baber/WOPTO huggingface dataset:
Patent GB-1502877-A (GB)
Title: Method of producing vacuum in a receptacle and a vacuum pump for effecting same
IPC: F04B37/08
Filed: 1975-04-29
Abstract: 1502877 Vacuum production LENINGRAD POLITEKHNICHE INST IMENI MI KALININA 29 April 1975 [30 April 1974] 17800/75 Heading F1N A vacuum is produced in a receptacle by a pump comprising a chamber 8 divided into two spaces 11, 12, the space 12 being connected to the receptacle by a flange 9 and the space 11 by a tube 21 to a preliminary evacuation system, the latter being operable to withdraw gas from the receptacle through a liquid or solid gas mass 15  disposed in a passage 14 connecting the two spaces, the final vacuum being produced by the gas mass 15 acting as cryo-condensation and cryosorption surfaces. The chamber spaces 11, 12 are enclosed in a trough 16 filled with liquid or solid helium, hydrogen or nitrogen for refrigerating the liquid or solid gas mass 15 which may be nitrogen, carbon dioxide or air. To protect the pump from external heat radiation the trough 16 is enclosed in a liquid nitrogen filled vessel 24 separated from the trough 16 and a casing by gaps evacuable by e.g. adsorbent such as activated charcoal, Figs. 3, 4 and 5 (not shown). An annular baffle 10 separates the spaces 11, 12 and may extend between two adjacent annular perforated ribs (99) of a plurality of coaxial ribs fixed to the bottom 15 of the chamber 8 and extending through the liquid or solid gas mass. A herringbone cryopanel 29 cooled by the liquid nitrogen prevents heat radiation from the receptacle into the chamber 8. In operation of the pump, liquid nitrogen is first poured into the chamber 8 through a tube 20 while leaving a valved outlet from the receptacle open, whereby the latter is flushed out by nitrogen vapour. Once the passage 14 is filled with liquid nitrogen, the tube 20 is sealed, the valve is closed and a fore pump connected to the tube 21 is operated. After a preliminary vacuum is reached in the receptacle liquid nitrogen is poured into the vessel 24 through a tube 25 followed by filling of the trough 16 with liquid helium through a tube 22. By removing nitrogen vapour from the vessel 24 with the tube 25 closed, the temperature of the liquid therein falls and the liquid nitrogen in the chamber 8 begins to solidify. However since the level of liquid nitrogen in the space 12 has by this time fallen to the edge of the baffle 10, due to the pressure differential, and since gas continues to bubble through the liquid nitrogen, it solidifies into a porous mass. Accordingly some gases pass freely through the solidified mass while others sublime or condense thereon or therein. A number of other modes of operation are described using the various modified pumps described.
Patent GB-803857-A (GB)
Title: Rotary valve
IPC: B65G53/46
Filed: 1957-06-05
Abstract: 803,857. Pneumatic conveyers. CABOT, Inc., G. L. June 5, 1957 [June 8, 1956], No. 17831/57. Class 78 (1). A rotary valve for transferring material from one space to another without appreciable leakage of gas comprises a casing having spring-loaded end walls 12, 14 and a rotor 34, the impervious vanes of which are tipped with resilient cylinders 36. These cylinders are slotted longitudinally and are made from relatively soft resilient material such as aluminium or that known under the Registered Trade Mark " Teflon." The rotor shaft 28 is mounted in bearings 24, 26 in fixed members 20, 22.
Patent GB-1518229-A (GB)
Title: Process for the production of polychloroprene
IPC: B01F7/00
Filed: 1976-05-03
Abstract: 1518229 Cylindrical reactor: chloroprene emulsion polymerization BAYER AG 3 May 1976 [10 May 1975] 17923/76 Heading C3P Chloroprene is polymerized in aqueous emulsion in a closed, vertical cylindrical reactor equipped in its lower third with one or more propeller or impeller stirrers 11 comprising 2-5 blades 5 on a shaft, which shaft is parallel to, or inclined at an angle of up to 45 degrees with respect to, the reactor's vertical axis; the reactor also has a smooth internal surface, rounded internal corners, a heating/cooling jacket and no baffles.
