baber/WOPTO huggingface dataset:
Patent GB-1221975-A (GB)
Title: Process for the reactivation of a catalyst
IPC: B01J23/94
Filed: 1968-05-06
Abstract: 1,221,975. Reactivation of metal-contaminated catalyst. GULF RESEARCH & DEVELOPMENT CO. 6 May, 1968 [16 June, 1967], No. 21313/68. Heading B1E. [Also in Division C5] A catalyst the activity of which has become diminished by employment in the treatment of a metal-containing hydrocarbon, in which treatment the metal contained in the hydrocarbon is deposited on the catalyst to produce a metal-contaminated catalyst, is reactivated by a process which comprises contacting the catalyst (without previously subjecting the catalyst to sulphiding or to high temperature oxidation) with hydrogen peroxide in the liquid phase and thereafter separating the catalyst from the hydrogen peroxide and/or the reaction products of the hydrogen peroxide. The hydrogen peroxide may be pure hydrogen peroxide but preferably is an aqueous solution thereof. Prior to contacting with hydrogen peroxide, the catalyst may be contacted with a solvent, for example benzene or naphtha, to remove oil therefrom; after separation from the hydrogen peroxide and/or the reaction products thereof, the catalyst may be washed with an inert medium, for example water. Subsequent to such separation or, if employed, to such washing, the catalyst may be dried and thereafter subjected to an oxidative burn-off. The catalyst either may be a single functional catalyst or may be a dual functional catalyst which may comprise a metalliferous hydrogenating component and a cracking component in the form of a carrier; the metalliferous component may be at least one member selected from the metals of Group VI and Group VIII and the oxides and sulphides thereof and the carrier may comprise a refractory metal oxide. As exemplified, the catalyst comprises the metals nickel, cobalt and molybdenum supported on an alumina carrier and the metal contaminants are nickel and vanadium which may be present on the catalyst in the form of sulphides. Reference is made to Specification 644239 and 936116.
Patent GB-943181-A (GB)
Title: Improved magnetic switching devices
IPC: H03K17/82
Filed: 1962-06-04
Abstract: 943,181. Circuits employing magnetic storage cores. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 4, 1962 [June 22, 1961], No. 21382/62. Heading H3B. [Also in Division H1] A magnetic switching device comprises a body of magnetic material 10 (Fig. 1), such as manganese zinc ferrite having two apertures 12, 14 separated by a leg 18 the width of which is substantially less than twice the distance from either aperture to the peripheral edge of the body and a winding 22 energizable to produce magnetic flux up or down the leg 18, a second winding 24 being so arranged that when energized simultaneously with winding 22 substantially more than half the flux in the leg 18 is caused to encircle one or other of the apertures. The current in winding 22 is sufficient to saturate leg 18, which may be very narrow compared to legs 16 and 20 which then act as a heat sink. The signal current in winding 24 is small compared to the current needed for switching the flux round apertures 12 and 14 and its effect is to produce more flux round 12 than round 14 or vice versa according to the direction of the signal current. A reverse read-out current in winding 22 then produces a net voltage in winding 28 the direction of which depends on which of apertures 12, 14 was surrounded by the larger flux, i.e. on the polarity of the preceding signal current. Instead of a single bi-polar signal winding 24 the apertures may be linked each by a different uni-polar winding (Fig. 3, not shown). A memory matrix composed of elements 10 has a bias winding 22b carrying a constant current sufficient to saturate all the centre legs which it links. The unequal flux distribution round the pairs of apertures is produced by the combination of the effect of current in 22b with the effect of information signal currents in windings 50, 52, 54. The information is read out by activating read drivers 46 to switch the flux in the centre legs of the associated elements thus producing net voltages in windings 60, 62, 64 which are amplified at 66 and activate the 1 or 0 output lines shown according to the information stored. For write-in the appropriate drivers 46 are switched-off and the energized bias windings 22b then switch the flux in the centre legs of the selected elements the distribution of this flux between the outer legs being determined by simultaneous information currents in 50, 52 and 54. The information detected by the sense amplifiers may be applied to information drivers 56 for re-write purposes. An alternative matrix using the same pair of coils 70, 72 (Fig. 6, not shown) for biasing, writing and reading is described. The matrices may be three dimensional.
