baber/WOPTO huggingface dataset:
Patent GB-1489857-A (GB)
Title: Centrifuge
IPC: B04B7/18
Filed: 1976-06-17
Abstract: 1489857 Centrifuge BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT 17 June 1976 [19 June 1975] 25096/76 Heading B1D A centrifuge comprises a rotatable centrifuge basket 1 having a vertical axis of rotation, the basket tapering outwardly in an upwards direction, and a filtering screen 2 supported in the basket via roughened surface areas 11 thereby preventing in use movement of the screen relative to the basket. A mesh support (Fig. 6) may be provided for the screen having points of contact 9 roughened. The roughened surface areas may be on the outer side of the screen, the inner side of the basket, or both, or both sides of the mesh support 3. The rough areas may be provided by metal finishing e.g. electroplating, sand blasting or grinding or by the provision of friction linings of metal or plastics material as cladding on the basket 1 or the outside of the screen 2 on the support. The areas on the inner surface of the basket may be on curved or straight upwardly extending bars, the spaces 12 between which being filled with a supporting mesh.
Patent GB-251060-A (GB)
Abstract: 251,060. BarnabÚ, L. V. March 11. 1925. Heating by electricity.-Apparatus for producing vapours for disinfecting and like purposes comprises a metal casing A divided by a horizontal partition B into two compartments, an upper vapourizing compartment C, and a lower compartment containing a removable electric heating element F comprising an electric resistance wound on an insulating support and enclosed first in an insulating sheath, e.g. of mica, and then in a metal cover which is detachably secured to the underside of the partition B. The cover of the heating element F is held in contact with the partition B by a metal plate G passing over one or more pairs of screws G', fixed in the partition B, and secured by nuts. The plate G carries two screwed pins- H passing through holes in a detachable bottom plate J which is then secured by nuts H<1>. The lcwer compartment of the casing A, or its bottom plate J, or both, may be lined with asbestos or other heat insulating medium. The circuit leads, from the terminals F<1>, F<2> on the heating element F, pass out through holes K in the bottom plate J.
Patent GB-921745-A (GB)
Title: A combined liquid fuel stove and water heater
IPC: F24D3/08
Filed: 1959-07-22
Abstract: 921,745. Stoves; water heaters. WING- KEUNG POON. July 22, 1959, No. 25154/59. Class 126. [Also in Group XIII] A combined liquid fuel fired stove and water heater comprises a water jacket 19 or an equivalent such as a coiled tube (not shown) surrounding the burner 1 of the stove, which as shown is the stove disclosed in Specification 811,516, and connected by inlet and outlet pipes 22, 23 respectively with a storage tank 24 which may be connected to another water heater by pipes 22a, 23a. Articles to be heated may be placed on a plate 3. In another embodiment, the pipes 22, 23 are replaced by a single large pipe through the lower part of which water flows from the tank to the jacket and through the upper part of which heated water returns to the tank 24.
Patent GB-322007-A (GB)
Title: Improvements relating to photographic process printing
IPC: G03F7/14
Filed: 1928-09-03
Abstract: 322,007. Weck, H., Weck, T., and Buggenhoudt, G. van. Sept. 3, 1928. Photo-mechanical printing-surfaces.-Printing plates are prepared by superposing a layer of casein-gelatin on a layer of chrome-gelatin and exposing the sensitized surface through a screened negative. The plate e.g. of zinc, is coated with a layer containing gelatin, chromealum, potassium silicate and water. Over this is applied a layer consisting of casein, hard gelatin and water. The plate is sensitized with ammonium bichromate and exposed for 2 to 4 minutes to arc lamps of 4000 candle power. The plate is then washed, first with water and then with glycerine. For printing it is moistened with glycerine and water, leather rollers being used for inking and hard gelatin rollers for drying. It is claimed that a screen negative with the white areas free from black dots and the black areas free from white dots may be used.
Patent GB-283631-A (GB)
Title: Improvements in automatic switches
IPC: H01H35/42
Filed: 1926-10-11
Abstract: 283,631. Poole, H. J. Oct. 11, 1926. Thermal switches; switches, actuating.-Relates to switches which open and/or close a circuit on the establishment of a certain temperature, or of a certain degree of humidity, or which act as a safeguard against overloads in a circuit, or as automatic time switches for intermittent lighting, or as a. fire alarm to operate directly or through a relay an alarm or to turn on sprays. As applied to a switch for breaking contact when a certain degree of humidity is attained, Fig. 1, the control element f is a multiple fibre band, e.g. horsehair, one end of which is anchored to an adjustable lever g whereas the other is pivotally attached to a lever e. The contacts b, c are normally closed by the pressure of the lever on a spring a which is oppositely flexed at two different points. Increased humidity shortens the band so that the increased pressure on the spring causes it to change its flexure and rapidly break circuit. The switch may control a heating, cooling. or humidifying device, or a. valve controlling the admission of heated, cooled, moist, or dry air to a room. In Fig. 2 (not shown) the control element is a zinc tube containing a heating element which, with the switch, is adapted to control a lamp for intermittent lighting. Bimetallic strips are also referred to as operating means.
