baber/WOPTO huggingface dataset:
Patent GB-672962-A (GB)
Title: Improvements in or relating to television and like pick-up or camera tubes
IPC: H01J29/02
Filed: 1946-08-20
Abstract: 672,962. Electron multipliers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 20, 1946 [Aug. 21, 1945], No. 24857/46. Class 39 (i). In a television or like pick-up tube including an electron multiplier, the multiplier comprises one or more dynode discs 13, 14, 15, Fig. 3, with a plurality of radial vanes 20 formed therefrom and shaped into radial troughs. The discs 13, 14, 15 are of silver-magnesium alloy and the vanes 20 are formed by stamping; the vane parts preferably make, angles of 45 degrees to the plane of the discs and 90 degrees to each other. The troughs in adjacent discs face in opposite directions and the sides 19a of the troughs shield secondaries emitted from the other sides of the same troughs from preceding electrostatic fields. The dynode discs have central apertures and are mounted on the first anode 5, Fig. 1, of the electron gun with the interposition of an insulating tube 10; alternatively the insulating tube 10 may be omitted in which case the inner edge of the discs is spaced therefrom and the discs are supported from their peripheries by brackets 22 and insulating rods 23. The discs may be supported both on the tube 10 and from their peripheries, as shown in Fig. 1. The end of the first anode 5 is secondary emitting and forms the first dynode. Secondaries pass through a screen 12 and impact the second dynode 11 constructed as described in Specification 634,639, the other dynodes 13, 14, 15 being constructed according to the invention. The tube is of the low velocity beam scanning type. In a modified dynode construction, Fig. 4, the parts of the vanes are formed on opposite sides of the discs. Webs 42 at the outer and inner ends of the vanes 38 strengthen the discs.
Patent GB-700348-A (GB)
Title: Improvements in and relating to lamp shades
IPC: F21V1/26
Filed: 1949-09-28
Abstract: 700,348. Lampshades. WAITE & SON, Ltd., and STRUTT, P. W. Sept. 28, 1950 [Sept. 28, 1949] No. 24883/49, Class 75 (2) A lampshade comprises a plurality of separate panels 2 interconnected at one end by a continuous flange-part 3 and at the other end by a rigid frame element 5, the adjacent edges of the panels being held together by decorative braid and adhesively applied thereto. As shown the panels 2 are cut from a blank to leave a continuous integral bottom portion 3 to which a shaped ring 7 is stuck or clipped, the top edges 6 of the panels being bent over to embrace the ring 5. The shade is then blocked to shape on a former to close together the adjacent edges of the panels 2 ready for the application of the adhesive-coated braid 9, the latter being fed from a reel over an adhesive applying roller. The braid 9 may extend around the top and bottom edges of the shade. To increase the rigidity of the shade, adhesive 10 may be applied to the inside thereof along the meeting edges of the panels 2.
Patent GB-1171530-A (GB)
Title: Passive-Weight Stabilizers for Marine Vessels
IPC: B63B39/02
Filed: 1967-05-31
Abstract: 1,171,530. Ship stabilizers. HYDRONAUTICS Inc. 31 May, 1967 [16 Sept., 1966], No. 25014/67. Heading B7M. A stabilizer of the passive-weight type for suppressing the rolling-motion of a marine vessel comprises an elongate rectangular gastight tube 11, Figs. 3 and 5, containing a truck carrying lead weights 129 and furnished with rollers 60, 64, the end walls of the truck being connected by helical compression springs to the ends of said tube and provided with sealing strips or gaskets (76), Fig. 6 (not shown), which engage with the inner surfaces of said tube so that the interior of the tube is divided into two gas-tight compartments or chambers 72, 74 containing air or a gas. The oscillatory motion of the truck within the tube in response to rolling of the vessel is rendered in anti-phase with the latter by the springs aforesaid and the air or gas in one chamber 72, or 74, being compressed by the truck, a proportion of the air or gas being ejected into the other chamber through a pipe 82 containing an adjustable throttling-valve 94. The tube is orientated athwartships and attached to the main desk of the vessel by foot members (16), Fig. 1 (not shown), and brackets (20). A cable 90 connected to the truck is supported by sheaves 96 at the ends of the tube and is employed to move the truck, whenever this is necessary, without causing the vessel to heel or roll. The truck can be locked by clamping the cable 90 between members 97, 98. In a second embodiment, Fig. 9, the stabilizer includes a rectangular tube containing a solid mass 212 having rollers 214 thereon supported by rails 216, a pump 236 being connected to the mass by a flat belt 220 and having its input and output sides connected to each other by a pipe 238 containing a throttling valve 246, whereby oscillation of the mass longitudinally of the tube in response to rolling of the vessel is rendered in anti-phase with the latter. The pipe 238 may be furnished with fins 240 to facilitate dissipation of heat therefrom. The belt is kept in tension by a spring-loaded pulley or sheave 228 and a further pulley or sheave (234), Fig. 11 (not shown), which is supported by a pair of compression springs 230. The arrangement of the belt and the tensioning thereof is such that the solid mass is biased towards a position mid-way between the ends of the tube.
