baber/WOPTO huggingface dataset:
Patent GB-868920-A (GB)
Title: Piston valve
IPC: F16K3/36
Filed: 1959-09-08
Abstract: 868,920. Valves. SHAFER, H. J. Sept. 8, 1959 [Nov. 28, 1958], No. 30600/59. Class 135. A piston valve has aligned cylinder inlet and outlet ports 11, 12, Fig. 3, controlled by a piston 20 with a through port 22, resilient seal rings 21 around its ends, longitudinal lubricant grooves 40A straddling the outlet in closed position and split at 25, 26 longitudinally intermediate its ends transversely to the through port to compensate for distortion of the cylinder due to expansion or contraction. The piston is moved between open, Fig. 3, and closed position, Fig. 6, by pressure applied to its ends via passages 18. Lubricant is supplied in all positions of the piston from passage 43A to a longitudinal groove, to a piston groove 41A connecting the upper ends of the longitudinal grooves 40A and to a cylinder groove 42A coming opposite the lower ends of the longitudinal grooves in the valve closed position. The lubricant also passes through a piston passage 48A to a piston groove 49A at the lower end of the piston, whereby the cylinder below the outlet is lubricated. In the closed position the outlet, or both outlet and inlet, is surrounded by a lubricant seal and in opening, none of the seal rings and grooves passes over the outlet or inlet openings so that lubricant cannot be blown out of the grooves. By turning a stem 31, which acts as an indicator of the valve position, a further stem 29 turns a wedge screw 28 to force apart the halves on either side of the split and increase the sealing or lock the valve in one position. The piston is prevented from turning by stud 23 entering a piston slot 24.
Patent GB-1410100-A (GB)
Title: Dead line indicator
IPC: G01R19/145
Filed: 1973-06-27
Abstract: 1410100 Voltage detector TROLEX PRODUCTS Ltd 4 March 1974 [27 June 1973] 30693/73 Heading G1U A circuit for an intrinsically safe detector of the presence of a voltage includes a button 20, Fig. 3, which is depressed to power the circuit, and the circuit is such that immediately the button is pressed a light emitting diode is energized until a capacitor C4 is charged, after which the light emitting diode only becomes energized when a sensor 28 is brought close to a voltage source. The entire circuit, and sensor 28, are mounted inside a closed insulating housing, Fig. 1 (not shown), only the button and the light emitting diode being accessible from outside.
Patent GB-371319-A (GB)
Title: Friction locking device
IPC: F16D41/22
Filed: 1930-10-14
Abstract: 371,319. Driving aircraft-propellers. SOC. ANON. FRANCAISE DU FERODO, 2, Rue de Chateaudun, Paris. Oct. 14, 1930, No. 30704. Convention 'date, Nov. 26, 1929. Void [Published under Sect. 91 of the Acts]. [Class 4.] A frictional freewheel clutch comprises one friction element coacting with a screw-threaded or helically-toothed shaft member and acted on by means for holding it constantly in light contact with the second friction element. As applied to driving an aeroplane propeller, the hub 10, Fig. 3, is connected by a flexible member 9 to the friction cone 5, an abutment 3 being rigid with a sleeve 2 on the shaft 1 and the coacting cone 12 secured to a spring- pressed boss 11 engaging teeth on the sleeve. The teeth, as shown in Fig. 5, are helical on the driving faces only, being axial on the other faces to reduce the engaging pressure required when overrunning is to be prevented, as when the engine is to be started by the propeller. The means for preventing overrunning comprises wedge-shaped arcuate shoes 14, 15, Fig. 4, pivoted on one or two fixed pins 16, 17, guided by forks 27, 28, and connected by links 19, 20 to a spring-returned pull rod 25, the shoes, which may be antifriction lined, acting by contraction into the groove between the abutment 4 for the clutch-spring 13 and a conical surface of the boss 11. To facilitate hand-starting, the rod 25 may be lockable in the clutch-engaging position. The conical friction elements may be replaced by discs.
