baber/WOPTO huggingface dataset:
Patent GB-1139373-A (GB)
Title: System for producing carbonized and prereduced iron ore pellets
Inventor: BAN THOMAS EUGENE
IPC: C22B1/24
Filed: 1967-02-02
Abstract: 1,139,373. Iron ore pellets. McDOWELLWELLMAN ENG. CO. 2 Feb., 1967, No. 5171/67. Heading C1A. [Also in Division C7] Partially reduced iron ore pellets are produced by (a) mixing the ore with a flux and carbonaceous material, (b) forming moist pellets ¢-1¢" in diameter, (o) charging the pellets on to a travelling grate to form a bed 10-20 inch deep, through which heating gases are passed, (d) passing the pellets through a drying zone at 300-600‹ F., (e) passing the pellets through a zone at 1800-2200‹ F. in which carbonization and reduction of 15-40% of the Fe occurs, and (f) reversing the direction of gases in the latter part of the reducing zone. The ore mixture may be ground to -10 mesh (Tyler) with 50%-325 mesh, and pelletized in a rotating pan or drum with water and optionally binders, e.g. starch, sulphite liquor, lime, salts, or bentonite. The flux may be limestone and sand, and the carbonaceous material may be coke, charcoal, lignite, anthracite, or bituminous coal. The gas flow in (d), (e) and (f) is 200-300, 100-200, and 25-200, SCFM/sq. ft. of wind box area, resp. The exhaust gases from (e) may be mixed with air and recycled to the drying zone or used in step (f). The bed may be ignited in step (e) with a gas flame, air being drawn through the bed, or with recycled exhaust gases which have been passed through a burner and mixed with O 2 - depleted air or N 2 . The pellets may be further reduced to 60-90% free Fe in a subsequent zone at 2400-2500‹ F.
Patent GB-411607-A (GB)
Title: Improvements in apparatus for cleaning boiler tubes
IPC: F28G3/16
Filed: 1933-02-21
Abstract: 411,607. Boiler cleaners. WILSON, A. M., 170, Hope Street, Glasgow. Feb. 21, 1933, No. 5284. [Class 99 (ii).] In a boiler cleaner a blower tube 18, Fig. 1<A>, is provided at one end with a nozzle 19, which is normally located within a protecting boiler tube T, and is connected at its other end to a tubular extension 17, Fig. 1B, which is in telescopic connection by means of a nut 16 with an actuating screw 15 rotatable by a hand- or chain-wheel. The nut 16 is provided with a roller 21 which engages a cam-track formed in a sleeve 11 surrounding the extension 17 and screw 15, the said track being constituted by straight and helical portions 22, 23 respectively so that rotation of the screw 15 will cause the nozzle to be moved first axially from its protective to its operative zone and then helically during its operating period. Cleaning steam &c. is supplied to the blower from a steam chest 12 surrounding the extension 17 through ports 27, 20 in the chest and extension respectively, the steam-supply being cut off when the nozzle is in its retracted position, the ports 27 then being covered by the enlarged part of the extension 17 provided with the packing rings 25. In a modification, Fig. 4, the actuating member is in the form of a tubular screw 15A, i.e. a tube formed with a helical track, and the extension 17 carries a spindle 16<A> provided with a roller 21<A> which engages both the screw 15<A> and also the straight and helical tracks 22A 15A and also the straight and helical tracks 22<A>, 23<A> in a sleeve 11<A>. In both constructions the helical track 23 or 23A may terminate in an annular or partly annular one.
Patent GB-631397-A (GB)
Title: Improvements in methods and apparatus for melting brass chips
IPC: C22C9/04
Filed: 1947-02-24
Abstract: 631,397. Melting brass chips &c. TRIGGS, W. W. (Chase Brass & Copper Co., Inc.). Feb. 24, 1947, No. 5343. [Class 51 (ii)] A process for melting brass chips, such as those produced by machining operations, or small brass articles such as cartridge cases, comprises maintaining a pool of molten brass at a temperature at which zinc vapours are given off, continuously advancing and agitating the chips with such iron particles as may be included therewith through an air-excluding duct, maintaining an incoming portion of the stream of chips at a temperature sufficiently low to condense zinc vapours thereon while preheating another portion in advance of the cooler incoming portion to a temperature above 1000‹ F., continuously passing a reducing gas through the chips to deoxidise them, and introducing the heated and deoxidised chips through a non-oxidising atmosphere into the pool of melted brass. The chips are preferably preheated to within 100‹ F. of their melting point. In the apparatus shown, the chips are fed through a rotary screw conveyer 11 surrounded by heater elements 16 and fall through 'a duct 18 into a pool of molten brass contained in an induction furnace 20, a reducing gas being introduced under pressure through a pipe 27.
