baber/WOPTO huggingface dataset:
Patent GB-791973-A (GB)
Title: Improvements in or relating to the production of hydrogenated naphthalene
Inventor: JELFS EDWARD CHARLES GROVES
IPC: C07C13/32
Filed: 1955-11-30
Abstract: Hydrogenated naphthalenes are produced by contacting a hydrocarbon fraction containing naphthalene and alkylated naphthalenes with hydrogen in a hydro-dealkylation zone at elevated temperature and pressure to dealkylate the alkylated naphthalene, and contacting the resultant naphthalene-containing stream with hydrogen in a hydrogenation zone in the presence of cobalt molybdate, or a mixture of the oxides of cobalt and molybdenum.  Starting materials are preferably mineral oil fractions such as sulphur dioxide, extracts of fractions of crudes and the heavy fractions from a hydroforming operation, e.g. a sulphur dioxide extract of a Tomball crude and the 410 DEG  F. and bottoms from hydrofining a 200-430 DEG  F. virgin naphtha.  The hydrodealkylation may be carried out at 1100-1800 DEG F. and 200-1000 p.s.i.g. with 1-5 molecules of hydrogen per atom of alkyl carbon in the feed, the hydrogen pressure being at least 30 atmospheres.  A catalyst may be used.  Hydrogenation conditions may be 600-900 p.s.i. and 550-800 DEG  F.  The catalyst is sulphur-resistant and desulphurization of the feed is unnecessary. The dealkylated feed, however, may be concentrated in naphthalene by distillation, and the final product may be fractionated to recover desirable products.
Patent GB-386770-A (GB)
Title: Improvements relating to miners' picks
IPC: B25G3/02
Filed: 1932-09-08
Abstract: 386,770. Miners' picks. SHARP, J., Sea View, Low Valleyfield, Newmills, Fife. Sept. 8, 1932, No. 34361/31. [Class 61 (i).] A miner's pick 5 is secured to a handle 7 by means of a socket 1 having an end aperture 6 through which a wedge 8 may be driven to secure the socket to the handle prior to the positioning of the pick in the socket. The pick is secured by a wedge 9, slackening of which is prevented by a cotter 10 passing through one of a series of notches 11 in the wedge.
Patent GB-960537-A (GB)
Title: Process for producing silicon carbide
IPC: C01B31/36
Filed: 1962-09-07
Abstract: Silicon carbide is produced by gaseous reaction of a silicon oxide; e.g. SiO, SiO2, or a mixture; with at least one carbon compound in the absence of air or moisture and preferably above 1400 DEG  C.  The silicon oxide is obtained by heating quartz or a silicate, e.g. aluminium silicate, with a reducing agent, e.g. coke, carbon black, silicon, Al or Mg; above 1400 DEG  C.  The carbon compounds may be aliphatic and/or aromatic and/or mixed aliphatic-aromatic hydrocarbons, or oxygen-containing compounds with a CO : atomic ratio of 1 or more, e.g. alcohols, ketones, ethers, CO, light and heavy oils and are preferably aliphatic hydrocarbons with up to 9 carbon atoms.  The reactants may be diluted with inert or reaction waste gases.  The SiC may be purified with NaOH solution to remove unreacted oxide as silicate. The product is cubic b  SiC of density 10-50 g/l., and specific surface 50-300 sq. m/g., and may be a mixture of fibres, length up to 1500 mm  and breadth up to 60 mm , round particles up to 600 mm  diameter, and microcrystalline particles up to 500 mm .
