baber/WOPTO huggingface dataset:
Patent GB-239404-A (GB)
Title: Process for producing metals and alloys
IPC: C22B4/06
Filed: 1924-11-26
Abstract: 239,404. Haglund, T. R. Nov. 26, 1924. Dry processes of extracting refractory and other metals; briquetting and agglomerating processes; alloys.-A process for the production of metals or alloys, particularly of low carbon content, for example chromium, iron, manganese, titanium, vanadium, tungsten, molybdenum, and their alloys, from oxides or ores, comprises the indirect reduction of the ore by means of a reducing agent which is itself formed during the operation from oxides and carbonaceous reducing agents. The ore is charged into a furnace along with briquettes or lumps of a mixture of carbon, and one or more oxides or oxidized compounds of aluminium, magnesium, barium, calcium, silicon, manganese, boron, chromium, zinc, &c., and with slag-forming or other ingredients such as lime, silica, fluor-spar, sulphides of calcium, aluminium, magnesium, &c. The carbon may be in the form of charcoal, graphite, anthracite, coal, lignite, coke, lignite coke, peat, sawdust, &c., and if it is other than a coke, the briquettes may be coked before use. The binding agents may be tar, marl, limewater, clay, water-glass, cement, sulphite lye, &c. The composition of the charge may be such that the slag formed contains considerable proportions of lime, magnesia, or alumina; and it may be utilized as an ingredient of the briquettes. If the briquettes are used in excess in the charge, chromium alloys, for example, may be obtained containing a high percentage of aluminium. Iron alloys containing silicon, manganese, aluminium, chromium, &c., may be obtained by using briquettes in excess of iron ore, the iron alloying with elements reduced out of the briquettes, and the product being subsequently refined for the reduction of the carbon and sulphur contents, if necessary. The quantity of carbon in the briquettes should generally be less than that required for the complete reduction of the oxides therein.
Patent GB-336749-A (GB)
Title: Improvements in the manufacture and production of metal carbamates
IPC: C01B21/12
Filed: 1929-09-19
Abstract: 336,749. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Sept. 19, 1929. Metal carbamates are prepared by reaction of ammonium carbamate and finely divided, preferably dry metal oxides, in the absence of solvents, at temperatures not usually substantially above 100‹ C. and at ordinary, increased or reduced pressure. The reaction commences at ordinary temperatures and is completed in most cases at from 60‹ to 80‹ C. It may be carried out in a stream of inert gas such as ammonia, air or nitrogen. Alkaline earth carbamates obtained by the process can be converted into cynamides by raising the temperature to about 700‹ C. and passing a stream. of ammonia. According to one example a good conversion of calcium oxide to carbamate is obtained at ordinary temperatures. If the calcium oxide is prepared from the hydroxide at a. low temperature, such as 500‹ C., a 95 per cent yield is obtained in a few hours. Other examples describe the preparation of carbamates of zinc and magnesium.
Patent GB-637136-A (GB)
Title: Improvements in registration control devices
IPC: B65H39/16
Filed: 1947-10-24
Abstract: 637,136. Printing-machines. GOSS PRINTING PRESS CO., Ltd. Oct. 24, 1947, No. 28501. Convention date, Nov. 21, 1946. [Class 100 (i)] A register control device for registering a pre-printed web 32 with webs printed by rotary couples at a high speed just prior to association of the webs at a roller leading to the cutting and folding mechanism of the press is provided with means for adjusting the position of a tensioning roller 40 over which the web 32 is passed, and also with means for controlling the speed of a feed roller 38 for the web 32. Additionally means are provided for spraying liquid on to the web so as to permit it to stretch more readily and to cause it to expand if the controls cannot effect sufficient adjustment of tension or speed in one set of conditions, and also means to dry the web by heat in another set of conditions. As shown in Fig. 2, the roller 38 is driven from a shaft 59 geared to the printing press by means of a variable gearing comprising a differential gear 61, 62, 63, 66, 68 geared on one side directly to shaft 59 by worm gearing and on the other side to a worm-gearing 77 driven from gear 59 by a variable pulley drive 65, 75, the sheave 65 of which is adjustable by screw gearing operated by a motor 81 which is energized by switches 86, or 88 when the tensioning- roller 40 reaches either of its extreme positions. The screw 84 which actuates the pulley 65 is fitted with a travelling nut 85 which operates switches 105, 120 adapted to energize respectively electromagnets for controlling a valve 104 for controlling the admission of water or other liquid to spray-pipes 101, and valves 111, 112 for controlling the supply of gas and air to a burner 108 arranged close to the web 32. The pipes 101 are arranged in a casing 100 through which the web 32 is passed. An electric lighter 119 is arranged to light the burner 108. The tensioning roller 40 is moved by nuts 48, 49 operated by screws 51, 52 driven by bevel gears 54, 56 operated by a motor 58 which may be controlled by a scanning device and photo-sensitive cells arranged as described in Specification 637,131, [Group XL (b)], or the screw-mechanism for adjusting the roller 40 may be operated by a handle 126. The motor 81 may also be controlled by photo-sensitive cells or the gear 82 operated by hand. The burner 108 may be replaced by an electric heating device.
