baber/WOPTO huggingface dataset:
Patent GB-1310802-A (GB)
Title: Difficultly inflammable polyurethanes and process for making them
IPC: C08G18/50
Filed: 1971-05-28
Abstract: 1310802 Phosphorus - containing polyols KNAPSACK AG 28 May 1971 [23 July 1970] 17912/71 Heading C2P [Also in Division C3] Phosphorus-containing polyols of the formula wherein a is 0 or 1 provided that it must be 1 at least once in the molecule, n is 0 to 4, R 1  at least once is a halogenated hydrocarbon and at least twice is a hydroxyl-containing radical of the formula -(CHR 3 -CHR 4 -O) m -H and R 2  is a radical of the formula -(O-CHR 3 -CHR 4 ) m -, R 3  and R 4  representing a hydrogen atom or a C 1-6  optionally halogen-substituted hydrocarbon radical and m is 1 to 10, may be prepared by reacting a halogenated alcohol or phenol with P 2 O 5  and/or polyphosphoric acid, followed by reaction of the resulting product with an epoxide or by reacting a halogenated phosphite or phosphate with polyphosphoric acid or a mixture thereof with P 2 O 5 , followed by reaction of the resulting product with an epoxide. In examples, polyols are produced by reacting (1) tris - 2 - chloroethyl phosphate with a mixture of P 2 O 5  and polyphosphoric acid followed by reaction of the product with ethylene oxide, (2) tris-2-chloroethyl phosphite and polyphosphoric acid followed by reaction of the product with ethylene oxide, (3) 2-chlorethanol and P 2 O 5  followed by reaction of the product with ethylene oxide, and (4) tris-2-chloroethyl phosphate and a mixture of polyphosphoric acid and P 2 O 5 , followed by reaction of the product with propylene oxide. The polyols may be used in the preparation of polyurethanes (see Division C3).
Patent GB-596016-A (GB)
Title: Improvements in or relating to machines for testing gears
IPC: G01B5/20
Filed: 1945-07-13
Abstract: 596,016. Testing gears. KODAK, Ltd. July 13, 1945, No. 17971. Convention date, July 13, 1944. [Class 106 (ii)] A gear-testing machine includes a gear-testing tool mounted to move on a slideway provided on the base of the machine, and an arm hinged to a post movably mounted on the base, the angular position of said arm with respect to the slideway being determined by a gauge means including a post extending upwardly from the base and carrying an accurately formed sleeve provided with an accurately formed surface which extends axially of the gauge post and engages a second arm carried by and extending from the movable post. As shown, the base 1 has a V-shaped pair of rails 3, beneath which is an undercut slideway 5 in which runs a slide 6, provided with a handle 17 and the movement of which is limited by stops 7 and 9. A pin upstanding from the slide 6 engages in a notch in a gear-testing tool, shown as a master worm section 15, which slides in the rails 3. A gear G to be tested is supported in a holder carried by an arm 28 mounted by means of ball bearings on a member 60 carried by a post 29 which may be elevated or lowered by a hand wheel 61. A pad 20 is formed at one end of the worm section 15 to define the elevation of its pitch circle, and a pad 52 on the gear holder similarly defines the theoretical pitch circle of the gear to be tested. The arm 28 carries a pad 31 which is contacted by the feeler of a dial gauge 33 which may be initially set to zero when the pads 20, 52 on the worm section and gear holder are in contact. The worm section may then be moved along the slide by means of the handle 17 when inaccuracies in the teeth of the gear will deviate the dial gauge pointer. In order to maintain the gear at the correct angle to the worm section, the post 29, on which the arm 28 is carried, also carries an arm 64 having a spherical extremity which engages in one of a number of grooves in a sleeve 67 slidably mounted on a vertical post. The grooves, which are of different depths, may bear indications to correspond to similar indications on different worm sections and a number of interchangeable sleeves may be provided. The arm 28 may be retained in an inoperative position by means of a latch which may be released by raising a lever 80. The inclination and elevation of the dial gauge feeler 32 may be adjusted by means of a clamping screw 45 and elevating nut 40, Which may be locked by a screw 44, respectively. The gear holders may be of the types described in Specification 596,017. Specification 577,218 also is referred to.
