baber/WOPTO huggingface dataset:
Patent GB-898433-A (GB)
Title: Electron tubes employing electron multiplication
IPC: H01J29/38
Filed: 1960-09-15
Abstract: 898,433. Electron multipliers. WESTING- HOUSE ELECTRIC CORPORATION. Sept. 15, 1960 [Sept. 30, 1959], No. 31814/60. Class 39(1). In an electron multiplier comprising a plurality of transmissive dynodes 13, Fig. 1, between cathode 12 and anode 20, each dynode is secured to a peripheral metallic support, and each support is spaced from adjacent supports by insulating members 14 defining isolated compartments between successive dynodes. At least the first dynode comprises a continuous, electron-transmissive, secondaryemissive, insulating layer so that cathode material is confined to the compartment defined between the cathode and first dynode and ion feedback to the cathode from other parts of the multiplier is prevented. As shown, the ceramic members 14 are coated internally with resistive chromic oxide, and externally with platinum or silver to minimise charging. They are formed with holes 16 for electrical connections and for evacuating the spaces between the dynodes, and are held together by insulating rods 15. A coaxial line connection is made to the anode 20 and the last dynode, which is connected to metal envelope portion 19. During processing of the caesiated antimony photo-cathode 12, the pumping hole 23 in shield 22 may be closed by a ball manipulated through a side-arm at 33, or hole 23 may be omitted, the cathode compartment being evacuated separately. The last dynode may be replaced by an accelerating grid which electrostatically shields the anode. The dynodes may be made by settling a solution of nitrocellulose lacquer from water on to a nickel mesh and forming a film of aluminium or carbon with or without a thin film of gold on the organic film which is subsequently baked away. The secondary-emissive layer of potassium chloride, 200-2000A thick, is then formed by evaporation. Alternatively, the secondary-emissive layer and conductive scattering layer may be formed on a permanent film of SiO, Al or Al 2 O 3  on a grid, or on a self-supporting film of metal or aluminium or magnesim oxides. In a further embodiment, the dynodes are supported by non-magnetic spacers 63, Fig. 5, and rings 61 of a magnetic alloy which are sealed, by heliarc wetting, between glass or ceramic envelope portions 62, e.g. of alumina. The photo-emissive cathode 64, which may be of gold, may be evaporated on to the surface of a movable glass plate facing away from the dynodes, a wire spring mechanism being provided to flip over the glass to place the cathode in the operating position. The anode 69 may be replaced by a layer of aluminized phosphor, the device being disposed in a uniform magnetic focusing field. For use in photographing rapidly moving objects, the image intensifier may be provided with a fine mesh control grid between its first and second dynodes. In a further image intensifier, Fig. 7 (not shown), the cathode and phosphor are disposed on part-spherical ends of a frusto-conically shaped envelope, the dynodes also being part-spherical, to obtain image magnification. Specifications 792,507 and 862,211 are referred to.
Patent GB-174241-A (GB)
Title: Improvements in or relating to washing boards
IPC: D06F1/00
Filed: 1920-11-10
Abstract: 174,241. Johnson, S. J. P. Nov. 10, 1920. Washing-boards are detachably secured to the inside of a tub by a spring clip 10, the legs of the clip engaging the side wall 1 and the slotted middle portion of the clip embracing the ends of a T- shaped pin 13 rotatably secured by its shank 6 to an attachment plate 4. The clip and pin form an attachment member and 'hinge for the washing- board, which can be held inclined within the tub as shown or supported outside the tub when it is desired to remove the clothes.
Patent GB-966815-A (GB)
Title: Vehicle direction indicator switches
Inventor: BURFORD ERNEST SELWYN
IPC: B60Q1/42
Filed: 1962-08-20
Abstract: 966, 815. Road traffic signals on vehicles. JOSEPH LUCAS (INDUSTRIES) Ltd. Aug. 6, 1963 [Aug. 20, 1962], No. 31827/62. Heading G4Q. A self cancelling turn indicator switch, comprising a lever 4 carrying a pair of resilient arms 5 one or other of which is urged into the path of a pin 9 carried on the steering column. When the switch lever 4 is in an operated position, it is characterized in that a number of parallel slots 7 are cut in each arm to provide resilience. Rotation of the steering column in one direction will cause the pin to contact the arm so as to open out the slots, and move the arm out of the path of movement of the stud, but return movement of the stud will result in closing of the slots so that the stud cannot pass the arm without moving the lever to its inoperated position.
