baber/WOPTO huggingface dataset:
Patent GB-598878-A (GB)
Title: Improvements in or relating to rotary wing aircraft
IPC: B64C27/54
Filed: 1945-09-21
Abstract: 598,878. Rotary-wing aircraft. FAIREY AVIATION CO., Ltd., and BENNETT, J. A. J. Sept. 21, 1945, No. 24535. [Class 4] A rotary wing aircraft has a rotor in which each blade is provided with a flapping and a drag pivot, but not a feathering or torsional pivot, the blades being mounted on drag links so shaped that the drag hinge is spaced from the axis of rotation and offset from the flapping pivot, and the drag pivot being so located that the angular displacement of the blade in azimuth in response to torque causes the collective pitch of the rotor to vary automatically with variation in rotor power to keep the speed of the rotor substantially constant. The drag pivot allows a sufficient forward angular displacement to decrease the rotor pitch to Zero or a negative value when the rotor brake is fully applied. As shown, the blades are mounted by drag links e<1> on a tiltable rotor head c. If k is the position of the blades for zero torque, A the angle of lag for a torque Q, Ao the angle of lag when the blades are normal to the flapping axis X-X, F the centrifugal force on a blade, Bo the blade pitch at a lag of Ao, B the blade pitch at a lag of A, C the coning angle and x the distance of the drag pivot j from the axis of rotation : approximately. By suitably choosing x, the required variation of pitch with variation of rotor power may be obtained without providing a feathering or torsional pivot for each blade.
Patent GB-797575-A (GB)
Title: Improvements in or relating to mandrel adjusting devices for extrusion presses
IPC: B21C23/21
Filed: 1956-08-10
Abstract: 797,575. Extruding tubes. GES. DER L. VON ROLL'SCHEN EISENWERKE AKT.- GES. Aug. 10, 1956 [Aug. 10, 1955], No. 24553/56. Class 87(2). [Also in Group XXII] An extrusion press has a mandrel 4 mounted in a carrier 3 whose rear end is screw-threaded and engages with the threaded bore of a worm wheel 12 meshing with a driving worm 14 and mounted within a movable crosshead 5 and the mandrel carrier has a pair of coupling means 22, 23 non- rotatable but axially movable relative thereto and of which selectively the means 22 may be secured to the worm wheel to effect rotation of the mandrel, or the means 23 may be secured to the press ram 2 for holding the mandrel carrier against rotation and allowing the worm wheel to move the mandrel axially. The worm 14 may be turned manually by a handle 15 or by a motor 17. The coupling means 22, 23 are discs having keys engaging in longitudinal keyways 3c in the carrier 3. Tee-headed bolts 22a. 23a engageable in annular grooves 12a, 2b respectively in the worm wheel and press ram are used for coupling the discs thereto. The cross-head 5 is moved by hydraulic motors 7, 8 mounted on a fixed cross-head 9. The press ram works in a main cylinder 1.
Patent GB-164269-A (GB)
Title: New or improved means and method of applying lead linings to steel or other pipes
IPC: B22D19/00
Filed: 1920-08-24
Abstract: 164,269. Harden, T., and Chesterfield, N. A. C. Aug. 24, 1920. Metal pipes and tubes. - In lining metal pipes with lead or the like, the pipe is first perforated at a number of points, a tubular lining is inserted and expanded by fluid pressure, and molten lead, solder, &c. is pcured into the perforations to form studs or rivets. Apparatus for expanding the lining comprises two stoppers k<1>, k<2> closing the pipe ends. The distance between the stoppers is adjusted roughly by means of a movable tailstock b sliding in a groove a<2>, and then by a handwheel n. Through the stopper k<1> extends a pipe d which communicates independently with a source of water supply, a source of fluid pressure, and a relief pipe for drawing off the water after the expansion is comnleted.
