baber/WOPTO huggingface dataset:
Patent GB-478430-A (GB)
Title: Improvements in and relating to apparatus for maintaining constant voltage
IPC: H02P9/26
Filed: 1936-06-18
Abstract: 478,430. Automatic control systems. BRITISH THOMSON-HOUSTON CO., Ltd. June 18, 1936, No. 17009. Convention date, June 18, 1935. [Class 38 (iv)] Electromotive force.-To maintain constant the output voltage of a generator 1 two glow discharge tubes 9-10 are connected in parallel circuits, one of which includes a resistance 11, and are subjected to the output voltage variations, e.g., as shown, through a transformer 6 and rectifier 7 with smoothing circuit 8. The variations thus appear wholly across the resistance 11, and a triode 12, connected across one tube 9 is controlled by the difference between the voltages across resistance and tube section. The impedance of power amplifiers shunting a resistance 15 in the field circuit of the generator is modified accordingly. In a modification, Fig. 2 (not shown), the aforesaid difference voltage is applied to the grid of a triode connected across the whole or part of the tube 10 and controlling the grid voltage of a second triode connected across the tube 9 and influencing the power amplifiers.
Patent GB-149503-A (GB)
Title: Improvements in or relating to vehicles of the self laying track type
IPC: B62D55/24
Filed: 1919-07-08
Abstract: 149,503. Reddaway, F. July 8, 1919. Portable track wheels. - A flexible endless track comprises a band of rubber reinforced at e, f with canvas, which may be cut on the bias, and with longitudinal ribs m, n registering with grooves in the wheels g. The ribs comprise an outer covering a of hard rubber and a core b of soft rubber containing a number of thick cords of soft rubber c each enclosed in an envelope d of plaited textile fibre. The wheels may be mounted as described in Specification , 132,319.
Patent GB-273714-A (GB)
Title: Improvements in shuttlecocks for badminton and the like
IPC: A63B67/18
Filed: 1927-06-28
Abstract: 273,714. Spalding & Bros. (British), Ltd., A. G., (Assignees of Saunders, A. T.). July 1, 1926, [Convention date]. Shuttlecocks. - A shuttlecock for badminton and like games comprises a head and a conical, featherless vane, the vane being sufficiently stiff to maintain its form in play. As shown, the shuttlecock comprises a cork head 2 to which is cemented a conical vane 1 formed of fabric stiffened with glue, celluloid or similar material. The vane is further stiffened by creases 3. Openings a are formed in the vane adjacent the head and between the creases 3. The stems 5 situated between the openings may be reinforced by wrappings 5a, Fig. 6, of the same material as the vane. A weighting plug 6, Fig. 2, is disposed within a central recess in the head. The outer edges of the vane and of the openings therein are serrated.
Patent GB-374279-A (GB)
Title: Improvements in or relating to grease pumps
IPC: F16N21/04
Filed: 1931-06-12
Abstract: 374,279. Grease-pump connections. WHITELEGG, R. H., Marlborough, River Road, Taplow, Buckinghamshire. June 12, 1931, No. 17147. [Class 99 (i).] Relates to grease pumps 15 in the form of a barrel which is provided at one end with a U-shaped slot 14 for attachment to the nipple 10 of the lubricator and at the other end with a plunger 19 adapted to bite off a charge of hard grease from a supply introduced in candle-like formation into a lateral aperture 22 in the barrel and to force same into the lubricator. Fluidtightness between the pump and lubricator nipple is secured by a metal bush 16, Fig. 1, which is mounted in a grease-tight manner within the outlet of the pump and is adapted to be forced against the head 13 of the nipple by the pressure of the passing grease. The internal diameter of the bush is at least equal to the diameter of the nipple orifice, and the outer end thereof may be faced with leather &c. The nipple is provided with a ball valve 11, and the head thereof is preferably button-shaped for engagement by the end slot 14 of the pump. In a modification, Fig. 2, the bush is constituted by the outer end of a liner 18 slidable within the pump barrel and within which the plunger 19 is adapted to be reciprocated. The invention is also applicable to pumps having a bayonet ,connection with the lubricator.
