baber/WOPTO huggingface dataset:
Patent GB-679721-A (GB)
Title: Improvements in or relating to hoists
IPC: B66D3/26
Filed: 1949-06-07
Abstract: 679,721. Winding and paying-out apparatus. KING, D. M. May 8, 1950. [June 7, 1949] No. 15141/49. Class 78(v). [Also in Group XXXVII] The chain of a hoist is provided with a limit attachment consisting of an element adapted to fit round and encase a link of the chain so as to increase the effective thickness of the link. The invention is applied to a hoist consisting of a driven sprocket 16, Fig. 6, around which a chain 17 is passed, the chain supporting a load, and wherein pivoted chain guards 18 are employed for causing opening of the series-connected switches 19 when a limit attachment on the chain reaches them, or when the chain jumps off the sprocket, the opening of the switches stopping the drive to the sprocket. The limit attachment 20 consists either of two halves 10, Fig. 1, which encase a link 11 of the chain, the halves being connected by bolts 13, or of a spring clip 14, Fig. 4, which can be sprung on a link and made to fit the link tightly by means of a bolt passed through the lugs 15. Specification 557,040 is referred to.
Patent GB-748450-A (GB)
Title: Improved drive arrangement for shafts such as of doffing rollers in cotton gins
IPC: D01B1/46
Filed: 1954-05-22
Abstract: 748,450. Cotton gins. KNIGHT, F. H. Oct. 19, 1954 [May 22, 1954], No. 15142/54. Class 120 (1). [Also in Group XXIV] A friction drive between the shafts 15, 12 of doffing and ginning rollers of a cotton gin comprises large and small friction wheels forming an assembly 21 carried on a pivoted frame 17 and engaging friction wheels 13, 16 respectively on the shafts 12, 15. The friction wheels are preferably of V-shape for lateral positioning and the frictional engagement is maintained by a weight 19. The drive can be readily disconnected by lifting the weighted end of the frame.
Patent GB-155313-A (GB)
Title: Improvements relating to the production of ammonia
IPC: C01C1/04
Filed: 1919-06-17
Abstract: 155,313. Rollason, A. June 17, 1919. Ammonia.-A mixture of air and steam is preheated in a pipe C and a jacket B of a producer A, and is then passed through grates A<1> into the fuel, the level of which is kept constant by a bell D. The temperature in the producer is maintained below 950‹ C., and the air is wholly deprived of oxygen. The exit gas is cooled to 500‹ C. by a cooler or by steam admitted from a pipe F<2>, and is then passed through a tube F<1> surrounded by an outer tube F, and is then heated to 550-600‹ C., by which means it is stated that the molecules of nitrogen are dissociated into atoms. The gases pass from the pipe F<1> through a column U of coke, mixed with five per cent of limestone maintained by external heating at 700-800‹ C. Ammonia is produced, and is recovered after cooling to 90‹ C. The remaining gas is introduced into the combustion chamber at L and burnt, the products passing through the casing I to the space between the walls G and G<1> and thence as shown by the arrows.
Patent GB-386209-A (GB)
Title: Improvements in rotary furnaces for combustion of town refuse and the like
IPC: F23G5/20
Filed: 1932-05-27
Abstract: 386,209. Stuffing-bos substitutes. CHRISTENSEN, A., 147, Oresundsvoj, Copenhagen. May 27, 1932, No. 15152. [Class 122 (v).] A stuffing-box between a stationary grate 6 and a rotary furnace 4 is adapted to allow ash &c. to fall into a pocket 11 from which it can be removed through an airtight gate 12. The front end of the rotary furnace 4 is encircled by a cylindrical frame 8 built into the rear wall 5 of the stationary f u r - nace and provided at its lower part with holes 9 towards which fine ash is directed by scrapers 10 on the rotary furnace, the ash falling into the pocket 11. Between the frame 8 and an annular rib 14 on the furnace fitted with replaceable sectors 14a a stuffing-box is provided comprising a cylinder 15 axially slidable in a packing ring 16 and fitted at the rear with a ring 19, having replaceable sectors 19a, rotation of the ring being prevented by co-operating devices 22, 23. The ring 19a is pressed upon the rib 14a by plate springs 21. To minimize penetration of ash to the stuffing-box the frame 8 and the rotary furnace are provided with meshing annular ribs 24, 25, and any ash which penetrates is removed through shutters 26.