Patent GB-236089-A (GB)
Title: Improvements in and relating to floors
IPC: E04B5/06
Filed: 1924-10-21
Abstract: 236,089. Billner, K. P. Oct. 21, 1924. Floors of reinforcedconcrete girders side by side; girciers.-A floor is formed of pre-cast porous reinforced-concrete beams 1 laid close together with solid concrete or cement mortar cast in the, spaces 2 to form stiffening ribs. A top layer of solid concrete may be added, and the ribs and top layer may be reinforced.
Patent GB-783163-A (GB)
Title: Improvements in or relating to electron discharge devices and to circuit arrangements embodying such devices
Inventor: LUBSZYNSKI HANS GERHARD
IPC: H01J31/44
Filed: 1953-01-24
Abstract: 783,163. Cathode-ray tubes: electron multipliers. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Jan. 25, 1954 [Jan. 24, 1953], No. 25045/56. Divided out of 783,161. Class 39(1). Two or more trains of signals are amplified simultaneously in a single set of multiplier stages but modulating an electron stream corresponding to each train with a different high frequency, collecting all the streams at a single electrode, and then separating the signals in frequency discriminators. In one form, an image dissector with multiple scanning apertures 5, Fig. 1, in accordance with the parent Specification, the streams passing through each aperture are modulated by separate grids 11 at different high frequencies, amplified by stages of electron multiplication, stages 8 being individual to each stream and stages 11 common to all streams, collected by electrode 13 and the signals separated by frequency discriminators 14. In another form, light beams representative of each signal fall on different parts of photocathode 17, Fig. 3. The streams proceeding from each part are modulated at different high frequencies either by grids 11 or by modulating the incident light beams as by Kerr cells.
Patent GB-726403-A (GB)
Title: Improvements in or relating to methods of treating germanium for use in electrical devices
IPC: H01L21/302
Filed: 1953-09-11
Abstract: Germanium, for use in semi-conductor devices, e.g. rectifiers and transistors, is treated in the molten state with nitrogen by heating it, e.g. to 1100 DEG  C., with germanium nitride.  The germanium nitride may be made by passing ammonia over pulverulent germanium at 800 DEG  C., and it may be added to molten germanium or mixed with powdered germanium and the mixture melted subsequently. The heating may take place in a protective atmosphere, e.g. hydrogen.
Patent GB-422623-A (GB)
Title: Improvements in and relating to the operation of what are known as frog-switches in tramway or trackless trolley systems
IPC: B60L3/00
Filed: 1934-09-01
Abstract: 422,623. Operating overhead frog switches of tramways &c. FOREST CITY ELECTRIC CO., Ltd., and QUILLIAM, S. T., 4, Longford Road, Stretford, near Manchester. Sept. 1, 1934, No. 25213. [Classes 104 (i) and 104 (iii)] When the car trolley wheel engages a setting contactor 2 on the conductor 1, a momentary current is established through 15, 7, 16 and car motor to earth, moving armature 17 to contact 18 and establishing a holding circuit through 19<x>, 17, 18, 19, 20, 8, 21 to earth 22. This moves armature 23 to 20 or 28 to 20<x> and establishes a circuit through 24, 25<x>, 25, 26, 23, 38, 28, 30<x>, 39 and solenoid 12 to earth 40. The solenoid core then moves the frog switch 5 through cable 34<x> against the restoring action of spring 6. At the same time, current passes from 20 through a parallel circuit 44, 45, to earth 22, lighting signal lamps 13, 14. When the car trolley reaches restoring contactor 3, current flows through 41, 9, 10, 43 to earth, energizing and removing armature 25 away from 25<x>. This brakes the holding circuit, and the circuit of the solenoid 12, so that spring 6 restores the frog to normal position. In another form the armatures are moved in both directions electrically. In another form, the frog lever is operated by a solenoid directly instead of by the cable 34<x>.
