baber/WOPTO huggingface dataset:
Patent GB-169776-A (GB)
Title: Improvements in methods of separating coal into different grades adapted for various purposes
IPC: B03B5/44
Filed: 1920-06-25
Abstract: 169,776. Findley, A. E. June 25, 1920. Wet-separating.-Coal is separated into different grades by washing it, preferably in the form of slack, in a solution having a known specific gravity such as a solution of calcium chloride, zinc chloride, or sulphuric. The coal which floats in a solution of specific gravity 1.3 is suitable for the production of metallurgical coke, and that which floats in a solution of specific gravity 1.48 is suitable for low-temperature distillation. Reference has been directed by the Comptroller to Specification 4473/79.
Patent GB-458373-A (GB)
Title: Improvements in or relating to abrasive coated strips or sheets and to rotary polishing and like devices comprising said strips or sheets
IPC: B24D9/00
Filed: 1935-06-17
Abstract: 458,373. Grinding-wheels abrasivecoated sheets. TENNANT, W. J., 111, Hatton Garden, London.-(Carborundum Co. ; Niagara Falls, New York, U.S.A.) June 17, 1935, No. 17438. [Coats 60] An abrasive coated strip or sheet is formed with transverse corrugations extending wholly or partly across the strip, the strip when in use resting with the depths of the corrugations on the periphery of a rotatable element. The strip 21, which may be of paper, cloth, celluloid, &c., may have oblique corrugations 23-28, Figs. 1 and 2, or the corrugations may be formed directly across the strip, or in groups of short corrugations, and in order to produce a strip curved transversely for use on a wheel of the form shown in Fig. 7, wherein the corrugated strip 32 rests on a felt layer 31 on the wheel 30, the corrugations 41 may extend partly or wholly across the strip 42 and are of a depth varying along the corrugations as shown in Figs. 13 and 15. In the production of the corrugated sheet, the backing, coated with adhesive and abrasive grains, is passed, after the adhesive has set, between heated corrugated rollers 36, 37 rotated in opposite directions, one of the rollers having a slightly yielding surface, e.g. of canvas or leather. In the production of transversely curved strips, the coated strip is passed between a curved and corrugated roller and a belt of rubber, leather, &c. which is pressed on to the sheet by a follower wheel.
Patent GB-1497685-A (GB)
Title: Contact fuser apparatus
IPC: G03G15/20
Filed: 1975-04-29
Abstract: 1497685 Fixing electrostatic toner images XEROX CORP 29 April 1975 [22 July 1974] 17769/75 Heading G2H Heated fuser roller 30 has a copper body 31 with an internal heater 32, and is coated with a mixture of low molecular weight polyethylene and about 0À1 wt. per cent of copper. The polyethylene reacts with the copper body, at a rate controlled by the copper additive, and also forms a release coating on the roller 30.
Patent GB-165743-A (GB)
Title: Method of manufacture of raw alkali-cellulose for working into viscose
IPC: C08B1/08
Filed: 1921-06-30
Abstract: Alkali cellulose for the manufacture of viscose is prepared by agitating cellulose with the caustic soda solution at a temperature above 18 DEG  C. for a short time, say twenty minutes, and removing the excess of caustic soda solution by centrifuging, and, if necessary, pressing; a ripening process is unnecessary. As raw material, paper pulp or flakes may be employed.
Patent GB-1218634-A (GB)
Title: Method of very low-temperature heat exchange
Inventor: OSBORNE DONALD VERNON
IPC: F25D9/00
Filed: 1968-04-16
Abstract: 1,218,634. Coatings. NATIONAL RESEARCH DEVELOPMENT CORP. 2 April, 1969 [16 April, 1968], No. 17841/68. Heading B2E. [Also in Division F4] Barium stearate films are deposited on a gold specimen as follows. A solution of stearic acid in n-hexane is spread on the surface of a solution of barium acetate and the n-hexane is then allowed to evaporate so that a surface monolayer of barium stearate is formed. The monolayer is then compressed against the walls of the solution container by the movement of a plastic boom until the force exerted by the monolayer on the boom is 30 dyne/cm. The monolayer is then transferred to the specimen by drawing the latter through the solution surface. The layer may be of polyethylene or polystyrene.
Patent GB-327906-A (GB)
Title: Improvements relating to latches for doors
IPC: E05B65/00
Filed: 1929-06-11
Abstract: 327,906. Newman & Sons, Ltd., W., and Rollason, S. A. June 11, 1929. Latches, sliding.-A plate 9 is mounted to rotate on the latch-bolt 2, or an extension 2<a> thereof, and is moved in front of a web 11 on the casing 1 to lock the bolt when shot.. The plate 9 has lugs 12, 13 engaged by a key 10, and recesses engaged by a projection 17 on the bolt. The bolt 2 has a roller 4 at the latch end.