Patent GB-1286339-A (GB)
Title: Surgical cutter
Inventor: BENDER HERMAN GEORGE
IPC: A61F9/00
Filed: 1970-07-15
Abstract: 1286339 Biopsy instruments H G BENDER R N PAGE and L D WOLD 15 July 1970 [15 July 1969] 34400/70 Heading A5R A biopsy instrument comprises an elongated outer tubular cutter 12, an inner tubular cutter 13 extending partly within cutter 12 and rotatable about its longitudinal axis within cutter 12, the cutters each having an orifice at one end, which orifices may be brought into registration, and means connecting a vacuum source to the interior of cutter 13 for drawing tissue into said orifices, the tissue then being cut off on relative rotation of cutters 12 and 13 and sucked away from the orifices. The orifices preferably extend around the peripheries of the cutters for less than half their circumference and the distal end 31 of cutter 13 is urged against the distal end 19 of cutter 12 by means of a coil spring. Cutter 13 may be continuously rotated in one direction or oscillated about its axis to obtain a succession of tissue samples, the cutter 13 being rotated by an air or vacuum operated motor or an electric motor (15), Fig. 3 (not shown), which plugs into the side of a housing (11) of the instrument, the motor (15) being energised via a foot operated switch. The cutter 13 is connected with the vacuum source via a length of flexible hose contained in an extension of housing (11), the hose normally being closed by a spring-urged clamp acting on the exterior of the hose and being opened on pressing a button (16) on housing (11).
Patent GB-176858-A (GB)
Title: Improvements in or relating to garage trollies, carriers or the like
IPC: B66F7/24
Filed: 1920-12-06
Abstract: 176,858. Powell, A. D., and Lake & Elliot, Ltd. Dec. 6, 1920. Stands or supports for vehicles. - In garage trollies or carriers having an apertured wheelreceiving base a supported on wheels i and provided with a depending end extension n for engaging the ground and lifting the trolly when a vehicle wheel is placed thereon, a pair of feet o is provided to fulcrum on the ground whereby all the wheels are raised from the ground during the passage of the vehicle wheel.
Patent GB-467198-A (GB)
Title: Improvements in and relating to mirrors
IPC: F21V33/00
Filed: 1935-12-12
Abstract: 467,198. Electric lamps combined with mirrors. BURNDEPT, Ltd., and RICHARDSON, R. P. Dec. 12, 1935,No. 34507. [Classes 39 (ii) and 75 (iii)] [Also in Group XIV] In a mirror having an electric lamp at the back shining through a part of the glass free from silvering, the back plate 3 of the mirror is of sheet metal and has flaps 4 struck therefrom to constitute part of the casing for the lamp or for the lamp and battery 6 if such is used. The casing is completed by a sheet metal cover 7 engaging tongues 8 struck from the back plate.
Patent GB-840458-A (GB)
Title: Improvements in and relating to the manufacture of bone glue
IPC: C09H3/00
Filed: 1957-11-05
Abstract: Glue is extracted from washed bones e.g. green or fresh bones, by steaming the bones at a pressure of from 8 to 35 pounds per square inch gauge for from 15 to 120 minutes and without releasing the pressure, quenching the bones by covering the bones with cold water to reduce the temperature to 85 DEG  to 120 DEG  F., leaching the bones with cold water for from 15 to 120 minutes, and recovering the glue containing liquor.  The treatment may include the steps of steaming the leached bones at a pressure of from 8 to 35 pounds per square inch gauge for 15 to 120 minutes, releasing the steam pressure and covering the bones with hot water at a temperature of 200 DEG  to 240 DEG  F., leaching the bones with the hot water for 15 to 120 minutes, recovering the glue containing liquor and treating the liquor according to the preceding treatment in a generally alternating plan, e.g. for up to a total of 12 treatments, until the solids content of the liquor reaches about 1%.  The treatments may be carried out alternately or in any sequence provided the first leaching step is a cold-water treatment without venting of the steam from the original steaming step.
Patent GB-1433203-A (GB)
Title: Method ofor electronically editing a video tape and an apparatus for use therein
IPC: H04N5/78
Filed: 1973-07-19
Abstract: 1433203 Recording television signals AKAI ELECTRIC CO Ltd 19 July 1973 34519/73 Heading G5R In a video tape recorder, on completion of recording the tape is automatically rewound by a predetermined length so that control signals recorded with the video signal are avaiable for playback to a servo system which synchronizes them with reference signals associated with the vertical synchronizing signals contained in a second video signal to be recorded following the first and in phase therewith. As described, release of a forward-drive solenoid causes energization of a rewind solenoid until a predetermined length of tape has been rewound, re-energization of the forward-drive solenoid being prevented meanwhile.
