baber/WOPTO huggingface dataset:
Patent GB-1350679-A (GB)
Title: Flame-resistant acrylonitrile polymer filaments or fibres
IPC: D01F6/18
Filed: 1971-08-30
Abstract: 1350679 Flame-resistant acrylic fibres BADISCHE ANILIN- & SODA-FABRIK AG 13 Aug 1971 [14 Aug 1970] 38032/71 Heading C3P Flame-resistant filaments or fibres of an acrylonitrile polymer containing at least 85% by weight of acrylonitrile units contain, uniformly distributed therethrough, a minor amount of a copolymer of acrylonitrile and an ester of acrylic or methacrylic acid with a bromine-containing alcohol of 2-6 carbon atoms, said copolymer containing 10-35% by weight of bromine and being present in such an amount that the filaments or fibres contain 1À5-8% by weight of bromine. Said acrylonitrile polymer may contain units of a comonomer such as (meth) acrylic acid and esters thereof, methacrylonitrile, styrene, vinyl acetate or propionate, or a dyeable comonomer component, e.g. an unsaturated sulphonic acid or salt thereof or a comonomer containing basic nitrogen. The bromine-containing copolymer may be derived from a (meth) acrylate ester of an alcohol containing 1-4, preferably 2-3, bromine atoms. The bromine-containing copolymer may also contain units of a sulphonate or basic comonomer Blending of the two polymers is suitably effected in a solvent such as dimethyl sulphoxide, tetramethyl sulpnone, ethylene carbonate, dimethyl acetamide or dimethyl formamide; the solution of the mixed polymers can then be spun by dry or wet spinning methods.
Patent GB-1076953-A (GB)
Title: Improvements in or relating to colour television receivers
IPC: H04N9/28
Filed: 1964-09-18
Abstract: 1,076,953. Cathode-ray tube circuits. BLAUPUNKT-WERKE G.m.b.H. Sept. 18, 1964 [Sept. 18, 1963], No. 38172/64. Heading H4T. Relates to dynamic convergence circuits in colour television receivers utilizing a triplebeam cathode-ray tube (C.R.T.) and in which electromagnets are provided with scan-frequency first currents each of parabolic waveform and of adjustable amplitude. According to the invention a second adjustable current is superimposed over one or more of the first currents, the second current being effective to change the amplitude of the first current during onehalf of the duration of the parabola of the first current and being substantially zero during the other half thereof. For vertical convergence, Fig. 1, the correcting electromagnet windings 5, 6, 7 are connected at one end to the taps of respective potentiometers 8, 9, 10 connected in parallel, and with centre-points earthed, to deflexion transformer 14 via diodes 11, 13. Adjustable amplitudes of parabolic correcting currents, Fig. 2 (not shown), are supplied from a source 1. The source of the second correcting current 20, Fig. 3, is winding 13 which carries a sawtooth voltage. Diodes 11, 12 are so poled that the former passes negative voltage 16<SP>1</SP> and the latter passes positive voltage 16, the sawtooth portions passed being zero when the beam deflexion scanning corresponds to the mean picture height (indicated by line 19). Static convergence adjustment for the centre of the C.R.T. screen is effected as known by adjustment of four permanent magnets. By changing the settings of potentiometers 2, 3, 4, .lines (24, 25, 26, Fig. 4, not shown) relating to the " blue," "red" and "green" beams respectively are aligned in the lower-edge portion of the picture and the upper-edge portion is brought into convergence by the adjustment of the wipers of potentiometers 8, 9, 10. A third adjustable correction current may be added: in Fig. 5 (not shown) the first correction currents are taken from potentiometers (30, 31) in the cathode circuit of the vertical deflexion output valve (35), a resistor (33) being of such value that it transmits a D.C. component (36, Fig. 2 (not shown)), whereby the parabolic current (15, Fig. 2 (not shown)) becomes zero in the centre of the picture. Only one circuit is provided for the series windings (38, 39) of the " red," " green " electromagnets; these windings carry the second correcting current 20, Fig. 3, from a potentiometer (40, corresponding to potentiometers 9, 10, Fig. 1). A further potentiometer (41) bridges those windings and its wiper is connected to that of a potentiometer (42) connected via diodes (43, 44) to an additional winding (45) of the vertical deflexion transformer (46). The latter potentiometer (42) supplies the third correcting current of waveform similar to that of current 20. The circuit may be simplified by omitting a diode, Fig. 6 (not shown). Setting up instructions are included.