Patent GB-916620-A (GB)
Title: Air-cooled condenser for the head product of a distilling or rectifying column
IPC: B01D5/00
Filed: 1960-05-20
Abstract: An air-cooled condenser for a distillation column comprises condenser-elements 8, 8a, made up of rows of upright tubes provided with fins, the condenser-elements being arranged to form at least one polygonal jacket (there are two hexagonal jackets in the embodiment <PICT:0916620/III/1> shown) surrounding the head of the column with lateral clearance, and fans 21 above the head of the column to cause cooling air to flow between the tubes.  In the embodiment shown, there are four fans 21 accommodated in apertures 20 in the end-plate 19 of hexagonal lining 18, which is provided, where facing condenser-elements 8a, with apertures corresponding with the surface area of the elements.  The fans are driven by variable-speed motors 24, and generally draw cooling-air through the condenser-jackets into the space between the inner jacket and the head of the distillation column, and then blow it out through the end-plate 19.  But when the atmospheric temperature is very low and readilysolidifiable products are being distilled, it is advisable to reverse the direction of flow of the cooling-air so that it is preheated on the outer wall of the column before it brushes over the condenser tubes.  The hot vapours pass out of head of the column through connection-pieces 3, which are arranged at uniform distances apart around the periphery of the column-head.  The vapours then flow, through annular conduit 5 and connection-pieces 6, into the tubes of the condenser.  The condensate and inert gases flow into annular conduit 11, which is connected to reflux and withdrawal conduits.  Spraying nozzles 25, for moistening the cooling-air, are arranged between the two condenser-jackets; these nozzles face into the flow of the cooling-air current, and reduce the temperature of the air after it has flowed through the first jacket.
Patent GB-201161-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02M1/00
Filed: 1923-07-11
Abstract: 201,161. Bernard, P., Husny, K., and, Boucher, M. July 21, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. P l a t e s , securing pipes to.-To enable a nozzle 5, Fig. 2, to be positioned inside a tank from the outside, the base 9 of the nozzle is provided with a radial slot having chamfered edges 14, Fig. 4, so that, by passing the slot over the edge of the hole 13 in the wall of the tank and rotating the nozzle, the base may be passed through the hole.
Patent GB-494916-A (GB)
Title: Improvements in or relating to motor-vehicle light projector apparatus
IPC: B60Q1/076
Filed: 1937-06-29
Abstract: 494,916. Ratchet gearing. BORMANN, O. June 29, 1937, No. 18088. Convention date, June 30, 1936. [Class 80 (iii)] [Also in Group XI] In a pawl-andratchet mechanism for adjusting the beam of a motor vehicle lamp, a ratchet wheel 1, connected by a rod 2 to a movable part of the lamp, is held against the tension of a spring 3 by a spring-pressed detent 8 mounted on a fixed pin 9. The ratchet wheel is moved clockwise one tooth in opposition to the spring when a switch 16 is operated manually to close the circuit to an electromagnet 7, the pivoted armature 6 of the electromagnet operating the ratchet wheel through a pivoted pawl 4 tensioned by a spring 18. The ratchet wheel is moved anticlockwise one tooth by the spring 3 when the switch 16 is operated to close the circuit to an electromagnet 10 to attract the armature 11 which is pivoted on the pin 9. The armature 11 carries dogs 14, which withdraw the pawl 4 and detent 8 from the ratchet wheel, and a detent 12, which engages the ratchet wheel. When the circuit is again broken the armature 11; pawl 4, and detent 8 return to the positions shown. The spring 3 may act on the part to be moved instead of directly on the ratchet wheel 1. The rod 2 is advantageously mounted in sockets in the ratchet-wheel and the lever operating the moving part instead of being articulated to them. Specification 490,933, [Group XI], is referred to.
Patent GB-613566-A (GB)
Title: Improvements in and relating to halogenated hydrocarbon compositions
IPC: H01B3/18
Filed: 1946-06-17
Abstract: 613,566. Insulation materials. BRITISH THOMSON-HOUSTON CO., Ltd. June 17, 1946, No. 18139. Convention date, June 18, 1945. [Class 36] An insulating compound for electrical apparatus comprises a liquid halogenated aromatic compound and a fixative for halogen decomposition products, the fixative consisting of a polycyclic alkaloid compound containing at least one heterocyclic ring and a plurality of hetero atoms, at least one of which is nitrogen. Such polycyclic stabilizers may be chosen from the alkaloid group including brucine and nicotine. Also included are derivatives of five numbered heterocyclic ring compounds having two hetero atoms. The amount of fixative present in the insulating composition varies from 0.1 to 10 per cent depending on the apparatus. Examples of halogenated compounds suitable for insulating purposes are given in Specifications 394,776, 430,121, 433,070 433,071 and 433,072.
