baber/WOPTO huggingface dataset:
Patent GB-782904-A (GB)
Title: A ball valve device
IPC: F16K31/26
Filed: 1954-08-23
Abstract: 782,904. Valves. SHERWOOD, L. V. Aug. 23, 1955 [Aug. 23, 1954], No. 24483/54. Class 135. In a ball-valve device comprising two main portions 51, 67 with readily-releasable coupling means consisting of a stirrup 30 and an eccentric , roller 33, for securing the portions together in watertight relationship, one portion 67, including a ball-float, not shown, carried by an arm pivoted thereon and coupled to a main valve closure 72, the other portion 51 including a component adapted to be secured to a water inlet and to be housed within a tank 52, and an auxiliary valve closure 55 adapted to be moved against a seat 61 to prevent water being sucked back into the inlet due to the occurrence of a partial vacuum, the closure 55 also co-operates with another seat 58 to automatically prevent the passage of water between the inlet and the tank when the two parts are uncoupled. Mains water enters the tank 52 through the portion 51 having an extension 53 that may be arranged at 45 degrees to the inlet, in which extension is threaded a seating member 54 through which freely passes the fluted stem 56 of the closure 55; the member 54 embodies the seat 58 and another seat 59 for the main valve closure 72. The member 54 has an extension 60, fitted with the strainer 62, which provides the seat 61 whilst the main closure 72 has a protrusion 77 passing through a sealing washer 75 to coact with the fluted stem 56. Slidably in the part 67 is the main valve stem 73 to which is secured the washer 75, the stem 73 being connected to the ball valve arm via an adjusting screw. A chamber 68 in portion 67 opens into the tank by way of a delivery pipe which may be swung into a near horizontal position to ascertain whether the valve is functioning. An adjustable flow restrictor 50 is provided in the portion 51.
Patent GB-694653-A (GB)
Title: Improvements in metal shears for shearing metal and other sheets
IPC: B23D17/08
Filed: 1950-10-06
Abstract: 694,653. Shearing. CONSTANT, W. S. April 30, 1951 [Oct. 6, 1950], No. 24517/50. Class 83 (iv). A portable machine for shearing metal comprises a frame A with blade B co-operating with a blade L operated by a lever J pivoted to an extension D and guided in a slot C in the frame. The operating lever J carries sockets J<SP>1</SP>, J<SP>2</SP> into which a hand lever K may be inserted. The shear may be clamped in a vice with flanges M, N engaging the top and bottom faces of the jaws. A slot P in the frame allows passage of the workpiece. A hole in the frame web R may be used for mounting the shear on a structure.
Patent GB-188143-A (GB)
Title: Improvements in bedsteads
IPC: A47C19/22
Filed: 1921-09-16
Abstract: 188,143. Fletcher, A. E., and Fletcher, H. E. Sept. 16, 1921. Bedsteads fitted with drawers etc.; folding seats.-A bedstead of the kind wherein the space between the bed and the ground is utilized to form drawers &c., comprises an upper frame 1 fitted with longitudinal and transverse members 2, on which rests a metal frame 3 carrying the mattress 4, and a lower skeleton frame 5 connected by horizontal members 6 and divided by uprights 7 into compartments for drawers 8, 10 and cupboards 9, 11. The upper frame is slightly wider and longer than the lower, so that it overhangs it and provides for the ventilation of the mattress. A detachable seat 12 may be secured to the frame 5 by plates 13 having keyhole slots 14 which are engaged by the heads 16 of projections 15 carried by the seat, or studs on the framework may enter slotted lugs on the seat, or the seat may be hinged to the frame. The frame 1 may be provided with a detachable foot, or a head 17 retained in position by angle-brackets 18 or other means.