Patent GB-954418-A (GB)
Title: Improvements in and relating to the gasification and combustion of liquid hydrocarbons
IPC: F23C99/00
Filed: 1962-05-10
Abstract: 954,418. Burners. W. BRODLIN. May 10, 1962 [May 17, 1961], No. 17976/62. Heading F4T. A method for the gasefication and, if desired, subsequent combustion of liquid fuel wherein the fuel is sprayed into a non- rotational conical air stream around the apex of which is formed a toroidal vortex generated by the air stream and ignited in an oxygen deficient atmosphere to form a pre-combustion flame 15 and the mixture which flows on in the direction of the spray is derived as a combustible gas or burns with a blue flame 17 depending on the relative mass flow of the fuel, atomizing air and combustion air. A compressed air oil atomizer nozzle 1 sprays the fuel into a cylindrical or conically converging burner tube 2. The lower portion of which forms the reaction chamber into which the nozzle 1 fits tightly and the upper portion forms a burner orifice. The length of the burner is such that the conical spray 3 impinges in the burner wall which is provided with combustion air aspiration ports 7 in the section between the impingement region and the nozzle 1. The ports 7 are so dimensioned that a sub-atmospheric pressure prevails in the aforesaid section inside the burner 2 where the pre-combustion flame 15 surrounds the nozzle 1. A ring 16 is provided to control the air supply through the ports 7, or the ports may be encased by a distribution chamber into which air is adjustably supplied. A needle valve controls the oil supply and a reduction valve controls the atomization air supply to the nozzle 1. In other embodiments the combustion air may be supplied as atomization air or may be aspirated through the burner orifice. In a further embodiment for a welding torch, the fuel is atomized with oxygen and the reaction chamber is shaped to prevent the aspiration of air through the burner orifice and to the lower portion of the flame 17 which is shielded by a bell-shaped configuration integral with the atomizer nozzle. The burner tube 2 is made of a ceramic material externally reinforced with a heat resisting steel.
Patent GB-369815-A (GB)
Title: Improvements in and relating to printing devices
IPC: B41L47/02
Filed: 1931-06-22
Abstract: 369,815. Printing - surfaces. POLLAK, J. E., 20, Holborn, London.- (Addressograph Co. ; 901, West Van Buren Street, Chicago, U.S.A.) June 22, 1931, No. 18043. [Class 100 (ii).] A printing-plate 24 is provided with sinuous edges to facilitate the insertion of the plate into engagement with the retaining devices 18 .. 21 on the holder frame 10. The projections on one edge of the plate are opposite to the depressions on the other edge. A record card 15 is also mounted on the frame 10.
Patent GB-694792-A (GB)
Title: Improvements in or relating to electrical apparatus for controlling cyclic operationof multi-unit apparatus
IPC: B03C3/66
Filed: 1950-07-20
Abstract: 694,792. Timed control of electric circuits. POWER-GAS CORPORATION, Ltd., and WRIGHT, G. July 20, 1951 [July 20, 1950], No. 18104/50. Class 118 (ii) [Also in Group XXXVII] Relates to apparatus for governing the sequential operation of units of an automatic dust extraction plant in which dust-laden gases are passed through fabric bags into an exhaust chamber, the apparatus comprising a number of chambers below each of which is a hopper. The chambers are taken out of operation by closing an exhaust valve which is driven by a torque motor, and an oscillatory motion is imparted to the bags by gear driven by another electric motor. After completion of the shaking operation the exhaust valve is opened. A pre-determined interval after initiation of operation a timer motor 11 closes contacts 13 by means of cam 12 so energizing relay IT and disconnecting clutch 16 to uncouple the cam from the motor. A relay 2T is thereby energized to operate relay 1ST and complete a circuit to another timer motor STM which drives cam switch 20. When relay 1ST is energized it opens contacts 1ST4 to release relay IT. Rotation of cam switch 20 closes switches CS1, CS2, to energize relays 1PR and VA. Relay 1ST is then deenergized to stop the motor STM and contacts 1ST4 are closed to re-engage the clutch 16 and cause unit 10 to measure a second time interval. Operation of relay VA energizes torque,.motor VMA to close the exhaust valve of the first unit 30 until a limit switch is operated to stop the torque motor and energize a contactor SA to start the shaker motor SMA, relay 2ST being energized at the same time. The timer motor STM is then re-started and, after a pre-determined time interval, contacts CS2 are opened to disconnect the shaker motor SMA and reverse the torque motor VMA to open the valve, the torque motor afterwards being stopped by means of a limit switch. The timer motor STM continues to operate and is subsequently stopped by the opening of cam switch SC1. The cam switches CS2-CS5 are closed in succession and, as each is associated with a particular unit 30-60, each unit is brought into operation in turn. If the starting of one of the shaker motors is delayed due to failure of a torque motor to complete the closing movement of its associated valve, the closure of relay 1ST (due to re-operation of the contacts 13) is delayed until the cam switch has completed its movement, the motor STM being kept in operation for this purpose. Inter-changeable sets of gears may be provided between the motor STM and the cam switches CS1-CS5. Overload on a shaker motor causes disconnection of that motor but the operation of subsequent units is not interrupted. Push-button switches APBDPB enable any of the units to be taken out of operation if so desired. Specification 693,352 is referred to.