Patent GB-1034205-A (GB)
Title: Improvements in arrangements for and methods of producing dirt packs in underground mines with the aid of pneumatic stowing machines
IPC: E21F15/10
Filed: 1963-08-13
Abstract: 1,034,205. Pneumatic conveyers. R. H. REILLY. Nov. 12, 1964 [Aug. 13, 1963], No. 31923/63. Heading B8A. [Also in Division E1] Dirt is stowed in a mine by means of a pneumatic dirtstowing machine, means being provided for introducing water into the compressed air flowing to the machine. The machine is of the rotary feed wheel type with a dirt supply hopper 7 which may be sprayed with water. A Venturi section 2 of the compressed air feed pipe 1, 2, 3 is supplied with water through a pipe 12. Wetting or foaming agents may be added to the water and turbulance inducing means may be arranged downstream of the pipe 12. Surplus air from the machine is supplied to the section 2 by a pipe 9.
Patent GB-1425334-A (GB)
Title: Injection internal combustion engine fuel supply system
IPC: F02M37/00
Filed: 1973-07-05
Abstract: 1425334 I C engine fuel injection systems MOTORENFABRIK HATZ KG 5 July 1973 [16 Aug 1972 4 April 1973] 32065/73 Headings F1A and FIB Fuel supplied under gravity to an injection pump 14 through a conduit 12 from a tank (10), Fig. 1 (not shown), is in part returned to the tank through a return conduit 18 and a check-valve 30 and air in the system is vented. The checkvalve 30' permits restricted fuel flow from the conduit 18 to the pump 14, e.g. through a groove 100c. The check-valve (30), Fig. 4 (not shown), may have apertures (30a) to permit restricted flow when seated or grooves (18r). Fig. 5 (not shown), may be provided in the seat (18 s ). The pump body 14a is inserted in an engine for cam operation of the piston 24. The supply and return conduits 12 and 14 may be connected separately to the pump suction chamber 14 s , Fig. 2 (not shown). A filter (16), Fig. 1 (not shown) is mounted in the conduit 12.
Patent GB-1499551-A (GB)
Title: Spindle assembly
IPC: F16D25/08
Filed: 1975-07-31
Abstract: 1499551 Grinding SEIKO SEIKI KK 31 July 1975 [2 Aug 1974 28 Oct 1974] 32076/75 Heading B3D [Also in Division F2] A spindle assembly comprises a spindle 7 mounted in a housing 48 by bearings 8, 9, 14 and 15, lubrication of the bearings is enabled by oil jet nozzles 25 and 28 which are supplied with oil either via oil inlet path 24 and groove 26 in the spacer 11 or via oil inlet path 27, groove 29 and path 32 the used oil is then drained off via paths 33, 34, 35 and 36, entry of dust from outside through the gap between the opening in the housing through which one end of the spindle projects and the spindle itself is prevented by means of an air seal which consists of an annular recess 39 in the centre of the bearing cover 12 the air seal being connected to an air supply via an air path 40. The assembly may be used in an internal grinding machine.
