baber/WOPTO huggingface dataset:
Patent GB-864952-A (GB)
Title: Improvements in or relating to thermoplastic films
Inventor: SEYMOUR DONALD EDWIN
IPC: D06N3/00
Filed: 1958-03-28
Abstract: Thin flexible porous polyvinyl chloride films are obtained by mixing with the resin up to 60% of a blowing agent decomposing at or below the gelling temperature, spreading the mix upon a support and heating in two stages, the first being below the gelling temperature whilst the second suffices both to decompose the blowing agent and form bubbles without appreciably expanding the film, and also to gel the film.  If a thinner is present heating to evaporate off the thinner will precede the first heating stage. When the film is to carry a pressure sensitive adhesive a primer coating is applied before the blowing, and is made porous by the gases liberated.  Textiles may be laminated with or included in the film.  Specification 819,635 is referred to.ALSO:Thin cast flexible porous resinous films are obtained by mixing with the resin up to 60% of a blowing agent which decomposes at or below the gelling temperature, spreading the mix upon a support having a glossy, patterned or other surface and heating in two stages the first being below the gelling temperature whilst the second suffices both to decompose the blowing agent and fixing bubbles without appreciably expanding the film and also to gel the film.  If a thinner is present the first stage is preceeded by a preliminary heating to evaporate off the thinner.  When the film is to carry a pressure sensitive adhesive, a primer coating is applied before the blowing and is made porous by the gases liberated.  The porous film may be laminated with textiles, or the textiles included in the film.  Specification 819,635 is referred to.
Patent GB-1367754-A (GB)
Title: Thiol- and t'ionothiol-phosphoric and -phosphonic acid esters and a process for their production
IPC: A01N57/20
Filed: 1973-03-02
Abstract: 1367754 Chlorine-containing unsaturated thiophosphorus esters BAYER AG 2 March 1973 [4 March 1972] 10244/73 Headings C2P and C2C Novel compounds of the general formula wherein R 1  is C 1 -C 6  alkyl, C 1 -C 6  alkoxy, or phenyl, R 2  is C 1 -C 6  alkyl and X is O or S are obtained by reacting a salt of the formula (R 1 )(R 2 O)P(X)SM wherein M is a monovalent metal, a chemical equivalent of a polyvalent metal or an ammonium group with a halide of the formula Br-CH 2 -C(Cl)=CH(Cl). The reaction is suitably effected in an inert solvent or diluent. The products have pesticidal properties and may be used as active ingredients in conventional pesticidal formulations. 1 - Bromo - 2,3 - dichloropropene is obtained by chlorinating propargyl alcohol at 10 to 20 C. and then reacting the product with PBr 3 .
Patent GB-1302805-A (GB)
IPC: B60R21/268
Filed: 1971-04-20
Abstract: 1302805 Crash restraint bags NISSAN MOTOR CO Ltd 20 April 1971 [25 April 1970] 10313/71 Heading B7B [Also in Division F4] In a vehicle crash restraint device having a bag inflatable by pressurized gas the gas supply container 13 is closed by a destructible seal 14 which is ruptured by forceful movement imparted to destroying means 16 in response to a collision. In one embodiment, Fig. 2, the outlet 13a of the container carries a housing 15 having a bore 15a in which a plunger 16 is mounted and a bore 15b communicating with the crash bag. On collision a detector 10 fires an explosion charge 18 which moves plunger 16 to rupture the seal 14. In a further embodiment (Fig. 3, not shown) the seal is fixed to a member which is explosively moved away from the container during collision. The container may be filled with pressurized or liquefied gas, or may contain a substance which generates gas on being exploded.
Patent GB-117490-A (GB)
Title: Improvements in Illuminating Devices containing Electric Incandescent Lamps.
IPC: F21V17/04
Filed: 1917-07-17
Abstract: 117,490. British Thomson Houston Co., (General Electric Co.). July 17, 1917. Reflectors; r e fl e c t o r - holders.-A reflector 3 is arranged below a concentrated light source so as to project upwardly all downwardly directed rays and a larger concave surface 6 for directing light rays outwardly and downwardly is arranged above the light source, and is provided with a downwardly extending marginal part 7 for refleoting the direct rays from the light source and reflected rays from the upper reflector. When employing an electric lamp bulb, the lower reflector 3 may conform to and closely engage the lower part of the bulb. In one form, the lower reflector 3 is a detachable preferably hemispherical metal cap having an internal reflecting-surface and arranged in close proximity to the bulb with its centre coinciding with the centre of the filament. The reflector 3 may be held in position by wires 4<1> having spring parts and attached to a coiled wire band 4. The upper reflector has a glazed or glass finished reflecting- surface, e.g. a porcelain finish. In a modification, the metal cap is secured to the bulb by a bolt engaging two spaced outwardly extending ears at its upper edge. The marginal part of the upper reflector may be inclined at an angle of 60 degrees to the horizontal, and the curve of the upper reflector is so plotted that all reflected rays strike the marginal part.
