baber/WOPTO huggingface dataset:
Patent GB-919412-A (GB)
Title: Polyolefin films
Inventor: BIRTLES ROY HAMER
IPC: C08J7/052
Filed: 1960-09-27
Abstract: A film of a linear crystallizable polymer of an a -olefine having at least 3 carbon atoms, having no substantial degree of molecular orientation, is heat set at a temperature below its melting point. Preferably the a -olefin has 3-6 carbon atoms. Polypropylene may be heat-set at 100 DEG -170 DEG C., especially 150 DEG -170 DEG C.  The non-oriented film may be made by melt-extrusion and quenching.  To reduce haze in the heat-set film, the composition used to make the film may comprise from 0,01-5%, preferably 0,1-1%, of a crystallizable additive having a melting point above that of the polyolefin and a cohesion energy per chain unit not more than 1,000 cals./mole different from that of the olefin polymer.  Such crystallizable additives include polyamides, e.g. nylon-11, nylon 6-10 and nylon 6-6, isotactic poly-3-methyl butene-1, and polytetrafluoroethylene.  Other additives which may also be present include high melting waxes, slip agents, e.g. oleamide, antistatic agents, e.g. 1-(hydroxyethyl)-2-n-alkyl glyoxalidines, antioxidants, dyes, pigments, lubricants and ultra-violet light stabilizers.  The heat-set film may also be coated with a heat-seal coating, preferably after oxidative treatment of the film to improve the bonding properties of its surface, e.g. by corona discharge, ultraviolet, X- or Y-irradiation, flame treatment, or oxidation with nitric or chromic acid.  The coatings may be applied as solutions in organic solvents or as aqueous dispersions which are dried at temperatures of 100 DEG -150 DEG C.  Specified heat-seal coatings include vinylidene chloride/acrylonitrile copolymers which may contain other monomers, e.g. itaconic acid.  Slip agents, e.g. calcium carbonate, magnesium carbonate, polyvinyl chloride, polypropylene or high melting waxes, e.g. hydrogenated castor oil, stearamide, hydroxy-stearamide and ester type waxes may be incorporated into or applied on to the films themselves or into or on to the heat seal coatings.  Crystallizabl additives, e.g. the substituted glyoxalidines mentioned above may be incorporated in the coating compositions.  Films so treated have a high degree of dimensional stability.  Specifications 715,914, 802,975, 822,498 and 903,661 are referred to.
Patent GB-925659-A (GB)
Title: Improvements in windscreen wipers
Inventor: SMITHERS PHILIP GEOFFREY KENT
IPC: B60S1/38
Filed: 1958-10-17
Abstract: 925,659. Windscreen wipers. TRICOFOLBERTH Ltd. Oct. 16, 1959 [Oct. 17, 1958], No. 33248/58. Class 138 (1). At least one end of a windscreen wiper harness is provided with a terminal member so shaped that it will deflect away from the harness and from the windscreen any air flowing longitudinally towards the harness during operation of the wiper. The terminal member 8, which may be of resilient plastic material provided with a recess 10 to receive an end of the harness, is formed with air deflecting surfaces 16 meeting in an extension of a plane of symmetry of the harness.
Patent GB-900152-A (GB)
Title: Process for cementing materials or articles
Inventor: BRUEGGEMANN HORST
IPC: C08G69/18
Filed: 1960-09-28
Abstract: Polyamides used as cements are formed in situ by the alkaline polymerization of single or mixed lactams at temperatures up to 280 DEG C.  The preferred lactams are caproic, caprylic, oenanthic, or lauric, the first two being used singly or mixed together in various proportions and the two latter being used in mixtures as minor constituents.  Known alkali carriers and activators are included in the compositions and lists of these are given. Cross-linking agents, e.g. methylene-bis-caprolactam, may also be included. Polymerization, with or without heating, may be controlled by applying the lactam melts in two parts, containing the alkali carrier and the activator respectively, or by applying the activator separately in solution.  Specifications 900,150 and 900,151 are referred to.