Patent GB-317255-A (GB)
Title: Improvements in method of and apparatus for transporting concrete
IPC: B28C5/42
Filed: 1928-10-05
Abstract: 317,255. Hoffmann, E. A. Oct. 5, 1928. Tank vehicles; tipping wagons. - Vehicles for conveying mixed concrete from a central mixing station to the works site comprise a tank having a smooth unencumbered interior and rotating about a horizontal axis and arranged for end-tipping to discharge the load. The tank 14 supported in bearings 12 carried by a tipping cradle 2 is provided with an opening to admit concrete which opening is adapted to be sealed by a closure 16 and an opening at the rear to discharge the contents when the vehicle tank is tipped. The tank 14 is provided with a ring 24 of teeth by means of which and a pinion 25 driven from the engine &c. the tank is rotated. The cradle 2 is pivoted at 3 to the chassis and is tipped by any known means such as an hydraulic cylinder 5, piston 6, cables 9 and a bracket 10 on the cradle.
Patent GB-1119875-A (GB)
Title: Improvements relating to dumping cactus grabs
Inventor: SOUTH RAMSEY THOMAS
IPC: B66C3/04
Filed: 1966-06-27
Abstract: 1,119,875. Grabs. PRIESTMAN BROS. Ltd. 27 June, 1967 [27 June, 1966], No. 28649/66. Heading B8H. In a grab which has upper and lower blocks 9, 10, Fig. 1, and a sliding block 12 which is raised and lowered along telescop c guides 11 connecting the upper and lower blocks, upper and lower rings 13, 18 are connected to the upper and lower blocks respectively by universal joints. As described these joints comprise horizontal barrel-shaped pins housed in cylindrical sleeves. The sliding block may be attached to the lower block to raise the latter and close jaws 16 by catches 39 which are released by a lever 51 and cable 70. Two shock-absorbers 27 are provided which offer a small resistance only as the jaws are closed at normal speed but a high resistance if the sliding and upper blocks move towards each other rapidly when the jaws are opened. This may occur as a result of the jaws not being properly closed prior to pulling the trip cable 70. Shock-absorbers 68 are provided below the hoisting ring 67. A single shock-absorber 71, acting between ears 72 on the upper ring and ears 73 on one of the jaws, prevents the jaws opening too quickly and jamming.
Patent GB-791217-A (GB)
Title: Improvements in or relating to means sensitive to changes in the conditions of fluid flow
Inventor: GOODALL DONALD GEORGE
IPC: G01F1/38
Filed: 1955-10-07
Abstract: 791,217. Venturi apparatus. ROLLSROYCE, Ltd. Oct. 1, 1956 [Oct. 7, 1955], No. 28693/55. Class 69 (1). The restriction afforded by an element in a conduit such as a filter 11 in a fuel flow conduit 14, 15 of an aircraft fuel system is measured by a pressure-sensitive bellows 19 subjected to the pressure at the throat of a venturi 18 upstream of the filter and the pressure downstream of the filter, the venturi being so dimensioned that the difference between these pressures is normally substantially zero over a range of flow rates, but on formation of ice on the filter increases to a value sufficient to close electrical contacts 23 and 24 and give an indication of icing, or automatically control the supply of heated air to a heat. exchanger arranged in the fuel conduit as described in Specification 749,684, or of de-icing fluid into the conduit. The pressure difference may be arranged to be normally other than zero in the case of fine filters which cause a pressure drop not proportional to the square of the flow rate..
Patent GB-483659-A (GB)
Title: Improvements in or relating to visible index files
IPC: B42F17/18
Filed: 1936-10-22
Abstract: 483,659. Filing papers. MOORE'S MODERN METHODS, Ltd., and MOORE, C. H. Oct. 22, 1936, No. 28748. [Class 146 (i)J In a filing-device of the kind comprising a number of leaves B hinged to a baseboard A in overlapping formation so as to provide a series of pockets for receiving cards or sheets, the lower edge of each leaf B is formed with or has secured thereto one tongue or more tongues B<1> which are passed through slits A<1> in the board A and secured to the reverse side of the board by adhesive or otherwise. The tongues B<1> may be formed from a continuous strip of material extending along the rear face of the board A and having loops thereof projecting through the slits so as to be secured to the leaves by adhesive or stapling. A protecting strip of metal D is fixed to the lower edge of the board and serves to secure a card E in place. The back of the board A is covered by a sheet of material C.
