baber/WOPTO huggingface dataset:
Patent GB-649690-A (GB)
Title: Improvements in electronic seaming machines
IPC: B31B50/66
Filed: 1948-10-13
Abstract: 649,690. Seaming non-metallic sheet material. SINGER MANUFACTURING CO. Oct. 13, 1948, No. 26638. Convention date, July 3. [Class 42 (i)] An electronic seaming machine for dielectric sheet material comprises a work support, means including an electrode movable toward and from the work support for establishing a very high-frequency electric field, a work thickness detecting member disposed for engagement with work in the region of said field, relatively movable members co-operating with one another to limit the movement of the electrode toward the work support, one of which members is variably positioned by the detecting member so that the said electrode movement is limited in accordance with variations in the thickness of the work, and adjustable means for modifying the effective action of said relatively movable members. As shown, in a machine modified from that described in Specification 603,412, the electrode bar 48 carrying the upper electrode 80, Fig. 2, is pressed downwardly by a spring 49 and is reciprocated by an eccentric 77, Fig. 3, on a main shaft 15, engaging a roller 59 mounted on a bracket 57 carried by a nut 55 adjustably secured to the top of bar 48. The downward movement of electrode bar 48 is limited by engagement of a nose or cam arm 95 on bracket 57 with an arm 94 of a bell-crank lever 88; the position of arm 94 is varied automatically according to the thickness of the work by engagement of the other arm 87 of lever 88 with an extension 86 on the presser bar 41 carrying the upper feed roller 43. Lever 88 is pivoted in a block 91 adjustably secured to the machine frame by a screw 92 and slot 93. Prior to commencing seaming, block 91 and nut 55 are adjusted to give the desired minimum spacing of the electrodes, and the desired dwell of the upper electrode in its lowest position, for the thinnest material to be treated.
Patent GB-787010-A (GB)
Title: Improvements in or relating to furnace recuperators or like recuperative heat exchangers
IPC: F28D7/02
Filed: 1956-08-31
Abstract: 787,010. Heating air for comubustion; tubular heat exchange elements. WELLMAN SMITH OWEN ENGINEERING CORPORATION, Ltd., and MC LAY, G. S. Aug. 31, 1956, No. 26710/56. Classes 64(1) and 64(3) An element for a furnace recuperator or like recuperative heat exchanger comprises three vertical, annularly spaced concentric tubes 21, 22, 23, the medial and inner tubes 22, 23 respectively being metallic and the outer tube 21 being of refractory material, the inner tube 23 being open at both ends, the medial tube 22 being open at its upper end and closed at its lower end e.g. by a plate 26, the open bottom end of the inner tube 23 being axially spaced from the closed bottom end of the tube 22, and the element being mounted so that all three tubes may expand or contract independently of each other and so that the metallic tubes are not directly exposed to the heating medium. In the recuperator element shown, a core member 39 is disposed within the inner tube 23 and forms therewith an annular air passage 40 communicating with a further annular air passage 25 formed between the medial and inner tubes 22, 23. The refractory tube 21 is made in a plurality of sections retained in axial alignment with one another and concentrically with the metallic tubes by metal rings 28 which also serve to hold the parts of the tube together in the event of cracking under extreme conditions. The space 24 between the refractory tube 21 and medial tube 22 may be charged with an inert gas. The tube 21 and core 39 are supported by the plate 26 which is welded to the medial tube 22 and may be protected by refractory material. A helical baffle the pitch of which may increase in the direction of air flow, may be provided in the passage 25 (Fig. 2, not shown). The cross-sectional area of the annular passages 25, 40 may decrease in the direction of air flow therethrough to retain or increase the the air velocity. This may be effected by changing the diameter of the tube 23 and/ or the core 39 either gradually or in stages. Hot gases, e.g. from a furnace, flowing through the recuperator chamber 11 impinge on the outer surface of the refractory tube 21 and heat is radiated from this tube across the space 24 to the metallic tubes therby heating the air flowing from an inlet conduit 17 through annular air heating passages 25, 40 to the outlet conduit 19 leading e.g. to a furnace burner. The tubes 22, 23 may be made of heat resisting steel and have oxidized inner and outer surfaces. The tube 22 may have its outer surface knurled.
Patent GB-206156-A (GB)
Title: An advertising or display device
IPC: G09F13/24
Filed: 1923-10-25
Abstract: 206,156. Kempinski, H. Oct. 26, 1922, [Convention date]. Moving liquids, utilizing.-A liquid is stored in a vessel a and forced by a pump e into a bottle n or the equivalent from which it is discharged along the pipe m through an annular opening between the pipe and the neck of the receptacle n. The pump is driven from an electric motor d.