Patent GB-1195918-A (GB)
Title: Improvements in and relating to Liquid Fuel Burning Heaters.
Inventor: HEBARD HUGH CHARLES
IPC: F24C5/04
Filed: 1968-04-17
Abstract: 1,195,918. Extinguishing wick burners. ALADDIN INDUSTRIES Ltd. 2 April, 1969 [17 April, 1968], No. 18152/68. Heading F4T. An extinguishing member 7 in the form of a ring supported by a spider is slidably mounted above and coaxial with the annular wick 1 of a liquid-fuel-burning heater and supported on a rod 14 extending between the extinguishing member and the ground, a spring 16 urging the rod downward, so that on overturning of the heater the rod and extinguishing member move downward into engagement with the top of the wick. The extinguishing member is guided by a rod 4 mounted in the chimney of the heater, which may be opened for lighting the burner, a lug on the extinguishing member then disengaging from a hook at the upper end of rod 14. Lifting the heater by its handle (not shown) engages rod 4 and thus prevents extinction of the flame.
Patent GB-861821-A (GB)
Title: A unit arrangement of gas combustion turbine plant
Inventor: SYPTAK KAREL
IPC: F02C7/08
Filed: 1958-06-06
Abstract: 861,821. Generating combustion products under pressure. PRVNI BRNENSKA STROJIRNA ZAVODY KLEMENTA GOTTOWALDA NARODNI PODNIK. June 6,1958, No. 18155/58. Class 51 (1). [Also in Group XXVI] The inlet 4 of a gas turbine is disposed within the outlet 3, the former being connected by a duct 7 to a combustion chamber 8, and the latter being connected by a duct 12, surrounding duct 7, to a heat exchanger 5 disposed within the annular space between ducts 7 and 12. The exhaust gases pass through a series of pipes 6 to a collecting duct 9 for discharge to a stack. The combustion air flows from an inlet 10 over the surface of pipes 6 and returns to the combustion chamber through the annular space between duct 7 and an annular wall 11 surrounding the latter.
Patent GB-286146-A (GB)
Title: Improvements in tobacco pipes and cigar and cigarette holders
IPC: A24F1/08
Filed: 1927-07-08
Abstract: 286,146. Saunders, W. July 8, 1927. Tobacco pipes and cigar and cigarette holders. -The stem and mouthpiece are bored out to form chambers G, and are connected together by a bush A, through which passes a tube E of aluminium &c. with contracted ends F. The forward end of the bush is screw-threaded for engagement with a similar formation in the - stem.
Patent GB-516078-A (GB)
Title: Improvements in and relating to fixing attachments on rods, tubes, rollers and the like
IPC: F16B21/16
Filed: 1938-06-20
Abstract: 516,078. Warn beams. COURTAULDS, Ltd., and THOMPSON, G. June 20, 1938, No. 18267. [Classes 120 (iii) and 142. (ii)] [Also in Group XXIV] A flange or collar is adjustably secured to a warp beam or other member by means of a serrated key which engages serrations in the beam and is formed with one or more heads for taking thrust, the flange being provided with a set-screw for securing it to the key, and thereby to the beam. The warp beam shown in the Figure carries at each end a flange 2 having attached thereto a ring 4 formed with a slot engaging a serrated key 7 which engages serrations 5 in the beam and is secured by a set-screw 10. The key is formed with a head 9 for taking thrust, either directly or by means of an adjusting-screw mounted therein. In another construction, the flange fits between two heads on the key and is secured by two screws.