Patent GB-1193685-A (GB)
Title: Improvements in or relating to Clamps
Inventor: STREET ARTHUR
IPC: F16B2/06
Filed: 1967-04-14
Abstract: 1,193,685. Clamps. POLAR HYDRAULICS Ltd. 4 April, 1968 [14 April, 1967], No. 17147/ 67. Heading E2B. A clamp includes a primary gripping member 25 and a secondary gripping member 26 adapted, when in their operative positions, to engage and grip a rod-like article, the primary gripping member comprising a stem and a head portion 20 which presents an arcuate gripping surface facing in a direction towards the stem; the secondary gripping member being slidably mounted on said stem and comprising a yoke with the primary gripping member located between the arms of the yoke, the end portion of each of said arms presenting a substantially V-shaped gripping surface facing away from the stem and such that the substantially V-shaped gripping surfaces are disposed on opposed sides of the primary gripping member; and means 27 being provided for effecting relative sliding movement between the primary and secondary gripping members in a direction axially of the stem of said primary member to draw said gripping surfaces into gripping engagement with the article located therebetween. In the construction shown the arcuate surface is provided by a circular aperture. The substantially V shaped clamping faces enable articles of different size to be gripped. The secondary gripping member has a frusto-conical end portion which enters a countersink formed in a member 13 by which, the clamp is supported, the stem of the primary gripping member passing through the member 13 and the means 27 being on the opposite side of the member 13 to the secondary gripping member 26. In a modification, the member 13 is replaced by a band clamp having a split circular aperture which is engageable with a post, this clamp providing the counter sink and being moved to gripping position by the means 27 at the same time as the primary and secondary gripping members are moved into clamping engagement.
Patent GB-419872-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/46
Filed: 1934-06-11
Abstract: 419,872. Cathode-ray tubes. COSSOR, Ltd., A. C., Highbury Grove, London.- (Assignees of Ardenne, M. von; 19, Jungfernstieg, Lichterfeld-Ost, Berlin.) June 11, 1934, No. 17249. Convention date, June 12, 1933. [Class 39 (i).] The tube is provided with means for accelerating the electrons between the zone of deflection and the screen and with means for decelerating the electrons during their passage between the anode or gun and the deflecting zone. The decelerating and the accelerating fields may be produced by means of comb-shaped cylindrical members, the teeth of which are wedge-shaped and interengage one with the other. A central comb-shaped member 13 forms part of both the decelerating and accelerating units and is attached to a disc 11 which is electrically connected to one of a pair 4 of deflecting plates and to earth and is provided with an aperture covered with wire netting. The decelerating and accelerating systems are completed respectively by the comb-shaped member 10, attached to the anode 3, and the comb-shaped member 12 which is connected to the conducting screen 5. The voltage of the battery B may be 100 and the potential of the member 12 may be twice that of the anode. A filling of argon may be used.
Patent GB-186668-A (GB)
Title: Improvements in valves
IPC: F16K39/02
Filed: 1921-06-24
Abstract: 186,668. Rydberg, H. S. A. June 24, 1921. Valves controlled by pilot or relay valves.- A valve actuated by fluid pressure under the control of an auxiliary valve has a double-acting auxiliary valve housed within the main valve member and arranged so that the main valve can be maintained in any desired position. The main valve 3 is formed integrally with a piston 6 and is provided with seats 22, 23 for the auxiliary valve 26, and with passage ways 24, 25 whereby the space behind the piston may be simultaneously or alternately connected to the main inlet and an outlet by actuating the rod 15.
Patent GB-119150-A (GB)
Title: Improvements in Tapping Machines.
Inventor: COOPER JOSEPH
IPC: B23G1/16
Filed: 1917-11-23
Abstract: 119,150. Cooper, J. Nov. 23, 1917 Tapping. - A tapping machine has a revolving and longitudinally movable tap-carrying spindle A mounted in a headstock or in adjustable bearings B and having fixed on it a clutch member D<2> through which a spacing pin d<1> slidably passes, to keep the forward driving member D and the reverse driving member D<1>, mounted loose on the spindle A, apart. The clutch members may engage frictionally, but preferably have teeth d. A spring a<2> normally keeps the forward driving members in engagement. The work may be carried in a holder c on a slidable non-rotating spindle C having an adjustable collar E which limits the movement of the spindle C, and thus causes the spindle A to be drawn forward at the end of the tapping operation so that the reverse driving members are engaged.
Patent GB-118751-A (GB)
Title: Improvements in Steam Turbines.