Patent GB-931819-A (GB)
Title: Improvements in and relating to sorting machines
IPC: B07B13/07
Filed: 1961-05-17
Abstract: 931,819. Sorting solid materials. J. M. VAN DEN MUNCKHOF. May 17, 1961 [May 21, 1960], No. 17948/61. Class 117. Fruit or other articles, e.g. tomatoes, to be sorted according to size, are fed by a shoot 18 to near the hub of a rotary grader 3 driven about its vertical axis, and in the form of a wheel with spokes 4 between adjacent ones of which the articles fall at positions according to their size, and are received in various boxes 19. The grader is driven by a motor 6, and the articles are guided over the grader by a spiral-shaped stationary guide 13 which may comprise a number of strips 9-12, each of which may pivot about their one ends; an additional guide portion in the form of a concentric strip 8 is provided. A more exact sorting is provided by a stationary guide bar 22, Fig. 4, placed below the spokes and extending inwards of the spiral guide 13. The delivery end of the shoot has a threshold 20 which temporarily arrests the articles which are then fed forwards singly by a vertically reciprocated part 21, Fig. 3. The spokes 4 may extend spiral fashion from the hub to the wheel periphery.
Patent GB-145769-A (GB)
Title: Improvements in change speed gearing
IPC: F16H3/30
Filed: 1920-07-02
Abstract: 145,769. Daimler-Motoren-Ges. May 10, 1918, [Convention date]. Variable speed toothed gearing comprises relatively large gears such as c, d, which are cupped so as to pass over or envelop smaller gears such as g, h so as to save space. In the arrangement shown, gears k, m, n, o adapted to mesh with the gears c, g, h, d slidable on a shaft a are secured close together on their shaft i. The outer gears c, d are secured to a sleeve b splined on the shaft, and these gears are normally just clear of the gears k, o. The inner gears g, h are secured to a sleeve f splined on the sleeve b and are normally opposite the gears k, o.
Patent GB-871469-A (GB)
Title: Improvements in and relating to movable roof panels for motor vehicles
IPC: B60H1/26
Filed: 1956-06-12
Abstract: 871,469. Movable roofs for vehicles. DOBSON, J D. Sept. 12, 1957 [June 12, 1956], No. 18135/56. Class 108(1). A vehicle roof has an opening 2 with a cover 1 which latter is linked to the frame 10 of the opening so that the cover can be moved to expose the opening, and co-operating fastening means between the cover and the frame and a member, or members operable to release the fastening means and subsequently raise the cover. The perimeter of the cover is reinforced by a frame 13 to which four links 3 are pivoted, the links being offset and cranked to facilitate movement of the cover rearwardly. The opening which extends substantially across the full width of the roof has a frame 10 around the front and sides and a reinforcing bar 12 welded across the rear, the lower ends of the links being pivoted on brackets 14, 15, secured to the sides of frame 10. A locking device comprises spring- loaded latch levers 18 pivoted on a transverse bar 17 and engaging locking members 20 or 25 in the closed and open positions respectively. By operating the bar 17 the levers 18 are first released and further movement of the bar raises the cover. Sealing means include channels 21 containing sealing material, formed around the frame of the opening, and a capping or beading 23 which reinforces the co-acting edge of the cover.
Patent GB-1425797-A (GB)
Title: Pterin deaminases having antitumor activity and process for their production
IPC: C12N9/78
Filed: 1974-04-25
Abstract: 1425797 Pterin deaminase YAMASA SHOYU KK 25 April 1974 [12 May 1973] 18149/74 Heading C3H [Also in Division A5] Pterin deaminase is produced in a culture medium by cultivating a microorganism selected from the geneva Aspergillus, Mucor, Rhizopus and Penicillium. Preferred microorganisms are A. oryzae, A. tamarii, R. japonicus, M. lamprosporus, P. Y70-2 (ATCC 20411) and A. Y8-5 (ATCC 20413) whilst A. gymosandae, M. albo-acter, R. arrhizus, A. Y43-4 (ATCC 20414), and P. Y110-2 (ATCC 20412) are also specified. It is preferred to use a solid culture medium, and, although conventional nitrogen and carbon sources may be used, wheat bran is particularly effective for the production of the enzyme. The culture is grown at a temperature of 10-40 C. and at a pH of 5-9.
