baber/WOPTO huggingface dataset:
Patent GB-1317012-A (GB)
Title: Recovery of filter and particles
IPC: B04C5/00
Filed: 1970-06-22
Abstract: 1317012 Separation of solids in hydrocyclones; recovering filter aid P C WILSON and R P HUGHART 22 June 1970 [3 July 1969] 30112/70 Headings B2P and BID Filter aid particles are recovered from filter cake containing such particles by diluting the filter cake to form a liquid suspension and feeding the suspension to a hydrocyclone from which the filter aid particles, which have a greater specific gravity than the remaining constituents of the suspension, are discharged as underflow. Arrangements showing a number of hydrocyclones connected in series are described. In a preferred embodiment, Fig. 8, three hydrocyclones 22, 32, 42 are connected in series. The overflow 03 from hydrocyclone 42 is used to dilute the filter cake FC to form a feed FI to the hydrocyclone 22. During start up and prior to obtaining any overflow 03 the filter cake FC is diluted with water D1 flowing through a control valve 36 which is closed after start up. The underflows U 1  and U 2  from hydrocyclones 22 and 32 respectively are diluted with water D 2  and D 3  to form feeds F 2  and F 3  for hydrocyclones 32 and 42 respectively. The underflow U 3  from hydrocyclone 42 is recovered and the overflows O 1  and O 2  from hydrocyclones 22 and 32 are discarded.
Patent GB-617824-A (GB)
Title: Improvements in or relating to pocket knives and other hand tools
IPC: B26B1/02
Filed: 1946-10-10
Abstract: 617,824. Hand-tool handles. FAIREST, M. Oct. 10, 1946, No. 30234. [Class 61 (i)] [Also in Group XIV] In a pocket knife, screw-driver, file or like implement, wherein the tang 16, Figs. 3 and 4, of the blade or other tool is pivoted to a U- frame 19 that may enclose the blade and be swung therewith about a pivot 13 between the arms 12 of an elongated U-form member forming scales when the knife is to be shut and swung away from the blade to surround the scales and hold the blade rigid when the knife is open, the thickness of the U-frame at the tang end 20 is slightly greater than that of the tang, so that on closing the knife, the ends 20 slightly spring the edges of the scales at the tang end apart until the blade is within the scales, when the legs of the frame clear the scales, which spring together on to the tang. To open the knife, the ends 20 must spring the scales, and this prevents accidental opening. The pivot 13 holds the scales tight against the tang, the springing being permitted by resilience of the scales. The arms 12 are connected by a narrow neck 15. The width of the frame 19 is a tight fit over that of the scales over at least a part of its length, so that the frame can be sprung over one scale when the knife is open and clipped between the scales, to hold the blade rigid.
Patent GB-1514377-A (GB)
Title: Driving mechanisms for mining machines
IPC: E21C29/02
Filed: 1976-07-21
Abstract: 1514377 Rack and pinion-propelled mining machine EICKHOFF MACHINENFABRIK U EISENGIESSEREI mbH Gebr 21 July 1976 [23 July. 1975] 30287/76 Heading E1F [Also in Division B7] Haulage of a mining machine is by the engagement with a fixed rack 11 extending in the desired direction of movement of the machine of a driven sprocket wheel 25a carried by a support arm 27 pivotally mounted on the machine about a horizontal axis disposed substantially at right angles to the rack and the arm is constructed as at 24 to engage beneath the rack or beneath a guide rail extending parallel to the rack to maintain engagement of the sprocket wheel with the rack. Preferably two such mounted sprockets are so provided on the machine that the spacing between the sprocket wheels is different from the length of component sections of the rack. The or each arm may carry a roller or skid 24 for engaging beneath the rack. Such a roller can be positioned in a common vertical plane with the axis of the associated sprocket wheel. Thrust jacks 30 may act on the or each support arm in opposite directions to relieve radial loading of the sprocket wheel associated with the arm, the jacks being actuated selectively in dependence on the direction of movement of the machine.
Patent GB-211192-A (GB)
Title: Improvements in engines of the reciprocating fluid pressure type
IPC: F02F1/18
Filed: 1922-11-07
Abstract: 211,192. Ridley, C. Nov. 7, 1922. Cylinders; pistons.-A reciprocating-engine has cylinders and pistons with flat sides connected by curved portions 2, 2a. The cylinders may be of rectangular cross-section with curved corners. Reference has been directed by the Comptroller to Specification 13322/84.