Patent GB-826184-A (GB)
Title: Polymerization catalysts for olefins
IPC: C08F4/64
Filed: 1957-03-29
Abstract: A catalyst for low pressure and temperature polymerization of olefins, especially alpha olefins such as propylene, butene 1, comprises a brown, semi-crystalline material containing alkyl groups, aluminium, titanium and halogens in the ratios of 1.5-3.0 atoms of aluminium and 2.5-3.5 atoms of halogen per atom of titanium.  In the preparation of the catalyst a base material is first formed by mixing trialkyl aluminium, e.g. triethyl aluminium with a reducible titanium tetrahalide, e.g. titanium tetrachloride in an inert liquid diluent such as aliphatic, aromatic and halogenated aromatic hydrocarbons in the ratio of 0.2-1.5 atoms of Al to 1 atom of Ti at 20-100 DEG  C. for 15-20 minutes to yield a brown solid having atomic ratios between 2.5 and 3.5.  The base material is then further treated in the presence or absence of the alpha olefin with further amounts of trialkyl aluminium to give the Al/Ti atomic ratio between 1.5-3.0. In an example of the polymerization of butene 1, 0.8 gms. of TiCl4 in 5 ml. of heptane and 42.5 ml. of n-heptane were heated at 68 DEG  C. and 0.25 gm. of Al(C2H5)3 in 2.5 ml. of heptane was added and the mixture maintained at 70 DEG  C. for 1 hour.  The catalyst was then added to 450 ml. of n-heptane saturated with butene 1 at 25 DEG  C. The resulting polymer was precipitated after 2 hours with isopropyl alcohol.ALSO:Olefins, e.g. propylene or butene 1, are polymerized under low temperatures and pressures in the presence of a catalyst made by mixing trialkyl aluminium with reducible titanium tetrahalide in an inert liquid diluent in a ratio of 0.3-1.5 atoms of aluminium per atom of titanium, maintaining at 20-100 DEG  C. for 5-120 mins., and activating the resulting brown precipitate by contacting it with additional trialkyl aluminium in amount so as to establish a final aluminium/titanium ratio of 1.5-3.0.  In an example of the polymerization of butene 1, 0.8 gms. TiCl4 in 5 m.l. of heptane and 42.5 m.l. of n-heptane were heated at 68 DEG  C. and 0.25 gm. of Al(C2H5)3 in 2.5 m.l. of heptane was added and the mixture maintained at 70 DEG  C. for 1 hr.  The catalyst was then added to 450 m.l. of n-heptane saturated with butene 1 at 25 DEG  C.  The resulting polymer was precipitated after 2 hrs., with isopropyl alcohol.
