baber/WOPTO huggingface dataset:
Patent GB-887712-A (GB)
Title: Improvements in nuclear fuel sheaths or cans and in nuclear reactors of the kind including fuel enclosed in cans
Inventor: DUMPLETON OWEN WALTER
IPC: G21C3/08
Filed: 1957-03-11
Abstract: 887,712. Nuclear fuel elements. BABCOCK & WILCOX Ltd. March 11, 1958 [March 11, 1957], No. 7890/57. Class 39(4) A sheath or can for a nuclear fuel element has an even number of groups of fins 2 arranged so that coolant passes between the fins of each of two adjacent groups towards channel 3 separating the groups. As shown, the fins are helical but of opposite hand in adjacent groups. When the fuel element is arranged in a moderator and coolant flows over its surface, pressure increases in the channels 3 where the two streams of coolant meet and decreases in the other channels. Circulation of coolant is thus promoted within the annular space between the moderator wall and the edges of the fins.
Patent GB-679755-A (GB)
Title: Improvements in electric discharge lamps
IPC: H01J61/82
Filed: 1950-03-29
Abstract: 679,755. Metal-vapour lamps. BRITISH THOMSON-HOUSTON CO., Ltd., and BEESON, E. J. G. March 20, 1951 [March 29, 1950], No. 7893/50. Class 39 (i). The quantity of mercury in a discharge lamp is adjusted so that when it is completely vaporized during operation, the voltage gradient in the arc lies between 1.25 and 2.5 volts/cm., the arc loading lying between 5 and 25 watts/cm. It is stated that under these conditions the maximum energy of the 4358 Š line is produced with a minimum of background radiation. In an example, the lamp envelope is 190 mm. long and 34 mm. in diameter, and the electrodes, of the type rendered thermionic by the discharge, are 160 mm. apart; the quantity of mercury is about 45 milligrams. The discharge may be started by heating the lamp.
Patent GB-791099-A (GB)
Title: High pressure cylinder
Inventor: PLATEN BALTZAR VON
IPC: B01J3/04
Filed: 1956-03-14
Abstract: <PICT:0791099/III/1> <PICT:0791099/III/2> <PICT:0791099/III/3> A cylinder adapted to withstand high internal pressure comprising a wire or strip-wound pipe and a flange at both ends of the pipe is characterized in that the wire or strip is wound on the pipe in two or more groups of winding layers, all winding layers within a group having the same sense of winding, whereas the winding layers of an adjacent group have the opposite sense of winding. End flanges 3 of a pipe 1 are formed with slots 4 which engage radial projections 2 of the pipe to allow the pipe to expand or contract within the flanges. A torque-transmitting wall 7 and bolts 6 join the flanges 3.  Steel strip 8, secured at its end in a slot in a slot in a pin 5b on a flange 3, is wound round the pipe 1 from this flange to the other. Here it is turned 180 degrees around one of a number of short pins 5 projecting inwardly from the flanges and wound around the pipe back to the other flange to be turned 180 degrees around a pin 5 on this flange before winding back on the pipe and so on until a predetermined number of layers have been wound all in the same sense. The strip is then turned 90 degrees about a pin 5, wound round the pipe, turned 180 degrees round a pin 5, wound back and so on until a predetermined number of further layers have been wound all in the same sense, opposite to that of the first group of layers.  Joints in the strip are located between the outer surface of the strip wound on the pipe and a pin 5.  In a modification, Fig. 5, a ring 12 rotatable in the flange 3 has radial slots engaged by the projections 2 on the pipe 1.  Specification 775,792 is referred to.
Patent GB-730712-A (GB)
Title: Production of nodular gray cast iron
IPC: C22C37/04
Filed: 1951-04-05
Abstract: The free graphite in grey cast iron is converted into nodular form by addition to the iron of a magnesium-cerium alloy containing not more than 73 per cent of magnesium, the balance being cerium.  Preferably the magnesium content of the alloy is not more than 55 per cent and a more restricted range of magnesium has a minimum of 43 per cent. Reference has been directed by the Comptroller to Specification 630,070.