Patent GB-391235-A (GB)
Title: Combined reducing and automatic closing valve
IPC: G05D16/10
Filed: 1931-12-01
Abstract: 391,235. Fluid-actuated valves. MORTON, R., 53, Princes Boulevard, Higher Bebington, Cheshire. Dec. 1, 1931, No. 30397. [Class 135.] A valve device adapted to function as a pressure regulator or as a pump or compressor governor has a piston valve member A with a narrow annular groove adapted to co-operate with inlet and outlet ports D, E in the casing. Controlling pressure is admitted through a port J to act on one end of the main piston and on the upper face of a smaller piston G attached thereto by a narrow neck. A loading spring F is arranged between a fixed abutment and an adjustable collar L mounted on a spindle passing through the pistons and provided with a head K bearing on the upper face of the larger piston. The outer faces of both pistons are subject to atmospheric pressure. In a modification the annular groove C in the piston is triplicated and the piston works in a correspondingly ported liner. In this form the pistons are made hollow to provide a housing for the loading spring which is arranged between an adjustable cap on the casing and an abutment adjustably secured to the valve member.
Patent GB-974499-A (GB)
Title: A circuit arrangement for producing potentials of given value but of a sign dependent upon received signal combinations
IPC: H03K19/082
Filed: 1961-08-23
Abstract: 974,499. Analogue to digital converters. TELEFONAKTIEBOLAGET L.M. ERICSSON. Aug. 23, 1961 [Aug. 23, 1960] No. 30473/61. Heading G4H. [Also in Division H3] A plurality of bi-stable circuits (see Division H3) are used in a digital voltmeter. The voltage EA to be measured is applied to one input of a voltage comparator DD together with a reference voltage ER having a value equal to half the maximum value measurable by the circuit. In the presence of a start voltage applied at terminal A of stage A 1  a synchronising pulse applied at the terminal B of stage A 1  will open the gate G1 and switch over a bi-stable circuit V1. In the absence of a further input to the circuit this will change the previously zero voltage at point Y to a value such that the voltage to be measured is increased by an amount equal to the reference voltage. If however the reference voltage was less than the voltage to be measured the comparator DD will apply a voltage to the bi-stable circuit V2 coincident with the synchronizing pulse so that the latter bi-stable circuit also changes over and the voltage applied at terminal Y is such that the reference voltage is subtracted from the voltage to be measured. The operation of bi-stable circuit V1 applies an enabling voltage to gate G1 of stage A 2  so that the next synchronizing pulse at B, in response to a comparison of the reference voltage with the modified voltage to be measured, applies at terminal Y of stage A 2  a voltage such that at the output of network N the voltage to be measured is effectively increased or decreased by an amount equal to half the reference voltage The process of comparison and addition or subtraction from the value to be measured continues along the stages. The circuit can be arranged to give a serial or parallel indication of the digital value of the analogue voltage. Fig. 1 (not shown) illustrates a circuit suitable for unit A 1  A 2  etc. in which bistable circuit V 1  comprises cross coupled similar transistors and bi-stable circuit V 2  comprises two complementary transistors.
Patent GB-258130-A (GB)
Title: A collapsable folding crate
IPC: A01K31/08
Filed: 1926-01-18
Abstract: .258,130. Rivers, H. Jan. 18, 1926. Folding boxes. - A collapsable or folding box or crate has the four sides c - - f hinged together along their vertical edges so as tc be capable of being folded on top of one another or of being folded around the base g which is hinged to the side f and secured in the set-up condition by its edges engaging grooves m at the bottom of the four sides; the free edges of the sides c, fare secured together by hinged plates j and bolts k or other suitable fastenings and the lid a, which is hinged by loop hinges to the side c, has beads b along its free edges which engage the inner surfaces of the sides when the lid is closed and prevent them collapsing inwards. In the collapsed condition the lid and bottom fold against the sides c, f respectively.
Patent GB-249215-A (GB)
Title: Improvements in or relating to vehicle wheels
IPC: B60B25/14
Filed: 1924-12-19
Abstract: 249,215. Goddard, M. E. Dec. 19, 1924. Addition to 163,806, [Class 144 (ii), Wheel tyres, Pneumatic &c.]. Rim flanges, tools for removing and replacing. - A lever i for manipulating a detachable rim flange which is secured by a bayonet-joint attachment and a spring- pressed locking bolt g, has two studs k, m adapted to enter respectively a hole n in the fixed part of the wheel and the hole o in the detachable rim flange which is engaged by the locking bolt.
