US2007779A - Method of manufacturing insulating sleeves - Google Patents

Method of manufacturing insulating sleeves Download PDF

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Publication number
US2007779A
US2007779A US623694A US62369432A US2007779A US 2007779 A US2007779 A US 2007779A US 623694 A US623694 A US 623694A US 62369432 A US62369432 A US 62369432A US 2007779 A US2007779 A US 2007779A
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United States
Prior art keywords
strip
quilt
coiled
paper
insulating
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Expired - Lifetime
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US623694A
Inventor
Vilen Olof Einar
Bergnehr Torsten Gunnar
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ARKI AB
Original Assignee
ARKI AB
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Publication date
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Publication of US2007779A publication Critical patent/US2007779A/en
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    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1028—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
    • Y10T156/1033—Flexible sheet to cylinder lamina

Definitions

  • the present invention ⁇ relates to a method of manufacturing insulating sleeves of an insulating sheet or quilt of the kind which consists of a layer or body of sea-grass, particularly dried eel 5 grass, or the like, interposed between external layers or sheets of paper or the like, and the invention has for its ⁇ purpose to produce an inexpensive and eicient, pipe covering or insulation which shall have the same excellent insulating l property as the said material.
  • the method according to the invention is principally characterized by that the external layer of a strip of such insulating quilt is moistened, at least on one side of the strip, after which the l strip is rolled or coiled, for instance on a rod or axle, to an approximately cylindrical shape and is retained in such coiled shape, for instancerby means of a surrounding metal sleeve or Athe like,
  • the moistening of the external layer of the strip of quilt may suitably be effected by applying to the same a sheet, orA several sheets,
  • said sheet ⁇ Vof paper may also suitably be folded over the opposite edges of the strip.
  • a strip of a suitable width is cut from an insulating quilt of the above-mentioned kind, yafter which the external paper layer of the strip is to be moistened, at least o'n one side thereof, which may be effected by direct application of water.
  • this strip ⁇ is to be rolled or coiled to an approximately cylindrical shape.
  • a strip cut from a piece of quilt is generally open at both edges, so that the body of insulating material, ⁇ the eel grass, interposed be- 40 tween the two external paper layers, might easily be pressed out at the edges of the strip, when coiling the same, it is advantageous rst to seal said edges, which may suitably be effected by placing the cut strip of quilt on a sheet, or several sheets, of paper, fabric, or the like, after a suitable paste or glue, whereby, when the strip of quilt is placed on the same, the' external layer of the strip becomes simultaneously moistened,
  • the sheet of ⁇ paper may be moistened in some l otherfmanner and, when applied to the strip of quilt and folded around the edges of the same, the sheet of paper may be fastened to the strip by means of staples or in other suitable manner, or said sheet of paper may be moistened after it has been fastened to the strip of quilt.
  • the strip of quilt is rolled or coiled by hand orrby mea-nsA of a suitable machine, for instance around a rod or around an axle or mandrel, so that said strip obtains an approximately cylindrical shape, and when so coiled it is inserted in a cylinder or sleeve of metal or the like.
  • the accompanying drawing shows a cross section of the strip of quilt coiled around the rod or axle and inserted in the metal cylinder.
  • the strip is coiled around the rod or axle B so that the edges of the strip overlap, and the strip is placed in the metal cylinder l. .coiled insulating strip therein is then placed in a drying chamber to be dried. During thedrying the moisture evaporates from the external layer of the strip and from the surrounding sheet of paper, and the coiled strip of quilt will therefore retain the cylindrical shape which it has obtained duringl the coiling.
  • the cylinder is taken out of the drying chamber and the coiled insulating sleeve is removed from the same.
  • the coiled ⁇ strip of quilt retains the shape illustrated in the drawing.
  • The' insulating sleeve thus produc-ed is elastic or resilient, however, so that after its overlapping edges have been separated and the sleeve has been passed over and placed around a pipe or the like, the sleeve will resume its closed shape so that the edges will again overlap;
  • a suitable number of more or less V-shaped cuts are made in the insulating sleeve in that Yside of the same vwhich will have the smallest 4radius of curvature n placed around the pipe.