Patent GB-1322228-A (GB)
Title: Method of strengthening a glass article and a strengthened glass article
IPC: C03C21/00
Filed: 1970-07-09
Abstract: 1322228 Ion-exchange treatment of glass articles ASAHI GLASS CO Ltd 9 July 1970 [10 July 1969] 33267/70 Heading C1M A method of strengthening a glass article comprises substituting sodium ions present in the surface layer of the glass article by potassium ions at a temperature between 350 C. and the strain point, wherein the article comprises by weight 60-75% SiO 2 ; 4-15% Al 2 O 3 ; 0-3% TiO 2 ; 0-3% ZrO 2 ; the total of SiO 2 , Al 2 O 3 , TiO 2  and ZrO 2  constituting 70-82% of the composition; 4-10% K 2 O, 8-15% Na 2 O; 1-8% RO; where RO represents at least one divalent oxide selected from the group consisting of 0-8% MgO, 0-8% ZnO and 0-2% CaO, PbO, BaO, SrO or a mixture thereof and 0-4% B 2 O 3 . May be used for plain or curved glass sheet, glass ware or laminates with unstrengthened or strengthened glass.
Patent GB-826656-A (GB)
Title: Purification of hydrocarbons
IPC: C07C9/16
Filed: 1956-10-31
Abstract: Hydrocarbons containing sulphur-bearing compounds and obtained by the reaction of isoparaffins with olefins in the presence of sulphuric acid are purified by contact in the liquid phase with an alumina, an inorganic silicate or a mixture of inorganic silicates such as aluminium and/or magnesium silicates. Preferably at least 70% of the sulphuric acid is first removed. Activated alumina or bauxite containing not more than 10% by weight of water is the preferred adsorbent.  The adsorbent may be p  regenerated as described in Specification 826,657.
Patent GB-1155158-A (GB)
Title: Electric Connector Assemblies
IPC: H01J5/56
Filed: 1967-07-20
Abstract: 1,155,158. Making ferrules. GENERAL MOTORS CORP. 20 July, 1967 [1 Aug., 1966], No. 33336/67. Heading B3A. [Also in Division H2] Ferrules 20 for use in making soldered connections to electrical terminals are shaped by punches 60 operated by compressed air. The preformed ferrules are fed on a feed track 56 of the shaping machine, and the punches with appropriately shaped heads 62 are driven upwards through an opening in the feed track to drive them against plate 58 to shape them. An arm 64 is cyclically operable to position the ferrules above the punches and to allow them to move forward on the track 56 after the ferrule heads have been formed and the punches retracted.
Patent GB-663705-A (GB)
Title: Improvements relating to ambulance gear for ambulance vehicles
IPC: A61G3/00
Filed: 1948-12-30
Abstract: 663,705. Stretcher supports for ambulance vehicles. SOUTHERN, H. SOUTHERN, sen. P., and SOUTHERN, iun., P., (trading as SOUTHERN BROS.). Jan, 19, 1950 [Dec. 30, 1948], No. 33469/48. Class 108(i) A stretcher support for use with a motor ambulance vehicle comprises longitudinal supports 1 of angle or channel section mounted at the front on long links 2, and at the rear on links 3, 4 and 9 pivoted together in parallelogram formation, the links 4 being extended to form a handle frame 5. In the normal stretcher supporting position shown in continuous lines in Fig. 1, the links 2 are inclined forwardly and the longitudinals 1 are horizontal. By pulling on the handle 5 the longitudinals and the links are moved to the dotted line position so that a stretcher may be placed on or removed from the inclined support from the lower end. Cross stays between the links 2 or parts of the links themselves engage with C-shaped spring clips, (not shown), mounted on the floor 7, which clips reduce vibration of the support but release it when the handle 5 is pulled rearwardly. In Figs. 3-5, (not shown), the links 2 are of L-shape whilst at the rear end of the support there is only a short link 3 on each side.