Patent GB-1002525-A (GB)
Title: Improvements in or relating to electrical power cables
Inventor: STICKLAND FREDERICK GEORGE WIL
IPC: H01B7/28
Filed: 1963-08-01
Abstract: 1,002,525. Cables. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 23, 1964 [Aug. 1, 1963], No. 30595/63. Heading H1A. Parts at least of the core insulation, intercore spacers, sheathing &c., of a cable may be made from extrudible thermoplastic insulating material loaded with finely-divided zinc dust, or zinc dust with an admixture of powdered alumina, in order to improve its thermal conductivity. A three-core cable is described using a polythene/zinc dust mixture containing 40-50% by weight of the latter, which is of particle size 150 mesh (British Standard Screen). Different mixtures may be used for the various component parts of the cable. Mechanical properties may be improved by chemical cross-linking of the polythene or by the addition to it of isobutylene or butyl rubber. Polyvinyl chloride or unvulcanized rubber may be used instead of polythene.
Patent GB-281867-A (GB)
Title: Improvements in the control of hydraulic valves
IPC: F03B15/18
Filed: 1926-12-03
Abstract: 281,867. English Electric Co., Ltd., Deriaz, P., Thomas, W. D. J., and White, J. M. Dec. 3,1926. Stops, adjustable.-A. control gear for valves particularly applicable for use with valves used to admit liquid into a closed chamber of large volume for instance the chamber formed by the inlet pipe and spiral casing of a hydraulic turbine, is fitted with a stop device adapted to permit only a limited opening of the valve until the chamber is nearly or completely filled. The, pivoted stop 1 which co-operates with a rotating member 4 connected by a buffer springs 16 to a member 17 on a shaft 15 is under the dual control of a piston 10 acting through a rod 12 on an ann 13 and a cam 7 acting through a lever 9 and link 9<1>. The cam 7 is carried by a toothed wheel freely mounted on a shaft 6 and engaged by a toothed pinion on the shaft 15 and stops 20 are provided to limit the relative movement of the members 4, 17 and at the same time permit the stop to be pushed aside during the closing movement. In the closed position of the main valve the roller 8 rests on the raised part of the cam to the left of the notch so holding the stop 1 in its inoperative position as the main valve is opened the cam 7 is rotated in an anti-clockwise direction until the roller drops into the notch so placing the stop in the path of the member 4 to prevent further opening of the valve. When the pressure has built up in the receiving chamber it acts on the piston 10 to release the stop to permit further opening of the main valve. In the application shown in Fig. 3 the movement of the main valve is controlled by an auxiliary valve 21 working in a ported sleeve 22 and connected by a bell crank lever 26 to a control shaft 27. This shaft has a screw-threaded engagement with a non-rotatable nut 32 carried bv a member 34 connected to the main valves and is rotated by a worm wheel 28 slidably connected to it. The worm wheel engages a worm 29 on the shaft 15 which is adapted to be rotated by hand or by an electric motor acting through a. slipping clutch and toothed gearing. The control of the motor may be arranged so that at the end of the stroke of the servo motor in either direction the auxiliary valve is not brought back to its neutral so that the servo motor acts to hold the main valve in its adjusted position.
