baber/WOPTO huggingface dataset:
Patent GB-1474728-A (GB)
Title: Recovery of isoprene
IPC: C07C7/167
Filed: 1974-08-22
Abstract: 1474728 Recovery of isoprene GOODYEAR TIRE & RUBBER CO 22 Aug 1974 [3 April 1974] 36934/74 Heading C5E Isoprene is recovered, as its azeotrope with n-pentane, from a hydrocarbon stream comprising isoprene, n-pentane and other C 5  hydrocarbons by subjecting the stream to two successive high efficiency distillations, firstly to remove components which are more volatile than the azeotrope as an overhead fraction and secondly to separate the azeotrope as an overhead fraction from a bottom fraction comprising the other hydrocarbons which are less volatile than the isoprene/n-pentane azeotrope. The isoprene-n-pentane mixture can be used to produce cis-1,4-polyisoprene. Acetylenes can be removed from the azeotrope product by hydrogenation or treating with sodium in the presence of an aliphatic alcohol. 1,3-Cyclopentidiene can be removed from the azeotrope product by (a) treating with maleic anhydride and removing the maleic anhydride-1,3-cyclopentadiene adduct by washing with aqueous caustic or flash distillation, or (b) treating with sodium in the presence of an aliphatic alcohol. The hydrocarbon feed can be produced by the steam cracking of naphtha and can be pretreated by being held in a tank under conditions favouring the dimerization of the 1,3-cyclopentadiene so that it is removed more completely during the subsequent distillations.
Patent GB-1275238-A (GB)
Title: Improvements relating to the production of marked control tickets
IPC: G06K5/00
Filed: 1969-05-11
Abstract: 1275238 Cutting apparatus DENNISON MFG CO Ltd (Dennison Mfg Co) 11 May 1969 37122/71 Divided out of 1260149 Heading B4B [Also in Divisions B8 and G4] A continuous strip 20 of ticket parts is divided into one, two, three or four-part tickets by severing mechanism comprising a bar 242 carrying punches or a knife edge, the bar being journalled in L-shaped slots in arms 241-a, Fig. 4, and 241-b, Fig. 5. A bed 221 rises for each ticket part, the bar 242 rising with the bed if the journal pins are in the vertical portion of the L- shaped slots, thereby preventing severing, but being held for severing action if a solenoid 244, Fig. 5, is energized to urge the pins into the horizontal portions of the slots. The number of parts per ticket is controlled by punched cards in conjunction with timing pulses from a timing cam assembly 250, Fig. 4. Pulses from the card reader (640, Fig. 2A) enter a sever divide network (420, Figs. 2B, 12, 12A) in binary form wherein a gate control network (421) supplies signals direct, for single-part tickets, or through a shift network (423, Fig. 12) including a pair of clocked flip-flops (423-1, 423-2) receiving clock pulses from the timing cam assembly 250, for multiple part tickets, to an output network controlling energization of the solenoid 244.
Patent GB-798809-A (GB)
Title: Improvements in or relating to television receivers
Inventor: FISHER DONALD HENRY
IPC: H04N5/53
Filed: 1954-12-23
Abstract: 798,809. Television. PYE, Ltd. Dec. 16, 1955 [Dec. 23, 1954], No. 37194/54. Class 40 (3). In a television receiver, Fig. 1, intended to operate with a negatively modulated signal and wherein the detector (not shown) is directly coupled to the cathode-ray tube T via a video amplifier V1, so that in the absence of a signal the raster returns to peak white, the tube is biased by brightness potentiometer VR1 so that the beam is just cut off when no signal is being received and a voltage proportional to the black level is derived in response to a received signal and applied to the tube as a counter bias. The voltage is derived by a circuit similar to the automatic-gain-control circuit disclosed in Specification 777,801, [Group XL (c)], wherein the video signal at the output of a cathode follower V2, through which the video amplifier V1 is connected to the cathode of the cathode-ray tube, is sampled during the black level period adjacent each line synchronizing pulse by a diode V3 receiving pulses at its anode derived from the line scan circuit. The output from the anode of diode V3 is applied to the anode of a diode V4 where the sampled signals are rectified and the output smoothed by a time constant circuit RC. The resulting voltage is then applied as bias to the grid of the cathode-ray tube via cathode follower V5. The output from diode V3 is also connected to the grid of a triode amplifier V6 supplying an automatic-gain-control rectifier. A silicon carbide resistor SC may be connected across potentiometer VR1. In a modified circuit, Fig. 2 (not shown), the bias voltage is derived from the anode of stage V5 and applied to the cathode of the cathode-ray tube. Reference is made to an arrangement for sampling at frame frequency to derive the voltage proportional to black level.