Patent GB-502034-A (GB)
Title: Adjustment mechanism for use with the cylinders of printing machines
IPC: B41F13/14
Filed: 1937-09-09
Abstract: 502,034. Printing-machines. HOE & CO., Ltd., R. (Hoc & Co., Inc., R.) Sept. 9, 1937, No. 24635. [Class 100 (ii)] The driving gears of a cylinder of an offset ur other printing press are constructed so as to permit of circumferential adjustment of a cylinder of any kind relatively to its driving gears to permit of accurate register, or adjustment of margin space, and also the gears are constructed to enable back-lash to be taken up. The circumferential adjustment is effected by means of a pinion 15 on a shaft 16 rotatably carried by a bush 28 secured to a driving gear 21, the pinion 15 being engaged by a segmental gear on an arcuate plate 12 secured by screws 13 to a plate 11 connected to the cylinder 9 by means of screws 10. The gear 21 is normally connected to the cylinder 9 by bolts 31, 32 which pass through arcuate slots 24, 29 in the gear and screw into tapped holes in the plate 11. The bolts 31, 32 are slackened and the shaft 16 rotated in order to adjust the circumferential position of the cylinder relatively to the gear 21. A backlash gear 22 is mounted alongside of the gear 21, and consists of a gear of similar pitch and diameter which can be adjusted relatively to the gear 22 by slackening screws 34 which pass through arcuate slots 33 in the gear 22 and are received by tapped holes in the gear 21. The shaft 16 is held from axial movement by a screwed plate 36 engaging a recess in the shaft. An index 38 is provided on a block 37 secured to the gear 21 and coacts with a datum mark on the plate 11 to indicate the adjustment of the cylinder 9 relative to gear 21. The gear 22 is slotted to permit of passage of the shaft 16 and the bolts 31, 32.
Patent GB-338188-A (GB)
Title: Improvements in apparatus for absorbing and measuring the power developed by prime movers
IPC: G01L3/22
Filed: 1929-08-13
Abstract: 338,188. Heenan & Froude, Ltd., and Walker, G. H. Aug. 13, 1929. Dynamometers, rotary-absorption. - In means for absorbing and measuring the power of prime movers, the power of the prime mover D is absorbed by a dynamoelectric machine A capable of functioning either as a motor or generator, a slipping clutch B<1>, B<2>, such as an hydraulic clutch, being interposed between the units A, D. The clutch may be of the form described in Specification 307,583 or 338,256, [both in Class 69 (ii), Hydraulic presses &c.]. The degree of slip between the two members B', B<2> is variable at will over a wide range of speed so that the shaft A<1> of the machine A may run at a constant speed while the primary shaft C runs at a variable speed, allowing the engine coupled thereto to be tested over a wide range of speed. A weighing machine G indicates the torque developed by the prime mover, or, alternatively, the torque leaving the primary shaft when the engine is being run-in. The current generated after the engine has been run-in may be employed to drive a motor H which drives a fan delivering cooling air around the engine D. In a modification, an hydraulic brake or dynamometer of the " Froude " type is mounted on the primary shaft between the slipping clutch and the coupling c. In a further modification, the casing of the slipping clutch is fixed and the engine D is carried on a torque cradle fitted with a weighing device.
Patent GB-1069802-A (GB)
Title: 17ª-halo-alkenyl and alkynyl steroids
IPC: A61K31/567
Filed: 1964-06-15
Abstract: Novel steroids of the formulae <FORM:1069802/C2/1> (wherein Y is a two or three carbon unsaturated halogenated hydrocarbon group, and R1 is H or acetyl) are prepared by reacting the appropriate D 4,9(10)-3-ones with lithium aluminium hydride tri-tertiary butoxide in an inert organic solvent to produce the corresponding D 4,9(10)-3b -ols and if desired, acetylating these to give the 3b -acetoxy compounds, or by acetylating the 17b -hydroxy-D 4,9(10)-3-ones to produce the D 3,5(10) 9(11)-3-acetoxy compounds (and concomitantly the 17-acetates of the starting materials).  17a  - Y - 17b  - Hydroxy - estra - 4,9(10)-dien-3-ones are prepared from 3-methoxy-estra-2,5(10)-dien-17-one and halo-alkynes or -alkenes or their metal derivatives with subsequent hydrolysis to 5(10)-en-3-ones and reaction of these with bromine in pyridine or with a perbromide hydrobromide. 17a -(31,31,31 -Trifluoropropenyl)-derivatives are prepared by reduction of the trifluoropropynyl compounds. 17b  - Acetoxy - 17a  - Y - estra - 4,9(10) - dien-3-ones are prepared by acetylation of the 17b -ols.  The steroids of the invention, which are stated to be progestational agents, may be made up into pharmaceutical compositions for oral or parenteral administration with suitable carriers.