Patent GB-788791-A (GB)
Title: Plain bearings and composite bearing materials
Inventor: LOVE PHIL PRINCE
IPC: B05D5/08
Filed: 1954-11-05
Abstract: 788,791. Laminates; coating webs. GLACIER METAL CO., Ltd. Oct. 31, 1955 [Nov. 5, 1954], No. 32085/54. Drawings to Specification. Class 140. Material suitable for the making of plain bearings is made by continuously passing a strip of aluminium or aluminium alloy through an apparatus where at least one surface of the strip is provided with a porous and/or indented surface, then through apparatus whereby a layer of polytetrafluorethylene is applied to the treated surface and then applying heat and pressure to the two to cause the polytetrafluorethylene to enter the pores and/or indentations and to adhere to the treated metal surface. Suitable alloys are those of aluminium with tin, lead or cadmium. The surface treatment may consist of anodizing, phosphating and/or mechanical indentation. The polytetrafluorethylenes may be applied as a continuous strip or as a paste or dispersion, the heating and pressing causing coagulation of the particles which can be of about 1Á in size and dispersed in, e.g., water or paraffin. The polytetrafluorethylene may contain such fillers as wood flour and/or glass fibres or a proportion of molybdenum sulphide. The composite strip may be rolled to a constant predetermined thickness. As shown, a strip A of aluminium alloy containing antimony cadmium or lead is drawn from a coil A1 and passes between straightening rollers B and a cleaning device C, then between a plain roller D<SP>1</SP> and a roller D having a surface formation to produce closely-spaced indentations or shallow grooves on the upper surface of the strip. A roller E applies wax to the lower surface and the strip then passes through an anodizing or phosphating bath F and is dried at G. A layer of polytetrafluorethylene paste is extruded on to the strip at H and is compacted by rollers J, after which the strip passes through heating apparatus K which subjects it to radiant heat to raise its temperature to about 370‹ C. It then passes through sizing rollers L and is wound at M. Bearing may be cut from the roll M and bent into cylindrical or semi-cylindrical shape. Specifications 735,854 and 756,950 are referred to. Reference has been directed by the Comptroller to Specifications 657,080, 690,031, [Group XXXIV], and 735,854.
Patent GB-533896-A (GB)
Title: Improvements in mercury circuit interrupters
IPC: H01H29/30
Filed: 1939-12-13
Abstract: 533,896. Mercury switches. GENERAL MOTORS CORPORATION. Dec. 13, 1939, No. 32115. Convention date, Dec. 15, 1938. [Class 38 (v)] A mercury interrupter such as that described in Specification 533,690 is manufactured by first completely encasing the carbon electrode 2 with glass or other insulating material 8 and then grinding off the lower surface or tip so as to expose a small area of the carbon. The second electrode 12 is then mounted alongside within the insulating case 16 and this is then evacuated, filled up to a given level with mercury and sealed off at 22.
Patent GB-651385-A (GB)
Title: Improvements in or relating to methods and apparatus for recording television or like pictures on cinematographic film
IPC: H04N5/84
Filed: 1948-12-13
Abstract: 651,385. Television. CINEMA - TELEVISION, Ltd., and JESTY, L. C. Dec. 13, 1948, No. 32146. [Class 40 (iii)] Television pictures produced by interlaced scanning on the screen of a cathode-ray tube are recorded on intermittently-moving cinematographic film, the " pull-through" time of which, through the gate of the recording camera, is of greater duration than the fly-back time of the scan but shorter than the traversal time of the scan, and the positions where lines are missing from the recorded picture, as a result of non-recording during the " pullthrough" period, are equally distributed at the top and bottom of the picture. The gaps at positions where interlacing lines are missing may be " filled in " by elongating the scanning spot in the cathode-ray tube in a direction perpendicular to the direction of line scanning or by the application of an additional high-frequency deflection (perpendicular to the direction of line scanning) to the scanning spot. The positions of these gaps depends on the phase relationship between the camera operation and the television scan and to prevent a noticeable movement in the structure of the recorded picture the " filling-in " of the gaps is controlled by means of a synchronizing signal which is generated electro-optically and controlled by the camera mechanism. To equalize the brightness over the whole recorded field the lines at positions where interlacing lines are missing may be made brighter than the recorded lines by, e.g., increasing the amplitude of the modulating signal applied to the cathode-ray tube or, alternatively, a light-absorbing filter covering that portion of the picture where the full number of lines are recorded may be interposed between the camera and the screen of the cathode-ray tube. Specification 638,443 is referred to.
Patent GB-612103-A (GB)
Title: Improvements in or relating to spring forks for motor cycles and the like
IPC: B62K25/08
Filed: 1946-10-30
Abstract: 612,103. Spring forks. LAMBERT, R. N. Oct. 30, 1946, No. 32171. [Class 136 (iii)] [Also in Group XXXII] In a motor-cycle spring fork comprising a pair of upper and lower telescopic tubular members, a tube 14 is movable with each lower member 8 and extends into the upper member 1 through a bushing 7 and has a slot 15 along its length to allow passage of hydraulic medium between the tubular members, and a valve 16 allows free fluid flow from the lower to the upper member. The slot 15 is tapered, decreasing in width as it progresses up the tube away from the bushing more than it decreases in width as it progresses down the tube away from the bushing.