Patent GB-605003-A (GB)
Title: Improvements in or relating to gas turbine plants
IPC: F02C9/18
Filed: 1945-12-11
Abstract: 605,003. Gas turbines. MASCHINENFABRIK OERLIKON. Dec. 11, 1945, No. 33505. Convention date, Jan. 27. Drawings to Specification. [Class 110 (iii)] In a continuous combustion gas turbine plant an additional expansion stage in a separate casing is introduced into the gas circuit for low loads. This stage may be a turbine on the admission side of the air-compressor or a turbine stage added in front of or behind the turbine. The stage may be provided with several separate admission segments, the number of segments in use being reduced as the low load decreases. The volume flow through the plant may be regulated by varying the area of the fixed passages in the compressor.
Patent GB-1074009-A (GB)
Title: Process for the production of dispersions of highly dispersed oxides in mineral oils
Inventor: KLEIN KURT
IPC: C10L1/12
Filed: 1964-08-17
Abstract: In a modification of the process of the parent Specification, the amine contained in the mineral oil dispersion is a heterocyclic amine of formula <FORM:1074009/C1/1> wherein R1 is an alkyl group of from 6 to 20 carbon atoms and R2 is any substituent.  The preferred amine is 2-stearyl-1-hydroxyethyl-imidazoline.
Patent GB-1156576-A (GB)
Title: Improvements in or relating to Transfer Elements
IPC: B41M5/10
Filed: 1967-07-21
Abstract: 1,156,576. Non-curling transfer paper. COLUMBIA RIBBON & CARBON MFG. CO. Inc. 21 July, 1967 [10 Oct., 1966], No. 33612/67. Heading D2B. A flexible cellulose paper sheet is treated with liquid methoxy polyethylene glycol, alone or in solution in water, methyl ethyl ketone, ethyl acetate, methanol, ethanol or a mixture of water and methanol, the solvent allowed to evaporate and the treated sheet coated with a pressure-sensitive transfer layer such as a resinous ink releasing layer. An oleophilic wax or resinous undercoating layer may be applied before the transfer layer, and a back coating may be applied to the opposite surface of the sheet. Any coating in contact with the treated paper must be a non-solvent for the glycol to prevent this being leached out of the paper, Dyes, pigments, opacifying fillers or anti-static compounds may be included in the glycol solution. In an Example, tissue stock treated with methoxy polyethylene glycol in water and methanol is coated with vinyl - chloride - vinyl acetate copolymer in ethyl acetate, as a binding undercoat, and then with an ink-releasing layer formed from a composition of vinyl chloride-vinyl acetate copolymer, mineral oil, carbon black, toluol and ethyl acetate.
Patent GB-336254-A (GB)
Abstract: 336,254. Dunkerley, J. July 6, 1929. Crank chambers.-In a two-stroke-cycle engine using crank case compression, the space inside the usual trunk piston is occupied by a shell in order to reduce the clearance within the chamber and thereby increase the volume of charge delivered to the combustion chamber. The transfer passage is enlarged in comparison with the construction to allow easy flow of the charge.