Patent GB-786901-A (GB)
Title: Apparatus for transverse stretching of thermoplastic films
IPC: B29C55/08
Filed: 1955-04-07
Abstract: <PICT:0786901/IV (a)/1> <PICT:0786901/IV (a)/2> <PICT:0786901/IV (a)/3> An apparatus for the continuous and progressive transverse stretching of a travelling continuous web of film of a synthetic linear organic polymeric thermoplastic material comprises a pair of laterally oppositely disposed endless chains provided with clamps for continuously gripping the opposite lateral edges of a continuous web of film during transverse stretching thereof while it is proceeding in a longitudinal direction in which the chains diverge, the chains being arranged to travel round driven sprockets and guide means which determine the path of travel of the chains and the degree of divergence of the portions of the chains which, at any instant, grip the film, and being supported so that at least those portions thereof that at any time are holding the web pass into or over a tank for containing liquid, either below or above the liquid level, driving, guiding and separating distance adjustment means being provided for the chains, which means are provided with means for holding them from above, within or over the tank, and the chains and guiding means therefor being freely laterally adjustable within or above the tank. As shown in Figs. 1 and 2, a travelling continuous web of thermoplastic film 1 having an initial width A is led through a bath of hot water 3 by means of four guide rollers 2.  During its passage through the water bath the film is transversely stretched to the width B by two diverging roller chains 5 to which are attached closely spaced automatically-operated film edge gripping clamps 4 (Fig. 3).  The clamps are opened, in known manner, by tripping members with appropriate guides and have guides 7 sliding in guide tracks.  The latter are integral with supports 8 for the driving means for the roller chains at the film width regulating stations C, D and E.  The roller chains 5 are driven by electric motors 9 through sprockets 6 mounted on vertical shafts passing through the supports 8.  The chain driving and guiding means are mounted on cross-members 10 forming with uprights 11 gantries mounted on a base-plate 12. Transverse adjustment is effected at each of the chain drive stations C, D and E by rotation of hand wheels 14 which are fixedly mounted on shafts 13 provided with screwthreads which engage corresponding internally threaded bores in the supports 8.  Fig. 3 shows on the left-hand side an arrangement for stretching the film while immersed in water in the tank 3 and, on the right, an arrangement for stretching it in the vapour space above the water level.  In the latter case the chains and chain drive mechanism are protected from vapours rising from the water bath by a guard plate 15 attached to the support 8.  Additional protection is afforded by a sheet of film or fabric material attached at one edge to the support 8 and at the opposite edge to a weight which is located outside the bath and serves to maintain the sheet taught irrespective of the distance between the support 8 and the edge of the tank.
Patent GB-391968-A (GB)
Title: Shaping riding boots
IPC: A43D3/12
Filed: 1932-04-11
Abstract: 391,968. Boot making machines. FRAZIER, J. A., 49, Columbus Avenue, South Braintree, Massachusetts, U.S.A. April 11, 1932, No. 10378. [Class 17 (i).] Uppers, machines for.-In shaping the legs of riding-boots by formers extending lengthwise of the boot leg and a wedge driven longitudinally between the formers, separators are provided between the wedge and the formers, the separators being held from longitudinal movement so that outward pressure only is transmitted to the formers. Horizontal endpieces 22, 23 support a pair of parallel members 21 along which slides a crosspiece 30 secured to a rack 28 gearing with a pinion on the shaft of a hand-wheel 29. A recess in the crosspiece 30 is adapted to engage the head of a wedge 66 positioned between fore and rear forms 64, 65 in the leg of a riding-boot resting at its other end on an adjustable strap 36. Between the wedge and the forms are separators each comprising a cross member 69 secured to metal strips 67 spaced to clear tenons 72, 74. To restrain the strips from moving with the wedge, the members 69 are received in U-shaped members carried by sleeves 43, 44 held from longitudinal movement by collars 45. The sleeves can turn relatively, to allow the two heads 69 to move away from each other, against springs.' To loosen the forms, when it is desired to remove the wedge, the cross-piece 30 has a universallypivoted arm 35, which can be swung to abut against the upper form. Manipulation of the wheel 29 then causes relative movement between the upper form and the separators these being held by their heads, and loosens the assembly of wedge and forms.
Patent GB-601162-A (GB)
Title: Improvements in vacuum drying cylinders particularly for grain
IPC: F26B11/04
Filed: 1945-04-25
Abstract: 601,162. Drying -apparatus. ROGERS, F. H., and HUZENLAUB, E. G. April 25, 1945, No. 10403. [Class 34(ii)] Vacuum drying-apparatus for cereals, &c., comprises a rotatable steam-jacketted vessel which is in the form of concentric cylindrical shells 1, 2, with filling and emptying hatches 21 and end covers 4, 6, and is fitted with hollow trunnions 5, 7 which are supported in journals 10. Heating steam is supplied to sand jacket and to axial tubes 24 disposed between plates 9, 25 through the trunnions 5, this trunnion also locating a tube 42 for the removal of condensate, and evacuation of vapour from the cereals being dried is effected through the trunnion 7. As shown, the trunnion 7 has an inward extension 8 which is bolted to the tube-plate 9 to mate with a vapour header 28 on the inner side of said plate 9, the header 28 being connected by radial tubes 30 to vapour extraction pipes 31 extending axially within and spaced from the inner shell 2. The pipes 31 are of perforated sheet metal covered with wire gauze of larger diameter and of appropriate mesh to prevent passage of grain, the gauze covering being made in a continuous length or, preferably, in short telescopic lengths 34a, 34b, Fig. 3, with each length 34b provided with a handle 36 so that it can be traversed upon adjoining lengths 34a to loosen and detach adherent grains. The radial tubes 30 are also perforated and gauze-covered. The condensate pipe 42 is stationary within the trunnion, being mounted in a pedestal 41 on the tubeplate 25 and having a depending leg 40 up which the condensate is forced by the steam pressure existing within the drying vessel. Helical vanes 38 may be fitted on the inner surface of the shell 2.
