baber/WOPTO huggingface dataset:
Patent GB-501809-A (GB)
Title: Improvements relating to apparatus for moulding thermo-plastic material by injection
IPC: B29C45/46
Filed: 1937-09-02
Abstract: 501,809. Injection moulding. THERMOPLASTICS, Inc. Sept. 2, 1937, No. 24048. Convention date, Oct. 26, 1936. [Class 87 (ii)] Thermoplastic material is injected concurrently into a plurality of mould sprues through nozzles which are mounted for independent movement and which are initially seated in the sprues under yielding pressure to ensure concurrent full pressure engagement of all the nozzles. A two part mould has a movable upper part and a fixed lower part 2 containing a number of sprues 4. A number of nozzles 11 co-operate with the sprues 4, each nozzle being carried by a platen 10 containing an injection cylinder 13 supplied with material from a hopper 18 by a piston 19 through a heated head 17. The injection piston 51 is operated by hydraulic or pneumatic pressure through the pipe 25 and is returned by a spring 26. The platen 10 is raised by pistons 30 hydraulically or fluid operated through pipes 33. A number of platens 10 co-operate with the mould 2, the various pipes 25 and 33 being connected in parallel to two main conduits which may connect through valves with a main supply line. All the nozzles 11 are thus seated independently in the sprues 4 under equal pressure. Small booster pistons 40 may be provided, connected to the pipes 33, for closing particular platens 10 under increased pressure. With this apparatus a number of nozzles may co-operate with sprues at different levels in the same or a number of moulds, the closing pressure being independent of the distance of travel of the nozzles. Specification 477,398 is referred to.
Patent GB-383334-A (GB)
Title: Self-balancing automatic weir gate
IPC: E02B7/20
Filed: 1931-08-27
Abstract: 383,334. Sluice gates. GLENFIELD & KENNEDY, Ltd. and BORLAND, J. H. T., Kilmarnock. Aug. 27, 1931, No. 24087. [Class 68 (ii).] A weir gate comprises a pivoted section counterbalanced by a suspended upper section. As shown in the Figure, the lower section A consists of steel plates and girders, and is mounted on knife-edged bearings B, and the upper section C, also consisting of plates and girders, is loaded with ballast to form a counterbalance for the section A, to which it is connected by rods E and chains El on pulleys F. The section A is dimensioned and inclined so that the hydraulic load is practically uniform, and as the water level falls the section A rises and the section C falls. The section C may be arranged to lift above the flood level by means of differential pulleys.
Patent GB-1341630-A (GB)
Title: Paperlike polymeric films and production thereof
IPC: B41M5/00
Filed: 1971-04-19
Abstract: 1341630 Porous ethylene and propylene polymer films TOYO BOSEKI KK 19 April 1971 [13 March 1970 16 Sept 1970 18 Sept 1970 26 Dec 1970] 24102/71 Heading C3C [Also in Division B5] A paper-like polymeric film having a rough surface with irregularities in a finely fibrillated state, a light transmittance of not greater than 70% and a void volume of 40 to 300 cm.<SP>3</SP> per 100 g. of film is prepared by extruding a blend containing at least 5% by weight polypropylene or a propylene-ethylene copolymer having an ethylene content of not more than 15 mole per cent, 5 to 70% by weight polyethylene or an ethylene-propylene copolymer having a propylene content of not more than 30 mole per cent and from 5 to 50% by weight of particles of an inorganic substance, e.g. calcium carbonate, calcium oxide or titanium dioxide, having an average particle diameter of 0À1 to 15 microns, cooling the extruded film and stretching it in at least one direction. The blend may optionally contain 5 to 60% by weight of polystyrene or a styrene copolymer, e.g. acrylonitrile-butadienestyrene copolymer, styrene-acrylonitrile copolymer or butadiene-styrene copolymer. The minute voids (average diameter 2-250 microns) are produced in the film by the stretching step which may be carried out uniaxially at a temperature of from 40 to 170 C. and a draw ratio of 3 to 20 or longitudinally at 40 to 170 C. at a draw ratio of 4 to 6 followed by transversely at a temperature below 220 C. but above the longitudinal stretching temperature at a draw ratio of 3 to 10 times. In examples films are prepared by melt extruding blends of the required constituents, the films being stretched longitudinally between heated rollers at a draw ratio of 5 and temperature of 90, 130 or 135 C. and then transversely on a tenter frame at a draw ratio of 8 and temperature of 155 or 160 C. The stretched films are heat set whilst being held on a tenter frame at 150 C. for 20 seconds in a hot air tunnel.
