baber/WOPTO huggingface dataset:
Patent GB-479224-A (GB)
Title: Process of and apparatus for the extraction, purification and collection of radium emanation
IPC: C01F13/00
Filed: 1936-11-10
Abstract: Radium emanation--radon--is subjected to a preliminary freezing which removes water vapour, hydrogen chloride, and organic vapours, the gaseous radon together with accompanying carbon dioxide is then solidified by freezing, and the gaseous impurities--hydrogen, oxygen, and helium--removed, the emanation is revaporized and the carbon dioxide separated by treatment with fused caustic potash.  Radium bromide or chloride is treated with hydrochloric acid in a soda-glass flask A <PICT:0479224/III/1> <PICT:0479224/III/2> encased in lead and enclosed in a safe; a quantity of the evolved gas is delivered by a Toepler pump C to a coil E surrounded by a mixture of solid carbon dioxide and acetone.  By manipulation of mercury in the base M, the partly purified radon is transferred to bulb I and thence to bulb K where it is compressed into the neck L surrounded by liquid air; the hydrogen &c. are vented through a valve 7 opened several times momentarily, and the liquid air is blown away, allowing the radon to revaporize and afterwards forced into a tube O lined with fused caustic potash which is heated to cause absorption of the carbon dioxide; the purified emanation may be delivered to a capillary tube P of gold or it may be drawn back into the neck L and again frozen by liquid air, vented for removal of hydrogen &c. and retreated with caustic potash before passing to the capillary tube.  The system is preliminarily evacuated by a diffusion pump DP and an oil backing pump OP; the degree of vacuum being tested by electric discharge in the space G.  The Toepler pump &c. may be of glass known under the Registered Trade Mark "Pyrex," secured to the lead-glass tube a<1> by a joint, Fig. 2, comprising tapered engaging ends surrounded by picene or other wax in a cup c<5> which may be integral with the tubulus c<4> on the pump.
Patent GB-1169858-A (GB)
Title: A Castor for Furniture
IPC: B60B15/00
Filed: 1968-06-28
Abstract: 1,169,858. C a s t o r s . CONTINENTAL GUMMI-WERKE A.G. 28 June, 1968 [15 July, 1967], No. 30847/68. Heading A4U. [Also in Division B7] A castor for furniture comprises a metal wheel body 1 rotatably mounted on an axle 3 by a boss 2, and a tyre ring 4 tensionally gripping the body and consisting of a base portion 5, of hard rubber or plastics, and a thinner tread portion 6, of softer rubber or plastics, cemented or vulcanised to the base 5 at 8. The tread surface 7 is spherically curved on a radius of curvature equal to the outer radius of the base portion.
Patent GB-324635-A (GB)
Title: Improvements in or relating to a process for the operation of steam heated dryers andapparatus therefor
IPC: F26B25/22
Filed: 1928-10-25
Abstract: 324,635. Gewerkschaft Gustav, and Aocherblom, O. Oct. 25, 1928. Fluid-actuated valves. - The pressure of the steam supplied to the drier 1, Fig. 1, is controlled by a regulator 11 comprising a mercury balance having two connected chambers 42, 43, Fig. 4, connected by flexible tubes 40, 41 to the steam supply pipe 7 and its Venturi throat 16. The balance determines the position of a shield 48 in front of a nozzle 49 supplied from a pump 50, and thereby actuates servo-motors 54, 25 which control respectively a motor 3, driving the drying drum, and a distributing valve 19 which connects the pipe 7 with pipes 20 - - 23 supplying steam at different pressures. In a further modification, the temperature of the steam is controlled by a hygrostat 76 connected to the drier outlet, and a thermostat 64 in the supply pipe 7, acting through fluid relays 65, 66 on valves 68, 70 which control respectively a by-pass of the heater 72, and a water jet 75.