Inventor: WAIT HENRY HEILEMAN
IPC: F01D17/20
Filed: 1917-11-26
Abstract: 118,751. Wait, H. H. Nov. 26, 1917. Centrifugal governors; transmitting-mechanism. -Relates to improvements in the mechanism and in the lubrication of centrifugal governors for steam turbines. The inlet-valve 74, 75, Fig. 2, of the turbines is connected by linkage with a lever 54, Fig. 1, mounted on a pivot 63 and engaged by a spring-controlled plunger 46, which rotates with and is longitudinally movable inside, the turbine shaft 3, which is slotted to receive the governor arms 42. These arms are loosely fulcrummed, preferably in parallel grooves 40, Fig. 4, on a head plate 35 secured to the shaft, and have notches 48 engaging resilient plates 47 secured to the plunger 46. The plunger carries a thrust bearing 58 enclosed by a cup 57 which engages a conical pin 62 on the lever 54. When the speed exceeds a fixed limit, a spring-controlled plunger 100, Figs. 3 and 4, in the plate 35 is thrown outwards so as to engage a lever 95 which through suitable linkage withdraws a detent. thereby closing a butterfly valve 85, Fig. 2. Figs. 1 and 5 show the construction of the shaft-bearing sleeve 19 in two parts 13<a>, 13b and the arrangement of the lubricating ring 25, which dips into an oil well. To permit the removal of the shaft, the lips 114 of the bearing, Fig. 9, may be detachable. From the shaft bearing, oil is supplied by an inclined channel 108, Fig. 7, a duct 107 and a tube 106, Fig. 3, to the cup 57 cf the thrust-bearing 58, and is returned to the oil well 18 by being led through a perforated tail piece 109, Fig. 1, of the cup 57 to the channels 111, 112. The tail-piece 109 bears against a bridge 110 to prevent rotation of the cup 57.
Patent GB-1400013-A (GB)
Title: Improvements relating to the production of lubricating oils
Inventor: BENNETT ROBERT NEIL
IPC: C10G71/00
Filed: 1972-04-17
Abstract: 1400013 Lubricating oil; gasoline; hydrocracking BRITISH PETROLEUM CO Ltd 28 March 1973 [17 April 1972] 17565/72 Heading C5E Lubricating oil and gasoline are produced from a petroleum feedstock containing a major proportion of material boiling above 350‹ C. by first hydrocatalytically denitrogenating and desulphurizing the feed and then contacting the product, including the NH 3  and H 2 S produced, at 350-450‹ C. and 70-265 bars gauge in the presence of hydrogen and a catalyst comprising a hydrogenating metal and an alkali metal-deficient zeolite of the faujasite type to produce a lubricating oil, boiling above 350‹ C. and having an improved viscosity index, and a gasoline boiling below 204‹ C. The feedstock suitably contains 0À02-0À30 wt. per cent nitrogen and 0À2-3 wt. per cent sulphur and can be a vacuum distillate boiling in the range 350-650‹ C. which can comprise 5-30 wt. per cent of a catalytic cracker cycle oil or it can be a deasphalted vacuum residue. The preliminary hydrocatalytic denitrogenation and desulphurization can be carried out using a catalyst such as Mo and Ni on silica-alumina. The faujasite catalyst suitably comprises zeolite X or Y with 20-80% of the theoretical alkali metal content replaced by alkaline earth metal, e.g. magnesium, or in part by alkaline earth metal and in part by hydrogen ions and contains 0À01-5 wt. per cent Pd or Pt which can be incorporated by ion exchange. The lubricating oil can be fractionated before or after the hydrocracking and can be dewaxed, e.g. with a methyl isobutyl ketone at - 18‹ C.
Patent GB-706263-A (GB)
Title: Improvements in and relating to the production of artificial filaments
Inventor: BASHFORD LESLIE ARTHUR
IPC: D01F6/18
Filed: 1951-07-25
Abstract: Artificial threads are produced by extruding a solution of an acrylonitrile polymer in a water-miscible organic solvent into an aqueous solution of potassium acetate of concentration from 20 per cent. up to saturation point.  The polymer may be a homopolymer of acrylonitrile or a copolymer thereof with a minor proportion of another polymerizable compound, e.g. styrene, methyl acrylate or vinyl acetate.  The solvent may be dimethyl formamide and the solution may comprise between 15 and 20 per cent. of the polymer. The temperature of the coagulating bath may be from room temperature to 50 DEG C.  The coagulated product may be stretched up to 1,000 per cent. in glycerol at temperatures between 100 and 140 DEG C., or stretched up to 40 per cent. in air at temperatures between 15 and 40 DEG C. and then hot-stretched to give a total stretch up to 1,520 per cent.  After stretching, the filaments may be washed and dried without tension in air at 65 DEG C. or cut into staple fibres which are washed and then dried.  Examples are given.  Specifications 459,596, 461,675, 583,939, 584,548 and U.S.A.  Specification 2,467,553 are referred to.