Patent GB-829021-A (GB)
Title: Improvements in separation of butadiene from hydrocarbons by extractive distillation
IPC: C07C7/08
Filed: 1956-11-05
Abstract: <PICT:0829021/III/1> In a process for separating butadiene from a mixture of hydrocarbons by extractive distillation the flow of the extractive solvent to the distillation zone, where butene-1 is being separated from the butadiene, is controlled in response to the butene-1 concentration determined at a selected position at the butadienerich end of the zone to maintain the butene-1 concentration below a predetermined maximum at that position.  A feed stream comprising the effluent from a butane dehydrogenation zone, with substantially all the C3 and lighter hydrocarbons removed, is fed through line 1, which is controlled by ultra-violet controller 9, into fractionator 2 from which butene-2 and heavier material is removed via line 5. Butadiene and lighter material which leaves fractionator 2 by line 4 is led via line 13 into the 50th tray of a 100-tray distillation column 14, which is supplied with furfural through line 26. Butene-1, isobutane, isobutylene and some butene-2 leave column 14 via line 15, while the furfural stream, containing the butadiene, passes to stripper 21 via line 20.  The stripped furfural is returned from stripper 21 to column 14 via line 26 through valve 34, which is controlled by recorder controller 32 which measures the flow at 33.  Recorder controller 32 is regulated by an analytical recorder controller 31, e.g. of the infra-red type (see Group XL (b)) which continuously detects the butene-1 concentration on a selected tray below the feed inlet of column 14, e.g. the 24th. Butadiene, with minor amounts of butenes and acetylenes, leaves stripper 21 via line 22 and passes through line 38 to a 120-tray fractionator 37, from which butene-2 and heavier materials are removed via line 47.  Butadiene and the lighter acetylenes pass from fractionator 37 via line 40 to accumulator 42, from which methylacetylene rich vapours are bled through valve 46.  A controller 52, similar to 31, detects the butene-2 or total olefine content on a selected tray in fractionator 37 and controls valve 49 which determines whether the butadiene runs to storage via line 48 or to recycle via line 43.  A modification for acetylene-rich vapours entering fractionator 37 is described in which an extra analytical recorder controller detecting the acetylenes content is used below, and in conjunction with, recorder 52.  The Specification mentions several other solvents which may be used to replace the furfural.
Patent GB-507010-A (GB)
Title: Improvements in or relating to lighting fittings
IPC: B64F1/20
Filed: 1937-12-07
Abstract: 507,010. Resilient posts. GENERAL ELECTRIC CO., Ltd., and ROBINSON, G. S. Dec. 7, 1937, No. 33860. Addition to 445,388, [Group XI]. [Class 20 (i)] [Also in Group XI] In an illuminating device for marking aerodrome boundaries, for traffic control &c., as described in the parent Specification, the support 1, having a diffusing surface, is formed of rubber or other resilient material so that it will bend over upon impact therewith of an aircraft or other body and tend to recover its normal position after passage of the aircraft &c. The support 1 is secured to a flanged plate 3 carried by a tube 5 in the base.
Patent GB-357412-A (GB)
Title: Electrical control of movable knives employed in pile cutting machines, and control of operations relating thereto
IPC: D03D39/24
Filed: 1930-11-11
Abstract: 357,412. Finishing fabrics. HAVANNAH MILLS CO., Ltd. and ROGER, G., Havannah, Congleton, Cheshire. Nov. 11, 1930, No. 33903. [Class 42 (i).] Pile, cutting.-In a pile cutting machine of the cord and pulley type the wire or other guides 19 for the knife carriage form part of the electric system for controlling the operation of the machine. As shown, the carriage 1 is pulled to and fro by a cord 21 which passes round pulleys 22 on blocks slidable across the machine, one pulley 22 being provided with a brake 42 and driven by a belt 34 through a clutch 32 from the main belt 5. The ends of the cord 21 are attached to arms 23, 24, the former of which carries a contact 25 to connect contact arcs 27, 28 and 29, 30. A contact plate on the knife holder 2 connects contacts 12, 13 when the pressure of cutting is normal, but at other times open the circuit through the two wires 19 and the clutch 32. At the end of each stroke of the carriage the circuit through the brake is closed through a projection 31 or 17 and a contact on the machine frame and the arms 23, 24 are pulled round one of the pulleys 22. On the non-cutting traverse of the carriage the clutch circuit is kept closed through the contacts 25, 29, 30, the contacts 12, 13 not then being connected. Specifications 119,846 and 213,723, [both in Class 42 (i), Fabrics, Finishing &c.] are referred to.