Patent GB-844569-A (GB)
Title: Magnetic tape driving mechanism
IPC: G11B15/43
Filed: 1958-11-19
Abstract: 844,569. Magnetic recording &c. apparatus. AMPEX CORPORATION. Nov. 19, 1958 [Nov. 22, 1957], No. 37297/58. Class 40 (2). [Also in Groups XVI and XXXV] To enable rapid stopping and starting of a magnetic tape in the vicinity of the capstans 31, 34, chambers 14a, 14b are provided into which loops of tape are drawn by suction and automatic means maintain the length of the loops constant. In the steady state, the tape follows the path 11, 28, 26, 4a, 5a, 27, 29, 31, 32, 77 and correspondingly in the chamber 14a to the spool 12. The tape may be driven in either direction according as one or other of the pinch rollers 32, 33 is engaged with the tape. A detailed description of these rollers and their operation is the subject of Specification 844,568. Suction is applied at 40a and 40b in each chamber and, the radii of the half-loops 4a, 5a being defined by the width of the chambers in the regions 16, 17 respectively, a symmetrical disposition of the loops is obtained, due to the equal tape areas then projected towards each end of the chambers. Slots 38, 39 are partly in communication with suction at their outer ends, and partly in communication with the atmosphere in the region 14b. An intermediate pressure, which is a measure of the length of the tape loops is communicated by manifolding to a transducer (Fig. 6, not shown), which controls electronic means by which, in turn, the spool motors are driven so as to maintain constant the tape loop lengths.
Patent GB-793367-A (GB)
Title: Improvements in or relating to textile spinning machines
Inventor: AMBLER GEOFFREY HILL
IPC: D01H1/06
Filed: 1954-12-24
Abstract: 793,367. Cap and ring spinning frames. AMBLER SUPERDRAFT, Ltd. Dec. 15, 1955 [Dec. 24, 1954], No. 37302/54. Class 120(2) Conversion equipment for application to a cap spinning frame to enable the frame to be used for ring spinning comprises a ring rail, lifter spindles to carry the ring rail, guide brackets for the lifter spindles adapted to be secured to stationary rails of a cap spinning frame, lifting gear for the lifter spindles, and connecting gear to enable such lifting gear to be operated in conjunction with but oppositely to the lifting gear for the lifter rail for the whorl tubes of the cap spinning frame, so as to produce a building motion that is compounded of the similar but opposite motions of the whorl tubes and the ring rail. The arrangement shown (Fig. 4) illustrates a cap spin ning frame in use for cap spinning provided in addition with further lifter spindles 26 carried by brackets 27 supported on stationary rails 3, 17 the top of the spindles 26 being provided with brackets 36 capable of receiving a ring rail 35 (as seen in Fig. 5). The lift motions for the ring rail lifter spindles 26 is provided in a similar manner to that for the lifter spindles 15 and consists of chains 33 passing over pulleys 32 and connected to ring chain rod 30. This in turn is connected by a chain 29 to the pulley 28 which thus gives a motion to the ring rail 35 similar to but opposite in direction, to the rail 14. To change from cap spinning to ring spinning the caps 6 are removed together with extensions 4 of the spindles 2 and the ring rail 35 is positioned on the brackets 36. A spindle brake consisting of a plate 39 with a forward finger grip extension 40 and cranked at 41 is provided such that by lifting the plate 39 and moving it forwards, the spindle is lifted such that flanges 46 on the spindle are brought into contact with a metal strip 44 carrying a friction pad 45 and mounted on standards 43 between alternate pairs of spindles.
Patent GB-523083-A (GB)
Title: Improvements relating to composite materials or articles such as composite packing, gaskets, tubular joints and the like
IPC: F16J15/10
Filed: 1938-12-23
Abstract: 523,083. Coating non-metallic surfaces with metals. WILKINSON. F. C. W. Dec. 23, 1038, No. 37512. Drawings to Specification. [Class 82 (ii)]. [Also in Group XXVI] Packing or jointing materials or components thereof or articles such as gaskets made therefrom are coated, prior to or during making or assembly with a protective metal applied by spraying molten metal. The coating applied to the outer surface of an article may produce a complete metal sheath.