Patent GB-1396385-A (GB)
Title: Light modulation method
IPC: G02F1/135
Filed: 1972-05-23
Abstract: 1396385 Measuring temperature photoelectrically XEROX CORP 23 May 1972 [25 May 1971] 24130/72 Heading G1A [Also in Division H4] The helix pitch # O  of a layer of material in the optically negative cholesteric liquid crystal phase is altered to a value # F  on application of a suitable stimulus such as heat, electric or magnetic field, shearing force, pressure, foreign chemicals, x-rays, arid the corresponding variation in optical activity is detected by analyzing monochromatic plane polarized light transmitted therethrough, the wavelength of the light lying outside the bands # O   2## O  and # F   2## F,  where ## O  and ## F  are the bandwidths of the light reflection bands associated with # O  and # F . Modulation of the transmitted light is effected by controlling the applied stimulus, or the modulation of the light is detected to measure the stimulus. The analyzer may be disposed to block the light in the absence of the stimulus. The cholesteric layer is less than 50Á thick, and preferably 0À5-10Á and is formed of one or more cholesteric materials either per se or mixed with nematic and/or sinectic and/or other comparible materials such as lecithin and cholesterol, bits and specific examples of materials being provided. In an imaging method a shaped electric field is applied across the layer by shaped electrodes. In an imaging converter, the layer and a photo-conductive layer, e.g. Zn5 for ultraviolet light, are sandwiched between transparent electrodes. Temperature, may be measured by a device comprising in order a combined light source e.g. a laser and mono-chromotor 20 polarizer 22, the cholesteric layer 24, an analyzer 26 and a photo-voltaic device, photo-multiplier, solid state diode or other photo-cell 28 in an integral multi-layer construction.
Patent GB-518177-A (GB)
Title: Improvements in or relating to forced draught heating apparatus
IPC: F24H9/00
Filed: 1938-08-16
Abstract: 518,177. Boiler &c. furnaces. CERAC, Ltd., and STABLES, R. P. H. Aug. 16, 1938, No. 24161. [Class 51 (i)] In furnaces of the kind described in Specifications 403,821 and 454,578, the water jacketed air supply pipe 14, .15 is removably mounted in one of the water jacketed end walls 12 of the fuel trough 11. The end wall is provided with an opening having a sleeve 18 and surrounded by a flange 21 welded to the outer plate 13. Forced draught is supplied to the passage 14 through an inlet 23 arranged outside the furnace wall and water supply and delivery connections 26, 27 for the jacket 15 are also arranged outside the furnace wall. Flanges 20 and 24 are provided for securing the air pipe to the furnace wall and for securing a closure plate 25 to the water jacket. Packing 19 is arranged between the air supply pipe and sleeve 18.
Patent GB-1080126-A (GB)
Title: Process for the production of arylazo carbonyl compounds
Inventor: HUENIG SIEGFRIED
IPC: C09B27/00
Filed: 1966-05-31
Abstract: Arylazo carbonyl compounds of the formula R1-N=N-CO-R2 wherein R1 represents an aromatic group free from active hydrogen atoms and R2 represents an aliphatic, cycloaliphatic, araliphatic or aromatic group, are obtained by reacting an O-alkylnitrosimmonium salt having the formula <FORM:1080126/C2/1> wherein R1 represents a hydrogen atom or an alkyl or aryl group, R11 represents a hydrogen atom or an alkyl group R11 represents an alkyl group and X - represents the equivalent of a strong acid anion; with a carboxylic acid salt of the formula <FORM:1080126/C2/2> wherein Me(+) represents the equivalent of a metal cation, and isolating the products, which include, as well as the required product, alcohols R111-OH and ketones or aldehydes R1-CO-R11. Preferred carboxylic acid salts (III) are those which are soluble in water, in strongly polar solvents or in mixtures of water-soluble organic solvents and water.  Among the specified products are compounds of the formula <FORM:1080126/C2/3> wherein Cbzo represents a carbobenzoxy group, which are obtained by using a glycine salt wherein the NH2 group is protected by a Cbzo group. Examples are given for the preparation of the compounds.
