US1101990A - Tube-forming strip. - Google Patents

Tube-forming strip. Download PDF

Info

Publication number
US1101990A
US1101990A US65364111A US1911653641A US1101990A US 1101990 A US1101990 A US 1101990A US 65364111 A US65364111 A US 65364111A US 1911653641 A US1911653641 A US 1911653641A US 1101990 A US1101990 A US 1101990A
Authority
US
United States
Prior art keywords
strip
tube
forming strip
forming
edges
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 - Lifetime
Application number
US65364111A
Inventor
George R Wyman
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.)
CHARLES S BIRD
Original Assignee
CHARLES S BIRD
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 CHARLES S BIRD filed Critical CHARLES S BIRD
Priority to US65364111A priority Critical patent/US1101990A/en
Application granted granted Critical
Publication of US1101990A publication Critical patent/US1101990A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0039—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads
    • B31D5/0043—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material
    • B31D5/0047—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material involving toothed wheels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/043—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of plaster
    • 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
    • Y10T156/1039—Surface deformation only of sandwich or lamina [e.g., embossed panels]
    • Y10T156/1041—Subsequent to lamination
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge
    • Y10T428/24215—Acute or reverse fold of exterior component
    • Y10T428/24231—At opposed marginal edges
    • Y10T428/2424—Annular cover
    • Y10T428/24248—One piece
    • Y10T428/24256—Abutted or lapped seam
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves

Definitions

  • One object of the invention is to so construct a tube forming strip that no raw edges are present in the finished tube.
  • Another object of the invention is to so construct a tube forming strip having a layer of insulating fiber or material of comparatively coarse quality that such layer, in the strip aswell as in the completed tube is protected from contact or exposure.
  • Another object of the invention is. to so construct a tube forming strip that, when said strip is formed into a tube, the drawing intosaid tube of wires or other articles is facilitated.
  • the invention consists in a tube forming strip of material having its edge portions turned inward whereby the edge of the strip is formed by a fold of the material as distinguished from a raw cut edge of such material.
  • the invention also consists in a tube forming strip comprising a filling strip and a layer of hard paper secured to said filling strip.
  • the invention also consists in a tube forming strip comprising. a filling strip of comparatively coarse fibrous material and a Wrapper of hard and comparatively fine paper secured to said filling strip and covering the edges thereof.
  • the invention also consists in a tube forming strip having ridges extending longitudinally or approximately longitudinally of the strip.
  • Figure 1 represents a plan view of the described and. pointed out in the improved tube forming strip, in its preferred form, parts of the same being broken away to show the filling or insulating strip.
  • Figure 2 represents an enlarged sectional view of the strip as taken on line 22-Fig. 1
  • Fig. 3 represents a. cross sectional view of a tube formed fro the improved strip as taken on line 33 4.
  • Fig. 4 represents a view of a tube or conduit formed by bringing the edges of the strip together approximately in a straight line.
  • Fig. 5 represents a view of a tube or conduit formed by winding-the improved strip spirally.
  • Strips of this nature are used to form the inner walls or surfaces of tubes and more particularly of tubes adapted to be used for insulating conduits for electric wires which Wires are usually drawn into'the tubes after the tubes are secured in building structures.
  • the inner walls thereof shall not present raw edges whichv may retard the drawing in of the electric wires or cables by a tendency to engage the wrappings or insulating coverings of said wires or cables.
  • the raw edges of said strip be so confined thatthey cannot swell out or spring toward the bore of the tube.
  • a strip'5 of coarse paper stock or of fibrous material constituting a core and adapted, to some extent, to electrically insulate a wire or cable around which said strip is wrapped.
  • This strip 5 is placed against one surface of the outer stripl6 of hard strong paper and is preferably secured thereto by adhesive, the edge portions of the strip 6 being wrapped over, and preferably, secured. to the back of the strip 5 whereby the edges, 7 7 of the complete stripare slightly rounded.
  • the strip is reinforced and strengthened by transversely extending ribs or creases 9 on the outer face thereof which are produced simultaneously with the forming of the corrugated inner face, the formation of these ribs or creases leaving the inner face of the strip indented transversely at spaced intervals as shown at 10, Fig. 1, where the forming die or roll compresses the material so as to force the same outwardly on the outer face and produce the ribbed or creasedouter face of the strip.
  • the strip 6 be of suflicient width to wrap completely around the strip 5 as by this construction the hard and closely condensed material of i i the strip or wrapper 6 to some extent protects the coarser fiber of strip 5 from moisture.
  • L A' strip adapted to form tubular insulation comprising a core and a relatively length- 2.'A strip adapted to form tubular insu- I 1216011, comprising a core and a relatively thin covering therefor, the covering being adhesively secured to the core and having a cross-sectionallength to provide overlapping ends, the'inner face of the strip being creased to provide a plurality of corrugations in the covering substantially continuous in cross-section and extending length- Wise of the strip, the creases extending into the core, said strip having lateral creasings spaced apart and of greater width on the outer face than on the inner face.