Patent GB-955288-A (GB)
Title: Improvements in or relating to control means for valves for controlling the flow of fluids
IPC: G05D9/04
Filed: 1961-09-07
Abstract: 955,288. Valves. A. W. WOOD. Sept. 7, 1962 [Sept. 7, 1961; June 13, 1962; June 15, 1962; July 19, 1962], Nos. 32184/61, 22682/62, 23144/62 and 27822/62. Heading F2V. [Also in Divisions F4 and G3] A safety control means comprises a valve 8, fluid pressure means 9, 10 controlling the valve, an enclosed space 11, 12 surrounding a conduit 6 to be protected and connected to the fluid pressure means, and means 19 for establishing in the enclosed space a pressure different from that in the ambient atmosphere and in the conduit 6 to open the valve, the arrangement being such that on removal of the pressure differential the valve is automatically closed. In the preferred embodiment, the valve 8 consists of a rubber diaphragm normally held off the top of a pipe 5 by reduced pressure in a cylinder 9 and which is connected by the space 11, 12 and a chamber 15 to a suction bulb 19. When the chamber 15 is tilted to a predetermined angle a member 17 either topples off the chamber or falls about a hinge to allow air to enter an inlet 16 and the valve 8 to close. The member 17 may also be caused to uncover the inlet 16 by engagement of a pin 26 with a float arm 23 if liquid rises to an excessive level in a chamber 13 containing a second float-operated valve 21 controlling the outlet of the conduit 6. The latter and an outer conduit forming the space 12 may be of polyethylene or polypropylene to allow an oil burning appliance of the radiant or convector type on which the chamber 13 is mounted to be moved about. Closure of valve 8 also occurs if either conduit is fractured or the float arm 23 is operated manually by a lever 29. The valve 8 may be loaded by a spring or be replaced by a needle valve connected by a linkage to a barometric capsule.
Patent GB-927282-A (GB)
Title: Improvements in or relating to material comprising collagen fibres
IPC: C09H3/00
Filed: 1958-10-09
Abstract: A material comprising collagen fibres is prepared by adjusting the ionic strength of an aqueous solution of collagen at pH 2 to 4.5, e.g. 3.5 to 4, at a temperature not over about 5 DEG C., to within the range 0.1 to 0.5, and the pH to within the range 5.2 to 9.5, while maintaining the temperature at not over about 5 DEG C., thereafter raising the temperature above 5 DEG C. but not above 37 DEG C., e.g. to between 20 DEG C. and 37 DEG C., and after precipitation of collagen fibres from the solution and the formation of a gel, the fluid is removed from the gel to produce a material in which the precipitated collagen fibres, as well as any dispersed collagen fibres that were present before raising the temperature, are intimately interlocked.  The aqueous solution of collagen may be prepared by communiting and swelling skins, e.g. young mammalian skins such as skins of calves, colts or kids, in an aqueous bath of pH 3 to 5.2.  The swollen skin may be subjected to a shearing action in a mechanical device.  The solution may be prepared from fresh salted cured scrap leather or from limed scraps which have been neutralized and washed or treated with a chelating agent to remove calcium ions.  The aqueous bath may be acidified with acetic, formic, propionic, citric, phosphoric, hydrochloric, sulphuric or other common organic and mineral acids.  Before raising the temperature above 5 DEG C., one or more of the following may be added: additional collagen fibres, a tanning agent, a dyestuff, e.g. water soluble acid or direct dyestuff, a humectant, e.g. an aliphatic polyhydroxy compound such as sorbitol or glycerine, fat liquor, e.g. Neatsfoot oil emulsion, additional non-collagenous fibrous material, e.g. cotton or nylon.  The additional collagen fibres may have been chemically treated to protect them from excessive hydration, e.g. by light tanning with formaldehyde, which may result in 3/4 to 2% of combined formaldehyde based on the dried weight of fibre, or by treatment with a chrome compound, and may have been subdivided in the presence of water.  Before or after addition of the additional collagen fibres the pH may be adjusted to about 7.5.  After addition of the collagen fibres, the dissolved collagen represents from 1 to 50% of the total solids content of the mixture.  Before raising the temperature above 5 DEG C., the mass may be sheeted out.  The sheetedout mass may be coated with collagen solution and may be covered with a thin polyethylene film in contact with its exposed surface.  The dried sheet may be subjected to any of the conventional tanning treatments.
