baber/WOPTO huggingface dataset:
Patent GB-844562-A (GB)
Title: A safety device for gas cylinders
IPC: F16K17/34
Filed: 1958-10-13
Abstract: 844,562. Valves. BATAAFSCHE PETROLEUM MAATSCHAPPIJ N.V., DE. Oct. 13, 1958 [Oct. 14, 1957], No. 32582/58. Class 135. A safety device for a gas cylinder comprises a blind tube 7 of resilient material which is adapted at its open end to fit the inlet 3 of the valve of a gas cylinder and is provided with a slot 9 in communication with the inside of the tube, the resiliency of the tube and the dimension of the slot being such that when an excessive pressure difference is established across the device the deformation of the material causes the lips of the slot to come together to restrict the discharge from the cylinder. In another embodiment the slot is provided at some distance from the bottom of the tube and in a further embodiment the slot is cut in the bottom of the tube in a plane parallel to the axis of the tube. The tube may be provided with a hemispherical bottom.
Patent GB-300210-A (GB)
Title: Improvements in or relating to the production of negative colorrecord cinematograph films
IPC: G02B27/14
Filed: 1928-11-08
Abstract: 300,210. Pilny, A., (Assignee of Pilny, 0.). Nov. 8, 1927, [Convention date]. Colour kinematography.-In the production of pairs of colour-record images by means of one lens 2 and a prism system 3, 4, a single film folded longitudinally to form parts 15, 16, at right angles to each other is employed. The film may have four rows of perforations 19, and the emulsion may be towards or away from the prisms. The film may be wound on the spools either in folded or unfolded condition, and rollers &c. may be provided to guidel the parts into position for exposure. Colour screens 11, 12 are provided on the prisms. The folded negative film may be used to produce positive films on film stock having emulsion on both sides, the positive film being enclosed by the parts of the negative film and exposure being effected from both sides.
Patent GB-245445-A (GB)
Title: Method of and apparatus for the regulation of liquid level in a pressure vessel
IPC: F22D5/06
Filed: 1925-12-28
Abstract: 245,445. Campbell, G. Jan. 5, 1925, [Convention date]. Levels, regulating.-To regulate the liquid level in a steam boiler or other pressure vessel, liquid and vapour are allowed to escape from the vessel at the normal liquid level through one or more orifices, the variations in pressure on the outlet side of the orifices resulting from the passage of either liquid or vapour or a mixture of both being utilized for operating devices controlling the supply or withdrawal of liquid or vapour. Water or steam passes from a column 5 connected to the steam and water spaces of a boiler through a pipe 9 leading to a number of superposed chambers 40 having restricted outlets 36 - - 39. The pressure in the lowest chamber is communicated through a pipe 48 to a piston 18 on the spindle of the feed-valve 16. The pressure in the lowest chamber and above the piston is lower when steam passes from the boiler than when water passes, and the feed-valve is then opened by the pressure of the incoming water. A strainer 26 may be fitted in the pipe 9.
Patent GB-447412-A (GB)
Title: Improvements in colour photography and kinematography
IPC: G03C7/26
Filed: 1934-11-14
Abstract: 447,412. Colour photography. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Cinecolor Inc. ; 201, North Occidental Boulevard, Los Angeles, U:S.A.) Nov. 14, 1934, No. 32813. [Class 98 (ii)] Two superposed images, one recording the blue to green and the other orange to red colour values, are produced on a film which is developed, fixed, and washed, and the developed and fixed images are treated with a priming solution containing a protective colloid to prepare the images for colouring. The negatives may be produced in a light-splitting camera, or by the use of a bi-pack comprising a front orthochromatic film having a red dye thereon and a rear panchromatic film. The two negatives are printed on to a film having a sensitive emulsion on each side of the base with a light-restraining dye in between. After developing and fixing, the film is immersed in a priming solution containing potassium iodide, potassium iodate and pepsin, or potassium iodide, acetic acid, and pepsin, the surface moisture is removed from the film by an air blast, and the side of the film which was printed from the blue-to-green colour value negative is bleached in a solution containing potassium iodide, iodine, acetic acid and sodium acetate. The film is washed, immersed in a potassium metabisulphite clearing solution, washed, and coloured orange-red in a bath containing either Fuchsine and Auramine O or Safranine Y and Rhodamine B. In a modification, a bath containing only Safranine Y is used and the film is immersed in mercuric nitrate solution to produce a yellow mercuric iodide image. The other image recording the orange to red colour values is then toned blue-green by immersing the film in a bath containing ferric ammonium oxalate, potassium ferricyanide, ammonium chloride, and hydrochloric acid, or in a bath containing potassium oxalate, ferric nitrate, hydrochloric acid, potassium ferricyanide, and potassium bromide. The mercuric nitrate treatment may be combined with the blue-toning operation. The blue toned images are fixed in weak sodium thiosulphate solution, and the film is washed, dried, and varnished. A sound track may be provided either in black and white or on the blue toned side of the film. The process may be applied to a film having either a single thick emulsion or two superposed emulsions, and in this case potassium iodide may be added to the final fixing bath.
