baber/WOPTO huggingface dataset:
Patent GB-858858-A (GB)
Title: Relating to treatment of platinum catalyst
Inventor: SCHWARZENBEK EUGENE FREDERICK
IPC: B01J23/96
Filed: 1957-02-06
Abstract: Platinum catalysts supported or dispersed on a carrier and containing absorbed and/or combined oxygen are reconditioned by treatment with a gaseous mixture containing hydrogen carried out at least initially in a zone maintained at a hydrogen partial pressure of 0.01 to 5 p.s.i.a. and at at least 400 DEG F.  The treatment is particularly applicable to platinum catalysts which have been regenerated by treatment with a gaseous mixture containing oxygen at 400 to 1200 DEG F. to remove carbonaceous contaminants resulting from its use in hydrocarbon conversion processes such as hydroforming, dehydrogenation, isomerisation, desulhpurisation, hydrogenation and dehydrocyclisation.  In such processes the hydrocarbon is contacted with the platinum catalyst at about 400 DEG  to 1100 DEG F. and up to about 2500 p.s.i.g. with a weight space velocity of 0.01 to 40.  In some processes hydrogen can be added at the rate of 500 to 20,000 s.c.f. (measured at 60 DEG F. and 760 mm. Hg)/bbb oil, e.g. in hydroforming naptha at 750 DEG  to 1050 DEG F. and 25 to 1000 p.s.i.g. with a weight space velocity of 0.1 to 15 using 1000 to 10,000 s.c.f. H2/bbb oil.  The catalyst may contain 0.05 to 20% wt. of platinum which is dispersed on a carrier, e.g. an inorganic oxide such as alumina, silica, silica-alumina, magnesia, kieselguhr, pumice or zinc aluminate spinel or activated charcoal.  The catalyst is treated with hydrogen for 5 minutes to 5 hours at not more than 950 DEG C. The treatment may be carried out in two stages with the following conditions:-(a) a hydrogen partial pressure of 0.05 to 5 p.s.i.a., 400 to 825 DEG F., 10 minutes to 2 hours; (b) a hydrogen partial pressure of 6 to 50 p.s.i.a., a temperature 50 to 400 DEG F. higher than in (a) subject to a maximum of 950 DEG F., 15 minutes to 3 hours.  The oxidative regeneration of catalyst preceding the reconditioning can be effected initially with nitrogen diluted air (0.5% mol O2) at 500 DEG F. and then increasing the proportion of air and also the temperature until undiluted air is used at 1000 DEG F. The regeneration may also be effected by a two stage process under the following conditions:-(a) 0.5 to 10 hours, 400 to 700 DEG F. and 0 to 50 p.s.i.g. with a gas containing 0.05 to 2% mol O2, and (b) 5 to 40 hours and 750 to 950 DEG F. with the same gas.  In an example the efficiency of a catalyst regenerated by the first method and recondition at 500 DEG F. with a nitrogen/hydrogen mixture having a hydrogen partial pressure of 0.075 p.s.i.a. for 30 minutes is compared with a similar catalyst reconditioned with undiluted hydrogen (=14.7 p.s.i.a.) at 800 DEG F. for 1 hour with reference to the improvement in octane number of a 236-425 DEG F. petroleum fraction containing 9% vol. aromatics, 1% mol olefins and 0.05% wt. sulphur by hydrogenation at 940 DEG F., 200 p.s.i.g., an hourly weight ratio of oil/catalyst/hour of about 45 and about 3 mols H2/mol feed.
Patent GB-721604-A (GB)
Title: Improvements relating to cam systems of knitting machines
Inventor: SHORTLAND ARTHUR
IPC: D04B15/32
Filed: 1952-02-15
Abstract: 721,604. Knitting-machines. MELLOR, BROMLEY, & CO., Ltd. Feb. 9, 1953 [Feb. 15, 1952], No. 4060/52. Class 74 (2). The outer or upper edge or wall of that part of the knitting cam race defining the stitchdrawing cam 18 and knocking-over cam 19 is made continuous from clearing level or height to the knocking-over point, and the opposing edge is defined by a clearing cam 17, arranged in advance of the stitch-drawing cam, and guard cam means 15 opposing both the stitch-drawing and knocking-over cams. The invention is described in connection with a multi-feeder cylinder-and-dial interlock machine, and the stitch-drawing, knocking-over and guard cams at any feeder are mounted upon a block 9 so as to be adjustable together. The stitch-drawing and knocking-over cams are formed integrally.