Patent GB-1086864-A (GB)
Title: Manufacture of active carbon
Inventor: KAYE JOHN CHARLES ANTHONY
IPC: C01B32/336
Filed: 1963-10-01
Abstract: Activated carbon is produced from particles or agglomerates of carbonaceous material by heating them at an average temperature rate of 30-80 DEG  C./min., e.g. 40-60 DEG  C./min. over a range from ambient to at least 800 DEG  C. and the thus heated particles are activated by treatment with a gas, e.g. steam.  Heating is preferably effected at different rates, e.g. 15-25 DEG  C./min., e.g. by heating a fluidized bed of the material, passing the material into a heated fluidized bed of inert material, e.g. sand, or by being carbonized in suspension in hot gases. The activation may be effected by passing steam through a fluidized bed of the material or in steam in a static bed of the material. During the activation of coal with steam, the ratio steam: coal per unit wt. per hour is preferably less than 1:1, e.g. 0.2:1-0.7:1, the coal preferably having a maximum volatile content of 10.0% by wt.  The particles may be size adjusted before activation so that the size after activation is that required.  The temperature of the gas may be at or above that of the carbonaceous material.  Briquettes or granules may be manufactured from mixtures of different carbonaceous materials.
Patent GB-363833-A (GB)
Title: Improvements in expansion joints for steam boilers
IPC: F22B37/00
Filed: 1930-12-23
Abstract: 363,833. Steam boiler settings. WHITEHEAD, R., Lime House, Hollinwood, Oldham. Dec. 23, 1930, No. 38639. [Class 123 (ii).] Expansion joints between the shell and brickwork setting comprising double channel carriers accommodating asbestos matting have one or both of the channel flanges separate from the centre web to which it is bolted, or one or both flanges may have inspection openings closed by removable caps. For the front end of a Lancashire boiler the centre web a may be made of planished steel and bent round the boiler and the front flange member a<2>, bolted to turned-up lugs so as to give easy access to the mats B, B<1>. The back flange a<1> may be riveted in position. For the back end of the boiler the channel may comprise a vertical cast-iron column with one flange a<1> integral and the other a<2> bolted to lugs a<3>. Or both flanges may be integral with the web a, one having inspection openings covered by cast iron caps bolted to it.
Patent GB-1485304-A (GB)
Title: Dynamo electric machines
IPC: H02K25/00
Filed: 1974-09-05
Abstract: 1485304 Dynamo-electric machines D L HORE 19 Aug 1975 [5 Sept 1974] 38859/74 Addition to 1485154 Heading H2A The single or polyphase rotary or linear machine of the parent Specification is modified to include a position sensor for sensing the position of the movable member relative to the stator, and a switch controlled by the position sensor, whereby, in operation, with the sensor in a null position the switch effects stator energization which locks the movable member in a given position and with the sensor displaced from its null position the switch effects successive energization of different windings on the stator and hence continuous movement of the movable member.
Patent GB-950345-A (GB)
Title: Oxidation of carbonaceous substances suspended or dissolved in a liquid resistant to oxidation
Inventor: REICHERT MARTIN
IPC: F23G7/00
Filed: 1961-10-31
Abstract: 950,345. Oxidizing carbonaceous material in gaseous suspension. BADISCHE ANILIN- & SODA-FABRIK A.G. Oct. 31, 1961 [Nov. 4, 1960], No. 38864/61. Heading B1X. [Also in Division F4] Carbonaceous material in suspension in an oxidant-resistant liquid is oxidized in a chamber wherein the liquid is evaporated by the combustion of auxiliary fuel and the material is mixed with an oxygen-containing gas stream by an orifice plate. A slurry of carbon black in water is delivered to a combustion chamber 1 through an atomizer 8. Air and fuel are supplied tangentially at 9, 10 to burn in a chamber 7 surrounding the atomizer 8 and entrain the slurry in a whirling stream of hot gases. Additional air or oxygen introduced at 15, 16 cools the chamber walls and the carbon black burns in a ring of flame above an orifice plate 11 which causes the intimate mixing of the gases so that combustion is completed in a chamber 3. The chamber 3 discharges tangentially to a cylindrical separator 4 and the gases are fed to a heat exchanger 13 to preheat air or fuel, and used to concentrate the aqueous slurry in a vessel 5. A condenser 6 allows the liquid to be recovered.
Patent GB-1191403-A (GB)
Title: Gear Grinding Machine Tool.