Patent GB-1343733-A (GB)
Title: Reciprocating and oscillating piston compressor
IPC: F04B39/04
Filed: 1971-04-19
Abstract: 1343733 Reciprocating compressors GUNWEB Ltd 19 April 1971 [9 March 1970] 24592/71 Heading F1N [Also in Division F2] A compressor comprises a piston in the form of a truncated sphere, the piston being reciprocated and oscillated in a cylinder 23 by a rod 36 having one end rigidly fixed to the piston and the other end journalled on a crank-pin 41. During the suction stroke a crown portion 33 of the piston moves away from a skirt portion to uncover channels 47 and allow fluid to enter the  cylinder from a crankcase 44. Fluid compressed in the cylinder is delivered past a ball valve 28 in the cylinder head. The skirt portion is provided with a ring 43 having an outer surface which is part of a sphere of the same diameter as the cylinder. The ring 43 may be of Teflon, Teflon bronze or glass filled Teflon (registered Trade Mark) and split, the ends being of half width and in abutment along a mid plane 58. A spring member may be provided to urge the ring to expand. The cylinder 23 may be of cast steel with a zinc compound coating 60 or cast zinc with a nickel plated or anodized surface 60.
Patent GB-360518-A (GB)
Title: Improvements relating to metal working presses
IPC: B21D24/00
Filed: 1930-08-18
Abstract: 360,518. Metal-working presses. RODE, F. J., 6500, West 65th Street, Chicago, U.S.A. Aug. 18, 1930, No. 24624. [Class 83 (iv).] The ram 25 of a metal working press runs in guides 24 and is suspended from four screwed rods 31 which pass through the screwed corners of a guide block 52 reciprocated by a connecting rod 38 from a crank pin 15, which therefore reciprocates the whole assembly including the ram 25, the guide block being provided with bosses 54 which slide in grooves in the side frame 12. The height of the ram is adjusted by an electric motor 58 which screws the rods 31 up or down in the guide block through a splined shaft 64 free to slide in its top pinion 62 while transmitting rotation through worm gearing 72 to the screw rods 31. The halves of the crank pin bearing, Fig. 3, are secured by bolts 41 which are thinned at 44 to break under undue stress in which case the lower half of the bearing is yieldingly held up by a bolt 45 with spring 48 so that the lower half does not fall away and cause jamming.
Patent GB-894808-A (GB)
Title: Roll-grinding machine
IPC: B24B5/04
Filed: 1960-07-15
Abstract: 894,808. Roll-grinding. FARREL-BIRMING- HAM CO. Inc. July 15, 1960 [Aug. 11, 1959], No. 24713/60. Addition to 819,880. Class 60. The roll-grinding machine of the parent Specification has the means for adjusting the wheel head about its pivotal attachment of the sub-base constituted by a support element which is slidably mounted in the wheel-head at a point remote from the wheel-head pivot, supported at one end on the machine sub-base, and arranged to be adjusted relative to the wheel-head, whereby the wheel-head is pivoted relative to the work. The sub-base 18, movable on slides 17 towards or away from the work 13, carries the pivot 22 of the wheel-head 21 at its forward end and a crowning- cam 40 at its opposite end, a follower 39 being carried at the lower end of a sliding member 38 vertically adjustable in the remote end of the wheel-head to provide for fine adjustment of the wheel. A hand wheel 35 enables preliminary adjustment to be made by rotation of a horizontal screwed-shaft 24 in a nut 26 supported by a rest 15. Fine adjustment is effected by a wheel 48, which rotates, through a reduction gear 45, 44, a screwed shaft to move the sliding member 38 which is itself held against rotation by a guide member 51 slidable within a slot 52, Fig. 2; the end of the wheel-head remote from the grinding wheel is held against lateral movement by rollers 76 carried by bell-cranks 74 having adjusting screws 77. The crowning motion of the grinding wheel is effected by rocking the wheel-head about its pivot 22 by rotating the radially-adjustable crowning cam 40 mounted at the end of a shaft 53 carried in the sub-base 18, the shaft being driven as a carriage 12 is reciprocated, by a pinion 65 engaging a rack 66 on the machin2 base 10, a vertical shaft 61, and worm gears 60, 6e in sliding-driving engagement with the shaft 53. The grinding wheel shaft 20 may be driven through multiple belts 72 by a motor 70. A second grinding wheel, similarly operated and supported, may be provided on the opposite side of the roll 13.
