baber/WOPTO huggingface dataset:
Patent GB-661166-A (GB)
Title: Improvements in or relating to a method of moulding plastic materials
IPC: C08L77/00
Filed: 1947-08-06
Abstract: 661,166. Injection-moulding. STEVENS, A. H. (Polymer Corporation). Aug. 6, 1947, No. 21389/47. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 1, 1948.] Class 87(ii) [Also in Group XI] Molten synthetic linear polyamide material is injected into a mould preheated to a temperature between 350‹F. and 480‹F. The polyamide material in a removable container 21 is heated by immersion in a salt bath or by dielectric heating and is then forced, by means of a plunger 25, out of the container through a rupturable bottom 22, 24, 23 into the mould. Electric hot plates 16, 17 or liquid or steam heating means may be provided for heating and for controlling the cooling of the mould. The mould may comprise a top plate 9, a bottom plate 8 and a circular wall 10. The top plate 9, and the hot plate 17, may be secured to fixed posts 18. The bottom plate 8 and the hot plate 16 may be secured to a hydraulically operated supporting plate 11. Thus the mould is automatically opened when the plate 11 is lowered and automatic knockouts may be used to eject the moulded article. In a modification, Fig. 2, several containers 35 may be used each leading through holes 36 to a mould 31 having a bottom 32 which is forced downwardly from position 32a, as material is injected into the mould. The rupturable diaphragm 24 may be made of nickel or a high-melting point polymer, e.g. polytetrafluoroethylene. One or two plugs 22, 23 may be used, preferably made of a metal (copper) having a greater co-efficient of expansion than the metal (steel) of the container. The plugs may also be made of polytetrafluoroethylene. The plunger 25 and the mould bottom 32 are also preferably made of material which expands more than their surrounding container and mould respectively. A heat stable grease, e.g. an organo-silicon oxide compound, may be used between the plugs 22, 23 or the plunger 25 and the container to assist in excluding air from the plastic material. When high-frequency heating is used, the container may be made of a plastic material such as polytetrafluoroethylene or a ceramic material such as steatite. The dielectric loss factor of the container should be considerably less than that of the moulding material. The heating electrodes may be curved to the radius of the container, and they may be placed in contact with the container. The container is located within a metal tube, after heating The Specification as open to inspection under Sect. 91 comprises also the moulding of polyvinylidene chloride and various polymers and copolymers of ethylene. When polyvinylidene chloride is used the container may be made of nickel and the plugs of magnesium. This subject-matter does not appear in the Specification as accepted.
Patent GB-574142-A (GB)
Title: Domestic water heaters
IPC: F24D3/02
Filed: 1943-12-21
Abstract: 574,142. Hot-water boilers. SMITH, W. H. Dec. 21, 1943, No. 21414. [Class 64 (i)] [Also in Group XII] A domestic water heater with mechanical means for pumping the water through the pipe system has means for producing a forced draught of air through the fuel and thermostatically operated means controlling the means for producing the forced draught in accordance with the temperature of the water at a selected point in the circulatory system. A blower producing the forced draught operates when the water temperature falls to a predetermined level and ceases to operate when the water temperature rises to a predetermined level. Water is supplied to the boiler 1 by a pump 4 driven by an electric motor 5 which also drives a fan 12 through a clutch 11 electrically controlled by a thermostat 7 connected by a pipe 6 to the water outlet 2. A valve 14 controls the pressure of air supplied to the boiler furnace by the fan. The electric motor may also be thermostatically controlled.
