baber/WOPTO huggingface dataset:
Patent GB-542605-A (GB)
Title: Improvements relating to the clarification of liquids
IPC: B01D21/00
Filed: 1940-06-18
Abstract: 542,605. Clarifying liquids; zinc oxide; magnetic separators. WALSH, C. L., and MAY, J. June 18, 1940, Nos.. 10544 and 10831. [Classes 46 and 111] [Also in Groups II and III] To separate finely divided suspended matter from a liquid, colloidal gelatinous precipitate is formed in the liquid in the presence of finely-divided magnetic material; the gelatinous precipitate entrains both the suspended matter and the magnetic material and is separated from the liquid by means of a magnetic separator. The process may be applied in the purification of industrial effluents or of vegetable or mineral oils. An example is described of its use in recovering zinc oxide from a suspension. Suitable colloidal substances may be extracted from vegetable matter for example the flesh of sisal or other plants of the agave family and Sansevieric the flesh of bast fibre plants, and sugar beet pulp or mucillaginous extract from linseed, bulrush or phormium tenax may be used. The extracts are added in sol form and yield gelatinous precipitants on reaction with electrolytes which may be added for the purpose if not already present in the liquid. Acid mucilage of the common bulrush may be used without additional reagent. Trisodium phosphate with calcium chloride and with or without sodium aluminate may be used to give a gelatinous precipitate of calcium phosphate. The magnetic material, iron or magnetic oxide, may be added to the suspension either separately or with the other treating agents. As magnetic separator a rotary drum or inclined belt may be used. The liquid is directed over the drum at a point where the surface is in the field of electro- or permanent magnets; the solid is retained and carried to a position where there is no magnetic field so that it falls away or is removed by non-magnetic brushes. The colloid may be dissolved and separated from the solid matter for re-use by treatment with sodium hexametaphosphate, trisodium phosphate, sodium carbonate, sodium silicate or other appropriate reagent. The magnetic material can then be recovered by means of a magnetic separator. When an alkaline sol is used for treating vegetable oils, the alkalinity may by neutralized by adding tartaric acid or an aqueous acid extract of rhubarb. The first Provisional Specification refers to the use of salts of alginic acid as suitable colloidal substances.
Patent GB-914473-A (GB)
Title: Method of and apparatus for continuously extracting products from solid materials
IPC: C13B10/10
Filed: 1961-03-23
Abstract: 914,473. Extracting solids with liquids. F.M.C. CORPORATION. March 23, 1961 [March 28, 1960], No. 10581/61. Classes 84 (1) and 129. In a continuous process for the solvent extraction of a solid wherein the solid is confined under a high pressure atmosphere and preferably high temperature and intermittently sprayed with a high-pressure spray of solvent, and the spent solids and solvent extract are removed from confinement with a minimum loss of pressure, solids to be extracted are fed via the pressure feed valve 7 into the lower end of an inclined pressure vessel 4 wherein it is extracted and conveyed to the upper end of the vessel by the screw conveyer 6 and discharged by means of the discharge valve 9. The highpressure atmosphere in the vessel is controlled and maintained by means of the automatic control valve 52 in conduit 51 and the temperature controller 52a affecting the gas source, and vent valve 53 controlled by an automatic pressure valve 54 affecting a vent in the vessel. Solvent under pressure from pump 31, heat exchanger 32, meter 39 and swivel joint 28 enters the hollow shaft 11 of the conveyer 6 and issues intermittently from the aligned nozzles 21 when they are facing the solid (i.e. generally downwards), the time and period of flow being determined and controlled by the cam 44 (on spindle 14 connected with tube 11) and actuator 43 which operates the switch 42 controlling the solenoid-operated impulse control valve 41. Entry of solvent is also controlled by the automatic control valve 38 actuated by the liquid level control 37, thus preventing the liquid level in vessel 4 exceeding a predetermined height, and by means of a piston 23 close fitting in tube 11 which is movable by shaft 26 and which may be used to prevent the access of solvent to one or more sucessive nozzles at the lower end of tube 11, thus regulating the quantity of solvent being delivered. The liquid extract is withdrawn from the lower end of the vessel when the concentration of extract exceeds a predetermined minimum as measured by the concentration controller 58 connected to valve 58a and may pass via settling tank 59, filter 61 and cooler 62 for further processing, the solid being largely held back in the extraction vessel by the bevelled-edged disc 18 on the lower end of the tubular shaft 11. The process is described with reference to the extraction of coffee with water using water as solvent and steam to provide the high pressure atmosphere. Reference is also made to the extraction of tannin from tanbark and protein supplement or soup stock from bone.