Patent GB-598177-A (GB)
Title: Improvements in or relating to process for the production of pantothenic acid
IPC: C12P25/00
Filed: 1944-12-19
Abstract: Pantothenic acid is obtained by subjecting fermentable molasses or malted starch mash, e.g. malted maize starch, to the action of an active culture of Aerobacter aerogenes whilst maintaining the mash in a state of constant aeration preferably at temperatures between 25 DEG  and 37 DEG  C.  The pH of the mash is adjusted to a value between 5.6 to 8.0 prior to inoculation with the active culture of bacteria.  Nitrogenous and mineral materials, e.g. potassium acid phosphate and urea, may be incorporated in the mash. Aeration rates of from about 20 to 130 cubic feet per hour per square foot of mash surface can be utilized and may be effected by shaking stirring or spraying the mash in an atmosphere of sterile air.  Details are given of each of these methods of aeration.ALSO:Active strains of Aerobacter aerogenes to be used in fermenting molasses or malted starch mash are obtained by placing soil in sterile flasks containing sterile water, adding malted corn mashes in the presence of potassium dihydrogen phosphate, potassium hydrogen phosphate and urea as nutrients.
Patent GB-721856-A (GB)
Title: Photo-electrically controlled apparatus for producing alternating currents in synchronism with rotation of a member
IPC: G01M1/22
Filed: 1952-10-11
Abstract: 721,856. Photo-electric control system. AVERY, Ltd., W. & T. (Schenck Maschinenfabrik Ges., C.). Oct. 11, 1952, No. 25519/52. Class 40 (3). To generate an alternating voltage synchronised with the rotation of a piece of machinery, a photo-electric cell receives a light pulse from an annular member coupled to the rotating machinery and having a zone of different reflectivity to the rest of the member and converts it into an electric pulse to drive a synchronous motor which in turn drives an alternating current generator. As described, the invention is applicable to'the watt-meter method of testing a rotating body for unbalance in which a vibration pick-up member feeds the voltage coil of a wattmeter, the current coil of which is fed with a reference alternating voltage. As shown, disc-shaped member 1 coupled to the rotating body under test has a dark portion 2. Light from a source 3 is reflected from the edge of the disc to a photo-electric cell 4 which produces a pulse each time the darkened portion is illuminated. The output pulses are amplified at 5 and used to drive a synchronous motor 6 which drives alternating current generators 7, 8. A universal motor 10 may be used for supplying the bulk of the driving power to the alternating current generators so that motor 6 need only supply synchronizing power. Motor 10 is controlled through a starting and regulating rheostat 11. A rotating disc 12 bearing a mark illuminated by a lamp 14 fed from the output of amplifier 5 may act as a synchronizing stroboscope. The A.C. generator may consist of a rotating wiper arm wiping over tappings of a circular resistor fed at diametral points, Fig. 6 (not shown), or of a two pole permanent magnet inducing current in coils.
Patent GB-1033143-A (GB)
Title: Improvements in or relating to the production of spheroids
Inventor: KENNEDY PETER
IPC: B01J2/14
Filed: 1962-07-03
Abstract: Granules of fissile or fertile material or mixtures thereof are placed in a container to which a gyratory vibration is applied so as to form spheroids, and the formed spheroids are subsequently enlarged by addition of further quantities of said material.  Initial addition of the further quantity is at a lower rate, e.g. 25 g. per 15 minutes until spheroids are enlarged to 400 microns, than subsequent addition, e.g. 25 g. per minute, so that the added material causes enlargement rather than fresh spheroid formation. The added material is preferably powder of particle size smaller than the granules.  The gyratory vibration is interrupted at e.g. hourly intervals to permit removal of undersized spheroids by sieving, and these may be reground for further addition as powder.  A mixture of 500 g. uranium dioxide, 67 g. carbon black and 0.25% aluminium stearate is ball-milled for 16 hours to form granules which are spheroidized in a polyethylene bowl secured to a sieve-shaker imparting reciprocating motion in a vertical plane and oscillatory angular motion in a horizontal plane. Addition of powder which may be that obtained from the ball milled material by passage through a 100 mesh sieve, or which may be unsieved ball-milled material, causes enlargement from 230 microns up to 1 mm.  The spheroids are reaction-sintered in vacuo to remove carbon monoxide and the dense non-porous spheroids of uranium carbide formed may be coated with silicon carbide or pyrolytic carbon, dispersed in a matrix of silicon carbide or carbon and the matrix formed into a nuclear fuel body.  The container may be smooth or its internal surface may be fine abrasive.  Ball milled or granulated uranium dioxide may also be used as the starting material and the formed spheroids coated and dispersed in beryllia.  The powder to be added is advantageously first subjected to the action of a fluid energy or jet mill.
