baber/WOPTO huggingface dataset:
Patent GB-1090000-A (GB)
Title: Welding system
Inventor: JAKSHA FRED W
IPC: B23K9/007
Filed: 1966-04-27
Abstract: 1,090,000. Gas shielded arc welding systems. WELDING RESEARCH Inc. April 27, 1966 [July 16, 1966], No. 18412/66. Heading H2H. A multi torch D.C. arc system used in tungsten inert gas welding, has a common H.F. starting generator having, for each pair of torches 10, 11 a transformer secondary winding 37 and blocking capacitors 38, 39. Choke coils 41, 42 and shunting capacitors 43, 44 block H.F. currents from the D.C. supply 15. The system may be used as part of an automatic transfer system, a switch 50 being automatically closed as the workpiece approaches the welding position hence energizing relays 51, 52 and 53, 54, the latter operating a solenoid gas valve 55. When the workpiece is located at the welding position, a switch 56 is closed operating relays 57, 58 also 59, 66, 60, 61 in parallel. The latter energizes through a manual switch 63 a transformer 30 supplying the highfrequency generator 31-37. A capacitor 64 provides power factor improvement. Contacts 66 energize through a time delay circuit 68, 69 a relay 67, 70, 71 providing through circuit 20 the arc current, the magnitude of which may be varied by a control 76, also a timer 75 which determines a first and second weld periods set by controls 78, 79, after which the solenoid valve is closed by the open circuiting of lines 80, 81. Odd electrodes may be connected to their own winding. The workpiece may be connected to a centre tap on winding(s) 30 (Fig. 2, not shown).
Patent GB-868925-A (GB)
Title: Pressure sensitive tape adhesive
IPC: C09J7/38
Filed: 1957-06-11
Abstract: A pressure-sensitive tape adhesive comprises a mixture of a synthetic rubber and a pressuresensitive adhesive acrylate ester polymer. Synthetic rubbers specified are copolymers of butadiene with styrene or acrylonitrile, butyl rubber, polychloroprene and chlorosulphonated polyethylene.  Acrylate ester polymers specified are polymethylisoamyl acrylate, polyiso-octyl acrylate, copolymers of iso-octyl acrylate with acrylic acid or acrylamide and a copolymer of fusel oil acrylate with acrylic acid.
Patent GB-1027587-A (GB)
Title: Improvements in or relating to rotary positive displacement hydraulic pumps
IPC: F04C15/06
Filed: 1964-05-04
Abstract: 1,027,587. Rotary pumps. BORG-WARNER CORPORATION. May 4, 1964 [May 31, 1963], No. 18478/64. Heading F1F. To reduce cavitation and disperse gaseous bubbles in a positive displacement rotary liquid pump, the pump includes an auxiliary inlet supplied through a control device from the pump discharge and circumferentially spaced in the direction of rotation at least one vane space in the case of a rotary vane pump and one tooth space in the case of a gear-wheel pump. In Fig. 1, (not shown), a gear pump 3 having an inlet 6 connected to a reservoir 1 and an outlet 7 connected through a control device 14 to a utilization means 2, e.g. an engine, includes auxiliary inlets 16, 18 connected to the control device through a line 15. The control device 14 controls the amount of fuel delivered to the engine and any surplus passes through the line 15 to the auxiliary inlets 16, 18 at a pressure greater than pump inlet pressure which is determined by a pressure relief valve 20. In another embodiment, a by-pass control valve 30, Fig. 2, (not shown), includes a valve spool 33 loaded by a spring 42 and subjected to pump supply pressure through a line 47 in opposition to the pressure at the auxiliary inlets 43, 44, through a line 45. A valve head 38 disposed between spool pistons 35, 36, having when seated an area such that the pressure on its pressure face is balanced by the pressure on the inside face of the piston 35 controls lines 49, 51 connected to pump discharge and the auxiliary inlets respectively. When the pressure at the auxiliary inlets falls below a predetermined value the valve head 38 unseats to connect pump discharge to the inlets. The invention may be applied to a rotary vane pump in which the auxilary inlet is two vane spaces from the main inlet in the direction of rotor rotation.