IPC: B23F1/02
Filed: 1968-03-13
Abstract: 1,191,403. Grinding gears. LEAR SIEGLER Inc. 13 March, 1968 [18 April, 1967], No. 38939/69. Divided out of 1,191,402. Heading B3D. In a gear grinding machine comprising (a) a bed; (b) a workpiece support arranged with a rotatable work spindle to carry a workpiece for rotation in the workpiece support; (c) a grinding wheel head support mounted on said bed for sliding movement in a direction parallel to the axis of said work spindle; (d) a grinding wheel head mounted on said head support so as to be angularly adjustable about an axis perpendicular to the axis of said work spindle in accordance with the helix angle of a workpiece gear to be ground; (e) a lead mechanism connected between said head support and said work spindle to cause timed angular movement of said work spindle in response to sliding movement of said head support; and (f) means for moving said head support in said parallel direction, said head support is detachably connected to said lead mechanism. The machine described is the same as that in Specification 1,191,402.
Patent GB-1357856-A (GB)
Title: Sighting apparatus for firearms
IPC: F41G1/32
Filed: 1972-08-22
Abstract: 1357856 Sighting apparatus RHEINMETALL GmbH 22 Aug 1972 [7 Oct 1971] 39023/72 Heading F3C A sighting apparatus for a firearm comprises a housing consisting of tubes 1, 2, Fig. 1, the tube 1 having a part-reflective mirror 12 therein and the tube 2 containing a light rod 6 which is positioned in a cover 7 and is illuminated by incident ambient light and/or by a light source 9. An image of the luminous rear end of the light rod 6 passes through apertures 5a and 4a respectively of a disc 5 and a screen 4, both of which are supported by a sleeve 3, to a mirror 11  which passes the image to the mirror 12, via aligned apertures 2a, 1b respectively in the tubes 2, 1. This image appears as a light mark to the eye of a marksman who is viewing a target through the tube 1. A mirror coated portion 12a may be provided at the centre of the mirror 12 to provide additional reflection. Adjusting screws 10a, 10b, Fig. 2, are provided to align the sleeve 3, and consequently the light mark, with the firearm (not shown). A dome end 7a, Fig. 1, of the cover 7 has a reflectively coated lining 8 and an opaque line 8a, covers the front end of the light rod 6. In another embodiment the brightness of the light mark is adjusted to the light conditions by a tubular screen 13, Fig. 3, which is movable axially by means of a knob 14 on a lever 14a, the latter passing through a slit 15 formed in the tube 2. In a further embodiment a light source 9b, Fig. 4, comprises tritium-filled glass tubes in an opaque part 9c which is fixed to a disc 5 by a screw 5b. The light rod 6 has a reticule at its end 6b and has a portion 6a of increased size at its other end, the latter facilitating the entry of additional incident light into the light rod 6, especially in view of the end of the cover 7 having a flat portion 7c. A cap (not shown) may be provided for night use in order to prevent the end 6a of the rod 6 being visible, alternatively an iris diaphragm may be fitted into the end of the cover 7. The diaphragm has blades 16 which are displaceable when a ring 18 is rotated by a lever 19A provided with a knob 19, and has a fixed ring 17 secured to the end of the cover 7.
Patent GB-932252-A (GB)
Title: Stabilized poly-ª -olefin compositions
IPC: C08K5/134
Filed: 1959-11-20
Abstract: A poly-a -olefin is stabilized with at least one alkyl phenyl salicylate of formula <FORM:0932252/IV(a)/1> wherein R is a C8 to C15 alkyl group.  The polyolefin may be derived from propylene, pentene, methylbutene, methylpentene, or dimethylbutene and the stabilizers preferred are the dodecyl, nonyl, pentadecyl and the various octyl phenyl salicylates.  The products find application as sheet, rod, tube, pipe, filaments, film and coatings on paper, wire, metal foil, glass fibre and synthetic or natural textiles.
Patent GB-1517785-A (GB)
Title: Hot melt adhesive compositions
IPC: C08L31/04
Filed: 1975-09-26
Abstract: 1517785 Polymer compositions E I DU PONT DE NEMOURS & CO 26 Sept 1975 [26 Sept 1974] 39592/75 Heading C3M Compositions having a ring and ball softening point of at least 230 F. comprise (A) 4 to 25 weight per cent of an ethylene/vinyl ester copolymer having a melt index of 2 to 150 and containing 72 to 82 weight per cent of ethylene and 18 to 28 weight per cent of a vinyl ester wherein the acid moiety contains 1 to 4 carbon atoms, (B) 0À7 to 5 weight per cent of polyethylene of molecular weight 1500 to 3000, density 0À94 to 0À97 g./c.c. and melting point 240 to 270 F., (C) 10 to 48 weight per cent of a polymer resin of softening point 40 to 140 F. derived by the alkylation of aromatic compounds with dicyclopentadiene, (D) 0 to 15 weight per cent of an aliphatic thermoplastic resin having a softening point of 155 to 240 F. and prepared from C5 to C7 diene and olefin monomers, (E) 0À5 to 8 weight per cent of paraffin wax or mixture of paraffin and microcrystalline waxes and (F) 25 to 75 weight per cent of filler. The preferred copolymers are ethylene/vinyl acetate copolymers, and the compositions may be used for backing carpets.
