baber/WOPTO huggingface dataset:
Patent GB-1220053-A (GB)
Title: Foamed thermoplastic polymers
Inventor: EALDING CYRIL JOHN
IPC: B29C44/34
Filed: 1967-01-23
Abstract: 1,220,053. Foamed thermoplastic polymers. IMPERIAL CHEMICAL INDUSTRIES Ltd. 23 April, 1968 [23 Jan., 1967], No. 3362/67. Headings C3C and C3P. A foamed thermoplastic polymer is produced by releasing pressure from a pressurized homogeneous mixture of the molten polymer and a mixture of two blowing agents, e.g. in an extruder, the first agent being completely miscible with the molten pressurized polymer, which is a solvent for the polymer at the temperature and pressure of the mixture, and which has a b.p at least 10‹ C. below the temperature of the mixture, and the second different blowing agent having a solubility of at least 0À01% by wt. in the polymer and a critical temperature less than the temperature of the homogeneous mixture when the pressure is released. The polymer may be polyethylene or a styrene/maleic anhydride copolymer and the foamed product may have a density of 0À05-0À5 g./c.c. The blowing agent may be a mixture of (1) petroleum ether, pentane or methyl ethyl ketone and (2) carbon dioxide or nitrogen. The foamed product may be used to form bed linen, clothing, wallpaper, pipes, posters or a writing or printing base.
Patent GB-271934-A (GB)
Title: Improvements in electric lamp holder locking devices
IPC: H01R33/97
Filed: 1926-02-05
Abstract: 271,934. White, E., A., (Representative of White, J. C.). Feb. 5, 1926. Holders.-In devices for locking bulbs in holders, of the kind wherein the contact plungers 2 are locked by obstructing the movement of pins 14, 15 secured to them, a pair of cam-shaped blocks 10, 11 are arranged to be moved into the path of the pins 14, 15 by turning a screw 9, access to which is obtained through a series of peculiarly shaped apertures 17 in the casing. The screw is made of such length that when the blocks are drawn together its end enters one of the apertures 17 and so prevents the parts of the casing from being unscrewed.
Patent GB-130554-A (GB)
Title: Improvements in or connected with Valve-gear for Internal Combustion Engines.
IPC: F02F7/00
Filed: 1919-02-12
Abstract: 130,554. Tylor & Sons, J., and Butcher, A. C. Feb. 12, 1919. Valve-gear.-In an engine in which the crank chamber and the cylinders are formed in a single casting, the valve-rods are guided in detachable members h secured to bosses f on the cylinders- The members h and the valve-rods may be removed through an inspection opening closed by a cover d.
Patent GB-388922-A (GB)
Title: Improvements in or relating to postal packets
IPC: B65D27/04
Filed: 1932-02-05
Abstract: 388,922. Letter-sheets &c. NORDON, C. L., 56, Moorgate, London. Feb. 5, 1932, No. 3474. [Class 146 (ii).] A letter-sheet A is provided towards the lower right-hand corner with a panel delimited by lines A<1> .. A<4> and within the panel a lesser area delimited by lines A<5>, A<6> for the reception of an address, the letter-sheet being received in an envelope B having in its face, towards the right-hand corner, a window dimensioned to conform to the larger area in the panel and in a corresponding position, so that when the letter-sheet, either unfolded or folded, is inserted in the envelope, the panel will be correctly located with the address visible in the window, whilst movement of the letter-sheet in the envelope which may take place will neither obscure the address nor render visible any matter not appearing in the larger panel. The window may be formed by cutting out a portion of the envelope face, or the latter may be treated in known manner to render a portion thereof transparent.