Patent GB-630402-A (GB)
Title: Improvements in or relating to lens grinding apparatus
IPC: B24B13/005
Filed: 1947-09-19
Abstract: 630,402. Grinding lenses. LONDON OPTICAL CO., Ltd., and BEARDON, E. W. Sept. 19, 1947, No. 25582. [Class 60] [Also in Group XXII] Lens grinding equipment consists of an attachment in the form of a lens holder comprising a lenslocating ring 1, a lens support plate 7 within the locating ring, and a universal joint 3, 4 between the support plate and locating ring. A lens blank 12, the underside of which has been ground, is stuck by pitch 13 on the support plate 7, the pitch being broken away at appropriate places to allow locator pins 11 to contact the ground surface of the blank. The pins 11 are adjustable for height and radial setting on the locating ring 1, which carries the socket 3, preferably split, for the universal joint and a clamping screw 2. The ball 4 of the universal joint has a tubular extension 6 provided with a clamping screw 10 for the support plate 7. A third clamping screw 15 secures the locating ring 1 in a mounting ring 14 which has a tapered bore 17 to fit a correspondingly shaped post on the machine table. After the blank has been attached to the support plate, the latter is clamped to the tubular extension 6 and the socket 3 is inserted into the locating ring 1 until all of the locator pins are in contact with the underside of the lens blank, the universal joint compensating for any malalignment of the lens in relation to the support plate. The complete assembly is now mounted on the machine. For spherical lenses, the locator pins may be replaced by rings or segments. Different types of support plate 7 may also be provided.
Patent GB-699158-A (GB)
Title: Bladed screw, more particularly for hydrometric flow meters
IPC: G01F1/10
Filed: 1951-11-01
Abstract: 699,158. Measuring flow of fluids. OTT, H., [trading as OTT, A. [Firm of]]. Nov. 1, 1951 [May 11, 1951], No. 25614/51. Class 97 (ii). [Also in Group XXVI] A bladed screw is characterized in that the angle #, showing the degree of concavity of the front surface of a blade, is between Œ 20 degrees with a blade overlap U equal to or greater than 90 per cent, and is between 0.9 (90 - U) degrees + 20 degrees and 0.9 (90 - U) degrees - 20 degrees with a degree of overlap U less than 90 degrees, the cone angle y of the edges of the blades against which liquid flows being in both cases between 120 degrees and 80 degrees. The overlap U is the percentage ratio of the projected area of blades 1, 2, in the axial direction to the total annular area between the external diameter of the screw and the diameter of its hub 3. If a straight line E 2 , inclined at an angle # to the perpendicular to the screw axis, is used as a blade face generator, the face is concave on its leading side. A curved generating line E3 may be used. The height of a closing cap 4 is not greater than its diameter, and preferably not greater than half this diameter.
Patent GB-634780-A (GB)
Title: Process for coating threads of textile materials
Inventor: LURIA CARLOS
IPC: D06M15/17
Filed: 1946-08-27
Abstract: A process for treating textile threads, e.g. sizing, stiffening, softening, comprises applying to the threads from a wick device a melted material which after application becomes immediately solid or very viscous, the material comprising one or more substances selected from drying or non-drying oils, fats, soaps, natural resins, gums, synthetic resins, glues and gelatines and which at normal temperatures is solid and very viscous.  The specified examples of the materials are (1) glycerine, glue or gelatine; (2) gum arabic, glycerine or glycol.  The heating of the material may be effected electrically and the temperature controlled thermostatically.  The threads may be made of artificial silk.  The dyeing of the threads with a fugitive dye may be carried out in conjunction with the application of the material.  The material may be removed by dipping the threads in hot water.  The Specification is open to inspection under Sect. 91 comprises also the use of waxes as sizing material. This subject-matter does not appear in the Specification as accepted.
