US840766A - Tubing. - Google Patents

Tubing. Download PDF

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Publication number
US840766A
US840766A US28507405A US1905285074A US840766A US 840766 A US840766 A US 840766A US 28507405 A US28507405 A US 28507405A US 1905285074 A US1905285074 A US 1905285074A US 840766 A US840766 A US 840766A
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United States
Prior art keywords
tubing
formed
strips
thickness
spirals
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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
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US28507405A
Inventor
Edwin T Greenfield
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Edwin T Greenfield
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Application filed by Edwin T Greenfield filed Critical Edwin T Greenfield
Priority to US28507405A priority Critical patent/US840766A/en
Application granted granted Critical
Publication of US840766A publication Critical patent/US840766A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00Hoses, i.e. flexible pipes
    • F16L11/14Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/16Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/20Control lever and linkage systems
    • Y10T74/20396Hand operated
    • Y10T74/20402Flexible transmitter [e.g., Bowden cable]
    • Y10T74/20456Specific cable or sheath structure

Description

No. 840,766. PATENTED JAN. a, 1907. E. T. GREENFIELD.

TUBING.

APPLICATION FILED OCT. 30.1905. I

wnwtslsss: INVENTOR I 1 ATTORNEY TIE ern n W EDWIN T. GREENFIELD, OF KIAMESHA, NEW YORK.

TUBING.

Specification of Letters Patent.

Patented an. s, 1907.

To all whom it may concern.-

Be it known that I, EDWIN T. GREENFIELD, of Kiamesha, in the county of Sullivan and State of New York, have invented certain new and useful Improvements in Tubing, of which the following is a specification.

The invention concerns flexible spirallywound interlocking tubing (preferably metallic) of the character employed as conduit containing an electrical conductor or conductors and as armoringfor electric cables, hose, and the like.

' One of the objects of the invention is to provide an improved article of this character having maximum strength without, however, sacrificing the desirable feature of flexibility.

A further object is to provide a structure which may be manufactured with greater ease and at higher speed than is now possible.

The invention may be expressed in tubing formed of one or more strips bent into successive spirals having interlocking edges, tubing so constructed having been disclosed in several patents heretofore granted to me as, for example, No. 630,503, Figures 1 and 3. The material (usually steel) of which such tubing is constructed is required to be of such thickness as to adapt the same for practical use for the purpose desired. Naturally as the thickness is increased greater difliculty is experienced in the forming operation and more power and slower speed are required. Under the present invention these objections are overcome by employing instead of a strip of the full thickness required two strips each of substantially one-half such thickness, these being formed, as the single strip of full thickness is formed, by bending or winding and lying in spiral form arallel with and adj acent to each other.

I ave found that such parallel and adjacent strips can be given the proper-lateral curvature and also spirally formed tocomplete the tube by the use of less power and at greater speed than are required in the production of tubing from a single integral strip of the full thickness necessary.

Within the scope of this invention the tubing may be formed of a single pair of such half-thickness strips or of two pairs of such strips, as will be understoodupon reference to the patent above named. For the purpose of this disclosure 1 have illustrated the former construction in the drawings, in which Fig. 1 is a side elevation, and Fig. 2 a longitudinal section. I

In the production of this tubing, two (preferably metallic) strips a a, each of approximately one-half the thickness required for the walls of the tube, are laid together, one on the other, and passed simultaneously through a suitable die or dies, whereby they are laterally curved, so that the successive spirals shall interlock while remaining movable relatively to each other to assure flexibility.

After being given this lateral curvature the strips are formed into such successive interlocking spirals in any suitable manner-as,

-' overlying the pair first named being ivena laterally-convex sha e, all as will rea 'ly be understood by one s illed in the art.-

What I claim is 1. A tube consisting of a series ofspiral formed of a plurality of thicknesses of mate rial of equal width and one directly overlying another, the adjacent edges of said splrals,

being interlocked, substantially as set forth. 2. A tube consisting of a series of spirals formed of a plurality of thicknesses of material of equal width and one directly overlying another, said thicknesses being similarly curved transversely and said spirals being interlocked at their adjacent edges, substantial] as set forth.

T is specification signed and witnessed I this 26th day of October, 1905. 1

EDWIN T. GREENFIELD; Witnesses:

I. MoINTosH, S. O. EDMONDS.

US28507405A 1905-10-30 1905-10-30 Tubing. Expired - Lifetime US840766A (en)

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US28507405A US840766A (en) 1905-10-30 1905-10-30 Tubing.