Patent GB-1473975-A (GB)
Title: Plasma display screen for displaying a matrix of luminous points
IPC: H01J17/49
Filed: 1975-06-10
Abstract: 1473975 Gas discharge display panels E LE COQUIL H PRIGENT and G GERARD 10 June 1975 [10 June 1974] 24838/75 Heading H1D In a matrix plasma display screen all the electrodes are provided in a common plane on the back plate. As shown the screen comprises a transparent front plate 55, a first intermediate plate 53 formed with a matrix of holes 54 arranged in n lines by m columns, a second intermediate plate 51 having n slots 52 aligned with the respective n lines of holes and a back plate 41 supporting in a common plane a plurality of electrodes 43-47, the spaces defined by the holes and slots being filled with a gas under low pressure, wherein the electrodes comprise m parallel sweeping electrodes 42 alternating with m parallel display electrodes 44, each display electrode 44 being aligned with a respective column of holes 54, a set of sweeping bus-bars 43 connected in cyclic order to the sweeping electrodes 42, a set of display bus-bars 45 connected in cyclic order to the display electrodes 44, a fly-back cathode 47 parallel to and adjacent the first sweeping electrode 42 and a set of n fly-back anodes 46 parallel to and communicating with the n slots in the plate 51. The screen is operated by sweeping in series each of the m lines of the matrix display. This is done by applying pulses of + 250 v. to a particular flyback anode 46 and of - 50 v. to the fly-back cathode 47 to trigger the local region or cell defined thereby and preionize the adjacent cell, which in turn is triggered by bringing the sweeping electrode 42 1  immediately adjacent the cathode 47 to zero volts and the sweeping electrode 42 2  to + 250 v. Thus the cells along the particular row i are triggered in series, however no light output is seen since the region of glow discharge, adjacent the sweeping electrodes in turn, is masked by the sheet 53. In order to obtain a light output the corresponding display electrodes 44 are pulsed appropriately in synchronism with the sweeping pulses but addressed to X-Y.
Patent GB-830056-A (GB)
Title: Improvements in or relating to chokes
Inventor: KING HAROLD REGINALD
IPC: H01F29/10
Filed: 1957-08-07
Abstract: 830,056. Inductors. GENERAL ELECTRIC CO. Ltd. April 25, 1958 [Aug. 7,1957],No. 24953/57. Class 38 (2). An adjustable choke comprises a laminated core having an air gap 5 in which an armature 6 may be positioned and secured by a screw 7, the armature being a tubular member of rectangular section.