Patent GB-1106981-A (GB)
Title: Improvements in or relating to laminates
IPC: F16B11/00
Filed: 1965-06-08
Abstract: 1,106,981. Laminates. CONTINENTAL CAN CO. Inc. 8 June, 1965 [1 July, 1964], No. 24216/65. Heading B5N. A laminate, e.g. for use in the construction of containers, comprises a layer of metal foil 16 laminated to a layer 17 of plastics or thermodegradable material provided with two lines of weakening 19, 20 which define a removable tear strip, and which are formed by the application to the layer 17 of heat at a temperature less than that which will effect melting of the layer 16. The layer 17 may be covered by a further layer of metal foil. The lines of weakening may be produced by applying to the laminate a heated tool e.g. a knife, under pressure and simultaneously effecting relative movement between the laminate and the tool. The metal foil may be aluminium, brass, copper, tin, or iron which may be tin plated or provided with an enamel coating on at least one side. Possible plastics materials are low-density polyethylene polystyrene, Mylar (R.T.M.), and polyvinyl resins, and examples of thermodegradable materials given are cellophane (R.T.M.) and paper.
Patent GB-422071-A (GB)
Title: Improved electric annunciator or indicator system
IPC: G08B5/36
Filed: 1933-08-31
Abstract: 422,071. Mercury switches. BRYCE, Ltd., Kelvin Works, and COLLEY, A., Charmouth, Hackbridge Road, both in Hackbridge, Surrey. Aug. 31, 1933, No. 24235. [Class 38 (v)] [See also Group XXXVIII] A base member 32 carrying cores 33 for operating and re-set windings, also carries a standard 31 to which armature 29 is pivoted on pin 30. The arma. ture carries L-shaped plates 28 between which mercury switch 28<a> is mounted, and the armature is lightly retained in its tilted positions by a spring ball 35 mounted in a tube 34 on the armature and engaging a fixed plate 36.
Patent GB-861804-A (GB)
Title: A new or improved method and apparatus for bending panes of glass and the like
IPC: C03B23/027
Filed: 1959-07-15
Abstract: 861,804. Bending glass sheets. DEUTSCHE TAFELGLAS AKTIENGESELLSCHAFT. DETAG. July 15, 1959 [July 17, 1958; Aug. 8, 1958], No. 24364/59. Class 56. In the bending of glass sheets 15, as for vehicle windshields, the mould comprises a middle part 9 fixed by supports 10 on a frame 11 and two outer parts 12 freely pivoted on supports 13 on the frame 11 at a higher level than the part 9, the parts having shaping surfaces corresponding to the final curvature of the bent glass sheet 15, there being no pressure forces from the mould acting towards the centre of the glass sheet. As shown, the plane sheet rests on both the inner and outer edges of the outer parts 12 and as the glass sags under heating, the parts 12 pivot to rest on supports 14 so that the parts 12 are in line with the inner part 9. In a modification the plane sheet rests only on the outer edges of the parts 12, which rest against further supports outwardly of the pivot supports 13 and extending slightly above the pivots.
Patent GB-1222749-A (GB)
Title: Improvement to electromagnetic relays
Inventor: FALONE GIACOMO
IPC: H01F7/08
Filed: 1969-05-14
Abstract: 1,222,749. Plunger armature relays. TEXAS INSTRUMENTS Inc. 14 May, 1969 [17 May, 1968], No. 24613/69. Heading HlN. An electromagnetic relay with a plunger armature has the shape of the armature 14 arranged so that on energization of the relay coil 6 the part 17 of the armature of restricted mass is attracted and the contacts 2, 11, 3, 12 close before the larger section 18 of the armature is effective to increase the armature speed and stress the contact pressure spring 13 to prevent contact rebound. The restriction may be due to an annular channel 15 or an internal recess 16 (Fig. 4). The contacts 11, 12 on the bridge 10 co-operate with fixed contacts 2, 3 within a housing 1 on which the coil is wound and which is held together by a pin 7 on which the armature and movable contact assembly slide.
Patent GB-1278559-A (GB)
Title: Thermally insulated cabinet construction for vending machines or the like
Inventor: O'NEAL WILBERT OSBORNE
IPC: F25D23/02
Filed: 1971-04-19
Abstract: 1278559 Heat insulation door seals VENDO CO 19 April 1971 [31 July 1970] 24617/71 Heading E1J [Also in Division F4]  A heat insulated cabinet for vending machines or the like comprises an insulated door 18 made from spaced metallic panels 58, 62 having an edging strip 66 of heat insulative material extending therebetween about the periphery, which is contacted in the closed position by a sealing gasket 88 mounted on the cabinet walls which is formed of heat insulating material. The gasket has spaced resilient fingers 102 extending from the walls towards the door opening so as to provide heat insulated air chambers and also releasably hold the door in its closed position. The cabinet walls 26 and door 18 may be thermally insulated with a foamed plastics material held in position by structures 80, 96. The edging strip 66 Fig. 4 has a central spine 72 and side jaws 76 into which the flanges 64 of the panels 58, 62 are adapted to snap, then being retained by tabs 78 engaging hooked edges of the jaws.