Patent GB-969883-A (GB)
Title: Roller bearings
Inventor: FREEMAN FRANK GEORGE
IPC: F16C19/34
Filed: 1963-06-21
Abstract: 969,883. Bearings. JOSEPH LUCAS (INDUSTRIES) Ltd. June 21, 1963, No. 24719/63. Heading F2A. In a roller bearing the rollers are arranged so that alternate rollers 6a have their axes radially disposed in relation to the axis of the bearing and intervening rollers 6b have their axes parallel to the axis of the bearing. The rollers are mounted between an inner member 4, having a radially outwardly directed flange 4b, and an outer member 5, having a radially inwardly-directed flange 5b. The rollers 6a, 6b are similar, have radiused edges, and have diameters which are greater than their lengths. An annular cage 7, having a number of equiangularly spaced cylindrical recesses formed alternately in its end face and in its internal periphery, locates the rollers.
Patent GB-1275223-A (GB)
Title: Nuclear reactor fuel-rod casings
IPC: G21C3/10
Filed: 1970-05-21
Abstract: 1275223 Fuel elements SIEMENS AG 21 May 1970 [22 May 1969] 24754/70 Heading G6C A nuclear fuel rod comprises a metallic casing 2 closed at its ends by plugs 6, 7 welded as at 8, each plug 6, 7 having a peripheral surface part 63, 73 which extends axially from the weld 8 into the casing 2 and which tapers in the axial direction away from the opposing plug. The casing 2 contains nuclear fuel tablets 3, 4 formed with recesses in their end faces in order to take up thermal expansion of the tablets during operation. A ceramic tablet 5 provides thermal insulation of the lower end plug 6 from the fuel, whereas the upper end plug 7 is separated by a space from the hot central zone of the fuel. The plugs 6, 7 have respectively a recess 62 and an annular groove 72 which serve to render uniform heat dissipation conditions in the casing 2 and in the end plugs, thus facilitating the welding operation. The plug 7 may be fixed in position by one of several methods starting with an empty tube of uniform cross-section. For example, the plug 7 may be inserted into one end of the tube 2 and the tube pressed against the taper of the plug in order to taper the tube. On removing the pressing force, the tapered portion of the tube springs away from the taper of the plug, which is then moved forwards into contact with the tapered portion and urged further forwards so as to resiliently deform the tapered portion and bring a forward edge of the plug adjacent with the end of the tube. The plug 7 is then welded to the end of the tube 2. Alternatively, the end of the tube 2 is tapered before the plug 7 is introduced. After the plug 7 is fixed in position, the tube is charged with fuel and the plug 6 is inserted into the opposite end of the tube which is then shaped to conform to the taper of the plug 6. The shaping force is removed and the tapered portion of the tube springs away from the tapered portion of the plug 6, which is then moved forwards, in a similar manner to that in which the plug 7 was moved, and welded in position. Both the plugs are locked in position during the welding operation by virtue of the resilience of the tube, and there is thus no need to use a special tool to hold the plugs in position.
Patent GB-443162-A (GB)
Title: Improvements in liquid cooling systems for internal combustion engines
IPC: F01P3/22
Filed: 1934-08-29
Abstract: 443,162. Valves. ELLOR, J. E., Grandell, South Drive, Chain Lane, Mickleover, Derby. Aug. 29, 1934, No. 24855. [Class 135] In a liquid cooling system for an aircraft engine, a balanced valve is provided to close a passage in the system when the aircraft is flying inverted ; flooding of the condenser or other part of the system is thus prevented. The valve comprises a reel-shaped member g which when inserted slides in a guide g<4> to rest on seatings f<2>, h<1> and thus close the passage of liquid or vapour both through and around it. A pressure-relief valve, byepassing the valve, comprises a valve member l<1> pressed on its seating by a coiled spring l and a double leaf spring k<3>. The valve is associated with the cooling system described in Specification 443,161, [Group XIII].