Patent GB-1485683-A (GB)
Title: Helicopter rotor blade
IPC: B64C27/46
Filed: 1975-01-27
Abstract: 1485683 Helicopter rotor blades UNITED AIRCRAFT CORP 27 Jan 1975 [8 April 1974] 3476/75 Heading B7W A helicopter rotor blade comprises a spar 14 extending over the majority of the blade span and having a chordwise major axis, and an aerofoil-shaped structure 16 surrounding the spar and having a chordwise major axis, the aerofoil structure and spar major axes defining therebetween an angle which is such that, when the blade is operating at the mean angle of its operating angle range, the spar major axis is at a zero angle of attack. The blade may be untwisted or twisted, in the latter case the particular mean angle would occur at some span location, e.g. the 75% station.
Patent GB-524634-A (GB)
Title: Improvements in the manufacture of organic acid esters of cellulose
IPC: C08B3/22
Filed: 1939-02-02
Abstract: 524,634. Cellulose esters. BRITISH CELANESE, Ltd. Feb. 2, 1939, No. 3509. Convention date, Feb. 2, 1938. [Class 2 (ii)] Cellulose organic esters are stabilized by incorporating with a solution of the cellulose ester prepared in presence of a mineral acid catalyst, an amount of a magnesium salt of a weak acid sufficient to neutralize all or substantially all of the acid present, allowing the solution to stand until the ester has an increased heat test and then separating the magnesium salt of the catalyst from the ester by incorporating water with the solution in an amount sufficient to form a liquid medium which is a non-solvent for the ester and a solvent for the magnesium salt. The catalyst may be sulphuric acid, methyl hydrogen sulphate, sodium bisulphate, or a mixture of sulphuric and phosphoric acids. Stabilization may be effected after ripening. The magnesium salt may be introduced in a solution of the same solvent as that employed in the cellulose ester solution, e.g. in aqueous acetic acid. The magnesium salt may be an acetate, carbonate, or citrate, or it may be commercial magnesite after removal of matter insoluble in acetic acid.
Patent GB-730182-A (GB)
Title: Improvements in or relating to the production of ingredients for foodstuffs
Inventor: BEZZANT NORMAN
IPC: A23J3/18
Filed: 1952-02-11
Abstract: Wheat or rye flour in water is inoculated with an emulsion prepared as described in Specifications 695,145 or 704,549 and allowed to stand, e.g., for 10 hours, at a temperature between 28 and 36 DEG C., preferably between 31 and 33 DEG C., to yield a proteinaceous emulsion suitable for use in preparing bread, sausage meat, salad cream and custard.  Dextrin may be added.
Patent GB-1206234-A (GB)
Title: Process for the production of porous articles from finely particled polyethylene and articles obtained according to this process
IPC: B29C67/20
Filed: 1968-01-24
Abstract: 1,206,234. Porous aricles of polyethylene. PLAST-LABOR S.A. 24 Jan., 1968 [25 Jan., 1967], No. 3637/68. Headings C3C and C3P. Porous articles are produced by mixing particulate polyethylene with a water-soluble material which does not attack the polyethylene, melts above the sintering temperature of the polyethylene and has the same particle size as the polyethylene, sintering and dissolving out the water-soluble material. The polyethylene preferably has a particle size of less than 800 microns and may be used in from 20 to 30% by weight of the mixture. The water-soluble material may be sodium chloride. The sintering is preferably effecting by heating the mixture in a mould having thin walls to a temperature above the melting point of polyethylene. The mixture may be placed in a mould having a porous bottom through which hot air is caused to pass. The sintered material may then be soaked in water to remove the water soluble material, and dried. In the examples, finely divided polyethylene is mixed with common salt, sintered and the salt dissolved out of the mass with water.