Patent GB-836327-A (GB)
Title: Improvements in or relating to swash plate pumps
IPC: F04B1/14
Filed: 1957-06-07
Abstract: 836,327. Swash plate pumps. FORD MOTOR CO. Ltd. June 7, 1957 [Aug. 24, 1956], No. 18229/57. Class 102(1). The end 62 of the pistons engaging a swash plate 59 approximates a truncated cone the generating line of which makes an angle with the axis of the piston corresponding to the angle between the plane of the swash plate and the axis of the driven shaft and is convexly arched by about 0À002 of an inch. The pistons are urged towards the swash plate by springs 52 and the inlet to the pump has a fixed orifice 77 so that above a certain speed the pistons do not make a full stroke.
Patent GB-332022-A (GB)
Title: Improvements in or relating to shock absorbers
IPC: F16F9/26
Filed: 1929-06-13
Abstract: 332,022. Stevens, A. H., (Delco Products Corporation). June 13, 1929. Fluid-friction vibration-dampers. - In apparatus of the type in which two pistons working in opposed cylinders contained in a single casing are forced by springs into engagement with an intermediate operating-lever, one-way valves are provided in the pistons to allow free inward movement while the compression chambers formed by the outer ends of the cylinders are each connected to a separate duct, oppositely acting pressure-release devices being interposed between the ducts. The two pistons 36. 37 work in opposed cylinders 30, 31 and are forced towards one another by springs 47, 58 into engagement with opposite sides of the operating-lever 46 which is mounted on an operating-shaft connected to the axle of the vehicle. The casing 24, the central part of which forms a liquid reservoir, is bolted to the vehicle frame. Each piston carries a spindle 40 which forms a guide for a one-way valve 39 allowing practically free passage of liquid from the central reservoir 27 to the cylinder when the piston is moving inwards. The compression chambers at the outer ends of each of the cylinders 30, 31 are connected respectively by holes 63, 64 to parallel ducts 60, 61 which communicate with one another through oppositely-acting pressure-release valves 71. The valves 71 may be pressed on to their seats by springs of different strength so that the movements of the lever 46 in opposite directions may be resisted by different forces.
Patent GB-857702-A (GB)
Title: Improvements in or relating to the treatment of threads, filaments or the like
Inventor: ARMISTEAD JOHN COCKSHOTT
IPC: F26B13/00
Filed: 1956-06-13
Abstract: 857,702. Coating threads. GARNETT & SONS Ltd., G., and LANGLEY Ltd., G. H. June 12, 1957 [June 13, 1956], No. 18261/56. Class 140. [Also in Group XIII] Natural or synthetic threads, strands, filaments or fibres in parallel arrangement are treated with a liquid medium, while passing over a roller, passed through a drying chamber through which heated air passes in one direction only and in which they follow a tortuous path, and delivered to a rotary receiving means. As shown, Fig. 1, warp threads 2 are drawn from a creel frame 1, through a reed 3, and under a guide roller 4, to a roller 5 engaging a roller 6 in a sizing bath 7. The threads travel thence under a guide roller 8, and through a drying unit 9 and a reed 10, and are wound on a cylinder or similar element of a warping machine; they may alternatively pass over a driven roller 10a. Condensate from the unit 9 may be led to a jacket 12 around the bath 7, which may also, or alternatively, be otherwise heated. The roller 5 may be given a lateral axial movement to roll the size on to the threads. The unit 9, of heat-insulating material, has a chamber 15 furnished with slots such as 22 in its opposite walls for ingress and egress of the web of threads, rollers 23 opposite the slots, and rollers 21 and two rollers at the top and three at the bottom of the chamber, over which the web is festooned. A fan 16 circulates air through a side chamber 14, over a heater unit 17, through a distributing grid 35, and thence downwardly through the chamber 15 and a second grid 35 back to the fan. The chamber contains vertical baffles between which the web passes. Hot air jets may also be caused to impinge on the web in the chamber. The rollers 21, 23, and a central baffle, comprise a unit 26 which is mounted on a spindle 27 which carries a rack 31 engaged by a handoperated pinion 33 and is supported by rollers 28, 29. This enables the unit 26 to be displaced outside the chamber 15 (the side wall of which is removable), and, on engagement of the pinion 33 with grooves 32 in the spindle, to be turned to horizontal position for ready positioning of the web around the rollers.