Description

July 9, 1935.
o. E. VILEN ET AL METHOD OF MANUFACTURING INSULATING"SLEEVES Patented July 9, 1935 METHOD @MANUFACTURING INSULATING sLEEvEs Olof Einar Viln and Torsten, Gunnar Bergnhr,
Stockholm, Sweden, assignors, by mesne assignments, to Aktiebolaget Arki, Sweden, acompany of Sweden Application July 21, 1932, Serial No; 623,694 In Sweden March 13, 1931 1 Claim.` (Cl. 154-28) The present invention`relates to a method of manufacturing insulating sleeves of an insulating sheet or quilt of the kind which consists of a layer or body of sea-grass, particularly dried eel 5 grass, or the like, interposed between external layers or sheets of paper or the like, and the invention has for its `purpose to produce an inexpensive and eicient, pipe covering or insulation which shall have the same excellent insulating l property as the said material.
The method according to the invention is principally characterized by that the external layer of a strip of such insulating quilt is moistened, at least on one side of the strip, after which the l strip is rolled or coiled, for instance on a rod or axle, to an approximately cylindrical shape and is retained in such coiled shape, for instancerby means of a surrounding metal sleeve or Athe like,
while said coil is dried by the application of heat,
after which the coiled strip is removed from the metal sleeve. The moistening of the external layer of the strip of quilt may suitably be effected by applying to the same a sheet, orA several sheets,
of paper, fabric, or the like, coated with a suitable paste or glue, or moistened in other manner,
and said sheet `Vof paper may also suitably be folded over the opposite edges of the strip.
Thus, when carrying out the method according to the invention, a strip of a suitable width is cut from an insulating quilt of the above-mentioned kind, yafter which the external paper layer of the strip is to be moistened, at least o'n one side thereof, which may be effected by direct application of water. l
Afterwards this strip` is to be rolled or coiled to an approximately cylindrical shape. However, since such a strip cut from a piece of quilt is generally open at both edges, so that the body of insulating material, `the eel grass, interposed be- 40 tween the two external paper layers, might easily be pressed out at the edges of the strip, when coiling the same, it is advantageous rst to seal said edges, which may suitably be effected by placing the cut strip of quilt on a sheet, or several sheets, of paper, fabric, or the like, after a suitable paste or glue, whereby, when the strip of quilt is placed on the same, the' external layer of the strip becomes simultaneously moistened,
cr the sheet of `paper may be moistened in some l otherfmanner and, when applied to the strip of quilt and folded around the edges of the same, the sheet of paper may be fastened to the strip by means of staples or in other suitable manner, or said sheet of paper may be moistened after it has been fastened to the strip of quilt.
When the external layer of the strip of quilt has been moistened in one manner or other, as above stated, the strip of quilt is rolled or coiled by hand orrby mea-nsA of a suitable machine, for instance around a rod or around an axle or mandrel, so that said strip obtains an approximately cylindrical shape, and when so coiled it is inserted in a cylinder or sleeve of metal or the like.
The accompanying drawing shows a cross section of the strip of quilt coiled around the rod or axle and inserted in the metal cylinder. denotes the strip of quilt having external paper layers 2, 2, and 3 is the surrounding sheet of paper folded over the'edges of the strip. The strip is coiled around the rod or axle B so that the edges of the strip overlap, and the strip is placed in the metal cylinder l. .coiled insulating strip therein is then placed in a drying chamber to be dried. During thedrying the moisture evaporates from the external layer of the strip and from the surrounding sheet of paper, and the coiled strip of quilt will therefore retain the cylindrical shape which it has obtained duringl the coiling. When the drying is completed, the cylinder is taken out of the drying chamber and the coiled insulating sleeve is removed from the same.
By the treatment above described the result is attained, as already stated, that the coiled `strip of quilt retains the shape illustrated in the drawing. The' insulating sleeve thus produc-ed is elastic or resilient, however, so that after its overlapping edges have been separated and the sleeve has been passed over and placed around a pipe or the like, the sleeve will resume its closed shape so that the edges will again overlap;
If a bent tube is to be insulated, a suitable number of more or less V-shaped cuts are made in the insulating sleeve in that Yside of the same vwhich will have the smallest 4radius of curvature n placed around the pipe. y
Said cylinder with the when the sleeve has bee 10 least on one side of a strip of such insulating quilt by applying to the same a sheet of paper, fabric or the like coated with an adhesive, folding said sheet of paper or the like over the edges 0f said strip, ceiling said strip to an approximately cylindrical shape, and drying said coiled strip by the application of heat while retaining its coiled shape.
oLoF EINAR VILN. TORSTEN GUNNAR BERGNHR.
US623694A 1931-03-13 1932-07-21 Method of manufacturing insulating sleeves Expired - Lifetime US2007779A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2007779X 1931-03-13

Publications (1)

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US2007779A true US2007779A (en) 1935-07-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564914A1 (en) * 1984-05-25 1985-11-29 Umac Inc CONNECTING DEVICE FOR ENABLING CONNECTION OR REPAIR OF TUBULAR ELEMENTS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564914A1 (en) * 1984-05-25 1985-11-29 Umac Inc CONNECTING DEVICE FOR ENABLING CONNECTION OR REPAIR OF TUBULAR ELEMENTS

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