Patent GB-441542-A (GB)
Title: Improvements in and relating to hopper ventilators
IPC: F24F7/00
Filed: 1934-05-22
Abstract: 441,542. ventilators. HUGHES, B. D., 22, Newman Street, Oxford Street, London. May 22, 1934, No. 15314. [Class 137] A hopper ventilator is formed of a plate or sheet of metal 1 the ends of which are bent at right angles to form side walls 2, and so that the top of the plate is thrown outwardly. The side walls may be flanged as at 3, Fig. 1, to enable the ventilator to be secured to a wall, or, as in Fig. 5, bent to form channels 7 in which slide projections 8 formed on the vertical side edges of a wall box 6. Alternatively, the sides of the wall box and of the ventilator may be formed of a single sheet of metal.
Patent GB-196878-A (GB)
Title: Improvements in dry batteries
IPC: H01M12/06
Filed: 1922-05-31
Abstract: 196,878. Soc. Anon. le Carbone. May 1, 1922, [Convention date]. Arrangements; electrodes; air supplied.-In. a pile of cells joined in series, each cell consists of a zinc disc a covered with blotting paper b impregnated with a solution of ammonium chloride and zinc or calcium chloride, above which is a disc c of paste electrolyte and a disc d of charcoal covered where it is liable to come into contact with electrolyte with a colloidal substance preventing the passage of moisture but allowing gas to pass. The colloidal substance may consist of a paste of 1.75 kg. of fecula and 2 litres of water mixed with 18 litres of water heated to 75‹ C. The disc c may have the same composition as the colloidal substance but with the addition of 7 kg. of ammonium chloride to the heated water. The pile may be enclosed in a casing having a square cross-section and apertures at the top and bottom. When the battery is exhausted it is immersed for a short time in a solution of ammonium chloride which passes through the apertures in the casing and becomes absorbed in the discs b, c. The discs may also be formed with holes to form internal passages to allow acces of air and electrolyte.
Patent GB-704181-A (GB)
Title: Improvements in and relating to electric incandescent lamps
IPC: H01K1/18
Filed: 1951-06-28
Abstract: 704,181. Electric incandescent lamps. BRITISH THOMSON-HOUSTON CO., Ltd. June 28, 1951 [July 1, 1950], No. 15374/51. Class 39 (2) An electric lamp comprising a sealed envelope having a focusing reflector 6 for producing a long beam of parallel rays, for use, for example, as a high-wattage spotlight connected to a normal mains supply, is provided with a pair of rigid leading-in conductors 21 which are offset inwardly at their inner end portions 24 to form end supports for a coiledcoil filament 25 consisting of three individual segments 27-29 which are interconnected at their ends and arranged substantially in an N or Z-shape in a plane passing through the axis of the reflector, the filament being provided with intermediate supports 33, 34 at the junctions of the segments to hold it centred substantially about the focal point of the reflector, with the centre segment 28 extending axially of the reflector and with its mid-point located substantially at the focal point. In order to concentrate the filament about the focal point F of the reflector the angle of divergence between the adjacent segments is preferably made relatively small, and the outer segments 27 and 29 are made shorter than the centre segment 28, e.g. about half the length. The intermediate supports 33, 34 are mounted in an insulating-bridge comprising a glass rod 35 with pairs of supporting wires 37 sealed within its ends and welded or otherwise secured to the leading-in conductors 21. A limited amount of free movement of the filament is permitted by hooking or looping the filament bights 30, 31, Fig. 2 (not shown), loosely over U-shaped hooks at the extremities of the supporting wires 33, 34, which are preferably arranged to maintain the segments tensioned between their points of support. In a modification, Fig. 3 (not shown), the end portions of the leading-in conductors are bent inwardly at right-angles towards one another, and the ends of the filament, each extending in the same direction as the segment of which it forms part, are clamped beneath the reversely bent extremities of the leading-in conductors. Specifications 515,091 and 682,500, and U.S.A. Specification 2,436,259 are referred to.
Patent GB-532518-A (GB)
Title: Improvements in and relating to heating apparatus burning gas
IPC: F24C3/04
Filed: 1939-05-24
Abstract: 532,518. Incandescent gas and like fires. CANNON IRON FOUNDRIES, Ltd.. CLAYTON, R. T., BENTON, W. E., and OATLEY, A. F. May 24. 1939, No. 15376. [Class 126] In a heating apparatus burning gas such as gas fires or radiators, a combustion chamber o is formed above gas burners f and communicates with a passage n between a refractory backing m and a vertical series of refractory heat radiating members k having spaces therebetween decreasing in area with remoteness from the burners through which pass combustion products to a canopy and flue. The radiants k as shown are in the form of refractory tubes loosely mounted in side pieces clamped between the fire casing and the refractory backing m by U-shaped plates v. The combustion chamber o is bounded in front by a wall q supported on a plate 10. A reflector 12 is arranged beneath the burners which are of non-atmospheric type. According to the Provisional Specification the radiants may be made of metal.