Patent GB-731294-A (GB)
Title: New linear polyamides
IPC: C08G69/24
Filed: 1952-10-24
Abstract: Pyrrolidone is polymerized by heating at 75-180 DEG  C. in presence of a catalyst to produce polymers having the formula <FORM:0731294/IV (a)/1> The effective catalyst appears to be sodium, potassium or lithium pyrrolidone since the reaction is catalysed by addition of sodium, potassium or lithium or a hydroxide, oxide or easily decomposable salt, e.g. carbonate of one of these metals.  Alkyls or aryls of these metals, e.g. butyl lithium or sodium phenyl, or sodium amide may also be used.  In example I, pyrrolidone is heated in vacuo with potassium hydroxide pellets, water being removed by distillation.  Heating is continued at 160 DEG  C. for six hours in an inert atmosphere.  Unchanged pyrrolidone is removed by distillation and the residue worked free from catalyst and water-soluble impurities, and dried.  It may be further purified by solution in 6N HCl, treatment with decolourizing carbon and re-precipitation with ammonia.  Examples II-VI are similar employing sodium hydroxide, potassium carbonate, sodium carbonate, potassium hydroxide or metallic sodium as catalyst.  In Example VII pyrrolidone is first heated with potassium hydroxide pellets and the mixture then heated with more dry pyrrolidone. The products are thermoplastic, suitable for moulding or for extrusion as fibres or filaments, and may be compounded with conventional additives, e.g. fillers, plasticizers, pigments or dyes.
Patent GB-691345-A (GB)
Title: Improvements in or relating to electrical apparatus for production of engraved printing surfaces
IPC: B41C1/04
Filed: 1949-07-12
Abstract: 691,345. Copying by scanning. SWIFT, C. W., and PHILLIPS, E. A. July 12, 1949, No. 26760/51. Divided out of 691,295. Drawings to Specifications. Class 40 (iii). The subject-matter is identical with that included in Specification 691,295, but the claims relate to a method of, and apparatus for, producing an engraved printing surface from a subject to be reproduced, in which an engraving tool is moved synchronously with a scanning photo-electric cell traversing the subject in a series of parallel lines and in which the tool is oscillated at a screen frequency related to the relative speed between the tool and the surface and at an amplitude insufficient to bring the tool into contact with the surface to be engraved and in which there is superimposed on this movement an additional movement which is a function of the output of the photo-electric cell to control the depth of engraving so that the surface is engraved in a regular grille pattern.
Patent GB-241951-A (GB)
Title: Improvements in kinematograph apparatus with continuous feed
IPC: G03B41/08
Filed: 1925-10-26
Abstract: 241,951. Continsouza, V., and Combes, M. B. Oct. 27, 1924, [Convention date]. Kinematograph apparatus.-In continuous-feed apparatus wherein optical compensation is effected by lenses around the periphery of a rotating disc, the lenses are mounted on members which are moved so as to cause each lens to pass through the projection beam in a rectilinear path parallel to the axis of the film and with a uniform speed. As shown, the disc 1 is grooved or slotted to receive sliders 8 which contact at their inner ends with a fixed cam 9. Each lens 12 is carried by a lever 11 pivotally mounted on a pin 10 at the outer end of one of the sliders 8, and the tails of the leavers 11 contact with a fixed cam 13. The cams are shaped to produce the required movement, and springs 14 keep the members in contact with the cams.
Patent GB-210376-A (GB)
Title: An improved method of and apparatus for separating out and removing matter suspendedin a fluid
IPC: B01D29/46
Filed: 1922-07-19
Abstract: 210,376. Shaw, H. S. Hele-. July 19, 1922. Filters; separating by gravity. - Suspended matter is separated from a fluid by causing the fluid to pass between sheets or plates of paper which is substantially impermeable to the fluid at any rate in the direction of flow. A pack of sheets may be arranged between pressure heads or end plates the sheets being perforated so that a continuous passage is formed into which the fluid is forced so that it has to pass between the sheets and escapes at the outer periphery. The paper may have a rough surface or channels may be formed thereon by printing or embossing. Screws or hydraulic pressure may be used to regulate the distances between the sheets. Conical sheets may be used. The filters may be constructed as described in Specification 210,101. One of the Provisional Specifications describes the use of a pack of sheets for separating solid matter from a liquid as it flows with stream line motion between the sheets. Alternate sheets may be cut like stencils to provide the necessary channels. The solid matter is deposited in pockets from which it can be removed through holes in the plain sheets.
