GB763972A - Improvements in or relating to flexible couplings for pipes - Google Patents

Improvements in or relating to flexible couplings for pipes

Info

Publication number
GB763972A
GB763972A GB2685853A GB2685853A GB763972A GB 763972 A GB763972 A GB 763972A GB 2685853 A GB2685853 A GB 2685853A GB 2685853 A GB2685853 A GB 2685853A GB 763972 A GB763972 A GB 763972A
Authority
GB
United Kingdom
Prior art keywords
layers
compound
mould
fabric
members
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
GB2685853A
Inventor
Thomas Gillett
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.)
Andre Rubber Co Ltd
Yarrow and Co Ltd
Original Assignee
Andre Rubber Co Ltd
Yarrow and Co Ltd
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 Andre Rubber Co Ltd, Yarrow and Co Ltd filed Critical Andre Rubber Co Ltd
Priority to GB2685853A priority Critical patent/GB763972A/en
Priority to FR1113116D priority patent/FR1113116A/en
Priority to DER15120A priority patent/DE1034058B/en
Priority to NL89088D priority patent/NL89088C/xx
Publication of GB763972A publication Critical patent/GB763972A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/02—Inflatable articles
    • B29D22/023—Air springs; Air bellows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/102—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using rigid mould parts specially adapted for moulding articles having an axis of symmetry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/20—Making multilayered or multicoloured articles
    • B29C43/203—Making multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • F16J3/041—Non-metallic bellows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
    • F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
    • F16L27/108—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with only one corrugation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
    • F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
    • F16L27/108—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with only one corrugation
    • F16L27/1085—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with only one corrugation the bellows being externally or internally reinforced
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
    • F16L51/024—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube non-metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C2043/3205—Particular pressure exerting means for making definite articles
    • B29C2043/3222—Particular pressure exerting means for making definite articles pressurized gas, e.g. air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/049—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using steam or damp
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2009/00—Use of rubber derived from conjugated dienes, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B29L2023/225—Insulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Joints Allowing Movement (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

763.972. Laminated materials. ANDRE RUBBER CO., Ltd., and YARROW & CO., Ltd. Sept. 30, 1954 [Sept. 30, 1953], No. 26858/53. Class 140. [Also in Group XXVIII] A resilient member 1, Fig. 7, having an outwardly-directed loop 2 flanked by inwardlydirected loops 3 and formed of synthetic rubber or other elastomeric compound reinforced by layers of textile fabric such as of nylon is formed in a diametrically-split mould 12 axiallydirected bias cut nylon fabric pieces of the shape shown in Fig. 11 being arranged in layers around the inner mould periphery with contiguous members of a layer butting or slightly overlapping and members of each layer covering the joints between members of the adjacent layer or layers. The nylon fabric pieces have been previously coated and impregnated with an uncured synthetic rubber compound, e.g. neoprene, as by clipping in a solution thereof and/or by friction-calendering therewith; alternatively a dough of the compound may be spread on the fabric. Layers of the compound may be inserted between some of the fabric layers, the inner and outer ones of which may also be faced with compound. Compression and curing of the member 1 is then effected by injecting steam under pressure into the mould, which has air vents 9. Mould end plates 11 may also be heated.
GB2685853A 1953-09-30 1953-09-30 Improvements in or relating to flexible couplings for pipes Expired GB763972A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2685853A GB763972A (en) 1953-09-30 1953-09-30 Improvements in or relating to flexible couplings for pipes
FR1113116D FR1113116A (en) 1953-09-30 1954-09-22 Improvements to flexible couplings for pipes
DER15120A DE1034058B (en) 1953-09-30 1954-09-29 Flexible coupling for pipes, especially for the cooling water lines of ship condensers
NL89088D NL89088C (en) 1953-09-30 1954-09-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2685853A GB763972A (en) 1953-09-30 1953-09-30 Improvements in or relating to flexible couplings for pipes

Publications (1)

Publication Number Publication Date
GB763972A true GB763972A (en) 1956-12-19

Family

ID=10250358

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2685853A Expired GB763972A (en) 1953-09-30 1953-09-30 Improvements in or relating to flexible couplings for pipes

Country Status (4)

