baber/WOPTO huggingface dataset:
Patent GB-445115-A (GB)
Title: Improvements in classifiers
IPC: B03B5/50
Filed: 1934-10-03
Abstract: 445,115. Washing granular materials. DORR CO., Inc., 247, Park Avenue, New York, U.S.A. Oct. 3, 1934, No. 28356. Convention date, Oct. 19, 1933. [Class 82 (ii)] [See also Group I] In a classifier of the type comprising a tank having a sloping bottom up which settled particles are carried by a reciprocating rake the deep end of the tank is closed to form a pocket into which the rake extends and the liquid and lighter particles rise through one or more pipes or conduits placed above apertures in the cover and terminating at about the normal liquid level in the tank so that the liquid &c. overflows. The feed enters the tank at a point spaced from the lower ends of the pipes or conduits. The effective cross-sectional area of the rising liquid column in the pipes &c. can preferably be varied. The particles which do not settle at once in the main part of the tank are thus subjected to further classification in the comparatively quiescent upward currents in the pipes. The drawings show a double classifier of the Dorr type comprising two compartments separated by a partition 17, Fig. 1, each compartment having a sloping bottom 12 and the usual reciprocating rake 20. The deep end of each compartment is provided with a cover 33 which extends from the bottom wall of the tank to a point above the normal liquid level 32. With each cover is associated a pipe or conduit 37 communicating with the tank through an opening 36 in the cover. The pipe 37 extends upwards to about the level 32 and is provided with a splash plate 39 round part of the circumference to direct the overflow into a launder 38. Means are preferably provided to vary the effective cross-sectional area of the pipe, for example cylinders 40 of varying diameters may be inserted in the pipe, the cylinders rising above the liquid level and being supported on the pipe 37 by arms 42. Baffles are preferably provided to ensure a quiescent upward flow; the baffles may be radial and attached to the outside of the cylinder 40, or the whole of the pipe may be divided into a number of vertical channels by means of intersecting vertical baffles or by a plurality of vertical tubes, in which case a cylinder may be placed on the baffles to restrict the effective area of the pipe. The covers 33 are also provided with air vents 35 extending upwardly to a point above the liquid level. The pulp is fed by means of conduits 48, 49 to points in the classifier compartments nearer the shallow end than the pipes 37, either through the covers 33 or to points beyond the ends of the covers. Water may be supplied to the tank as in the usual Dorr classifiers.
Patent GB-712161-A (GB)
Title: Evaporator door and hinge assembly for refrigerators
IPC: F25D23/02
Filed: 1952-11-11
Abstract: 712,161. Refrigerators. MOTOR PRODUCTS CORPORATION. Nov. 11, 1952 [March 31, 1952], No. 28451/52. Class 29 [Also in Group XXV] The pivots 49 of the evaporator compartment door 20 are fixed to the opposite sides of the liner 21 of the refrigerator and the door, which opens downwardly, is returned to its closed position by a torsion wire spring 55 coacting with the pivots. The door comprises inner and outer flanged panels 23, 22 of plastic secured together with insulating material between them and is reinforced by metal strips 34 at the sides which project downwardly at 35 and are apertured to take over the pivot pins 49 on plates 48 fixed to the sides of the inner liner 21 by screws 50. One of the panels has reinforcing ribs 33 and is formed to provide a recessed handle at the top. The ends of the pivots are slotted to anchor the reversely bent ends of the wire spring 55 which passes between the panels and is bent upwardly at 56 and secured to one of the panels at 59 so that it is twisted as the door is opened. Stops 53 on the strips 34 limit the downward movement of the door.
Patent GB-233375-A (GB)
Title: Improvements in or relating to electron emitting cathodes
IPC: H01J1/14
Filed: 1923-11-12
Abstract: 233,375. Bullimore, W. R. Nov. 12, 1923. Filaments.-A filament comprises a base or refractory metal or alloy of high specific resistance and melting point coated with one or more noble metals or an alloy thereof; an electron emitting coating of one or more compounds of the alkalineearth metals may be united to the composite core. A nichrome wire may be coated with platinum; or molybdenum or tungsten may be coated with platinum or palladium. Hoskin's alloy may also be used as the core. A coating of platinum may be formed by passing the core through a solution or suspension of a salt such as ammonium platinochloride, and the coating heated subsequently to cause platinum to be dissociated and to adhere to the core. Or the core may be coated in the form of an ingot and drawn by the usual methods. The coating may also be applied by cathodal deposition. The electron-emitting coating may be applied by immersing the composite core in a solution of nitrates of the alkaline-earth metals, drying, and heating to 1000‹ C. to reduce the nitrates to oxides. Or the coating may be applied in the manner described in Specification 233,374, [Class 39 (i), Electric lamps, Arc &c.].