Patent GB-732942-A (GB)
Title: Improvements in or relating to a method for printing motion picture film in colour and light-modulating strip for use therein
IPC: G03B27/72
Filed: 1953-06-04
Abstract: 732,942. Contact printing negative colour motion picture films. LOEW'S, Inc. June 4, 1953 [June 5, 1952], No. 15410/53. Drawings to Specification. Class 98 (2). A method of contact printing a colourcorrected motion picture positive from an unbalanced colour motion picture film, e.g. a negative film, comprises (a) determining the light intensity and colour deviation corrections required in successive scenes; (b) providing on film strip sections of a length proportional to each of said scenes an opaque lengthwise portion and a parallel translucent coloured portion of uniform width selected to effect the necessary corrections on printing; (c) connecting the strip sections end-to-end in sequence to form a control film; and (d) feeding this control film preferably intermittently between a light source and a printing gate through which the positive and negative are continuously fed together in contact at a mean speed proportional to that of said positive and negative. For scenes in which for special effects or other reasons the exposure level alters, the density and hue of the coloured portion is varied along the strip of the control film corresponding to those scenes. The control film may be coloured by tinting or dyeing the support sub-stratum or a matrix layer or coating the support with dye, by processing in dye solution a black and white colour film, or exposing with colour-corrected light a lightsensitive colour film.
Patent GB-1177483-A (GB)
Title: Flexible Sheet Material.
Inventor: HIGGS MAURICE WILLIAM
IPC: C08J9/42
Filed: 1966-04-06
Abstract: 1,177,483. Laminates. DUNLOP CO. Ltd. 5 April, 1967 [6 April, 1966], No. 15415/66. Heading B5N. [Also in Division B2] A method of making a cellular sheet material comprises adhering a compressed sheet of reticulated or reticular cellular material to a fibrous material or a cellular material and optionally applying afinishing coating layer thereto. The term "compressed sheet" is directed to a sheet which has been compressed under conditions of heat and pressure such that the material is retained in the compressed form when compressive forces are removed; said compression being effected prior to, during or after adhesion. Adhesion may be effected by needling, by the use of an adhesive, by softening the surface of the compressed sheet by the application of heat or a solvent thereto, by the use of an intermediate layer of an adhesive coated open-mesh fabric or by applying a binder to a superposed assembly of non-adhered sheets and differentially distributing the binder through the assembly, e.g. by heating one surface differentially with respect to the other. Specified cellular materials are natural and synthetic rubbers, polyurethanes, polyvinyl chloride, polyethylene, polypropylene and polystyrene. The cellular materials may have fibres, e.g. of cotton, wool, rayon, polyester or polyamide distributed therein. Specified fibrous materials are woven and knitted fabrics, non- woven bonded fabrics and non-woven, non- bonded fabrics, e.g. of rayon, cotton, polyethylene terephthalate, nylon or acrylic fibres, the fibres of the non-woven fabrics preferably being crimped. Specified adhesives are natural rubber latex, polychloroprene latex, a latex of a graft copolymer of natural rubber and polymethyl methacrylate, an ethylene-vinyl acetate copolymer, neoprene and a carboxylated styrene-butadiene copolymer of a mixture thereof with a phenol-aldehyde resin. Specified binders are latices of natural or synthetic elastomers, e.g. copolymers of butadiene with styrene or acrylonitrile, polyurethanes and polyvinyl chloride. The finishing coating may be a polyacrylate or a polyurethane and may be applied by spraying, brushing or transfer coating, e.g. from a surface of paper, glass, polished metal, polyethylene, polypropylene, polyethylene terephthalate or polytetrafluoroethylene. A preferred product comprises a layer of fibrous material or cellular material adhered between two sheets of compressed cellular material. The products may be embossed during or after surface finishing. Quantitative examples are given. The products may be used as a substitute for leather, e.g. in the manufacture of shoe uppers, shoe linings, upholstery, clothing and handbags.
Patent GB-168433-A (GB)
Title: Improvements in and relating to milk cans
IPC: B65D55/14
Filed: 1920-06-08
Abstract: 168,433. Co-Operative Wholesale Society, Ltd., and Thorp, A. June 8, 1920. Lids, hermetic; lids, catch and like.-A tapered lid for a milk can has a concave under part b and a convex upper part c, which is provided with an imperforate boss j and with a beaded flange d overlapping a flange h on the mouth of the can. The lower part of the lid engages a shoulder g in the mouth of the can. The lid is detachably secured in place by a laterally-engaged hinge-pin k and by a hasp n.