Patent GB-518710-A (GB)
Title: Improvements in synthetic filaments, fibres and articles made therefrom
Filed: 1938-08-27
Abstract: 518,710. Yarns and threads; spinning &c. machines. CARBIDE & CARBON CHEMICALS CORPORATION. Aug. 27, 1938. No. 28811/39. Convention date, Sept. 15, 1937. Divided out of 518,555. Drawings to Specification. [Classes 120 (ii) and 120 (iii)] [Also in Group IV] Artificial filaments, fibres, yarns, and threads are made by dry spinning a solution of a conjoint polymer of a vinyl halide and vinyl ester of an aliphatic acid, e.g., vinyl chloride and vinyl acetate, the polymer having a molecular weight of at least 15,000. The filaments may be delustred while on the take-up bobbins by treatment with a stream of hot water. Before being spun to yarn the filaments may be allowed to age or may be immersed in hot water. The yarns may be subjected to stretching operations preferably while they are wet with water. The stretch may be set by maintaining the filaments in stretched condition 'at a temperature below 75C. The water used for the stretching operation may contain a wetting agent. The stretched yarns may be subjected to abrupt flexing at high speeds while immersed in water. They may be passed over rollers of small diameter to effect abrupt changes in direction. During twisting, doubling, skeining, coning or like operations, the filaments or yarns may be lubricated with water containing if desired a wetting agent. In an example, filaments of vinyl chloride-vinyl acetate polymer from a dry spinning apparatus are passed to take up bobbins. The traverse arms controlling the cake-build on these bobbins are provided with tubes through which hot water is directed on to the filaments. The wound filaments are then twisted. stretched, and flexed. Specification 518,555 is referred to.
Patent GB-676454-A (GB)
Title: Improvements in or relating to amplifying circuits
IPC: H03F1/50
Filed: 1949-11-11
Abstract: 676,454. Valve amplifying circuits. WESTERN ELECTRIC CO., Inc. Nov. 11, 1949 [Nov. 12, 1948], No. 28952/49. Class 40 (vi). A wide-band amplifier comprises an amplifying device having an anode, cathode and a pair of control electrodes, a load resistance connected to the cathode, a high-tension supply source connected between the anode and the load resistance, a signal input between one control electrode and the load resistance and means for maintaining the control electrode at the same signal potential but different D.C. potentials. As shown, Fig. 4, the anode of input valve 22 is connected directly to the screen grid of a pentode 26, and, through a resistor 28 and condenser 27 in parallel, to the control grid. Operating potentials for the screen and control grids are obtained from the anode supply 25 of the input valve 22 through resistors 28, 29 connected in series across it. A negative supply source 30 may be connected in series with resistor 29. Since the screen and control grids are held at the same alternating potential by condenser 27, the effect of the inter-electrode capacity 17 is minimized. The resistor 28 only carries bleeder current, instead of full screen current, so that its size is not limited by the voltage drop across it, and thus condenser 27 may be small, so that stray capacitance is reduced. The output is taken from the cathode of pentode 26. In a modification, Fig. 5 (not shown), the pentode amplifier is fed from a cathode follower input, and the output taken from the anode of the pentode valve. Fig. 6 shows a three-stage feed-back amplifier with a pentode input stage 40 feeding the control grid of a second pentode 48 through a condenser 47 shunted by a resistor 49. The screen grid of the output valve 26 is connected directly to the anode of valve 48 which is also connected to the control grid of valve 26 through a condenser 27 and resistor 28 in parallel. The cathode of the input valve 40 is connected to the cathode of output valve 26 through a condenser 60 and resistor 59 in parallel. The output may be taken from the cathode or anode of the last stage. The coupling resistors 28, 29 may be replaced by generalized impedances.
