GB908062A - An improved method of processing metal bars - Google Patents

An improved method of processing metal bars

Info

Publication number
GB908062A
GB908062A GB33675/60A GB3367560A GB908062A GB 908062 A GB908062 A GB 908062A GB 33675/60 A GB33675/60 A GB 33675/60A GB 3367560 A GB3367560 A GB 3367560A GB 908062 A GB908062 A GB 908062A
Authority
GB
United Kingdom
Prior art keywords
tool
work
cut
diffusion
oct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB33675/60A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lasalle Steel Co
Original Assignee
Lasalle Steel Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lasalle Steel Co filed Critical Lasalle Steel Co
Publication of GB908062A publication Critical patent/GB908062A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B23D79/12—Machines or devices for peeling bars or tubes making use of cutting bits arranged around the workpiece, otherwise than by turning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
    • B21C43/02—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D1/00—Planing or slotting machines cutting by relative movement of the tool and workpiece in a horizontal straight line only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/081—Inorganic acids or salts thereof containing halogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/082—Inorganic acids or salts thereof containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
    • C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/06—Perfluorinated compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/22—Metal working with essential removal of material, e.g. cutting, grinding or drilling
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/241—Manufacturing joint-less pipes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/242—Hot working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/243—Cold working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/245—Soft metals, e.g. aluminum
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/246—Iron or steel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/247—Stainless steel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/026—Method or apparatus with machining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49995—Shaping one-piece blank by removing material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/50082—Process
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/50328—Means for shaving by blade spanning work surface
    • Y10T409/503608—Circumferential surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/97—Miscellaneous

Abstract

908,062. Broaching; making rods, tubes and wires. SALLE STEEL CO. Oct. 20, 1958 [Oct. 22, 1957], No. 33675/60. Divided out of 908,061. Classes 83 (2) and 83 (3). In a method of removing the surface of an elongate bar &c. by a continuous cold-finishing operation by a shaving tool, the surface of the work ahead of the tool is hardened by diffusion to a depth at least equal to the depth of cut. The tool may be made of H.S. steel, a cemented carbide, or a ceramic. It may cut a polygonal shape or a keyway in the outer or inner surface of the work. In the latter case, the tool is hollow for the disposal of chips. The diffusion process may utilize carbon, nickel, chromium or tungsten, and a gas or liquid may be introduced adjacent the cutting edge to react with the freshly cut metal to harden it by diffusion transfer. The work may be subsequently drawn, extruded or rolled. A lubricant may be supplied between the shaving tool and the reduction die. The work may be aligned with the tool by a roller guide, a slide or a die. Specifications 908,063, 908,064 and 908,065 also are referred to.
GB33675/60A 1957-10-22 1958-10-20 An improved method of processing metal bars Expired GB908062A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US691657A US3157093A (en) 1957-10-22 1957-10-22 Method of removing metal by shaving

Publications (1)

Publication Number Publication Date
GB908062A true GB908062A (en) 1962-10-17

Family

ID=24777424

Family Applications (3)

Application Number Title Priority Date Filing Date
GB33675/60A Expired GB908062A (en) 1957-10-22 1958-10-20 An improved method of processing metal bars
GB33677/60A Expired GB908064A (en) 1957-10-22 1958-10-20 An improved method of processing metal bars
GB33678/60A Expired GB908065A (en) 1957-10-22 1958-10-20 An improved method of processing metal bars

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB33677/60A Expired GB908064A (en) 1957-10-22 1958-10-20 An improved method of processing metal bars
GB33678/60A Expired GB908065A (en) 1957-10-22 1958-10-20 An improved method of processing metal bars

Country Status (3)