Patent GB-421211-A (GB)
Title: Improvements in or relating to electric coupling means for the sparking plugs of internal-combustion engines
IPC: H01T13/08
Filed: 1933-09-08
Abstract: 421,211. Two-part couplings. BRISTOL AEROPLANE CO., Ltd., and FEDDEN, A. H. R., Filton House, Bristol. Sept. 8, 1933, Nos. 24968/33, 35478/33, and 22707/34. [Class 38 (i)] Three forms of coupling are described for connecting a plug mounted in a recess in the cylinder head of a sleeve-valve internal-combustion engine with an ignition lead. As shown in Fig. 1, the lead 10 is extended through a steel tube 11 secured to an insulating moulding 12 provided with a contact member 16 which is connected to the cable by a screw. A second tube 11 carries a further cable to a second contact member on the same moulding. Both tubes are secured to a dished plate 18 which is held in position by a pivoted member 23 in a hole in a cover plate bolted to the cylinder head. In the arrangement shown in Fig. 6 which is for an aircraft engine of the kind described in Specification 364,065, [Group XXVII], the cables are secured to and connected to conductors in a moulding bolted to a cover plate 29 and provided centrally with a rectangular hole. A removable member 38 inserted in the hole and held by a metal arm 50 completes the circuit through spring contacts engaging the slug terminals and further spring contacts engaging contacts appearing on the inner surfaces of the walls of the rectangular hole in the fixed moulding. Screening is completed in this modification by a metal-sheet 52 on the removable member. Access to the coupling is given through a streamlined cowling by moving a cover 48. A further modification, Fig. 13, resembles that just described, but is provided in addition with rubber tubes 56 and packing rings 72 to exclude moisture from the high voltage circuit. The plug portion in the arrangement shown in Fig. 6 is provided with an internally threaded bush 53 in which a rod may be screwed to facilitate removal. According to the first Provisional Specification, the coupling member shown in Fig. 1 may be secured by a clamp to the cylinder head instead of to a dished plate forming part of a deflector plate.
Patent GB-532478-A (GB)
Title: Improvements relating to centrifugal speed governors
IPC: G05D13/10
Filed: 1939-08-31
Abstract: 532,478. Speed governors. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 31, 1939, No. 25010. Convention date, Aug. 31, 1938. [Class 57] In a governor of the kind comprising flyweights on pivoted arms connected by a spring, the centre of mass of each fly-wheel and the point of application of the spring force are radially outwards and inwards of the associated pivot when the governor is at rest, the arrangement providing satisfactory regulating-characteristics over a wide range of speed. The governor shown in the Figure comprises fly-weights 21, 22, which are pivoted by means of pins 23 and roller-bearings in brackets on a cup 10, and are attached by screws 39, 40 to a tension spring 38. An arm 28 on the fly-weight 21 carries a roller 29 engaging an arm 30 on the fly-weight 22, the arm 30 being connected by a rod 32 to a pilotvalve sleeve 33 which is driven by means of a spring 35. The lines joining each pivot 23 to the centre of mass of the associated fly-weight and the point of attachment of the spring extend outwards and inwards respectively, and are inclined downwards at an angle of 45 degrees in the rest position.
Patent GB-1088706-A (GB)
Title: Manufacture of pyridine
Inventor: BARTHOLOMEW DONALD HERBERT
IPC: C07D213/09
Filed: 1965-05-04
Abstract: Pyridine is obtained by interacting ammonia with tetrahydrofurfuryl alcohol in the vapour phase at an elevated temperature in the presence of a catalyst comprising platinum. The catalyst may be used in finely divided form on a carrier or support and the reaction may be effected at 200-500 DEG  C.  The ammonia may be employed in an amount of 1 to 2 moles per mole of starting material, the reaction mixture may contain molecular oxygen, suitably in an amount of 0.1 to 1 mole per mole of starting material, and other diluent gases or vapours, e.g. steam, may be present.