Patent GB-839738-A (GB)
Title: Preparation of methylaromatic dicarboxylic acids
IPC: C07C51/265
Filed: 1958-09-25
Abstract: A process for preparing methyl benzene dicarboxylic acids comprises providing a solution of a polymethylbenzene containing at least three methyl substituents, of which at least two are ortho to each other, in a lower fatty acid having 2 to 4 carbon atoms, said solution containing 5 to 50 parts by weight of fatty acid per part of polymethyl benzene, said solution also containing 1% to about 9% of water based on the weight of the solution and at least 1% by weight based on the weight of said fatty acid of a ketone having at least one methyl group attached to the carbon of the carbonyl group and from 0.1 to 1% by weight based on the weight of said fatty acid of a cobalt salt of a lower fatty acid containing 2 to 4 carbon atoms, and contacting said solution with an oxygen-containing gas at a partial pressure of oxygen of about 100 to 1000 pounds per square inch at a temperature of about 100 DEG  C. to 150 DEG  C., and continuing the reaction for a period sufficient to convert at least about 30% of the starting material to dibasic acid substantially free of tribasic acid.  In the examples pseudocumene is oxidized to a mixture of methyl terephthalic and 4-methylisophthalic acids and durene is oxidized to a mixture of 2,5-dimethyl terephthalic and 4,6-dimethylisophthalic acids using glacial acetic acid as solvent, methyl ethyl ketone as promoter and cobalt acetate as catalyst.  In the durene oxidation the dibasic products are separated from the monobasic products by esterification, removal of the monobasic esters by distillation, and saponification to recover the dibasic acids. Specification 833,175 is referred to.
Patent GB-1445787-A (GB)
Title: Woodwool slab receiver digital detectors and methods of operation of such detectors
IPC: E04C2/284
Filed: 1974-07-11
Abstract: 1445787 Laminates TORVALE HOLDINGS Ltd 30 June 1975 [11 July 1974] 30714/74 Heading B5N A composite slab having improved acoustic and thermal insulation and mechanical properties is produced by arranging in fixed spaced apart parallel relationship a pair of woodwool slabs made from long wood fibres which are coated with cement and bound together under pressure, each having at least one of its faces in the untreated state without any surface finish, with the untreated faces facing directly towards each other, injecting into the space between the slabs a foaming material to produce a rigid foam of synthetic plastics material, e.g. polyurethane or isocyanurate or polystyrene, in the space, confining the foam so that it does not escape beyond the boundary edges of the slabs and continuing to inject the foaming material until the foam has expanded to penetrate the spaces in the mesh of wood fibres forming the untreated faces, the foaming material being caused to set to form a composite slab with the rigidified foam mechanically keyed with the woodwool slabs. The composite slab may be produced using an apparatus comprising a rotary work-table arranged in a horizontal plane having means for indexing it step by step through a number of stations, the table being provided with a plurality of jigs each of which receives two woodwool panels and locates them fixedly in spaced apart parallel relationship, the jigs having means defining confining walls to act as a barrier at the open spaces around the edges of the panels and the apparatus further comprising a machine to inject a foaming material into the space between the woodwool slabs held by a jig at one or more of the work stations. The outer faces of one or both of the woodwool slabs may be provided with a surface finish, e.g. a cement or plaster screed, bituminous material or asbestos or other roofing felt.
Patent GB-1306951-A (GB)
Title: Reclaiming absorption solutions
IPC: C10K1/12
Filed: 1970-06-25
Abstract: 1306951 Gas absorption solutions, regeneration RALPH M PARSONS CO 25 June 1970 [27 Aug 1969] 30807/70 Heading B1B A absorption solution, such as an aqueous solution of an ethanolamine, glycol or N- methyl-2-pyrollidone, which has been used to remove impurities from a gas stream, is regenerated by boiling it in a vessel heated by steam-heater 16, passing the vapours through temperature-controlled condenser 18 to condense a solution of predetermined concentration (i.e. the regenerated solution), collecting the condensate in zone 22 from which it is withdrawn from the system, passing the uncondensed vapour to condenser 26 where it is totally condensed, and passing the condensate from condenser 26 to the boiling vessel. Sludge is periodically discharged through valve 27. Condenser 18 may be cooled by boiler feed water; the temperature being controlled by regulating the pressure at which the water will evaporate. Pressure regulator 28 is used in combination with level-control 30 which determines when more water is to be supplied through modulated valve 32. In an example, a crude 25 per cent solution of diethanolamine, from which gases have been removed by steam-stripping, is fed continuously to the boiling vessel which contains concentrated diethanolamine solution (70 to 98%). The condenser 18 is maintained at about 102‹C; and purified 25% diethanolamine solution is obtained as product.