Patent GB-353190-A (GB)
Title: Improved machine for cutting tobacco
IPC: A24B7/00
Filed: 1930-06-18
Abstract: 353,190. Cutting tobacco. LEGG, 0., 31, Eyre Street Hill, Clerkenwell, London. June 18, 1930, No. 18599. [Class 5 (i).] A machine for cutting tobacco comprising a rotating drum on to which the tobacco is fed and a transverse blade co-operating with the periphery of the drum or with an adjacent cutting strip to shred the leaf, is provided with means for cutting the tobacco into suitable lengths after shredding. Tobacco fed to the drum 1 is shredded by the reciprocating knife blade 2 whence it passes to a set of discs 5 loosely mounted on and adjustably secured to a shaft 3 driven by means of a sprocket wheel thereon, the discs being spaced apart by distance-pieces. In a modification, Fig. 3, sets of intercalated rollers 10 are mounted on shafts 9 journalled in a chute 8 with scraping edge 12, or interengaging discs may be secured to the shafts 9, one shaft being driven and imparting drive to the other by means of friction rollers. In a further modification, a cutting strip in the form of a ledger extending from the periphery of the drum, coacting with a transverse knife, as described in Specification 286,421, [Class 5 (i), Farmyard &c. appliances], is arranged with the knife over the shoot 8. A receiving hopper or conveyer may be provided.
Patent GB-770860-A (GB)
Title: Improvements in or relating to processes and apparatus for the separation of a suspension of solid in liquid into its components
IPC: B01D21/26
Filed: 1955-06-28
Abstract: <PICT:0770860/III/1> In a catalytic cracking unit, cracked products containing catalyst particles pass from a reactor 21 to a fractionating column 23, and oil and particles collecting at the bottom of the column are separated in centrifugal apparatus 25 (see Group II).  The separated oil passes through a heat exchanger 29 back to the column, and the catalyst particles, having been washed with steam in the separator, are fed to a regenerator 24.  Specification 639,229 [Group II] is referred to.
Patent GB-833966-A (GB)
Title: Improvements in or relating to typewriters
IPC: B41J29/46
Filed: 1958-06-11
Abstract: 833,966. Typewriters. PAILLARD . S.A. June 11, 1958 [Aug. 26, 1957], No. 18636/58. Class 100(4) An end-of-page indicating device for a typewriter or like machine comprises an electrical circuit which is completed to light an indicating lamp 21 when the paper passes beyond a point at which it separates a resilient contact 14 and a conducting ring 13 on the typewriter platen; sure contact to the platen is arranged by an electrical contact 18 engaging with the carriage-return spring band 5 and which is connected to the platen carriage through the metal carriage-return tape 8.
Patent GB-120659-A (GB)
Title: Improvements in or relating to Hydrometers.
Inventor: STEVENSON PETER
IPC: G01N9/12
Filed: 1917-12-15
Abstract: 120,659. Stevenson, P. Dec. 15, 1917. Hydrometers.-In an hydrometer comprising a bulb B and a tube or stem C, a tube D open at its ends to the atmosphere and to the liquid in which the hydrometer is floating is provided to produce a passageway through the stem and reduce its displacement, a more open scale being thus obtained. The tube D may be connected to the base of the bulb, as shown, or to its side, and the diameter of the tube may be uniform or may vary along its length.
Patent GB-1113398-A (GB)
Title: Improved precoated sheet for use with a light sensitive reproduction coating
Inventor: JAHODA EDWARD
IPC: G03C1/775
Filed: 1966-04-28
Abstract: A backing sheet having a precoat thereon consisting of 5 to 60% of silica having a particle size not greater than 3.5 and 40 to 95% of aluminium hydroxide of particle size not greater than 1.5 and optionally 8 to 30% of a binder, the percentages being by weight and based on the total weight of silica and aluminium hydroxide, is used to prepare light-sensitive (e.g. diazo or blueprint sheets), either by coating a light sensitive layer over the precoat, or by incorporating a light-sensitive compound in the precoating solution. The backing sheet may be cloth, or paper which may be impregnated or coated with plastic, suitable binders are polyvinyl acetate, alcohol and pyrrolidone, gelatine, gum-arabic, hyroxyethyl cellulose and styrene-butadiene copolymer.  The precoating solution is preferably aqueous and may contain borax.
Patent GB-142158-A (GB)
Title: Improvements in and relating to the spring mountings of automobile vehicles
IPC: B60G11/113
Filed: 1919-02-21
Abstract: 142,158. Grant, J. C. H. Feb. 21, 1919. Springs, arrangement of. -An axle is connected to its springs so as to allow relative lateral tilting and also lateral displacement, so that the springs are not twisted or drawn closer together laterally as the axle tilts. A bracket l<1>, formed in or secured to the axle a, is fitted with a rotatable bush m and embraced by two lugs o secured to the spring. A bolt p, having lubricating- passages, passes eccentricaliy through the bush m and through the lugs o. A second bolt s passes through the lugs o and through a slot m<2> in the bush. Normally, the bolts s are at the inner ends of the slots m<2>, and the bolt at one end oi the axle moves in its slot when the axle is inclined.