Patent GB-205442-A (GB)
Title: A device for supporting rackets whilst playing lawn-tennis and like games
IPC: A63B69/38
Filed: 1923-04-18
Abstract: 205,442. Page, A., and Fleming, T. G. April 18, 1923. Tennis-practising appliances. - A device for assisting lawn tennis &c. players to hold the racket correctly during play comprises an arm band 1 connected by a strap 8 to the head of the racket. The arm band is adjustable to suit different players and is attached to the strap by a swivel 5. The free end of the strap is looped round the racket frame and is secured to one of a series of fastenings 11.
Patent GB-826241-A (GB)
Title: Improvements in motor vehicle power steering arrangements
IPC: B62D5/06
Filed: 1956-04-06
Abstract: 826,241. Vehicle power steering. ONDE, M. A., and GUERIN, J. April 6, 1956 [May 3, 1955], No. 10615/56. Class 79(5) In a motor vehicle power steering arrangement the drag link terminates in drop arm and steering arm sockets 4, 19, the drop arm socket 4 being connected to a rod 5 movable longitudinally in a sleeve 11 on the link, such movement operating a valve mechanism 32 to initiate power assisted movement of the sleeve 11 and steering arm socket 19. As further shown the drop arm 1 is connected by a ball headed member 2 to the rod 5 entering the sleeve 11 which is connected by members 17, 18, 21 to the steering arm 22. Secured at 24 to a lug 23 on the sleeve 11 is a piston rod 25, the piston 26 being arranged in a double acting hydraulic cylinder 27. Axially slidable on the rod 5 is a sleeve 9 threaded at 14 into the sleeve 11 and locked in position by a nut 10. Also axially slidable on the rod 5 is a spring 15 abutting washers 10a, 10b engaging shoulders in the sleeves 9, 11, compression of the spring 15 being limited by a sleeve 16. Secured to the end of the rod 5 are members 6, 7 adapted on axial movement of the rod initiated by manual steering movement to rotate a three armed member 30 pivoted at 31 to casing for the valve mechanism 32. Each arm 30c of the member 30 bears against a piston 36 having a hollow stem 38 bearing against a spring-loaded closure member 49 for a passage 43 between a cylinder space 34 or 35 and a space 42. The space 42 is connected by a port 56 to the output of a pump (not shown) and the spaces 34, 35 are connected by ports 54, 55 to pipes 28, 29 leading to the cylinder 27. In operation, manual steering movement causes relative movement between the rod 5 and sleeve 11, stressing the spring 15 and rotating the member 30, whereby one of the members 49 is depressed against the action of its spring 52. Thus the pump output is connected to one of the cylinder spaces 34, 35 and thus to one end of the cylinder 27. Trapped fluid pressure in the other end of the cylinder 27 causes the appropriate piston 36 to be raised whereby that end of the cylinder is connected through the hollow stem 38 and apertures 41 in the piston 36 to exhaust. The sleeve 16 functions to limit relative movement between the rod 5 and sleeve 11 whereby mechanical steering can take place on failure of the hydraulic system.
Patent GB-261263-A (GB)
Title: An improved portable drive for sewing and like machines
IPC: D05B77/00
Filed: 1926-04-22
Abstract: 261,263. Weigl, O. April 22, 1926. Driving.- The treadle 5 and flywheel 8 of a domestic darning or embroidery machine are housed in a small box A in which the machine B also is contained when not in use. The flywheel drives a pulley 10 to which the sewing-machine is connected when in use by a belt or flexible shafting. The sewing-machine is placed on a table &c. above the box, or may be supported by an outer part II of the box, as indicated in Fig. 4. The outer portion comprises side walls 7<1>, 7<1> and a lid 12 and when it is to be used as a support is turned through 180‹ and held by projecting pieces 17.