Patent GB-1420357-A (GB)
Title: Valve
IPC: F16K23/00
Filed: 1973-03-05
Abstract: 1420357 Valves C A BJORKLUND 5 March 1973 10463/73 Heading F2V A valve incorporates a space which on valve closure increases in volume to suck back liquid from the valve outlet and thereby prevent drip. In a burner supply valve, reduction in pressure of oil flowing from inlet 608 through passages 607, 611 to burner duct 615, causes disc 616 to move away from housing 613 to connect inlet 608 directly with return duct 614. The consequent fall in pressure in passage 607 causes a rubber sleeve 606 to contract along its entire length on to cylinder 609 whereby it shuts off flow to duct 615 and creates a chamber between the housing and the right-hand portion of the sleeve. The creation of the chamber produces a vacuum which creates the desired suck back in the duct 615 via passage 700.
Patent GB-642273-A (GB)
Title: Improvements in and relating to apparatus for winding threads or the like
IPC: B65H54/40
Filed: 1948-04-15
Abstract: 642,273. Winding thread &c. COURTAULDS, Ltd. April 15, 1948, No. 10470. Convention date, April 16, 1947. [Class 120(ii)] In apparatus for winding thread &c. 11 on to a bobbin &c. 30 which is surface - driven by a roller 31, variations in the tension of the thread being wound are compensated for by providing a fluid coupling 20 between the driving roller 31 and the power source 21. The thread may be supplied by way of an advancing and treating reel 25. In a further modification described, the thread to be wound is delivered from an uptwisting device.
Patent GB-909291-A (GB)
Title: Improvements in filling arrangements for liquefied gas lighters
IPC: F23Q2/52
Filed: 1961-03-22
Abstract: 909,291. Liquefied gas lighters. SOC. FRANCO-HISPANO-AMERICAINE FRANCISPAM. March 22, 1961 [April 2, 1960], No. 10491/61. Class 75 (3). When a nozzle 8 on a liquefied gas cylinder is pushed into an inlet bore in the tank 11 of a lighter a spring closed valve 17 in the tank opens and then a spring closed valve 4 in the cylinder also opens and liquefied gas enters the tank through a notch (not shown) on the end of the nozzle 8 and through slots 16 in the casing 15 of the tank valve 17 and gas from the tank escapes through the slots 16 and through an annular space 7 between the nozzle 8 and the seat member 12 of the tank valve. The area of the annular space 7 is less than the area of the notch in the end of the nozzle. The cylinder valve 4 is provided with a stem 4a which projects into the bore of the nozzle 8 and co-operates with a stem 17a on the tank valve 17 to open both valves. In a modification, Fig. 8 (not shown) a rubber gasket secured in the tank valve casing forms the seating for the tank valve. The nozzle of the supply cylinder is inserted with slight friction in an axial bore of the rubber gasket and a longitudinal groove in the outer surface of the nozzle forms an escape duct for the gas from the tank.
Patent GB-376735-A (GB)
Title: Improvements in or relating to wheels
IPC: B60B3/16
Filed: 1931-04-09
Abstract: 376,735. Detachable wheels. BUDD WHEEL CO., 2500, Hunting Park Avenue, Philadelphia, U.S.A.-(Assignees of Eksergian, C. L. ; 12141, Charlevoix Avenue, Detroit, Michigan, U.S.A.) April 9, 1931, No. 10518. Convention date, May 29, 1930. [Class 144 (i).] A detachable wheel of the type comprising a hollow nave section with openings for a plurality of securing elements is provided with one or more clamping and rein. forcing members which enter said openings and form the seating for the securing elements. As shown in the Figure, each 'bolt opening, extending between flanges 23, 24, of welded metal stampings 30, 31, and the inner periphery 16 of the wheel, is provided with a clamp 17 forming the seating for a nut 21 on a bolt 22 securing the wheel body to the hub flange 11.
