baber/WOPTO huggingface dataset:
Patent GB-1517293-A (GB)
Title: Locomotive drive system
IPC: F16H61/42
Filed: 1975-10-20
Abstract: 1517293 Hydrostatic transmission control HUNSLET (HOLDINGS) Ltd 20 Oct 1975 [22 Nov 1974] 50806/74 Heading F2W A hydrostatic transmission control system for a rail vehicle having an engine-driven variable displacement swash-plate pump 10 in closed circuit 12, 13 with a motor 11 driving the vehicle wheels comprises a manual control valve 28 supplying pressure air to engine throttle and pump displacement adjusting servos 32, 20 and an output speed responsive flow control means 14 supplying fluid at a pressure proportional to output speed to a pump displacement adjusting servo 19. The servos 19, 20 have a common rod 23 connected to a pump displacement adjusting lever 24. On movement of a lever 29 to open the valve 28 pressure air supplied to the servo 32 increases engine speed and the pressure air supplied to the servo 20 increases pump displacement. The resulting increase in output speed increases the output speed responsive pressure supplied to the servo 19 to further increase pump displacement. As shown, the flow control means 14 comprises a pump which delivers liquid at a pressure proportional to output speed to the servo 19. In a modification, not shown, the flow control means 14 comprises a valve which meters air to the servo 19 at a pressure proportional to output speed. Movement of the lever 29 to an initial position 43 opens a valve 41 to vent the transmission circuit pressure and thus neutralize the transmission.
Patent GB-1454764-A (GB)
Title: Film cartridge device
IPC: G03B21/32
Filed: 1973-11-02
Abstract: 1454764 Film cartridges CIBA-GEIGY AG 25 Oct 1974 [2 Nov 1973] 50928/73 Heading B8M The unreeling of a length of reeled film 6 on a rotatable central core 9 encased in a cartridge 1 having two side walls 2, 3 which cover the reeled film, is prevented by sealing a strip 14 of flexible material over a central hole 12 in at least one side wall 2 of the cartridge and over a flat end of the core 9 or over a separable insert 10 which engages with the core 9 and which has a flat end 11 thereto, the flat end 11 being exposed through the hole 12 so that it is substantially coplanar with the wall 2, thus disabling the core 9 from rotating whilst the strip is in position. By substantially coplanar is meant that the flat end 11 is coplanar with the wall 2 or is proud to an extent of up to 0À040 inches or is below the plane of the wall 2 to an extent of up to 0À020 inches. As shown, a light-tight circular film cartridge 1 comprises side walls 2, 3 and a circular peripheral wall 4 having a mouth 5 therein through which the free end of the film 6 may be drawn. An insert 10 is mounted to rotate with the core 9. The strip 14 of cellulose acetate covered with a pressure sensitive adhesive has been pushed firmly over the hole 12 and the flat end 11 of the insert 10 and is sealed to the surrounding area of the wall 2. The core 9 may be freed by peeling off the strip 14 or by cutting around the points a, a 1 . In modifications, (a) instead of pressure sensitive adhesive, a water activated or a heat activated adhesive covering is provided on the strip 14, (b) the sealing side of the strip and the area around the hole 12 are covered with a layer of an impact adhesive and (c) the cartridge 1 and the core 9 or the insert 10 are made of polyethylene, polystyrene or another plastics material to which polyethylene may be heat welded and an uncoated polyethylene strip 14 is heat welded over the hole 12 and the flat end 11.
Patent GB-1247605-A (GB)
Title: Separation of olefins and epoxides
IPC: C07C11/02
Filed: 1969-10-16
Abstract: 1,247,605. Separating mono-olefins. ATLANTIC RICHFIELD CO. 1À6 Oct., 1969 [12 Nov., 1968], No. 50939/69. Heading C5E. [Also in Division C2] Mono-olefins C 6-18  are separated from monoepoxides C 6-18 , contained in mixtures wherein the boiling ranges of theolefins andepoxides overlap, by passing said mixture together with a saturated hydrocarbon C 5-8  solvent through a bed of silica gel, collecting a solvent-olefin fraction, subsequently passing a polar solvent through the bed of silica gel following passage of said saturated hydrocarbon solvent to remove said epoxides fromsaid bed, the solvent being sufficiently polar to displace the epoxide but not such as to be strongly adsorbed so that it cannot be removed by washing with a hydrocarbon solvent, collecting a polar solventepoxide fraction and recovering said olefins and epoxides. from said respectivefractions. The silica gel bed may beregenerated following the removal of said epoxides by washing with the hydrocarbon solvent.