Patent GB-1041422-A (GB)
Title: Process for the production of pipes from polyester moulding materials by the centrifugal process
IPC: B29C41/04
Filed: 1964-03-13
Abstract: 1,041,422. Pipes. FARBENFABRIKEN BAYER A.G. March 13, 1964 [March 28, 1963], No. 10685/64. Heading F2P. [Also in Division B5] In a process for making pipes by centrifugally moulding a flow-able material comprising a polyester, acting as a binding agent, and mineral filler, the material is centrifuged such that it divides out into two layers, the outer layer being filler-rich and having at most 10% by weight of binding agent and the inner layer being filler-free. The inner layer is subsequently removed from the mould and the outer layer cured. Suitable binding agents are solutions of unsaturated polyesters in. e.g. styrene, which have a viscosity between about 20 and about 1000 centipoises and the mineral fillers, such as sand, are chosen according to particle size which may vary from 0À05 to 30 mm. In addition, catalysts may be added, especially peroxides such as benzoyl peroxide, and for cold hardening, accelerators such as dimethyl aniline.
Patent GB-943923-A (GB)
Title: Improvements in or relating to methods for detecting and locating leaks in gas-carrying pipelines
IPC: G01M3/22
Filed: 1960-03-25
Abstract: 943,923. Detecting leaks by means of radio-activity. CONTINENTAL OIL CO. March 25, 1960 [May 11, 19591, No. 10723/60. Heading G1A. In a method of detecting leaks from a buried gas pipe-line a radio-active liquid slug 18 is inserted between pigs 16 and 17 which are propelled along the line by gas under pressure and a further, following, pig 23 incorporates radio-activity detecting and recording means 24, see also Fig. 3 (not shown). To flush the line of radio-activity, pig 19 is included, liquid slugs 21, 22 being free from radio-activity. Radio-active markers as described in Specification 943, 922 may be provided. Each pig has end cups 26 of hard rubber to form seals by means of expansion springs 27.
Patent GB-1391257-A (GB)
Title: Balancing of wheel/tyre assemblies
IPC: F16F15/32
Filed: 1971-04-22
Abstract: 1391257 Measuring rotary unbalance DUNLOP Ltd 17 April 1972 [22 April 1971] 10754/71 Heading G1N To compensate for the unbalance of a wheel and tyre assembly T Fig.1, the movement K about a horizontal axis X (kinetic unbalance) and the movement D about a vertical axis Y (dynamic unbalance) are measured electrically, a known proportion of the correction weight is added at the outer flange of the wheel and the measurements repeated. A comparison of the changes in the dynamic and kinetic unbalances enables the total correction weight to remove kinetic unbalance and its distribution between the inner and outer flanges to remove dynamic unbalance to be determined. These may be calculated, using moment equations involving the lengths a, b and w, or an approximate solution may be used, based on the comparison of the unbalance changes, depending on whether the dynamic unbalance change is equal to, greater or smaller than half the kinetic unbalance change, or changes sign. The angular position of the unbalance is determined stroboscopically.
Patent GB-103444-A (GB)
Title: Improvements in and relating to the Disposition of and Transmission of Power from Groups of Internal Combustion Engines.
IPC: B63H23/00
Filed: 1916-07-31
Abstract: 103,444. Boothroyd, A. W., and Mumford, Ltd., A. G. July 31, 1916. Drawings to Specification. Compartmenfs. -Internal-combustion engines are arranged in groups of four or multiples thereof and provided with means for putting any number of engines in or out of operation. Each group of engines is housed in a separate watertight compartment, the control of the clutches and of the reversing gear being arranged above the waterline.
Patent GB-668454-A (GB)
Title: Improvements in and relating to mechanism for adjusting shaft end play
IPC: H02K5/167
Filed: 1950-05-02
Abstract: 668,454. Bearings. BRITISH THOMSONHOUSTON CO., Ltd. May 2, 1950 [May 13, 1949], No. 10801/50. Class 12 (i). [Also in Group XXV] The invention comprises a method of adjustably limiting the axial end play of rotatable shafts. The rotatable shaft 4 (of a dynamoelectric machine) in a bearing 3, is lubricated by a wick 7, the cup-shaped member 9 forming a lubricant reservoir 10. The shoulder 11, with lubricant throwing grooves upon it and with the thrust and lubricant throwing washers 13, 15, 16 abutting the end 14 of the bearing, prevents the shaft 4 from moving axially to the left. Thrust washers 17, 17a abut the end 18 of the bearing and, by means of a washer 23 and a circlip 22 of soft spring steel having arcuate crimps 28 engaging diametrically opposite grooves 19 in the shaft 4, prevent axial movement towards the right. The eyelet member 21 (Fig. 2) comprises a washer 23 and an axially split retainer spring or circlip 22 in the form of two diametrically opposite cylindrical segments 24, 25 interconnected by elongated spring portions 26, 27. The circlip 22 is positioned on the shaft 4 so as to give the desired axial end play, parts 28 of the segments 24, 25 then being crimped into engagement with the grooves 19. In a modification (Fig. 4) a circlip 30 is shown having an elongaged portion 31 to provide the necessary spring length, and a portion 32 diametrically opposite is made in the form of a clasp to bias the segments 33 against the shaft. Portions 34 are crimped into the grooves 19. In a further modification (Fig. 5) the spring sections 35 are corrugated. The circlip 22 may readily be taken off and put back upon the shaft 4 after the crimps 28 have been formed. The invention may also be applied to a multiple bearing structure. Specification 658,830 is referred to.