Patent GB-260345-A (GB)
Title: Improvements relating to the driving of the deck gear of ships, making use of compressed air engines
IPC: F01B1/06
Filed: 1925-07-28
Abstract: 260,345. Reavell & Co. Ltd., and Reavell, W. July 28, 1925. Compressed-air engines.-Ship's deck machinery such as winches, capstans, windlasses, steering-gear, is driven by the use of compressed-air engines supplied from a reservoir through a reducing valve, which reservoir is kept charged by a constantly running compressor. In the winch shown the engine and barrel are mounted at right-angles on a common base 20. The winch has a wheel 21 engaged by a worm, the shaft of which is connected to the engine shaft through level reversing-gear controlled by a lever 24. The engine has radial cylinders staggered so that the connecting rods are side by side on a common crank 5. The frame is double-walled, and the jacket space is connected to the air supply at two points. The exhaust passes from the cylinders through a ported gudgeon pin to the crank casing and then to the atmosphere through passage 11. The cylinder inlet is controlled by a cam-operated, spring-pressed slide valve 12. The air supply is controlled by a rotary cock, Fig. 6. A small passage 33 permits a limited supply through port 29a for slow running. When lowering, the engine acts as a compressor and discharges through passages 29, 34. The adjustment of the valve permits a throttled discharge which brakes the engine. Oil is forced to the various bearings from the crank chamber 10 by means of a pump 30, the plunger 31 of which is forced downwards against a spring 32 by the cam 16, which operates the inlet valve.
Patent GB-449783-A (GB)
Title: A process for refining light hydrocarbons containing mercaptans
IPC: C10G27/04
Filed: 1935-07-04
Abstract: <PICT:0449783/III/1> Light hydrocarbons containing mercaptans are refined by selectively oxidizing the mercaptans to disulphides by controlled oxidation in the presence of a solid catalyst selected from metals and metal oxides which can easily change their state of oxidation, e.g. copper, lead, iron, chromium, nickel, manganese, silver and platinum, or their oxides, or mixtures.  As shown, a pentane-amylene fraction is delivered by a pump 2 through a preheater 3 to the top of a column 1 packed with rings of copper or iron or with hopcalite, air being introduced, with or without heating, at the base of the column through a flow meter 6.  The partial pressure of the air is not less than \ba1/10\be atmosphere.  With copper as catalyst, temperatures of 110--150 DEG  C. and pressures of 275--400 lbs. per sq. in. may be used.  With hopcalite, the process may be carried out at temperatures of 15 DEG  C. and above.  The treated distillate is withdrawn through a pipe 8 and cooler 9 and may be redistillated for the removal of disulphides.  Air and vapours pass to a condenser 12, separator 13 and tank 15 from which condensate may be recirculated, if desired, after fractionation.  Examples are given of the use of such apparatus, and also of treatment with air &c. of a liquid distillate in which hepcalite is suspended.  Treatment may also be effected in the vapour phase.  The Specification as open to inspection under Sect. 91 refers also to the use of aluminium rings. This subject-matter does not appear in the Specification as accepted.
Patent GB-166545-A (GB)
Title: Apparatus for delivering measured quantities of liquids
IPC: G01F3/26
Filed: 1921-07-15
Abstract: 166,545. Wydler, H. July 15, 1920, [Convention date]. Liquid-meters.-Relates to the kind of automatic apparatus for delivering measured quantities of liquid, wherein a tank divided into two chambers oscillates intermittingly to fill and discharge the chambers alternately, the tank being held in the filling positions by a locking-device. The invention consists in releasing the locking- device automatically.by the pressure of the liquid when the measuring chamber is full. The tank rocks on a hollow shaft a and is divided into two measuring chambers I, II. The liquid enters the uppermost chamber II through the hollow shaft a and through a slot g in the hub of the chamber, the other chamber I discharging its contents through slots in the hub and in an outlet portion L", Fig. 5, of the hollow shaft a. When the liquid in the chamber II reaches the top a floating valve c closes an air vent and the increasing pressure of the liquid pushes down a locking-pin d so as to liberate the tank. The weight of the liquid then rocks the tank so as to bring the chamber I into filling position and discharge the chamber II through the outlet L" when a similar operation takes place in connection with the chamber I. The measuring-chambers are mounted in an air-tight casing f containing carbonic acid gas.