Patent GB-517138-A (GB)
Title: Improvements in and relating to the production of tiles and other moulded articles from setting compositions containing calcined magnesite
IPC: C04B28/32
Filed: 1938-07-19
Abstract: 517,138. Moulding oxychloride compositions. BRITISH & INTERNATIONAL FLOORING CO., Ltd. (Goetzl, K. F.). July 19, 1938, No. 21431. [Classes 70 and 87 (ii)] Articles, such as tiles, are moulded by stamping in moulds a crumbly mixture comprising calcined magnesite, organic fibrous material and magnesium chloride, the mixture consisting of one part by weight of magnesium chloride solution of 17-27‹ BÚ to 1.3 to 2 parts by weight of dry calcined magnesite and fibrous material. In an example, 79 parts by weight of ground magnesite are mixed with 21 parts of woodflour and moistened with 70 parts of magnesium chloride solution at 21‹BÚ.
Patent GB-1078644-A (GB)
Title: Improvements in and relating to films of thermoplastic material
Inventor: DUNS JOHN
IPC: B26F1/24
Filed: 1963-05-29
Abstract: 1,078,644. Perforating thermoplastic film. SMITH & NEPHEW PLASTICS Ltd. May 27, 1964 [May 29, 1963], No. 21491/63. Heading B5A. Thin film 24 of thermoplastic material is perforated by passing it between two rollers 15, 16 one of which has a rubber or like cushioned surface 19 while the other has a multiplicity of heated truncated pyramids or cones which form the perforations by melting the material of the film. Feed rollers 26 ... 29 and electric heaters 18 are provided.
Patent GB-631905-A (GB)
Title: Improvements in or relating to the suspension, steering and driving of front wheels of motor vehicles
IPC: B60G3/24
Filed: 1947-08-07
Abstract: 631,905. Vehicle spring suspensions. DUNCAN INDUSTRIES (ENGINEERS), Ltd. and RENWICK, W. S. Aug. 7, 1947, No. 21493. [Class 108 (ii)] [Also in Group XXXI] In a front wheel drive motor vehicle (see Group XXXI), the wheel assembly is articulated to the chassis by a link 15 at D and the link 11 at C and is sprung by an arrangement comprising a rod 18, Figs. 1 and 2, pivoted at its lower end to the suspension link 11 on a pin 20 having a rubber sleeve 19, Fig 3, and slidable at its upper end in the inner member of a ball-joint 21 in a housing fixed to the chassis, the rod carrying a series of rubber washers 22 bonded to metal washers 23. A helical compression spring may be used in lieu of the composite rubber and metal washers.
Patent GB-835703-A (GB)
Title: Improvements in dyestuffs for hectograph inks and masses
IPC: B41M5/04
Filed: 1956-07-13
Abstract: The invention comprises mixtures of at least two dye complexes prepared by reacting equimolecular amounts of two dyestuff components, one being a basic dye of the di- or tri-arylmethane, acridine, xanthene, or thiazine series and the other being of the chrysoidine or fuchsine series, and mixtures of such complexes. p  In examples, chrysoidine B(C.I. No. 27) is reacted in presence of water with an equimolecular amount of (1) crystal violet, (2) Victoria Blue, (3) Malachite Green, and (4) auramine, and also (5) new fuchsine is similarly reacted with auramine, to give five complexes from which mixtures are made.  The mixture may be worked into hectograph masses.  Specification 710,116 is referred to.
Patent GB-532878-A (GB)
Title: Improved method of producing coloured corrosion-resistant coatings upon articles of magnesium or its alloys
IPC: C23C22/60
Filed: 1939-07-26
Abstract: 532,878. Coating, magnesium and its alloys. DOW CHEMICAL CO. July 26, 1939, No. 21733, Convention date, Aug. 12, 1938. [Classes 82 (i) and 82 (ii)] A coloured corrosive-resisting coating is produced on articles of magnesium or its alloys by treating the articles with an aqueous solution of a soluble base of an alkali or alkaline earth metal and a dye soluble in the solution under pressure of 20-400 lb. per sq. inch above the boiling point and between 110‹C. and 250‹C. Alkali hydroxides or carbonates are referred to and in example the solution contains 2-20 per cent. of sodium hydroxide, lithium hydroxide or sodium carbonate and 0.1-0.5 of a soluble dye and the temperature used 110-250‹C. Examples of alloys which are treated are (1) 6 per cent. of aluminium, 0.2 per cent. of manganese and 3 per cent. of zinc, rest magnesium, (2) 6 per cent. of aluminium, 0.2 per cent. of manganese, rest magnesium, (3) 6.5 per cent. of aluminium, 0.2 per cent. of manganese, 0.7 per cent. of zinc, rest magnesium.