Patent GB-1299751-A (GB)
Title: Modifying the piston reciprocation in prime movers
Inventor: KRESS HERWIG
IPC: F02G1/053
Filed: 1970-01-26
Abstract: 1299751 I.C. engines with hydraulic drives H KRESS 26 Jan 1970 [27 Jan 1969] 3641/70 Heading F1B In a prime mover, e.g. an I.C. engine, in which the reciprocating motion of the working piston 2, Fig.1, is -converted into rotary motion of mainshaft 9 by the action of a quantity of interposed liquid 6, e.g. oil, on a sealed eccentric 8, the effective quantity of the liquid between transmission piston 4 and eccentric 8 can be varied cyclically by a control piston and cylinder arrangement 11, 12, or by moving a wall portion 7 or varying the total quantity of liquid present. In a two-stroke engine, the piston 12 may be driven, e.g. by the engine, at twice engine speed and commence its liquid extraction strokes slightly before, after or when the piston 2 commences its downward and upward strokes, to cause the piston 2 to spend longer in the bottom region of its cylinder 1. In a four-stroke engine the length e of crank 16 may be reduced cyclically at half engine speed to reach zero or a negative value as the piston 2 completes its exhaust stroke, so that the latter is effectively shortened to prevent the piston from fouling the valves. In an alternative embodiment, Fig.2 (not shown), a double-acting transmission piston (4a) attached to working piston (2), has both ends of its associated cylinder communicated through passages (18, 19) with both ends of cylinder 11a containing a double-acting control piston (12a), and with the spaces at both sides of a sealed eccentric (8). In either embodiment the control piston may be housed in the eccentric.
Patent GB-192612-A (GB)
Title: Improvements in apparatus for raising or displacing liquids
IPC: F04F1/06
Filed: 1922-02-08
Abstract: 192,612. Bentum, L. O. Feb. 8, 1922. Direct air-pressure apparatus, automatic; valves for pressure fluid, actuation of; valves for pressure fluid, arrangement of.-Central apparatus for controlling the supply of compressed air to a number of oil wells or other liquid-raising chambers 10 comprises a number of air valves 13 - - 16, connected to a common air-supply pipe 17 and to the oil wells &c. by pipes 2 - - 5. Another air-valve 19 is connected to the pipe 17 and through a non-return valve 37 to a chamber 36, which contains liquid and communicates with a chamber 38 through flow and return pipes 39, 42, provided with cocks 40, 43 and non-return valves 41, 44. The air-valves are normally open and are closed in turn by the intermittent rotation of a number of discs 21 - - 25 adapted to be rotated one-eighth of a revolution when a weighted piston 45 in the cylinder 38 is raised by the liquid forced from the cylinder 36 by compressed air. The piston rod engages a lever 48 carrying a toothed quadrant 50 in mesh with a rack-bar 51. The bar 51 carries a pawl engaging a ratchet-wheel 27 on the spindle 26 of the discs 21 - - 24, so that, when the bar 51 is moved to the left during the rise of the piston 45, the discs are rotated one-eighth of a revolution thereby disengaging pawl arms 31 - - 35 from recesses in the discs 21 - - 25 and closing the air-valves. At the same time, a projection 57 on the bar 51 engages a lever 56 and opens a valve 54 to exhaust the cylinder 36 and allow the piston 45 to descend. During the descent of the piston the exhaust-valve 54 closes and a spring pawl 53 on the piston rod turns the dises through another eighth of a revolution to allow the air-valve of another chamber 10 to open. While the air-valve of a chamber is closed, the chamber fills in the liquid through a valve 12. The liquid is delivered through a pipe 9. By adjusting the opening of the cock 40, the duration of the air supply to each chamber 10 may be varied, and by adjusting the cock 43 the intervals between the air supplies, to the various chambers may be varied.