Patent GB-1416962-A (GB)
Title: Record-player
IPC: G11B19/10
Filed: 1973-06-28
Abstract: 1416962 Gramophone PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 28 June 1973 [1 July 1972] 30811/73 Heading G5R When a record is placed on turntable 1 it depresses pin 12 thereby lifting a contact spring member 9 from shorting engagement with a pair of slip-rings mounted on a plate 5 fixed to the turntable shaft bearing block 3 whereby a drive motor for the turntable is energized.
Patent GB-152888-A (GB)
Title: Improvements in and relating to buildings having a concrete framework
IPC: E04B2/56
Filed: 1919-12-11
Abstract: 152,888. Hale, W. E., and Hale, L. H. Dec. 11, 1919. Double walls; stud and slab walls. - Hollow walls are built of a plurality of pre-cast concrete pillars 1 which engage pre-cast inner and outer slabs 6, the pillars being of double-dovetail-section, and the slabs having their ends shaped to abut on to them and recessed to receive the grouting 7. The framework units may be reinforced by vertical reinforcement and loops 9, and the slabs with reinforcement 12 the ends of which are inturned in the grouting. Binding reinforcement 10 may also be used to bind the grouting on such side of the framework units.
Patent GB-1497669-A (GB)
Title: Chloride detection
IPC: G01N27/416
Filed: 1975-07-10
Abstract: 1497669 Chloride ion determination CENTRAL ELECTRICITY GENERATING BOARD 10 July 1975 [12 July 1974] 31046/74 Heading G1N Apparatus for potentiometric determination of chloride ions comprises a purified water source, a standard chloride solution source and at least one test sample source, a selector for sequentially and automatically selecting a stream from one of the sources, means for mixing an acidic buffer with the stream and means for feeding the buffered stream at a predetermined flow-rate to a potentiometric cell maintained at constant temperature. The selector 24 is sequentially stepped at about 20 minute intervals and selects from test sources, inlets 25, via constant head devices 45, chloride standard solution 33 and purified water, via line 26, the purified water being derived from low chloride water in 41 via a mixed bed ion exchange resin column 36 and a conductivity cell 37 and having a conductivity less than 0À1 Á # cm<SP>-1</SP>. Pump 28 draws the selected stream and buffer solution, from 29, at desired rates, mixes the streams at 30, debubbles them at 31 and passes them to heat insulated and light-proof box 10 containing the conductivity cell. The box is maintained at constant temperature (preferably 10‹C) by circulating fluid from circulator 18 and the liquid passes through heat exchanger 23 and two other heat exchangers 21, one on each side of the measuring cell, before measurement. The measuring electrodes comprise Ag/Ag/AgCl and Hg/Hg 2 SO 4  + Na 2 SO 4 . Debris and interfering ions may be removed from the solution by filtering and by an ion exchange column respectively.
Patent GB-940458-A (GB)
Title: Improvements in or relating to thermoelectric devices
Inventor: CONNELL LESLIE JAMES CAMBRIDGE
IPC: H01L35/34
Filed: 1960-09-09
Abstract: 940,458. Thermoelectric devices. GENERAL ELECTRIC CO. Ltd. Aug. 28, 1961 [Sept. 9, 1960], No. 31135/60. Heading H1K. In a method of making a thermoelectric device of the kind comprising an array of thermoelectric elements 1 connected by conductors 2 to provide a set of hot junctions and a set of cold junctions disposed respectively on opposite sides of the array, each set of junctions being in thermal contact with, but electrically insulated from, a plate-like heat exchange member 3, the conductors 2 are first provided on one face of each of the heat exchange members, the conductors thus being relatively predisposed before they are connected to the thermoelectric elements 1. The electrically-insulating layers 4 may be of resin or of plastic tape having adhesive on both sides or may be provided by anodizing the inner surfaces of the heat exchange members 3. The conductors 2 may be metal straps or may be formed by removing metal from a metal plate. The completed assembly may be potted in a heat-insulating material.