Patent GB-404107-A (GB)
Title: A portable hydraulic device for testing the strength of hollow vessels
IPC: G01N3/12
Filed: 1932-10-13
Abstract: 404,107. Testing strength of hollowware. SKINNER, A., 14, Myrtle Grove, Low Fell, Co. Durham. Oct. 13, 1932, No. 28617. [Class 106 (ii).] Apparatus for testing the strength of portable fire extinguishers comprises a portable fluid pressure generator provided with means for connecting it to the interior of the extinguisher and means for releasing the pressure when it reaches a predetermined value. The pump cylinder 1 is provided with a flanged base 2. The plunger is pivoted at 5 to a handle 6 connected by a pivoted link 8 to a lug 9 on the cylinder top 3. Coupled to each side of the cylinder is a valve casing 10, 11 of which the casing 10 is coupled to a T-piece 15 leading to a gauge 18 and to a clamp 16 securing the flexible pipe 14. The casing 11 is connected to a tank 12. A pipe 13 leads from the part 17 through a valve 20 and a relief valve 21 to the tank. Liquid is pumped from the tank through the non-return valves 11, 10 to the container under test from which the contents have been emptied and replaced by water, the pressure being indicated on the gauge. When the test pressure is reached the relief valve 21 opens and returns liquid to the tank. In a modification, the pipe 13 is dispensed with and the relief valve placed over the valve 10.
Patent GB-355984-A (GB)
Title: Improvements relating to fasteners for driving belts and the like
IPC: F16G3/04
Filed: 1930-09-25
Abstract: 355,984. Belt fastenings. HISCOCK, H. S..and HISCOCK, R. S., Marlow.Street, Blackheath, near Birmingham. Sept. 25, 1930, No. 28674. [Class 80 (i).] Two clips of cardboard, paper, or the like are employed for holding a series of staplelike belt-fastener elements in position for attachment to the belt end, the clips being left in position when the staples are hammered in. The clips c are of V-form and their slots d has enlarged ends f and may have enlarged centres i. The fastener elements a may have limbs of varying lengths. The staples may be held in a jig and all pressed simultaneously into the belt end, or they may be operated by a moving roller to engage in succession. The clips may be saturated with adhesive or may be smeared over at the bends, and produce.a cushioning effect between the staples and the belt and pulleys.
Patent GB-1468820-A (GB)
Title: Power driven rotary tilling implements for gardening cultivation  and the like
IPC: A01B33/02
Filed: 1974-06-05
Abstract: 1468820 Rotary cultivating implements MECHGARD Ltd 5 June 1974 [16 June 1973] 28720/73 Heading A1B An output shaft 38 of a powered rotary cultivator extends from opposite sides of a gear box housing 10 to receive slip fittingly and rotatably two first cylindrical sleeve members 18 having pairs of aligned slots 28 and 32', 32", and tines 22, 24, one pair of slots 28 being perpendicular to the other pair 32', 32", the shaft 38 also receiving screw threadedly as at 64, 66 two second sleeve members 20 which also have tines and which, when fully screwed, press the sleeve members 18 towards the housing 10, the arrangement being such that the tines 22, 24 of the sleeve members 18 may be arranged in or out of alignment with the tines (not shown) of the sleeve members 20 by rotating the first sleeve members 18 about the shaft 38 until a selected pair of aligned slots register with a diametral hole in the shaft 38 whereby the sleeve members 18 can be locked to the shaft 38 at the selected position by pins 26, 30 entering the slots and the diametral hole. Drive to the shaft 38 is transmitted from a worm gear (not shown) rotated by a drive shaft (not shown) extending from a motor housing 12 to a toothed gear wheel 34 splined to the shaft 38.
Patent GB-645795-A (GB)
Title: Improvements in and relating to electrical plug-in connectors
Inventor: HEATH CLARENCE WILLANS
IPC: H01R31/00
Filed: 1948-11-04
Abstract: 645,795. Two-part couplings. CARR FASTENER CO., Ltd. Nov. 4, 1948, No. 28724. [Class 38 (i)] A plug-in connector comprises a resilient insulating body 1 having projecting pins 3 which are formed integrally with a bridgepiece 4 which is located within a cavity in the body and pins are secured in place by the resilient material of the body overlapping a shoulder on the edge 3a of the pins. The pinreceiving holes 5 are of less diameter than the pins inserted therethrough, the walls 2 of the body being extended to form the cavity. A blank, Fig. 4, having plates 6 joined by a neck 7 is rolled into a cylindrical shape and bent to form the pins 3 and the bridge-piece 4, the plates 6 preferably being of different sizes so that the connector can be plugged correctly into its co-operating socket member.