Patent GB-432663-A (GB)
Title: Improvements in means for operating the tables of machine tools such as metal milling and like machines
IPC: B23C9/00
Filed: 1934-07-21
Abstract: 432,663. Milling - machines &c. GAMBIN ET CIE, and MASSOT, P., 128, Rue du Point du Jour, Billancourt, Seine, France. July 21, 1934, No. 21410. [Class 83 (iii)] In a device for controlling the speed of the table of a machine tool such as a milling machine, the table is provided with two spaced parallel series of operating dogs, the dogs of one series causing the engagement of the high table speed and of the other series causing low speed to be engaged. The side of the saddle 10 on which the table 1 is mounted carries the gear box 23 driven from a constant speed shaft 46. This shaft is geared to a pair of wheels 66, 57 which are driven at different speeds and connect with a clutch 69 operated from a spindle 44 to impart a two-speed drive to a spindle 58. This spindle is connected by gearing 71 to loose bevel gears 72, 75 which rotate in opposite directions on a shaft 73 geared to the table screw 79 and are selectively engaged by a clutch 78 operated from a spindle 18. The spindles 44, 18 controlling the change speed and reversing clutches respectively are actuated by the dogs on the table 1. The spindle 44 is connected to a pivoted lever 38 carrying a roller 39 and the spindle 18 is connected to a lever arm 12, Fig. 1, carrying a roller 19 operated by abutment stops 5, 6 to reverse the table movement. The change speed operating dogs which are arranged in sets in parallel grooves 3, 4, consist of pivoted catches such as 24 held against a stop 32 by a spring. As the table moves to the right, Fig. 1, on its return movement, the roller 39 passes the dogs 34, 35, 24, 25 but is raised by the oppositely arranged dog 36 which operates the spindle 44 to engage low speed. As the table moves to the left, the dogs 25, 24 successively depress the roller 39 to engage high speed while the dogs 35, 34 raise the roller to engage low speed. Finally a fixed projection 45 engages high speed for the return travel. The operating dogs may be spaced as required according to the nature of the work. Load-and-fire mechanism is provided between the spindles 18, 44 and their respective clutches to ensure that quick clutch operation is obtained. At the end of a cycle of operations, the reversing clutch is arrested in a neutral position by means of a pivoted catch so that the table is stopped.
Patent GB-723705-A (GB)
Title: Improvements in or relating to parachute packs
IPC: B64D17/52
Filed: 1952-08-26
Abstract: 723,705. Sliding-clasp fasteners. SWITLIK PARACHUTE CO., Inc. Aug. 26, 1952 [Feb. 19, 1952]. No. 21413/52 Class 44. [Also in Group XXXIII] A retaining clip for a zip fastener consists of a box-lil member 40 having an open end and two slots cut in a pair of opposite sides as shown in Fig. ' In use, the usual slide is moved up the fastener to engage the scoop 34 and 36, the while external pressure keeps the fastener from being released, the  slider is pulled off, and the lip 40 slid on, the slots in its sides receiving the canvas 30, 32 of the fastener. Pins 56 and 60 may constitute the end of the fastener.
Patent GB-221813-A (GB)
Title: An improved centrifuging apparatus driven by alternating electric current
IPC: H02K7/16
Filed: 1924-09-10
Abstract: 221,813. Sindl, O. Sept. 10, 1923, [Convention date]. Void ,[Published under Sect. 91 of the Act]. Driving; balancing. - The drum of a centrifugal separator is driven directly by means of singlephase or polyphase current; the drum T, Fig. 1, and the rotor R of the motor are integrally connected and are capable of adjustment in relation to the stator S. The shaft N is supported in a selfaligning bearing L mounted in a housing G to which is attached the stator S. The bearing L may be of the type known under the registered trademark Skefco ball bearing. Springs F in the housing G tend to keep the shaft in the central position. In a modification, the drum T, Fig. 2, and the rotor Rare connected by a short shaft N, the centre of gravity being situated below the supporting bearing L.