Patent GB-742910-A (GB)
Title: New or improved apparatus for testing the accuracy of gear teeth
Inventor: WATERWORTH NORMAN
IPC: G01B5/20
Filed: 1953-11-11
Abstract: 742,910. Gauging gear-teeth. BROWN & SONS (HUDDERSFIELD), Ltd., D. Oct. 29, 1954 [Nov. 11, 1953], No. 31200/53. Class 106 (2). Apparatus for testing the tooth profile of an involute gear of the kind comprising a straightedge c, Fig. 2, and a gauging member k aligned therewith is characterized in that a column a carrying the straight-edge c and the gauge k is slidable on guides on a part b located on a gear cutting or finishing machine, e.g. by means of the bracket shown in Fig. 2a so as to be pivotal about an axis parallel to that of the gear being tested into a position in which the straight-edge makes frictional driving contact with a base-disc y associated with the gear whilst the latter is still in position on the machine. As shown the gauge k and its associated indicating or recording mechanism i is mounted on a sub-carriage e traversable in a direction parallel to the gear axis upon guides h mounted on the column a. As shown, the straight edge is maintained in frictional contact with the base-disc by virtue of the weight of the apparatus, but where the apparatus is used to test a gear whose axis is vertical a tension wire or rod may be provided to maintain this frictional contact.
Patent GB-183088-A (GB)
Title: Improvements in resilient tyres for the wheels of road vehicles
IPC: B29D30/04
Filed: 1921-11-22
Abstract: 183,088. Sinks, J. W. Nov. 22,1921. Non-metallic elastic bodies and cores.-A tyre comprises an outer cover a and inner tube b of ordinary construction, the inner tube b being packed with compressed rubber sponge c or like resilient material.
Patent GB-1534666-A (GB)
Title: Isoindolene pigments and process for their manufacture
IPC: C09B57/04
Filed: 1977-07-26
Abstract: 1534666 Isoindolinine pigments CIBA-GEIGY AG 26 July 1977 [27 July 1976] 31223/77 Heading C4P  The invention comprises pigments of the general formula wherein A is a carbocyclic- or heterocyclicaromatic radical, Q is oxygen or an imino group, E is CN, acetyl, a group-COOR where R is C 1 -C 4  alkyl or a phenyl group optionally substituted by halogen, C 1 -C 4  alkyl, or C 1 -C 4  alkoxy, or is a group -CONHR 1  wherein R 1  is H or R, X is H, Y is Cl or Br, m and n are 0, 1, 2, 3 or 4,p is 0 or 1, and m+n+p=4, and Z when p=1 and m=3 Z is chlorine or a group RW-where R is as above and W is oxygen or sulphur. They are prepared by condensing an isoindoline of the general formula wherein V is >C=NH or >C(Y 3 ) 2  where Y 3  is halogen, C 1 -C 4  alkoxy or a secondary amino group with a bis-acetamide of general formula in the molar ration 2:1- The pigments are used to colour plastics, lacquers, printing inks and linseed oils.
Patent GB-1071773-A (GB)
Title: Production of fertilizers
Inventor: JANIKOWSKI STANISLAW MARIA
IPC: C05B7/00
Filed: 1963-08-08
Abstract: A granular fertilizer comprising ammonium nitrate and monoammonium phosphate having an N : P2O5 ration of 0.64-2.1 and a water content less than W% where W is 2 + 4N : P2O5 is continuously formed from a melt which is maintained by the continuous addition of further ingredients.  A melt of ammonium nitrate having a water content of 0-15% may be first formed and monoammonium phosphate added to it. Alternatively, a mixture comprising ammonium nitrate, monoammonium phosphate, and nitric and/or phosphoric acid having a pH below 3 may be first formed and then ammoniated to form a melt having a pH of 4. The further ammonium nitrate may be added as a hot concentrated solution containing 0-15% of water.  The further monoammonium phosphate may be added as a powder or as a solution or slurry. Ammonia and sulphuric acid may be added together with the ammonium nitrate and monoammonium phosphate to form up to 20% of ammonium sulphate based on the melt.  Up to 10% of diammonium phosphate may be included with the monoammonium phosphate.  The temperature of the melt may be maintained at 140-164 DEG  C.  The water content of the melt is preferably maintained below 4% and may be reduced by boiling or passage of air.  Potassium chloride, potassium sulphate, superphosphate, and trace elements may also be included in the melt. Granulation of the melt may be effected by spraying into a gaseous cooling medium; discharging on to a drum or belt cooler, removing as flake and breaking up in a disintegrator; or by spraying on to potassium chloride in a rotary granulator.