Patent GB-138900-A (GB)
Title: Bessemerizing iron
IPC: C21C5/44
Filed: 1920-02-10
Abstract: 138,900. McCaffery, R. S. Nov. 13, 1918, [Convention date]. Converters which are acid-lined for the most part are provided with a basic or neutral lining in the neighbourhood of the tuyeres so as to reduce corrosion resulting from contact with acid lining of basic products formed during the " blow." The materials used include magnesite, dolomite, lime, iron oxide, zirconia, chromite, and bauxite. In one form, the bottom B and lower part of the shell are formed of basic material which is separated from the acid lining A by a layer of neutral material N.
Patent GB-1454342-A (GB)
Title: Fixing of heavy metal or heavy metallic compound
IPC: C02F1/52
Filed: 1974-01-29
Abstract: 1454342 Treating wastes or soil containing heavy metals; sequestering agents NIPPON SODA CO Ltd 29 Jan 1974 [30 Jan 1973] 04084/74 Headings C1C C1B and C1H Heavy metals or compounds thereof in a solution or slurry are rendered water-insoluble by admixing therewith from 0À1 to 50% by weight of an aliphatic dithiocarbamate compound, wherein the aliphatic chain may contain a N atom in place of a C atom, containing at least two dithiocarbamic acid groups (=N.CS.SH) or alkali or alkaline earth metal or ammonium salts or esters thereof. The mixture so-obtained may be further treated with a cement or hardenable resin to give a solid mass resistant to leaching. The dithiocarbamate compound may also be incorporated in the cement. Soil containing heavy metals or compounds thereof may also be treated as above to inactivate the metals. Specified metals are Ni, Cr, Zn, Pb, Cu, Cd, Ag, Mn, Bi, V and Hg. In Examples water and mud containing Hg and mercuric compounds (from Nace electrolysis), dry sludge containing Cu and compounds thereof (electroplating waste), Cd-containing sludge and soil containing cadmium were treated.
Patent GB-1236002-A (GB)
Title: Improvements in or relating to a lifting sling
Inventor: BUCK PETER JOHN
IPC: B66C1/18
Filed: 1969-01-24
Abstract: 1,236,002. Slings for lifting pipes. BRITISH ROPES Ltd. 21 Jan., 1970 [24 Jan., 1969], No. 4163/69. Heading B8H. Band slings 13, Fig. 3, are attached to a member 7 which is itself supported by a series of brackets 3 attached to a lifting plate 1. The members 7 are released from the lifting plate by sliding them upwards out of grooves 6 in the brackets 3. When a bar 15 is removed from the top of the member 7 the slings may be disengaged therefrom. Bands 14 locate the slings laterally, and may be arranged diagonally rather than as shown.