Patent GB-663931-A (GB)
Title: Creped fibrous products and method of making same
IPC: D04H1/54
Filed: 1949-03-23
Abstract: A method of handling a package of filamentary material, e.g regenerated cellulose rayon from viscose, comprises wrapping the package with a thin fibrous sheet comprising from 7 to 70 per cent of saponifiable cellulose fibres in combination with fibres of a material which is not affected by aqueous saponifying media, the fibres being bonded together in a condition of potential unbalance, whereby washing and drying of the wrapped package, after at least partial saponification of the ester fibres in the wrapper while on the package, causes shrinkage of the wrapper thereon.  The saponifying agent may be an aqueous solution of an organic or inorganic acid, or of a caustic alkali or alkali metal salt of a weak acid, or of sodium sulphide; or of ammonia or a lower alkylene diamine such as methylene or ethylene diamine.  The wrapped package is subjected to treatments including a saponifying bath for the cellulose ester fibres.  This may be combined with a de-sulphiding bath, which may consist of an aqueous solution of sodium sulphide and sodium carbonate.  On subsequent washing and drying, the wrapper material crepes and shrinks with the contents.
Patent GB-1379099-A (GB)
Title: Brake shoe construction namely for disc brakes for motor vehicles
IPC: F16D65/095
Filed: 1972-02-21
Abstract: 1379099 Brakes FRANCAISE DU FERODO SA 21 Feb 1972 [23 Feb 1971] 7978/72 Heading F2E A disc-brake pad comprises a friction pad 12 mounted on a support plate 10 which is located by a projecting abutment stud 20 at its centre and a pair of counter-abutments 25A, 25B, both projecting from its rear face to prevent radial movement of the pad. The pad slides at hooks 18A, 18B on a fixed guide 27 against which the counter-abutments 25A, 26B react at suitable flat top surfaces 26A, 26B. A transfer ring 29 urges the pad axially into braking engagement with the disc, and is also resiliently biased upwardly against the underside of stud 20. The counter abutments may be bent out from the plate as simple hooks (Figs. 6 and 7, not shown).
Patent GB-1139765-A (GB)
Title: Improvements in or relating to a device for clamping articles such as boxes or bins
IPC: B66F9/19
Filed: 1966-02-23
Abstract: 1,139,765. Tipping attachments for hoisting appliances; tipping containers. E. ASDAHL. 23 Feb., 1966, No. 8022/66. Headings B8E and B8H. A device for carrying, hoisting and tipping to unload, a bin 20 comprises a fork 4 mounted on a support 6 turnable about a horizontal stationary shaft 42, and a clamp 11 pivotally mounted on supports 10 extending up from the support 6 and which is pressed downwards against the top edge of the bin when the fork is turned in order to unload the bin. The clamp 11, of U-shape, is sprung or weighted to move it away from the bin for the placing on and removing of bins from the fork 4. A cable 28 attached to an eye 13 at each end of the clamp 11 passes through an eye 14 on each side of the rotatable support 5, 6 and through a bore in a flange 27 on the stationary shaft 42. Upon rotation of the fork 4, the cable 28 rests on the perimeter of the flange 27 whereby it is tensioned to pull the clamp 11 down on to the bin 20. A ratchet disc 8 on a bush 7 secured to the rotatable support 6 is engaged by a sprung latch 9 mounted on stationary framework 19. The latter framework is pivoted at 2, 3 to a parallel linkage, Fig. 4 (not shown), which is hydraulically operated to hoist the framework 19 and the bin 20. The latch 9 is released and the framework 6 rotated relative to the framework 19, by a cable 16 attached at one end to the latch, passing around a pulley block 17, through an eye 15 fixed on the framework 19 and having the other end fixed to the framework 6. The pulley 17 is adjustably connected to the linkage such that with the hoisting movement thereof, the cable 16 is tensioned causing the latch 9 to open and the support 6 to be rotated relative to the support 19 whereby the bin 20 is emptied. In another embodiment the support 6 is rotated by an hydraulic ram. In the embodiment of Figs. 5, 6 (not shown), the clamp (11) is pulled down on to the bin (20) spring loaded rod pivoted eccentrically to the stationary flange (27).
Patent GB-319030-A (GB)
Title: Improvements in or relating to the manufacture of aliphatic esters and acids
IPC: C07C51/12
Filed: 1928-03-16
Abstract: 319,030. Dreyfus, H. March 16, 1928. Acetic acid; methyl acetate.-Acetic acid is obtained, in the free state or as methyl ester, by the reaction of dimethyl ether and carbon monoxide in the presence of alkali alcoholates or alkali formates as catalysts, or in the absence of catalysts. Temperatures of 200-450‹ C. and pressures of 50-300 atmospheres are preferably employed. If sufficient water vapour is present in the reaction mixture, acetic acid preponderates in the product, while in the presence of little or no water methyl acetate is the main product. The methyl acetate may be saponified to acetic acid by the processes described in Specifications 283,989 and 284,582, and the dimethyl ether resulting mav be returned to the main process. Propionic acid, ethyl propionate, and other aliphatic acids and esters may be prepared similarly from the corresponding ethers.