Description

C. S. BIRD (in G. R. WYMAN.
TUBE FORMING STRIP. APPLICATION FILED 0 019, 1911.
1,101,990, Patented June 30,1914.
' fully "cnnntns s. BIRD I AND PA'rE ion TUBE-FORMING smrr.
Specification of Letters Patent. Patented June 30, 1914:. Application flledpcto'ber 9, 1911. Serial No. 653,641. a
formed.
One object of the invention is to so construct a tube forming strip that no raw edges are present in the finished tube.
Another object of the invention is to so construct a tube forming strip having a layer of insulating fiber or material of comparatively coarse quality that such layer, in the strip aswell as in the completed tube is protected from contact or exposure.
Another object of the invention is. to so construct a tube forming strip that, when said strip is formed into a tube, the drawing intosaid tube of wires or other articles is facilitated.
Other objects of the invention will appear from the following description.
The invention consists in a tube forming strip of material having its edge portions turned inward whereby the edge of the strip is formed by a fold of the material as distinguished from a raw cut edge of such material. p
The invention also consists in a tube forming strip comprising a filling strip and a layer of hard paper secured to said filling strip. g
The invention also consists in a tube forming strip comprising. a filling strip of comparatively coarse fibrous material and a Wrapper of hard and comparatively fine paper secured to said filling strip and covering the edges thereof.
The invention also consists in a tube forming strip having ridges extending longitudinally or approximately longitudinally of the strip.
The invention also consists in such other novel features of construction and combination of parts as shall hereinafter be more claimsp Figure 1, represents a plan view of the described and. pointed out in the improved tube forming strip, in its preferred form, parts of the same being broken away to show the filling or insulating strip. Fig. 2, represents an enlarged sectional view of the strip as taken on line 22-Fig. 1, Fig. 3, represents a. cross sectional view of a tube formed fro the improved strip as taken on line 33 4. Fig. 4, represents a view of a tube or conduit formed by bringing the edges of the strip together approximately in a straight line. Fig. 5, represents a view of a tube or conduit formed by winding-the improved strip spirally.
Similar numerals of reference designate corresponding parts throughout.
Strips of this nature are used to form the inner walls or surfaces of tubes and more particularly of tubes adapted to be used for insulating conduits for electric wires which Wires are usually drawn into'the tubes after the tubes are secured in building structures. Obviously it is important 'to so construct the tubes that the inner walls thereof] shall not present raw edges whichv may retard the drawing in of the electric wires or cables by a tendency to engage the wrappings or insulating coverings of said wires or cables. It i is also of some importance that, where a strip of insulatin rfiber is incorporated in the wall of the tu e, the raw edges of said strip be so confined thatthey cannot swell out or spring toward the bore of the tube.
In carrying our invention into practice in itspreferred form we take a strip'5 of coarse paper stock or of fibrous material constituting a core, and adapted, to some extent, to electrically insulate a wire or cable around which said strip is wrapped. This strip 5 is placed against one surface of the outer stripl6 of hard strong paper and is preferably secured thereto by adhesive, the edge portions of the strip 6 being wrapped over, and preferably, secured. to the back of the strip 5 whereby the edges, 7 7 of the complete stripare slightly rounded. The combined strips 5 and. 6 are now, or at some time during the process of manufacture passed through any suitable machine by which parallel creases are formed in the wrapper 6 approximately longitudinally of the strip whereby the ridges 8, 8 are formed by the material of wrapper 6 on that surface thereof which is intended ultimately to form the inner surface or lining of the completed tube or conduit. When the strip is formed into a tube as shown in Figs. 4 'and5 for-insertion into a pipe, the
rounded longitudinal edges .7, 7 where they meet form a longitudinally extending groove corresponding to those formedby the ridges v8, so that the're is no break in the continulty of the longitudinally rooved or creased inner face of the insulating tube. The strip is reinforced and strengthened by transversely extending ribs or creases 9 on the outer face thereof which are produced simultaneously with the forming of the corrugated inner face, the formation of these ribs or creases leaving the inner face of the strip indented transversely at spaced intervals as shown at 10, Fig. 1, where the forming die or roll compresses the material so as to force the same outwardly on the outer face and produce the ribbed or creasedouter face of the strip. We prefer that the strip 6 be of suflicient width to wrap completely around the strip 5 as by this construction the hard and closely condensed material of i i the strip or wrapper 6 to some extent protects the coarser fiber of strip 5 from moisture.
It is not our intention to limit our invention by the above statement of the kind of material preferably used nor as to the shape or extension ofthe ridges or projections 8, 8' and it is obvious that such ridges or projections may be omitted in some cases.
ping ends, the inner face 0 Having thus described our invention we claim as new and desire to secure by Letters Patent.
L A' strip adapted to form tubular insulation, comprising a core and a relatively length- 2.'A strip adapted to form tubular insu- I 1216011, comprising a core and a relatively thin covering therefor, the covering being adhesively secured to the core and having a cross-sectionallength to provide overlapping ends, the'inner face of the strip being creased to provide a plurality of corrugations in the covering substantially continuous in cross-section and extending length- Wise of the strip, the creases extending into the core, said strip having lateral creasings spaced apart and of greater width on the outer face than on the inner face.
' CHARLES S. BIRD.
,GEORGE E. WYMAN. Witnesses: I
H. H. MILLER, M. M. Burns.
US65364111A 1911-10-09 1911-10-09 Tube-forming strip. Expired - Lifetime US1101990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US65364111A US1101990A (en) 1911-10-09 1911-10-09 Tube-forming strip.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65364111A US1101990A (en) 1911-10-09 1911-10-09 Tube-forming strip.