Patent GB-1179437-A (GB)
Title: Amplifier
IPC: H03F3/343
Filed: 1967-07-18
Abstract: 1,179,437. Transistor amplifying circuits. INTERNATIONAL BUSINESS MACHINES CORP. 18 July, 1967 [19 July, 1966], No. 32855/67. Heading H3T. An amplifier comprises a plurality of cascaded stages 1-1, 1-2 ... 1-n, (40, 2), with an overall negative feedback path (via resistor 3) and a feed-forward path from the input to selected amplifier stages (via emitter follower 10 and capacitors 15-1, ... 15-n) to by-pass predetermined high-frequency components of the input signals around predetermined amplifier stages. The coupling capacitors 15-1, ... 15-n are so dimensioned that successively higher frequencies are by-passed around a greater number of stages. In another embodiment (Fig. 2, not shown), the capacitors 15-1, ... 15-n are replaced by resistors and resistors 30 are replaced by inductors, dimensioned to provide the same result. The high-frequency bypass provides positive feedback and increases the bandwidth. Transistor 10 may be an FET.
Patent GB-162723-A (GB)
Title: Improvements in and relating to automatic power developing motors
IPC: F03G7/10
Filed: 1919-12-31
Abstract: 162,723. Emery, T. Dec. 31, 1919. Self-driving machines and plant.-In a selfdriving motor of the unbalanced-wheel type, a number of weights or springs carried by a disc rotating on a fixed axis are caused to produce an unbalanced effect by means of arms radiating from a movable axis eccentric to the fixed axis. In a modification, the weights or springs are replaced by rollers engaging with a semicircular cam-track eccentrically disposed relatively to the fixed axis. Fig. 1 shows one form of the apparatus in which a disc 1, carrying two sets of studs 10, 11, one near the edge of the disc and the other nearer the centre, is stated to be rotated by weights 7 carried by separate loosely-mounted arms 6 pivoted on an eccentric pivot B. The weights 7 operate the disc 1 through the intermediary of rings 12, passing round the studs 10, 11. Owing to the eccentric mounting of the arms 6, the rings 12 on one side of the disc engage with the pins 10, while on the other side they engage with the pins 11, a greater mechanical advantage on one side than the other being stated to be thus obtained. The discs 1 are mounted in pairs on a common shaft A. In modifications (1) the rings 12 are dispensed with and the weighted arms 6 carry studs working in cam tracks on the discs 1, (2) the weights are carried by chains which are forced out on one side of the discs 1 by levers carried by the arms 6 so as to give a greater turning moment on one side than the other, (3) the weighted chains are replaced by endless bands maintained in tension by pulleys, (4) the pulleys are replaced by a second pair of discs 1 having arms 6 of opposite eccentricity to that of the first pair of discs so that both pairs of discs tend to rotate in the same direction, (5) the weights are replaced by springs attached at their inner ends to studs near the centre of the discs 1 and at their outer ends to bell-crank levers carried by the arms 6, (6) the weights are replaced by rollers 59, Fig. 20, carried on levers connected to the arms 6 and engaging a cam track 60, (7) springs may be used in conjunction with the levers in the previous arrangement, (8) the weights may be carried by lazytong mechanisms operated by the arms 6 so as to project to a. greater distance on one side of the disc than the other, (9) the springs used in various modifications may be replaced by cylinders of compressed air.