Patent GB-553426-A (GB)
Title: Improvements in or relating to the alloying of molybdenum with molten ferrous metal
IPC: C22C33/00
Filed: 1942-04-21
Abstract: 553,426. Alloys. CLIMAX MOLYBDENUM CO. April 21, 1942, No. 5354. Convention date, April 7, 1941. [Class 82 (i)] Iron alloys containing molybdenum are made by adding to molten ferrous metal a mixture of an oxide of molybdenum, a carbonaceous binder, and a more active reducing agent which may be one or more of the elements aluminium, silicon, calcium, and magnesium. The mixture may be in the form of briquettes which are preferably highly compressed, and the addition may be made in the ladle or may be part of the furnace charge. The ferrous metal may also contain chromium or vanadium. Specifications 502,295 and 513,604 are referred to.
Patent GB-276388-A (GB)
Title: Improvements in or relating to press button fasteners
IPC: A44B17/00
Filed: 1926-02-26
Abstract: 276,388. Waldes, H. Feb. 26, 1926, Addition to 230,746. Press-button fasteners. -The bent over needleshank 3 of the pressbutton fastening of the parent Specification is provided with a flattened portion 5 adjacent the point 4.
Patent GB-140887-A (GB)
Title: Improvements in apparatus for measuring the flow of gas or air
IPC: G01F1/38
Filed: 1919-03-06
Abstract: 140,887. Brayshaw Furnaces & Tools, Ltd., and Frith, J. March 6, 1919. Measuring-apparatus.-In air or gas meters employing means such as a Venturi tube A and tubes C, D disposed as shown, the tube C is connected to the expansion chamber of a differential pressure gauge E and the tube D to the other chamber. Where gas and air are used together, e.g. for furnaces &c., two meters are employed, the calibrations of the dials being connected by lines f<1> to indicate the correct mixture of gas and air for combustion.
Patent GB-117426-A (GB)
Title: Improvements in and connected with the Weaving of Crimped or Waved Wire Mesh Work Material.
IPC: D03D41/00
Filed: 1918-03-30
Abstract: 117,426. Birrell, D. S., Smith, G., and Firth Co. March 30, 1918. Open-mesh wire fabrics, looms specially designed for; shuttleless looms; hand-power looms; treating fabrics in looms; take-up motions.-Open-mesh fabrics with warps and wefts of waved or crimped wire are woven with uniform meshes of the form and size required by inserting gauge devices through the meshes as the fabric is woven. In a hand-power loom, as shown, the warp wires 1 pass from a roller through treadle-operated healds 4 and a reed in a lay 5 operated by a handle 6, and the woven fabric passes over a table 18, where it is acted upon by gauge devices in the form of teeth 10 on wheels 11 mounted on square shafts 13 above and below the fabric. The spaces between the bases of the gauge teeth are just sufficient to accommodate the weft wires 2, which are inserted by hand into the sheds and beaten up by the reed. The teeth of the upper and lower sets of wheels 11 enter alternate longitudinal sets of meshes and overlap, as shown, and the shafts 13 are geared together and are rotated by handoperated ratchet-and-pawl mechanism so as to draw forwards the fabric, on which bear weighted or spring-pressed pressing-rollers 15, 16. The gauge teeth correct inaccuracies in the positioning of the warp and weft wires, especially as regards the number of waves or crimps per mesh, and are readily changeable to suit any size of mesh. The loom may be driven mechanically.