Patent GB-714895-A (GB)
Title: Improvements in or relating to lubricating grease
IPC: C10M169/00
Filed: 1952-08-29
Abstract: A lubricating grease composition comprises a non-hydrocarbon oil, containing 50 per cent. or more by weight of a synthetic complex ester of lubricating grade and viscosity and 5 to 25 per cent. by weight, based on the total composition of a complex soap thickener composed primarily of 0.5 to 2 mols. of alkali metal soap of fatty acid in the C12 to C22 range and 1 mol. of alkali metal salt of a carboxylic acid having a molecular weight below 100.  The complex ester may be one prepared by esterifying a dihydric alcohol, such as glycol, triethylene glycol, or a thioglycol, with a dibasic acid, such as adipic acid or sebacic acid, to produce an ester having a dihydric alcohol residue at the centre and two dibasic acid residues attached; the end groups of the acid residues being esterified with a monohydric alcohol, such as ethyl hexanol or the alcohol mixture known as "Lorol B". (The word "Lorol" is a Registered Trade Mark.) The ester may also be one having a dibasic acid centre esterified with two mols. of dihydric alcohol, and the esterification completed with two mols. of monobasic acid.  The fatty acid soap may be lithium or sodium stearate, or a lithium soap of "Hydrofol Acids 54," derived from hydrogenated fish oil.  The low molecular weight salt may be lithium or sodium acetate, propionate, formate, acrylate methacrylate or crotonate.  The complex thickener may be prepared by neutralizing a mixture of the fatty acid and low molecular weight acid with lithium or sodium hydroxide, dried, and then added to the complex ester; or the salt and soap may be formed separately, dried, and added to the ester.  The non-hydrocarbon oil may contain up to 50 per cent. of a silicone oil such as a polydimethyl silicone or a simple ester, such as di-2-ethylhexyl sebacate or adipate.  Antioxidants such as phenothiazine and phenyl-alpha-naphthylamine, tackiness agents, metal deactivators, plasticizers and extreme pressure agents may be added.
Patent GB-972229-A (GB)
Title: Compositions comprising graft copolymers
IPC: C08L33/00
Filed: 1963-05-31
Abstract: A composition comprises a blend of (A) a graft polymer of a resin-forming monomer on a rubbery copolymer of a monomer mixture comprising at least two alpharmonoolefins, and (B) a hard, rigid resinous polymer compatible with the graft copolymer. The rubbery copolymer may include a non-conjugated diene hydrocarbon monomer. Exemplified compositions are (1) acrylonitrile /styrene copolymer + a graft copolymer of acrylonitrile and styrene on an ethylene/propylene/dicyclopentadiene copolymer; (2) styrene/a -methyl styrene copolymer + graft copolymer of styrene or an ethylene/propylene or an ethylene/propylene/dicyclopentadiene copolymer, (3) styrene/methyl methacrylate copolymer + graft copolymer of styrene and methyl methacrylate on ethylene/propylene copolymers, (4) polyvinyl chloride + ethylene/ propylene copolymers and (5) a styrene/a -methyl styrene copolymer + a graft copolymer of styrene on an ethylene/propylene copolymer. UV absorbants may be added to the compositions. Specification 878,443 is referred to.