Patent GB-352681-A (GB)
Title: Process for producing asbestos and mineral artificial fibres
IPC: D02G3/20
Filed: 1930-06-13
Abstract: 352,681. Artificial mineral fibres and threads. LUDKE, W., 10, Storbeckstrasse, Stettin, Germany. June 13, 1930, No. 18148. [Classes 120 (i) and 120 (iii).] Artificial, asbestos-like mineral fibres are obtained from water glass, ammonium silicate and similar soluble silicates and silicate mixtures bv spinning into suitable coagulating liquids and gases. The devices and processes used are such as are used in the artificial silk industry. To the silicate solutions may be added mineral salts, double salts, complex salts, and other compounds such as hydroxides. For producing aluminium silicate threads, sodium aluminate or other aluminium salt is added to the water glass. Magnesium silicate threads are similarly obtained with water glass and a magnesium salt. Calcium, tin, and zinc silicate threads are similarly obtained. Compound silicate threads may be obtained by the use of suitable mixtures such as water glass to which an aluminate and zinc oxide are added. The thread formation is facilitated by the addition also of such substances as sugar, dextrin, glucose, gum arabic and glycerine. Suitable salts, acid salts and acids may be used as precipitating baths, and a large variety of organic liquids, or their vapours, such as acetone, alcohols, phenols, esters, aldehydes, especially formaldehyde, acid chlorides, hydrocarbonates, or mixtures thereof with or without added acids or acid vapours may be used as coagulating means. Dry spinning may be effected in heated inert gases such as air, nitrogen, and hydrogen. Very thin threads are obtained by winding on bobbins under tension. The threads are subjected to a stabilizing process by heating in the presence of water or steam. Electrolytes may be used instead of pure water, or steam under pressure to which is added gases or vapours such as nitrogen, hydrogen, alcohol, &c. These liquids, gases or vapours may be circulated through the autoclaves in which the material is treated.
Patent GB-676371-A (GB)
Title: Improvements in multi-stage cased screw-propeller fans, compressors, pumps and the like
IPC: F04D29/54
Filed: 1949-07-08
Abstract: 676,371. Screw fans &c. MACARD SCREWS, Ltd., and TAYLOR, E. S. W. July 8, 1949 [July 13, 1948; June 25, 1949], Nos. 18164/49. Drawings to Specification. Class 110(i). The reaction is of the order of 100 per cent or greater, and the inlet guide vanes impart positive whirl (i.e. opposite to direction of rotation) to the fluid; each set of rotor blades reverses the direction of whirl to a negative value, the interstage guide vanes again reverse the direction of whirl to a positive value, and the outlet guide vanes discharge the fluid axially; the geometric pitch of the rotor blades of at least the first stage is constant from tip to hub, with the mean geometric pitch coefficient greater than 0.5. The inlet guide vanes are of the impulse type, the interstage guide vanes provide reaction at their entry ends and impulse at their discharge ends, and the outlet guide vanes are of the reaction type. The whirls at entry to and discharge from each set.of rotor blades are substantially equal in magnitude, but opposite in direction, varying inversely with the radial distance from the axis of rotation. The rotor blades and interstage guide vanes are such as to produce constant effective pitch (which is infinite in the case of the interstage guide vanes) from tip to hub, which may necessitate a variation of geometric pitch from tip to hub to compensate for an increasing angle of attack. The inlet and outlet guide vanes are advantageously of decreasing geometric pitch from tip to hub. The width and crosssectional area of the rotor blades may increase from tip to hub, except at the high pressure end, where they may be constant. To maintain a constant aspect ratio, the width of the rotor blades may decrease from inlet to discharge, the number of rotor blades per stage increasing inversely to this decrease to prevent undue leakage at the blade tip clearance. Alternatively, the flow passage may be cylindrical at the discharge end or even over its entire length, the mean geometric pitch of the rotor blades decreasing along the cylindrical portion in inverse relation to the increase of fluid density or fluid acoustic velocity, whichever increase is the smaller. This reduction of geometric pitch is preferably such that the mean value of the ratio of axial velocity to peripheral speed is limited to a range of say, 1.6 to 1.7 at the suction end to 0.2 to 0.3 at the discharge end. The relative curvature and relative thickness of the rotor blade profiles may be constant or increase from tip to hub. Some or all of the guide vanes may be rotatably mounted. Specifications 512,487, 515,469, 587,518 and 644,319 are referred to.