Patent GB-243044-A (GB)
Title: An improved method of and apparatus for disintegrating vegetable and wood fibres and other material
IPC: B02C19/00
Filed: 1924-07-23
Abstract: 243,044. Lindsay, J., (Barbour, S. E.). July 23, 1924. Conical mills.-A cylinder 1, provided with a spirally grooved interior grinding-surface 15 'backed with rubber 14 is resiliently supported on springs 5 in a framework 8 so as to be capable of being rotated through bevel gearing 9, 10 driven from a pulley 11. A shaft 16 is mounted in the cylinder and carries a number of wheels 20 having sector-shaped radially adjustable grinding surfaces 21 backed with a rubber backing 22, each wheel being mounted between springs 25 and carrying telescoping guards 26, 27 to deflect material to be crushed between the co-operating grinding-surfaces. The material is fed in at the top on to a cone 28 and is crushed &c. in its passage through the cylinder, the wheels 20 preferably increasing in diameter downwards along the shaft to render the process gradual. The shaft 16 and wheels 20 may be driven in the opposite direction to the cylinder, or in the same direction but at a different speed, or the wheels 20 may bo held stationary while the cylinder 1 is rotated.
Patent GB-185266-A (GB)
Title: A device for keeping the chains and belts of sprung frame motor cycles, cars, wagons, and the like, at correct tension
IPC: B62K25/28
Filed: 1921-06-29
Abstract: 185,266. Gummersall, J. R. June 29, 1921. Chain, axle, and like distance members or adjusters and radius-rods. - In order to keep the driving-chain of a motor-cycle, or other vehicle at constant tension, the road wheel is mounted on rocking arms having a virtual centre of rotation at the centre of the driving-sprocket. The arms A are formed with slots rocking on a fixed cylindrical frame member B, the arms being further controlled by links F pivoted at E to the arms and at G eccentrically to the member B. The links F are large enough to cover the slots in the rocking arms. The effective radius of the rocking arms may be varied by altering the position of the pivots G, and by altering the length of the links F.
Patent GB-649303-A (GB)
Title: Improvements in or relating to inertia switches
Inventor: HEMSWORTH CYRIL KINGSTON
IPC: H01H35/14
Filed: 1948-07-01
Abstract: 649,303. Inertia switches operated by impact. MINISTER OF SUPPLY. July 1, 1948, Nos. 17711 and 20621. [Class 38(v)] An inertia switch, operable on impact or deceleration of a vehicle or craft in which it is mounted, comprises a movable member carried by and movable relatively to a pendulum member to effect operation of the switch. In Fig. 1, the pendulum member is in the form of a vane 3 and is pivoted at 9 in a gimbal ring 5 which is pivoted to the casing 6 at 10. The movable member 4 is pivoted at 8 to the pendulum 3 and is normally held in the position shown by a spring 11, wherein spring contact blades 1, 2, carried by the pendulum, are open. The casing is filled with a movement-damping fluid so that on impact, the member 4 moves relatively to the member 3 and closes the contacts, which are held closed by spring 11. In a modification, Fig. 3, the movable member comprises a contact and bob-weight 33 slidable on a spindle 35 and normally held in the position shown by a spring blade 32 clamped to the pendulum 21 at 34. On impact, the weight moves to the left to engage an adjustable contact 24 carried by member 21, the weight being held in this position by a spring 40 engaging behind a shoulder 41 on the weight. The movement of the pendulum may be limited to about 15 degrees on either side of the vertical by stops on the casing'or by a projection 38 co-operating with a ring 39. The movable member may be universally-mounted so as to be sensitive to horizontal accelerating movements applied within about 30 degrees of the fore and aft axis of the vehicle, in which case the fixed contact or contacts are of arcuate form. The pendulum may carry a second movable member responsive to vertical deceleration.
Patent GB-421593-A (GB)
Title: Manufacture of starch disintegration products capable of forming films
IPC: C08L3/00
Filed: 1933-06-23
Abstract: Disintegration products of starch capable of forming films are obtained by subjecting starch to a known disintegration process terminating the disintegration when the product is capable of forming a film on boiling with water and removing and purifying the product as desired.  The progress of the disintegration is followed by withdrawing test samples at intervals, boiling with water to produce a 25 per cent solution and pouring while still hot upon celluloid. The films may be produced by pouring the hot aqueous solution on to a backing or support and removing the film after drying.  According to one example an aqueous solution of corn starch is admixed gradually with an aqueous alkaline solution of sodium hypochlorite.  When the disintegration has sufficiently progressed it is interrupted by the addition of sulphuric acid or thiosulphate.  The product is then filtered, washed and dried.  In a further example potato starch is disintegrated by treatment with dimethylsulphate.