Patent GB-1038460-A (GB)
Title: Process for purification of nylon salt solutions
IPC: B01D15/00
Filed: 1964-12-17
Abstract: Active carbon, intended for use in the purification of nylon salt solutions formed by reaction of approximately equal molar quantities of a dibasic acid and a diamine, is treated before such use with a dilute aqueous solution of the dibasic acid and thereafter with sufficient of a dilute aqueous solution of the diamine to neutralize the dibasic acid remaining in the carbon. Specified acids are: adipic acid, pimelic acid, suberic acid, azeloic acid, sebacic acid, isophthalic acid, 5-t-butylphthalic acid and dodecandioic acid. Specified diamines are: hexamethylenediamine, p-xylylene diamine and bis-p-aminocyclohexylmethane.ALSO:A nylon salt solution, formed by reacting a dibasic acid and a diamine, is purified by treatment with active carbon which has been treated with a dilute aqueous solution of the dibasic acid and thereafter with sufficient of a dilute aqueous solution of the diamine to neutralize the dibasic acid remaining in the active carbon.  Specified acids are: adepic, pimelic, suberic, azelaic, sebacic, isophthalic, 5 - t - butylisophthalic and dodecandoic. Specified diamines are: hexamethylene diamine, p-xylylene diamine and bis-p-aminocyclohexylmethane.
Patent GB-1408794-A (GB)
Title: Earth and rock boring tool
IPC: E21B10/50
Filed: 1972-11-09
Abstract: 1408794 Boring earth &c UNION INDUSTRIELLE BLANZY-OUEST 9 Nov 1972 [10 Nov 1971] 51859172 Heading E1F An earth-boring tool has a disc-shaped cutter comprising a circular metal support 5 provided at its periphery with contiguous plates 4 of wear-resistant material, the planes of the plates substantially coinciding with the plane of symmetry of the cutter perpendicular to its axis of rotation. The plates 4 which are of carbides, nitrides or ceramics, are brazed in a peripheral groove in the support 5.
Patent GB-1173979-A (GB)
Title: Manufacture of Aliphatic Aldehydes and Diols by Radiolysis
IPC: C07C45/00
Filed: 1967-11-15
Abstract: 1,173,979. Aliphatic aldehydes and glycols. IMPERIAL CHEMICAL INDUSTRIES OF AUSTRALIA & NEW ZEALAND Ltd. 15 Nov., 1967 [12 Dec., 1966; 21 Dec., 1966], No. 51948/67. Heading C2C. Aliphatic aldehydes and minor proportions of aliphatic glycols are obtained by irradiating aliphatic alcohols with a source of high energy radiation in the presence of a solid catalyst consisting of cadmium oxide, zinc oxide, α- alumina, lead monoxide, red lead, antimony trioxide, bismuth trioxide, vanadium pentoxide, tungsten trioxide, molybdenum trioxide, cobalt oxide or copper which has been superficially oxidized to cuprous oxide. Specified sources of radiation are accelerated electrons, γ-rays, #- rays, X-rays and corpuscular irradiation produced by atomic fission. The treatment may be given in the liquid or vapour phase. The production of glycols may be restrained by effecting the treatment in the presence of free radical scavengers, e.g. iodides, iodine, boron compounds, benzoquinone, ferric iron, oxygen, nitrate ions, nitrous oxide, chlorine, diphenylpicrylhydrazyl, polymerizable vinyl monomers and cupric or cuprous oxide. Examples are given of the treatment of methanol, ethanol and n-butyl alcohol. Apparatus is described.
Patent GB-1242004-A (GB)
Title: Electrical contact assembly
IPC: H01B1/00
Filed: 1968-11-04
Abstract: 1,242,004. Electric contacts. WESTINGHOUSE ELECTRIC CORP. 4 Nov., 1968 [13 Nov., 1967], No. 52085/68. Heading H1N. [Also in Divisions B3, C6-C7 and H3-H5] An electrical contact assembly comprising a contact button 39 on an arm 37 is produced by (1) melting the arm at the button securing region, (2) depositing metallic powder upon said region by plasma-jet torch to form the button, and (3) hardening the assembly by subjecting it to one or more cold working, e.g. pressing or coining, treatments. Hardening may also be effected by age or precipitation hardening. In a mass-producing arrangement shown, arm-forming strip 53 from a delivery reel 55 is transported, by drive rolls 57, through a straightener 65, and edge guides 67, under twin torches 21 operating under an exhaust hood 61, and through surface cleaning rolls 69, to a coining and shearing machine 71. One or both torches are operative respectively for welding contact material along the strip centre for producing staggered pairs of assemblies (Fig. 9, not shown) or along the opposite strip edges for producing transversely aligned pairs of assemblies. The arm 37 is of copper or copper chromium. The contact metallic powder may comprise one of the following (percentages by weight, where given):- 35-80% Ag, 20-65% W, 35% Ag, Cu, P (88, 10, 2%), 65% W. 35% Ag, Cu (90, 10%), 65% W, Ag, Si, 65% Ag, 35% Mo, 65% Ag, 35% SiC, Ag, WC, Ag, Ti, 90À25% Ag, 5% Cu, 4À5% CdO, Ag, TiC, Ag, Ag, Ni, Ag, Co. In a multi-layer assembly a layer of fine Ag powder is welded on to an initial layer of Ag, W. The Specification also includes examples of plasma and work arc power, arc gap, rate of plasma gas and powder feed, strip travel and arc oscillation, strip and button thickness, thickness reduction, cold working pressure, and resultant hardness; analyses of actual contact materials; and assembly tests for temperature rise, overload, short-circuiting and endurance.