Patent GB-967886-A (GB)
Title: Improvements in wire guiding means for cabling machines
IPC: D07B7/02
Filed: 1963-01-30
Abstract: 967,886. Stranding machines. SYNCRO MACHINE CO. Jan 30, 1963 [June 26, 1962], No. 3860/63. Heading D1T. Where a plurality of cabling machines are arranged in series so that each can be used to manufacture an individual cable or, when necessary, can jointly be used to manufacture a large cable on removal of the forming dies and take up drums of all but the last cabling machine, the resulting gaps between the machines are occupiable by a plurality of pivoted arms 24, each arm 24 carrying a rotatable strand guiding and supporting disc 20 which, in one extreme setting of the arm 24, has its axis aligned with that of the machines. The strand guiding discs 20 are all driven in synchronism from a common shaft 25 by chain and sprocket means. The discs 20 thus support the strands as they pass from one machine to the next and avoid the use of the heavy tubing that is conventionally used in said gaps to guide said strands. When no longer required, the discs 20 are removed by swinging the arms 24 upwardly about the shaft 25.
Patent GB-570366-A (GB)
Title: Aircraft heating apparatus
IPC: B64D13/08
Filed: 1943-03-10
Abstract: 570,366. Heating aircraft. McCOLLUM, H. J. D. March 10. 1943. No. 3920. Convention date. Nov. 19, 1941. [Class 64 (ii)] [Also in Group XII] A heating system for an aeroplane or the like having an internal combustion engine provided with two superchargers operating in series to supercharge the engine comprises an internal combustion heater, a carburettor therefor, a conduit for conveying air under pressure to the carburettor therefor, a conduit for conveying air under pressure to the carburettor from that one of the superchargers which is first in the series, and a blower for forcing a combustible mixture of liquid fuel and air from the carburettor to the heater. As shown, air under pressure is discharged from the exhaust turbodriven supercharger 10 through a conduit 12 to a carburettor 14 (preferably of the balanced float bowl type), the combustible mixture from which is supplied through a conduit 16 to the inlet of an engine-driven supercharger 18 supplying the mixture under pressure to the engine. The conduit 12 has a branch 20 leading to the carburettor 22 (preferably of the balanced float bowl type) supplied with petrol from the tank 23. The mixture is conveyed by the conduit 26 to the blower 24 (preferably of the positive displacement type) driven by the internal combustion engine 28 receiving mixture from the blower 24 by the conduit 30 having a throttle valve 35. A by-pass conduit 32 having a manually operable valve 34 is provided between the inlet and outlet of the blower 24. The conduit 30 has a branch leading to a header 36 to which are connected conduits 38 leading to heater units 40, 41 and 42 each including a motor 44 operating a fan 50 for circulating air past the heat exchanger of the unit and also an electrical resistance wire igniter 52 controlled by a thermostatically operated switch 54, which may be a snap micro-switch operated by a bimetallic member. The motors 44 and igniters 52 are supplied with current through main conductors 55 connected to a source of current under control of a manual switch 56. The heaters have discharge conduits 58 exhausting to a point on the outer wall of the aeroplane fuselage at which a partial vacuum is present when the aeroplane is in flight. These conduits 58 may have a restriction to supply sufficient back pressure.
Patent GB-788666-A (GB)
Title: Improvements in or relating to arrangements for mounting electrical components
Inventor: HARRISON WILLIAM ARTHUR
IPC: H05K7/14
Filed: 1955-02-11
Abstract: 788,666. Making brackets. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Feb. 10, 1956 [Feb. 11, 1955], No. 4087/55. Class 83(2). A sheet metal bracket 23, Fig. 3, comprising two portions bent at right angles along a straight line AA, Fig. 1, has at least one rectangular slot 11 provided prior to bending adjacent to the bending line AA so as to produce a sharp corner 24, Fig. 5 (not shown) after bending. Two brackets 23 preferably form part of the frame of a telephone transmission unit and are secured to a tag board 15 and also to parallel mounting rails 19 by screws 16 and clamps 20, Fig. 5 (not shown).