Patent GB-624098-A (GB)
Title: Improvements relating to shaft seals
IPC: F01D11/04
Filed: 1946-08-27
Abstract: 624,098. Shaft seals. JENNINGS, H. W. K. (Sturtevant Co., B. F.). Aug. 27, 1946, No. 25655. [Class 122(v)] In an oil seal for a blower wheel shaft 10 supported by a bearing 12, 13 in a housing 14, 15, both ends of which make peripheral contact with oil seal shaft rings 16, 17, annular gas passages 35 in the housing ends adjacent the rings 16, 17 are connected by a longitudinal passage 24 to a conduit 26 leading to a point outside the housing. Inner portions 16a, 17a of the rings 16, 17 form the seal proper and are by-passed by air drawn through the passages 35, 22, 23, 24, 26 by the blower 11. When the bearing is located in the high pressure zone between the first and second stages of a multistage blower, oil is prevented from being blown from the seal by the ambient air by-passing the seal proper through the passages 35, 22, 23, 24, 26.
Patent GB-282920-A (GB)
Title: Improvements in, or relating to, the brakes of motor vehicles
IPC: B60T11/08
Filed: 1926-10-14
Abstract: 282,920. Prestwich, J. A. Oct. 14, 1926. Force - transmitting mechanism. - Brake mechanism for a vehicle ,comprises an actuating lever 20 pivoted to the chassis and having a lower extension 13 pivoted to a curved rocking-arm 15 connected to a brake rod and carrying a roller 16 adapted to coact with a fixed cam 17. This cam is provided with a step 18 ,and a curved face 19 so that the initial movement of the brake lever takes up the slack in the .brake rigging. The mechanism may be located at any intermediate point between the brake drums and hand.- actuating lever or foot-pedal or it may, as in Fig. 2, be located in the brake drum in which 27 is the actuating-lever connected to a brake rod 26, the, curved rocking-arm 15 being connected by a rod 29 to the brake cam-lever 30.
Patent GB-860804-A (GB)
Title: Improvements in or relating to the transmissions of vehicles provided with hydraulictorque converters or hydraulic couplings
IPC: F16D43/18
Filed: 1957-08-14
Abstract: 860,804. Friction clutches. REGIE NATIONALE DES USINES RENAULT. Aug. 14, 1957 [Aug. 20, 1956], No. 25677/57. Class 80 (2). To prevent idle drag in a motor car transmission having a fluid coupling or, as shown, a hydrodynamic torque converter A between an engine driven shaft 1 and a shaft 26 connected to a change-speed gear (not shown), a centrifugal friction clutch B which engages above idling speed is connected in series between the engine-driven shaft 1 and the impeller 23 of the torque converter &c. Fast on the engine shaft 1 is a drum 2 carrying a U-sectioned ring 5 through which pass pins 7 carrying masses 10. With the car engine idling, springs 13 tend to turn the masses 10 about the pins 7 so that friction linings 11 on the masses are held clear of the internal periphery of a drum 22 fast with the impeller 23. With increasing engine speed, centrifugal force acts upon the masses 10 to turn them about the pins 7 and engage the friction linings 11 with the drum 22 for transmission of torque. Friction ratchet shoes 16 are pivoted on pins 17 within the U-shaped rings 5 and are biased lightly into engagement with the drum 22 by springs 18. The torque transmitted thereby is negligible when the engine drives the impeller 23, but when the impeller tends to drive the engine shaft 1, as for a towed start, the shoes 16 are wedged by the torque transmitted against the inner periphery of the drum 22. To by-pass the torque converter A., oil under pressure is admitted to a cylinder 37 to bias a piston 36 leftwards of Fig. 1 and engage a clutch disc 34 carried by a shaft 35.
Patent GB-259986-A (GB)
Title: Improvements in generating systems for high tension electric currents
IPC: H02K16/00
Filed: 1926-10-15
Abstract: 259,986. Thurneyssen, G. T. Oct. 16, 1925, [Convention date]. Systems depending on the use of two or more machines.-Extra high tension continuous current is generated by a number of generating sets connected in series, each set comprising a prime mover such as a combustion engine and being highly insulated from the earth, e.g. by mounting the platform upon insulating pillars or suspending it from insulating chains. Materials required, e.g. air and oil, when of an insulating character, may be supplied through tubes of insulating material or through the platform supports or carried upon the platform.
Patent GB-1209721-A (GB)
Title: Automobile body with detachable roof section
IPC: B60J7/10
Filed: 1969-05-21
Abstract: 1,209,721. Detachable roof. DR.-ING h.c.F. PORSCHE K.G. 21 May, 1969 [31 May, 1968], No. 25818/69. Heading B7B. The forward edge of a detachable roof portion 8 is formed with a groove 19 accommodating a sealing strip 20 which engages over a ridge 18 spot welded to the windshield header 3 sealing pressure being maintained by the toggle links 23 operated by the handles 25. The rear edge of the roof 8 is retained against the upper face of a roll yoke by means of a resilient vertically arranged screw clamps.