Patent GB-444562-A (GB)
Title: Improvements in and relating to regulators for dynamo electric machines
IPC: H02K23/06
Filed: 1934-06-20
Abstract: 444,562. Controlling dynamos. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. June 20, 1934, No. 18288. Void [Abridged as open to inspection under Sect. 91 of the Acts, Dec. 21, 1934]. [Class 35] For the stable regulation within wide limits of the voltage of a continuous current shuntwound generator by varying the field resistance, the excitation current is conducted entirely or partly through a metal filament lamp or a resistance having a similar characteristic such as an iron wire resistance. In one form, the lamp is connected in parallel with the field rheostat. The invention is applicable particularly to train lighting dynamos driven at constant speed by steam turbines. The Figure shows such an application, in which two adjustable resistances c, d are connected in series with the field winding f. For lighting service, an electrically operated switch s which when closed shortcircuits the resistance d, is opened and the machine works at low voltage. For battery charging, the voltage is raised by shortcircuiting the resistance d. A metal filament lamp g is connected as shown to give stable operation at low voltages.
Patent GB-578253-A (GB)
Title: Improvements relating to handles for attache cases, and for other cases
IPC: A45C13/26
Filed: 1944-09-26
Abstract: 578,253. Suitcase handles. RUSSELL & SONS Ltd., S., and RUSSELL, W. H. Sept. 26, 1944, No. 18343. [Class 133] A handle 2 folding closely to an attache case 1 &c. has pins 10 on its ends sliding in U-shaped links 4 secured at 3 to the case 1. The fastenings 3 are hollow metal pressings secured to the case by tongues 8 or rivets. One such link only may be fitted the other end of the handle being so attached as to allow the handle to lie flat.
Patent GB-401417-A (GB)
Title: Improvements in or relating to fly swatters
IPC: A01M3/02
Filed: 1932-06-30
Abstract: 401,417. Destroying flies. LILLARD, W. W., 96, Park Avenue, Midland Park, New Jersey, U.S.A. June 30, 1932, No. 18516. Convention date, July 14, 1931. [Class 5 (i).] A fly-swatter comprises a flap element 10 made up in two parts 11, 12, of light weight soft sponge rubber cemented together over a flexible wire netting frame N of which the lower corner portions 17 are bent about a triangular extension 16 of a stiff wire member 14 the lower end of which is embedded in a handle 13. Closely spaced holes 18, 19 are made in the flap element 10. The sides of the flap may be of differently coloured sponge rubber. The handle may be detachably connected to a coil spring stiffening member embedded in the flap, the parts of which are grooved to receive the springs. In a further modification a wire handle is permanently or detachably connected to a spring stiffening member.
Patent GB-726280-A (GB)
Title: Improvements in or relating to hydraulic torque transmitting devices
IPC: F16D33/20
Filed: 1953-07-03
Abstract: 726,280. Hydraulic couplings. FORD MOTOR CO., Ltd. July 3, 1953 [July 3, 1952], No. 18538/53. Class 69 (2). A vaned wheel 11 for a hydraulic torque transmitter comprises a plurality of blades 19, each having a tab 21 projecting from one edge, and a shroud 26 having a plurality of openings 27 therein for receiving the tabs and having deformable tongues 28 struck out adjacent the openings 27 and engaging the edges of the tabs 21 to retain the shroud and blades in assembled relationship. The blades are cast integrally with an outer shroud 13 and the tabs 21 are initially as shown dotted in Fig. 5; the inner edge is subsequently machined so that the edge 24 is parallel with the edge 22 or undercut. The tongues 28 are then rolled to cause the end 31 to engage the edge 24. The tongue has a bowed portion 29 which when the edge 24 is undercut is completely flattened. The tabs 21 are a clearance fit in the openings 27. The blades may be stamped out and the outer shroud may be assembled in a similar manner to the inner shroud'. .
Patent GB-259330-A (GB)
Title: Improvements in steam traps or condensate accumulators for steam plants
IPC: F16T1/24
Filed: 1925-07-22
Abstract: 259,330. Millington, W. E. W. July 22, 1925. Steam traps. - In a steam trap of the kind described in Specification 201,951, the floatoperated butterfly valve has its two wings a, b, of unequal length, and is centrally pivoted in the passage d. The passage is either converging or diverging, and the pressure on the unequal wings of the valve assists or retards the closing respectively. Alternatively. the valve may be mounted in a passage with parallel walls, the pivot in this case being necessarily eccentric.
