baber/WOPTO huggingface dataset:
Patent GB-1491934-A (GB)
Title: Preparation of alpha-olefin copolymers with vanadium phosphoro-dithioate catalyst
IPC: C08F4/60
Filed: 1975-03-19
Abstract: 1491934 Copolymerizing olefins UNIROYAL Inc 19 March 1975 [25 March 1974] 11433/75 Heading C3P Ethylene is copolymerized with α-olefins and optionally non-conjugated dienes, in an inert organic solvent in the presence of a catalyst comprising (1) a vanadium phosphorodithioate of formula or where R and R<SP>1</SP> are C 1-10  alkyl and (2) an alkyl aluminium halide, the atomic ratio of aluminium to vanadium being at least 4:1. Liquid elastomers may be obtained by incorporating a catalyst modifier containing a zinc compound, e.g. zinc stearate. Examples describe the preparation of ethylene/propylene, ethylene/propylene/ethylidene norbornene and ethylene/ propylene/dicyclopentadiene copolymers using catalysts comprising vanadium tris(0,0-di-namylphosphorodithioate) or vanadyl bis(0,0- di - n - amylphosphorodithioate), and liquid ethylene/propylene and ethylene/propylene/ ethylidene norbornene elastomers using similar catalysts modified with zinc stearate.
Patent GB-183251-A (GB)
Title: Improvements in cyclometers
IPC: G01C22/00
Filed: 1921-04-20
Abstract: 183,251. Hyslop & Co., Ltd., A., and Mathys, G. A. April 20, 1921. Counters with reducing-gear; associated counters, trip and total and like.-A counter or distance indicator for vehicles &c. of the type having concentric scales, and pointers driven continuously through epicyclic reducing-gear, comprises a pair of crown-wheels a, b, having slightly different numbers of teeth, driven in opposite directions either directly or through a similar pair of wheels c, d from a wheel v, and a planet pinion l carried by an arm m on a sleeve e frictionally engaging and driving the primary pointer spindle f. An arm p fast on the sleeve e carries a loose planet pinion n gearing with wheels r, q differing slightly in the number of teeth, the wheel r being fixed to the dial plate k and the wheel q fixed to a sleeve s carrying the secondary pointer t. The wheel q is forced by a spring u against the face of the wheel r to set up sufficient friction to prevent vibration of the pointens. The primary pointer spindle f is slotted and slightly expanded in the sleeve e, and may be turned by a knob i to reset the pointer to zero. The wheel v is driven from a wheel 3 on its boss, engaging a wheel 2 on a short shaft y to which a flexible shaft 5 is coupled by a screwed union 6. In a modification, Fig. 4, the flexible shaft is coupled to the shaft 20 of the wheel v, and the spindle f may be turned for re-setting by means of a knob i on a shaft 33 geared to the spindle. The flexible shaft may be driven by a star-wheel and roller on one of the road wheels, and for a motor cycle the counter may be clamped to the handle-bars. In the case of a motor-car the counter may be secured to the dash-board by a flange 37, Fig. 4. According to the Provisional Specification the secondary pointer may be driven by a single toothed wheel on the sleeve of the primary pointer engaging a star-wheel on a pinion meshing with a wheel loose on the primary spindle and carrying the secondary pointer.
Patent GB-1058315-A (GB)
Title: Substantially isotropic graphitized bodies used in nuclear reactors
IPC: G21C5/12
Filed: 1964-03-08
Abstract: In the production of isotropic graphite from petroleum and/or coal tar coke by standard graphitization techniques, the raw coke is rendered highly disordered and unoriented prior to graphitization. The disorder and unorientation referred to may be produced by (i) thoroughly mixing 60 to 90% by weight of the raw uncalcined coke with 40 to 80% by weight of a plasticising agent, e.g. coal-tar oils, coal-tar pitches, heavy lignite tar oils and pitches, phenantherene, diphenyl and anthracene; (ii) the raw coke may be heated and compressed in a mould at a temperature of 250 DEG  to 450 DEG  C. at a pressure of at least 1000 p.s.i.; (iii) the coke may be mixed with a plasticiser as above, moulded, baked, and the baked body pulverized or any combination of methods (i), (ii) and (iii).  The material produced by these methods is then mixed with a pitch binder, baked and graphitized according to standard procedures, the binder being present in an amount of 20 to 40% by weight.  The graphite produced is said to be substantially isotropic in its properties, and has a coefficient of thermal expansion in any direction of at least 30 x 10-7 inch/inch/ DEG  C. measured over a temperature range of 20 DEG to 100 DEG  C., the numerical values of said coefficient of thermal expansion in any direction not differing by more than 25%. Preferred values are 40 x 10-7 inch/inch/ DEG  C. and 20%. This isotropic graphite is used as a moderator, canning material, and reflector in a nuclear reactor, and is particularly useful in those reactors where it may be exposed to a temperature in excess of 500 DEG  C.