Patent GB-898077-A (GB)
Title: Circular knitting machines
IPC: D04B15/58
Filed: 1960-09-12
Abstract: 898,077. Knitting-machines. MORETTA, M. S. Sept. 12, 1960 [Sept. 12, 1959], No. 31270/60. Class 74 (2). A circular knitting-machine has a plurality of yarn feeding stations A, B, C, D spaced equally apart and each station has an equal number of yarn guides 1. A number of cam discs 12 . . . 16 equal in number to the number of guides 1 at each station are mounted on a bearer 11 coaxially with the needle cylinder. Each disc is adapted to control the corresponding guide at each station so that by rotating the bearer 11 by mechanism 17 . . . 24 the same yarn guide selection is made simultaneously at each station. If it is desired to render a station inactive the yarn guide support 6 can be moved away from the needle cylinder whereby the cam discs do not act on the guides.
Patent GB-478388-A (GB)
Title: Improvements in and relating to water tube steam boilers
IPC: F22B29/02
Filed: 1936-11-16
Abstract: 478,388. Promoting water circulation in steam boilers. BAUER, G. Nov. 16, 1936, No. 31310. Convention date, Dec. 4, 1935. [Class 123 (ii)] Marine water - tube boilers having a water tube lined furnace d fired by liquid or powdered fuel have an independent tube group b lying between a superheater a above the tubes bounding the top of the furnace and an air heater c in the smoke duct, the group being connected with the upper part of an upper drum f at but a few points and with a water space in the boiler, e.g. drum f or an under chamber g through a circulating pump o. The furnace front and rear walls may be protected by tube rows opening into cross drums connected to drum f and by steam pipes with a steam collector r. The lower ends of these tube rows open into a cross chamber connected to the chambers g feeding the furnace side wall tubes e, which are so bent that in cross section the furnace is of rhomboidal form.
Patent GB-262817-A (GB)
Title: Improvements in braking arrangements for vehicles having explosion motors
IPC: B60T13/24
Filed: 1926-12-13
Abstract: 262,817. Badertscher, O. J. Dec. 14, 1925, [Convention date]. Fluid-pressure. - A vacuum servo-brake for motor vehicles is controlled by means connected to at least one of the fuel controls, the accelerator pedal and the throttle control hand-lever. The brakes are actuated by one or more vacuum cylinders containing spring-returned pistons connected mechanically to the brakes, and the cylinders are connected through a control valve and, if more than one cylinder is employed, a distributor to the suction conduit of the motor. The control valve comprises a casing 6, Fig. 1, connected by a conduit 4 to the brake cylinder and by conduits controlled by valves 8, 10 to the motor suction conduit and the atmosphere respectively. The rod 11 of the valve 8 is guided by a sleeve 6a and the valve is pressed on its seat 7 by a spring 14 in the sleeve, and the rod 13 of the valve 10 slides in a bore in the rod 11 and is pressed by a spring 12 in the bore. A dog 16 on a shaft 15 controlled by a lever passes through a slot 11<a> in the rod 1.1 and enters a recess 13<a> in the rod 13, so that movement of the lever on the shaft 15 from the neutral position I to positions II, III opens the valves 8, 10 respectively to apply and release the brakes, both valves being closed in the neutral position I. A relief valve 18 in the conduit 4 opens if the vacuum in the conduit exceeds a. predetermined maximum. As shown in Fig. 4, the lever 17 of the control valve V is operated by either or both of the fuel controls, the accelerator pedal A and the throttle hand-lever G acting through parts of their ranges of movement, namely beyond cut-off position. The accelerator pedal A and hand lever G are connected to the valve lever 17 by rods and levers having lost motion connections to permit independent operation of the valve V by the pedal or hand lever.
Patent GB-856541-A (GB)
Title: Improvements in or relating to garden forks and like tools
IPC: A01B1/04
Filed: 1958-10-04
Abstract: 856,541. Garden forks. JENKS & CATTELL Ltd., A. E., and WOOD, G. W. Sept. 23, 1959 [Oct. 4, 1958], No. 31731/58. Class 6(2). A tined hand tool, such as a garden fork, comprises two U-shaped pieces 10 spaced apart by a bridge piece 12 formed with a spigot 18. The spigot has two splines 19 which fit into slots 20 at the base of a socket 13 for the handle of the tool. The members 10, 12 and 13 are all of metal, and after assembly are welded together, are heat treated to relieve stresses, and tempered to the requisite hardness. The handle, which may be wooden, is riveted to the socket 13 at 21.