Patent GB-493093-A (GB)
Title: Improvements in extrusion machines for moulding pellets from plastic substances
IPC: B30B11/22
Filed: 1937-11-23
Abstract: 493,093. Extruding meal &c. pellets. SIZER, A. W. Nov. 23, 1937, No. 21453. [Class 87 (ii)] In an extrusion machine for moulding pellets wherein material is forced through perforations 2 in a die-plate or cylinder 1 by one or more rollers or cylinders 4 on one side of the die, the extruded pellets being severed on the opposite side by a number of knives, at least one knife 5 is disposed within an area on each die over which material is extruded at one moment, and one knife 7 only is arranged outside this area. The die 1 may be an annular plate rotating about a vertical axis, the cutters 5 being stationary and the rollers 4 may be rotated positively or by frictional contact from the plate about fixed horizontal axes. Alternatively the die 1 may be stationary, the cutters and rollers moving round. In another form material is compressed between a pair of rotating perforated cylinders, stationary cutters 29 being provided within the cylinders. Intermeshing teeth are provided on the cylinders, the perforations being disposed at the roots of the teeth. One cutter 28 is disposed outside the area over which material is being extruded. The cutters 29 may be mounted on spindles 30 clamped adjustably in guide slots 31 whereby their spacing can be altered. The cutters 28, 29 may be so disposed that a single shoot serves for reception of the pellets therefrom. Specification 470,585 is referred to.
Patent GB-230728-A (GB)
Title: Improvements in and relating to the manufacture of paper, board and the like
IPC: D21F5/02
Filed: 1924-09-11
Abstract: 230,728. Marx, R. Sept. 11, 1924. Drying. - In order to avoid condensation of moisture on the paper, and consequent loss of heat, air is caused to impinge on the sheet and on the drying felts at a temperature slightly higher than the temperature of the sheet. A blower B supplies air to a heater C and through a duct D to branch pipes F which deliver heated air to the draws. To accommodate the different temperatures of the paper web at the different stages of drying, the blower also delivers cold air through ducts E, G and, by dampers at F, G, H. J, the proportion of hot and cold air is adjusted to give the desired temperature.
Patent GB-151152-A (GB)
Title: Improvements in carburetors
IPC: C10J1/12
Filed: 1919-09-02
Abstract: 151,152. Jackson, W. J. Mellersh-, (Holley, G. M.). Sept. 2, 1919. Spray carburettors.-In a carburettor of the kind described in Specification 128,525, two float chambers K, K<1> are provided for heavy and light fuel respectively. The rotational adjustment of the choke tube B admits successively less heavy fuel through the different ports C', C<2>, C<1>, C. Light fuel at starting is admitted by a port in a different plane.
Patent GB-220176-A (GB)
Title: Improvements in crushers and pulverizers
IPC: B02C4/08
Filed: 1923-08-27
Abstract: 220,176. Coward, W. H. Aug. 27, 1923. Roller mills.-A machine for crushing or pulverizing stone, ore, &c. comprises a parallel pair of intermeshing fluted or longitudinally-grooved rollers a, b one of which is mounted in fixed bearings e whilst the other is mounted in bearings f slidable towards and away from the first under the influence of a spring q, and a pair of scraper rollers u rotatably mounted parallel with and adapted to engage one with each of the grooved rollers a, b. Each of the rollers a, b may consist of a cylindrical drum i on which are keyed a number of thin toothed rings h of hard steel &c. clamped together by means of longitudinal bolts k and end-plates m. Preferably the end-plates m of one of the rollers are equal in diameter to the maximum diameter of the roller so as to overlap the intermeshing teeth. The teeth or flutes of the rollers are of semicircular section, and the depth to which they mesh is adjusted by means of screw-threaded rods n extending from the bearings f to the ends of the spring-pressed carrier plate p. Each roller u consists of a series of scrapers v extending between end-plates w and adapted to make rubbing contact with the teeth of the rollers a, b. The scraper rollers are rotatably connected together and with the shafts c, d of the rollers a, b by spur or like gearing. The shafts c, d may be connected by gearing r.