Patent GB-1472363-A (GB)
Title: Power shovel
IPC: E02F3/84
Filed: 1975-08-06
Abstract: 1472363 Power shovels MARION POWER SHOVEL CO Inc 6 Aug 1975 [7 Nov 1974] 32910/75 Heading E1F A power shovel comprises a system for increasingly biasing a control lever e.g. 45 or 50 towards a neutral position as the dipper approaches a predetermined limit. A hoist limit drum 60, which is rotated upon pivotal movement of a hoist frame relative to a stiff leg, has limit stops 68, 68a attached to its end plate 62, one of the stops engaging and pivoting an actuating arm 63 when the hoist frame approaches a limit of angular displacement relative to the stiff leg. A floating lever 67, pivotally mounted on the actuating arm, is therefore pivoted with the actuating arm and also pivots relative to the actuating arm, the latter pivotal movement being limited by stops 70, 71. The floating lever 67 is operatively connected to arm portion 72 of the hoist control lever 50 by means of a feedback linkage 73, the construction of which is such that a motion transmitted through the linkage  will increase steadily as a function of the force applied and the composite spring rate of the linkage. In the event of the stiff leg being in alignment with one end of a crawler unit of the power shovel, a follower 99 will be caused to move radially outwards by a cam lobe e.g. 95. The movement of the follower is transmitted by a linkage 53 to a bell crank 105 which will pivot about point 106 to assume the position shown in Fig. 7. Under these conditions as soon as a limit stop 68 or 68a engages actuating arm 63 there will be no lost motion between the stop and the linkage 73. This causes the lower limit of the hoist to be shifted upwardly to prevent the dipper from striking the end of the crawler unit. A crawl limit drum 115, which is rotated upon pivotal movement of a mast 38, has limit stops 122, 123 attached to its end plate 116, one of the stops engaging and pivoting an arm portion 117a when the mast approaches a limit of angular displacement. The lever arm 117a is operatively connected to an arm portion 124 of the crowd control lever 45 by means of a linkage 125 which is similar to the linkage 73.
Patent GB-423321-A (GB)
Title: A method of and means for producing slivers or ends of fibrous material
IPC: D01G25/00
Filed: 1933-11-25
Abstract: 423,321. Opening, cleaning, and producing slivers. BRITISH COTTON INDUSTRY RESEARCH ASSOCIATION, SHORTER, S. A., WILLIAMS, T. C., and LOCKE, J., Shirley Institute, Didsbury, Manchester. Nov. 25, 1933, No. 33002. [Class 120 (i)] Slivers, strips, or ends of cotton or other fibrous materials are produced by conveying the opened material in an air stream which is subdivided to convey the fibre in separate channels in spaced relationship, the fibre from these channels being separately collected into slivers, strips or ends, and further consolidated and forwarded. Preferably the fibre-conveying air stream is of streamline character such as that described in Specification 404,686, and in an apparatus employing such an air stream the cotton is fed by rollers 1, Fig. 1, over a delivery plate 2 to feed rollers 3, and thence presented to a rapidly revolving toothed beater 6, which projects the material in a finely divided condition into the chamber 7. A streamline flow of air is produced therein through the inlet 8 the cotton being carried forward to the cage 10 and trash deposited. The cage 10 co-operates with a roller 11 or with a second cage 11<a>, Fig. 4. The wall 13 of the chamber 7 extends to near the cage 10 while a streamer plate 14 is provided to assist the flow. The air stream is subdivided by thin vertical plates 16 fixed to the cover 17 fitting into rings 15 on the cage 10 and secured to the bar 18 which carries the adjustable stripping plate 19. The plates 16 extend into the nip 22 of the cage 10 and roller 11. The cage 10 is formed with a damper 20 while in the modification shown in Fig. 4, the cage 11<a> is formed with a damper 20<a>. In operation, the cotton and fine dust are carried on the subdivided air streams to the cage 10 the air and dust passing through the cage perforations and the cotton being condensed thereon in the form of narrow strips or ends. The ends may be passed by rollers 24 to drawing rollers 25 and there formed into slivers. The Provisional Specification describes also the interposition of a high speed dust cage of the type described in Specification 317,592, [Class 120 (i)], between the settling chamber and the sectionalized cage or cages.
Patent GB-174800-A (GB)
Title: Improvements in and relating to the control of electric generating plant and switches therefor
IPC: H02P9/00
Filed: 1920-11-23
Abstract: 174,800. Read, H. J., and Bransom, W. J. Nov. 23, 1920. Starting prime-movers, dynamo-electric machines and control circuits for; systems of charging and discharging galvanic batteries.-A supply system, comprising a battery with regulating end cells, an internal-combustion engine, and a twovoltage dynamo-electric machine or machines adapted to operate as a starting motor or motors or as a charging dynamo or dynamos, is provided with an end-cell regulating-switch having a rotary movement in one direction only and contacts adapted to control the starting and stopping of the engine. The rotary arm A, Fig. 1, of the cell-regulating switch is provided with contacts p, p<1>, one at each end of the arm, adapted to engage contacts m - - m<4> and with contacts s, s<1> adapted to engage contacts n, n<1>. In the position shown in Fig. 1, the battery q is discharging through the load circuit r and a movement of the arm A in a clockwise direction causes additional cells to be connected to the load circuit r. After the contact p has engaged the contact m, the contact s<1> bridges the contacts n, n<1> to energize the winding h of the switch g. The contact i engages contacts k, k<1> to connect the battery to the machines b, d, operating as motors, in series with a resistance l. After the engine a is started the voltage coil h<1> operates to short-circuit the resistance l. During the charging period the contact p<1> is in engagement with the contact m<4> whereby the load circuit r is connected across the dynamo b and the batterv is connected across the dynamos b, d. Further movement of the arm A causes the circuit of the winding h to be broken and the load circuit is connected to the battery through contacts m<3>, p<1>. The preferred form of switch is shown in Fig. 2. Specification 6918/14 is referred to.