Patent GB-193450-A (GB)
Title: Improvements in filter elements
IPC: B01D39/08
Filed: 1922-06-23
Abstract: 193,450. Plauson's (Parent Co.), Ltd., (Plauson, H.). June 23, 1922. Filtering-media; grids and gratings. - Filter elements, specially applicable for presses as described in Specification 155,834 are built up of separate annuli of wire-netting, in which the strands of the warp are closer than those in the weft. The elements may be rendered less permeable by allowing talc, clay, gypsum, cement or the like to deposit in the pores from a suspension. Elements for the filtration of colloidal solutions may be further treated with a solution of rubber or cellulose ester.
Patent GB-157537-A (GB)
Title: Improvements in or relating to rear lamps for use in connection with motor cycles, cars and like vehicles
IPC: B60Q1/26
Filed: 1919-10-15
Abstract: 157,537. Headley, F. H. Oct. 15, 1919. Vehicle lamps; lantern doors and door fittings; reservoirs, attaching to lanterns.-In a vehicle lamp, the roof constitutes the means of access to the interior and, on being raised, automatically effects the displacement of the burner nearer to the top of the lamp. In one form, shown in Figs. 2 and 3, as an acetylene rear lamp, the walls a and name plate a<1> are constructed from one sheet of metal and a roof b, hinged by passing tongue-pieces b<1> through apertures b<2>, slopes downwards when closed. A U- shaped member c on the under side of the roof b is connected by links d to lugs e<1> on a plate e, which encircles a burner tube f and is held in position by a burner g. The burner tube f extends through apertures in plates o secured in the lower part of the casing and its lower portion is encircled by a coiled-spring h for moving the roof and the burner into the normal position when the roof is released. When the roof b is closed, the burner g is in alignment with windows j, and when raised the burner is raised to the top of the lamp. A match-striking surface k is provided on the under side of the roof. The plate e may also be assembled round a stationary tube within which is the burner tube, elongated slits being furnished in the outer tube. The links d may be connected to projections on the inner tube f. In a modification, an oil vessel or an electric lamp bulb is fixed within a plate or socket connected to links d and adapted to slide vertically within the casing a.. Ventilation is effected through vent holes at the bottom and openings m at the top of the lamp.
Patent GB-1426823-A (GB)
Title: Door checks
IPC: E05C17/20
Filed: 1973-05-25
Abstract: 1426823 Door stays BLOXWICH LOCK & STAMPING CO Ltd 22 May 1974 [25 May 1973] 25271/73 Heading E2F A stay mechanism particularly suitable for automobile doors, comprises a pivotally mounted stay arm 1 a fixed bracket 5, a bearing roller 10 rotatably mounted on the bracket, a pressure roller 12 rotatably mounted on a lever 15 which is pivoted to the bracket at 16, and a compression spring 18 which acts on the lever 15 to urge the rollers together so that recesses 22 on the arm may be engaged by one of the rollers as the arm 1 slides between the rollers. In the embodiment shown the arm 1 is formed from sheet metal as is the bracket 5 and the lever 15; the roller 10 being mounted between double flanges 8, 9 and the roller 12 extending between double flanges 14. In a modified form of the stay mechanism (Figs. 3, 4 not shown) the bracket and lever are formed with single flanges only. Preferably the line of action of the spring 18 is further away from lever pivot 16 than is the axis of roller 12 to provide a mechanical advantage greater than unity. For Figures see next column
Patent GB-1078873-A (GB)
Title: Improvements relating to rotary piston, fuel injection, mixture compressing internal combustion engines
IPC: F02B75/12
Filed: 1966-06-07
Abstract: 1,078,873. Rotary-piston, fuel-injection, mixture compressing L C. engines. DAIMLERBENZ A. G. June 7, 1966 [June 19, 1965], No. 25283/66. Heading F1F. In a rotary-piston, fuel-injection, mixture compressing I. C. engine of the type comprising a three-sided piston (5) mounted for planetary rotation within a housing (1) having an inner peripheral wall (2) of two-lobed epitrochoidal profile and air admission and exhaust ports (9), (10) through the peripheral wall, the longitudinal axis of the admission port and the longitudinal axis of a fuel injection nozzle (14) lie on a common axis (15) which when the piston is located with a corner in the region of the shorter axis of the housing between the admission and exhaust ports is not contacted by a piston flank (16). By this means fuel injected through the nozzle passes transversely through the suction chamber (20) to mix efficiently with the air flowing in the opposite direction without interruption by the piston.