Patent GB-971666-A (GB)
Title: Process for the production of acrylic acid and/or methacrylic acid
Filed: 1962-10-04
Abstract: Acrylic acid and/or methacrylic acid is/are prepared by reacting propylene and/or isobutylene with molecular oxygen at between 300 DEG and 450 DEG C. in the presence of a catalyst containing molybdenum and oxygen in combination with cobalt and/or nickel, together with from 0.2 to 5% by weight of tellurium or a compound of tellurium (calculated as tellurium oxide).  The olefine feed may include paraffinic hydrocarbons such as propane or butane and the oxygen may be diluted e.g. as air.  The cobalt and/or nickel may be present as oxides, metallates, salts or heleropoly acids, e.g. cobalt and nickel molybdates, and the tellurium compound may be an oxide, acid or salt of the acid e.g. tellurium oxide. The catalyst may be on a support such as silica, alumina, silica-alumina, silicon carbide, clays and carbons, may include activators or promotors such as sulphur dioxide, halides, sulphur, arsenic and phosphorus and compounds thereof, and water vapour may be present.  Fixed bed or fluidized systems may be used and the unconverted reactants recycled.ALSO:Catalysts containing molybdenum and oxygen in combination with cobalt and/or nickel together with from 0,2 to 5% by weight of tellurium or a compound of tellurium are used for the reaction of propylene and/or isobutylene with molecular oxygen at 300-450  DEG C. to prepare acrylic and/or methacrylic acid.  The nickel and/or cobalt components are present as oxides, metallates or salts of heteropoly acids, e.g. cobalt and nickel molybdate, and the tellurium may be an oxide, acid or salt. The catalyst may be prepared by mixing in the dry state in a liquid medium followed by drying and calcination.  Conventional carriers, e.g. SiO2, Al2O3, SiO2-Al2O3, SiC and clays and carbon may be used as supports, and activators such as sulphur dioxide, halides and sulphur, arsenic and phosphorus compounds, and water vapour may be present.  In an example dried cobalt or nickel molybdate was admixed with dry tellurium oxide, pelleted and ground to 10/20 mesh size.
Patent GB-1200914-A (GB)
Title: Pump drive by means of a turbine
IPC: F01K25/02
Filed: 1967-08-16
Abstract: 1,200,914. Hot water supply systems; central heating systems. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. 16 Aug., 1967 [25 Aug., 1966], No. 37607/67. Headings F4A and F4U. [Also in Division F1] In a hot water circulation system, such as a district heating system, having a circulation pump 1 driven by a turbine 3 using the same working fluid, a heater 2 between the pump and the turbine heats the water to nearly its saturation temperature so that on expansion through the turbine some of the water evaporates into steam. The system includes a heat consumer 6, storage tank 7, motor-driven starting pump 9 and a by-pass line 5 from the pump outlet to inject water into the region 4 at the outlet of the turbine runner to condense the steam formed and thus prevent cavitation in the runner. Control of the water flow in response to water temperature or pressure is effected by controlling a by-pass around the turbine or by throttling the turbine outlet.
Patent GB-1199492-A (GB)
Title: Improvements relating to Wire Stranding Machines and like Cable Making Machines.
Inventor: ELLARD JOHN EDWARD
IPC: D07B7/16
Filed: 1967-08-21
Abstract: 1,199,492. Loading bobbins. BRITISH INSULATED CALLENDERS CABLES Ltd. 20 Aug., 1968 [21 Aug., 1967; 7 Aug., 1968], Nos. 38356/67 and 37709/68. Heading D1T. A bobbin-loading device, especially for a stranding machine having the bobbins supported on cantilevered arbors carried on a frame rotating about the stranding axis, comprises a table 20 for supporting a bobbin with its axis normal to the table and in alignment with an arbor 4 when in a dependant position; means for raising the table to be level with the end-face of a bobbin on the arbor 4; and a means movable relative to the table 4 for effecting release of a bobbin-retaining device when the table is in a raised position to allow the bobbin to be withdrawn from its arbor 4 as the table is lowered. As shown, the table 20 is raised and covered by a fluid-actuated main ram 21. A pneumatically acuated subsidiary ram 35 is used to release the bobbin by acting on plunger 16 and selfcatching latches 17. The latches may be as described in Specification 1, 192, 801. The rim of the bobbin is also engaged by fluid-actuated claws 28. If a non-self-latching device is used to retain the bobbin, there may be provided a means to open the bobbin-retaining device which is mounted on (or responsive to) the upward loading movement of the table 20. The table 20 may pass through a bobbin conveyor to receive or deposit a bobbin during loading or unloading of the arbor 4 as described in Specification 1,199,491. Alternatively the surface of the table may be provided with balls which enable a bobbin to be slid across the table into its position of axial alignment with the arbor. The fluid feed to the ram and claw activating cylinders may be controlled by a logic sequence circuit which does not permit the next step in the loading or unloading sequence to take place until there is sufficient pressure to release the latches or engage the claws, as the case may be. The position of the main ram 21 may be signalled to the logic circuit by magnetic .switches.