Patent GB-1061492-A (GB)
Title: Gear testing apparatus
Inventor: MOORHOUSE STEPHEN
IPC: G01M13/02
Filed: 1965-01-29
Abstract: 1,061,492. Testing gear teeth. DAVID BROWN TRACTORS Ltd. Jan.28, 1966 [Jan. 29, 1965], No.4174/65. Heading G1S. Apparatus for fatigue testing of gear teeth comprises an oscillatable lever 26 and means for rigidly securing a gear 47 under test with one of its tooth flanks in contact with the lever at a point on the flank at or near the tooth tip. The gear 47 under test is clamped between brackets 34 which are adjusted so that a stop 36 engages a tooth flank as near as possible to its root whilst a projection 30 on the lever 26 contacts another tooth as near as possible to the tip thereof (see Fig 2). The lever 26 is mounted on leaf springs 25, the free end of which has a lug 38 and thrust pad 31. A spring balance is connected between the lug 38 and an eyebolt 49, the latter being moved vertically by a wheel 43 to apply via spring 25 a predetermined load to the tooth under test. A sleeve 17, Fig. 3 (not shown) on a shaft 13 is then adjusted until the thrust pad 31 engages a roller bearing 21 at its maximum eccentricity. The spring balance is then removed and replaced by a spring 39. When a motor 11, Fig. 1 (not shown) connected to shaft 13 is started, the eccentrically mounted roller bearing causes the spring to oscillate and thus apply rapidly repeated loads to the tooth until it breaks. When the tooth breaks, the spring 25 is pivoted upwards to contact switch 44 to stop the motor. The number of times the load was applied before breaking is ascertained from a revolution counter 45, Fig. 1 (not shown).
Patent GB-1261554-A (GB)
Title: Prevention of corrosion
IPC: C07F9/38
Filed: 1969-01-24
Abstract: 1,261,554. Diphosphonic acid-metal complexes. MONSANTO CO. 24 Jan., 1969 [26 Jan., 1968], No. 4221/69. Heading C2P. [Also in Division C7] A corrosion-inhibiting complex is formed from (1) an organophosphorus ligand of formula or a mixture thereof wherein X or Y = H, -OH, C 1 -C 4  alkyl or C 2 -C 4  alkenyl and M is H, or alkali metal, and (2) a metal ion from zinc, nickel, cobalt, and manganese. The complex may be made by dissolving in an aqueous medium the ligand as the acid or a salt and the metal ion as a salt, or the two components may be separately dissolved in two different lots of solvent which are then intermixed into the aqueous medium. Alternatively, as in Examples I-III, 1-hydroxy-1,1-ethylidene diphoaphonic acid in 60% aqueous solution is added to solid ZnO, NiCO 3 , or MnCO 3  respectively, 50% NaOH is added to give a pH of 7, 7, or 3 respectively, and on stirring, an aqueous solution of the complex is formed.
Patent GB-1018849-A (GB)
Title: Indexing table assembly
Inventor: HOEGER JOHN GEORGE
IPC: B23Q16/02
Filed: 1963-02-01
Abstract: 1,018,849. Machine tool details. THOMPSON DESIGNS Inc. Feb. 1, 1963, No. 4246/63. Heading B3B. An indexing table assembly comprises a table 50 having a circular track containing balls 64 which engage a similar arrangement of balls 42 on a base 24, the tracks each having a ring 60, 38 connected one to the table and the other to the base for retaining the balls circumferentially. The table is centred on the base by a spigot 52. In each row of balls, one ball is replaced by a post 43 or 65 to prevent circulation of the balls. The table is raised and lowered by eccentrics 112, 114 on a manually-rotated shaft 104. The eccentrics apply a compressive force on the balls in their contacting position to clamp the table. Means 180 prevent lowering of the table when the circles of balls are not correctly positioned in relation to each other.
Patent GB-1510096-A (GB)
Title: Covers for twisting spindles
IPC: D01H7/66
Filed: 1977-02-02
Abstract: 1510096 Covers for twisting spindle EVOLUTION SA 2 Feb 1977 [9 March 1976 6 July 1976] 04291/77 Heading DID A yarn twisting device comprises a vertical spindle carrying a yarn package 17, a can 1 mounted concentrically to rotate with the spindle, a stationary housing 25 enclosing the can and the yarn package, a lower closure member (not shown) for the base of the housing and formed with an aperture for the passage of the spindle and an upper closure member 3 hinged at 26 to the top of the housing and formed with an aperture for the passage of yarn. The upper closure member 3 may be formed with an adjustable F-shaped yarn guide 27. The stationary housing 25 surrounds a stationary cover 2 and may be formed of a sound absorbing material. The cover 2 may be fitted with slots through which dust is removed from the spindle enclosure by suction, (Figs. 5 and 6 not shown). The stationary can 1 may be fitted with a yarn guiding domed lid (19, Fig. 3 not shown).