Patent GB-795545-A (GB)
Title: Concentration of hydrazine solution by evaporation and rectification
IPC: C01B21/16
Filed: 1955-09-01
Abstract: <P\1> Hydrazine hydrate is produced from dilute aqueous hydrazine by charging the dilute solution to an evaporator which is heated by an external source of heat and is part of a multiple-effect system comprising two or more evaporators each of which is connected to a rectification zone, the stages being maintained at diminishing pressure and the arrangement being such that the solution flows through the evaporators in series and the overhead water-vapour from each rectification zone (except the last) is used to heat the following evaporator; concentrated aqueous hydrazine is withdrawn from the base of each rectification zone and subjected to distillation in a column to obtain hydrazine hydrate as bottoms.  In the double-effect system shown, rectifier 19 is disposed between evaporators 12 and 16; and rectifier 26, which follows evaporator 16, is connected to receiver 29.  The second stage is evacuated via line 30.  Evaporator 12 is heated by steam introduced through line 13, and condensate is discharge via line 14.  Aqueous liquor containing 1.5 per cent hydrazine and 12 per cent of salt is introduced through line 11 into evaporator 12; concentrated liquor flows via line 15 from evaporator 12 to evaporator 16; and salt crystals are discharged through line 17. The vapours from evaporator 12 pass up rectifier 19 where preferential condensation of hydrazine takes place.  Steam, free from hydrazine, leaves the top of rectifier 19, and is introduced by means of line 20 into the heating coils of evaporator 16.  The vapours from evaporator 16 flow up rectifier 26; and the steam leaving the top is condensed in condenser 28, the water being collected in receiver 29.  The water withdrawn from the coils of evaporator 16 via line 21 is united with that withdrawn from receiver 29 via line 33; this water is used partly as reflux for the rectifiers, and partly as process-water.  The bottoms from the rectifiers are charged through line 36 into stripper 37, the base of which is connected to steam-heated reboiler 39.  The vapours from the top of the stripper are introduced through line 44 into the base of rectifier 19 for the recovery of hydrazine.  Hydrazing hydrate is removed from reboiler 39 through line 45.
Patent GB-535612-A (GB)
Title: Improvements in and relating to the production of pastes from polymerised vinyl chloride
IPC: C08J3/22
Filed: 1939-09-07
Abstract: 535,612. Polyvinyl chloride compositions and films; coated fabrics. RENFREW, A., DAVISON.. J. W., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Sept. 7, 1939, No. 25220. [Classes 2 (ii) and 2 (iii)] [Also in Grcup VIII] Smooth, flowable pastes are prepared from polyvinyl chloride and a plasticizer or mixture of plasticizers by carrying out the mixing operation in two stages, the first stage comprising mixing the plasticizer with 5 to 10 per cent. of the polymer and the second stage comprising mixing the remainder of the polymer with the product of the first stage, the proportion of plasticizer in the final paste being 35 to 80 per cent. by weight, and the plasticizer being practically non-volatile and such that insoluble polyvinyl chloride is from scarcely soluble to insoluble therein at ordinary temperature. By insoluble polyvinyl chloride, is meant soluble in acetone to an extent not more than 15 per cent. by weight at 20‹ C. The plasticizers may be any of those known for use with polyvinyl chloride provided they have the specified solubility characteristic, e.g. tricresyl phosphate, dibutyl phthalate, diamyl phthalate, triethyl citrate, triglyceryl butyrate, ethyl cinnamate or chlorinated diphenyls. The first stage mixing may be carried out at an elevated temperature, e.g., 60‹ to 120‹ C., whereby a smooth mixture is obtained which is readily mixable in the second stage with the remainder of the polyvinyl chloride, the second stage being carried out at a temperature below 70‹ C. to avoid gelatinization. In examples, pastes are prepared by, (1) mixing polyvinyl chloride with tricresyl phosphate at 120‹ C., and then mixing the syrup at 60‹ C. with the remainder of thepolyvinyl chloride, and (2) mixing polyvinyl chloride with dibutyl phthalate at 60‹ C. and then mixing with the remainder of the polyvinyl chloride at 15‹ C. Films or coated fabrics may be prepared by spreading the paste on a smooth surface or a fabric and gelatinizing by heating at 160‹ C. Specification 500,298 is referred to.