Patent GB-796145-A (GB)
Title: New derivative of precalciferol and process for its production
IPC: C07C401/00
Filed: 1956-05-09
Abstract: The invention comprises the 3,5-dinitrobenzoate of monoepoxycalciferol having a m.p. of 148-149 DEG  C., monoepoxycalciferol having a m.p. of 109-110 DEG  C. and a process for the production of the 3,5-dinitrobenzoate of monoepoxyprecalciferol, characterized in that precalciferol dinitrobenzoate dissolved in a solvent therefore which is immiscible with water, e.g. ether, is oxidized with an organic peracid, e.g. perphthalic acid at a temperature comprised between - 10 DEG  and + 10 DEG  C. so as to produce the 3,5-dinitrobenzoate of monoepoxyprecalciferol.  Preferably the starting material is dissolved in ether and the reaction effected with perphthalic acid between - 5 DEG  to + 5 DEG  C.  Subsequently the 3,5-dinitrobenzoate may be saponified in an inert solvent, e.g. ether with a solution of potassium hydroxide in methanol to obtain the 3,5-dinitrobenzoate of monoepoxyprecalciferol, or hydrolysed using aqueous sulphuric acid to obtain the 3,5-dinitrobenzoate of dihydroxy-dihydroprecalciferol which in turn yields dihydroxy - dihydroprecalciferol with potassium hydroxide in methanol.  In an example, the production of monoepoxyprecalciferol and the 3,5-dinitrobenzoate are described and also the subsequent conversion of the 3,5-dinitrobenzoate to the dinitrobenzoate of dihydroxy-dihydroprecalciferol and to dihydroxy - dihydroprecalciferol.  Specification 668,114 is referred to.
Patent GB-465860-A (GB)
Title: A preselector control device for change speed gears
IPC: F16H63/46
Filed: 1936-09-14
Abstract: 465,860. Preselect or control for change-speed gearing. FOURNAUX, W. Sept. 14, 1936, No. 25011. Convention date, July 17. [Class 80 (ii)] In a mechanical preselector control for change-speed gearing, the preselection is effected by displacing a cable 33, Fig. 4, manually so as to slide a pair of yoked cam wheels 15, 16, Fig. 3, along splined shafts 12, 13 which are afterwards rocked by the clutch pedal or other executive lever to effect the change. The clutch pedal stroke rocks a lever 28, Fig. 1 clockwise, which through a pawl 27 turns a wheel 22, Fig. 2, through 60‹. The shafts 12 13 are geared to one another and to outer shafts 18, 19, which carry neutralizing cam drums 201 Fig. 3, with long cams 20. The first effect of the pedal stroke is to cause the cams 20 of both drums at the bottoms of their paths to turn inwards towards one another. This inward sweep of the cams 20 engages a tappet such as 6, 8, 10 or 7, 9, 11 on any gear fork such as 2, 3, or 4, Fig. 3, which had been displaced from neutral, to return that fork to neutral. The geared shafts 12, 13, 18, 19 all turn through 120‹ and the first part of the displacement thus brings the change-speed gear, not shown, to neutral. The second part of the clutch pedal stroke brings cams 17 on the wheels 15, 16 into operation. These cams swing outwards from one another at the bottoms of their paths as shown in Fig. 3, and, according to the plane into which they have been set by the cable 33, one or other of the tappets 6 ... 11 is struck so that the fork 2 or the fork 3 or the fork 4 is moved outwards in a direction according to which of the two swinging cams 17 does the striking, one cam acting selectively on the tappets 6, 8, 10 and the other on the tappets 7, 9, 11. Each fork in its extreme outward position rests against the next following neutralizing cam 20, which cams go round and round, following one another.