Patent GB-1268463-A (GB)
Title: Improved process for making peptides
Inventor: TILAK M A
IPC: C07K5/093
Filed: 1970-05-05
Abstract: 1,268,463. Process for preparing peptides. ELI LILLY & CO. 5 May, 1970 [5 May, 1969], No. 21649/70. Heading C2C. Peptides are prepared by (a) admixing at least a 1.5 molar equivalent of an anhydride or mixed anhydride of an N-protected amino acid with one molar equivalent of a reactive basic C-protected peptide or amino acid in a non-aqueous, watermiscible solvent at between ambient room temperature and the freezing point of the reaction mixture for a time sufficient to allow complete reaction of the basic peptide; (b) hydrolysing the excess acid anhydride by contacting the reaction mixture with an aqueous buffer solution and (c) separating the peptide therefrom. Peptides prepared in the examples are CBO- ala - glu(N<SP>6</SP> - xanthyl) - OMe; CBO - arg(NO 2 )- ala - glu(N<SP>5</SP> - xanthyl) - OMe; CBO - leu - asp- (otBu) - OEt; CBO - tyr(tBu) - leu - asp(OtBu)- OEt; BOC - lys(CBO) - tyr(tBu) - leu - asp- (OtBu) - OEt; CBO - ser(tBu) - lys(BOC) - tyr- (tBu) - leu - asp(OtBu) - OEt; H-phe - phe- OMe; CBO - glu - asp(OtBu) 2 ; CBO - glu - asp- (OtBu) - OEt; CBO - ala - glu - asp(OtBu) 2 ; CBO - ala - glu - asp(OtBu)OEt; CBO - arg- (NO 2 ) - ala - glu - asp(OtBu) 2 ; CBO - arg(NO 2 )- ala - glu - asp(OtBu) - OEt; CBO - arg(CBO) 2 - ala - glu - asp(OtBu) 2 ; CBO - arg(CBO) 2  - arg- (acetyl) - ala - glu - asp(OtBu) 2 ; CBO - ser(tBu)- arg(acetyl) - arg(acetyl) - ala - glu - asp(OtBu) 2 ;  CBO - glu - gly - OEt; CBO - ser(tBu) - glu - gly- OEt; CBO - try - leu - OMe; CBO - glu - tryleu - OMe; CBO - val - glu - try - leu - OMe; CBO - phe - val - glu - try - leu - OMe; BOC- phe - val - glu - try - leu - OMe; CBO - ser(tBu)- asp(OtBn) - OEt; CBO - thr(tBu) - ser(tBu)- asp(OtBu) - OEt; CBO - phe - thr(tBu) - ser- (tBu) - asp(OtBu) - OEt; and CBO - thr(tBu)- phe - thr(tBu) - ser(tBu) - asp(OtBu) - OEt.
Patent GB-203002-A (GB)
Title: A centrifugal drum suitable for artificial silk spinning machines
IPC: D01D7/02
Filed: 1923-08-27
Abstract: 203,002. Naamlooze Vennootschap Hollandsche Kunstzijde Industrie, and Kitschmann, G. A. Aug. 25, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Spindle apparatus.-A cup yarn-holder for an artificial silk spinning-machine is formed of an ebonite shell 7, Fig. 2, provided with perforations 1, the shell 7 'being secured to a supporting- member comprising a portion 3, forming the bottom of the cup, and a disc 6 attached to a hub 4. When the upper portion of the shell 7 is worn, it may be inverted on the supporting-member. The disc acts as a gyroscope-disc or a fly-wheel. In a modification, a disc 14, Fig. 3, having recesses 15 is used, and the shell 7 is expanded to the shape shown in dotted lines 18, 19.