Patent GB-835791-A (GB)
Title: Alkaloids and process for their manufacture
IPC: C07D459/00
Filed: 1957-04-09
Abstract: The invention comprises reserpine thiocyanate and a process for the separation of alkaloids by treating material containing reserpine and substantially nothing but further weakly basic alkaloids, particularly deserpidine, with thiocyanic acid (or a salt thereof and an acid) whereby reserpine thiocyanate is preferentially formed. Examples detail the preparation of reserpine thiocyanate and the recovery of reserpine and deserpidine from Rauwolfia and Alstonia species.  Specifications 734,108 and 772,122 are referred to.
Patent GB-123772-A (GB)
Title: Improved Means for Feeding Cartridges to the Barrels of Machine Guns and for Extracting the Cases therefrom.
Inventor: LUCAS OWEN DAVID
IPC: F41A9/38
Filed: 1915-09-21
Abstract: 123,772. Lucas, O. D. Sept. 21, 1915. Machine guns.-Relates to cartridge-feed and cartridge-extracting mechanism for machine guns of the type having a to-and-fro sliding bolt and an extractor plate which is capable of rotation at the front of the bolt, and withdraws the cartridges one by one rearwards from the magazine., the plate rotating to bring the cartridges carried by it into line with the chamber. The invention consists in providing an extractor-plate which is rotated through 120 degrees when the bolt is in its rear position, the forward movement of the bolt causing spring clips on the plate to engage in turn the cartridges in the magazine. A device is provided which operates during run-out to start the extraction of the cartridge. Fig. 1 shows the invention applied to a hand-operated machine gun as described in Specification 13446/15, in which the breech-frame 3 recoils against the action of a spring in a fixed frame 1 and carries the operating-crank 6 which, through a two-to-one gear, rotates a crank-shaft 9, the crank 10 of which is connected by a slotted link 12 to a lever 11 actuating the sliding breech bolt 14. The bolt is fixed to a carrier 34 for an extractor-plate 32, which is feathered to a shaft 33 forming a guide for the carrier 34. The rearward movement of the bolt causes, through spring-controlled cartridge-engaging clips 46 on the extractor-plate arranged at 120 degrees to one another, as shown in Fig. 5, the withdrawal of a fresh cartridge from the magazine 49 and the extraction of the used cartridge case, the shaft 33 together with the extractor plate being then rotated by the oneway clutch 35 through 120 degrees by the sector g,ear 37, Fig. 4, which receives its motion from a pin 42 on the crank-shaft 9 through a slotted link 41. When the bolt moves forward, the fresh cartridge is inserted in the breech, the used cartridge is ejected by an incline 66, and a new cartridge in the magazine is engaged by a pair of the clips 46. Fig. 7 shows a spring-controlled arm 75 which is pivoted to the fixed frame 1 of the gun so that, during the recoil of the frame 3, it engages behind the carrier 34. When the frame 3 returns after recoil, the carrier 34 is arrested and a force is exerted to start the extraction of the cartridge, the arm 75 being subsequently raised by a projection 76 on the frame 3,
Patent GB-1159225-A (GB)
Title: Process for the manufacture of Palladium (II) Halides from Metallic Palladium
IPC: C01G55/00
Filed: 1967-03-13
Abstract: 1,159,225. Palladium (II) halides. FARBWERKE HOECHST A.G. 13 March, 1967 [11 March, 1966], No. 11667/67. Heading C1A. Palladium (II) halides, PdX 2  or [PdX 4 ]<SP>2</SP>- where X is a halogen atom, are prepared by treating metallic Pd with oxygen or a free oxygen-containing gas in the presence of a carboxylic acid and either a halide of a metal of main Group I, II or III, or an ammonium halide, between 10 and 150 C. The oxygen may be already contained in the Pd, which may be on an inert carrier, and the carboxylic acid may be used either diluted with water or, preferably, concentrated. The halide is preferably a chloride or bromide.