Patent GB-182286-A (GB)
Abstract: 182,286. Graham, E. A., and Brockies, A. C. May 25, 1921. Addition to 14220/14. Tickets and tokens, issuing ; registering number of.-To frustrate a fraudulent attempt to hold back the pivoted member o engaging the check or token e about to be issued and serving to actuate the counter s, the member s is formed with a lug o', which, when the member is held back, engages either a recess g<2> or a notch g' in the ejecting slide g, according to the position of the slide, and prevents its movement.
Patent GB-202472-A (GB)
Title: Improvements in and relating to automatic carburettors for internal combustion engines
IPC: F02M3/09
Filed: 1922-07-03
Abstract: 202,472. Rodriguez, I. July 3, 1922. Addition to 127,579. Spray carlurettors.-The parent Specification describes a carburettor in which air admitted to a preliminary mixing chamber is controlled by a valve or shutter carried by a lever mounted on the spindle of the throttle valve, and adapted to close the air passage as the throttle is opened. According to the invention, the shutter has an inclined face which coacts with an inclined face of the air-inlet pipe to close the air inlet at and only at the fully-open position of the throttle valve. Fuel is supplied to chamber 4, Fig. 2, through a constricted orifice in a plug 8 and is mixed with air entering by a pipe 6 before issuing into the mixing chamber 3 through orifices 7 in a tubular member 2. A duct 18 leads to a slowrunning nozzle 19 which communicates with the induction passage through duct 17 and apertures 16, 20, Fig. 3. Air to the tube 6 is admitted by a duct 5, Fig. 4, adapted to be closed by a shutter 15 on the spindle of the butterfly throttle 13 when the latter is fully opened. The air may be independently controlled by a plug valve 21, Figs. 2 and 4, which by means of a port 25 and recess 26 may also control additional air to the slow-running nozzle 19. The opening of the throttle valve is limited by a screw 30. Specification 153,506 is referred to.
Patent GB-1384341-A (GB)
Title: Magnetogram carriers
IPC: G11B5/72
Filed: 1972-04-20
Abstract: 1384341 Magnetograms FILMFABRIK WOLFEN VEB 20 April 1972 18308/72 Heading B2E A filamentary magnetogram carrier comprises a core of a magnetisable powder and a non-magnetic envelope. The magnetisable core may be γ-Fe 2 O 3 , CrO 2  or a ferromagnetic metal powder. The magnetisable core may additionally contain a synthetic plastics material as binding agent. The non-magnetic envelope may include a polymeric material which dries physically or is hardenable by chemical or thermal means, or by means of high energy radiation. The magnetograms may be made by spinning hollow filaments to be filled with a magnetisable powder or by homogenising a magnetisable powder with a binding agent (e.g. a polyvinyl compound, a polyurethane, a polyamide or a polyester), extruding the mixture through a die e.g. a ceramic permanent magnet and envelopping the product in a synthetic plastics material. Such processes may be continuous. If desired the envelope may be applied in monomeric form and subsequently polymerised or crosslinked.