Patent GB-1486726-A (GB)
Title: Method and apparatus for avoiding defects in the reproduction of pictorial originals
IPC: H04N1/387
Filed: 1975-03-14
Abstract: 1486726 Facsimile systems DR-ING RUDOLF HELL GmbH 14 March 1975 [19 March 1974] 10839/75 Heading H4F The system employs a source of first clock pulses which are derived from, and precisely related to, the motion during scanning of a surface bearing an image to be reproduced. Video signals representing the scanned image are converted to digital form and the digital signals are stored, both the conversion and the read-in to the store being controlled by the clock pulses. Second clock pulses, which are derived from, and directly related to, the motion of a surface on which the image is to be reproduced, control the reading of the digital signals from the store, these signals being converted to analog form prior to application to the reproducing scan head or being fed direct to the head. The reproduced image is a half-tone picture. In the embodiments disclosed in detail the surfaces are drum surfaces, though reference is made to flat-bed arrangements. As indicated in Fig. 1, each drum has a timing wheel 13, 30 mounted on it. The number of timing marks on the wheel is equal to the number of half-tone cells in one circumferential line of scan. The timing marks are sensed photo-electrically or otherwise, to provide clock pulses which control an analog-digital converter 8, which receives video signals from scan head 6, and control read in to store 12. Sensor 31 provides second clock signals controlling read-out from the store to digital-analog converter 24. The analog signals pass to scan head 25 which may include an engraving tool, a laser, or an electron beam generator. Scan head 25 also receives the second clock pulses which define circumferential positions of the half-tone cells. To obtain changes of scale the clock pulses from the sensors 14, 31 may be fed to multipliers or dividers, which may be adjustable (Fig. 3, not shown). If more than one reproducing drum is used each provides its own clock pulses and is associated with a respective store and digital-analog converter (Fig. 5, not shown). In a further arrangement, Fig. 6, two images 5 are mounted on the scanning drum 1 and respective video signals pass to respective stores 12, 12<SP>1</SP> via analog-digital converters 8, 8<SP>1</SP>. A second drum 22 carries a mask 123 and has a timing wheel 127. The mask-representing video signals are digitized (125) and stored (126). The clock pulses generated by timing mark sensor 31 control read-out of the image video signals, signals from one or other of the stores 12, 12<SP>1</SP> being passed to reproducing scan head 25 via switch 121 which is controlled by the mask signals read from store 126 under the control of the clock pulses from sensor 31.
Patent GB-652795-A (GB)
Title: Improvements in instruments for measuring linear dimensions
IPC: G01B3/44
Filed: 1948-04-20
Abstract: 652,795. Indicating-apparatus; dial gauges. WESTERBERG, E. B. April 20, 1948, No. 10854. [Classes 106 (ii) and 106 (iv)] A linear-dimension measuring instrument comprising a pointer radially fast with a cylinder to which are made fast the one ends of three bands, of which one is trained about the cylinder in the opposite direction to the other two and has its other end fast with a spring-biassed measuring device, is characterised by the other end of a second band being anchored to a tension spring, and by the other end of the third band being anchored to a cam on to which the cylinder is held in rolling contact by the one and second bands, the curvature of the cam being such that the angles, made with the tangent at the point of rolling contact by the said one and second bands, remain constant and equal throughout rolling of the cylinder. In the embodiment described, means for transmitting movement from a work-contacting plunger 6 to a pointer 17 comprises bands 3, 4 wrapped in opposite directions round a cylinder 1 and secured thereto on a common generatrix 2, their other ends being secured to the plunger 6 and to a spring 9 fixed to an arm 10. Another pair of bands 51, 5<SP>2</SP> is similarly attached to the cylinder 1, wrapped in the same direction as the band 4 and secured to one end of a cam 16 upon which the cylinder 1 rolls in response to movement of the plunger 6. To vary the transmission ratio, the cam 16, which is fixed to a spindle 15, is turned through an angle and consequently turns the arm 10 through twice the angle by means of gears 14, 13, 11, thus maintaining the same tension in the system. The tension may be varied by adjusting the spring 7. The cam 16 is so curved that the movement of the pointer 17 over a scale 18 is directly proportional to movements of the plunger 6.