Patent GB-408131-A (GB)
Title: Improvements in mechanical clearance regulators for the valve gear of internal combustion engines
IPC: F01L1/22
Filed: 1933-08-03
Abstract: 408,131. Valve gear. THOMPSON PRODUCTS, Inc., Cleveland, Ohio, U.S.A. Aug. 3, 1933, No. 21858. Convention date, Aug. 17, 1932. [Class 7 (vi).] For automatically taking up clearance ir the valve gear and compensating for wear anc heat expansion, the valve rockers 7 arc mounted upon eccentrics 9, which are provided on the pivot shaft 8 and rigidly connected to arms 14, the ends of which are connected by torsion springs 19 tc a self-locking wedge or cam 15 bearing on a flexible support 20. During the operative period of the valve gear, the rocker 7 tends to turn about its engagement with the valve stem as a fulcrum, thereby moving the eccentric 9 slightly counter-clockwise and consequently lowering the end of the arm 14, stressing the spring 19 and also the support 20. When the valve has closed again, these springs serve to return the eccentric an amount sufficient to keep the rocker bearing on the valve stem.
Patent GB-1150911-A (GB)
Title: Method And Apparatus For Forming Solid Glassware
Inventor: CHAPMAN GEORGE CARL
IPC: C03B17/00
Filed: 1966-05-18
Abstract: 1,150,911. Drawing glass. OWENS - ILLINOIS Inc. 18 May, 1966, No. 22003/66. Heading C1M. In the precision forming of glass articles such as rod, tube and sheet, molten glass is forced through a precisely dimensioned opening extending through a die, the die being cooled so that the withdrawn glass is rigid, i.e. at least the surfaces are solid and internal heat is insufficient to remelt the surface. A reservoir 10, Fig. 1, for molten glass is fed from a forehearth 13 and has an overflow 12 so that a constant head of glass is maintained. An opening 14 at the bottom of the reservoir has a tapered tube 15, heated by a coil 16, leading to and into a carbon or graphite die 17 with a constant bore 18. As shown, the bore is circular to form rod but an alternative die can be used with a rectangular bore to form glass sheet. The die 17 is closely surrounded by a cooling chamber 19 with inlet 20 and outlet 21 for cooling fluid. The chamber 19 is formed with a flange 22 threaded to receive a shaft 23 supported by a bearing 24, rotation of the shaft 23 by crank 25 moving the chamber 19 along the die 17 so that the glass may be made rigid at a selected part of the travel of rod 27 therethrough. Rollers 28, 29 draw the rod 27 from die 17 at a rate dependent upon the rate at which the rod is formed rigid. A metal bail is used to start production but once in operation, the withdrawing of the rod may be stopped and restarted at any time, the rigid glass forming a plug for the reservoir. Molten glass in a crucible 33 (Fig. 4, not shown) surrounds a vertical die 57, Fig. 7, having a cover 54 to fit the crucible, air or gas under pressure being forced through a pipe (46) and through an opening (44) to force the molten glass up through the bore 64 of the die 57. The die 57 has cooling pipes 58 embedded therein and a shield 59 to prevent cooling of the molten glass in the reservoir. For forming rod, the die 57 ends with the tabs 56, on which the die fits, but for tubing T three extensions 60 of the outer platinum casing 55 are joined by cross-pieces 61 and a socket 62 which supports a slightly tapered mandrel 63. The tubing T, or rod or sheet from a rectangular die, is drawn upwardly by rollers (48), (49) and passes through a further adjustable cooling chamber (47). Rod of different diameter may be formed in the same apparatus by use of a die having a bore 65, Fig. 10, with a number of different bores, each section being separately surrounded by cooling pipes 66, 68, 70, 72. As shown, pipes 66, 68 are not in use, pipes 70 and 72 cooling the glass to give rod of the third largest diameter bore. Similar variations may be used for glass bars, sheets or tubes.