Patent GB-915664-A (GB)
Title: Gas-discharge tubes
IPC: H01J17/26
Filed: 1961-05-19
Abstract: 915,664. Discharge tubes. TESLA, NARODNI PODNIK. May 19, 1961 [May 27, 1960], No. 18319/61. Class 39 (1). A hydrogen replenisher comprises a substance 8, capable of absorbing hydrogen, or binding it chemically, enclosed in a tubular metallic hood 7 which has an open end sealed to a hydrogenfilled discharge tube 4, and a closed end projecting therefrom so as to be in direct contact with the ambient atmosphere. The gap between the substance 8 and the hood 7 is of the order of ten times the mean free path of hydrogen molecules at the operating pressure, or less. The hydrogen-containing material may be Ti, Ta, Zr, La, Ce, Th or Pd or a hydride thereof, and may be in the form of a tubular body 8 or a helical or spiral wire, or may be in powder form in a tubular body made of another metal. As shown, the tubular hood 7 is sealed through the base 2 of a thyratron or tacitron together with contact pins 5, 6 and may itself constitute a contact pin. The hydrogen-containing tube 8 is supported by spacing rings 10, 11, ring 11 being porous. The hood 7 may be artificially cooled to maintain a temperature difference of 300‹ to 400‹ C. between tube 8 or hood 7. One or more tubular heat screens may be interposed between tube 8 and hood 7, Fig. 2 (not shown), the gaps between tube 8, the screens and hood 7 each being of the order of, or less than, the mean free path of the hydrogen molecules at the operating pressure which may be 0.4 Œ 0.1 mm. of Hg.
Patent GB-631497-A (GB)
Title: Improvements in or relating to apparatus for feeding powdered or granular substances
IPC: B01F15/02
Filed: 1947-07-11
Abstract: 631,497. Feeding-devices for granular and like materials. PRICE, D. G., and GARDNER & SONS (GLOUCESTER), Ltd., W. July 11, 1947, No. 18418. [Class 78 (i)] A combination of parts comprising a feed apparatus for powdered or granular substance and a container for such substance, entry to the feed apparatus from the container is provided by way of a port situated in the side of the container and the feed apparatus is dependent from or surmounted by a hopper-like part applied to the container over the port, the container has movable elements which urge the substance into the hopper-like part through the port so that the substance piles up so as to lie substantially at its natural angle of repose, and the hopper-like part acts as a charging hopper for the feed apparatus. As shown, the aperture 6 is situated in the side of the container 2 to which is connected the hopper 7 surmounting the teed apparatus 1. The aperture is adjustable by a valve member 8. The valve is slidable in guides by the displacement of a rod 10 which is pivoted at 11 to a lug on the valve and is screw threaded at its upper end and has a micrometer nut 13 applied to it for obtaining the required aperture. The feeder and hopper 7 are provided with flanges 17, 18 by which they are bolted together. The substance being fed is urged through the aperture 6 by blades 3 on arms 4 mounted on a shaft 5 revolving within the container so that the substance piles up in the hopper 7 ensuring a substantially constant head of substance in the hopper independent of the head of substance in the container and therefore ensures greater accuracy in volume of discharge. A vertical mixer may be used and a vertical blade 16 on feeder shaft 14 driven by means 20 is provided to agitate the feed substance at the bottom of the hopper. The part 7 may have an upper end shield to prevent dust dispersal. Specifications 10606/89, 22522/11, 19415/12, [all in Class 86], and 551,590, are referred to.
Patent GB-562564-A (GB)
Title: Improvements in and relating to apparatus for laying cables and the like below ground level
IPC: H02G1/06
Filed: 1942-12-30
Abstract: 562,564. Cable-laying ploughs. COUNTY OF LONDON ELECTRIC SUPPLY CO., Ltd., and GOODCHILD, H. J. F. Dec. 30, 1942, No. 18533. [Class 6 (i)] Steering-gear is provided on a cable-laying plough towed by cable from remote power means. The cable-guide 5 and coulter with its leading edge of hardened steel are supported between brackets 3 attached to the rear plate 2 of the main framework 1. Threaded spindles 11 passing through nuts fixed to the plate 2 are each connected to the upper end of a vertical lever arm 12 connected at its lower end to a tie rod 13 preferably bv means of a universal joint 14. At their forward ends the rods 13 are connected through links 15 to a shackle plate attached to the towing cable. Separate hand wheels 17 may be used to adjust the spindles 11, or there may be joint actuation by a single hand wheel through an intervening cross-shaft geared to both spindles. The tierods 13 may also be connected to the leading wheels 18 of .the framework by rods 23. On the main frame 1 is mounted a frame 40, 41 for supporting the cable reels.