Patent GB-334100-A (GB)
Title: Process and apparatus for the preparation of dispersions
IPC: B01F3/12
Filed: 1929-10-09
Abstract: 334,100. Elkington, H. D., (Naamlooze Vennootschap de Bataafsche Petroleum Maatschappij). Oct. 9, 1929. Emulsions, making. - Concentrated dispersions, particularly of bituminous substances such as asphalt, tar, and pitch, dispersed with the aid of suspensions of clay, bentonite, colloidal metal oxides, silicates &c., are prepared by subjecting dispersions prepared in known manner to mechanical treatment, such as intensive beating, to reduce their viscosity, after which more material can be dispersed without reversal of phase occurring. A corresponding further addition o femulsifying agent is unnecessary, and the additional water required is correspondingly less than in the original dispersion. The pH of the dispersion may be regulated by addition of acid substances, such as sulphuric, chromic, or oxalic acids, aluminium sulphate, bichromate, or sodium phosphate, or basic sub. stances, according to the quantity and rate of dispersion desired, since although strongly acid dispersions, e.g. pH=3 to 3.5, will take up more dispersed material than more alkaline ones, they tend to increase the viscosity. A dispersion containing asphalt, dispersing agent and water in the proportions 55, 4, and 41 per cent respectively, after beating and adding asphalt and water in proportions of 66 to 34 gives a product in which the proportions are 61, 2, and 36 per cent respectively. The pH of a dispersion after beating may be raised from 6.2 to 3-3.5, and after further beating more of the same or a different asphalt may be dispersed. A suspension of the dispersing agent from reservoir 1, and the material to be dispersed from reservoir 2, are fed to a stirring apparatus 3. Viscous substances, such as asphalt, are first preheated and may subsequently be cooled in cooling apparatus 42. The mixture is caused to move downwards inside the cylindrical sleeve 7 and upwards when outside by the arrangement of screw blades 6. The dispersion is thinned by beating in apparatus 14 having shafts 27 and flat blades 15, and is led to reservoirs 17, 41 from which it is pumped to a second beater 21 into which fresh material to be dispersed is introduced through pipe 24, and electrolytes, if necessary, through pipe 26. The concentrated dispersion is led to reservoir 43.
Patent GB-1243210-A (GB)
Title: Improvements in or relating to pneumatic elevators for lifting granular solids
IPC: F26B17/10
Filed: 1968-06-27
Abstract: 1,243,210. Pneumatic conveyers. INSTITUT NATIONAL DE L'INDUSTRIE CHARBONNIERE. 27 June, 1968 [12 July, 1967], No. 30694/68. Addition to 928,829. Heading B8A. [Also in Division F4] In a pneumatic elevator for granular material an open receptacle 1 and a closed receptacle 2 having a common fluidizing floor 4 and being interconnected by an opening 3, gases heated by a burner 5 are introduced into the receptacle 2 above the fluidized bed. At the top of the annular elvating tube 6, the material is evacuated across a screen and the gases pass through a heat exchanger 9 which preheats the air, compressed by a fan 10, used to produce the hot gases and to fluidize the material on the floor 4.
Patent GB-617677-A (GB)
Title: Improvements relating to filters
IPC: B01D29/00
Filed: 1946-10-15
Abstract: 617,677. Centrifugal machines. SUTCLIFFE, SPEAKMAN & CO., Ltd., and EDWARDS, W. E. Oct. 15, 1946, No. 30699. [Class 23] A centrifugal pressure filter comprises a hollow drum or casing 1, a hollow shaft 3 mounted for rotation in the casing 1, filter leaves or screens 8 secured on the shaft 3, and in communication with the hollow shaft 3 and means for cleaning the filter leaves 8 without dismantling the filter after the filtering operation is completed. Each filter leaf consists of a pair of former discs 9 of wire mesh with an intermediate wire mesh disc 19, disposed between secondary discs 10 of fine gauze, the whole being covered with filter cloth. During the filtering operation the liquid passes inwardly through the leaves and via holes 15 and the hollow shaft 3 to the outlet 16. The foreign matter in the liquid collects on the outside of the screens and after the filtering operation is completed a spray of liquid from pipe 29 directed radially on to the screens while they are rotating washes the foreign matter away in the form of a sludge.
Patent GB-745025-A (GB)
Title: Improved edge guiding and supporting means for sliding members such as windows
IPC: B60J10/04
Filed: 1953-11-06
Abstract: 745,025. Window guides. KENYON & PLATTS (NARROW FABRICS), Ltd., W., and FIELDING, E. Nov. 8, 1954 [Nov. 6, 1953], No. 30712/53. Class 20(3). An edge of a sliding member such as a glass window a is guided and supported by a channel c lined with a narrow fabric d woven from a durable and inexpensive textile material such as cotton having at least two plies and an integral central longitudinal reinforcement or enlargement d<SP>1</SP> formed by a localised concentration of body warps or by the use of binder warps. As shewn the window pane a is guided at the top in a metal channel c secured to the frame b and at the bottom is provided with an edge reinforcement e which forms .the channel c and slides relative to a cylindrical edge g<SP>1</SP> on a rigid member g secured to the frame b. The.channel c has inwardly directed beads c<SP>1</SP> and the fabric may have reinforcements or enlargements d<SP>3</SP> similar to that d<SP>1</SP>. In a modification the pane a is provided with an edge reinforcement forming a projecting tongue which is guided by a fabric lined channel secured to the frame b.