Patent GB-174110-A (GB)
Title: Improvements in car trucks
IPC: B61F5/44
Filed: 1920-08-25
Abstract: 174,110. Brilhart, S. B. Aug. 25, 1920. Adjusting and connecting bogies and centrally-pivoted axles for steering.-A number or group of car bodies are coupled together and mounted on a number of radiating axle-trucks, certain of which are arranged adjacent the outer end of the end car bodies of the group while the remainder is or are arranged beneath the coupling point or points of the car bodies, the axle-trucks being linked together so that the axles operate substantially in the radii of every track curve. The oar bodies A, B are coupled together by a pin 20 passing through over lapping lugs which provide freedom for relative swaying and tilting of the bodies. Toward the outer end of the car bodies A, B four wheel axle-trucks are pivoted at 24 and connected to the single axle trucks by links 68, 74 and levers 71, 73. When more than two bodies compose the train, a single axle-truck is placed under each coupling and all the axletrucks are connected by means of radiating rods.
Patent GB-975304-A (GB)
Title: Method and apparatus for making flash exposures
IPC: C08F2/00
Filed: 1963-06-21
Abstract: 975,304. Flash guns. EASTMAN KODAK CO. June 21, 1963 [June 22, 1962; Oct. 24, 1962], No. 24714/63. Heading G2A. A device for firing a flash lamp comprises a flash lamp socket connected through a first switch to a source of electric power, a shunt circuit with a second switch arranged parallel to the socket and means for sequentially closing the second switch, the first switch and opening the second switch. The means may also simultaneously operate a camera shutter. In the camera shown in Fig. 1, the shutter 18 has a slot 26 for uncovering aperture 28, is pivoted at 20 and is operated by means of a strip 38<1> in a slidable release 38 which engages notches 42, 44 of a lever 34 alternatively, lever 34 and blade 18 being connected by a spring 30. Flash lamp 50 and its power source 48 are connected in series between pin 48 on lever 38 and pivot pin 36 of lever 34. The shunt circuit includes the blade 18 and a lead between steps 22, 24 for the blade. In the embodiment shown in Fig. 3 shutter blade 58 is spring urged clockwise but is latched in its cocked position by lever 64 pivoted at 68. It is released by slide 72 and cocked by the manual anticlockwise rotation of cover-blade 84 which engages a pin 88 on blade 58. The lamp 92 and battery 10 are arranged between springs 74, 70 engaging levers 72, 64 respectively and lamp 92 is shunted through spring 62, blade 58 and lever 64. In similar embodiment the shutter blade is spring urged into a cocked position and is operated by a hammer release lever. In the embodiment shown in Fig. 6, shutter blade 49 is pivoted at 51 and is operated by the depression of levers 17, 31 which release a hammer lever 37 pivoted at 39. Lever 31 is conducting and is electrically insulated from lever 17, contact 75 of lever 31 is always in engagement with contact 73. Contact 73 is connected through flash lamp 21 and battery 57 to contact 63 with which lever 31 engages when it is depressed. Levers 37, 31 are connected in parallel with lamp 21. In the above embodiment camera parts 18, 34, 38, 38<1>, 58, 64, 72, 37, 31 are electrically conductive, and blade stops 22, 24, 104, 130 and lever supporting pins 33 are adjustable during manufacture of the camera so that the shutter characteristics correspond with those of the flash.
Patent GB-748665-A (GB)
Title: Improvements in or relating to shuttering for casting ceilings
IPC: E04G17/16
Filed: 1953-09-08
Abstract: 748,665. Shuttering for casting ceilings. SCHAPER, H. Sept. 8, 1953 [Sept. 9, 1952], No. 24763/53. Class 20(2). A support for shuttering for casting concrete ceilings comprises beams g<SP>1</SP>, g2, Fig. 4, each resting at one end on a transverse central beam k and at the other end on a wall h by means of a shoe b, Fig. 1, The beams g<SP>1</SP> on one side of the beam k overlap the beams g<SP>2</SP> on the other side. A flange a of the shoe rests on the top of the wall or is embedded in a mortar joint of the wall. Two or more spaced beams k may be used for greater ceiling spans.