Patent GB-653607-A (GB)
Title: Improvements in apparatus for harvesting seaweed
IPC: A01D44/00
Filed: 1948-12-22
Abstract: 653,607. Harvesting seaweed. MILLER. M. C. G. Dec. 22, 1948, No. 33025. [Class 6(iii)] A marine vessel used for harvesting seaweed, comprises means, such as a tube b, for supporting a cutter, the said means being fitted with resilient skids j which in conjunction with a ring d, in which the the tube b slides, enables the device to ride over any obstructions on the sea bed. The tube b houses a conveyer f which at its bottom is formed with the cutter, the latter being located near inlet ports g formed in the tube. A toothed wheel secured to the lower end of the cutter is housed in a gear box c and is driven by a flexible drive h and shaft i. Cables l, n, leading to winches p, q, and passing over booms l<SP>1</SP>, o, respectively, serve to support the tube in the required position. By this means weeds entering the ports are cut and then conveyed in the tube b to the vessel or elsewhere.
Patent GB-915570-A (GB)
Title: Process of making polyalkylene glycol dibenzoates, and resinous compositions plasticized therewith
Inventor: JR HOWARD F REEVES
IPC: C08K5/10
Filed: 1960-09-28
Abstract: Materials selected from polyvinyl chloride, polyvinyl acetate, vinyl chloride-acetate copolymers, polyisobutylene, polystyrene, butodiene-styrene copolymers, polymethyl methacrylate, rubber hydrochloride, water-insoluble cellulose esters and ethers such as cellulose acetate, butyrate, acetate-butyrate, nitrate and ethyl cellulose, and dicarboxylic acid/glycol condensates and modifications thereof, are plasticized with polyalkylene glycol benzoates.  The plasticizers are prepared by reacting, at between 50 DEG  and 175 DEG C., a polyalkylene glycol with a sufficient quantity of benzoyl halide (which may be chlorine-substituted) to react with all hydroxyl groups, removing hydrogen halide from the reaction zone at substantially the rate at which it is formed until the glycol is completely esterified and washing the ester with aqueous alkali to remove any residual hydrogen halide and unreacted benzoyl halide. The polyalkylene glycol benzoates may contain, e.g. 2-16 alkylene (ethylene or propylene) units; the esters specified are those derived from diethylene, dipropylene or polyethylene (MW 200, 300 or 400) glycols and benzoyl or/and m-chlorobenzoyl chlorides.  In general, there may be employed, e.g. o-, m- and pchloro- and 2:4- or 3:5-dichloro-benzoyl halides.ALSO:Polyalkylene glycol benzoates are prepared by reacting, at between 50 and 175 DEG C., a polyalkylene glycol with a sufficient quantity of benzoyl halide (which may be chlorine-substituted) to react with all hydroxyl groups, removing hydrogen halide from the reaction zone at substantially the rate at which it is formed until the glycol is completely esterified and washing the ester with aqueous alkali to remove any residual hydrogen halide and unreacted benzoyl halide.  The polyalkylene glycol benzoates may contain e.g. 2-16 alkylene (ethylene or propylene) units; the esters specified are those derived from diethylene, dipropylene or polyethylene (MW 200, 300 or 400) glycols and benzoyl or/and m-chlorobenzoyl chlorides.  In general, there may be employed e.g. o-, m- and p-chloro- and 2:4- or 3:5-dichloro-benzoyl halides.