Patent GB-1560112-A (GB)
Title: Liquid fuel burner systems
IPC: F23K5/22
Filed: 1976-07-23
Abstract: The burner installation has an evaporator (1), in which liquid fuel is evaporated. The fuel vapour is mixed with air and supplied to a burner head for combustion. The level of the liquid fuel in the evaporator (1) is kept constant during operation by means of a storage container (2) with an invariable liquid level. The storage container (2) is connected to the evaporator (1) via a check valve (6). When the installation is switched off, the evaporator (1) is flooded with cold liquid fuel from an auxiliary container (3). The rapid lowering of the temperature in the evaporator thus created prevents a loss of vaporous fuel into the environment. <IMAGE>
Patent GB-765599-A (GB)
Title: Ground-based training apparatus for simulating aircraft cabin pressurizing systems
Inventor: STERN ROBERT GOTTLIEB
IPC: G09B9/16
Filed: 1954-10-26
Abstract: 765,599. Grounded aircraft trainers. CURTISS-WRIGHT CORPORATION. Oct. 26, 1954, No. 30900/54. Class 4. A simulated aircraft cabin pressurizing system for training purposes comprises means responsive to a quantity representing simulated vertical airspeed for deriving a quantity representing simulated true altitude, means responsive to this latter quantity for deriving a pressure difference quantity representing scheduled pressure differences between simulated cabin altitude and simulated true altitude, means adjustable by the instructor for modifying the pressure difference quantity to represent simulated cabin pressure leak, and means responsive to the altitude quantity and pressure difference quantity for deriving a quantity representing cabin altitude. Fig. 2 shows a graph in full line of the pressure difference, and in dotted line of the equivalent cabin altitude, plotted against true altitude. The equivalent altitude equals the true altitude from 0-5000 ft. and is kept at the latter value until true altitude reaches 15,000 ft., when it increases gradually to 15,000 ft. when the true altitude is 30,000 ft. Thereafter, the true and equivalent altitudes increase equally. In Fig. 1 a summing amplifier 2 is fed by an alternating current signal CVAS from the simulated flight computer, which signal reverses in phase when the vertical airspeed reverses in direction and corresponds thereto in magnitude. The amplifier 2 feeds the control winding 3 of an electric motor, the speed and direction of rotation of which depends on the magnitude and phase of the output of amplifier 2. The other winding 5 of the motor is fed from a supply e@ 90 degrees out of phase with the ouput of amplifier 2. Motor 4 drives a generator 6 and, through a reduction gear 9, the slider contacts 11 and 12 of potentiometers 13 and 14, and the movable coil 38 of a synchronous transmission 36, 37 positioning a true altitude meter 35. The generator 6 has a coil 8 fed from a supply e 2  in phase with supply e 1  and generates a voltage E fb  in coil 7 fed to amplifier 2 as a feed back signal. The potentiometer 14 is supplied with a voltage +Eac, and the slider 12 derives a signal proportional to true height which is fed to a summing amplifier 21. The potentiometer 13 is supplied with a voltage -Eac at tap 13a, and is shunted as shown to have a characteristic such that slider 11 will pick-off a signal representing the pressure difference at any given height. This signal may be decreased by the instructor's potentiometer 16 to simulate leakage, and is then fed to the summing amplifier 21, which drives a motor 24 the shaft of which positions the slider 28 of a potentiometer 29 providing a positional feed back signal to amplifier 21, and positions an effective cabin altitude meter 31 through a remote synchronous transmission 32, 33.
Patent GB-360162-A (GB)
Title: Improvements in or relating to the winding handles of gramophones
IPC: G11B17/00
Filed: 1930-10-16
Abstract: 360,162. Hand driving-mechanism. HIBBARD, C. G., 75, Arundel Street, Sheffield. Oct. 16, 1930, No. 30959. [Class 136 (ii).] A winding-handle for gramophones comprises a metal tube or sleeve a adapted to be secured to the motor-winding shaft b, as by a screwed part c, the cranked part d of the handle being pivoted at e<1> so that it can be turned into the axis of the sleeve a and telescoped therein, as shown in Fig. 2, the hand grip or knob then lying flat against the wall of the gramophone casing. A stop pin e on the sleeve a engages a flange on the inner part of the handle to limit the outward sliding movement. In the operative position, the cranked part d engages a radial slot in a cap f on the sleeve a so as to drive the latter and the shaft b.