Patent GB-292198-A (GB)
Title: Adjustable music desk for upright pianos
IPC: G10C3/02
Filed: 1927-02-16
Abstract: 292,198. Gilbert, T. J. Feb. 16, 1927. Drawings to Specification. Pianoforte cases.-The centre panel of the top door of a pianoforte is pivoted on its bottom edge and swings inwards against a cross rail to form the music desk, providing also an aperture for escape of sound.
Patent GB-549228-A (GB)
Title: Improvements in or relating to water boilers
IPC: A47J31/56
Filed: 1942-04-22
Abstract: 549,228. Heating water. FREWIN, S. R. April 2, 1942, No. 4390. [Class 64 (i)] Water from a float chamber 5 flows into an annular space 8 around a flue above a gas burner 3 and then through a pipe 11 depending into a double-walled chamber 12 through which the water flows upwards to a conduit 16 discharging into a boiling box 17 having a draw-off tap 18. The chamber 12 is formed of overlapping conical sections and the top 15 is readily removable to provide access for cleaning. The gas supply valve is operated by the weight of a vessel placed on a platform 20 beneath the draw-off tap.
Patent GB-279304-A (GB)
Title: An electric brush, for use on the hair, scalp, body and toilet generally
IPC: A45D20/48
Filed: 1927-02-16
Abstract: 279,304. Lapthorn, H. W. Feb. 16, 1927. Electric appliances. - An electric hair or body brush is provided with conducting metallic bristles A, Fig. 4, consisting of a complete close coiled spring with an eye B, Fig. 2, at the top turned over for connection to the brush stock and to the electric circuit and an outer end C finished off with a bead of tin to form a smooth contact with the body. Bristles formed of complete spiral springs are to be distinguished from known bristles having spiral springs, part of their length joined to other straight portions. The wire bristles may be used with or without other bristles suitably spaced. The metal bristles are connected by a conducting wire to a common terminal plate and thence by a plug to a supply of current. The circuit is completed by a contact held in the hand.
Patent GB-1533331-A (GB)
Title: Power controllers
IPC: H02M1/40
Filed: 1976-02-04
Abstract: 1533331 DC chopper circuits GOULD Inc 4 Feb 1976 [11 Feb 1975] 04419/76 Heading H2F A chopper circuit for controlling the supply of D.C. power to a load 34 comprises branches 22, 23 each including a thyristor 24, 25, and a transformer 21 for combining the outputs of the branches, the conduction period of the thyristor in each branch being maintained equal so that each branch produces a similar D.C. output. The output of the chopper circuit is coupled by windings 30, 31 of the transformer and an inductance 33 formed by a magnetic shunt within the transformer to a resistive load 35 and an inductive load 36. A resonant commutation circuit including a thyristor 43 and a coil 26-2 induces a voltage in a coil 26-1 to commutate the thyristor 24 and a similar commutation circuit including a thyristor 44 and a coil 28-2 induces a voltage in a coil 28-1 to commutate the thyristor 25. The firing of the thyristors is controlled by pulses derived from a high frequency oscillator so that the duty cycles of the thyristors 24, 25 are equal.
Patent GB-728538-A (GB)
Title: A method for mixing feathers, especially bed-feathers
IPC: B68G3/10
Filed: 1953-02-18
Abstract: A method of mixing feathers, especially bedfeathers, in a drum rotating about a substantially horizontal axis, is characterized in that the drum has no strrring means and is rotated slowly, so that the feathers adhere to the rising wall of the drum and then fall by gravity.  A drum having a diameter of 3-4 metres and rotated at a peripheral speed of 50-60 metres per minute is suitable.  The drum may be of polygonal form, or may be circular with axial ribs on its interior surface.