Patent GB-137103-A (GB)
Title: Improvements in and appertaining to tyres for the wheels of road vehicles
IPC: B60C19/00
Filed: 1918-12-30
Abstract: 137,103. Taylor, E. H. Dec. 30, 1918. Tyre attachments to rims. -Tyres of circular crosssection fitting in a correspondingly-shaped groove in the wheel felloe are held in place by side plates having turned-over portions engaging the tyre, while the felloe is formed in detachable sections so that one section and its side plate may be removed to detach the tyre. The cover 6 of the circular pneumatic tyre is held by side plates 3 in a groove in the felloe 4, which has a detachable portion 4a. Bolts 5, 5<a> secure the side plates and portions of the felloe together. A cushion tyre, or a single-tube pneumatic tyre, of circular section, may be secured similarly by side plates having turned-over edges engaging grooves in the tyre. Projections may be formed on the inner surface of the tyre to fit in corresponding indentations in the rim to prevent creeping.
Patent GB-347974-A (GB)
IPC: C05B1/06
Filed: 1930-07-18
Abstract: In the direct production of a solid fertilizer by treating normal, double, or triple superphosphate with ammonia, the ammonia is added in two or more stages, preferably with cooling between successive additions of ammonia.  Gaseous, aqueous, or liquid anhydrous ammonia may be used, for instance aqueous ammonia may be used for one stage and liquid ammonia for a succeeding stage. Batch working may be used, or the process be effected continuously, for instance by passing the superphosphate through a rotating conveyer parts of which are adapted to serve as cooling zones between successive additions of ammonia. The product is characterized by a minimum amount of "reverted" phosphate.ALSO:In the direct production of a solid fertilizer by treating normal, double, or triple superphosphate with ammonia, the ammonia is added in two or more stages, preferably with cooling between successive additions of ammonia.  Gaseous, aqueous, or anhydrous liquid ammonia may be used, for instance aqueous ammonia may be used for one stage and liquid ammonia for a succeeding stage. Batch working may be used, or the process be effected continuously, for instance by passing the superphosphate through a rotating conveyer parts of which are adapted to act as cooling zones between successive additions of ammonia.  The product is characterized by a minimum amount of "reverted" phosphate.
Patent GB-1044035-A (GB)
Title: High vacuum pump apparatus
IPC: H01J41/12
Filed: 1963-05-30
Abstract: 1,044,035. Getter-ion pumps. NIPPON ELECTRIC CO. Ltd. May 30, 1963 [June 18, 1962], No. 21757/63. Heading H1D. [Also in Division H5] A getter pump has a heating element disposed within the pump so as to heat the enclosing walls of the pump to drive off occluded gases by convection whilst the pump still contains gas at an appreciable pressure, thereby heating the whole interior surface of the enclosing walls of the getter pump and enclosure to the effect that unwanted water and gas molecules absorbed in the walls can be expelled. At least parts of the walls are protected with heat insulating material to reduce heat losses from the interior of the pump and enclosure.