Patent GB-512759-A (GB)
Title: Improvements in or relating to zinc alloys
IPC: C22C18/04
Filed: 1937-11-23
Abstract: 512,759. Alloys. NATIONAL SMELTING CO., Ltd. Nov. 23, 1937, No. 32213. Void. Convention date, Feb. 1. [Class 82 (i)] Zinc alloys suitable for the production of articles by deep-drawing contain 6-15 per cent. of aluminium with or without up to 1 per cent. of copper. If the aluminium content is 10-15 per cent. there may also be present 0.005-0.01 per cent. of magnesium with or without up to 0.03 per cent. of lithium. The zinc is more than 99.99 per cent. pure.
Patent GB-281675-A (GB)
Title: Improvements in or relating to processes for liquefying and separating the constituents of gaseous mixtures at low temperatures
IPC: C01B3/50
Filed: 1927-11-30
Abstract: 281,675. Soc. L'Air Liquide, Soc. Anon. pour l'Etude et l'Exploitation des ProcÚdÚs G. Claude. Dec. 4. 1926, [Convention date]. Drawings to Specification. Purifying processes.-Oxides of nitrogen con. tained in coke oven gas arc removed or destroyed by heating the gas to bright redness.
Patent GB-202894-A (GB)
Title: Improvements in punching machines for statistical and like cards
Filed: 1922-11-27
Abstract: 202,894. Vox Maschinen-Akt.-Ges., and Vogelsang, W. Nov. 27, 1922. Time recorders for workmen &c.-A device for perforating statistical cards comprises selecting elements in the form of rollers serving as a support for the card punches and having recesses into which unselected punches can recede, the rollers being, except at the moment of punching, free so that they can be operated bv clockwork or by a counting device. For perforating a number with four digits sixteen punches are arranged four in a row. The punches 10 are supported on shoulders and guided in a plate 11, the cards being inserted in a slit 14 between a reciprocating die 13 and a stripping block 12. The punches for each digit are selected by the rotation of rollers each comprising four notched discs 4 keyed to shafts 3 in such a manner that levers 8 block the axial movement of selected punches during perforation. The shafts 3 are geared by a transfer mechanism, which varies with the nature of the counting, and carry discs 18 indicating the numeral punched.
Patent GB-1277677-A (GB)
Title: Polytrimellamide-imides solutions
Inventor: GATTUS JEAN
IPC: C08J5/18
Filed: 1970-07-03
Abstract: 1277677 Polyamide-imide films RHONE POULENC SA 3 July 1970 [4 July 1969] 32461/70 Heading B5B [Also in Division C3] Films are cast from a solution of a polytrimellitamide-imide in a non-hydroxylic polar organic solvent which comprises, by wt. based on the polymer, # 0À5% di-, tri-, or tetracarboxylic aromatic acid anhydride and # 0À5% aromatic diprimary diamine. The polymer may be obtained by reaction of trimellitic anhydride with X-A-X where A is m- or p-phenylene, p,p<SP>1</SP>-biphenylene, or where B is O, CH 2 , C(CH 3 ) 2 , or SO 2 ; and X is -NCO or -NHCOOR in which R is C 1-6  alkyl, phenyl, or methylphenyl. The solvent may be N-methyl- -pyrrolidone or -caprolactam, or dimethyl- -formamide, -acetamide, or -sulphoxide. The anhydride may be where Y is H, COOH, or pyromellitic dianhydide or where D is -N=N-, -N=N-, -CO-,   The diamine may be H 2 N-A-NH 2 . The polymer may have # red  0À8-1À8 dl./g. The solution may have # abs  500-2000 poise at 25 C. The film is formed by casting a layer on a metallic support, evaporating the solvent, and detaching the film. The film is much more readily detached than a control film prepared from a solution not containing the anyhdride and diamine. Specification 1240291 is referred to.