Patent GB-1059364-A (GB)
Title: Improvements in loading and weighing devices
IPC: G01G19/14
Filed: 1964-09-18
Abstract: 1,059,364. Load handling machines. A. PEARSON. Sept. 17, 1965 [Sept. 18, 1964], No. 38179/64. Heading B8H. [Also in Division G1] A device for weighing goods especially livestock, comprises a spring balance 33 movably mounted by a bell-crank lever 29 on a tubular steel structure 3 and, after engaging goods to be weighed with a hook 23 depending from the balance 33, weighing is effected by manuallyoperating a lever to tilt the bell-crank lever 29 and thereby to lift the balance 33 and raise the goods clear of the ground. The structure 3 may be attached by a U-shaped mounting element 16 and a cross-piece 19 provided with adjustable locating elements 21 to links 1 pivotally mounted on the rear end of a tractor so that after tilting the bell-crank lever 29 by means of a manually-operated lever 41 to weigh goods attached to the lifting hook 23, the links 1 are tiltable by actuating hydraulically-operated rams 2 to raise the structure 3 and thereby to raise the weighted goods for loading purposes. Alternatively, the structure may be mounted on the ground in which case a rod 37 connecting the bell-crank lever 29 to the lever 41 is detached and the bell-crank lever 29 is operated by levers 42 and 40, lever 40 being attached at one end to a pivoted lever 36 and positionable at the other end in a ratcheted guide 44. A cage may be provided attached to the hook 23 in which case a buffer beam 22 having rubber protectors 25 is provided on the structure 3 to prevent damage if the cage should swing.
Patent GB-1358017-A (GB)
Title: Mould assembly and containers produced therefrom
IPC: B29C45/36
Filed: 1972-08-17
Abstract: 1358017 Injection mould RICHARDSON CO 17 Aug 1972 38475/72 Heading B5A [Also in Division H1] A multi-partitioned container, e.g. a battery container 15 is injection moulded in a mould assembly comprising a core member 32 formed by a plurality of core sections joined together at one end, a cavity member 26 having injection ports 28 which are positioned adjacent the free ends of the core section when the mould is assembled, and stabilizing members 36 within the core sections extendable to engage the ports 28 (Fig. 9, not shown) to prevent displacement of the core sections while permitting the main injection to occur, and retractible thereafter to permit further injection to fill the space thus vacated. The stabilizing member 36 is moved by a rod 37 sliding through the core member 32 and receives the projecting port member 28 in a recess 39. The port has grooves 47, 53 to form runners for the material injected through passageway 51 which surrounds a heater 52. Alternatively the runners may be formed by passageways through the projecting port 28 or by grooves in the end of the stabilizing member 36, or the port may be recessed and the stabilizing member project into it.