Patent GB-197052-A (GB)
Title: Improvements in and relating to electric time switches
IPC: G04C23/24
Filed: 1922-02-13
Abstract: 197,052. Clifton, J., Robinson, J., and Spencer, J. Feb. 13, 1922. Clockwork actuation.-A switch V for lighting and extinguishing lamps at predetermined times is actuated by reciprocations of a rod j connected to a crank on an escapement member c which makes a half-turn on an axle a<1> when released from engagement with a pivoted latching member i. Two or more non-resilient tappets g. h carried by a twelve-hour wheel e and adjustable over a ring of ratchet-teeth, move. the latch out of engagement at set times, the first half-turn of the escapement closing the switch and the second opening it. The escapement is reset by a handle a<2>. In a modification, the tappets are carried on a 24-hour wheel and the latch is released twice in each revolution for several successive revolutions without resetting. The clock and tappet mechanism is contained in the front portion of a hinged case, the switch being contained in the back portion.
Patent GB-1140994-A (GB)
Title: Improvements in or relating to the production of patterned woven fabrics
IPC: D03D1/00
Filed: 1967-01-27
Abstract: 1,140,994. Woven fabrics. SOC. NEYRET FRERES et CIE. 27 Jan., 1967 [9 Sept., 1966; 24 Nov., 1966], No. 4215/67. Heading D1K. In a fabric woven from ground warp and weft and having a figuring left bound on the surface by binder warp threads which also take part in the ground weave, the binder threads are thin and are transparent or translucent, so that the colour of the figuring weft shows through them at the binding points. The binder threads may be monofils or strips cut from transparent cellulose sheet.
Patent GB-682051-A (GB)
Title: Process for the production of a non-plastic sulphur
IPC: C08K3/06
Filed: 1951-02-21
Abstract: A non-plastic sulphur is produced by incorporating with a sulphur mass before or after melting between 0.5 and 1.5 per cent by weight of one or more saturated or unsaturated fatty acids of high molecular weight and comprising a chain of at least 10 carbon atoms or salts or substitution products thereof, heating the mixture to above 200 DEG C. but substantially below 444 DEG C. and preferably between 200 and 300 DEG C., and thereupon cooling the molten mass, e.g. by metal cooling rolls.  Suitable additions are zinc stearate or olein.
Patent GB-623363-A (GB)
Title: Improvements in or relating to submersible electric motors
IPC: H02K5/128
Filed: 1945-02-20
Abstract: 623,363. Submersible motors. HAYWARD, TYLER, & CO., Ltd., HOWARD, G. P. E., and IVANOFF, V. Feb. 20, 1945, No. 4269. [Class 35] In a submersible motor in which the ambient liquid has access to the interior of the motor casing the squirrel cage rotor 1 is completely enclosed in a shell, preferably of steel, which protects the conductors and laminations from corrosion. The shell comprises end discs 60 secured, preferably by welding, to a sleeve 59 and to the rotor shaft 5. Specification 623,369 is referred to.
Patent GB-1400862-A (GB)
Title: Production of hydrogen fluoride
IPC: C01B7/19
Filed: 1973-01-29
Abstract: 1400862 Ammonia: hydrogen fluoride: calcium fluoride FITZWILTON Ltd 17 Aug 1973 [24 Aug 1972 29 Jan 1973 24 April 1973 21 May 1973] 39400/72 4373/73 19378/73 and 24149/73 Heading C1A Ammonium fluoride is hydrolysed to ammonia and hydrogen fluoride by heating in solution with an excess of a soluble metal fluoride capable of forming a bifluoride, whereby ammonia is released and the metal fluoride reacts with the HF to form the corresponding bifluoride, which is recovered from the solution substantially free from ammonia, and the recovered bifluoride is decomposed by heating to form HF. The soluble metal fluoride may be an alkali metal fluoride, particularly potassium fluoride, and the weight ratio of fluoride ions to ammonium ions is greater than 2À5 to 1. The excess of KF used may be such that the crystallized solids comprise a mixture of KF and KHF 2 , the bifluoride content being in the range from 95 to 35%. Water should be removed continuously from the system, thus carrying out the reaction at the boiling point. The solid product may be decomposed at a temperature within the range 250 to 600 C. If desired the KHF 2  may be converted into NaHF 2  which decomposes into NaF and HF at lower temperatures than the KHF 2 . The ammonia produced may be introduced into the off gases containing hydrofluosilicic acid from a phosphonic acid plant, silica separating out and ammonium fluoride being formed. The liquid phase from the hydrolysis step may if desired be reacted with calcium carbonate to produce calcium fluoride which in its turn may be used as a source of hydrofluoric acid.
