US992516A - Flexible tube. - Google Patents

Flexible tube. Download PDF

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Publication number
US992516A
US992516A US54164110A US1910541641A US992516A US 992516 A US992516 A US 992516A US 54164110 A US54164110 A US 54164110A US 1910541641 A US1910541641 A US 1910541641A US 992516 A US992516 A US 992516A
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United States
Prior art keywords
tube
flexible tube
spirals
designates
strip
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Expired - Lifetime
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US54164110A
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James J Mulconroy
Edwin S Morris
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Priority to US54164110A priority Critical patent/US992516A/en
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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
    • F16L11/04Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/088Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising a combination of one or more layers of a helically wound cord or wire with one or more braided layers

Definitions

  • Our invention relates to a new and useful flexible tube formed of a strip of suitable metal shaped to provide substantially a ball bearing friction surface between the spirals whereby no angles or interlocking parts engage each other. which wouldthus tend to make the tube stiff or unwieldy.
  • Figure 1 represents a partial sectional view, with certain of the coverings broken away, of a metallic tube embodying our invention.
  • Fig. 2 represents a section on line w-m Fig. 1.
  • Fig. 3' represents a section on line y-y Fig. 1.
  • Fig. 4 represents a section in detached position of the metal strip spiraled'.
  • '1 designates a strip of metal, channeled longitudinally and having a cross section substantially of a double curved formexteriorly convex, with a channel or groove 2 formed in one of the curves, and by reason of the construction of the strip when spiraled by suitable mechanism, the grooved curved shaped half of one portion is forced inside the curved shaped half of an adjacent portion under great pressure, so that the inside of the outer curved shaped half will fit tightly over the grooved curved shaped half.
  • -5 designates one or more coverings which may be braided or woven and which may be wire or fabric, although we preferably 1 use wire. This covering tends to produce a uniform flexibility and prevents the spirals ternal or elongated strains.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Description

J. J. MULOONROY & E. S. MORRIS.
FLEXIBLE TUBE. APPLICATION FILED rmm, 1910.
Patented May 16, 1911.
INVENTORS WITNESSES monnsvs I UNITED STATES PATENT OFFICE.
JAMES J. IN IULCONROY AND EDWIN S. MORRIS, OF PHILAiDELPHIA, PENNSYLVANIA. I
FLEXIBLE TUBE.
Specification of Letters Patent. P tented May 16, 1911.
Application filed February 2, 1910. Serial No. 541,641.
county of Philadelphia, State of Pennsylvania, have invented a new and useful Flexible-Tube, of which the following is a speclfication. v
Our invention relates to a new and useful flexible tube formed of a strip of suitable metal shaped to provide substantially a ball bearing friction surface between the spirals whereby no angles or interlocking parts engage each other. which wouldthus tend to make the tube stiff or unwieldy.
It further consists in providing a packing placed in a suitable channel between the overlapping spirals whereby a liquid tight joint is obtained. v I
It further consists in providing a sultable spiral wire around the tube and thus strengthening it. i
It further consists of other novel features of construction all as will be hereinafter by acid, gas, oil or other liquids, nor .will
extreme heat cause it to deteriorate.
In the accompanying drawing, we have shown a construction which we have found in practice operates successfully, but it will be evident that the arrangement of the parts may be varied and other instrumentalities may be employed which will come within the scope of our invention, and we do not there-" fore desire to be limited to the exact form shown and described,'but desire to make such changes as may be necessary.
Figure 1 represents a partial sectional view, with certain of the coverings broken away, of a metallic tube embodying our invention. Fig. 2 represents a section on line w-m Fig. 1. Fig. 3' represents a section on line y-y Fig. 1. Fig. 4 represents a section in detached position of the metal strip spiraled'.
Similar numerals of reference indicate corresponding parts in the figures.
Referring to the drawings :'1 designates a strip of metal, channeled longitudinally and having a cross section substantially of a double curved formexteriorly convex, with a channel or groove 2 formed in one of the curves, and by reason of the construction of the strip when spiraled by suitable mechanism, the grooved curved shaped half of one portion is forced inside the curved shaped half of an adjacent portion under great pressure, so that the inside of the outer curved shaped half will fit tightly over the grooved curved shaped half.
3. designates. a packing, preferably an as-.
bestos string, which is seated in the channel 2 in the curved shaped half, whereby the two parts are suitably packed and produce a liquid, steam, or gas tight contact 'between the spirals, and does not interfere with the flexibility, it being noticed that by reasonof "the two curved shaped halves of the spirals that the two parts have substantially ball bearing movement between the same which results in extreme flexibility. 4 designates a wire preferably a heavy steel spring tempered wire. which surrounds the splrals and prevents the tube from collaps ng should a heavy weight fall or rest on it, or should the wheels of a wagon etc. pass over 1t. v
-5 designates one or more coverings which may be braided or woven and which may be wire or fabric, although we preferably 1 use wire. This covering tends to produce a uniform flexibility and prevents the spirals ternal or elongated strains.
6 designates'a fabric covering preferably of asbestos, which is used in connection with a rubber cover, and prevents the rubber from being charred or overcured or vulcanized because of the heat in the tube, when the tube is used to convey high steam pressure.
. We preferably desire to use .a' rubber tube 7 vulcanized to the fabric covering 6. Outside the rubber tube 7, We lace a ply of fabric 8, while around this abric we place a rubber covering 9, to protect the fabric.
We are aware that heretofore tubes have been constructed of spirall wound interlocking strips of metal having packing between the spirals, but we have found that such tubes. were made with interlocking flanges or angles on the strip of metal, and
' that the same have a.tendency,.tg,make the tubes rigid, and also to cause thepacking to from parting when subjected to extreme in-
US54164110A 1910-02-02 1910-02-02 Flexible tube. Expired - Lifetime US992516A (en)

Priority Applications (1)

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US54164110A US992516A (en) 1910-02-02 1910-02-02 Flexible tube.

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US54164110A US992516A (en) 1910-02-02 1910-02-02 Flexible tube.

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740153A (en) * 1954-01-28 1956-04-03 R L Hamilton Vacuum cleaner nozzle
US2861598A (en) * 1955-09-29 1958-11-25 Jr Stephen D Carder Flexible duct construction
US5485870A (en) * 1994-12-05 1996-01-23 Kraik; Newell P. Wire wrapped composite spiral hose and method
US6425419B1 (en) * 2001-08-22 2002-07-30 Sharon L. Attra Flexible air ducting
US20050062288A1 (en) * 2003-09-18 2005-03-24 Luigi Alaria Thread Spacer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740153A (en) * 1954-01-28 1956-04-03 R L Hamilton Vacuum cleaner nozzle
US2861598A (en) * 1955-09-29 1958-11-25 Jr Stephen D Carder Flexible duct construction
US5485870A (en) * 1994-12-05 1996-01-23 Kraik; Newell P. Wire wrapped composite spiral hose and method
US6425419B1 (en) * 2001-08-22 2002-07-30 Sharon L. Attra Flexible air ducting
US20050062288A1 (en) * 2003-09-18 2005-03-24 Luigi Alaria Thread Spacer

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