Patent GB-983778-A (GB)
Title: Pneumatic distributing system
IPC: B65G51/02
Filed: 1962-06-07
Abstract: 983,778. Pneumatic conveyers. N. CORAH (St. MARGARET) Ltd., D. C. MASTERS, and A. BREWIN. May 29, 1963 [June 7, 1962], No. 22020/62. Heading B8A. Light-weight articles, such as knitted stockings delivered pneumatically along a main distributing conduit 10, Fig. 2, are relatively diverted to branched delivery conduits 12, by air nozzles 17 associated with each branch conduit, non-return valves 14 being arranged in each branch conduit to prevent back flow of air when the associated nozzles 17 are not operating. In the example in which stockings are inspected on a hollow rotatable holder 3 and are then reversed and drawn by suction down a central conduit 36, the stockings pass through a tube 9 leading to the main distributing conduit 10. The nozzles 17 are disposed opposite each branch conduit 12 and receive blasts of air through slide valves 20 controlled from pushbuttons 24, Fig. 1 (not shown). In a modification, stockings dropped into a hopper 34, Fig. 3, are drawn by suction into a main distribution line 26 having branches 27 disposed at inclined angles and having nozzles 29 for injection of air blasts disposed at positions beyond non-return valves 28. The end of the line 26 may have a control air inlet 36 which produces a reverse flow of air to prevent articles being carried along the line 26 and inadvertently passing the selected branch line 27. Specification 983,779 is referred to.
Patent GB-1011098-A (GB)
Title: Mounting and drive of a stabilising fin on ships or aircraft
IPC: B63B39/06
Filed: 1962-06-08
Abstract: 1,011,098. Ships stabilizers. LICENTIA PATENT VERWALTUNGSG.m.b.H. June 8, 1962 [June 9, 1961], No. 22261/62. Heading B7M. [Also in Division F1] A stabilizing fin 7 on a ship which can be turned about the pivots 3 and 4 to move it from a stowed position to an operating position, comprises an hydraulic rotary van motor 13 and 14 to rotate the fin for stabilizing movements, in which the inner member 13 is joined to the supporting pivots 3 and 4 and the outer member 14 is joined to the fin 7 by resilient couplings 15. A casing 17 is rigidly connected to the fin 7 to surround the member 14 and is provided with a seal 18 around the member 19 so that the roller bearings 10 and 11, the exterior of the motor 13 and 14 and the parts 24 and 25 of the restoring mechanism can be supplied with oil to lubricate and prevent the ingress of water.
Patent GB-1506581-A (GB)
Title: Stilts for use in mine workings
IPC: E21D15/22
Filed: 1975-08-05
Abstract: 1506581 Yieldable mine roof support stilts GKN SANKEY Ltd 5 Aug 1975 [18 May 1974] 22308/74 Heading E1E A stilt for a mine roof support leg 11, 211 includes an elongate deformable member 13, 213 having at least two limbs 14, 214 and 15, 215 extending in the same direction from a bend 17, 217 therebetween, the limb 15, 215 being adapted to carry the leg 11, 211 and being itself supported by the -limb 14, 214 whereby under load one limb 15, 214 is stressed in tension and increases in length, and the other limb 14, 215 is stressed in compression and decreases in length, with movement of the bend 17, 217 along the deformable member, to control descent of the leg. As shown, there are two of each such limb contained in a tubular body 10, 210, the inner limbs 15, 215 being connected by a bend 16 or welded block 219 to engage the leg.
Patent GB-973453-A (GB)
Title: Purification of germanium tetrachloride
IPC: C01G17/04
Filed: 1962-06-08
Abstract: Germanium tetrachloride (GeCl4) is purified by scrubbing GeCl4 vapours with a counter-current flow of hydrochloric acid and an oxidizing agent for trivalent arsenic e.g. Cl2. The acid may be at 83 to 110 DEG  C., and may be "constant-boiling" hydrochloric acid.  The ratio of acid to GeCl4 should be at least 1 : 1. The purification process may be carried out in a column, or columns, of height from 8 to 24 feet, the acid being introduced in the upper part of the column, the GeCl4, which has a retention time of 1 to 2 minutes, at the lower part either as a vapour, or a liquid to be vaporized in the column.  The chlorine, in amount at least sufficient to cause the oxidation of the arsenic impurity to the pentavalent state, may be introduced into the column at the same level as the GeCl4.  Part of the acid may be recycled to the column, e.g. at a level below the middle. When two columns are used fresh acid may be introduced in the upper part of the second column and thence in series into the first column, the GeCl4 being passed in series in the opposite direction. The GeCl4 vapours, after scrubbing are condensed, and then refluxed to remove any residual free chlorine. Specification 734,144 is referred to.