Country Link
US (1) US3157093A (en)
DE (1) DE1502949A1 (en)
GB (3) GB908062A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277557A (en) * 1962-11-21 1966-10-11 Nat Res Corp Production of nb3sn diffusion layers
FR1425973A (en) * 1964-03-16 1966-01-24 Process for the preparation for drawing of semi-finished materials, for example wire, by sharpening the end
US3430477A (en) * 1967-06-27 1969-03-04 Lasalle Steel Co Method and means for surface finishing of steel
US3750438A (en) * 1970-10-30 1973-08-07 D Elman Process for finishing steel bars
US3760488A (en) * 1972-03-23 1973-09-25 Lasalle Steel Co Process for surface finishing of metals
GB1421778A (en) * 1972-12-29 1976-01-21 British Steel Corp Wire processing machine
FR2267841B1 (en) * 1974-04-16 1976-12-17 Cegedur
SU977139A2 (en) * 1980-04-25 1982-11-30 Предприятие П/Я Р-6543 Apparatus for combination apparatus for working of cylindrical surfaces
US4799300A (en) * 1981-06-15 1989-01-24 Phillips Paul M Apparatus for shaving elongate metal stock
US4611748A (en) * 1981-11-23 1986-09-16 Olin Corporation Process and apparatus for fabricating optical fiber cables
US4460532A (en) * 1982-05-17 1984-07-17 Cornell Richard R Method for making moldings using a fixed shaping die
AT395835B (en) * 1990-03-29 1993-03-25 Weingartner Maschbau Gmbh METHOD FOR PRODUCING A PARALLEL-AXIS ROTARY PISTON MACHINE
JP3152115B2 (en) * 1995-08-01 2001-04-03 トヨタ自動車株式会社 Bolt ironing method and apparatus
US20050227772A1 (en) * 2004-04-13 2005-10-13 Edward Kletecka Powdered metal multi-lobular tooling and method of fabrication
JP4862983B2 (en) * 2005-03-22 2012-01-25 住友電気工業株式会社 Magnesium welding wire manufacturing method
US20090286083A1 (en) * 2008-05-13 2009-11-19 Hitachi Cable, Ltd. Copper wire for a magnet wire, magnet wire using same, and method for fabricating copper wire for a magnet wire
CN102941443A (en) * 2012-11-05 2013-02-27 宁波镇明转轴有限公司 Manufacture method of drive screw
CN102921762A (en) * 2012-11-26 2013-02-13 扬州锦江有色金属有限公司 Tool of lead alloy rod wire forming device
JP2014161933A (en) * 2013-02-22 2014-09-08 Kobe Steel Ltd Shaving tool and shaving method for sheet wire using the same

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1156892A (en) * 1915-06-19 1915-10-19 Charles Alphonse Clement De La Poix De Freminville Method of machining metals and other very hard and highly-resilient materials.
US1292494A (en) * 1917-06-11 1919-01-28 William A Lorenz Method of cutting metals.
DE426029C (en) * 1924-10-26 1926-03-04 Jakob Brocker Method of drawing rods and wires
US1703232A (en) * 1926-08-18 1929-02-26 Emsco Derrick & Equip Co Method of making hard-shell pump-rod couplings and the like
US1907897A (en) * 1930-12-17 1933-05-09 Hudson Motor Car Co Method of making spline shafts
BE432946A (en) * 1938-03-04
US2233928A (en) * 1939-02-16 1941-03-04 Gen Electric Wire shaving process and fixture
US2267342A (en) * 1939-04-07 1941-12-23 Cleveland Graphite Bronze Co Method of making composite strip
US2392481A (en) * 1941-12-26 1946-01-08 Detroit Broach Company Machine tool cutter
US2476151A (en) * 1943-06-16 1949-07-12 Goodrich Co B F Method of making brake drums
US2394381A (en) * 1944-01-21 1946-02-05 Eaton Mfg Co Wire finishing apparatus
US2679680A (en) * 1947-02-01 1954-06-01 Allegheny Ludlum Steel Wire-coursing die
US2670528A (en) * 1950-06-21 1954-03-02 Paul E Brunberg Process of thermal regulation of work and tools
GB714860A (en) * 1951-10-19 1954-09-01 Ferranti Ltd Improvements relating to turning and planing machining processes
US2706238A (en) * 1952-01-31 1955-04-12 Goodrich Co B F Electrically heated knife
US2829430A (en) * 1953-02-20 1958-04-08 Midland Chemical Corp Cutting compounds
US2754581A (en) * 1954-01-21 1956-07-17 Rigidized Metals Corp Method of producing ornamental metallic sheets
US2831782A (en) * 1954-05-21 1958-04-22 Dow Chemical Co Lubricants for coating and working light metals
US2931263A (en) * 1956-10-11 1960-04-05 Carl E Johnson Method of cutting aluminum including the step of heating to a white heat

Also Published As

Publication number Publication date
GB908064A (en) 1962-10-17
GB908065A (en) 1962-10-17
US3157093A (en) 1964-11-17
DE1502949A1 (en) 1969-06-12

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