Patent GB-886075-A (GB)
Title: Process for the production of refractory articles having a high mullite content
IPC: C04B35/18
Filed: 1958-10-28
Abstract: Refractory materials having a high mullite content are produced by reacting 45 to 55% by weight, of kaolinic clay with 55 to 45% of alumina, equal amounts of the two reactants being preferred, by heating at between 1350 DEG  to 1450 DEG C for up to two hours, the kaolinic clay having a specific surface of at least 25, preferably 40 to 60, m 2/g and containing not more than 3% of oxides other than silica and alumina, the alumina being a synthetic boehmite, prepared by heating precipitated alumina trihydrate, having a specific surface of at least 3 m 2/g and containing not more than 2% impurities.  Both the clay and the alumina are preferably of a particle size of about 100 microns and one or more additional refractory materials, e.g. corundum, sillimanite, silicon carbide, graphite, may be present during the reaction.ALSO:Refractory materials having a high mullite content are produced by reacting 45 to 55%, by weight, of kaolinic clay with 55 to 45% of alumina, equal amounts of the two reactants being preferred, by heating at from 1350 DEG C to 1450 DEG C. for up to two hours, the kaolinic clay having a specific surface of at least 25 m2/g, preferably 40 to 60 m2/g, and containing not more than 3% of oxides other than alumina and silica, the alumina being a synthetic boehmite prepared by heating precipitated aluminium hydroxide, having a specific surface of at least 3 m2/g and containing not more than 2% impurities.  Both the clay and the alumina preferably have a particle size of about 100 microns and one or more additional refractory materials, e.g. corundum, sillimanite, silicon carbide, or graphite, may be present during the reaction.
Patent GB-976153-A (GB)
Title: Improvements in rails for the suspension of doors and the like
Inventor: SCHAFER WILHELM
IPC: E05D15/06
Filed: 1961-09-27
Abstract: 976,153. Runways for sliding doors. E. SCHAFER. Sept. 27, 1961, No. 34564/61. Heading B7L. A hollow rail 1, Fig. 2, with tracks (not shown) on its inner walls to receive runners on a door to be suspended from the rail has pairs of lugs 3 pressed out of its upper wall to receive plates 4 which are screwed to a wall 5. Cut-out portions (not shown) in the vertical limb of the plates adjacent the rail 1 facilitate assembly of the plate and rail and a flange 7 prevents withdrawal of the rail. Alternative plates 8, Fig. 7, for suspension from a ceiling 10 have pressedout retaining flanges 9 and adjacent plates are arranged with the flanges on opposite sides of the rail.
Patent GB-343058-A (GB)
Title: Improvements relating to the mounting of the gear-box and driven road-wheel in three-wheeled motor vehicles
IPC: B62D61/08
Filed: 1929-11-12
Abstract: 343,058. Motor vehicle change-speed gearing and radius rods. MORGAN, H. F. S., Pickersleigh Road, Malvern Link, Worcestershire. Nov. 12, 1929, No. 34571. [Classes 79 (ii) and 79 (iv).] The chain-driven road wheel of a three-wheeled motor vehicle is carried by radius rods 9, 10 pivoted upon bosses 8 secured to the sides of the gear box 1 concentrically with a transverse countershaft carrying driving chain wheels 3, 4, the outer ends of the radius rods being, connected to the ends of longitudinal leaf springs 17, 18 fixed to transverse gear-box supports 15, 16 which bridge and are secured to two longitudinal chassis members 20. By disconnecting the transverse supports from the longitudinals and the gear-box from the tube 2 housing the transmission shaft, the gear-box and driven road wheel together with the radius rods and leaf springs form a detachable unit. The tension of the driving chains, which is adjustable by known means 13, 14, is unaffected by movements of the radius rods.