Patent GB-941452-A (GB)
Title: A machine control system
IPC: G05B19/33
Filed: 1960-03-24
Abstract: 941,452. Valve relay circuits. INDUCTOSYN Ltd. March 24, 1960 [April 23, 1959], No. 10519/60. Heading H3P. [Also in Division G4] In a machine-tool control system, a stop circuit for switching-off the drive to the driven element when a position-error signal falls below a predetermined level, comprises an inverting amplifier 30 having a potentiometer 32 in its cathode circuit for varying the gain of the amplifier, and a trigger circuit 31 driven by the D.C. output of amplifier 30 andhaving a potentiometer 33 or 34 in its grid circuit by means of which the value of the D.C. error signal at which trigger 31 fires and relay 23 operates to effect the switching operation may be varied. Trigger 31 is a modified Eccles Jordan circuit and is not bi-stable. One or other of potentiometers 33, 34 is selected by relay 35, for positioning operations in the X or Y co-ordinate direction. Specification 801,506 is referred to.
Patent GB-270280-A (GB)
IPC: G03C7/25
Filed: 1927-04-19
Abstract: 270,280. Technicolor Motion Picture Corporation, (Assignees of Atwood, F. C.). April 30, 1926, [Convention date]. Printing processes.-Hardened films or surface coatings of gelatine, more particularly for the reception of dye impressions by the imbibition process of colour-photography are prepared by treating the gelatine with a bichromate hardening agent and an organic acid, drying promptly to a firm consistency and subjecting it to an elevated temperature. A celluloid base, for example, is coated with a gelatine solution containing potassium bichromate to the extent of 5 per cent of the gelatine used, and a small amount of acid, (e.g. about 3 drops of acetic acid per 100 c.c.). After drying the film it is uniformly heated over a prolonged period say to 90‹ to 100‹ F. The surface of the film is then washed to remove any excess of hardening agent and thoroughly dried. The heating may be done in a heated chamber or by heated rollers. The reduction of the chromium before drying the film should be avoided. Specification 270,279 is referred to.
Patent GB-662240-A (GB)
Title: Improvements in or relating to coated fabrics
IPC: D06M15/227
Filed: 1949-04-22
Abstract: A composition for coating textile fabrics comprises chlorosulphonated polythene and a polymeric alkyl ester of acrylic or methacrylic acid, the alkyl group containing not more than 8 carbon atoms.  Specified esters are methyl, ethyl, n-butyl and isobutyl methacrylates.  The polymeric ester is preferably present in from 20 to 40 parts per 100 parts of chlorosulphonated polythene.  Other ingredients specified are hydroquinone monobenzyl ether, wood rosin, magnesium oxide, litharge, a retarder consisting of salicylic acid and a dispersing agent, and benzothiazyl disulphide.  The mixtures are milled on a rubber mill kept to a minimum temperature and dispersed in a volatile solvent, e.g. toluene, which is evaporated after coating.  A further calender coating may be applied consisting of chlorosulphonated polythene, hydroquinone monobenzyl ether, sulphurized oil, wood rosin, polyoxyethylene glycol, calcium carbonate, coloured pigments, magnesium oxide, litharge and benzothiazyl disulphide, after which both compositions may be cured by heating at 260-280 DEG  F. for two hours.  Specifications 395,687, 542,414, [Group XL (c)], and 642,345 are referred to.
Patent GB-715785-A (GB)
Title: A jet engine for propelling craft in a liquid medium
IPC: B63H11/00
Filed: 1952-08-30
Abstract: 715,785. Propelling ships by water jets. COMPAGNIE ELECTRO-MECANIQUE. April 30, 1952 [Oct. 24, 1951; April 1, 1952], No. 10855/52. Class 114 A water jet propulsion unit for a ship comprises divergent ducts 19 through which water is entrained and pressurized, with or without the assistance of mechanical pressure raising means such as a screw 20, and a nozzle or nozzles 22 through'which a gaseous fluid is admitted as a dispersion of finely divided bubbles, the resulting mixture being then ejected through an outlet nozzle 26. The latter may be a simple convergent nozzle or a convergentdivergent nozzle. The nozzle 22 has a number of orifices 24 and is of annular form. Alternatively a system of radially extending nozzles may be provided. The screw may be used to assist at starting or for propelling astern. A hydraulic pump may be used instead of the screw. In other embodiments a single faired nozzle or a plurality of parallel nozzles are provided and the screw is omitted. Normal screw propellers are used for propelling astern. The jet propulsion unit may be used as the main propulsion means of a ship or as an auxiliary propulsion means.