Patent GB-1282556-A (GB)
Title: Improvements in or relating to electrical circuits
Inventor: ROGERS MICHAEL JOHN
IPC: H03K21/00
Filed: 1968-08-20
Abstract: 1282556 Frequency dividers SMITHS INDUSTRIES Ltd 13 Aug 1969 [20 Aug 1968] 39739/68 Heading G4A A frequency-divider, especially for use in clocks, comprises a number of binary stages arranged in cascade but with all these stages receiving ring-type clock pulses from a common transfer pulse generator. High-frequency pulses S feed bi-stable 1 to produce pulses P which feed bi-stable 2 in the transfer pulse generator to produce clock pulses Q which are applied to all subsequent stages. Anti-phase pulses Q are divided by two at 3, the resulting transfer pulses being applied to bistable 4 and AND gate 5. The spacing of output pulses T from bi-stable 4 in respect of pulses P is therefore 2, 3, 3 repeated, coincidence of T and each transfer pulse in gate 5 producing an output U of one pulse for each 8 P pulses. The next stage 6, 7 and all subsequent stages divide by two.
Patent GB-1121730-A (GB)
Title: Web cutting machines
IPC: B23D25/04
Filed: 1966-09-07
Abstract: 1,121,730. Cutting webs. BUCKBEE-MEARS CO. 7 Sept., 1966 [7 April, 1966], No. 39906/66. Heading B4B. A machine for cutting sections 10a, Fig. 1, e.g. aperture masks for colour television tubes, from a web 10 moving continuously in a vertical plane comprises movable and fixed cutters 15, 15a respectively, clamp jaws 20, 20a, Fig. 3, for gripping the upper edge of the web and carried by a carriage 21, 21a, 23 and 23a movable longitudinally along guide rods 24, 25 to remove cut sections from the web and laterally along guide channels 27 at the end of which the clamp jaws are opened to release the cut sections for stacking on a tray-like receptacle 38, Fig. 3. The cutter 15 is connected to the piston rod 17 of a fluid-pressure cylinder 18, the supply of fluid to which is controlled by a solenoid valve SV1. The clamp-jaw carriage is operatively connected to the piston rod 30, Fig. 5, of a fluid pressure cylinder 28, the supply of fluid to which is controlled by a solenoid valve SV3. The clamp-jaw 20a is fixed and the jaw 20 is movable to (a) a fully-open position by means of a fluid-pressure cylinder 43, the supply of fluid to which is controlled by a solenoid valve SV4 and (b) a partially-open position by means of a fluid-pressure cylinder 46, the supply of fluid to which is controlled by a solenoid valve SV2. The web is fed by rollers 13 which are driven by linkage which includes a motor-actuated chain 50, Fig. 5, a friction clutch 51, and a shaft 52 keyed to one of the rollers and having at its lower end a brake 53. The brake is applied, to interrupt the feeding action of the rollers, by the closing of a normallyopen switch 54, Fig. 1, upon the start of each stroke of the cutter blade 15. The clamp-jaw carriage is moved laterally when a switch LS2, Fig. 5, is closed to energize a motor M and at the end of the lateral movement a switch LS1, Fig. 3, is operated to de-energize the clampjaws to release a cut section. The carriage is then returned diagonally to the starting point. The switches LS1, LS2 and the valves SV1 to SV4 are included in an electric circuit, Fig. 8 (not shown), which also includes a photoelectric control (60) which may be activated either upon the passage of an opaque area or of a foraminous area (e.g. a multiplicity of apertures in an area 11) of the web.