Patent GB-362861-A (GB)
Title: Improvements in the recovery of values from cyanide solutions
IPC: C01C3/08
Filed: 1930-09-08
Abstract: Solutions obtained in the treatment of ores by the cyanide process to extract their metal values, are treated with zinc sulphate while being maintained alkaline, a zinc cyanide precipitate and a cyanide free solution resulting.  Alternatively, the cyanide solutions may be treated in the usual manner for the recovery of metal values, the residual cyanide liquors being treated as described above.  Valuable metals, such as gold and part of the silver may be recovered from the cyanide free solutions by precipitation on metallic zinc preferably after the solutions have been rendered acid.  The zinc cyanide precipitate which may contain the remainder of the silver and all the copper may be treated with an acid such as sulphuric acid to recover hydrocyanic acid and zinc sulphate for re-use, the valuable metals being recovered from the insoluble residue.  In processes where the cyanide liquor is used cyclically, a portion of the liquor may be diverted and decyanided by the addition of zinc sulphate preferably at a point in the cycle after the normal precipitation of the gold and silver by the aid of zinc or the like, the cyanide free liquor after removal of its metal values by precipitation on metallic zinc being returned to the cycle if desired.ALSO:Solutions obtained in the treatment of ores by the cyanide process to extract their metal values, are treated with zinc sulphate while being maintained alkaline, a zinc cyanide precipitate and a cyanide free solution resulting.  Alternatively, the cyanide solutions may be treated in the usual manner for the recovery of metal values, the residual cyanide liquors being treated as described above.  Valuable metals, such as gold and part of the silver may be recovered from the cyanide free solutions by precipitation on metallic zinc preferably after the solutions have been rendered acid.  In processes where the cyanide liquor is used cyclically, a portion of the liquor may be diverted and decyanided by the addition of zinc sulphate preferably at a point in the cycle after the normal precipitation of the gold and silver by the aid of zinc or the like, the cyanide free liquor after removal of its metal values by precipitation on metallic zinc being returned to the cycle if desired.
Patent GB-1476478-A (GB)
Title: Electrical contact materials
IPC: C22C32/00
Filed: 1974-06-18
Abstract: 1476478 Internally oxidized Ag base alloy CHUGAI DENKI KOGYO KK 18 June 1974 [20 July 1973 26 Nov 1973] 26904/74 Heading C7A An internally oxidized electrical contact material of composition: - In 1-6% Sn 5-10% Ag plus imps balance or Ag plus impurities balance. The internally oxidized alloy may be produced by casting the alloy into plate form and subjecting the cast material to an oxidizing atmosphere at a pressure of at least 1À5 atmospheres and at a temperature of 650-700‹C for 48 to 72 hours.
Patent GB-1397699-A (GB)
Title: Process for the preparation of porous cermets and metal compositions
IPC: C04B38/00
Filed: 1973-06-05
Abstract: 1397699 Sintered granulated metals and cermets COMMISSARIAT A L'ENERGIE ATOMIQUE 5 June 1973 [5 June 1972] 26908/73 Addition to 1215343 Heading C7D Sintered porous cermets and metals are produced by compacting at 5-9 metric tons/sq. cm. the cermet or metal powder without a binder, crushing the compact and screening to the required size. The granules are then compacted at 0.2-5 metric tons/sq. cm. and sintered at 1300- 2000C. The powders may be Mo, W, Ta, optionally with U02 e.g. 60% Mo-40% UO 2  or Ag, Cu, Fe, Ni.
Patent GB-533047-A (GB)
Title: Improvements in or relating to engines of the reciprocating piston type
IPC: F01B9/06
Filed: 1939-10-02
Abstract: 533,047. Driving-gear. WILLIAMS, W. A. Oct. 2, 1939, No. 27033. [Class 7 (ii)] [Also in Group XXVI] Driving gear in which the crank pin engages an oblique slot or surface on the crosshead has connecting means between the crosshead and a plurality of pistons allowing relative lateral movement and means for restraining lateral movement of the crosshead. In a 4- cylinder engine each pair of pistons 35 is connected by forked links 33 to a crosshead comprising a square plate 21 having a 45-degree slot 20 engaged by a respective one of two crankpins 17, 18, on cranks at 180 degrees. The vertical sides of the crossheads are each engaged by two guide rollers 28 having flanges 30 embracing the crossheads. The engine operates on the four-stroke cycle, and the cycles in the different cylinders are so staggered that there is driving engagement of the crank-pins with the upper edges of the slots only. Specification 457,697 is referred to.