Patent GB-1392436-A (GB)
Title: Decorative slabs and blocks
IPC: B28B19/00
Filed: 1971-07-01
Abstract: 1392436 Table tops K R HOWARD 22 June 1972 [1 July 1971] 30950/71 Heading A4H [Also in Divisions B5, B6 and E1] A table top comprises a body of concrete 16, Fig. 5 having embedded plastics strips 4 in one or more faces, separating surface areas 7, 8 of differing finish or colouring. The strips 4 form an irregular pattern or a gridwork Fig. 6 and can be integral with a transparent or translucent sheet that forms a protective covering for the slab. The slab faces may embed additionally patterned plastics sheets, or decorative webs or medallions. Moulding of the slab is described (see Divisions B4-B5).
Patent GB-463106-A (GB)
Title: Improvements in and relating to dough moulding machines
IPC: A21C11/08
Filed: 1935-09-19
Abstract: 463,106. Moulding dough. KREMMLING, [GEB. FUCHS], J. Sept. 19, 1935, No. 31017/36. Convention date, Aug. 6, 1935. Divided out of 25978/35 under which a Specification was laid open to inspection under Sect. 91 of the Acts, April 9, 1936. [Class 87 (ii)] Relates to dough-moulding machines of the kind having a rotary drum 26 with mould recesses into which the dough is forced and from which the dough shapes are extracted by an endless discharge band 25 enveloping a portion of the drum and supported on upper and lower guide rollers 31, 32. In order to ensure the adhesion of the shapes to the band, excess pressure is applied to the shapes during their extraction by covering the upper roller 31 with a rubber sleeve 33, and mounting that roller adjustably with respect to the drum. In a modification, an endless rubber band passes around the supporting rollers 31, 32 beneath the discharge band 25.
Patent GB-172014-A (GB)
Title: Improvements in furnace grates
IPC: F23H7/06
Filed: 1921-11-22
Abstract: 172,014. Martin, J. Nov. 26, 1920, [Convention date]. Air, supplying; grates.-Hot air from the closed chamber e below the grate is supplied to the front of the grate to ignite the fresh fuel, through the perforated top g of a small upper chamber in communication with the chamber e through a valve-controlled opening f. The air supply to the chamber e is consituted by air escaping from the hollow air-cooled fire-bars of the step grate, the amount of air so escaping being in part under control by means of valve-controlled outlets h in the undersides of the fire-bars. more especially the lower bars where less combustion air is needed.
Patent GB-1496913-A (GB)
Title: Squeeze printer for papers or stacks of papers of varying thicknesses
IPC: B41J9/26
Filed: 1975-07-25
Abstract: 1496913 Selective printing ADDMASTER CORP 25 July 1975 [25 July 1974] 31262/75 Heading B6F A squeeze printer includes a flexible platen 143, which impresses a paper held in receptacle 37 against type wheel 11, and an actuating roll 56 eccentrically movable on shaft 50 for so moving the platen 143 via interposer 57. Each type wheel 11 on the shaft 12 is rotatable by a sector 18, which is stepped by pawl 27 when the selected character on the wheel 11 arrives in the print position. The type wheels 11 are in groups, there being one platen and interposer per group. The platens 143 are of thin, hard, flexible material and the interposers have heads 58 of elastomer. Actuator 67, when energized, removes an interposer 57 to the dotted line position so preventing impression of its associated group of type wheels 11.
Patent GB-1255726-A (GB)
Title: A process for preparing 2-butene-1,4-diol from dichlorobutenes
IPC: G01G13/08
Filed: 1969-06-20
Abstract: 1,255,726. Butenediols. TOYO SODA MFG. CO. Ltd. 20 June, 1969 [24 June, 1968; 2 July, 1968], No. 31328/69. Heading C2C. 2-Butene- 1,4-diol is prepared by hydrolysing 1,4-dichloro-2-butene or a mixture of dichlorobutenes in the presence of water and a formate of a Group 1 A  or IIA metal (e.g. Na, K, Ca) at an elevated temperature below 150‹ C. If copper, iron or zinc or compounds thereof are present 3,4-dichloro-1-butene is also largely converted to the 1,4-diol. Otherwise it remains substantially unreacted. Some 3 -butene- 1,2- diol may be present in the product. The starting material may be the product from vapour phase chlorination of butadiene.