Patent GB-742168-A (GB)
Title: Force-measuring apparatus
IPC: G01L7/00
Filed: 1953-12-11
Abstract: 742,168. Electro indicating systems. CELANESE CORPORATION OF AMERICA. Dec. 11, 1953 [Dec. 13, 1952], No. 34574/53. Class 40(1) A force to be measured e.g. fluid pressure in a pipe 11 acts on a pivotal beam 16 and is balanced by one component of a force produced by a stressed member such as cord 22, the position of which is variable to adjust the component until the beam is restored to a null or balanced position when the position of the stressed member is a measure of the force. As shown, deviations of the beam from its null position are sensed by an electromagnetic pick-off 41 which in known manner controls a servomotor 44 driving a screw- and-nut mechanism to raise or lower a pulley 23 over which the weight of cord passes until the beam is restored to its null position. The vertical position of the nut 29 is then a measure of the vertical component of the tension in the cords 22 and hence of the fluid pressure and may be indicated by a suitably graduated counter 38 driven by the screw 33.
Patent GB-432681-A (GB)
Title: Improvements in and relating to moulds for the manufacture of cellular concrete
IPC: B28B1/50
Filed: 1934-12-01
Abstract: 432,681. Moulds for cellular concrete. HORY, G., 4<bis>, Rue du Docteur Maret, Dijon, France. Dec. 1, 1934, No. 34599. Convention date, Nov. 7. [Class 87 (ii)] A mould for making articles of cellular concrete has its sides mounted to move relatively to the base, two opposite sides being connected by ties having compensating devices of such dimensions and material that these sides are always kept in contact with the other pair of sides while the mould is heated to 175‹ C. The sides of the mould are formed of angle irons which rest on a sheet-metal base 1. The sides 2, 3 have notches 6 in their ends adapted to receive ties 10 carrying wing-nuts 14. Zinc tubes 15 are inserted between the nuts and the sides of the mould and their size is so chosen relatively to the coefficients of expansion of the iron ties and the zinc tubes that the mould is held tight while the temperature is raised. Owing to the difference in mass, the ties 10 expand more rapidly than the sides 4, 5 and the expansion of the zinc tubes compensates for this difference. The mould may be used for concrete made from silica and lime hardened by water vapour under pressure.
Patent GB-1349284-A (GB)
Title: Treatment of floating pollutants
IPC: C02F1/68
Filed: 1971-07-23
Abstract: 1349284 Removing pollutants from water INTERCONTINENTAL CHEMICAL CO Ltd 23 July 1971 [24 July 1970] 34691/71 Heading C1C [Also in Division C3] A process for treating pollutants (e.g. oil and organic and inorganic solids) floating on water comprises applying (e.g. spraying) to the water a polymerizable component the polymerization of which is induced by moisture and which polymerizes in the water to form a matrix incorporating the pollutants. The matrix may sink or be subsequently removed. The composition applied to the water may comprise an ester (e.g. alkyl or alkenyl, e.g. containing up to 16 C atoms, cyclohexyl or phenyl) of 2-cyano-acrylic acid, a solvent (e.g. liquid hydrocarbon, e.g. halogenated hydrocarbon such as methylene chloride and 1,1,1 - trichloroethane) and stabilizer, e.g. sultone, sulphur dioxide, benzoquinone and hydroquinone.
Patent GB-807275-A (GB)
Title: Improvements in or relating to turn-buckles
Inventor: SWEETLAND ARTHUR GEORGE
IPC: F16G11/12
Filed: 1955-12-05
Abstract: 807,275. Wire strainers. BRITISH INSULATED CALLENDER'S CABLES Ltd. Dec. 4, 1956 [Dec. 5, 1955], No. 34856/55. Class 45. In a turntable comprising an internally screw threaded sleeve 1 and a pair of end members 2 rotatable relative to the sleeve, one end member has a screw threaded part 8 engaging the thread in the sleeve and a plain shank 7 part of which is located in the sleeve. The ends of the sleeve are compressed to reduce the clearance between the sleeve and the shanks of the members, and are covered with neoprene caps 10. A set-screw 14 is provided to lock the member having the threaded part, and an hexagonal part in 19 is formed in the sleeve adjacent the set-screw. In a modification both end members have threaded parts which respectively engage right and left hand threads in the sleeve, and the hexagonal portion is formed between the sleeve threads.