Patent GB-1215454-A (GB)
Title: Improvements in or relating to measuring circuits
Inventor: STEED KENNETH CYRIL
IPC: G01R17/16
Filed: 1967-02-20
Abstract: 1,215,454. Voltage measurement. NATIONAL RESEARCH DEVELOPMENT CORP. May 14, 1968 [Feb. 20, 1967], No.8071/67. Headings G1A and G1U. A differential measuring circuit wherein difficulties normally experienced in carrying out initial balancing are overcome incorporates a long tailed pair difference amplifier with two halves V1, V2, each with an input at the grid of V1, V2 respectively, each input being connected to a common input terminal T via a switch pair which in one setting (2) connects T via negligibly short time constant circuits to both halves of the amplifier respectively while in another (3) connects a circuit between T and one amplifier half whose time constant is relatively long compared with the time during which a measurement is to be carried out. The circuit is initially balanced by grounding both grids (switch position 1) and adjusting the anode load resistor R4 until the meter M connected directly between the two anodes reads zero. The switch is then set to position 2 and any necessary readjustment made, both halves of the circuit following short term variations in the potential at T. Thereafter the switch is set to position 3 so that the connection between T and the grid of V2 is via a circuit incorporating the long time constant circuit R6 C1. This half of the circuit will not follow rapid changes at T, so that the meter M will directly indicate these changes. The circuit is for use in a prothrombin meter, wherein an increase in turbidity in a blood sample after adding reagent is detected by a photo-cell PC responding to light passing through the sample. The circuit is balanced, the reagent added and a timer started. When the reading on the meter reaches a given value a contact is automatically operated and the timer stopped. The prothrombin time is thus determined.
Patent GB-326024-A (GB)
Title: Improvements in or relating to water-tube steam boilers
IPC: F22B21/18
Filed: 1929-03-12
Abstract: 326,024. White, A. E., (Kidwell Boiler Co.). March 12, 1929. Watter-tube boilers; heating by indirect contact of hot waste gases.- Some of the tubes of a boiler having banks of tubes connected to drums are heated by hot waste gases directed through gas passages separate, from the passages through which the gases from a powdered fuel or other furnace flow over other tubes. A boiler having tube. banks 18 - - 20 connecting drums 14 - 16 is provided with a horizontal baffle 24 extending over the rear of the tube bank 18 and with vertical baffles 25, 26 directing the gases from the furnace 11 upwards and downwards through the tube banks. Hot waste gases are admitted into separate gas passages 28 containing some of the tubes of the banks 19, 20 through openings 31 in the side walls of the boiler. The inner sides and bottom of the gas passages 28 are formed by longitudinal vertical partitions 29 and plates 30 extending above the side tubes of the bank 18. The gases escape, from the passages 28 through separate openings in the rear wall. Air may be supplied to the waste gases through a transverse chamber formed by the baffles 24, 25 and walls 39, 40. The air is admitted through side openings 37 and is discharged into the waste, gas passages through openings 36 in the baffle 25.
Patent GB-472318-A (GB)
Title: Improvements in or relating to aircraft propulsion
IPC: B64D35/04
Filed: 1936-03-18
Abstract: 472,318. Propelling aircraft. MAINA, J. March 18, 1936, No. 8108. [Class 4] In means for propelling aircraft which includes two oppositely-driven coaxial airscrews mounted on shafts p, b, the shafts are connected by a reverted or differential gear r, s, u, the intermediate gear or gears u being carried by a spider t which is located in position on and centred by the central shaft b. As shown, the engines comprise parallel crankshafts which may be of the form described in Specification 450,846, [Group XXIV], and the engines may be constructed as described in Specifications 368,263 and 447,266, [both in Group XXVII]. The shaft b is driven at the end remote from the airscrews through a resilient element comprising resilient radialblades d secured to the shaft and engaging at their outer ends slotted bushes e.