Patent GB-229432-A (GB)
Title: Improvements in or relating to draft tubes for water turbines
IPC: F03B11/02
Filed: 1923-12-13
Abstract: 229,432. White, A. E., (Wellman Seaver Morgan Co.). Dec. 13, 1923. Working-fluid supply. - Relates to discharge tubes for water turbines having a bend therein and increasing in cross-sectional area from inlet to outlet, and consists in forming the portion in advance of the bend so that it converts the circular stream of water leaving the runner into a narrow elongated sheet. To this end the side walls 11, 11 of this portion of the tube are made divergent while the front end rear walls 12, 12 preferably converge to the bend. The portion 14 beyond the bend may have an upper sloping wall 17, a pier 18, and a roof projection 19.
Patent GB-446675-A (GB)
Title: A new or improved valve for controlling the flow of fluid
IPC: F24H9/20
Filed: 1934-11-02
Abstract: 446,675. Valves. PARKINSON STOVE CO., Ltd., and BARNES, H. V., Stechford, Birming- ham. Nov. 2, 1934, No. 31445. [Class 135] A valve device for controlling the supply of gas to the burner of a gasheated fluid heater is arranged to be under the control of the flow of fluid to or from the heater and also of the temperature of the pilot flame. In the form shown in the Figure, the main gas valve is carried by an actuating diaphragm r and normally held closed by a spring s. The chamber below the diaphragm is connected by a passage v with the throat of a Venturi w through which the outflowing water passes and by a passage x with atmosphere under the control of a valve y oper - ated by a bi-metallic strip subject to the heat of the pilot flame. When this flame is burning the vent is closed, permitting the suction produced by the Venturi to hold the gas valve open against the action of the loading spring. In a modification, the suction effect is produced by a Venturi in the water inlet connection, and in a further modification the valve is inverted so that it may be weight loaded.
Patent GB-465804-A (GB)
Title: Improvements in or relating to apparatus for measuring hardness or strengths of materials
IPC: G01N3/48
Filed: 1935-11-13
Abstract: 465,804. Testing hardness of materials. WILLIAMS, J. F. Nov. 13, 1935, No. 31447. [Class 106 (ii)] Portable apparatus for testing hardness of materials comprises a spring-pressed plunger 11 having at one end a striking element 12 and adapted to be released by the action of pulling a trigger 27, the impression made by the element 12 in the material under test being measured with the aid of a microscope carried together with a lamp in the casing 23 forming the handle of the apparatus. The compression of the spring 16 is adjusted by moving a plunger 17 by a screw rod 21, the plunger 17 carrying an indicator moving over a scale. A mathematical formula is given for determining the relation between the compressive strength of concrete and the diameter of the impression therein effected by the device. The spring 16 may be replaced by a compressed-air device.
Patent GB-175362-A (GB)
Title: Improvements relating to tanning
IPC: C14C3/00
Filed: 1920-11-08
Abstract: 175,362. Carmichael, T. B., and Ockleston, W. H. Nov. 8, 1920. Mineral tanning; vegetable tanning; tanning with special chemicals; combination tanning processes.-After mineral or vegetable tanning, hides are soaked in an aqueous solution of pyridine to fix the tanning-elements and permit subsequent washing and rapid drying without sweating or exudation to cause streaking or discolouration. The hides are usually soaked for four to twelve hours in a 10 to 25 per cent solution of pyridine. In the case of vegetable-tanned hides, subsequent washing is effected in a 5 per cent solution of oxalic acid or in weak aqueous solutions of other organic or inorganic acids, such as formic or sulphuric acid. The application of the treatment to chrome and alum tanning processes is referred to.