Patent GB-873868-A (GB)
Title: Epoxy esters derived from cyclopentadienes
IPC: C07D303/40
Filed: 1959-06-02
Abstract: Epoxidized polycyclopentadiene esters of aliphatic carboxylic acids (see Group IV(b)) are useful as plasticizers and stabilizers for synthetic resins.  In examples, the use of dicyclopentadiene oleate epoxide:  <FORM:0873868/IV (a)/1> as a plasticizer is illustrated using compositions comprising polyvinyl chloride, Ba-Cd phenate, stearic acid and a plasticizer which may be didecyl phthalate (D.D.P.), 50% D.D.P. and 50% iso-octyl oleate epoxide, 50% D.D.P. and 50% dicyclopentadiene oleate, or 50% D.D.P. and 50% dicyclopentadiene oleate epoxide; a further example illustrates the use of dicyclopentadiene oleate epoxide as a stabilizer in a composition comprising polyvinyl chloride, didecylphthalate, Ba-Cd phenate and stearic acid as compared with the use of iso-octyl oleate epoxide or dicyclopentadiene oleate as stabilizers.ALSO:The invention comprises an epoxy ester derived from a polycyclopentadiene and an aliphatic carboxylic acid wherein an oxirane ring is substituted for the residual ethylenic group in the terminal cyclopentadiene ring of said esterified polycyclopentadiene.  Such compounds may be of the general formula:-  <FORM:0873868/IV (b)/1> wherein n is 0, 1 or 2, R is a monovalent aliphatic hydrocarbon radical or epoxidized aliphatic hydrocarbon radical and the carbon valencies not satisfied in said formula are satisfied by hydrogen or C1-C4 alkyl radicals.  Preferred esters are the dicyclopentadiene esters, particularly where R is an an epoxidized oleate group, or heptyl or nonyl group.  The epoxy esters may be obtained by reacting the corresponding unsaturated ester with an epoxidizing agent at temperatures between -30 DEG C. and +100 DEG C.  Suitable epoxidizing agents are hydrogen peroxide and p  organic peracids, e.g. performic, peracetic, perbenzoic, and monoperphthalic acid, 1 or 2 moles being used per ethylenic group in the ester.  The unsaturated esters having a double bond in the terminal cyclopentadiene ring may be obtained by direct esterification of the carboxylic ester with the polycyclopentadiene at temperatures of 25 to 145 DEG C., suitable catalysts AlCl3, BF3, H2SO4 and other Lewis acids.  Diluents such as benzene, toluene, cyclohexene and cyclohexanone may be used.  Alternatively the polycyclopentadiene may be first hydrolysed with at least an equal amount of water in the presence of a mineral acid catalyst at from 60 to 120 DEG C., the resulting cyclic alcohol is recovered and esterified with the carboxylic acid in conventional manner, e.g. by heating with an equimolecular amount of acid at 80 DEG  to 220 DEG C., if desired with catalysts such as sulphuric acid, p-toluene sulphonic acid, benzene sulphonic acid and phosphoric acid, and using entrainers such as benzene, toluene, hexane and heptane.
Patent GB-913666-A (GB)
Title: Improvements in or relating to fire-detection circuits
Inventor: ADAMS FRANCIS JOHN
IPC: G08B17/00
Filed: 1960-05-27
Abstract: 913,666. Fire-alarm systems. PYRENE CO. Ltd. May 29, 1961 [May 27, 1960; June 21, 1960], Nos. 18826/60 and 21743/60. Class 118. A fire-alarm system comprises one or more normally-open alarm contacts X1, X2, X3, Fig. 3, connected across a current source, and a current-controlling element, e.g. a rectifier MR5 connected across the alarm contacts, monitoring relay M being operated by the positive half-cycles of current from an A.C. source, and alarm relay F being operated by negative half-cycles when an alarm contact X1, X2 or X3 is closed. In another embodiment, Fig. 6 (not shown), both A.C. and D.C. is applied across the alarm contacts, rectifier MR5 is replaced by a capacitor to block the D.C., rectifiers 20, 21 are respectively replaced by a capacitor and a choke, the alarm relay F being operated by the D.C. when an alarm contact is closed. Individual indicator lamps 16, 17, 18 may be provided and are operated by the positive half-cycles of A.C. when the associated alarm contact is closed. A monitoring lamp may also be placed in parallel with each alarm indicator lamp 16, 17, 18, oppositely poled rectifiers being included in the circuit so that the monitoring lamps are normally lit by the negative half-cycles and an alarm lamp is lit by positive half-cycles when the associated alarm contact is closed. In Fig. 5, normally closed alarm contacts X3, X4 are provided in addition to X1, X2, relay M is again normally operated by positive halfcycles, but if X1 closes and X3 opens, the resistance of lamp 16 is sufficient to prevent relay M from operating. Contacts of relays M, F may be used to illuminate alarm- and faultindioating lamps, Fig. 1 (not shown). Specifications 903,342 and 909,517 are referred to.