Patent GB-844354-A (GB)
Title: Improvements in and relating to cutters for severing adhesive tape from a roll of tape
IPC: B65H35/00
Filed: 1958-08-07
Abstract: 844,354. Tape dispensers. GELDER F. VAN, Aug. 7, 1958 [Aug. 19, 1957], No. 25338/58. Class 18. A cutter for a roll of adhesive tape comprises a blade with a tapered cutting edge 1, a slot 2 of which the wall nearest the cutting edge is inclined there - towards and through which the tape 4 is threaded, and an aperture 3 through which a finger may be inserted to detach the free end of the tape from the blade. In various modifications, the aperture is replaced by notches at each or one side of the blade; the cutting edge 1 may be bent out of the plane of the blade, or the slot 2 may be located in a protuberance at the opposite end of the blade.
Patent GB-1469458-A (GB)
Title: Automatic emergency valves
IPC: F16K11/07
Filed: 1974-06-07
Abstract: 1469458 Valves ZAHNRADFABRIK FRIEDRICHSHAFEN AG 7 June 1974 [8 June 1973] 25339/74 Heading F2V An automatic emergency valve for hydraulic systems, especially for hydraulic steering mechanisms of motor vehicles, comprises a control piston 3, Fig. 1, spring-biased to the neutral position shown in a housing 1 having connections 6, 11, 13, 14 for a main pump 7, reserve pump 12, consumer 8 and a tank 15 respectively. A chamber 4 at one end of the piston is communicated with the main pump connection 6 whereas a chamber 5 at the other end of the piston contains the biasing spring 10 and is communicated with the consumer. Moreover the chambers 4, 5 are communicated with one another via an axial bore 19 and throttle 22 in the piston. Thus, in use, the piston is initially in its neutral position shown wherein the small initial delivery from the main pump passes to the consumer via the axial bore 19, throttle 22 and non-return valve 23, and the delivery from the reserve pump passes to the consumer via control edges B1 and non-return valve 24. However, the increasing delivery from the main pump increases the pressure differential between the chambers 4, 5 so that the piston moves leftwards. Thus the control edges C1 open and the control edges B1 close causing the reserve pump delivery to be returned to the tank. Further piston movement opens the control edges A1 to provide an additional flow path between the main pump and consumer via non-return valve 24. However subsequent fall in main pump delivery results in the reserve pump being reconnected with the consumer via the non-return valve 24. In an alternative embodiment, Fig. 2 (not shown), the axial bore in the piston is instead communicated with a peripheral groove (25) in the piston via a radial throttle (122), and the groove (25) is communicated with the consumer (108) and the spring-containing chamber (105) via further control edges (D2) after a small leftward movement of the piston from its neutral position.
Patent GB-600173-A (GB)
Title: Improvements in or relating to glazing bars
IPC: E04D3/08
Filed: 1945-09-29
Abstract: 600,173. Glazing bars. HOWARD, W. F. Sept. 29,1945, No. 25351. [Class 20(iii)] A glazing bar is engaged by a cover member formed by a channel-shaped extended bar having a longitudinal web or webs integral with the channel wall and engaging the head of the glazing bar or parts thereon. A cover bar 4 has a slotted cross web 6 with enlarged openings 7 at intervals through which may pass headed studs 3 arranged in a groove 9 in the head 1 of a glazing bar 2. The cover bar is slid longitudinally to lock it in position in which it is held by end clips. In a form, Fig. 2, in which lateral movement of the cover bar secures it in position, the headed end of a web 14 engages under the T-shaped head of the glazing bar 13 the cover being locked by screwed pins 16.
Patent GB-578504-A (GB)
Title: Improvements in the production of cellulose esters
IPC: C08B3/18
Filed: 1944-12-18
Abstract: A mixed organic ester of cellulose is obtained by subjecting cellulose to the action of an esterification medium comprising two different carboxylic acids, the anhydride of one of these acids, and an esterification catalyst, until esterification is substantially complete, then incorporating in the medium the anhydride of the other acid and an additional amount of catalyst and completing the esterification.  The cellulose may be cotton, cotton linters, wood pulp, regenerated cellulose, or cellulose from grass, straw, bagasse, or other waste material.  The catalyst may be perchloric acid, sulphuric acid, a mixture of hydrochloric acid and zinc chloride, or other mineral acid catalyst.  The ester may be ripened by incorporating water with the solution in an amount in excess of that required to destroy residual anhydride and allowing the solution to stand until the required reduction in ester content has been effected.  Prior to ripening some or all of the catalyst may be rendered inactive, e.g. by adding hydrated magnesium acetate, zinc acetate, aluminium acetate, aluminium chloride or calcium acetate. When sulphuric acid has been used as esterification catalyst, any sulphuric acid combined with the cellulose may be removed by adding water and allowing the solution to stand, if desired at a temperature lower than that at which hydrolysis of the organic acid radicals present in the ester is produced, e.g. below 25 DEG  C.  The cellulose ester is precipitated by mixing the solution with a large amount of water.  The clarity of the product is improved if acetone, dioxane, methyl acetate, methyl or ethyl alcohol, or other inert solvent for the ester is added to the solution prior to precipitation.  Cellulose acetate-butyrates, or propionate-butyrates may be obtained.  In the production of cellulose acetate-butyrate, the cellulose may be pretreated with a mixture of acetic and butyric acids for several hours at 12-60 DEG  C.  The mixture is then cooled and butyric anhydride and an esterification catalyst are added. Esterification is preferably carried out so that the temperature does not rise above 30 DEG  C.  When the esterification is substantially complete, a mixture of acetic anhydride and additional catalyst is added.  The mixture is allowed to stand until a clear solution is obtained.