Patent GB-720845-A (GB)
Title: Halophenyldichloromethylpropenes
IPC: C07C25/24
Filed: 1953-03-24
Abstract: The invention comprises 3-(4-chlorophenyl)-1 : 1 - dichloro - 2 - methyl - 1 - propene and 3 - (4 - bromophenyl) - 1 : 1 - dichloro - 2 - methyl - 1-propene, prepared by reacting chlorobenzene or bromobenzene with 2-methyl-1 : 1 : 3-trichloro-1-propene in the presence of aluminium chloride as a catalyst.  Examples are given.ALSO:Insecticides comprise 3-(4-chlorophenyl)-1 : 1-dichloro-2-methyl-1-propene and/or 3-(4-bromophenyl)-1 : 1-dichloro-2-methyl-1-propene as toxic ingredients, admixed for example with xylene and a non-ionic emulsifying agent.
Patent GB-786899-A (GB)
Title: Improvements in door locking means
Inventor: HUSTWIT ALBERT BEECROFT
IPC: F16J13/24
Filed: 1955-03-21
Abstract: 786,899. Multiple fastenings. THACKRAY, Ltd., C. F. March 21, 1956 [March 21, 1955], No. 8155/55. Class 44 [Also in Group XVIII] Relates to locking mechanism, for sealed vessel doors, of the type whereing toggle bars are pivotally carried by carrier means on axially movable operating means and wherein such bars extend to points about the rim of the door for securing the latter in a sealed position. According to the invention, the mechanism comprises a spindle mounted through the toggle bar operating mechanism, a locking catch adapted to be operated by the spindle to lock the operating mechanism in its adjusted operated position, and pressure operated means on the inside of the door arranged to automatically move the spindle axially and operate the catch when the vessel is pressurized. As shown, toggle levers 8, pivoted to a drum 7 are adapted to releasably secure a door 4 of a pressure vessel by axial movement of the drum on a shaft 1 attached to the door. The drum 7 is moved by means of a handwheel 10 rotatable on a screwed extension 5 of the shaft 1 and is caused to have a part rotation by means of a keyway 17 on the shaft 1 and a co-operating pin 16 on a sleeve 9 integral with the drum. A spindle 18 extends through the shaft 1 and is secured to a diaphragm housing 3 on the door 4 and in communication with the pressure fluid. A catch 25 is pivoted on the spindle 18 within a slot 26 formed in the end of the extension 5 the arrangement being such that in the sealed position of the lever 4, in which the handwheel 10 is advanced to the position shown in Fig. 2, the diaphragm is flexed by the pressure within the vessel to move the spindle outwardly of the cover and to pivot the catch 25 into a notch 28 in the hub of the wheel, to prevent the latter being rotated in a direction to release the toggle bars 8. The catch is released when the pressure is relieved, by a return spring 24. Flexure of the diaphragm is limited by a flange 23 of a sleeve 22.
Patent GB-416726-A (GB)
Title: Improvements in or connected with indicators
IPC: G09F11/02
Filed: 1933-03-17
Abstract: 416,726. Registering and displaying apparatus. LIGHTNING AUTOMATIC TOTALISATOR CO., Ltd., and ROTHSCHILD, L. V., 475, Oxford Street, London. March 17, 1933, No. 8173. [Class 106(i).] In an indicator for displaying numbers, letters, or other devices, for use at athletic meetings, in connection with totalizators or as a scoreboard for outdoor games such as cricket &c., the indicia are formed on both sides of a number of slats pivotally mounted between two endless chains, cords, or the like, and when a slat moves from its exhibiting position it is turned through 180‹ relative to its mounting to exhibit its other face on again reaching its exhibiting position. The indicator may be operated manually or mechanically. The figures show two series of slats 7 rotatably mounted at 8 between endless chains 6, 6<a> for indicating the units and tens denominations of a number through a viewing aperture 11. When a slat moves from its exhibiting position, it engages a stop 13 and is turned thereby relative to its mounting as shown in Fig. 4, through 180‹, so that with only five slats, marked on each side, the numbers 0, 1-9 may be displayed successively during two revolutions of the chains. To ensure a slat turning only through 180‹, at a time a check stop 17 is provided, and the slat bearing elements 9, Fig. 5, which are square sectioned, engage springs 10 secured to the slats 7 which are thereby caused to snap into position during rotation. The chains are mounted on sprocket wheels and driven by shafts 1 geared at 14, 15 to sleeves 16<a>, one for each denomination. When used with a totalizator, such as described in Specification 316,392, [Class 106 (i)], each sleeve 16<a> carries rigid therewith a wheel 24 which is rotated by a constantly rotating wheel 25, when a ball, released to register a bet, falls down a tube 26 between the two wheels. Transfer between denominations is effected as described in Specification 342,078. A pin wheel 19, as shown in Fig. 9 is mounted on the sleeve 16<a>, and coacts with a sprung detent 18 to ensure the correct amount of rotation of the sleeve at each actuation of wheel 24. Alternatively the pin wheel 19 may be fitted on a separate shaft and mesh with a wheel 31, Fig. 9, on the shaft 1. Two or more series of slats 7, may be used for each denominational indication. Thus, in Fig. 7, the wheel 24 drives through gearing 27, 28, 28<a> and chains 23, 23<a>, three shafts 1, driving three series of slats 7 which display one figure. The indicators may, alternatively, be set by hand or in any other way.