Patent GB-325486-A (GB)
Title: Improvements in, and relating to the manufacture of, boxes, cases, or similar containers, particularly for housing or containing switches and other electrical appliances
Filed: 1928-11-14
Abstract: 325,486. Crabbree, J. A., and Dolphin, J. R. Nov. 14, 1928. Moulding boxes and cases; moulding resins.- In making boxes and cases, particularly those for housing or containing electric switches, fuses or other electrical appliances, from synthetic resin powder or other mouldable insulating material with a metal reinforcement embedded in the insulating material during the moulding thereof, the outer part of the box is first shaped in a die by a punch to which the previously shaped metal reinforcement has already been applied and which is thus simultaneously made to adhere to the shaped outer part of the box, the punch is then withdrawn and the material for the inner part of the box is introduced into the reinforcement and moulded to cover it. The sides of the reinforcement are shallower than the sides of the box so that the reinforcement is wholly covered at its edges during the moulding operation. The metal of the reinforcement has, preferably, the. same or about the same coefficient of expansion as the insulating material and the reinforcement may be of perforated or meshed metal or wire gauze or latticed material. According to the Provisional Specification, the reinforcement may consist of a trough shaped stamping with separate end pieces and separate reinforcing pieces may be applied at the edges or angles to strengthen the product; or the box may be provided with an external metal reinforcement.
Patent GB-333465-A (GB)
Title: Improvements in and relating to illuminating apparatus
IPC: F21V5/00
Filed: 1929-11-01
Abstract: 333,465. Holophane, Ltd., (Dorey, W. A., and Rolph, T. W.). Nov. 1, 1929. Buoy and like lamps.-A boundary light for aviation fields comprises a light source 2 and a prismatic globe 3 which has a lower section 8 of reflecting prisms, an intermediate section of refracting prisms refracting the light upwardly and an upper section 5 of prisms refracting the light outwardly , the three sections co-operating to form a conical beam of high intensity. The zone 8 has reflecting prisms 9 on its outer surface and horizontal refracting prisms 10 on its inner surface, so as to re-direct incident light to the bowl part 5. The zone 11 has a smooth outer surface and a horizontal refracting inner surface 13. The bowl 5 has a convex smooth outer surface and horizontal refracting ribs 15, preferably arranged above a smooth inner surface portion 21. Coloured glass may be used for the globe.
Patent GB-636779-A (GB)
Title: Improvements in or relating to animal enclosures and cleaning means for the floors thereof
IPC: A01K31/04
Filed: 1947-12-17
Abstract: 636,779. Poultry and like battery cages. STARKEY, B. H., STARKEY, G. J., and WELLS, E. A. G. Dec. 17, 1947, No. 33298. [Class 5 (ii)] [Also in Group X] Poultry and like droppings from cages 1, 2 are scraped from inclined trays 3 and fall into a central channel 4 from which they are removed by a rotatable screw 5. The scrapers 6 are actuated by hand or power through a reciprocating rod 8 having crossmembers 10 and crossed-links 9. Endwise movement of the scrapers 6 is prevented by the upturned ends 13 of the trays. Central shoots formed by plates 7, 19 guide the scrapings.
Patent GB-1523121-A (GB)
Title: Furnaces
IPC: C21D9/63
Filed: 1975-10-24
Abstract: 1523121 Heat treatment furnaces; circulating furnace atmospheres ASSOCIATED ELECTRICAL INDUSTRIES Ltd 24 Oct 1975 [29 July 1974] 33323/74 Heading F4B Gas is introduced into a furnace for heating continuously moving metal strip 1 through a plurality of spaced apart injectors 11 so constructed and arranged as to cause a substantial proportion of the gas, after passing over said metal strip 1, to be recirculated through the furnace chamber 2. The gas is heated, either prior to (see Figs. 1 and 2, not shown) or after its entry into the furnace, by suitable heating means. As shown the heating means 14 comprise electric heating elements, but alternatively gas burners may be used. Gas is fed to the injectors 11 by one or more blowers 9. Gas escaping from the ends of the furnace is made up by fresh gas supplied to the blower 9. Part of the gas from the upper part of the furnace chamber 2 may be recirculated through the blower 9 to reduce the quantity of fresh makeup gas required. A heat exchanger 15, which is provided for reducing the temperature of the recirculated gas prior to it entering the blower, may be used to raise the temperature of the fresh make-up gas (see Fig. 4, not shown). Means (not shown) may be provided for varying the proportions of the recirculated and fresh gas fed into the furnace through the injectors. The heated circulating gas passes through an apertured plate 7 which causes it to be directed in the form of jets on to the lower surface of the strip 1. The gas pressure may be sufficient to provide a gas cushion supporting the strip 1. In a modified furnace construction (Fig. 5, not shown), a pair of horizontal apertured plates (7A, 7B) are provided to direct the circulating gas in the form of jets on to both surfaces of the strip.