Patent GB-1013305-A (GB)
Title: Improvements in or relating to private branch exchange telephone systems
IPC: H04Q3/58
Filed: 1962-09-13
Abstract: 1,013,305. Automatic exchange systems. WESTERN ELECTRIC CO. Inc. Sept. 13, 1962 [Sept. 18, 1961], No. 34932/62. Heading H4K. A subscriber having access to a PBX and a main exchange line, is provided with a keyoperated control circuit for effecting connections between main exchange and PBX subscribers, the arrangement being such that such a connection may be released either by the subscriber having the key controls or by the PBX extension. Incoming call.-Ringing current received from the main exchange over lines 47, 52 heats thermistor 51 until its resistance is low enough for the rectified current to operate relay R which locks. Relay R energizes thermal relay TO, which if the call is not answered within a specified time breaks the holding circuit for R. Relay R energizes bell 57 and lamp 72 from local sources over interrupter contacts INT-1, INT-2. When the handset 78 is lifted cradle switch contact 73 makes, and closure of the " Trunk " key T contacts 74, 75, 76 operates A which connects the handset to lines 47, 52, applies steady current to lamp 72 and brings up AH which breaks the holding circuit of R and operates TO to disable the " time out " circuit. Transfer of call.-Operation of " hold " key H releases A to bring up H in series with the handset, the former placing a holding loop across the incoming line. Lamp 72 now receives current over interrupter contacts INT-3. Return of key H releases key T through a mechanical interlock. To call the PBX, " station " key S is operated to bring up relay A1, and connect the handset to the PBX switch train over which connection to the PBX subscriber is set up. When the PBX subscriber replies, " transfer " key TRSF is operated to bring up W, which connects holding loop over transformer 104, and releases H. Release of TRSF brings up Z to switch through to the PBX subscriber. Restoration of key S disconnects the key set. Release of connection by key telephone.-Keys S and TRSF are thrown to short circuit W which releases the external connection. Restoration of TRSF releases Z to break the PBX connection. Release of connection by PBX subscriber.- When the PBX subscriber hangs up release of the supervisory relay in the PBX junctor circuit, Fig. 3 (not shown) causes reversal of the polarity received on wires T and R to release W by energizing its upper opposing winding. Relay W releases Z and the connection is released in both directions. Outgoing call.-A call from PBX extension is held, and an external connection made and then transferred to the extension in the same way as for an incoming call.
Patent GB-467443-A (GB)
Title: Improvements relating to electric condensers
IPC: C01B17/66
Filed: 1935-12-16
Abstract: An electric condenser dielectric is made by shaping and burning a composition comprising a substantial amount of titanium and zirconium dioxides, the amount by weight of the former exceeding that of the latter.  The relative proportions may be from 2 to 1 to 4 to 1.  The composition may contain from 10 to 50 per cent by weight of flux e.g. magnesia, magnesite, magnesium silicate or clay.  Specifications 139,315, [Class 22], and 389,790 are referred to.
Patent GB-489265-A (GB)
Title: Improvements in or relating to thermostatically controlled mixing valves
IPC: G05D23/13
Filed: 1937-12-17
Abstract: 489,265. Thermally-actuated valves. HEDMARK, H. B. Dec. 17, 1937, No. 34961. [Class 135] A thermostaticallycontrolled mixing- valve particularly adapted for use in connection with domestic central heating systems for regulating the mixing of hot water from the boiler with cold water from the return pipe has the thormo-sensitive element mounted in an inclined position within the fluid conduit so as to be well immersed in the flowing fluid. In the form shown, the thermal rod 4 is adjustably anchored at 11 and is coupled to a hinged valve 2, controlling the connection to the boiler, by a bell-crank lever 3 and link 10. The lever which is loaded by a spring 5 is pivoted to a bracket 6. A non-return valve 21 cooperating with a seat at the end of the return pipe 8 is held to its seat when the valve 2 is open by an abutment 13 on the lever 3.