Patent GB-1301601-A (GB)
IPC: B60T13/16
Filed: 1971-04-19
Abstract: 1301601 Power boost mechanism BENDIX CORP 19 April 1971 [16 March 1970] 22361/71 Heading F2F A power boost mechanism comprises a valve member 34 movable in a valve housing for controlling the flow of pressurized fluid to a piston 24 of a servomotor, a movable input control member 60 connected to the valve member 34 and a force transmitting means interposed between the input control member 60 and an operator input rod member 42 for permitting the rod member to actuate normally the valve member 34, the force transmitting means including release means adjusted to disconnect the input member 42, 60 and to permit relative movement there between when the force transmitted from the input rod member 40 to the input control member reaches a predetermined valve so that the input rod member 40 engages the piston 24 to manually actuate the same without any possiblity of the valve member being actuated at the same time. In the construction shown the force transmitting means comprises a plurality of balls 50 which normally sit in a groove 48 in the input rod member 42 but which are, on reaching the aforesaid predetermined force, urged out of the groove by an inclined surface 66 on the input control 60 and into an elongated groove 52 of greater depth than the groove 48. The valve member 34 and operation thereof are as disclosed in Specification 1,209,741.
Patent GB-700984-A (GB)
Title: Improvements in or relating to machines for blowing bottles and other hollow articles from organic plastic materials
Inventor: STRONG BERNARD
IPC: B29C48/09
Filed: 1950-09-11
Abstract: 700,984. Hydraulic machines. SHIPTON & CO., Ltd., E. Sept. 10, 1951 [Sept. 11, 1950], No. 22365/50. Class 69 (2). [Also in Groups V and XXIV] A machine for extruding plastic tubes and blowing the tubes in moulds to form hollow articles (see Group V) includes a hydraulic-system which opens and closes the moulds and performs other operations. Four moulds M are fed in turn with plastic material by a screw 1. Each mould is in two parts 54 which are closed by large hydraulic rams 56, 57 and opened by small hydraulic rams 56', 57<SP>1</SP>. A hydraulic pump 46 delivers pressure oil through line 47 to four valves 60 ... 63 and thence through lines 68 or 69, to rams 56, 57 or to rams 56<SP>1</SP>, 57<SP>1</SP> respectively. When pressure passes to rams 56, 57 a check valve 70 maintains the pressure to hold the mould parts firmly closed. When pressure passes to rams 56', 57<SP>1</SP> check valve 70 is released and allows exhaust of the large ram cylinders through line 71. Each mould has its own valve, and each valve controls four rams. There are four check valves 70, but only one is shown. The valves are operated one after another by cams 64 ... 67 on a rotary cam shaft 27. Cam shaft 27 is rotated intermittently, 90 degrees at a time, by a hydraulically-operated ratchet gear 40 (see Group XXIV), moved by hydraulic cylinders 44, 45. The supply of oil to these cylinders is via valve 48 and lines 51, 52. Valve 48 is controlled by a cam 49 driven from electric motor 4 via reduction gear 5 and adjustable gear train 50. The screw 1 is rotated by motor 4 through reduction gearing 5 and clutch 6. The position of the clutch is controlled by two cylinders 85, 86 fed with oil from valve 84 controlled by cam disc 82 on shaft 27. When one of the moulds is not being used a cam 83 is put in the appropriate place in the cam disc to operate valve 84 and cylinders 85, 86 to disengage the clutch for the period normally used to feed that mould.