Patent GB-1177515-A (GB)
Title: Preparation of Vinyl Acetate.
Inventor: CAPP CLIFFORD WILLIAM
IPC: C07C69/15
Filed: 1967-05-31
Abstract: 1,177,515. Oxidation catalysts. BP CHEMICALS (U.K.) Ltd. 22 April, 1968 [31 May, 1967], No. 25059/67. Heading B1E. [Also in Division C2] A catalyst comprising a platinum group metal i.e. platinum, palladium, rhodium, ruthenium, osmium or iridium, or metal compound together with gold or a compound of gold on a support comprising tin oxide may be prepared by simultaneous or sequential impregnation of the tin oxide support with an aqueous solution of a salt or salts of the respective metal or metals followed by drying. The deposited salt or salts may be reduced to the elemental metal or metals by a reducing agent such as hydrogen or alkaline hydrazine. The support may be tin oxide alone or comprise additional material such as silica which may be admixed with the tin oxide by forming an aqueous slurry of tin oxide, admixing with an aqueous solution of a suitable silicate e.g. an alkali metal silicate, followed by precipitation of silica by the addition of acid to the mixture and recovery of the admixed solids by filtration. Examples describe the preparation of catalysts containing 1.6% Pd, 0.46% Au, 1.42% Na and 0.2% C1; and 1.1% Pd, 0.36% Au, 2.0% Na and 0.17% Cl all percentages being by weight. The catalysts may be used in the preparation of vinyl acetate from ethylene, oxygen and acetic acid (see Division C2).
Patent GB-572566-A (GB)
Title: Improvements in theft-proof device
IPC: B60R25/021
Filed: 1939-09-01
Abstract: 572,566. Preventing unauthorised use of motor vehicles. NEIMAN, A. Sept. 1, 1939, No. 25100. Convention date, Sept. 1, 1938. [Class 79 (iii)] [Also in Group XXXVII] A device for locking the steering gear of an automobile and for breaking the ignition circuit comprises a cylindrical block removably mounted in a collar permanently fixed to the steering column. The collar 16 is welded to the steering column 11, an opening 15 being formed in the column to allow the passage of a locking bolt 23. A bush 13, welded to the steering rod 12, is provided with lateral openings 14 ta engage the bolt. The looking device comprises a cylindrical block 19 which is inserted in the collar 16 and is retained therein by a blade spring 27 which expands into a recess 18 in the collar. An aperture 31 in the collar permits the insertion of a spike to flatten the spring when the block is to be removed. The block 19 includes a cylinder lock B of known construction containing wards and controlled by a key 25. A rod 45 depending from the lock passes through a slot in the bolt 23 and rests in a recess 46 in a disc 39 of insulating material which carries a blade 41 that moves over contact studs 37 to which the ignition circuit is connected. Rotation of the lock by the key 25 operates the ignition circuit and, at the same time, permits a spring 33 to thrust the bolt 23 into one of the slots 14 and lock the steering wheel. This does not take place unless the key 25 is withdrawn, as a spring plunger 35 abuts against the lower end of the key. The key may also be turned to an intermediate position, shown in Fig. 5, in which the ignition circuit is broken but the bolt 23 is held out of action in order to permit the car to be moved, but starting of the engine is prevented.