Patent GB-138553-A (GB)
Title: Improvements in and applicable to pneumatic tyres and tubes
IPC: B60C19/12
Filed: 1919-07-23
Abstract: 138,553. Andrews, J. A. July 23, 1919. Jackets and covers. - A pneumatic tyre comprises an air-tube 1, of the section shown or otherwise, between which and the tread of the cover 2 is fitted a band of hard baked granulated cork formed of sectors 3 and wedging-portions 6. The spaces 4 may be filled by bands of solid or perforated rubber, and spongy-rubber strips 7 may be fitted between the cork sections.
Patent GB-1467812-A (GB)
Title: Cahtode ray tubes
IPC: H01J29/80
Filed: 1974-06-14
Abstract: 1467812 Colour television tube EMI Ltd 14 June 1974 [17 April 1973] 18347/73 Heading H1D To allow change of colour emission without the necessity for change in deflection drive level a rectangular "Penetron" tube 1 with upper phosphor layer 4 emitting a first colour on impact by low energy electrons and deeper phosphor layers 5 emitting a second colour on penetration of the first layer by higher energy electrons, and with both layers overlying transparent target electrode 3, carries adjacent and parallel to the screen a mesh electrode 9 forming with wall anode 8 optionally helical, or other electrode between the mesh electrode 3 and source 6, an accelerating and converging lens tending to cause the electron beam from gun 6 and scanned by means 7 and by corresponding perpendicular means (not shown), to pass mesh 9 perpendicularly. With potentials above cathode 11a of 1 kV. on gun 6, 2À5 kV. on wall anode 8 and 10 kV. on mesh 9, for the first colour, and for the second 3À75 on 8 and 15 kV. on 9, the change of acceleration in the region between mesh 9 and target 3 on transfer by switch 14 of target 3 from 10 kV. to 15 kV. changes light emission from layer 4 to layer 5 without change of deflection. Shape 15 of the edge of wall anode 8, correcting rectangularity of the tube, is omitted in a circular tube (Fig. 1, not shown). In a second embodiment (not illustrated) of an air traffic control tube, for simultaneous writing in one colour and either one of a second and third, having three phosphor layers above the target electrode able to emit respectively, e.g. white, green and red light requiring 5, 10 and 15 kV. upward target potential above cathode for activation, the white layer exhibits persistence, and with two guns having separate deflecting systems and with cathodes respectively 20 and 10 kV. below target, the red phosphor is activated by the first gun and green by the second. On reducing the target potential by 5 kV., leaving both cathodes unchanged, the red phosphor still responds to the first gun, but white to the second. The deflection of the beam from either gun can be stabilized by the mesh and wall electrodes, the other requiring correcting deflection modulation.
Patent GB-1391075-A (GB)
Title: Device for joining a branch pipe union to a main
IPC: B29C65/02
Filed: 1972-04-20
Abstract: 1391075 Connecting branches to main pipes MESSER GRIESHEIM GmbH 20 April 1972 [21 April 1971] 18395/72 Heading F2G A branch junction piece 1 is welded to a plastics pipe 3 (before boring a hole at 32) by means of an apparatus for providing regulatable spring contact pressure between the end of 1 and 3. When spindle 10 is screwed into sleeve 15, the force of compression spring 18 is transmitted through the spindle to the upper member 6. The compression of the spring is independently adjustable and is indicated on scale 20. A heating element (26, Fig. 1, not shown) is employed for the welding.
Patent GB-1530503-A (GB)
Title: Testing of transmission lines
IPC: G01R27/16
Filed: 1977-04-18
Abstract: 1530503 Measuring transmission line impedance BRITISH BROADCASTING CORP 18 April 1977 [5 May 1976] 18429/76 Heading G1U The characteristic impedance of a transmission line is determined by terminating a length of the line in an adjustable impedance ZC2 and by adjusting the said adjustable impedance until the impedance seen looking into the line from the other end equals the value of the adjustable impedance, this being achieved using the bridge shown which includes an impedance ZC1 ganged to, and identical to, the said adjustable impedance ZC2.