Patent GB-1450668-A (GB)
Title: Process for the separation of propylene oxide
IPC: C07C53/02
Filed: 1975-02-10
Abstract: 1450668 Propylene oxide, acetic acid and formic acid RHONE POULENC INDUSTRIES 10 Feb 1975 [11 Feb 1974] 5605/75 Heading C2C Propylene oxide is separated from a reaction mixture obtained by oxidizing propylene which comprises distilling from the reaction mixture a propylene oxide-rich fraction in the presence of a neutral ester of phosphoric acid. The propylene oxide may be prepared by oxidizing propylene with air or oxygen in the liquid phase in a solvent, e.g. an aromatic hydrocarbon or a chlorobenzene. A suitable phosphoric acid ester is, e.g. tributyl phosphate. Acetic and formic acids are recovered from the above reaction mixture after distilling propylene oxide therefrom by a process which comprises (a) dehydrating the remaining liquid by distilling a water-rich fraction therefrom, (b) separating the neutral ester of phosphoric acid from the dehydrated mixture by distilling off a fraction which comprises the solvent and formic and acetic acids formed during the oxidation reaction and with drawing the residue comprising a liquid rich in the phosphoric acid ester, (c) separating a major proportion of the solvent from the fraction obtained in step (b) by distilling off a mixture containing formic and acetic acids and a minor proportion of solvent, and withdrawing the residue comprising a liquid rich in solvent and, (d) recovering acetic and formic acids from the fraction obtained in step (c) by distilling off an azeotrope of formic acid and the solvent therefrom and withdrawing the acetic acid remaining, and then distilling said azeotrope and withdrawing the formic acid remaining.
Patent GB-1048096-A (GB)
Title: Production of decorative tiles and wall and floor surfaces
IPC: B28B3/10
Filed: 1964-02-11
Abstract: 1,048,096. Moulding composite tiles. E. LONGINOTTI. Feb. 11, 1964 [Feb. 13, 1963], No. 5632/64. Heading B5A. A method of making tiles of cementitious material comprises the steps of using a plunger having a resilient pad 4, Fig. 2, to press a charge of moist coloured material to obtain a layer S 2  of uniform density, trimming the layer to the desired thickness, Fig. 4, loading a charge of less moist material on to layer S 2 , pressing and trimming the second charge to obtain a further layer of uniform density and desired thickness, a vent pressing and a final compression of both layers. After trimming layer S 2  it may be subjected to a plastifying pressing to ensure a higher uniformity of coloration. The moisture content of the layers is not more than 20% by weight of water and preferably that of layer S 2  is above 12% and that of the second layer below 10%. The material is loaded into the mould, whose bottom face is formed by a vertically reciprocable plunger 2 from a horizontally reciprocable hopper 7, Fig. 6 (not shown). The side walls of the mould comprise a frame 1 which is moved downwardly prior to the trimming operations, upwardly by a predetermined amount prior to loading the mould with the second layer material, Fig. 5 (not shown), and downwardly by the compression plunger 10, Fig. 10 (not shown), during the final pressing to facilitate removal of the tile.
Patent GB-219257-A (GB)
Title: Regenerative brake for main and tail haulages
IPC: H02P3/18
Filed: 1924-03-05
Abstract: 219,257. Eckmann, I. March 5, 1924. No Patent granded (Sealing fee not paid). Electric plant.-In a main and tail haulage system using an alternating-current power supply, an auxiliary induction motor is driven by the loose tail drum to retard the paying-out of the tail rope, and is geared to be revolved at an oversynchronous speed so that it can be connected to the supply mains to regenerate into them the energy lost in braking the loose tail drum. In the illustrated system the drums 5, 6 act alternately as the loose tail drums, the drum 6 being shown functioning in that capacity. The drum 5 is driven from the main motor 2 through the clutch 7 while the tail drum drives the auxiliary motor 9 through the chain gear 12 and clutch 14. The changing over of the clutches 7, 8 effects a corresponding change in the clutches 14, 18. The main controller 16 in the " off " and adjacent positions controls the main motor only, while in the " running " or full speed " positions it also connects the motor 9 to the mains 24. A series of " full speed " studs are provided which allow the auxiliary motor to be controlled without affecting the main motor. The auxiliary motor may be controlled to vary the braking effect by varying the rotor current, the field strength, or the field velocity or by any combination of these methods.