Publications (1)

Publication Number Publication Date
US1101990A true US1101990A (en) 1914-06-30

Family

ID=3170186

Family Applications (1)

Application Number Title Priority Date Filing Date
US65364111A Expired - Lifetime US1101990A (en) 1911-10-09 1911-10-09 Tube-forming strip.

Country Status (1)

Country Link
US (1) US1101990A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650619A (en) * 1953-09-01 Pipe protector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650619A (en) * 1953-09-01 Pipe protector

Similar Documents

Publication Publication Date Title
US2181035A (en) Tubing and method of making the same
US3321357A (en) Reinforced covering for pipes and method of making the same
US1917456A (en) Multi-ply fibrous structure
US504397A (en) Electric conductor
US1101990A (en) Tube-forming strip.
US1827035A (en) Insulating jacket
US3025340A (en) Flexible power cable
US2758043A (en) Unit heat insulation for pipes
US550281A (en) Robert h
US591997A (en) James d
US1100090A (en) Roll.
US1970406A (en) Wire coil
US2094334A (en) Heat insulating tape
US644312A (en) Electrical helix.
US2149771A (en) Electric cable
US884634A (en) Hose.
US2379756A (en) Insulating sheath on electrical conductor strands
US683514A (en) Non-conducting covering.
US1594612A (en) Insulating tape
US1814224A (en) Woven tubular fabric
US1271211A (en) Manufacture of pipes, tubes, and like hollow bodies.
US568756A (en) Max guilleaume
US864167A (en) Insulating-conduit for electric wires.
US304539A (en) Edwin d
US1937561A (en) Method of making waterproof heat insulating tape