Patent GB-1131416-A (GB)
Title: Hydraulic valve device
IPC: F15B11/028
Filed: 1965-12-08
Abstract: 1,131,416. Valves. BORG-WARNER CORP. 8 Dec., 1965 [30 Dec., 1964], No. 52133/65. Heading F2V. A valve arrangement for providing a number of predetermined pressures, certain of which may be regulated at different values, has a first inlet leading to an annular groove 29 controlled by a first spool valve 25 and spaced from another such groove 34 which is connected to a first passage 33 that leads to a first outlet. (not shown), and to an annular groove 35 controlled by a second spool valve 26 which is spaced from another such groove 39 that leads to a recess 40 above a third spool valve 43, which recess is provided with a second outlet. The valve 43 controls a sump groove 44. The first valve 25 has a control chamber 47 open to groove 29 and communicating with a space between the end land 25a and the casing cover 16 via a passage 50 in the land. The control chamber 48 of the second valve 26 opens to groove 35 and communicates with a space between the end land 26b and a casing 19 for a pilot valve mounted on the main casing. The control chamber 49 of the third valve 43 is open to the recess 40. The first valve 25 is loaded by a pair of springs 55, 56, the effect of which is varied in dependence upon the position of a piston 57. The second and third valves are each loaded by single springs with a fixed rate. The loadings of other valves may be similarly varied. The casing 19 houses a spring-loaded pilot spool valve 72 with the inner end of the valve bore leading to exhaust and the inner face of the piston 57 via passage 71. The pilot valve 72 is actuated by fluid supplied to a second inlet through an orificed check valve 78; the pilot valve controls the fluid from a third inlet to the chambers 20 above the piston 57 by way of a further orificed check valve 82.
Patent GB-1316040-A (GB)
Title: Liquid developer used for electrophotography
IPC: G03G9/135
Filed: 1971-11-11
Abstract: 1316040 Electro-photography FUJI PHOTO FILM CO Ltd 11 Nov 1971 [13 Nov 1970] 52502/71 Heading G2H A liquid developer comprising toner particles dispersed in an insulative carrier liquid contains 0À001-5 parts of a copolymer of a half-C 6-24  alkylamide of maleic acid and diisobutylene together with up to 0À5 parts of a 1-hydroxy-C 2-4  alkyl-2-C 6-22  alkyl-2-imidazoline (as soluble positive charge control agents) per 1000 parts of carrier liquid. The MW of the copolymer may be 1,000-50,000 and the mol ratio of half alkylamide to diisobutylene may be 1:1 to 1:5. The ratio of imidazoline to copolymer may be 0À125-20. A resin-grafted toner may be employed.
Patent GB-1239770-A (GB)
Title: Steering arrangements for motor vehicles
Inventor: JENVEY LESLIE RICHARD
IPC: B62D3/12
Filed: 1968-11-07
Abstract: 1,239,770. Power-assisted steering mechanism. ADWEST ENG. Ltd. 7 Nov., 1968, No. 52893/68. Heading B7H. [Also in Division F2] In power-assisted rack and pinion steering mechanism, the rack housing has an outward radial projection thereon and resilient means are disposed between opposite sides of the projection and a part, separate from the rack housing, of the mechanism or mounting means thereon, the arrangement being such that initial rotation of the pinion from the straight-ahead position is absorbed in part by compression of the resilient means to provide, in effect, lost motion between the pinion and rack. This is said to provide a reduced steering ratio at or near the straight ahead position. As shown, the rack housing 10 has a bracket 16 for attachment to the vehicle chassis 15, and the pinion 1 is mounted in a housing 14 positioned on the rack housing 10 by rubber or plastics rings 12 located on either side of an annular projection 13. In another embodiment, Fig. 2 (not shown), the rack housing has a projecting mounting bracket slidably connected by a pin to mounting means securable to the vehicle chassis and carrying conical resilient blocks arranged on either side of the bracket. The blocks may have voids formed therein to produce desired compression characteristics.