Patent GB-885650-A (GB)
Title: Improvements in or relating to apparatus for the control of aircraft
Inventor: PARKER ERIC
IPC: G05D1/02
Filed: 1958-12-11
Abstract: 885,650. Radio navigation. DECCA RECORD CO. Ltd. Dec. 11, 1959 [Dec. 11, 1958], No. 40041/58. Class 40(7). A traffic control device mounted in an aircraft comprises a first potentiometer 13 driven by a radio position fixing apparatus 10 to produce a voltage representative of the distance of the aircraft from a predetermined point which voltage is compared in a voltmeter 25 with the voltage from a second potentiometer 15 continuously driven by a device 17 (e.g. a clock) and providing a voltage representative of the distance from the predetermined point (or of the time to reach this point for arrival at a selected time) of a hypothetically similar aircraft flying at the programmed speed. The reading of meter 25, which is calibrated in terms of time, then provides an indication of the amount by which the aircraft is ahead or behind time for a predetermined arrival time. The potentiometers may have adjustable non- linear characteristics to correct for any non uniform programmed aircraft speed. When the aircraft is ahead of time and turns back on its track for a period, the time at which a turn back to the original direction should be commenced (which takes an appreciable time) may be indicated on meter 25 by introducing an appropriate time displacement into the system by rotation of shaft 21 of a differential 18 between the device 17 and potentiometer 15. A warning lamp controlled by a switch operated by shaft 21 is, preferably, provided to indicate that meter 25 now (shaft 21 operated) shows the time to commence the turns and not the time ahead or behind the required programme. For initial setting-up of the apparatus a suitably calibrated multi-position clutch 22 (or, if desired, a continuously adjustable clutch) allows potentiometer 15 to be coupled to the clock device 17 in a position corresponding to the required time of arrival at a given point. Specification 885,649 is referred to.
Patent GB-898233-A (GB)
Title: Improvements in weighing scales incorporating price indicating means
Inventor: BRECKNELL HAROLD LESLIE
IPC: G01G23/34
Filed: 1958-12-13
Abstract: 898,233. Weighing apparatus. BRECKNELL Ltd., CHARLES W. Dec. 14, 1959 [Dec. 13, 1958], No. 40244/58. Class 143. A weight-and-price indicating scale of the kind wherein the weighing mechanism drives a rotatable disc bearing weight and price indicia, the latter indicia are in concentric bands and are displayed on a screen 23 by an optical system whose elements are a light source 18 and condenser lens 19 on one side of the disc 12 and a mirror 20 and projection lens 21 on the other side, all these elements being mounted on a carriage 17 which is movable radially of the disc in the direction of the optical axis of the projector lens 21 so that an image of a selected price band may be projected (e.g. via the mirror 22) on to the screen 23 so as to occupy substantially the same position on the screen for all positions of the carriage. The carriage movement is effected by a cord 25 trained over pulleys 26a, 26b, the latter of which is connected to an operating knob 30 and the former to a drum 31 which carries indications of the carriage setting. The weighing mechanism includes a weigh beam 4a one end of which carries a yoke 5 supported by a pair of parallel spring resistants (not shown), the yoke being connected by a rack bar 8 to the pinion 9 driving the chart, the rack bar being offset from the point of connection of the weigh beam to the yoke to protect the indicating mechanism from damage. The weight indicia are adjacent the periphery and on both sides of the disc and are visible through lenses 13.
Patent GB-1524157-A (GB)
Title: Internal combustion engine with fuel heating
IPC: F02M31/00
Filed: 1976-09-29
Abstract: 1524157 Heating IC engine fuel DAIMLERBENZ AG 29 Sept 1976 [8 Oct 1975] 40423/76 Heading F1B [ Also in Division F4] Fuel injected into a chamber 9 in an engine air intake pipe 8 or into an engine combustion chamber through a nozzle 10 is heated to close to its decomposition temperature during passage from an injection supply device. An exhaust heated heat tube 13 heats the fuel to a basic temperature and the electrical heater 12 completes the heating. To limit heat transfer to the fuel a heat accumulator (115 .... 415), Figs. 2 to 5 (not shown), and a cooling water heat exchanger (116, 216) are associated with the tube 13. The accumulator (115) and exchanger (116) may become operative on displacement of inert gas in the upper section of the tube 13 due to rise in pressure and temperature of the vapour in the tube. The accumulator (215, 315) may be arranged between the exhaust gas heated end and the fuel heater around the tube 13 and be brought into heat conducting contact with the tube by annular wedges (418), Fig. 5 (not shown), in response to operation of temperature responsive elements (421) which may be bimetallic springs. The electrical heater may be a positive temperature coefficient resistance heater comprising a porous matrix or closely spaced plates of Ba T 1  O 3 . The cooling water heat exchanger may be controlled in response to tube temperature. Reference has been directed by the Comptroller to Specification 1338767.