Patent GB-738736-A (GB)
Title: Improvements in apparatus for measuring, indicating or controlling temperature
Inventor: EDMONDS DE LARUE EVERARD
IPC: G01K5/32
Filed: 1951-06-29
Abstract: 738,736. Thermometers. COAL INDUSTRY (PATENTS), Ltd. June 20, 1952 [June 29, 1951; Aug. 24, 1951], Nos. 15496/51 and 19981/51. Class 97 (3). [Also in Groups XIII, XXX and XXXVII] In apparatus for indicating temperature or operating a warning device, valve or switch, a Bourdon tube 23 is formed by a helical tube of flattened cross-section and contains at least one substance, such as carbon tetrachloride, which varies its pressure with change in the temperature (e.g. of radiation from a drum head of a belt conveyer) to which the tube is directly subjected, so that one end of the tube is moved. The tube is of " Invar " (Registered Trade Mark) and its fixed end is sealed by a needle valve 24. A torque rod 21, supported axially of the tube 23 in bearing blocks 19 closing the ends of an open-sided tube 18, carries a bush 22 secured to the moving end of the tube and at its other extremity carries a bush 25. A set screw 26 in the bush 25 operates a switch as the rod 21 is rotated. Unusual coiling of the tube 23 caused by leakage of fluid therefrom may operate a further switch in a warning circuit. The device is shielded by a semi-cylindrical member 27. The tube 23 is filled and sealed while maintained at a predetermined temperature and/or while under stress. According to the first Provisional Specification, the tube may have a linear portion and more than one helical or spiral portion. It may have a pilot bulb and be of circular or elliptical section and may be constant or variable along its length. It may contain Wood's metal. According to the second Provisional Specification the tube contains toluene.
Patent GB-123111-A (GB)
Title: Improvements in Kilns for Carbonising and Distilling Wood.
IPC: C10B7/14
Filed: 1917-10-25
Abstract: 123,111. Marks, E. C. R., (Ledoux, E.). Oct. 25, 1917. Retort furnaces; tunnel kilns.-A kiln or furnace for carbonizing and distilling wood, of the type wherein the wood is charged upon trucks which are passed into the retorts, is constructed entirely of brickwork, excepting the doors and the tracks on which the trucks travel. The retorts have the form of tunnels of relatively great length, each receiving a train of trucks. Heating is effected by gas from a producer 5. the flame of which is passed into flues 6 and cells 7 in the side walls of the retorts. The cells 7 may be arranged in two parallel series, one for each adjacent retort wall, and they may be horizontal. Dampers may be fitted at the openings into the cells 7. The non-condensable portions of the products of distillation may be supplied to the gas-producer or to the flues,
Patent GB-254491-A (GB)
Title: Improvements in flush pipes, waste or drain pipes
IPC: E03D1/38
Filed: 1925-06-16
Abstract: 254,491. Holt, J. June 16, 1925. Bends.-The bend 1, Fig. 1, of a flush, waste, or drain pipe is of a cross-sectional area equal to that of the pipe 2, and is either flattened in the plane of the bend and of rectangular, triangular, or oval shape, or is composed of two pipes 2a, 2b, Fig. 5.
Patent GB-454179-A (GB)
Title: Improvements in or relating to direct current dynamo-electric machines
IPC: H02J7/16
Filed: 1935-05-28
Abstract: 454,179. Exciting dynamos. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and HUGGARD, J. P., c/o General Electric Co., Ltd., Witton, Birmingham. May 28, 1935, No. 15555. [Class 35] An opposing auxiliary generator in the field circuit of a battery-charging generator has in addition to a main field winding an auxiliary winding connected across a divided shunt, one limb of which carries a current proportional to the battery current and the other limb a current proportional to that flowing to the load other than the battery. In the form shown, the auxiliary machine 2 has a winding 1 connected across the main generator 3 and a winding 7 carrying a current proportional to the difference in voltage drops in shunts 12, 13, carrying the battery and load currents respectively, so that increased current flowing to the load 11 produces a compound effect on the main generator. The main machine may have a compound winding 10.