Patent GB-835334-A (GB)
Title: Multiple chambered tire
IPC: B60C5/12
Filed: 1957-10-09
Abstract: In a safety tubeless tyre and wheel rim assembly wherein the air space is divided into inner and outer chambers by an annular flexible air-impervious diaphragm (see Group XXXIV), slip friction between opposed outer and inner surfaces of the diaphragm and tyre respectively when the diaphragm becomes operative on collapse of the outer chamber is reduced by providing on one or both such surfaces a layer of rubber having a lubricant physically embedded therein.  The lubricant used must be heat stable, and incompatible with the rubber base to prevent absorption thereby.  Suitable solid lubricants are those which have flat cleavage planes, such as graphite, mica and molybdenum disulphide, and these may be used in amounts up to 40% by weight of the mix.  Liquid lubricants may be used either alone, or in combination with a solid lubricant, in amounts up to 5% of the mix, and such liquid lubricants include silicone oils, glycerine, castor oil, olive oil, transformer oil and like non-drying triolein oils or a chlorinated bi-phenyl.  The rubber base of the mix may be natural, GR-S, GR-A, neoprene or butyl rubber or compatible blends thereof, and the lubricant may be incorporated in the base rubber by means of a banbury mixer, warm-up mill or the like.  The composition may include the usual anti-oxidants, accelerators and vulcanizing agents and may be self-curing.  The Specification includes a specific example of a composition based on 70/30 blend of natural rubber and a 75/25 copolymer of butadiene/styrene, in which blend is embedded 60 parts of graphite and 10 parts of castor oil. Specification 801,994 is referred to.
Patent GB-812323-A (GB)
Title: Improvements in or relating to electrical control circuits
IPC: H03K19/084
Filed: 1957-10-09
Abstract: 812,323. Semi-conductor and thermionic discharge tube logical switching circuits. MINNEAPOLIS-HONEYWELL REGULATOR CO. Oct. 9, 1957 [Oct. 9, 1956], No. 31619/57. Class 40 (6). A circuit employing two diodes 14, 15 having different thresholds of conduction is arranged so that diode 15 may be rendered non- conductive by a signal transmitted to it through the other diode 14. Assuming the diodes 14, 15 to be made of germanium and silicon with low and high thresholds of conduction respectively, when switch 10 is closed the potential occurring at junction 16 due to resistor 17 connected to the supply B- is insufficient to render diode 15 conductive and no output occurs. When switch 10 is opened, the potential of junction 16 falls, rendering diode 15 conductive so that an output potential arises. A number of inputs 14-1 may be paralleled so that an output only occurs when all the switches 10 are open. The switch 10 may be replaced by. a transistor 20, Fig. 3, and the output of the circuit fed to a further transistor 22. With a negative-going input the collector of transistor 20 is brought very near to earth so that diode 14 conducts and diode 15 is held cut off which in turn holds transistor 22 non-conducting and no output appears. With no input to transistor 20 the junction 16 falls in potential, provided all similar transistors are non-conducting, and transistor 22 conducts to provide an output. By employing two inputs 11A, 11B, Fig. 4, it can be arranged that with the input to either circuit open-circuited, base current flows in transistor 25 to provide an output. In a modification, Fig. 5, circuits 11C, 11D are arranged in the base circuits of transistors 28, 29 so that an output occurs only when the input to the circuits 11C, 11D are both given a high impedance. It is stated that the diodes 14, 15 may be of the thermionic type.