Patent GB-296682-A (GB)
Title: Improvements in and relating to ball mills
IPC: B02C17/06
Filed: 1927-03-01
Abstract: 296,682. Crowe, P. L. March 1, 1927. Ball mills.-A combined mill and pulverised fuel feeder comprises a mill in which the coal is pulverized by balls &c. and a fan 12 by which it is conveyed in pulverized form through a perforated wall or screen 11, the mill being mounted on hollow end bearings 5 through one of which the fuel is supplied by a hopper 7 in conjunction with air induced by the fan whilst through the other the pulverized particles and air, intimately mixed, are forced by the fan to furnace boilers through a tube. The hopper 7 is fixed to the pedestal 1 and a tube 8, provided with a valve 14, supplies atmospheric air to the mill whilst a tube 15 supplies hot air to the fuel in the hopper. In Fig. 3 two mills are shown combined and are mounted to revolve with a hollow shaft 5<1> mounted in bearings. The fuel to each mill is supplied through a hopper 22 together with hot air from a pipe 31, the hopper being fixed to a central bearing pedestal 1'. Each mill comprises a cylindrical casing 24 supported at one end by a two-piece, perforated, end-plate 20 and at the other end by a fan casing integral with fans 26, 27. A perforated drum 17 forms a sifting- chamber with an open end communicating with the fan, through which the pulverized coal is drawn. The central bearing is provided with openings provided with tubes through which air is supplied to the inside of the hollow shaft by means of holes bored therein. The end of each shaft and its corresponding bearing are similarly perforated and tubes convey the pulverized coal therefrom to the boiler furnaces. The mill may be driven by induction motors, the pole pieces of which are indicated at 32. Repairs to one mill, Fig. 5, can be, executed by disconnecting the shaft 5<1> from the central portion 21.
Patent GB-484841-A (GB)
Title: Improvements relating to heating and ventilating apparatus
IPC: F24F6/04
Filed: 1937-10-08
Abstract: 484,841. Regulating liquid levels. KRAMINSKY, V. A. Oct. 8, 1937, No. 5806. [Class 123 (i)] [Also in Groups X and XII] A bird-feed regulator for supplying liquid to a humidifying device comprises a liquid container 24 sealed above liquid level mounted in a supply vessel 31 and provided with two orifices 28, 29 one lower than the other arranged to be sealed by liquid in the vessel 31. After supplying liquid through pipe 38, the level in vessel 31 falls below orifice 28 with consequent admission of air to the container, liquid then flows from latter to vessel 31 through orifice 29 until orifice 28 is sealed when flow ceases. A valve 36 enables the orifices to be closed when the container is removed from the cabinet. In a modification, the orifices 28, 29 are replaced by orifices 53, 54, Fig. 6, at the ends of tubes 51, 52 projecting from the cap of the container. In this modification the temperature rise of the humid air controls the flow of liquid by unsealing the orifice 53, air flowing into the container through an orifice 57.
Patent GB-115085-A (GB)
Title: Improvements in Internal Combustion Engines of the Tandem-cylinder Type.
IPC: F02B75/28
Filed: 1917-04-25
Abstract: 115,085. Frost, C. R. B., and Thorne, G. April 25, 1917. Four-stroke-cycle engines.-The engine is of the tandem-cylinder type, with adjacent combustion chambers. In one form, the engine has four pairs of tandem-cylinders arranged abreast, and the cranks 1, 2, 3, 4, Figs. 2 and 3, are set to follow one another at angles of 90 degrees, the firing order being 1, 4, 2, 3, 2, 3, 1, 4. In another form, Fig. 5, the engine has eight pairs of cylinders and the cranks follow one another at angles of 45 degrees; the firing order is 1, 3, 7, 5, 2, 4, 8, 6, 2, 4, 8, 6, 1, 3, 7, 5.
Patent GB-802987-A (GB)
Title: Improvements in or relating to junction rectifiers or junction transistors
IPC: H01L21/60
Filed: 1956-02-24
Abstract: 802,987. Semi-conductor devices. SIEMENSSCHUCKERTWERKE A.G. Feb. 24, 1956 [Feb. 26, 1955], No. 5846/56. Class 37. In a junction rectifier or transistor device a holder or heatdissipating member, one surface of which bears against an electrode of the device, is provided on the bearing surface with a coating of ductile material welded or soldered thereto. In the embodiment a transistor comprises a base 1a of germanium with layers of indium 1b, 1c fused to either side to form facing PN junctions. Holding members 2, 3 are provided with welded on indium or gold layers 4, 5 preferably containing less than 0.1 per cent impurity to give improved ductility. The layers are at least 50 Î 10-4 cm. thick to give sufficient material to flow into irregular surface features of the electrodes to provide an intimate contact when the members are pressed together. Specification 749,392 is referred to.