Patent GB-327401-A (GB)
Title: Improvements in or relating to electric switches for controlling light and other circuits on motor vehicles
IPC: B60R16/00
Filed: 1928-12-31
Abstract: 327,401. Kavanaugh, H. E. Dec. 31, 1928. Controlling consuming devices. - A switch, adapted to cause suitable sequential operation of the lights and horn of a vehicle when another vehicle approaches is operated by a limited to and fro rotation of a handle 72 fixed to an annular member 40 which carries round with it during rotation one way, a second annular member 39 which can rotate one way only over a third fixed annular member 38. Rotation of the handle in one dirction, dims the head lights and finally cuts them out and puts in circuit parking lights and a spot light and also operates the horn towards the beginning and end of the movement. Rotation of the handle back again produces the reverse effect excepting that the spot light, which is alone operated by movement of the ring 39, remains on. The spot light may be extinguished by a second operation of the handle. The spot light 89 is operated by the movement of one or other of two arc-shaped segments 51, 52 on the lower face of the ring 39 into bridging engagement with two spring-pressed pins mounted in the fixed ring 38. The other circuits are all controlled by the rotation of the upper ring 40. The dimming of the head lights 90 is effected by a cam surface 76 inside the ring 40 pressing a spring arm 80 over sections 21 of a resistance coil wound on a core 15 inside the annular members. The ring 40 also has projections 74, 75 adapted to turn a lever 28 about its pivot 29 thereby bringing a bridging contact 30 or 27 into engagement with a pair of fixed contacts 31, 32 or 22, 26 and breaking the head light circuit and elosing the parking light circuit 91 or vice versa. Finally the ring 40 carries two metal pieces.53, 54 one or other of which bridges spring strips 57, 58 on the periphery of the core 15 when the lever 72 is near the beginning or end of its stroke, thereby operating the horn 92.
Patent GB-1117585-A (GB)
Title: Improvements in or relating to the treatment of strip metal
Inventor: GRINSTED BRIAN
IPC: B21B1/22
Filed: 1966-08-30
Abstract: 1,117,585. Curving. METAL BOX CO. Ltd. 25 May, 1967 [30 Aug., 1966], No. 38627/66. Heading B3E. A method of providing strip metal with a predetermined edgewise camber comprises the steps of moving the strip lengthwise from a reel thereof and at a predetermined position along the path of the strip imparting thereto a permanent tensile strain by locally longitudinally tensioning the strip by increasing the linear speed thereof progressively across the width of the strip, and maintaining tension in the strip as it is moved away from said position. Metal strip 1 is drawn from a reel 2 to pass around driven cylindrical rollers 3, 4, 5 and 6, a driven cylindrical roller 7 acting as a pinch roller in co-operation with the rollers 4 and 6. A frusto-conical roller 8 co-operates with the roller 6 and is driven at a speed such that its minimum circumferential velocity, at the small end, is greater than the circumferential velocity of the roller 6. This causes the strip to be stretched, an amount progressively increasing across the width thereof thus to cause the strip to curve edgewise. The curved or cambered strip then passes driven frusto-conical rollers 9, 10, 11, 12 to be rewound loosely at 13. The roller 6 may be carried by bearings mounted on flexure strips and pre-loaded towards the roller 8 by adjustable spring means.
Patent GB-962061-A (GB)
Title: Improvements in or relating to organosilicon compositions
IPC: C08G/
Filed: 1962-10-12
Abstract: A siloxane rubber stock is made by mixing in the absence of moisture (1) a siloxane having a viscosity of at least 25 cs. at 25 DEG C. and having the average formula: <FORM:0962061/C3/1> in which z has an average value from 1 to 1.10, y has an average value from 1.90 to 2.0 and the sum z+y is 3, R is a monovalent radical of 1 to 18 C atoms and is a hydrocarbon (saturated or unsaturated) halohydrocarbon or cyanoalkyl radical, and n is an integer, (2) a silane of the formula RxSi(OR1)4-x, wherein R1 is a monovalent-aliphatic or haloaliphatic hydrocarbon radical (having no halogen alpha to the oxygen) containing less than 5 C atoms and x is 0 or 1, in an amount of at least 0.5 mol per mol of Si-bonded hydroxyl in (1), and (3) at least 0.1% (by wt. of (1)) of an organic titanate.  The titanate (3) can be monomeric, polymeric or a chelated material, numerous examples of which are given. Fillers with or without organosilyl surface modifications, e.g. oxides of Al, Ti, Zn, Mg and Zn, aluminium silicate, mica, glass, diatomaceous earth, sand, crushed quartz, silica (fume, xerogel and precipitated), C black, graphite, phthalocyanine and copper phthalocyanine, plasticizers, e.g. end-blocked dimethylpolysiloxane liquids, compression set additives, oxidation inhibitors and ultra-violet absorbers, may also be added. The compositions cure spontaneously upon exposure to moisture. In a typical example (2) a hydroxy-terminated dimethylpolysiloxane liquid was mixed with methyltrimethoxysilane and tetrapropyltitanate to yield a liquid which was stable in the absence of moisture, but gelled to a rubber in 4 or 5 hours on exposure to air.  Uses: in caulking, coating and insulating applications.  Specification 762,819 is referred to.