Patent GB-361501-A (GB)
Title: Improvements in change gear mechanism
IPC: B60W30/18
Filed: 1930-09-27
Abstract: 361,501. Change-speed gearing. HARDY, W. G., Clematis Cottage, West Wittering, near Chichester, Sussex. Sept. 27, 1930, No. 28986. [Class 80 (ii).] In change-speed gearing such as the epicyclic gearing described in Specification 353,523 in which a clutch is disengaged when an independent controlling member is moved to a neutral position, delay action means, such as a dashpot, prevent disengagement of the gear clutch if the operating member is moved quickly to another engaged position. When the slidable operating member c is moved by the lever a into the neutral position in which it is shown, a roller on the end of the lever arm d is raised into a recess in the member c by a spring e<1> acting on the lever arm d<1>. The clutch f, f<1> is simultaneously disengaged. An additional lever arm d<2> is connected to a dashpot g<3> so that the clutch can only be disengaged slowly.
Patent GB-744211-A (GB)
Title: Prepared solder objects and method of making the same
Inventor: PEARCE SIDNEY CECIL
IPC: B23K35/02
Filed: 1953-10-21
Abstract: 744,211. Soldering. ENTHOVEN & SONS, Ltd., H. J. April 9, 1954 [Oct. 21, 1953], No. 29050/53. Class 83 (4). In a flat solder preform comprising upper and lower solder layers and an intermediate flux layer, the solder layers are connected by one or more solder ribs extending through the flux layer. A cylindrical solder rod 1 with five sector-shaped flux cores 2 is rolled into the strip shown in Fig. 3. Preforms, e.g. circular washers, are blanked therefrom. A flat rod 11 with nine or more flux cores 12 is rolled into a thin strip from which preforms are blanked. In a modification the cores in the flat rod are of parallelogram shape. The preforms may be provided with perforations 25, Fig. 10, in their upper and/or lower layers to allow flux outflow, either simultaneously with or after the blanking- out operation. Alternatively the thin strip may be perforated before blanking out preforms by rolling it with rollers having projections thereon.
Patent GB-832070-A (GB)
Title: Improvements in and relating to electrical pin connectors
IPC: H01R43/16
Filed: 1956-09-24
Abstract: 832,070. Making electrical connectors; extruding. BURNDY CORPORATION, [formerly BURNDY ENGINEERING CO. Inc.]. Sept. 24, 1956 [Sept. 26, 1955], No. 29056/56. Classes 83 (2) and 83 (4). [Also in Group XXXVI] Apparatus for forming and work-hardening a metal slug 23 into a connector-pin (see Group XXXVI) comprises an extrusion punch 30 and a split die 32 which is divided into two upper parts 34, 36, spring-biased apart, forming recesses 35, 37 for a cup-shaped portion of the pin, and a hollowed-out bottom part 38 forming recesses 39, 40 for the pin, and flange 20, respectively. A knock-out pin 42 may be provided in die 38. Other parts of the apparatus comprise closing and retaining wedges 44, 46, a holding block 48, stops 50, 52 to control the amount of wedge openings, wedge springs 54, 56 for wedge pins 58, 60 which time the action, the punch and wedge holder 62, guide-plates 64, 66, 68, wedge openings 70, 72, the die parts, biasing spring 74, dowel pins 76 for aligning die parts 34, 36 and slots 78, 80 for fastening the punch and wedge holder to the ram of the press.
Patent GB-887058-A (GB)
Title: Hair net and helmet
IPC: A42B3/00
Filed: 1960-08-23
Abstract: 887,058. Headwear. JOHNSON, P. Aug. 23, 1960 [Sept. 8, 1959], No. 29084/60. Class 63 A hair net 12 is secured to the periphery of a helmet 1 of semi-rigid light-weight plastic so that in use the net is spaced from the helmet. The helmet is provided with ventilation apertures 14 and slits 9 permit its use on heads of various sizes.
Patent GB-173629-A (GB)
Title: Improvements in and relating to electric starters for internal combustion engines
IPC: F02N15/06
Filed: 1920-10-14
Abstract: 173,629. Midgley, A. H., and Vandervell & Co., Ltd., C. A. Oct. 14, 1920. Turning-gear.-In an electric starter, a starter pinion a, loosely mounted on the armature shaft c, is moved into gear with an engine member b by the axial movement of a screw member e and is rotated for starting through a clutch comprising friction surfaces f<1>, f<2> on the pinion and the screw member. In the form shown, the pinion and the screw member are initially kept apart by a spring g, the distance between them being limited by a flanged ring h secured to the friction member f<1> of the pinion. The pinion is normally disengaged from the engine member b by springs l, m, and a second friction clutch, formed by a flange k<1> on the pinion and a member k<2> fixed on the armature shaft, comes into operation when the pinion is fully in mesh with the engine member.