Patent GB-752299-A (GB)
Title: Method of forming hollow plastic articles
IPC: B29C49/28
Filed: 1954-08-30
Abstract: 752,299. Blow-moulding hollow plastic articles. OWENS-ILLINOIS GLASS CO. Aug. 30, 1954 [Sept. 21, 1953], No. 25102/54. Class 87(2) A hollow plastic article is made by severing a length of plastic tubing from a continuous source of supply, the length of tubing being in such a state of plasticity as to permit expansion and setting, transferring the length to a mould, and expanding it in the mould by fluid pressure. The length of tubing may be cut from a preformed longer length of tubing that is fed downwardly in a manner similar to downward extrusion, but as shown in the Figures it is cut from a continuous freshly-extruded tube. Figs. 1, 3 and 6 illustrate a method in which a shear blade 15 pivotally mounted on a carrier 16 moves to the right, Fig. 1, to cut a length 10 of tubing freshly-extruded from a nozzle 11. The blade co-operates with an arm 17 to carry the severed length 10 to a two-part mould 12 in which the length is expanded by a blowing nozzle 14. The blade 15 then retracts leftward, as shown in Fig. 6, and cuts off from the extrusion nozzle 11 another length that has been extruded, and the blade co-operates with another arm 18 to transfer the second cut length to a second mould 13 where it is blown by a nozzle 14<1>. A guide 19 on carrier 16 guides the cut lengths. In a modification (Figs. 7 and 8, not shown) the nozzle 11 extrudes two tubes simultaneously and the moulds 12, 13 are dual moulds.
Patent GB-1492237-A (GB)
Title: Axle shaft and road wheel hub assembly
IPC: F16C33/66
Filed: 1976-06-17
Abstract: 1492237 Bearings NISSAN MOTOR CO Ltd 17 June 1976 [30 June 1975] 25104/76 Heading F2A An axle shaft and road wheel hub assembly comprises a road wheel hub 12 having a bore 14 therethrough, an axle shaft 16 having an end portion 18 disposed within the bore, two bearings 20, 22 disposed between the inner surface of the bore and the shaft end portion, said bearings being axially spaced from each other to define therebetween a chamber 24, and two annular walls 40, 42 disposed within the chamber adjacent the bearings, respectively, each wall extending inwardly from the inner surface of the bore towards the shaft end portion, the walls preventing grease around the bearings from leaking axially towards the chamber. Each wall may be provided with an annular groove facing the associated bearing, the groove functioning to direct grease from the bearing back towards the bearing. The groove may have a rounded or flat bottom surface, and may be radially inwardly open. In a further embodiment, the walls are not integral with the hub but are formed on the ends of a generally cylindrical member of rubber which is received within the bore.
Patent GB-1090250-A (GB)
Title: Vibratory straightening machines
IPC: B21F1/02
Filed: 1965-06-15
Abstract: 1,090,250. Straightening. TURNER & SEYMOUR MANUFACTURING CO. June 15, 1965 [Dec. 21, 1964], No. 25220/65. Heading B3E. Apparatus for straightening elongated workpieces comprises at least three work-holders positioned in series along a longitudinal axis and adapted to engage a workpiece arranged with its centre line in general alignment with said axis, means to vibrate at least one of the work-holders transversely of the said axis, and means for varying the magnitude of said workholder movement between a maximum vibratory movement and a minimum vibratory movement. An elongated workpiece to be straightened is positioned in a channel, whose major cross-sectional dimension is vertical, defined by alternately arranged work-holders 16, 18. The work-holders 16 are fixed and the work-holders 18 are vibrated transversely of the workpiece by levers 42 pivoted on fixed axes 72, Fig. 5, and rocked by a motor driven eccentric shaft 118. The eccentric 118 rocks a lever 74 pivoted at 76, the lever 74 in turn rocking the levers 42. The pivot 76 is moved relatively to the eccentric and lever 42 so as to vary the amplitude of the vibration given to the work-holders 18. The movement of the pivot 76 is effected by a pneumatically actuated piston rod 84 the stroke of which is reversed by a switch 87. After the amplitude of the vibrations has been reduced to a minimum with the workpiece in the vertical channel, the workpiece is positioned in a second channel, defined by the opposed work-holders, whose major cross-sectional axis is horizontal and the straightening operation is repeated.