Patent GB-899235-A (GB)
Title: Improvements in or relating to piezoelectric accelerometers
Inventor: AMES GERALD JAMES
IPC: G01P15/09
Filed: 1959-10-06
Abstract: 899,235. Piezo - electric accelerometers. GENERAL ELECTRIC CO. Ltd. Jan. 5, 1961 [Oct. 6, 1959], No. 33904/59. Class 40 (1). [Also in Group XL (b)] A piezo-electric member in an accelerometer is generally cube-shaped and is mainly stressed by its own mass. Cube 1 of ceramic barium titanate is provided with vacuum-deposited silver electrodes 5, 6, to one of which is soldered a flexible lead wire 7, and the other of which is soldered to a plane surface of the article being accelerated. The surface is of metal and has a lead wire 11, electrical connection between the surface and electrode 6 being either direct or capacitative. In a modification the electrodes are formed on two of the side faces (Fig. 2, not shown), a non-silvered face being glued to the test surface and the corners of the cube being slightly ground away to prevent short-circuiting. In a third embodiment (Fig. 3, not shown) the cube is glued to a metal base provided with a threaded portion. The output may be amplified and fed to an oscilloscope.
Patent GB-181399-A (GB)
Title: Process for rust-proofing articles of iron and steel
IPC: C23C8/16
Filed: 1920-12-02
Abstract: 181,399. Andrews, E. P. Dec. 2, 1920. Coating. - In a rust-proofing process, ferrous metal articles are dipped in oil, coated with magnetic oxide by passing through a furnace maintained at 650‹ C., then immersed in preferably cotton-seed oil, placed in sawdust and further cleaned by an air blast. If subjected to a shaping-tool, a stream of cotton-seed oil with or without kerosene is thrown upon the point of application of the tool. The articles are preferably carried by a table h through the successive stages. After immersion in the oil tank a, the articles are introduced for about twenty minutes in a chamber c<2> of the furnace, into the longitudinal combustion chambers c<6> of which air and gas are introduced through pipes c<4> and mixing-nozzles c<5>. The nozzles are so inclined that the incoming mixture draws in air through the furnace door and a proper oxidizing atmosphere is maintained. Combustion products are removed through pipes c<2>. A pyrometer m enables the temperature to be kept constant. While still hot the articles are immersed six or eight times in cotton-seed oil in the tank d to fix the coating, and are then transferred to the receiver e containing sawdust, after which they are subjected to an air blast issuing from nozzles at a pressure of 75 lb. per sq. in. above atmospheric. Reference has been directed by the Comptroller to Specifications 862/76, 94/97, 15852/12, and 129,831.
Patent GB-856161-A (GB)
Title: Improvements in or relating to containers with carrying handles
Inventor: SCOTT JOHN BROWN
IPC: B65D25/32
Filed: 1957-11-01
Abstract: 856,161. Making pivoted handles; seamed joints. WILKIE & PAUL Ltd. Oct. 31, 1958 [Nov. 1, 1957], No. 34102/57. Classes 83 (2) and 83 (4). [Also in Group XVII] A method of mounting on a container a whistle-ear 8 having an outwardly extending peripheral flange 9 comprises locally upsetting, without perforation or depression, the container material when in the form of a blank to form an outwardly projecting ridge 6 around the intended whistle-ear location and within which the whistle-ear fits, locating the whistle-ear in position, and subsequently clinching the upper portion of the ridge over said whistle-ear flange. After initially forming an annular ridge, as shown in Fig. 1, the inner wall of the ridge is rendered vertical as in Fig. 2 to enable the whistle-ear to be more easily located. The ends of a wire handle 10 are inserted in apertures 11 in the whistle-ears.