Patent GB-843180-A (GB)
Title: Improvements in or relating to processes for the manufacture of terephthalic acid
Filed: 1956-09-20
Abstract: Terephthalic acid is prepared continuously by a process wherein a starting material comprising one or more compounds of general formula:  <FORM:0843180/IV(b)/1> wherein R is an alkyl radical containing at least one carbon atom and R1 is an alkyl radical containing at least two carbon atoms, is oxidised to terephthalic acid in the gaseous phase in the presence of at least one oxidation catalyst, oxygen, air or another oxygen-containing gas serving as oxidation agent.  In examples: (1) p-ethyl-toluene alone or admixed with p-diisopropyl-benzene is passed in a current of air at 360 DEG or 400 DEG C. through a vanadium pentoxide catalyst and terephthalic acid is obtained by cooling the exit gases; (2) p-ethyl-toluene vapour is passed together with steam and nitrogen oxides through vanadium pentoxide under pressure and at over 200 DEG C., there being sufficient steam present to prevent nitration.  Specifications 295,270, 296,071 and 315,854 are referred to.
Patent GB-1433696-A (GB)
Title: Jet propulsion engines
IPC: F02K7/16
Filed: 1974-06-28
Abstract: 1433696 Gas turbine ducted fan engines GENERAL MOTORS CORP 28 June 1974 [2 July 1973] 28911/74 Heading F1J The invention relates to a gas turbine ducted fan or by-pass type jet engine in which provision is made for burning fuel in the fan duct downstream of the fan, the engine being suitable for operation up to supersonic speed, the fuel supply to the main combustion equipment being cut-off at a transition value of the forward speed, the core engine then windmilling and the fan turbine being driven by air delivered by the fan, so that the fan operates to supercharge the duct burner during a range of forward speed greater than the transition value. The engine shown comprises a front fan 22, a main compressor 28, main combustion equipment 30, HP turbine 31 which drives the compressor through shaft 32, and an LP turbine 38 which drives the fan through shaft 23. Combustion equipment comprising fuel burners 48 and flame stabilizing equipment 50 is disposed in the fan duct. A variable area nozzle 40 is provided at the outlet of the jet pipe 39, and a variable area nozzle 14 is provided at the outlet of the fan duct 16. Variable outlet guide vanes 24 are provided downstream of the fan blades, and variable inlet guide vanes 36 are provided at the inlet of the fan turbine 38.
Patent GB-349882-A (GB)
Title: Improvements in and relating to weighing apparatus
IPC: G01G23/30
Filed: 1930-09-27
Abstract: 349,882. Weighing-apparatus. FITZPATRICK, H. D., 94, Hope Street, Glasgow. -(Naamlooze Vennootschap Maatschappij tot Vervaardiging van Snij machines Volgens van Berkel's Patent en van Andere Werktuigen; 33, Boezemsingel, Rotterdam, Holland.) Sept. 27,1930, No.28992. [Class 143.] Weighing apparatus is provided with electrical illuminating means adapted to come into operation automatically whenever the weighing mechanism is moved away from its zero position, and which, by the manipulation of a contact-making device, can be made to function continuously when desired. The lamp circuit 17, 18 passes through two pins 5, 6 arranged in a fixed socket 3. A third pin 4 is connected to one end of a spring arm 9 of conducting material the other end of the arm being situated in the path of a moving part of the weighing mechanism, for example, the weighbeam 2, so that in the zero position of the weighbeam the arm is slight flexed and removed from electrical contact with a conducting arm 7 connected to the pin 6. Thus, when the pins 4, 5 are electrically connected by means of an insulating plug 11, Fig. 4, bearing two electrically-connected metal sockets 12, 13, the lamp will be illuminated when the weighing mechanism moves from its zero position. In the zero position the lamp remains unilluminated. By inserting the plug 11 so that the pins 5, 6 are electrically connected the arms 7, 9 are short-circuited and the lamp is continuously illuminated irrespective of the position of the weighing mechanism. The plug is provided with a feather 14 to engage one or other of two grooves 15, 16 in the socket 3,
Patent GB-375169-A (GB)
Title: Improvements in and relating to bladed wheels for turbines
IPC: F01D5/02
Filed: 1931-10-19
Abstract: 375,169. Turbine blades. SOC. POUR LA FABRICATION DES MOTEURS ET TURBINES, 38, Rue des Haies, Paris. Oct. 19, 1931, No. 29005. Convention date, Oct. 18, 1930. [Class 110 (iii).] Turbine blades 8 have root portions 7 which are clamped between channel-shaped crown rings 4 by the bolts 5 which secure the rings to the rotor side-plates 1. The principal mass of the rings 4 is separated from the plates 1 to prevent conduction of heat. At the periphery the blades have tongues 13 which are clamped between channelled shrouding rings 12. These rings minimize the effects of centrifugal force. The blades may be cut from stock of circular section. The structure may be readily dismantled, and is suitable for a turbine to be operated by combustion products.