Patent GB-475254-A (GB)
Title: A process for extracting metals from oxidic ores and the like
IPC: C22B1/00
Filed: 1937-04-23
Abstract: Metals having a lower heat of combustion than iron, such as copper, nickel, and cobalt are <PICT:0475254/III/1> extracted from oxidic ores, including roasted sulphides and silicates, containing also iron or metals having a higher heat of combustion than iron by reducing the ore at temperatures above 400 DEG  C. for at least 15 mins. with a reducing gas to which steam is added whereby only the metals having a lower heat of combustion than iron are reduced to the metallic state, then maintaining the so reduced ore in an atmosphere of reducing gas containing carbon monoxide and/or hydrocarbons for at least 15 mins. at a temperature below 400 DEG  C., completing cooling of the ore in a non-oxidizing or reducing atmosphere, and, finally bringing it into contact with an extraction electrolyte in the presence of air.  In one example, an ore containing 1,4 per cent nickel and 45 per cent Fe2O3 is reduced at 700 DEG  C. with say illuminating gas and steam in the proportion of 60 to 74 by volume, maintained at say 300 DEG  C. in the presence of the gas for the required time, further cooled, and the nickel extracted with an ammoniacal or acid solvent, which may be 0,5 per cent H2SO4.  In a second example, a sulphide ore containing 5,52 per cent copper and 25,46 per cent iron is roasted, reduced at 600 DEG  C. with reducing gas and steam in the proportion of 2 to 5 by volume, cooled first to 300 DEG  C. and then to room temperature, and the copper extracted with 0,2 N. sulphuric acid.  In a third example, an ore containing 86 per cent silica, 4 per cent copper as oxide and sulphide, and 3,86 per cent Fe2O3 is reduced at 650 DEG  C. with illuminating gas and steam in the proportion of 70 to 188 by volume, cooled first to 300 DEG  C. and then to room temperature, and leached with ammoniacal ammonium carbonate to extract copper.  Contrasting results are given when reduction is effected in the absence of steam.  The process may be carried out in a rotary furnace 1, ore being supplied at 3, steam through a pipe 5, and reducing gas through a pipe 6.  The outlet 10 for the reduced ore consists of a pipe wound \ba3/4\be of a turn round the furnace, so that the ore acts as an air lock.  In the zone between 7 and 8 which is heated by burners 14 enclosed in firebrick stoves 15 closed by removable heat insulator plates 16 heating and reduction is effected in the presence of reducing gas and steam, and in the zone between 8 and 9 provided with heat insulation 13 cooling takes place in the presence of reducing gas only.  Air may be admitted at 11 to provide internal heating, and heat insulation 17 is provided to bear on the middle roller 2.
Patent GB-561551-A (GB)
Title: Improvements in or relating to belt conveyors
IPC: B65G15/60
Filed: 1942-08-21
Abstract: 561,551. Belt conveyers. SUTCLIFFE, Ltd., R., and SHEPPARD, J. Aug. 21, 1942, No. 11772. [Class 78 (i)] A coal - mining belt conveyer is adapted for ready extension and contraction without undue stoppage by traversing part of its return rum along a line parallel to, or alternatively at right angles to, the load-carrying length. The working run 1 extends from a loader 2 at the cutting face 6 to a cross conveyer 3 running up -a roadway 4. At an intermediate point 5 in the idle run of the conveyer inclined rollers are introduced to permit of an auxiliary idle extension 1<x> leading to an end drum 8. By moving the drum 8, which may be mounted on wheels, toward or away from the main run 1, the length of the latter can be increased or lessened. By imparting a double set of twists to the belt, the auxiliary run can be arranged parallel to the main run. In a modification, a series of rollers may be mounted in an expanding frame arranged behind the driving head to provide a reservoir of belt rim.
Patent GB-1365275-A (GB)
Title: Drive systems for open end spinning machines
IPC: D01H1/241
Filed: 1973-03-12
Abstract: 1365275 Drive for open end spinning machine F STAHLECKER and H STAHLECKER 12 March 1973 [14 March 1972] 11828/73 Heading DID A belt drive for an open end spinning rotor which has a shaft 3 supported in the nip of two rollers 4, 5 comprises pressure rollers 7 pressing the belt 6 against the rotor shaft 3, with the return run 17 of the belt being guided against the pressure roller. Guide pins 18 may be provided to ensure that the belt does not jump off the pressure roller 7. A shaft brake 14 may be arranged so that it may bear on the shaft 3 and when a greater braking force is applied via band 15, the pressure roller is lifted off the rotor shaft 3.
Patent GB-591142-A (GB)
Title: Improvements in and relating to the manufacture of metal articles
IPC: B22D27/02
Filed: 1944-06-22
Abstract: In a method of making a metal article, metal in the form of powder, small blocks or strips is packed into a mould formed of a substance which will not mix, coalesce or harmfully affect the charge and then heated in a non-oxidising atmosphere by high frequency induction. The charge may be heated to sintering temperature and then compressed or it may be melted in the mould. For steel, the sintering temperature would be between 860 DEG C. and 960 DEG C. and the preusure from 1 to 1 1/2 tons per square centimetre.  The mould may be of a refractory non-metallic material or of a metal having a melting point considerably higher than that of the charge and is preferably lined with sillimanite or zirconia.  A layer of diamonds or other abrasive material may be incorporated in the charge within the mould.  Reference has been directed by the Comptroller to Specifications 341,649, [Group XXII], 452,411 and 452,503.