Patent GB-845779-A (GB)
Title: Improvements in or relating to high and low water alarms for boilers
Inventor: COLLINS HAROLD LANCASTER
IPC: F22B37/42
Filed: 1957-11-01
Abstract: 845,779. Indicating liquid levels. HOPKINSONS Ltd. Oct. 31, 1958 [Nov. 1, 1957], No. 34124/57. Class 123(1) A high and low level alarm for high, critical and supercritical pressure boilers consists of two double thermostatic units 1, 2 for high and low indication respectively. The high level alarm unit 1 consists of two steel tubes 3, 4 connected at one of their ends to a block 5, the other ends being sealed and mechanically linked by a strap 6 upon which is mounted an operating lever 7. Attached to the block 5 is a switch plate 8 carrying two switches 9, 10. The low level alarm unit 2 is similarly constructed and comprises tubes 11, 12, a block 13 in two parts, a strap 14, an operating lever 15 and switches 17, 18. The blocks 5, 13 are respectively connected by tubes 19, 20 and common connections 21, 22 to the steam and water spaces of the boiler drum. The units 1, 2 are so disposed that the lower tube 4 of the unit 1, which is lower than the upper tube 11 of the unit 2, is at the high alarm level whilst the tube 12 of the unit 2 is at the low alarm level. During operation at the normal water level the tubes 3, 4, 11 are filled with steam and the tube 12 with water, all switches then being open. Should the water in the drum rise, the tube 4 becomes flooded and contracts causing the lever 7 to tilt upwardly and close the switch 10 to actuate the high level alarm. If the level falls, the lower tube 12 empties and expands causing the lever 15 to tilt downwards and close the switch 18 to actuate the low level alarm. Switches 9, 17 are closed when the equipment is cold to give an indication that it is out of action.
Patent GB-190489-A (GB)
Title: Improvements in thermionic valve amplifying systems
IPC: H01J25/52
Filed: 1922-12-14
Abstract: 190,489. British Thomson - Houston Co., Ltd., (Assignees of Becker, H. I.). Dec. 14, 1921, [Convention date]. Thermionic relays and repeaters.-An amplifying-system for varying electric currents, such as those flowing in the aerial circuit of a wireless receiving-apparatus, comprises two or more magnetically-controlled thermionic valves connected in cascade and with electromagnetic or electrostatic reaction between the output side of one of the valves and the input side of the first valve. Fig. 2 shows one circuit arrangement for wireless reception. The valves A, B each contain an axial filament 2 and a cylindrical anode 4, and are surrounded by direct-current coils 5, 6. The first valve A is controlled bv a coil 11 connected across a condenser 10 in the aerial circuit. The anode circuit of this valve is energized by a source 8 and includes a coil 12 surrounding the second valve B. The anode circuit of the valve B includes a coil 13 coupled to a tuned circuit which may react on to the coil 25 in the aerial circuit. As shown in Fig. 2, the tuned circuit is coupled to an intermediate circuit, which is coupled to the aerial coil 25. The intermediate circuit includes a coil 20 wound on the second valve, and two condensers, 26, 27, which serve for phase adjustment. The output circuit may be coupled to the coil 22 or to the coil 18. In a modification shown in Fig. 3 employing electrostatic reactive coupling, the upper ends of the coils 11, 20, 14 are connected by condensers 33, 32, the connection to coil 20 including a switch 35. The magnetic coupling between the coils 12, 20 is supplemented by a capacity coupling 30, and that between coils 13, 14 by a capacity 31.
Patent GB-895727-A (GB)
Title: Chain connectors for double-chain scraper conveyors and a method of manufacturing the chain connectors
IPC: B65G19/24
Filed: 1958-10-27
Abstract: 895,727. Chain connectors for scraper conveyers. GEWERKSCHAFT EISENHUTTE WESTFALIA. Oct. 27, 1958 [Dec. 21, 1957; Jan. 11, 1958], No. 34358/58. Class 78 (1). A chain connector 1 for connecting the round links of the chains of a scraper conveyer, is of the type wherein the scraper blade is secured thereto by a bolt through apertures 4 and wherein the adjacent links of the chain pass round and through the legs 2 and is characterized in that the wearing part 8 is secured to the connector body by a part 50, the length of which approximately equals the cross-sectional diameter of connector body. Alternatively, the wearing part 50 may be a separate part secured to a projection formed on the connector body. The connector may be made as a forging or casting.