Patent GB-267997-A (GB)
Title: Improvements in and relating to moulds for casting metals
IPC: B22C9/00
Filed: 1925-11-18
Abstract: 267,997. Ryner, A. Nov. 18, 1925. Mould materials for semi-permanent moulds comprise slabs of a mixture of sand and plastic material arranged between sheets of combustible fabric or paper. The slabs may be strengthened by sprigs of wire, asbestos &c., and are pressed around the pattern in one or more layers which in this case may be of different ingredients, the inmost preferably being refractory. The sprigs may be hooked or otherwise formed so that they can be joined by wire &c. Moulds.-To allow contraction and extraction of the casting without damage to it or to the mould, recesses are provided therein adjacent to flanges &c. and these are filled with sand and sawdust or other material which will char and yield during cooling. The Provisional Specification describes the use of shaped and dried or baked blocks for building up moulds.
Patent GB-337144-A (GB)
Title: Improvements in cigarette or cigar packages or boxes
IPC: B65D85/10
Filed: 1929-09-26
Abstract: 337,144. Cullen, P. Sept. 26, 1929. Contents, delivering; fittings, internal; lids.-A drawer-andshell package for cigarettes or cigars has an open-ended match container 10 arranged at the bottom of the drawer which, when the drawer moves outward a distance determined by a stud 15 on the shell and a slot 14 in the drawer, registers with an opening 11 in the shell so that matches can be obtained; a hinged lid 13 is arranged to be opened and closed automatically by the movements of the drawer. A matchstriking surface may be provided on the bottom 23. In a modification the bottom 23 may be notched. Specification 12903/04 is referred to.
Patent GB-651106-A (GB)
Title: Improvements in or relating to flexibly suspended handles for cycles and the like
IPC: B62K21/14
Filed: 1948-11-09
Abstract: 651,106. Handle-bars. BOER, R. C. DE. Nov. 9, 1948, No. 29123. [Class 136 (iii)] In flexibly suspended handles for cycles and the like in which a flexible connection is provided between handles and stem consisting of a number of springy steel bars 1 carried through openings in a part 2 of the stem and rigidly jointed to the handles 8 at both ends, each of the bars at its middle portion is rotatably but non-slidably mounted in the stem. A set of bearing blocks 3 of low friction material are housed in the part 2 of the stem 2a. Spaces 4 are provided between the blocks to allow adjustment of clearance by means of a screw bolt 6. The outside bars are double bent to prevent longitudinal movement of the bars in the bearings.
Patent GB-370343-A (GB)
Title: Improvements in operating washing machines
IPC: D06F37/36
Filed: 1931-10-20
Abstract: 370,343. Washing-machines. WACKER GES. FœR ELEKTRO-CHEMISCHE INDUSTRIE GES., DR. A., 20, Prinzregentenstrasse, Munich, Germany. Oct. 20, 1931, No. 29129. Convention date, Oct. 20, 1930. [Class 138 (ii).] In a machine which is oscillated at low speed for washing and rotated at high speed for drying, each operation is effected by a separate electric motor. The motor k drives the shaft b of the machine a through reduction gear i, h, f, e, of which the final wheel e is loose on the shaft and may be clutched thereto by means of the coupling member c. Periodic reversal of the shaft is effected by means of a reversing switch which may be timecontrolled or operated by the shaft or countershaft g. For centrifuging, the coupling member is moved to couple the shaft to the shaft of the other motor d which is provided with a speedcontrolling switch l. The gear wheel e may be fast on the shaft b which may then be fast with the shaft of the motor d and in this case the slow speed train is disconnected by axial movement of the pinion f along the countershaft g, the switch l of the motor d being interconnected with the pinion shifting device so that the motor d can be started only when the pinion is out of gear with the wheel e. The motor d may be braked at the end of the centrifuging operation.
Patent GB-171984-A (GB)
Title: Improved manufacture of durable preparations of active animal amylases
IPC: C12N9/96
Filed: 1921-11-02
Abstract: Animal amylases are obtained in stable form, either solid or in solution, by adding in the course of their preparation suitable water-soluble organic colloids such as gum, gelatine, gummy and gelatinous substances and their degradation products, mucous substances, soluble albumin derivatives, or soluble starches or dextrins.  Further, by addition of suitable chemicals in known manner, the ion concentration may be maintained at a value suitable for the preservation of an amylase.  In an example an active aqueous extract from an animal organ (salivary glands, pancreas &c.) is evaporated in vacuo and obtained in dry form upon an inorganic salt, such as sodium sulphate or phosphate, in known manner, with addition of a protective colloid such as gum arabic; the preparation may further be stirred at 40 DEG  C. with gum arabic solution and dried. The products may be used for pharmaceutical and other purposes.