Patent GB-1395204-A (GB)
Title: Electrical amplifier
IPC: H04M1/76
Filed: 1972-11-16
Abstract: 1395204 Automatic volume control; substation circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 Nov 1972 [19 Nov 1971] 52896/72 Headings H4R and H4K In an amplifier which is powered over the same transmission line as that on which A.C. signals are transmitted to or from the amplifier, there is provided an amplifier stage which is arranged to have a voltage amplification which decreases linearly with the magnitude of the power supply current supplied to the amplifier over said line, within a predetermined control range, the linear characteristic being achieved by applying to said amplification stage a control current which is equal to the difference between a constant current produced by a constant current generator forming part of the amplifier and a current which is linearly dependent on the supply current. Two such amplifiers are used in a telephone substation circuit, one for each direction of transmission. The signal of microphone 10 is applied via a preamplifier 11 having balanced outputs to the input of a difference-voltage control amplifier 12-15, forming said controlled amplifier stage, of which the outputs are coupled to the input of an output amplifier 20-22 via voltage followers 16-17 and 18-19, the output amplifier having its output connected to the diagonal P-Q of bridge circuit 23-25 of which the branch Q-S is formed by the input impedance of the subscriber line a-b. The incoming signal amplifier is connected to bridge point R and via a capacitor 30 to wire b of the line and comprises a difference voltagepreamplifier 26-29, a difference voltage control amplifier 31-34 (acting as the control amplifier stage) and a difference-voltage ouput amplifier 35. Bridge circuit 23-25 acts as the antisidetone circuit when in the balanced state. Control of amplification.-Control amplifier stages 12-15 and 31-34 are controlled in like manner, by using current control circuitry 44-50, to produce a constant current I s  which is independent of the line voltage and further control current circuitry 41, 53-054 and 43, 55-56 for supplying each control stage with a current I s -I r , the current control and constant current circuitry being of a type described in "Philips Technisch Tijdschrift" Vol. 1 1971 pp. 1-12. The current Ir is shown to be given by I r R 57 = (I L -I V ).R 23 , and as I V  is said to be substantially constant I r  is proportioned to the line current I L . By use of the arrangement shown the current flowing in each of the four transistors 12, 13, 31, 32 is equal to I s -(I r /2) and this is shown to result in the voltage amplification of the control amplifier stages being a linearly decreasing function of the line current I L , for a range of I L  defining a control range of about 6dB. The circuit is said to be suitable for production as an integrated circuit, particularly if the capacitor 30 is replaced by a Zener diode or a series connection of a plurality of diodes.
Patent GB-1597348-A (GB)
Title: Methods and apparatus for forming and securing a strap loop about a package
IPC: B65B13/22
Filed: 1977-12-20
Abstract: In this method, a primary band loop is formed by introducing a length of band into a circular guide (28). The free band end is guided in a circle on the inner circumference of the guide (28), until the free band end overlaps with part of the loop. Next, the primary band loop is retained and a guide (28) is pressed off vertically downwards. The loop (30) is then widened until it is large enough to span the package (24) to be tied. This is carried out by retaining the free band end while the band is fed out. The package (24) is then guided over the widened loop (30) and the loop (30) is laid round the package (24). The loop (30) can then be tautened and joined together by fusing the overlap region. <IMAGE>
Patent GB-1272800-A (GB)
Title: Tubular and porous fibres
Inventor: FABRE ALBERT
IPC: B01D71/42
Filed: 1969-10-29
Abstract: 1,272,800. Porous fibres for use in ultra filtration. RHONE-POULENC S.A. 29 Oct., 1969 [29 Oct., 1968], No. 53077/69. Heading B1X. [Also in Division B5] A tubular fibre containing a continuous hollow channel disposed co-axially or parallel to the axis and having a "skin", in which any pores are less that 500 in diameter, over its external and/or internal surface, and having in contact with the skin or skins a network of mutually intercommunicating pores of 500 to 30,000 diameter and being substantially and preferably entirely free of vacuoles (non- communicating voids), the said network being at least a quarter the thickness of the fibre, the remainder of the fibre if any being different from the vacuole-free network may be made by (a) extruding a fibre-forming polymer solution from an annular orifice spinneret, (b) gelling the external and/or internal peripheral zone and (c) simultaneously or subsequently subjecting one or both of the surfaces whether gelled or non-gelled to the action of a coagulating agent. In the examples the "skin" was from 0.5Á to 100Á thick. The fibre may be a polymer of acrylonitrile (AN), AN/methyl methacrylate (MMA) or particularly AN/ MMA/ potassium p-vinyl oxy benzene sulphonate or a polyurethane or polyvinyl chloride. The tubular fibres according to the invention may be used in reverse osmosis, in separation of gases and in ultra filtration. Thus in the examples nitrogen is transmitted through the fibre wall at internal pressures in excess of 1.5 to 2.5 bars and, a water pressure of 2.0 bars gives a flow rate through the fibre walls of 6 to 55cc/hour/metre of fibre.