Patent GB-827958-A (GB)
Title: Means for heat treating articles by high frequency induction heating
Inventor: FROST LEONARD FRANK
IPC: H05B6/06
Filed: 1955-04-15
Abstract: 827,958. Heating by induction. DELAPENA & SON Ltd. April 13, 1956 [April 15, 1955], No. 10964/55. Class 39(3) High frequency induction heating apparatus as described in Specification. 10961/56 (pending) has means to enable the degree of heat induced on different portions of a surface of a workpiece to be automatically varied during the heating process to control the heat pattern produced on such surface; the variation is produced by changing the speed at which the workpiece, e.g. a gearwheel, travels past the inductor and by changing the power of the high frequency current supplied to the inductor. In the hydraulic system shown in Fig. 4. pressure fluid flowing to the top of a cylinder 16 for moving a gearwheel being heat treated passes via a rate-controlling valve 70 which is set to cause a mounting shaft carrying the gearwheel initially to travel relatively fast downwardly until the inductor enters a tooth space, i.e. during the initial stage of the heating operation. A trip bar 33 on a crosshead 17 then causes the pressure fluid to be diverted from the valve 70 to a valve 73 which slows the flow of fluid to the cylinder 16, the speed of the mounting shaft and gearwheel past the inductor thus being reduced during heating of the sides of the tooth space intermediate its ends. At the end of the down-stroke a unit switch 43 is actuated by a trip dog 45 which causes the pressure fluid to be cut off from the upper end of the cylinder and passed to the lower end of the cylinder, the gearwheel being moved upward ready for the next cycle of movement. At the commencement of the downward movement of the gearwheel; a trip bar 34 on the crosshead 17 closes a limit switch 39 to energize the inductor, series resistances being connected in the circuit for supplying the inductor to reduce the power available. To obtain an increased heating effect before or after the inductor has entered a tooth space, a switch 40 controlled by a trip bar 35 causes the series power reducing resistances to be short circuited. To avoid burning the upper edges of the tooth space as the inductor leaves the space, the resistances may automatically be re-connected in circuit.
Patent GB-634082-A (GB)
Title: Improvements in signalling arrangements for railways
IPC: B61L3/18
Filed: 1946-04-10
Abstract: 634,082. Railway signalling. SOC. AUXILIAIRE D'ETUDES ELECTROTECHNIQUES. April 10, 1946, Nos. 11042 and 11043. Convention dates, April 11, 1945, and Feb. 15, 1946. [Class 105] Signals are given in the cab of a locomotive on approach to an ahead train or to a wayside point such as a level crossing or a location where the points are not correctly set, by means of a watt-meter type of relay 5-10 in a circuit comprising a generator 3 driven from the locomotive wheels 9 and feeding a wire 2 extending along the track to form with the rails 1 acting as return a circuit which is bridged by the presence of a train ahead or by contacts being closed due to the points not being correctly set. The cab signal 23 is thus operated in dependence on the square of the speed and the driver is therefore given the necessary braking interval to bring the train to a stop. The trackside wire 2 is sectionalized but the sections are connected up by means of low impedance relays 13 to a length depending on the generator voltage since additional sections will be connected up until the length and impedance is such that the next low impedance relay does not receive sufficient current to operate. The locomotive generator is thus able to give a signal at the wayside point a constant time before the arrival of the train. The sections 2 of the trackside wire are connected up by the armature 11 of a relay 19 which is maintained energized from a local supply at terminals 17 by a circuit over contacts 20, 21 denoting the points correctly set and locked, armature 15 (maintained energized by a winding 18 but initially picked up by the low impedance relay 13 when armature 11 of relay 19 was on its back contact), and a normally closed treadle contact 22. The generator voltage is proportioned to the engine speed so that succeeding sections 2 of the trackside wire will be connected up until the total impedance is such that the current in the relay 13 is below the required operating value. If the locomotive generator provides alternating current the trackside wire circuit is arranged to have reactance predominating and a wattmeter type relay actuated by the reactive power is employed.