Patent GB-737179-A (GB)
Title: Improvements in or relating to fuel systems for internal combustion engines
Inventor: DAVIES DAVID OMRI
IPC: F02D1/00
Filed: 1952-07-21
Abstract: 737,179. Gas turbine plant. ROLLSROYCE, Ltd. July 15, 1953 [July 21, 1952], No. 18430/52. Class 110 (3). [Also in Group XXIX] In a control system for the supply of liquid fuel of which the viscosity is a unique function of the density to an internal-combustion engine, such as a speed governor comprising a diaphragm 24 subject to the pressure rise generated by a centrifugal pump 20 in the .rotor of a variable swashplate fuel pump, the diaphragm actuating a leak-off valve 18 which controls the position of a servo-piston 13 controlling the angle of the swashplate, the effect on the system of changes of fuel density is substantially eliminated by a second diaphragm 33 connected by a rod 27 to the diaphragm 24 and subject to a load dependent upon the viscosity of the fuel. A conduit 28 interconnects the inlet and delivery passages 22, 15 of the pump and a relief valve 29 ensures a constant pressure drop across orifices 30, 31 which are respectively a sharp-edged orifice and a viscous restrictor, the latter having laminar flow and, as shown, being of annular form. The pressure drop across the orifice 31 therefore varies with viscosity to act on the diaphragm assembly in opposition to the effect of variations of density of the fuel handled by the centrifugal pump. A restriction 32 limits flow through the relief valve 29. In a modification, the diaphragm 24 is subject to the pressure drop across an orifice in series with an enginedriven fixed-capacity pump instead of to the centrifugal pump pressure, and in a further modification the two diaphragms are interconnected by a spring.,
Patent GB-972400-A (GB)
Title: Process for preparing kallikrein
IPC: C12N9/64
Filed: 1962-05-14
Abstract: Kallikrein is prepared by the fractional precipitation of pigs' urine with acetone, collecting the kallikrein-containing precipitate and dissolving it in water, subjecting the solution obtained to a further acetone precipitation, dissolving the precipitate obtained in water and subjecting the aqueous solution obtained to chromatography on a polydextrane column to obtain a colourless, aqueous solution of kallikrein containing less than 10 m g of protein per KU.
Patent GB-438947-A (GB)
Title: Improvements in pneumatic fender tool
IPC: B21D1/12
Filed: 1935-06-28
Abstract: 438,947. Pneumatically operated tools. CHAMPAYNE, R. J., 2915, West State Street, Rockford, Illinois, U.S.A. June 28, 1935, No. 18608. Convention date, Nov. 26, 1934. [Class 124] [See also Group XXII] A pneumatically operated hammer which is hand controlled and readily portable is used for beating back to shape dented sheet metal. The hammer has a resilient frame for springing over the work. The anvil 17 may be carried by a pillar 13 provided with a recess for a plug 16, which is attached to a casing 12 supported on the limb 14 of the frame. The anvil is detachably and pivotally mounted. The hammer casing carries a guide 42 on which slides a piston 58 made integral with the tup 20. The guide 42 and piston 58 have passages for intercommunication and in the position shown in Fig. 5, compressed air would be passing through passages 56, 67, 64, 65 to the top of the tup driving it downwardly against the work until communication is established to the atmosphere at 68 and broken at 67. Thereupon the hammer rises until connection is again established at 67. The air pressure is hand controlled by a valve 49 operated by means of a handle 51, which can be fixed by a link 53.
Patent GB-483068-A (GB)
Title: Improvements in or relating to the production of magnesium and other alkali earth metals by electrolysis of fused electrolytes
IPC: C25C7/02
Filed: 1936-07-06
Abstract: 483,068. Electrolytic production of magnesium and alkaline earth metals and their alloys. MAGALL AKT.-GES. July 6, 1936, No. 18695. Void. Convention date, Sept. 27, 1935. [Class 41] The metals are obtained by electrolysis of their fused halides which are regenerated by reaction of the nascent halogen with anode material consisting of lumps of a composition containing carbon and the oxide or carbonate of the metal to which, in order to increase the conductivity, there is added powdered graphite or an organic substance such as sugar, molasses, tar or pitch which produces carbon on heating. The anode material may be contained within a perforated nonconducting chamber 2 and subjected to pressure by a metal or graphite block 3 serving as anode connection. Alternatively anode chambers may be disposed at the sides with a central cathode. Alloys of magnesium or alkaline earth metals with other metals such as aluminium may be made by incorporating a compound of the alloying metal in the anode material or by using a fused cathode of this metal. Specification 452,269 is referred to.