Patent GB-147474-A (GB)
Title: Improvements in or relating to the hydrogenation of naphthalene
IPC: C07C5/10
Filed: 1920-07-08
Abstract: Naphthalene is hydrogenated by treating while in the fused state and at a temperature above 100 DEG  C. with the theoretical quantity of hydrogen under pressure in the presence of a catalyst. Decahydronaphthalene or other less highly hydrogenated products are obtained, and these products are suitable, as lamp, motor, and lubricating oils, &c.  In an example, naphthalene is purified by fusion with fullers' earth or similar porous material, after separation mixed with a catalyst consisting of finely divided nickel precipitated on a porous material, and the spongy mass so obtained treated at a temperature of 120 -150 DEG  C. with hydrogen under 3-100 atmospheres pressure.ALSO:Naphthalene to be hydrogenated is purified by fusion with fuller's earth or similar porous material.
Patent GB-1498259-A (GB)
Title: Electrostatographic reproduction machine
IPC: G03G15/16
Filed: 1975-05-08
Abstract: 1498259 Transferring developed images XEROX CORP 8 May 1975 [25 July 1974] 19409/75 Heading G2H An electrostatographic copying machine is provided with a manually operable switch for changing the output of a corotron positioned between the development and transfer stations in accordance with the contrast in the original document. The charge from the corotron neutralizes the charge on the toner in background areas of the developed image whilst increasing the charge on the toner in image areas, and then suppresses the transfer of spurious background toner to the copy sheet. The charges on the toner depend on the contrast in the original document and thus the switch, which varies the D.C. bias applied to the secondary winding of a transformer connected to an A.C. source and the corotron is provided to vary the corotron output. The output may also be varied by keeping the D.C. bias constant and varying the A.C. source.
Patent GB-646714-A (GB)
Title: Process for polymerizing acrylamides
IPC: C08F20/56
Filed: 1947-07-21
Abstract: Water-soluble polymers of acrylamide or alpha-methacrylamide are formed by heating the amide in a mixture of water and an aliphatic water-miscible alcohol having 1 to 4 carbon atoms in the molecule, in the presence of a polymerization catalyst soluble in the mixture. The aqueous medium preferably contains 5-40 per cent by volume of the alcohol, products of lower molecular weight and viscosity being obtained with increasing proportions of alcohol.  Suitable alcohols are methyl, ethyl, propyl, isopropyl and tertbutyl alcohols and the catalyst may be hydrogen peroxide, potassium persulphate or sodium perborate.  In the examples, the mixtures are refluxed for 2 1/2 hours at 90 DEG  C., the polymers precipitated and extracted with ethanol and dried under vacuum.  The products have a content of about 20 per cent by weight of acrylimide groups, up to 3 per cent of acrylic acid groups and the remainder acrylamide.ALSO:Acrylamide is prepared by passing dry ammonia gas into acrylyl chloride dissolved in dry benzene.  The ammonium chloride is filtered off, the filtrate chilled and the acrylamide crystallizes.  The product may be recrystallized from benzene and dried under vacuum.
Patent GB-1316843-A (GB)
Title: Filter
IPC: F24F8/80
Filed: 1970-04-29
Abstract: 1316843 Air filter units DELBAG-LUFTFILTER GmbH 29 April 1970 [29 April 1969] 19580/80 Heading B1T A filter unit for filtering air entering a room comprises a tapering housing 4, suitably the frustrum of a square pyramid, having a filter cell 7 across its bottom end and, leading from the top end opposite the filter, a connecting piece 5 which is sealed by means of a peripheral sealing ring to or through an aperture in a horizontal surface 3 forming a false ceiling beneath the true ceiling 1. The aperture in the surface may be surrounded by an upward or downward extending sleeve and various methods for sealing the unit to such a sleeve are described (Figs. 2-4 and 6). The false ceiling may be formed of discreet sections each of a similar size to the filter unit (Fig. 5, not shown). The filter cell may also be equipped with a grill or anemostat for air distribution or with a closing shutter (Fig. 4, not shown).
Patent GB-1313413-A (GB)
Title: Electrophoretic method of image reproduction
IPC: G02F1/1685
Filed: 1970-04-23
Abstract: 1313413 Matrix displays MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 23 April 1970 [23 April 1969 (2) 12 June 1969 (4)] 19612/70 Heading G5C [Also in Division H4] A method of producing an image comprises applying a uniform D.C. electric field across a layer formed by a suspension of an electrophoretic material to change the optical properties of the suspension, i.e. in that the electrophoretic particles migrate with or against the electric field and the reflectivity on either side of the layer correspondingly alters, and thereafter applying a further, spatially varying, electric field to the suspension to produce a further change in the optical properties of the suspension so as to produce the required display. The further field may be an A.C. field, or a D.C. field of opposite polarity if greater contrast in the display is required. Specification 1,313,412 is referred to and discloses the types of device in conjunction with which the present method is described. In addition to the methods of applying electric fields disclosed therein, the present Specification describes the use of a corona discharge and of triboelectrostatic charging to provide the uniform electric field, Figs. 6a and 6b (not shown).