Patent GB-756643-A (GB)
Title: Improvements in or relating to culinary mixes
IPC: A21D2/14
Filed: 1954-08-31
Abstract: Dry mixes for use in making cakes of the foam batter type such as angel food, chiffon and sponge cakes comprise a metal soap, e.g. calcium or magnesium oleate, calcium, sodium, magnesium, or aluminium myristate, aluminium, sodium, calcium or magnesium stearate, calcium, sodium or magnesium palmitate, and an edible, compatible diluent in amount sufficient to permit ease of mixing of the soap with the other batter ingredients.  The soap is diluted at least fifty times.  The diluent is exemplified by flour, starch, sugar, gelatine, pectin, a gum, an alginate, dextrin, a cellulose ether, soy protein, calcium carbonate, ground egg shell; substances of high fat content and excessive amounts of flour and sugar are undesirable.  Making the cake batter involves whipping egg white to a stable foam, and mixing therewith the soap and diluent mixture, the amount of soap being 0,02 to 1 per cent by weight of the dry egg white.  Examples are concerned with baking cakes from batters made by folding a mixture of sucrose, flour, starch, sodium chloride, cream of tartar and calcium stearate and by folding a mixture of sucrose, flour, starch, sodium chloride and cream of tartar and then a mixture of magnesium stearate and calcium carbonate into foams of water, dried egg white, sodium hexametaphosphate, cream of tartar and sucrose; further examples are concerned with baking cakes from batters similarly prepared wherein fresh eggs, fresh eggs and vegetable oil, dried egg yolks are also incorporated into the foam.  A further example is concerned with baking a cake from a batter prepared by foaming water and a mixture of dried egg white, sodium hexametaphosphate, dextrose, coating sugar, cream of tartar, sodium chloride, wheat starch, flour, hydrolyzed soy protein and calcium stearate.
Patent GB-301984-A (GB)
Title: Improvements in time-controlled automatic apparatus for operating window blinds, sunblinds and the like
IPC: E06B9/68
Filed: 1927-09-26
Abstract: 301,984. Hunter, A. Sept. 26, 1927. Window blinds. - Apparatus for automatically operating blinds comprises means, such as weights or springs, tending to move the blind in one direction, operating gear adapted to move the blind in the opposite direction, a detent adapted to retain the blind in the position into which it has been moved by the operating gear and a detent releasing device operated by clockwork mechanism to release the detent at a predetermined time. In the construction shown a. blind A, wound upon a roller a' is raised, in opposition to weights a', by winding a cord b<1>, secured to a pulley a' on the roller a<1>, upon a drum B supported in a casing c. To hold the blind in its raised position a detent H prevents the rotation of a shaft e<6>, by engaging with an air vane G carried by the shaft, provided with a toothed wheel e<3> connected through a chain or wheels E3, e<2>, E2, e<1> with a toothed wheel E1 connected by a pawl F and ratchet e<7> device to he drum B, the arrangement being such that a relatively small force is required to hold the air vane G and consequently the drum B against rotation by the action of the weights a<3>. The pawl F &c. device allows the drum B to be rotated, without rotating the vane G, to raise, the blind. The apparatus for releasing the detent, which is pivoted at h<1>, consists of a toothed segment h<3> attached thereto and engaged by a tooth m<1>, carried by a sleeve M, rotated through a suitable connection by the minute or hour-hand arbour of clock mechanism K. In the construction shown, the tooth m<1> is carried by a sleeve M and is driven by the minute hand arbour through compound gear wheels o1, o2, o3 and m2 to rotate the sleeve M at the speed of the hour arbour, the sleeve M carrying a hand m<3> moving over a clockface P. In order to prevent operation of the detent from lowering the blind, a pawl R may be turned to engage a rack r<1>, secured to the shaft e<5>, upon which the wheels e<2>, E3 are secured. The detent H may be actuated at any time by rotating a lever Q, having a pin q<2> engaging the quadrant h<3>. In order to hold the quadrant h<3> in position to which it is moved by the tooth m<1>, the quadrant is engaged by a pivoted pawl h<4> which may be lifted, to reset the apparatus, by a handle h<7>.