Patent GB-1167254-A (GB)
Title: Fluid Catalytic Cracking
IPC: C10G11/18
Filed: 1967-11-24
Abstract: 1,167,254. Catalytic cracking. TEXACO DEVELOPMENT CORP. 24 Nov., 1967 [1 Dec., 1966], No. 53631/67. Heading C5E. An apparatus for fluid catalytic cracking in which at least one hydrocarbon stream is contacted with a fluidized cracking catalyst in a reactor chamber, catalyst is withdrawn from the lower portion of said reactor chamber and passed to a stripping chamber wherein it is contacted with a stripping medium, stripped catalyst is passed to a regeneration chamber wherein it is contacted with an oxygen-containing gas, and regenerated catalyst is contacted with a hydrocarbon stream and passed to said reactor chamber, comprises a tapered reactor chamber having its greatest diameter in the upper part and a stripping chamber below the reactor chamber, means to introduce a hydrocarbon stream and catalyst into the tapered portion of said reactor chamber, means for introducing steam into the tapered portion of said reactor chamber below the point of introduction of the hydrocarbon stream and into contact with catalyst passing down through the reactor chamber, means for introducing steam into the lower portion of the stripping chamber and means for passing gaseous effluent and stripping medium rising from the stripping chamber into the reactor chamber at a point above the introduction of the hydrocarbon stream into the reactor chamber. As shown, in the tapered reactor, fresh feed is introduced at 17, recycle feed is introduced by riser 21, steam is introduced into the reactor at 37 and into the stripping chamber at 51 and 53; partly stripped catalyst from the reactor descends through valves 40 and 41 into the stripping chamber 42 where stripping is completed and thence to the regenerator. Regenerated catalyst is returned to the reactor with the fresh and recycle feeds.
Patent GB-1150360-A (GB)
Title: Improvements in method and apparatus for Determining the Volumetric Mass or Density of a Gas
IPC: G06G7/57
Filed: 1966-11-30
Abstract: 1,150,360. Measuring density of a gas electrically. COMPAGNIE FRANCAISE THOMSON HOUSTON - HOTCHKISS BRANDT. Nov.30, 1966 [Dec. 2, 1965], No.53721/66. Heading G1N. [Also in Division G4] The density of a gas at temperatures above its critical temperature is measured using the equation P - T.X - k. (T-A). f(X) = 0 where X is given by X = m/m o   P o /T o , m being the density at temperature T and pressure P and m o  being its density at T o , P o . A and K are experimentally determined constants of the gas and f(X) is a characteristic function of the gas. Thus by solving the above equation for X, the density may be determined. In the embodiment, the output signal from a temperature measuring device 1, Fig. 4, is fed to operators 3, 4 in which functions representative of the absolute temperature T and the function (T-A) are generated. These signals, together with that from a pressure measuring device 2 and a simulating device 5, whose output represents the desired quantity X, are fed to a computor 6, (see also Division G4), in which the above function is generated. This signal is then fed to a servocontrol system 7, connected to the device 5, which regulates the output from the latter until the output from the computer is zero, at which point the output of the device 5 is equal to the quantity X from which the density of the gas is determined. This measurement of the quantity X may also be used to calculate the volumetric or mass flow-rate of a gas at temperature T o  and pressure P o , which are given by the following equations:- volumetric flow-rate = K#X.#P mass flow-rate = K<SP>1</SP>#X.#P where #P is the difference in pressure across a constriction having output coefficient characteristics K or K<SP>1</SP> volumetric flow-rate = k.Q.X mass flow-rate = Q.m = Q. m o . T o /P o  .X where Q is the volumetric flow-rate of the gas at T, P measured by a volumetric counter and k is a coefficient function of the specific weight of the gas at T, P. The circuits for these calculations are described and shown in Figs. 6a, 6b and 7 (not shown).