Patent GB-802861-A (GB)
Title: Improvements in or relating to the sealing of hydrogen-gas cooled electric machines
IPC: F16J15/40
Filed: 1957-06-21
Abstract: 802,861. Stuffing-box substitutes. SVENSKA TURBIN AKTIEBOLAGET LJUNGSTROM. June 21, 1957 [Aug. 4, 1956], No. 19615/57. Class 122 (5). In a hydrogen cooled electric machine sealed by oil supplied to seals 4 around the shaft 1 and returned from outlet chambers 7, 8 on each side of the seal, leakage of sealing oil into the machine from the innermost outlet chamber 8 is prevented by hydrogen circulated in a closed circuit and supplied under pressure to a first space 14 around the shaft inwardly of the chamber 8 and discharged from a second space 16 located between the first space 14 and the chamber 8. A pump 6a draws sealing oil from two containers 11 and 12, connected in parallel, and discharges it to the seal 4 through a conduit 6, the oil being returned to the containers 12 and 11 from chambers 7 and 8 through pipes 9 and 10 respectively. Hydrogen is sucked from the top of container 11 through a pipe 19 and filter 20 by a blower 18 which discharges it through pipe 15 to the space 14. The blower 18 creates a pressure in the container 11 less than that in the machine casing 2 so that hydrogen flows from space 14 to space 16 and thence through a pipe 17 back to the container. A restricted vent nozzle 22 may be fitted on the container 11, the hydrogen escaping therefrom being replaced from the cooling system.
Patent GB-979725-A (GB)
Title: Burst recording
Filed: 1962-05-22
Abstract: 979,725. Picture-and-signal recording; intermittent records. BACH AURICON Inc. May 22, 1962 [May 29, 1961], No. 19623/62. Heading G5R. Improved frequency response in recording telemetering signals on the magnetic stripe on a kinematograph film is provided by providing a recording head 27 at the picture gate, so that intermittent bursts of recording 26a occur during pull-down at a relatively high film speed. A sound commentary 26b of usual form may be recorded at 33. The usual pre-striped track may provide two channels, or a plurality of tracks may be provided (Fig. 3) at the expense of picture space. A projector with similarly located playback heads, displays the commentary and pictures conventionally and displays the telemetered signals on an oscilloscope 42. Preferably, the pull-down follows the timescale a of Fig. 6, enabling the film to be played back at a uniform speed corresponding to mean pull-down speed. Where a conventional pull-down (b, Fig. 6) is used, and the signals are recorded on an optical variable-density track, Fig. 8, a rotary, variable density disc 73, driven with the camera shutter, provides a compensated exposure during the variable film speed represented by the region t<SP>11</SP>of the curve b, Fig. 6.
Patent GB-918174-A (GB)
Title: Improvements in and relating to fuzes for land mines
IPC: C07C29/62
Filed: 1960-06-02
Abstract: 918,174. Land mines. RHEINMETALL G.m.b.H. June 2, 1960 [June 4, 1959], No. 19629/60. Class 9 (2). Relates to the land mine described in Specification 918,173, the claims being different and the fuze parts being described in greater detail, see Fig. 2.
Patent GB-185289-A (GB)
Title: Improvements in electric switch boxes
IPC: H01H13/70
Filed: 1921-07-21
Abstract: 185,289. Davis, A. L. July 21, 1921. Switchboards; switches, quickaction.-A gas-tight switchbox comprises a cable troughing 8 on which are detachably mounted covered switch units, the bases 10 of which engage one another by tongue-andgroove or dovetail joints 34. Cables enter the troughing 8 through fairleads 9 where they are bound with water-tight sleeves 41. Each switchunit comprises a bracket 11 fixed to the base 10, a switch bar 12 pivoted to the bracket at 13 and carrying a cam 18 adapted to cooperate with a blade spring 19, and a plunger 15 and sleeve 16 connected by a pin-and-slot 4 and normally pressed apart by a spiral spring within the sleeve 16. The plunger 15 is also connected by a pin-and-slot 14 to the switch bar 12. When the knob 25 is actuated, a quick operation is caused by the combined action of the spiral spring and of the blade spring 19. The contacts 22 are connected to terminals 30 fixed below the base 10, and the bridging contact on the switch bar 12 comprises a contact rivet 21 and a contact-washer 21<x> both insulated from the bar. The sleeve 16 moves in a spigot 17 on the bracket 11, and a nut 27 on the spigot clamps the cover 26 in position.