Patent GB-338576-A (GB)
Title: Improvements in destructive hydrogenation
IPC: C10G1/00
Filed: 1929-07-16
Abstract: 338,576. Harrison, C. F. R., Kamm, E. D., and Imperial Chemical Industries, Ltd. July 16, 1929. Hydrogenation, destructive.-In a two-stage process for obtaining petrol from heavy oil or coal by destructive hydrogenation, middle oil is isolated from the products of the first stage by fractional condensation, and is subsequently treated with hydrogen in the vapour phase in the presence of a catalvst. The first stage may be carried out as in Specification 336,610 with a massive catalyst, e.g. tin plate as described in Specification 335,215. As illustrated, a paste of coal and heavy oil with about 2 per cent iron oxide (Fe2O3,) is passed through a preheater into a vertical tower 1 and treated for 2 hours with hydrogen at 420‹ C.-450‹ C. and 250 atmospheres pressure. The total products, solid, liquid and gaseous, are taken off at 4, heavy oil is, condensed in a catch-pot 5 kept at 350‹ C., and is returned through filter 6 to the coal-paste mixer 2<a>. The vapours passing through the catch-pot 5, comprising 25 per cent petrol and 35 per cent middle oil, reckoned on the coal, are further separated from heavy oil in a fractionating column 20, and the middle oil is condensed in a catch-pot 7 kept at 250‹ C., or 200-220‹ C. The middle oil is passed by a pump 9 through a heater 11 with hydrogen from branch 10, and thence through a converter 12 packed with tin-plated iron, at 480‹ C. and 250 atmospheres pressure or at a lower pressure, e.g. 100 atmospheres, the contact time being 3 minutes. Other suitable catalysts are iron oxide, gels of oxides of irreducible metals such as tin, nickel, cobalt, iron, or molybdenum, and carbon black impregnated with tin compounds. The products pass to the catch-pot 7, and petrol from both hydrogenation stages with some ammonia and gaseous hydrocarbons and hydrogen is led away at 14 to cooler 15 and catchpot 16. Petrol is obtained equal to half the weight of the coal.
Patent GB-802235-A (GB)
Title: Improvements in or relating to scraper conveyors
IPC: B65G19/28
Filed: 1957-07-11
Abstract: 802,235. Scraper conveyers. BRAUN, W., [trading as HALBACH & BRAUN]. July 11, 1957 [July 13, 1956], No. 21975/57. Addition to 790,189. Class 78 (1). The scraper conveyer of the Parent Specification is modified in that the guide rails 4 are of V-section and are detachably secured to the trough side walls by screws 3, the scrapers 5 having correspondingly shaped notches 6 in their ends to engage the guide rails with clearance, so that material deposited on the guide rails can escape and does not pile up in front of the scrapers.
Patent GB-423598-A (GB)
Title: Improvements in or relating to automatic train control systems
IPC: B61L3/12
Filed: 1933-08-04
Abstract: 423,598. Actuating signals on trains and stopping trains. HUDD, A. E., c/o London Midland and Scottish Railway Co., Bow, London. Aug. 4, 1933, No. 21985. [Class 105] A warning signal and a braking on a train are given when a track magnet energizes magnetic collector plates on the locomotive to remove an armature from a detent lever holding up a spring-loaded plunger which maintains a brake control valve closed ; the opening movement of the valve automatically resets the spring- loaded plunger and detent. Soft iron magnetic collector plates are provided with polepieces 6 adapted to attract a resiliently mounted armature 71 an arm 14 of which then allows the arm 7 of a detent to move under the action of a spring-loaded plunger 11 having a wedge end engaging a roller on an arm 8 of the detent. The plunger 11 is mounted in a hollow stem 12 carried by a diaphragm 15 exposed to the vacuum system. The stem is formed on the head with a liftvalve ring 45 and has a port 44 in its cylindrical surface to co-operate in the manner of a sleeve valve with a fixed spigot member 42. When the pressure of the spring 13 is reduced by the release of the plunger 11 the valve 45 opens to admit atmosphere to the top of the diaphragm whereupon the stem 12 is forced fully down so that its extension 25 engages a lug 9 on the detent 7, 8 and resets the detent and the plunger 11. The sleeve valve port 44 is now open and admits atmosphere through the whistle 39, pipe 38, spigot member 42, and port 44 to the vacuum piping 41. The driver may cancel the signal and braking by operating a hand valve 47 which admits atmosphere to the underside of the diaphragm 15 which is thus balanced to allow the spring 13, now under full stress, to close the stem valves 44, 45. The driver must restore the hand valve 47 as otherwise the vacuum piping continues to be open to atmosphere at a port 48 of such valve. An apparatus for use with compressed air is also described.