Patent GB-528619-A (GB)
Title: Improvements in trailer mowers
IPC: A01D34/03
Filed: 1939-05-25
Abstract: 528,619. Coupling for agricultural tractor. INTERNATIONAL HARVESTER CO. OF GREAT BRITAIN, Ltd. (International Harvester Co.). May 25, 1939, No. 15588. [Class 103 (v)] [Also in Group I] A tractor drawn mowing machine comprises a pair of frame structures mounted for vertical movement as a unit about a horizontal pivot axis on the tractor and separable about a vertical axis when the mower engages an obstruction, the two structures comprising a draught frame pivotally mounted on the tractor and a mower frame secured by a vertical pivot to the draught frame. The draught frame comprises a pair of plates 11 to the lower ends of which a U-shaped support or draw bar 12 is secured: the forward ends of the plates are pivoted on a horizontal axis 10 to brackets 7 connected by eye bolts 8 to members 6 secured to flanges 5 on the axle housings 2. The mower frame comprises a braced triangular structure 14 supported at its rear end by a castor wheel 18 and provided at its forward stubbleward angle with a bracket 19 releasably attached by a vertical pivot 20 to a bracket rigidly secured to the drawbar 12. A frame 22 extends across the front of the structure 14 and forms a support for the cutting mechanism of the mower ; it is provided at the side remote from the pivot 20, with a bifurcated bracket 23 engaging the draw bar 12. The cutter bar 28 is carried by the usual shoe 29 and coupling yoke 30, the yoke being rockably mounted on a L-shaped bar 31 of which the end portion 32 is rockably carried by a bracket 33 secured to the structure 14 and transverse frame 22. A lever 51 can adjust the tilt of the shoe 29 and the cutter bar 28. A rock shaft 25, mounted in vertical brackets on the frame 22, is provided with a crank arm 26 connected to lifting linkage 27 for the cutter bar, and also with a vertical arm connected to a balancing spring 34. The knife bar is driven from a power take-off shaft 36 through flexible shafting 37 and the usual crank pin 40 and pitman 41. The cutter bar is lifted by a hand lever 44 having a releasable and flexible connection 47 to an arm 48 secured to the rock shaft 45 : a foot lever 45 is also provided to give angular movement to the rock shaft. The mower is maintained in working position by a releasable tie bar 52. The pivot axis 10 is arranged close behind the housing of the rearaxle of the tractor and substantially at the same height as the power take-off shaft of the tractor. Specification 528,586, [Group I], is referred to.
Patent GB-919781-A (GB)
Title: Improvements in or relating to the manufacture of electrical resistors
Inventor: GARDNER DESMOND
IPC: H01C17/22
Filed: 1958-05-15
Abstract: 919,781. Wire-wound resistors; resistive coatings. PAINTON & CO. Ltd. May 15, 1959 [May 15, 1958], No. 15677/58. Class 37. A resistor comprises a wire-wound resistance element connected in parallel with a resistive element of the film type, one of the elements being formed on a sleeve fitted over the other element. A method of adjusting the value of a wire-wound resistor is described in which the value is reduced by connecting an element of the film type in parallel. If the value of the film element is very much greater than that of the wire resistor, the tolerance of the film element can be correspondingly wider. In one example, the adjusting resistor comprises a ceramic outer sleeve having a carbon, metal oxide or metal film on the outer surface soldered to end caps of the wire-wound resistor. A helical path is then cut in the film until the required value of the parallel combination is obtained. The Provisional Specification describes a resistor wound from manganin wire on a ceramic former having coaxial leads. The winding is aged by heating at 140‹ C. for 12 hours. A silicon rubber sleeve is then fitted over the winding. The value of the resistance is next measured and the required value of an adjusting resistor to be connected in parallel is calculated. The adjusting resistor is wound in nickelchrome wire on the silicone rubber sleeve. The completed resistor is provided with a coating of lacquer. Alternatively, the adjusting resistor may be wound from metal-coated glass fibre.
Patent GB-873002-A (GB)
Title: Gas mixing valves
Inventor: BLACK GEOFFREY DONALD
IPC: B01F15/02
Filed: 1958-05-15
Abstract: 873,002. Valves. BRITISH OXYGEN CO. Ltd. May 15, 1959 [May 15, 1958], No. 15701/58. Class 135. A gas-mixing valve comprises a body containing a split sleeve 13 with diametricallyopposed inlet ports 15, an axial outlet 12, and a drum 16 with orifices 17, 17A, rotatable within the sleeve by a handle 20, at least one of the orifices having trimming means for varying the mixture by adjusting that part of the orifice in register with the respective sleeve port at each of one or more selected positions of the drum. As shown, the orifice 17A is a compound orifice, consisting of slots 19 and a series of holes 18 and the area of that part of the orifice in register with the corresponding port in each of five settings of the drum is separately adjustable by one of a set of fingers 24 bent up from a plate 21 and displaceable by an adjusting screw 25.