Patent GB-407741-A (GB)
Title: Improvements in or relating to apparatus for the reproduction of sound recorded on a disc
IPC: G11B3/30
Filed: 1932-09-29
Abstract: 407,741. Associated working of gramophones with kinematographs. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Hibbard, F. H. ; 3, Valley Road, Mountain Lakes, New Jersey, U.S.A.) Sept. 29, 1932, No. 27058. Convention date, Oct. 29, 1931. [Class 40 (ii).] Comprises a gramophone, especially adapted for use in combination with a motion-picture projector, wherein the electric pick-up carrier arm is pivoted on one end of a supporting arm whose other end is pivoted at a point adjacent the turntable so that the supporting arm can be swung outwardly to bring the pick-up into co-operation with a portion of the record disc remote from the stray field of an electric driving motor. A motion-picture projector 11, Fig. 1, and a gramophone turntable 16 are driven in synchronism by an electric motor 13. The pick-up 23 is mounted on a channel-section supporting arm 24 pivoted at 25 on a member 26 which is journalled in an arm 27. The arm 27 is pivoted in a bearing 28 so that, during transport, the arms may be folded into the position shown and locked by means of a screw 29 and locking device 30. To place the pick-up in an operative position remote from the stray field of the motor, the arm 27 is swung outwardly through 180‹ and the locking device 30 released to free the arm 24. The locking device 30 comprises a latch member 32 having lugs 33, 34, 35, Fig. 2, and when the arms 24, 27 are in their folded position shown, the lug 33 engages the upper surface of a bracket 38 so that the arm 24 is held against vertical movement while the lugs 34, 35 engage either side of the arm 24 to prevent lateral movement. The arm 24 is released from contact with the lug 33 by turning a lever 36, after which a spring 39 restores the lug 33 to its original position to prevent the pick-up being placed upon the record disc at the position near the bearing 28. The bearing for the arm 24 is contained in a cylindrical portion 40 which is lined with resilient material to absorb vibrations.
Patent GB-1242322-A (GB)
Title: Tilt plate fastener
IPC: E05C19/00
Filed: 1969-05-29
Abstract: 1,242,322. Releasable fastenings. W. H. KOZLOWSKE and P. C. TABOR [trading as METEOR RESEARCH Ltd]. 29 May, 1969, No. 27214/69. Headings E2A and E2B. A tilt-plate fastener has a support 12, a fulcrum abutment 38 carried by said support, an apertured tilt plate 30, and spring means 34 engaging said plate in a region laterally displaced from said abutment toward the aperture in said tilt plate and urging said plate to engage said abutment and tilt thereon to frictionally bind a pin 4 in said aperture, said abutment being movable with respect to said support to thereby permit said plate to move to a non-tilted position to release the pin. In the construction shown a plurality of tilt plates are used to dispose one below the other with the topmost one in engagement with the fulcrum abutment and the support and the spring in engagement with the bottommost one to press the plates together. The abutment 38 is provided by a shaft 40 which is cut away over a length sufficient to extend the entire width of the tilt plates and so that the member has a semicylindrical cross sectional shape with its flat surface passing substantially through the axis of the shaft; the plates are in the non tilted position when the flat surface is in engagement with the topmost plate and they are in the tilted position when the shaft is rotated through 90‹ from such position. The shaft 40 can be connected to a cylinder lock mechanism and can be used to fasten a boot lid in place on a vehicle.
Patent GB-644074-A (GB)
Title: Improvements in elastic fluid turbines
IPC: F01D11/02
Filed: 1947-10-10
Abstract: 644,074. Turbine blades. AKTIEBOLAGET LJUNGSTROMS ANGTURBIN. Oct. 10, 1947, No. 27260. Convention date, Nov. 26, 1946. [Class 110(iii)] To utilize the energy of the leakage fluid from a preceding blade ring, the blades of a turbine blade ring are formed at the end zones either with a profile which is adapted to the inlet direction of the leakage fluid or with special channels in the end walls of the fluid passage which open into the main fluid passage and have inlett openings which face in the inlet direction of the leakage fluid. As the leakage fluid does not pass through the blade ring 22, Fig. 2, it is not deflected and, as shown by the arrows 33b, Fig. 3, enters the following blade ring 16 at an angle different from that of the main fluid flow as shown by the arrow 36. To prevent eddy losses resulting from the leakage fluid hitting the backs of the blades 16, the tips of the blades may be cut back as at 46. This operation also alters the blade profile and allows the leakage fluid to flow smoothly on to the blade. For stress reasons it is not possible to cut back the blade at the portion adjacent the root, in this case channels 50 leading into the main fluid passage are cut in the roots in such a manner that they receive the leakage fluid in a smooth manner and guide it into the direction of the main fluid flow leaving the blade ring before it reaches the inner periphery of the blades 22. In a modification, the blades are given a profile in the leakage end zones which differs from the normal profile and the two profiles are joined by suitably curved surfaces. The application to a radial flow turbine is also described.