Patent GB-733516-A (GB)
Title: Improvements in or relating to medical appliances
IPC: A61M31/00
Filed: 1953-04-29
Abstract: 733,516. Surgical powder applicators. BACHMANN, W. April 29, 1953 [May 9, 1952], No. 11888/53. Class 81 (2). A powder introducer for body cavities comprises a tubular member in which is a sliding piston with means for causing resistance to movement of the piston. A body 1, of synthetic resin, shaped conveniently for gripping, has a recess 2 at one end forming an open cylinder in which slides a piston 3 connected to a plunger rod 4. The periphery of the piston is coated with rubber 7, or is provided with a rubber ring, so as to provide a moderate resistance to movement, the purpose of which is to introduce some degree of compression to the powder when the appliance is filled by pressing the open end into a quantity of powder which, as it enters, gradually forces the plunger back from a position adjacent the outer end of the cylinder 2.
Patent GB-1430458-A (GB)
Title: Power tools
IPC: B25B21/00
Filed: 1973-03-13
Abstract: 1430458 Power tools; drilling GKN SCREWS  & FASTENERS Ltd 13 March 1974 [13 March 1973] 11921/73 Headings B3N and B3C A speed reduction device for a power tool has an input shaft 10 which is drivingly connectable to the output shaft of the power tool, input shaft being connected to a working bit 13 by way of a clutch 14, 15 which when engaged transmits the drive direct to the working bit at the same speed of rotation as the tool output shaft and input shaft 10, the clutch being biased into an engaged condition by a spring 11 located within the bit carrier 12. The clutch part 14, is fixed to the shaft 10 and the other part 15 is fixed for rotation with the planet cage 16 of an epicyclic gear means the sun gear 18 of which is also fixed to the shaft 10. The planet gear pinions 21 engage with the sun gear 18 and the outer ring gear 19 which in turn is connected to the device housing 20. This housing is rotatable relative to the shaft 10 and axially displaceable with respect thereto. In operation, the biasing action of the spring 11 maintains the clutch 14/15 engaged under all normal load conditions upon the working bit and the rotary drive is direct from the power source (not shown) so that the shaft 10 and the parts of the device rotate as a single unit. When a resistance is encountered by the working bit and an excess axial pressure is applied to the shaft 10, the spring is compressed the clutch 14/15 is disengaged and the housing is displaced to engage a further clutch 26/27 whereby the drive from the shaft 10 is transmitted at a lower speed but higher torque by way of the epicyclic gearing 19, 21 and 18.
Patent GB-803445-A (GB)
Title: Improvements in or relating to mold washes
Inventor: SMITH DAN LEE
IPC: B22C3/00
Filed: 1955-04-25
Abstract: A mould wash of 60 DEG  to 80 DEG  B<\>ae specific gravity is prepared by mixing with water, to produce a suspension, a finely-divided refractory and the hydrous oxide or hydroxide or a salt of aluminium, zirconium, magnesium, chromium, or iron, and adding thereto calcium hydroxide solution to adjust the pH to from 8.0 to 8.5.  The metal salt may be a sulphate or an alum, e.g. ammonium or chrome alum.  The refractory, which constitutes the bulk of the wash, may be zirconite flour, to which a small proportion of bentonite may be added.  Silica flour and the oxides of aluminium, magnesium, beryllium or chromium may also be used as the refractories.  Organic binders, such as dextrin, sulphite pulp liquor, molasses or sodium carboxy-methyl cellulose, may also be present.
Patent GB-789177-A (GB)
Title: Improvements relating to screen printing processes
Inventor: ROTHWELL JACK
IPC: B41F15/38
Filed: 1955-04-26
Abstract: 789,177. Stencils. BRITISH COTTON & WOOL DYERS' ASSOCIATION, Ltd. April 5, 1956 [April 26, 1955], No. 11975/55. Class 100(2) Means for use in applying a pattern to a cylindrical wire gauze screen comprises a metal cylinder and an extensible sleeve surrounding the cylinder and supported thereby when not inflated, and adapted to be inflated to give adequate support to the wire gauze screen. A perforated metal cylinder 10 having inturned ends is secured by screws 15 to end'plates 8 located by nuts 7, 11 on a tube 12 surrounding a spindle 5 rotatable in the head of a swivel pin 6. The pin 6 rests on a brass ring 4 and is rotatable in a brass bush 3 in a swivel housing 2 fixed to a pillar 1. Surrounding the cylinder 10 is a rubber sleeve 9 whose ends are clamped by the screws 15 between the plates 8 and the ends of the cylinder 10. A cylindrical gauze screen of slightly greater diameter than the cylinder is placed around the sleeve 9, which is then inflated by air admitted through a valve 13 so as to contact the inner surface of the screen and support it. A pattern is then applied, by exposure to light under a negative, to the screen, the spindle 5 and pin 6 being rotated as required to bring the screen into the desired positions. A pressure release tap 14 is provided.