Patent GB-838733-A (GB)
Title: Improvements in or relating to tubes and their production
IPC: B29C48/03
Filed: 1957-09-16
Abstract: A tube consists of, at least predominantly, a crystalline linear polymer of propylene of molecular weight of at least 50,000; the polymer may contain an amorphous polypropylene of molecular weight of at least 50,000.
Patent GB-352828-A (GB)
Title: Improvements relating to centrifuging salts
IPC: B04B11/04
Filed: 1930-09-29
Abstract: 352,828. Centrifugal machines. NAAMLOOZE VENNOOTSCHAP SILICA EN OVENBOUW MIJ, 17, Raamweg, The Hague.-(Assignees of Otto & Co. Ges., C.; 9, Christstrasse, Bochum, Germany.) Sept. 29, 1930, No. 29122. Convention date, Sept. 28, 1929. [Class 23.] Strainer separators; discharging.-The removal of salt from a centrifuge is facilitated by a system of chains hanging in the drum and which can be lifted to break the salt coating. In the example shown, four chains f hang down the wall of the perforated drum c, a horizontal chain g passes round the base of the drum, and four chains h extend radially inwards to the hood e. The wet salt is supplied from the ladle a and the liquid is thrown through the drum wall and passes away through the pipe d. After the centrifuging, the pins n are attached to the hood e and the hooks k to rings i on the chains h; the chains and the hood are then lifted by means of the winding drum m to break the salt deposit. When the lifting apparatus is not in action the hooks k are inserted in rings o.
Patent GB-650372-A (GB)
Title: Improvements relating to ventilators
IPC: F24F13/15
Filed: 1948-11-11
Abstract: 650,372. Louvre ventilators. DAVIES, L. G. Nov. 11, 1948, No. 29278. [Class 137] A ventilator comprises a number of louvres pivoted in the sides of a rectangular frame, each louvre having narrow lips formed on its long edges, so that the lips on adjacent louvres co-operate when closed together to form a weather seal, an operating link connecting the louvres when fully open lying wholly within the depth of the frame. The figure shows a ventilator for mounting on the exterior wall or roof of a building. A number of thin sheet metal louvres 16 are carried on pivots 20 secured to the vertical sides 5 of a boxlike frame. The long edges of each louvre are reversely bent to form lips 17 and 18 which together form a weather seal when the ventilator is closed, any rain water running off the louvres being discharged through an opening 29 in the bottom of the frame. The ends of each louvre are bent to form ears 19 which are drilled for pivots 20 and for pivots 21 by which each louvre is pivotally secured to a link 22. This link is raised or lowered to close or open the ventilator by a lever 23, which can be operated directly or from a remote position through suitable linkage.
Patent GB-292927-A (GB)
Abstract: 292,927. Liesens, H. June 25, 1927, [Convention date].- Void (Published under Sect. 91 of the Acts]. Composition fuel briquettes, nuts and agglomerates are formed by intimately mixing with coal dust, charcoal, sawdust, or other carbonaceous materials three per cent of manioc flour, two per cent of pitch or bitumen and 1 to 1¢ per cent of lime, the materials being mixed at the usual temperature for making briquettes with pitch. The proportions may be varied according to the nature of the fuel employed-and the purposes for which the finished product is required.