Country Link
DE (1) DE1034058B (en)
FR (1) FR1113116A (en)
GB (1) GB763972A (en)
NL (1) NL89088C (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998986A (en) * 1959-05-28 1961-09-05 Us Rubber Co Expansion joint
US3460856A (en) * 1964-01-02 1969-08-12 Johns Manville Expansion joints for conduits
US3647247A (en) * 1969-07-24 1972-03-07 Johns Manville Tubular connector for expansion joints
US4258938A (en) * 1977-01-05 1981-03-31 Andre Rubber Company Limited Pipe couplings
WO1982002581A1 (en) * 1981-01-27 1982-08-05 Warren Edward Fluid flow ductwork
EP2058574A2 (en) * 2007-10-16 2009-05-13 Schenck Process GmbH Cuff for pipes
GB2467417A (en) * 2009-01-31 2010-08-04 Boeing Co Method of manufacturing curved composite structural elements
US8349105B2 (en) 2008-04-17 2013-01-08 The Boeing Company Curved composite frames and method of making the same
US8632653B2 (en) 2005-05-03 2014-01-21 The Boeing Company Method of manufacturing curved composite structural elements
US8932423B2 (en) 2008-04-17 2015-01-13 The Boeing Company Method for producing contoured composite structures and structures produced thereby
US9090028B2 (en) 2008-04-17 2015-07-28 The Boeing Company Method for producing contoured composite structures and structures produced thereby
US9278484B2 (en) 2008-04-17 2016-03-08 The Boeing Company Method and apparatus for producing contoured composite structures and structures produced thereby

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226377B (en) * 1959-07-10 1966-10-06 Asea Ab Rotatable pipe coupling between an electric vacuum melting furnace and a vacuum chamber
US4186949A (en) * 1978-04-21 1980-02-05 Taurus Gumiipari Vallalat Elastic pipe-connecting component for pipes or pipelines, or the like
FR2527301B1 (en) * 1982-05-18 1986-04-25 Rudolph Tuyaux Flexibles FILTERING EXPANSION BELLOWS AND METHOD FOR FORMING SUCH A BELLOWS
US4846510A (en) * 1983-04-22 1989-07-11 Twentieth Century Companies, Inc. Adjustable tubular wall structure for connectors and the like
US4673168A (en) * 1985-06-25 1987-06-16 The Goodyear Tire & Rubber Company Airspring and a method for making airspring flexible members
FR2699980B1 (en) * 1992-12-24 1995-03-24 Medinger Jean Claude Conformable piping, in particular forming a prefabricated sump.
EP4431779A1 (en) * 2023-03-16 2024-09-18 EagleBurgmann Germany GmbH & Co. KG Low emission expansion joint assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1696435A (en) * 1923-05-08 1928-12-25 Revere Rubber Co Expansion joint
GB603852A (en) * 1945-11-01 1948-06-24 Dunlop Rubber Co Improvements in or relating to expansion joints for pipe-lines

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998986A (en) * 1959-05-28 1961-09-05 Us Rubber Co Expansion joint
US3460856A (en) * 1964-01-02 1969-08-12 Johns Manville Expansion joints for conduits
US3647247A (en) * 1969-07-24 1972-03-07 Johns Manville Tubular connector for expansion joints
US4258938A (en) * 1977-01-05 1981-03-31 Andre Rubber Company Limited Pipe couplings
WO1982002581A1 (en) * 1981-01-27 1982-08-05 Warren Edward Fluid flow ductwork
US7943076B1 (en) 2005-05-03 2011-05-17 The Boeing Company Method of manufacturing curved composite structural elements
US8632653B2 (en) 2005-05-03 2014-01-21 The Boeing Company Method of manufacturing curved composite structural elements
US9630390B2 (en) 2005-05-03 2017-04-25 The Boeing Company Method of manufacturing curved composite structural elements
EP2058574A3 (en) * 2007-10-16 2010-08-18 Schenck Process GmbH Cuff for pipes
EP2058574A2 (en) * 2007-10-16 2009-05-13 Schenck Process GmbH Cuff for pipes
US8349105B2 (en) 2008-04-17 2013-01-08 The Boeing Company Curved composite frames and method of making the same
US8932423B2 (en) 2008-04-17 2015-01-13 The Boeing Company Method for producing contoured composite structures and structures produced thereby
US9090028B2 (en) 2008-04-17 2015-07-28 The Boeing Company Method for producing contoured composite structures and structures produced thereby
US9096305B2 (en) 2008-04-17 2015-08-04 The Boeing Company Curved composite frames and method of making the same
US9278484B2 (en) 2008-04-17 2016-03-08 The Boeing Company Method and apparatus for producing contoured composite structures and structures produced thereby
GB2467417A (en) * 2009-01-31 2010-08-04 Boeing Co Method of manufacturing curved composite structural elements
GB2467417B (en) * 2009-01-31 2011-09-21 Boeing Co Method of manufacturing curved composite structural elements

Also Published As

Publication number Publication date
DE1034058B (en) 1958-07-10
FR1113116A (en) 1956-03-23
NL89088C (en) 1958-09-15

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