Patent GB-638931-A (GB)
Title: Improvements relating to ventilating apparatus
IPC: F24F13/065
Filed: 1947-09-18
Abstract: 638,931. Ventilators. NORVENT, Ltd., and HICKMOTT, B. W. R. Sept. 18, 1947, No. 25463. [Class 137] A tubular member or spigot 4 to be used in securing a ventilator unit admitting air from an air trunk to a room has an outwardly directed flange 4a, the return edge 4b of which beds down on the wall 5, providing a flat metal surface on which the flange of the unit is located ; an air tight joint is thus formed clear of the flat surface of the wall or ceiling. The spigot 4 fits over the socket 1 of the unit. The unit flange 2 and the spigot flange 4a are bolted to the wall 5. A ring of rubber or other material is located in a recess 3 in the unit flange to form an air-tight packing between flanges 2, 4a. When the wall is directly against the air duct 9 the tubular portion of the spigot may be dispensed with, the socket of the unit being held by a plate with a flange and secured as described above. Specification 606,723 is referred to.
Patent GB-738833-A (GB)
Title: Improvements in or relating to ladies' stockings
IPC: D04B9/46
Filed: 1952-10-11
Abstract: 738,833. Knitting. CHARNOS HOSIERY, Ltd., and NOSKWITH, R. Oct. 12, 1953 [Oct. 11, 1952], No. 25517/52. Class 74 (2). A round heel of a fully-fashioned stocking is knitted on a straight bar machine such that the loop transfer marks J, K caused by' the innermost transfer point during widening ocucr in substantially a single wale. This is achieved by back racking the transfer points after each transfer operation so that the number of loops transferred at each widening operation is gradually increased. As the heel is further produced the back racking may be increased so that the transfer marks extend inwardly towards the centre line of the blank. In addition, the splicing carrier stops are controlled so that the inner edges of the high splice and part of the spliced heel of the blank extend along a single wale C, D. Thereafter the stops may be adjusted so that the edges of the spliced area extend inwardly towards the centre line of the blank. The transfer marks are arranged to occur just within the edges of the spliced areas.
Patent GB-1341514-A (GB)
IPC: A01N25/28
Filed: 1972-05-31
Abstract: 1341514 Microcapsules containing a parathion PENNWALT CORP 31 May 1972 [3 June 1971] 25522/72 Heading A5E Microcapsules contain methyl parathion or ethyl parathion within a skin of cross-linked polyamide-polyurea.
Patent GB-632164-A (GB)
Title: Method for the manufacture of aluminous cements, with special reference to white aluminous cement
IPC: C04B7/32
Filed: 1946-08-26
Abstract: Aluminous cements are prepared from raw materials containing aluminium such as clay, shale, ashes, metallurgical slags and bauxites by firing with lime or limestone to produce a soluble calcium aluminate which is leached out with water or a weak solution of a salt, preferably an alkaline salt such as sodium carbonate, separating the solution from the insoluble residue and precipitating the aluminium, by injection of carbon dioxide or other methods, as a mixture of hydrated alumina and calcium carbonate or of hydrated alumina, lime and calcium carbonate, or as hydrated calcium aluminate; to this precipitate are added materials such as lime and aluminium silicate to bring the composition to that required for the final cement, and the resulting mixture burned to give a product which after grinding gives the desired cement.  Particulars are given of the relationship between the quantities of lime required for the initial firing and the composition of the raw material.  White aluminous cement may be prepared by this process from aluminous raw material free of iron, particularly bauxite.  The residue after leaching out the calcium aluminate may be utilised to manufacture cements of the Portland cement type by making suitable additions to get the desired composition, and burning in a normal cement kiln.