Patent GB-1389927-A (GB)
Title: Process and an apparatus for consolidating black powder
IPC: B30B5/06
Filed: 1972-06-22
Abstract: 1389927 Consolidating black powder WASAGCHEMIE GmbH 22 June 1972 [3 Aug 1971] 29326/72 Heading B5A In a method of consolidating black powder (a mixture of potassium nitrate, sulphur and charcoal), the powder is deposited on to the lower run 3 of a double belt machine, consolidated by a pair of rollers 13 and then pressed in two stages by an initial press 5 and a final press 7, the final press exerting a greater pressure than the initial press. The presses, which are hydraulically operated, are movable along the length of the belts by means of rollers 10 guided in rails 11. By alternate actuation and movement forward of the presses, the pressed sheet is advanced through the apparatus, i.e. actuation of press 5 and its movement forward with simultaneous movement backwards of unactuated press 7, followed by actuation of press 7 and its movement forward with simultaneous movement backwards of unactuated press 5 (Figs. 3-5, not shown).
Patent GB-711633-A (GB)
Title: Improvements in and relating to electronic amplifiers
Inventor: SYKES WILLIAM HARRISON
IPC: H01J25/52
Filed: 1951-12-14
Abstract: 711,633. Valve amplifying circuits. ENGLISH ELECTRIC CO., Ltd. March 13, 1953 [Dec. 14, 1951], No. 29340/51. Class 40 (6) A square-law D.C. amplifier comprises a magnetron in which the signal to be amplified is applied to a deflecting coil 13 and whose H.T. supply is obtained over a load resistance 11 of such value that the anode current can never reach saturation value. The magnetic field may be given a fixed bias by means of a permanent magnet. It is demonstrated in the Specification that when operated in this manner the amplifier is in a large degree unaffected by changes in H.T. and heater supplies.'
Patent GB-1349956-A (GB)
Title: Fungicidal compositions and a process for their preparation
IPC: A01N47/38
Filed: 1971-06-23
Abstract: 1349956 Fungicidal compositions SIPCAM SOC ITALIANA PRODOTTI CHIMICI E PER L'AGRICOLTURA-MILANO-SpA 23 June 1971 [23 June 1970] 29502/71 Heading ASE A fungicidal composition comprises a mixture of at least one compound of the formula: in which R is an alkyl group with 1 to 4 carbon atoms with at least one compound (II) selected from: dodecyl guanidine acetate (Dodina) 1, 4-dithiaanthraquinone-2, 3-dicarbonitrile (Dithianon) trichloromethylthio - tetrahydrophthalimide (Captan) trichloromethylthio - phthalimide zinc ethylenebisdithiocarbamate (Zineb) manganese ethylenebisdithiocarbamate (Maneb) manganese and zinc ethylenebisdithiocarbamate (Mancozeb) zinc propylenebisdithiocarbamate (Propineb) zinc ethylenebisdithiocarbamate/thiuram complex (Metiram) tetramethylthiuram disulphide (TMTD) zinc dimethyldithiocarbamate (Ziram) iron dimethyldithiocarbamate (Ferbam) complex salt of zinc and dimethyl- and ethylenebisdithiocarbamic acids (Zireb).
Patent GB-228656-A (GB)
Title: Improvements in and relating to electric regulating systems
IPC: H02P9/00
Filed: 1923-11-22
Abstract: 228,656. British Thomson-Houston Co., Ltd., and Parry, R. D. Nov. 22, 1923. Regulation, automatic.-Constant current is maintained in mains b, which interconnect one generating station with mains a subjected to a varying load, by controlling the admission of motive power to a prime-mover driving a a generator, which constitutes an auxiliary source supplying the mains a. An increase of load in the main a causes a momentary increase of current in mains b and a corresponding increase in a control coil c, thereby moving a lever d to engage contact e and energise a coil g from a direct current supply o. This causes moving contacts k of a reverser n, n<1> to engage contacts n and complete the circuit of a series motor j which opens the steam valve or alters the governor setting of the prime mover. A decrease of load in the mains a causes reverse operation of the motor j. In order to prevent hunting due to the time lag between the operation of the motor i and the corresponding change of speed of the prime mover, a time lag device is inserted in the circuit of the motor j. This device comprises a coil t and contacts s, s<1> in the motor circuit. Energisation of coil t causes a core t<1> controlled by a dash-pot u to move, and after an interval, sufficient for the actuation of the admission mechanism by a small amount, to open the contacts s, s<1>. After a further interval sufficient for the speed of the prime mover to have changed to the full extent corresponding to alteration of the admission mechanism the contacts s, s<1> are closed and the operation is repeated until the closure of the contacts has no effect on account of there being no circuit at contact e e<1>. The movable contact is arranged as a pivoted lever s<1> operated by an overshot spring and lost-notion device from the core t<1>.