Patent GB-826740-A (GB)
Title: Porous media
Inventor: JONES JAMES DENNIS
IPC: C04B33/13
Filed: 1956-02-14
Abstract: A body having interconnected capillary pores is manufactured by bonding rice hull ash particles of irregular concavo-convex shape with a bonding agent, which may be vitreous, e.g., a mixture of powdered glass, frit, and glass fibres, or may be a material which becomes vitreous on firing, e.g., ball clay or other aluminosilicate which may be mixed with a flux, e.g., hydrated lime.  The body may be moulded and fired to form a filter or humidifier plate.  In an Example a humidifier plate is formed by mixing rice hull ash with 15% by weight of the ash of ball clay, 7% of hydrated lime, 5% of an agglutinant, e.g., pregelatinized starch, and up to 60% of water. The mixture is moulded under a pressure of about 400 lbs. per square inch and fired at a temperature between 1800 DEG  and 2350 DEG F. Alternatively the hydrated lime may be omitted.
Patent GB-1456001-A (GB)
Title: Colouration process
IPC: D06P3/10
Filed: 1973-01-30
Abstract: 1456001 Azo dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 23 Jan 1974 [30 Jan 1973] 4583/73 Heading C4P [Also in Division D1] Polyamide textile materials are dyed, padded or printed with an aqueous solution of an azo dye prepared by conventional methods of formula in which A is the residue of a diazo component of the benzene or naphthalene series, X is = N-, Y is chlorine or bromine, Q<SP>1</SP> is -O-, -S-, or -NR<SP>4</SP>- in which R<SP>4</SP> is hydrogen or lower (C 1-4 ) alkyl, Q<SP>2</SP> is a direct link, -O-, -CO-, -SO 2 -, -SO 2 NH-, -NHSO 2 -, -CONH-, -NHCO-, -COO-, -OCO-, -OSO 2 -, -S-, or -NR<SP>5</SP>- in which R<SP>5</SP> is hydrogen or a C 1-4  alkyl group, R<SP>1</SP> is an arylene radical, R<SP>2</SP> is an optionally substituted (C 4-7 ) alkyl, cycloalkyl, aralkyl or aryl radical, such that R<SP>1</SP> and R<SP>2</SP> together contain not more than 13 carbon atoms, and R<SP>3</SP> is hydrogen or lower (C 1-4 ) alkyl the -NR<SP>3</SP>- group being attached to the naphthalene nucleus in the 1, 2 or 3-position. Preferably R<SP>2</SP> is an alkyl radical containing 4 to 7 carbon atoms, Q<SP>1</SP> is oxygen and Q<SP>2</SP> is a direct link.
Patent GB-769908-A (GB)
Title: Improvements in or relating to electrical apparatus for sorting signals
IPC: G06F7/02
Filed: 1955-02-16
Abstract: 769,908. Sorting digital data. GOLDBERG, J., COX, B., and HEYWOOD, J. E. Feb. 16, 1955 [March 29, 1954], No. 4628/55. Class 106 (1). Apparatus for sorting, from a number of data sources, signals representative of binary coded numbers each ordered serially, comprises a first means coupled to all said sources to provide one output when the signals provided from said sources are all representative of one binary digit and to provide another output when the signals provided from said sources are not all representative of said one binary digit, means responsive to said another output and to a signal representative of said one binary digit from a data source to cause the signals that would have been applied from the said data source to the first means to be replaced by signals all representative of said one binary digit, and means to store the output from said first means as one binary digit for said one output and as the other binary digit for said another output. As described the apparatus sorts the smallest number from a plurality of numbers applied to the apparatus simultaneously one from each of a, plurality of data sources 10, and stores it in a shifting register 26. The number initially in the register may be sorted with the incoming numbers or it may be ignored by causing a disregard device 36 to issue a series of ones. Sorting is commenced by a signal from a device 34 which sets a start flip-flop 30 " on " and a plurality of flip-flops 32 "off". Clock pulses from a generator 12 which control the input of data can now pass to the shifting register via an " and " gate 28. With the first clock pulse after the start signal the first (highest denominational) digits of the input numbers from the data sources 10 pass via " or " gate 14 to a principle " and " gate 18 together with the first digit of the number in the shifting register, which passes via an " or " gate 14<SP>1</SP> (supposing the disregard source to be inoperative). If all the first digits are " ones ", then " one " is entered via a gate 24 into the register. This continues with the second and third &c. digits for so long as all the digits arising simultaneously at the principle " and " gate are " ones ". As soon as a particular data source (or the register 26) supplies a " zero then the " zero " output from the principal and " gate, which is inverted by an inverter 20, causes " zero " to be entered into the register and also causes all the flip-flops 32 except that associated with the particular data source supplying a " zero " to be set " on ", as a result of which all the further digits from the data sources, except those from the said particular data source, are obliterated at . the " or " gates 14 by " ones " coming from the flip-flops 32. This process continues until all the digits have been entered when a device 38 sets the start flip-flop " off ". The register is then storing the least of the numbers entered. The data sources may be magnetic drums or tapes and by inverting the input signals the largest number can be found.