Patent GB-488336-A (GB)
Title: Improvements in valveless four-stroke cycle internal combustion engines
IPC: F02B75/26
Filed: 1937-09-24
Abstract: 488,336. Four-stroke-cycle engines. GRIS, R. Sept. 24, 1937, No. 25987. Convention date, Nov. 4, 1936. [Class 7 (ii)] Cylinders 10, tangential to a circle concentric with the central shaft 1, are mounted on a rotatable frame 3. Gear wheels 14 are combined with the flywheels of individual crankshafts and are in engagement with internally or externally toothed wheels in an outer frame 2. Truly-plane surfaces on the two frames work over each other, ribs and grooves 7 and spring-pressed rings being however provided as gas baffles. An elongated port 20 in each cylinder head is in register with an opening 21 in the face of the frame 3, and the opening 21 successively registers with exhaust and admission ports and one or more sparking plugs or injectors in the face of the frame 2.
Patent GB-1178647-A (GB)
Title: Improvements in or relating to Electrical Switches
IPC: B60Q1/14
Filed: 1968-05-30
Abstract: 1,178,647. Mechanical switches. WESTFALISCHE METAL INDUSTRIE K.G. HUECK & CO. 30 May, 1968 [7 June, 1967], No. 26033/68. Heading H1N. A pivoted tubular arm 1 for actuating a switch 14 in a motor vehicle carries an axially displaceable handle 7 connected by a forcetransmitting cable 13 to close auxiliary switch contacts 17, 18 fixedly mounted in the body of the switch 14. The handle 7 has a threaded end cap 10 which is yieldingly urged by spring 5 to hold a step 8 of the handle 7 against a flanged sleeve 4 fixed to the end of the arm 1. The cable 13 is located in the end cap 10 by a plate 11 engaging an enlarged end 12 of the cable 13. Movement of the cable 13 is transmitted to a spring contact 17 through an enlarged end 15 slidable in a bore 16 of a pivot 20 for the arm 1.
Patent GB-1170254-A (GB)
Title: Improvements in Stairs.
Inventor: MAZZIOLI JOSEPH
IPC: E04F11/09
Filed: 1966-06-10
Abstract: 1,170,254. Stair treads. ALPHA MOSAIC & TERRAZZO CO. Ltd. 27 July, 1967 [10 June, 1966], No. 26036/66. Heading E1B. A stairway comprises integral treads 11 and risers 10 cast from terazzo material and supported in a case S, a knurled brass strip 12 being keyed to the front of the tread (or the top of the riser) and a plate of carborundum 13 being keyed to the tread at its junction with the strip. The anti slip plate may terminate short of the sides of the tread.
Patent GB-1392736-A (GB)
Title: Manufacture of heating panes
IPC: H05B3/86
Filed: 1972-06-05
Abstract: 1392736 Incorporating inserts into sheets SAINT-GOBAIN INDUSTRIES 5 June 1972 [4 June 1971] 26117/72 Headings B5A and B5N [Also in Division H5] In a process for incorporating parallel wires 11 into a thermoplastics sheet, e.g. of polyvinylbutyral, which is to be used in an electrically heated laminated pane, the sheet is moved across a table 3b by rollers 4 and the wires 11 are pressed into the heat softened sheet by a roller 20. The sheet can be softened either by heating the roller 20 or placing a heater upstream of the roller, or by heating the wires, e.g. by induction. The roller 20 has a grooved surface so that the wires are only fixed at points along their lengths. A wire spacing member 13 is reciprocated across the sheet by an eccentric 14 to give the wires a curved formation. Metal conductors 6, intended to serve as collectors, are placed on the sheet upstream of the roller 20. The back up roller 25 is cooled.
Patent GB-242431-A (GB)
Title: Improvements in means for operating the valve or valves of a hydraulic press
IPC: B30B15/16
Filed: 1924-11-03
Abstract: 242,431. Lancaster & Tonge, Ltd., Butterworth, J., and Smith, A. Nov. 3, 1924. Working valves.-In order that the piston of a hydraulic press may reciprocate continuously, the valve A is actuated through rods D from a trip gear, comprising spring-controlled plungers E mounted on a slidable bar G operated from the piston. At each end of the stroke, a plunger engages a rod D and catch H, the spring K being compressed until a roller or wedge L trips the catch.