Patent GB-431300-A (GB)
Title: Improvements in let-off and take-up mechanisms for looms
IPC: D03D49/20
Filed: 1934-08-28
Abstract: 431,300. Looms. BIRD, W. F., West Rolling Road, Springfield, and HEWTON, W. R., 1433, North 62nd Street, Philadelphia, both in Pennsylvania, U.S.A. Aug. 28, 1934, No. 24809. [Classes 142 (i) and 142 (iii)] Let-off motions ; takeup motions ; warp-tension regulating; pile - fabric looms.-The let-off and take-up motions are driven from a rotating shaft 28. The invention is described as applied to a loom for weaving face-to-face pile fabrics which are cut by a knife 100 and led over guides and rollers to takeup beams 98, 99, while the pile warps are fed from a beam 38, and the ground warps for the separate layers of fabric are fed from warp beams 36, 37. The warps from the beam 36 pass over the warps on the beam 37 and both those warps pass over a roller 39 on an arm 40 of a weighted lever 47 whereby the warps are kept in tension. The rotating shaft 28 operates a pair of cranks effecting the oscillation of arms 64, 88 for actuating the let-off and take-up motions respectively. The arm 64 is linked to a pawl-actuating device for rotating a worm geared to the beam 37, the inoperative movement of the link 68 raising the weighted lever 47 to relieve the tension on the warps. The arm 88 for actuating the take-up is linked to a vertical pawlcarrying slide 114 for rotating the take-up beams 98, 99. The pawls 112, 113 are controlled by springs 122 and weights 124 to enable them to yield. Lays ; beat-up motions; shuttle-boxes.- The shuttle-boxes are stationary, while the lay is guided to move in a straight line on inclined guides 17 and is operated by cams having mergent concentric and eccentric portions.
Patent GB-1046112-A (GB)
Title: Process and apparatus for the introduction of multiple component synthetic resins into cavities
IPC: B29B7/60
Filed: 1963-06-21
Abstract: 1,046,112. Mixing in predetermined proportions. SCHERING A.G. June 21, 1963 [July 19, 1962], No. 24880/63. Heading B1C. Apparatus for introducing multiple-component synthetic resin into a cavity comprises motordriven high pressure gear pumps 3, 4, 5 which feed the components separately and in predetermined proportions to a mixing device 12 such as that disclosed in Specification 1, 020, 262. The pumps, which produce pressures of 50-400 atmospheres, are preferably of equal capacity and their number may be varied according to the desired component proportions. A contact on a manometer 14 on a hose 9 stops the apparatus in case of overload. Storage containers 1, 2 may be heated to control the viscosity of the resin components.
Patent GB-599513-A (GB)
Title: Improvements connected with pliers, wrenches and like tools
IPC: B25B7/08
Filed: 1945-09-26
Abstract: 599,513. Wrenches, pliers, &c. MEIGH HIGH TENSILE ALLOYS, Ltd., and MEIGH, C. H. Sept. 26, 1945, No. 24919. [Classes 61 (ii) and 61 (iii)] Wrenches, pliers, &c. comprise a jaw lever b with a gap b<3> through the middle formed or provided with a pivot lug b<2> and a solid jaw lever a adapted to be passed handle end first through the gap and formed with a semicylindrical recess a<1> seating over the pivot lug b<2>, arcuate guide surfaces a<3>, b<4> being formed on the two parts. A stop b<5> may be welded in the g p b<3> adapted to contact with the stop surface a<2> on the part a to prevent inadvertent separation of the two parts.
Patent GB-1339350-A (GB)
Title: Process for purifiying enzymes
IPC: C12N9/82
Filed: 1971-04-19
Abstract: 1339350 Purifying L-asparaginase ROUSSEL UCLAF 19 April 1971 [23 March 1970] 25044/71 Heading C3H In a process for purifying an L-asparaginase, glycerol and ethyl alcohol are added to an aqueous solution of the partially purified L- asparaginase to precipitate it in a purer form. The ratio of glycerol to ethyl alcohol may be from 1 to 3 parts of glycerol to 5 parts of ethyl alcohol by volume; in examples such volumes are added to 5 parts by volume of aqueous asparaginase. The pH of the aqueous solution may be about 5, the iso-electric point of asparaginase. The glycerol may be added first, followed by the ethanol.