIRVAC VENTILATING CO., Ltd., HUGHES, B. D., and FORD, E. L. Aug. 16,1944, No. 15653. [Class 137] A louvre ventilator comprises a wall box 1, containing fixed louvres 2, one or more sliding elements 3, 4, 5 with shutter plates 7 rigidly secured thereto, arranged to bear on and slide against one edge 2* of the fixed louvre, and means for moving the sliding elements and thence the shutter plates towards or away from the fixed louvres for the purpose of opening or closing the apertures between them. In the form shown in Figs. 1 and 2, the fixed louvres 2 are angularly disposed at the front of the box and the apertures between them are closed by pulling the rod 8 attached to the middle of the sliding element 5, causing the horizontally supported shutter plates 7 to move. The plates 7 may be formed with a projecting ridge 7* to engage the rib 12 formed in the fixed louvres 2. The fixed louvres can be of inverted V-form and fixed in the middle of the box, the shutter plates closing the space between the outer legs of the Vees. In a further modification, the plates move in a plane at right angles to the fixed louvres, a cord secured to the sliding elements effecting the movement. The cord may be replaced by a lever, whose rear end is shaped to engage beneath the lower edge of one of the shutter plates.
Patent GB-1276945-A (GB)
Title: Olefin copolymer compositions
Inventor: CAMELI NAZZARENO
IPC: C08L23/16
Filed: 1970-04-02
Abstract: 1276945 Olefin copolymer compositions MONTECATINI EDISON SpA 2 April 1970 [2 April 1969] 15784/70 Heading C3P Sulphur vulcanizable compositions comprise (1) an ethylene/propylene/1,3-butadiene copolymer and (2) an ethylene/propylene/dicyclopentadiene copolymer. The copolymers may be blended in solution or by milling. In examples copolymer mixtures are blended with carbon black, extender oil, stearic acid, zinc oxide, mercaptobenzothiazole, tetramethyl thiuram monosulphide and sulphur and vulcanized.
Patent GB-631315-A (GB)
Title: Improvements in or relating to tickets, ticket supply strips therefor and machine for issuing the same
IPC: G07B5/06
Filed: 1946-05-24
Abstract: 631,315. Tickets. BELL PUNCH CO., Ltd. May 24, 1946, No. 15799. Convention date, May 25, 1945. [Class 73] [Also in Group XIX] A ticket strip for use in a ticket issuing machine has two differentiated longitudinal areas. The areas may be differentiated by width and/or colour and the ticket is provided with feed holes, Fig. 4, so disposed that the areas of the strip or of a ticket obtained therefrom are distinguishable by touch. In other examples, Fig. 7 and Fig. 9, the ticket strip is provided with an additional row of holes or notches respectively to render the longitudinal areas more easily distinguishable by touch. The ticket strip is longitdinally or longitudinally and transversely perforated as it is fed through the machine by the means disclosed in Figs. 3 and 2 (not shown) respectively.
Patent GB-1182564-A (GB)
Title: Improved Seal Assembly
IPC: F16J15/34
Filed: 1968-04-02
Abstract: 1,182,564. Bearing seals. MASSEY-FERGUSON SERVICES N.V. 2 April, 1968 [20 May, 1967], No. 15819/68. Heading F2A. In a seal for a bearing having two relatively rotatable annular members having face-to-face sealing contact surfaces, one of the members is adapted to be mounted in the bearing for constrained rocking movement about a point on the axis of relative rotation between the members. One embodiment of the invention is described in which a seal is provided for the bearing of the roller assembly of a crawler track vehicle running gear. A shaft 1 having a flange 2 is supported in an end cover 3 and has a flat portion 4 which serves to locate it in a vehicle chassis. Lubricant is supplied yia passages 5 and 6 to a bearing 7 between the shaft and a roller 8, attached to a flanged roller 9 which rides on the crawler track. A rubber 0-ring 10 is located in a groove 11 to prevent entry of dirt into the bearing. Two annular sealing members 16 and 17 have a sealing interface 18. A larger rubber 0-ring 15 is situated on the tapered surface 19 of member 16 and this also abuts the tapered surface 13 in the roller 8. The radially outer peripheral surface 20 of member 17 is formed as a part-spherical surface having its centre 21 on the axis of the shaft and in the plane of the interface 18. The surface 22 of the cover 3 is formed with a surface complementary to that of member 17 so that relative motion between the cover and sealing member is facilitated. A peg 26 projects from the cover 3 and engages in a radial groove 27 in 17 to prevent relative rotation between the end cover and the sealing member. The action of the 0-ring 15 is such that effective sealing is maintained across the interface 18. If misalignment of the bearing occurs during assembly or use, member 17 will rock slightly to counteract the misalignment, and preserve even wear across the interface 18.
Patent GB-658586-A (GB)
Title: Improvements in looking glasses
IPC: A45D42/08
Filed: 1949-06-14
Abstract: 658,586. Looking glasses GLACERIES DE LA SAMBRE SO( ANON. June 14, 1949, No. 1582 Convention date, July 5, 1948. [Class 52 (iv)] The front face of a looking gla is plane from edge to edge and the rear face, after silvering, is bevelle b to substantially the full thickne of the glass and may be coated with coloured varnish d.