Patent GB-169742-A (GB)
Title: Improvements in safety devices for machine-tools
IPC: F16P3/04
Filed: 1920-04-30
Abstract: 169,742. Kederieh, H. April 30, 1920. Interconnecting guards or protector with starting-gear.-Consists in a guard for machine tools which falls as the tool approaches the work and allows the driving-means to become operative. The device is shown as applied to an eccentricactuated press driven from the pulley 21 by a wedge coupling of known kind in which the wedge 22 is held in the coupling position by a spring pressing on the extension 24. The machine can be stopped at any time by a treadle 28 which brings a stop 27 into the path of the extension 24. The guard 3 is pivoted at 5 and weighted at 8, and an arm 7 on the guard is connected by a link 12 to a weighted lever 11 which is coupled by a link to the second stop 2, which is in the path of the extension 24 except when the guard 3 is in place. One end of a lever 15 lies between a pair of lugs on the press-head 53, and the other engages a snug on the link 12. As the press-head moves downwards the lever 15 swings and allows the guard to fall and withdraw the stops 2, so that the machine is started.
Patent GB-1439824-A (GB)
Title: Mixing and dispensing heads
IPC: B67D1/00
Filed: 1973-03-13
Abstract: 1439824 Mixing flowing streams BOOTH DISPENSERS Ltd 28 Aug 1973 [13 March 1973] 12102/73 Heading B1C A convergent-divergent dispensing nozzle for a beverage has a conduit 38 to which still or carbonated water may selectively be supplied, and a tube 46 for flavouring syrup passing through one of seven apertures 62 in a disc 56 so that jets from the tube and apertures commingle. Up to six of the apertures 62 may accommodate a tube as 46 for different flavouring syrups. The liquid supplies are controlled by solenoid-operated valves (18, Figs. 3 and 4 not shown). In another embodiment, see Fig. 5 (not shown) there is no disc 56 and the tube 46 passes through the wall of the nozzle at an acute angle to the axis, water being supplied through an annular clearance space surrounding the tube.
Patent GB-494682-A (GB)
Title: Improvements in or relating to electron discharge devices for amplifying or generating electrical oscillations and for like purposes
IPC: H01J31/04
Filed: 1937-04-28
Abstract: 494,682. Cathode-ray tubes ; amplifying, generating, and modulating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. April 28, 1937, No. 12173. Convention date, April 28, 1936. [Classes 39 (i) and 40 (v)] An electron beam is transversely deflected by control potentials or currents and the alternating energy of transverse motion of the beam is taken out by one or more coils or conductors, with which the transversely moving beam interacts, by electromagnetic induction effect; the device is suitable for amplification, generation or frequency multiplication of shortwave oscillations. In one form, a focused beam is deflected by plates so as to pass between the turns of a coil to a collecting anode within the coil. In another form, Fig. 2, the transversely deflected beam induces currents in parallel conductors S1, S2 lying in the plane of deflection, and forming short-circuiting conductors at the voltage nodes of a Lecher system LI, L2. The conductors may also form the ends of a Lecher system L1, L2, Fig. 3, the short-circuiting bridge A3 acting as collecting anode ; in a modification, the wires LI, L2 are connected to plates PI, P2 so as to produce back-coupling. In a frequency-multiplier, Fig. 5, the induction electrodes L1, L2 are out of the plane of deflection, so that the induced current has twice the frequency of beam deflection ; in a further modification, four such conductors are arranged, two on either side of the plane of deflection, and are coupled together so as to give four-fold multiplication. The control deflection may be magnetic, when conductors similar to S1, S2, Fig. 2, may be employed. Modulation or regulation of the beam may be effected by variation of its velocity, but preferably its intensity is varied by a Wehnelt cylinder, since in the first case upsetting of the phase balance in back-coupled arrangements may cause undesirable frequency modulation. In another method, modulation voltages deflect the beam in a direction perpendicular to the high-frequency deflection, so as to move the beam to and from the induction conductors.