Patent GB-865671-A (GB)
Title: Improvements relating to fuel induction systems for internal combustion engines
IPC: F02M1/00
Filed: 1957-02-12
Abstract: 865,671. Treating charge. BRADSHAW, N. H. Feb. 10, 1958 [Feb. 12, 1957], No. 4694/57. Classes 7(2) and 7(3). A stationary charge-mixing device 13 comprising a wire coil of flattened oval coil section bodily twisted into helical form has axially thereof an extra-air tube 12 open at its downstream end and connecting at its other end with an adaptor 19 which may lead via a flexible pipe 25 to an aircollecting cone 26 facing forwardly of a vehicle. The device 13 is secured to a plate 14 located at its reduced ends in a gasket 11 inserted between carburetter and induction pipe flanges so that the pipe 12 discharges directly over the manifold hot spot, a brass sleeve 31 being included if the connection 30 to the manifold proper is short. The pipe 12 has inner and outer (not shown) fixing plates 22 where it passes through the gasket. 11. The adaptor 19 may have a wire gauze filter at its outer end when used alone, has a nozzle formation where it reduces to fit the tube 12, may be provided with a hit-and-miss disc valve to control air entry and may be surrounded by an electrical heating coil. The tube 25 may lead to the carburetter air intake downstream of an air cleaner instead of to the cone 26, which has wire gauze filters at its inner and outer ends and may be located behind the engine exhaust pipe or forward of the engine. According to the Provisional Specification, an annulus of wire gauze may be provided upstream of the device 13 to deflect charge thereonto, and there may be a further device 13 in the adaptor 19. Specification 797,437 is referred to.
Patent GB-197734-A (GB)
Title: Hydraulic clutch
IPC: F16D31/02
Filed: 1922-02-17
Abstract: 197,734. Carey, R. F. Feb. 17, 1922. Clutches.-An hydraulic clutch comprises a rotor 3, Fig. 1, corried bv the driving shaft 2 and provided with radial cylinders in which are ball or roller pistons 5 or pistons with ball or voller heads, the. pistons being held by centrifugal force against an elliptical or other track 14, which causes them to make two or more recipre cations per revolution. The track is carried by a flange 13 on the driven shaft 6, the end of which has suction and pressure ports 9, 7, the suction ports 9 communicating directly with the interior of a fixed or rotary casing 1, and the pressure ports 7 with a bore 8 leading through ports 15 to the interior of the casing, the ports 15 being controlled by a slidable sleeve 16. V-section grooves 29 in the sleeve or shaft are provided to increase the delicacy of control. A positive clutch for coupling the shafts comprises teeth 23 on the sleeve 16 adapted to engage teeth on the casing or teeth 24 on a disc 25. spring-pressed against a seating 26. An expansion chamber 35 may be provided. In a modification, the distributing valve comprises ports in the flange 13, preferably pressed against the rotor by pressure acting on the areas 13<a>, Fig. 4, and the control valve consists of rods 33 adapted to enter holes 15. In a further form, the control valves 33 work in tubes 38. Fig. 7. and an angled ring 40 forms a pocket for air. The clutch may be fitted with a relief valve and a cooling tank.