Patent GB-1083983-A (GB)
Title: Improvements in or relating to telecommunication exchange systems
IPC: H04M3/523
Filed: 1965-02-02
Abstract: 1,083,983. Automatic exchange systems. SIEMENS A.G. Feb. 2, 1965 [Feb. 3, 1964], No. 4398/65. Heading H4K. A call queuing arrangement which provides a separate queue for each outgoing traffic direction employs a number of queuing switches which share the same multiple and take up successive positions as calls arrive. When the call at the head of the queue is extended, the switches corresponding to later calls advance one step, and similar action occurs if an intermediate call is abandoned. Instead of providing separate queuing switches for each direction, multi-wiper switches may be used with wiper selection, or the switches may be selectively connected to different multiples corresponding to the several directions.
Patent GB-738489-A (GB)
Title: Improvements in press guards of hydraulic or pneumatic presses
Inventor: BAGG ALBERT EDWARD
IPC: B30B15/28
Filed: 1952-02-20
Abstract: 738,489. Machinery guards. INDUSTRIAL GUARDING EQUIPMENT, Ltd. May 18, 1953 [Feb. 20, 1952], No. 4424/52. Class 80 (4). A guard for a hydraulic or pneumatic press comprises a transparent screen 2 of a thermoplastic material supported on pairs of upper and lower levers 4 pivoted at 5 on both sides of the press. The pairs of levers 4 are connected at the rear by counterpoises 6 to bias the guard into the open position. On one side of the press a pivoted control member 7, which actuates a valve (not shown), for supplying fluid under pressure to the ram of the press, is adapted to be operated through a lostmotion connection 10, 11 by a link 12 coupled to the lower lever 4. A scotch 16 also on the lower lever 4 engages a foot 15 on the member 7 so that operation of the control member 7 and hence the supply of pressure fluid to the ram is prevented whilst the guard is open. On closing the guard by means of a handle 17 on the front thereof the scotch 16 disengages from the foot 15 and after the lost-motion at 10, 11 is taken up the link 12 operates the control member 7 to supply pressure to the ram.
Patent GB-764662-A (GB)
Title: Improvements in or relating to vertical spray type gas scrubber with vertical gas flow
IPC: B01D5/00
Filed: 1955-02-16
Abstract: 764,662. Gas scrubbers. KOPPERS CO., Inc. Feb. 16, 1955 [Feb. 17, 1954], No. 4669/55. Class 55 (2). In a gas-scrubber, the gas admitted at 12 rises, in counterflow to downwardly sprayed liquid, in unpacked spray-chambers 10, the liquid being collected at the bottom of each chamber by a tray 27 having a central gas channel 30 and a downcomer to take overflow to the tray next below, the gas being redistributed over the section of the chamber 10, whilst being contacted with descending liquid, by a perforated plate or plates 23, the sprays 18 being spaced from the plate, or topmost plate, 23 at a distance greater than the distance between the said plate and the tray 27. The liquid is prevented from falling directly through the channel 30 by a cap 34, and a de-mister 33 of woven or knitted wire prevents excessive entrainment of liquid from one chamber 10 to another. The liquid is recirculated from each tray 27 to the same chamber 10, the fresh liquid, which would be de-benzolized straw oil if the apparatus is used for removing benzole from coal gas, being admitted to the nozzles 18 of the top or final washing chamber which is surmounted by a de-misting chamber leading to the gas outlet pipe. The re-circulating pumps, individual to each chamber 10, are situated at ground level.