Patent GB-420719-A (GB)
Title: Improvements in wringing and mangling machines
IPC: D06F45/18
Filed: 1933-11-14
Abstract: 420,719. Mangles and wringers. ENTWISLE & KENYON, Ltd., and REDFEARN, J. P., Ewbank Works, Accrington. Nov. 14, 1933, No. 31662. [Class 138 (ii)] In a folding mangle or wringer wherein the turnover frame B is lowered and raised by the engagement of a gear wheel C with a rack D secured to the stand frame A the rack is rotatably mounted on a stud a on the stand frame and is overbalanced by a spring or weighted arm W so that it automatically swings out of engagement with the gear wheel C as the turnover frame reaches its folded position. The rack is rotated counterclockwise manually, when the turnover frame is to be raised, to a position limited by an adjustable stop d<1>. Movement of the rack clockwise is limited by another adjustable stop d carried by the rack and engaging a projection on the stand frame, or by the engagement of the weighted arm W with a pivoted stop E carried by the stand frame. In the form shown in Fig. 4 the stop E is controlled by a weight W<1> and is provided with an arm e which, in the operative position of the turnover frame, engages beneath the projection b of the turnover frame with which the catch b engages. On releasing the catch and moving the turnover frame counterclockwise somewhat, the stop E rotates counterclockwise so that the weighted arm W automatically rotates the rack into engagement with the gear wheel C.
Patent GB-745598-A (GB)
Title: Improvements relating to the production of tyre cord and like yarn
Inventor: RIDGWAY FRANK
IPC: D01H1/00
Filed: 1953-11-16
Abstract: 745,598. Twisting yarns &c. ARUNDEL, COULTHARD & CO., Ltd. Nov. 10, 1954 [Nov. 16, 1953; Feb. 24, 1954], Nos. 31680/53 and 5409/54. Class 120 (2). Tyre cords and like yarns are produced on twisting units comprising a plurality of flyertype uptwisting spindles which deliver yarns to a ring and traveller cabling spindle driven in a direction opposite to that of the uptwisting spindles, all the spindles being in line and having means for simultaneous braking. Yarns from uptwister bobbins a pass through flyers d, lappet guides e, fixed guides f and rollers g to lappet guides h, travellers j and cabling spindles i. Drive to the spindles is from two separate shafts carrying belt pulleys for either the uptwister or cabling spindles. The shafts are connected by change gears whereby the speed of the uptwisting spindles and the delivery rollers may be altered. In order to stop all the spindles of a unit simultaneously, a pedal 14 is arranged to operate a cross-member 17 to raise rods 18, 19 acting on cross-member 20 and members 22, 27 to turn pivoted brakes into contact with flanges 26, 28 on the spindle wharves. According to the first Provisional Specification, alterations in the amount of twist imposed may be effected by altering the diameters of the spindle wharves and also stretching cones may be employed instead of delivery rollers.
Patent GB-780437-A (GB)
Title: Improvements in or relating to electric heating apparatus
Inventor: LENG THOMAS RICHARD
IPC: B29B13/02
Filed: 1954-11-02
Abstract: Plastic sheets, e.g. of P.V.C., polystyrene, methyl methacrylate or plasticized cellulose acetate are heated by radiant heat from lengths of electric heaters [see Group XI] placed over them, and the heaters or the sheets or both are reciprocated laterally to ensure even heating.  The sheets when soft may be drawn down into vacuum moulds, which may also be reciprocated, or may be removed to other presses.
Patent GB-285607-A (GB)
Title: Improvements in and relating to refrigerators
IPC: F25D3/04
Filed: 1926-12-14
Abstract: 285,607. Ausdal, N. W. van. Dec. 14, 1926. Refrigerators. domestic, shop, and like.-A closed storage chamber or cooling case for fish or other goods is provided with one or more open water tanks 5 extending over the greater part of the floor and cooled by a refrigerating plant 7 which may be arranged in a space 6 between the tanks or outside the chamber, a part only of the water being frozen so that the remainder preserves a moist atmosphere at about freezing temperature. The fish &c. is supported on perforated shelves 9, 12 accessible through a hinged lid 2, and icemoulds 10 may be arranged in the space 6. Some ice may be packed between layers of the fish &c. The walls of the chamber are insulated by cork or other material.