Patent GB-212671-A (GB)
Title: Improved method of and apparatus for heat interchangers applied to the regeneration or preheating of gases
IPC: F28D19/02
Filed: 1922-12-23
Abstract: 212,671. Hollings, W. W. Dec. 23, 1922. Regenerators. - Air or other gases are heated by passing them upwardly or downwardly through a vessel E<2> containing a heat transmitting medium of loose material which has been previously heated in an upper vessel E<1> through which hot burnt gases are passed either upwardly or downwardly. In the arrangement shown, hot gases enter the chamber E<1> from a main H and escape through the outlet flue J, while the air or gas to be heated enters the chamber E<2> from the main F and escapes through the main G. The passage of the heat transmitting medium through the apparatus is controlled by valves A<1>, A<2>, B<1>, B<2> and C<1>, C<2>, adjacent valves having sealing-chambers D<1>, D<2>, D<3> -respectively between them. Specifications 23126/98 and 21739/13 are referred to.
Patent GB-1268470-A (GB)
Title: A supplement for animal feedstuffs
IPC: A23K1/18
Filed: 1970-07-20
Abstract: 1,268,470. Animal feeds. LONZA Ltd. 20 July, 1970 [21 July, 1969], No. 35083/70. Heading A5B. An animal foodstuff composition comprises an animal foodstuff and a compound of formula where R is an alkyl or an acyl group. The composition may also contain other, conventional, additives.
Patent GB-933441-A (GB)
Title: Improvements in and relating to epicyclic friction gearing
Inventor: FEARNS STANLEY
IPC: F16H13/10
Filed: 1958-11-03
Abstract: 933,441. Control of motors. GEORGE ANGUS & CO. Ltd. Nov. 3, 1959 [Nov. 3, 1958], No. 35192/58. Class 38 (3). [Also in Group XXIV] In an epicyclic friction gearing wherein rolling elements 6 in a driven (or driving) cage 7 engage a stationary outer race and a driving (or driven) inner race 1, the outer race comprises two parts, one, 4a, which is fast in a casing 5 and another, 4b, which is urged to contact the rolling elements 6 by a spring 11 the loading of which and hence the torque transmitting characteristics of the gear are controlled by an axially movable thrust ring 12. As shown, the ring 12 may be axially moved by circumferential movement of an extension 14 of one of two diametrically opposed radial pins screwed in the ring and engaging helical slots 16, 17 in the casing 5, the end positions of the pins corresponding to zero and maximum torque transmission. The extension 14 may be operated directly or remotely, e.g. through linkage. Positioning means (not shown) for the extension 14 may comprise a gate or notches in the slot 16 in which the extension may be retained by pressure of the spring 11, or means operating on the remote control. In Fig. 3 (not shown), the ring 12 may be controlled by a fork fulcrumed on the casing 5 and engaging diametrically opposed radial pins extending through axial slots in the casing. The rolling elements may be cylindrical, tapered, barrel or other shaped rollers, or, as shown, balls. The device may be provided to stop a driving electric motor when predetermined slip in the gear is established. Such a device may comprise a temperature-responsive device such as a bi-metallic strip disposed near the rolling drive transmitting part of the gear to be responsive to temperature rise due to slipping friction and arranged to actuate a switch, or a combination known as a thermal switch. The gear so equipped may be used for driving a mechanism, e.g. a motorized valve in a chemical plant, to a stop position after which the drive slips, heat is generated and the switch actuated to stop the drive. Specification 893,861 is referred to.