Patent GB-1461310-A (GB)
Title: Burner means for furnaces
IPC: F23D14/00
Filed: 1974-02-26
Abstract: 1461310 Burners BICKLEY FURNACES Inc 26 Feb 1974 [10 April 1973] 27262/76 Divided out of 1461309 Heading F4T The subject matter of this specification is substantially the same as that described in the parent, but the claims are concerned with a furnace burner assembly having a combustion chamber provided with an aligned fuel nozzle at one end and arranged to direct a high velocity combustion products gas stream from its other end, wherein means (70), Fig. 5 (not shown), are provided for introducing dilution air into the combustion products gas stream along at least one pair of jet paths oppositely inclined at an acute angle to the flow path of said gas stream so that the flows of dilution air are directed towards said flow path in opposed relation and along the direction of flow of said gas stream.
Patent GB-358230-A (GB)
Title: Improvements in the manufacture of piperidine pentamethylenedithiocarbamate
IPC: C07D295/21
Filed: 1930-09-12
Abstract: Piperidine-pentamethylenedithiocarbamate is prepared from piperidine and carbon disulphide in a medium which is a solvent for the reactants and the by-products but which is substantially a nonsolvent for piperidine - pentamethylenedithiocarbamate. Suitable solvents are aliphatic and alicyclic hydrocarbons such as petrol; the solvent may be recovered by distillation or washed with dilute aqueous acids such as hydrochloric or sulphuric acids and dried over calcium chloride or concentrated sulphuric acid. Technical piperidine can be used.  In an example technical piperidine is dissolved in petrol and carbon disulphide added giving a precipitate of the piperidine salt.
Patent GB-1345356-A (GB)
Title: Multi-storey residential building construction
IPC: E04H1/04
Filed: 1971-04-19
Abstract: 1345356 Multi-storey buildings O SELVAAG 19 April 1971 [16 April 1970] 27305/71 Heading E1A A multi-storey building is terraced on two sides and provided with a central vertical core for all service piping. The terraces are flanked by railings serving to house pot plants and the building is provided with refuse removal means A, a staircase D, drainage plant 13, a garage G and underground levels 1u, 2u, 3u.
Patent GB-225034-A (GB)
Title: Improved exercising apparatus
IPC: A63B22/02
Filed: 1923-11-01
Abstract: 225,034. Scouler, W., Black, H., and Malloch, J. Nov. 1, 1923. Exercising-apparatus.-In exercising-apparatus of the type comprising a series of rollers 2 forming an inclined, receding track and having uprights 3 to carry hand-grips for the operator. one or more endless bands 9 are passed over the end rollers so as to be driven by contact with the feet. The uprights 3, which may be secured to the frame 1 or to the ground, may be rotatable to allow the hand-grips 7 to be adjusted, or they may be connected by a cross-bar. The uprights may also be curved to give more room for the operator's knees.
Patent GB-760587-A (GB)
Title: Improvements relating to x-ray image intensification
IPC: H01J31/50
Filed: 1953-10-06
Abstract: 760,587. Electroluminescence. GENERAL ELECTRIC CO. Oct. 6, 1953 [Oct. 10, 1953], No. 27429/53. Class 39(1). An X-ray image intensifier comprises a plate 1 of glass or other transparent material with a transparent conducting coating 2, e.g. of tin oxide, a thin layer 3 of electroluminescent material bonded with a resinous dielectric material, and a layer 4 of a material the impedance of which varies with the incident X-ray intensity e.g. closely-packed crystalline cadmium sulphide backed by a thin aluminium layer 5 and a sheet 6 of soft elastomer. The pressure sheet 6 is itself backed by a stiff sheet of non-conducting material e.g. glass or a hard resin. The electrical connections 9, 10 to sheet 5 and coating 2 and the screen assembly are held together in a frame 8. Specification 724,977 is referred to.