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US28507405A US840766A (en) 1905-10-30 1905-10-30 Tubing.

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US840766A true US840766A (en) 1907-01-08

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US28507405A Expired - Lifetime US840766A (en) 1905-10-30 1905-10-30 Tubing.

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582797A (en) * 1946-07-08 1952-01-15 Peterson Thomas F Method of installing helically preformed elements on cables
US5350885A (en) * 1992-04-08 1994-09-27 Monogram Industries, Inc. Armored cable
US6825418B1 (en) 2000-05-16 2004-11-30 Wpfy, Inc. Indicia-coded electrical cable
US6906264B1 (en) 2004-06-17 2005-06-14 Southwire Company Color-coded armored cable
US20100108350A1 (en) * 2008-11-05 2010-05-06 International Business Machines Corporation Cable For High Speed Data Communications
US7954530B1 (en) 2009-01-30 2011-06-07 Encore Wire Corporation Method and apparatus for applying labels to cable or conduit
US8826960B1 (en) 2009-06-15 2014-09-09 Encore Wire Corporation System and apparatus for applying labels to cable or conduit
US9409668B1 (en) 2007-06-04 2016-08-09 Encore Wire Corporation Method and apparatus for applying labels to cable
US10272616B1 (en) 2016-07-07 2019-04-30 Encore Wire Corporation Method and apparatus for applying labels to cable

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582797A (en) * 1946-07-08 1952-01-15 Peterson Thomas F Method of installing helically preformed elements on cables
US5350885A (en) * 1992-04-08 1994-09-27 Monogram Industries, Inc. Armored cable
US5468914A (en) * 1992-04-08 1995-11-21 Monogram Industries Inc. Armored cable
US5557071A (en) * 1992-04-08 1996-09-17 Wpfy, Inc. Armored cable
US5708235A (en) * 1992-04-08 1998-01-13 Wpfy, Inc. Armored cable
USRE38345E1 (en) * 1992-04-08 2003-12-16 Wpfy, Inc. Armored cable
US6825418B1 (en) 2000-05-16 2004-11-30 Wpfy, Inc. Indicia-coded electrical cable
US20050016754A1 (en) * 2000-05-16 2005-01-27 Wpfy, Inc., A Delaware Corporation Indicia-marked electrical cable
US7465878B2 (en) 2000-05-16 2008-12-16 Wpfy, Inc. Indicia-marked electrical cable
US20090084575A1 (en) * 2000-05-16 2009-04-02 Dollins James C Indicia-Marked Electrical Cable
US8278554B2 (en) 2000-05-16 2012-10-02 Wpfy, Inc. Indicia-coded electrical cable
US6906264B1 (en) 2004-06-17 2005-06-14 Southwire Company Color-coded armored cable
US9409668B1 (en) 2007-06-04 2016-08-09 Encore Wire Corporation Method and apparatus for applying labels to cable
US9452856B1 (en) 2007-06-04 2016-09-27 Encore Wire Corporation Method and apparatus for applying labels to cable
US10046879B1 (en) 2007-06-04 2018-08-14 Encore Wire Corporation Method and apparatus for applying labels to cable
US7977574B2 (en) * 2008-11-05 2011-07-12 International Business Machines Corporation Cable for high speed data communications
US20100108350A1 (en) * 2008-11-05 2010-05-06 International Business Machines Corporation Cable For High Speed Data Communications
US7954530B1 (en) 2009-01-30 2011-06-07 Encore Wire Corporation Method and apparatus for applying labels to cable or conduit
US9321548B1 (en) 2009-01-30 2016-04-26 Encore Wire Corporation Method for applying labels to cable or conduit
US9446877B1 (en) 2009-01-30 2016-09-20 Encore Wire Corporation System and apparatus for applying labels to cable or conduit
US8454785B1 (en) 2009-01-30 2013-06-04 Encore Wire Corporation Method for applying labels to cable or conduit
US9950826B1 (en) 2009-01-30 2018-04-24 Encore Wire Corporation Method for applying labels to cable or conduit
US10035618B1 (en) 2009-01-30 2018-07-31 Encore Wire Corporation System and apparatus for applying labels to cable or conduit
US8826960B1 (en) 2009-06-15 2014-09-09 Encore Wire Corporation System and apparatus for applying labels to cable or conduit
US10272616B1 (en) 2016-07-07 2019-04-30 Encore Wire Corporation Method and apparatus for applying labels to cable

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