Patent GB-253633-A (GB)
Title: Improvements in and relating to conveying mechanism
IPC: A63G7/00
Filed: 1925-03-26
Abstract: 253,633. Cannon, C. S. March 26, 1925. Roller-way conveyers and elevators.-In a conveyer in which the rollers are driven positively, a load is prevented from running backwards on upgrades if the drive fails by preventing certain rollers from turning backwards. An arm 6 pivotally mounted on the axle 7 of .one pair of rollers 1 has a slotted end which embraces a ratchet wheel 8 fixed on the axle 9 of the next pair of rollers. The ratchet teeth do not prevent the forward rotation of the upper rollers, but if the sprocket chain connecting the axles 7, 9 breaks while a load is resting mainly on the upper rollers, the teeth of the ratchet engage the arm 6 and backward rotation of the upper rollers is prevented. If the load is of such length that it rests on n pairs of rollers, the safety gear only need be fitted to every nth pair of rollers.
Patent GB-935192-A (GB)
Title: Improvements in or relating to stepless change-speed gears
Inventor: KANO SABURO
IPC: F16H13/10
Filed: 1960-03-08
Abstract: 935,192. Variable-speed friction gear. ISHIKAWAJIMA JUKOGYO KABUSHIKI KAISHA. March 8, 1960, No. 8204/60. Class 80 (2). A change-speed gear of the interpenetrating disc type comprises an input, or output, shaft 1 driving counter-shafts 33a, 33b via idlers 35b, 35a; coned friction discs 32 fixed on the shafts 33a, 33b being engageable by pairs of friction wheels 8b, 8c, 8d splined to an output, or input, shaft 5. Each pair of friction wheels is formed with a chamber 11 supplied with oil by a pump (not shown) at a pressure varied by means of a release valve (not shown), and supplied through passages 26 in the shaft 5 and tubes 29a . . . 29d. Each friction disc 32 is engaged on both its surfaces to equalize the axial loading, one end disc of each shaft 33a, 33b being engaged by a disc 59 connected by tie rods to a member 52 associated with a wheel 8a forming a pressure chamber 11a therewith, the wheel 8a engaging the other end disc, and part 52 in its extreme right-hand position engaging a direct-drive friction clutch 55. In this extreme direct-drive position the wheel pairs 8b . . . 8d are disengaged from the friction discs. In the position giving maximum interpenetration of the discs and wheels a gear 49 on each countershaft meshes teeth 50 formed on the wheel 8a to give the lowest gear ratio. The countershafts 33a, 33b are carried by levers 36, 37 pivoted at 47, 48 and interconnected by a link 38. The position of the countershafts is adjusted by a hand lever 70 pivoted at 47 and fast with the lever 36, the lever 70 being retained in selected positions by a pawl 71. A piston 64 is connected to the lever 36 and is loaded by liquid at the same pressure as that in the chambers 11 to counteract the radial loading on the countershafts due to the friction wheels. Bars 77 fast with the levers 36, 37 bear on the shafts 33a, 33b between the various coned discs 32 to prevent buckling of the countershafts. In a simplified modification (Figs. 1-3, not shown) the end wheels 59, 8a, the direct-drive clutch and the gear 49 for non-friction low gear, and one of the idlers in each train between the input shaft and the countershaft are dispensed with. The levers 36, 37 are carried by a modified arrangement, their adjustment being effected by a worm and toothed sector, no provision is made for counterbalancing radial forces on the countershafts, and the bearing bars 77 are omitted. Specifications 935,193 and 935,194 are referred to.