Patent GB-621990-A (GB)
Title: Improvements in conveyor track switch
IPC: B61L23/00
Filed: 1947-02-28
Abstract: 621,990. Elevated railways. WEBB CO., J. B. Feb. 28, 1947, No. 5877. Convention date, March 2, 1946. [Class 104 (ii)] Stub switches for conveyer tracks, wherein a fixed frame 10 carries the main track 12 and branch tracks 13 ... 15 whilst a frame 16 moving within frame 10 carries the connecting rails 20... 22. are locked in each position by means releasable from floor level. The release means may, by a single hand movement, also traverse the switches to their required position. The moving frame 16 carries two bell-crank levers having arms 26a, 26b, connected by a spring 33 and arms 27a, 27b ending in tongues 32a, 32b engaging stops 23....25 carried by the fixed frame 10. The arms 26a, 26b are connected to handles through pulley lines 34a, 34b, a pull on one handle first releasing one tongue and then moving the frame 16. The tongues have tapered surfaces 35a, 35b which for one respective direction of movement allow them to ride over the stops.
Patent GB-163815-A (GB)
Title: A new or improved system of and improvements in or connected with apparatus for controlling the supply of fluid to a number of substations
IPC: G01F15/00
Filed: 1920-02-27
Abstract: 163,815. Macgill, W. A., and Macgill, C. D. Feb. 27, 1920. Valves actuated by rotary motors.-Apparatus for controlling the supply of fluid to a number of sub-stations so that the amount drawn off at any sub-station during a regulated period is limited comprises, for each sub-station, a branch main, controlled by a valve which is closed by means of a meter in the branch main, and setting- mechanism operated or controlled from a dipstance. As shown in Fig. 1, a balanced valve A controlling a sub-main is operated by a weighted arm B. As the fluid is discharged a pawl E, operated from the meter, turns a toothed carrier C and lifts the arm B, adjustment being made so that, when the maximum quantity of fluid has passed, the arm B reaches the vertical position and falls over to close the valve. The apparatus is re-set hydraulically by means of a piston in the cylinder G, the rod of which carries rollers H, H<1> which contact with the arm B and with the pawl E and a detent D respectively. The meter may be of the reciprocating-piston or of the rotary type. The apparatus might be re-set by pneumatic or electrical means. The apparatus is particularly applicable for the distribution of water from a heating station.
Patent GB-252783-A (GB)
Title: Improvements in or relating to apparatus capable of being operated electrically froma distance and suitable for registering and indicating numerical data, and the like
IPC: G08B25/00
Filed: 1925-03-04
Abstract: 252,783. Graham, E. A., and Brockies, A. C. March 4, 1925. Counters actuated by electric means; registering difference of positive and negative actuations; transfer mechanism.-In apparatus operated electrically from a distance for registering numerical data changing from positive to negative values such as gunnery angles or ranges two sets of registering mechanism are arranged to indicate a common zero and an intermediate or maximum position, an axially movable shutterlike device being provided to mask one set of indications and uncover the other on the quantity passing through the zero or maximum values. In the form shown, the spindle 7 to which the units drums 5 of the counters A, B are secured is driven by a step-by-step electric motor 28 of the type described in Specification 125,454. Each drum 5 is provided with a single toothed wheel 8 and a notched locking ring 9 co-operating with a corresponding stagger-toothed transfer pinion 13 on a spindle 12 which through gearing 10, 11 transmits a one-step movement to the tens drum 6 at transfer, the drums 6 being freely mounted on the spindle 7. A similar transfer-mechanism associated with each of the drums 6 serves to actuate a corresponding pinion 17 to which is attached a cam plate 16 operatively connected to an axially sliding shutter a and b, respectively. By this means the aperture 23, 25 in the shutters a, b can be brought into or out of register with the numerals on the two sets of drums. A stationary cover plate 18 with apertures 20, 21 is mounted in the casing above the registering mechanism and shutters a, b.