Patent GB-867471-A (GB)
Title: Paper or like pulp refining apparatus
IPC: D21D1/32
Filed: 1959-09-17
Abstract: 867,471. De-aerating and refining paper pulp &c. BAUER BROS. CO. Sept. 17, 1959 [Oct. 15, 1958], No. 31787/59. Class 96. Paper pulp &c., particularly pulp liable to foam, is supplied under pressure through a rotary union 15 to a hollow shaft 4, rotated by a motor 5, to the interior of a disc refiner: the disc 3 of which is driven by a motor 10, and is axially adjustable at 13. Pulp discharged outwardly from between the discs 2 and 3 falls freely to a chest 18 under reduced air pressure due to a suction pump 14. The pulp, thus deaerated, is pumped out at 22, part being returned if necessary to the chest 18, through a valve 25, float-controlled at 26 to maintain the level of pulp in the chest 18. In a modification, air is evacuated by a centrifugal separator interposed, in the pipe 17 between the refiner and the chest 18.
Patent GB-641372-A (GB)
Title: Improvements in or relating to a pump for conveying molten metal
IPC: F04D7/06
Filed: 1947-12-03
Abstract: 641,372. Centrifugal pumps. WEIL, W. W. Dec. 3, 1947, No. 31922. Convention date, Dec. 6, 1946. [Class 110(i)] [Also in Group XII] In a pump for conveying molten metal from a bath, all those parts which are immersed in the bath, including the impeller, casing and driving shaft, are of graphite or silicon carbide. The pump casing 5, Fig. 1, rests within a bath of molten aluminium 1 on a base 4, to which it is secured by dowel pins 27. The base may be supported on legs. Metal enters the pump by way of a transverse passage 8 and is discharged through a duct 13 to a conduit 14. To prevent seizing of the pump shaft due to metal passing upwardly around the shaft and solidifying, slots 31 may be formed in the casing 5 to allow the metal to escape. Pump parts in contact with the molten metal are of graphite or silicon carbide, with clay, pitch or tar as a binding material. An air motor 20 drives the pump through a flexible coupling 24 and a split collar 25 which is attached to the shaft 10 by set screws 26. The frame 17 supporting the motor is adjustably attached to the casing 5 by set screws 16. In a modification, Fig. 5, the pump has two separate outlet ducts 43. The casing is made in two interlocking parts 32, 35, the latter also interlocking with the base 38; dowel pins may be used.
Patent GB-996380-A (GB)
Title: A boiler for a gas fire
Inventor: OATLEY ARTHUR FREDERICK
IPC: F24C13/00
Filed: 1960-09-06
Abstract: 996,380. Hot-water boilers. OATLEY TECHNICAL DEVELOPMENTS Ltd. Sept. 6, 1961 [Sept. 6, 1960], No. 31955/61. Divided out of 996,379. Heading F4A. A boiler adapted to be detachably fitted to a gas fire, for installation and connection to flow and return pipes while detached from the fire is heated by conduction or radiation from the fire without the products of combustion of the fire contacting the boiler surface. In the embodiment shown, the gas fire 8 consists of gas burners 37 and radiants 7. The back 33 of the radiants 7 rests on a flange 32 of the boiler 6 to form an air space 38. The boiler 6 consists of two sheets 19 and 20 flanged at their edges to overlap one with the other to enclose a water space 21. The sheets 19 and 20 have horizontal ribs 22 in order that water from inlet connection 23 should flow in a sinuous path to outlet connection 24 (Fig. 4, not shown). The flow and return pipes 17 and 16 have isolation cocks, which, when the boiler 6 is attached to the gas fire 8 in a fireplace opening 40, are accessible only when the apparatus is dismantled. The fireplace opening 40 is closed by plate 13 which is apertured to fit over flow and return pipes 17 and 16. The back 33 of radiants 7 is of substantially the same shape as the front face 19 of the boiler 6. The boiler is attached to the fire by means of lugs 27 and screws 28 accessible from the front of the fire after the removal of detachable plates 41 and 42. In a modification (Fig. 5, not shown) instead of detachable plates 41 and 42, side plates are provided on the gas fire.