Patent GB-497852-A (GB)
Title: An improved device for preventing the condensation of steam on windows or elsewhere in a room or for removing such condensation
IPC: E06B7/12
Filed: 1937-06-29
Abstract: 497,852. Preventing condensation on windows. DAWES, S. C. W. June 29, 1937, No. 18027. [Class 20 (iii)] [Also in Group XIII] Condensation in a room, e.g. on a window is prevented by a container having a chamber a of expansible volume holding quick lime or other absorbent, the chamber having a partition slidable in the container with an upper surface f of cloth, and a top cover g closing the container to air during storage. An inwardly turned flange b at the top of the container wall prevents accidental removal of the partition, which has sides e which may be formed as bellows. As the lime expands on becoming moist, the partition rises and so indicates exhaustion of the material. A cross piece i holds the partition in place during transit. Specification 494,710 is referred to.
Patent GB-277775-A (GB)
Title: Improvements in, or relating to, coin-freed apparatus
IPC: G07F9/10
Filed: 1926-07-19
Abstract: 277,775. Shaw, A. H. Downes-, and Brecknell, H. E. F. July 19, 1926. Hand-trucks.-A transporting device for coinfreed apparatus comprises a two-wheeled trolley of greater length than the width of the apparatus or its under-carriage, which is brought into a position transverse to the apparatus, a shaft of the trolley being then given a partial rotation to move the wheels downwards relatively to the undercarriage or base so that they support it. In the form shown in Fig. 5, the trolley is detachable, and the undercarriage has a pair of brackets 21 formed with circular bearing surfaces 22 and inclined bearing surfaces 23 ending in shoulders 24. The trolley wheels 12 are mounted on an axle 25 having cranks 26 provided with bosses 27 and inclines 28 to fit the bearings 22 and 23 respectively. In use the trolley is placed under the brackets and the cranks are turned by levers inserted in holes 11<a> until they engage the brackets, thereby raising the feet 3 of the undercarriage off the ground.
Patent GB-885866-A (GB)
Title: Boron phosphate catalyst composition
Inventor: ROSSET ARMAND JOHN DE
IPC: B01J27/188
Filed: 1960-05-23
Abstract: A catalyst comprises a calcined composite of below 40% of a hydrogenating Group V-VIII metal component and a base containing 95-20% of a refractory oxide and 5-80% of boron phosphate. Preferred hydrogenating components are Pt, oxides of Mo and Co, and oxides of Mo and Ni, while others listed are Pd, Ni, Co, Fe, Mn, Cr, Mo, W, V and Ni-W; the metals may be present as, e.g. sulphide, oxide or halide.  Preferred oxide constituents are alumina and silica-alumina; other constituents mentioned are halogens, magnesia and combinations of silica with zirconia, titanium and boria.  The catalysts of the invention are stated to have diminished coke lay-down in various hydrocarbon conversion reactions.
Patent GB-1300496-A (GB)
Title: Improvements in or relating to the purification of alkali and alkaline earth metals
IPC: G01N33/20
Filed: 1971-05-28
Abstract: 1300496 Refining alkali and alkaline-earth metals INTERATOM INTERNATIONALE ATOMREAKTORBAY GmbH 28 May 1971 [23 July 1970] 18182/71 Heading C7D [Also in Division G6] Carbon impurity is removed from alkali or alkaline-earth metals by passing hydrogen or a hydrogen-containing gas through the metal in molten state, and separating the resulting methane from the metal. The melt is preferably maintained at temperatures between 200 and 600 C while the partial pressure of the hydrogen should not exceed 1 atmosphere. An additional small quantity of oxygen speeds the removal of carbon. Apart from its use in refining the metal, and the incidental preparation of pure methane, the invention is particularly applicable to the monitoring and detecting of the carbon content of sodium in the coding systems of nuclear reactors, where a gas chromatograph or flame ionization detector can accurately measure the methane concentration. Apparatus A vessel 1, having a lid 5 and heater at 4 contains molten sodium, the level 3 being maintained by filling gauge 2. A stream of sodium, e.g. withdrawn from the cooling system of a nuclear installation, enters the vessel at 6 and leaves at 7 to flow back into the installation. Hydrogencontaining gas flows through pipe 9 into the sodium by means of openings 10; the methane formed is entrained with the hydrogen-containing gas as it is conveyed through pipe 11 to separator 12, where any sodium is removed, and measuring arrangement 13, where the methane content is evaluated. Hydrogen disolved in the exit sodium stream is removed at 8 by, e.g. a hydrogen-pervious membrane under vacuum. If the hydrogen is recycled from measuring arrangement 13 to pipe 9, while keeping the temperature of the melt constant, an equilibrium can be set up to provide a steady methane content reading.