US1941151A - Flexible metallic tube - Google Patents
Flexible metallic tube Download PDFInfo
- Publication number
- US1941151A US1941151A US463106A US46310630A US1941151A US 1941151 A US1941151 A US 1941151A US 463106 A US463106 A US 463106A US 46310630 A US46310630 A US 46310630A US 1941151 A US1941151 A US 1941151A
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- US
- United States
- Prior art keywords
- tube
- flexible metallic
- wires
- metallic tube
- wire
- 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
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Classifications
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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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
- F16L11/16—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
Definitions
- the present invention relates Yto flexible metallic tubes of the type formed by Winding convolutions of wire upon each other in interlocking relation, such tubes being commonly employed as protective casings for various purposes and also as conduits for the conveyance of fluids, such as lubricants.
- the object of the invention is to provide an improved flexible metallic tube that will possess greater tensile strength than tubes of the same weight heretofore produced.
- the tube is so formed that the extremities of a length of the same may be quickly and rmly attached to terminals of any desiredl form, without the use of solder, or other fastening devices,
- Fig. 1 is a plan view of a portion of a completed tube embodying my invention and showing the manner in which the tube is formed.
- Fig. 2 is a longitudinal sectional View of a portion of the completed tube shown in Fig. 1.
- Fig. 3 is a fragmentary sectional View illustrating the manner in which a terminal is attached'to one end of the tube shown in Fig. 1.
- the tube is formed by forcibly feedingV a pair of wires 1 and 2 and coiling the. same into a helix upon a suitable mandrel 3. ing the wires 1 and 2 and for coiling them simultaneously on a mandrel 3 is not shown, since mechanism of this type is well known in the art and forms no part of the present invention.
- the wires 1 and 2 are preferably halfround'in section so that when they are coiled upon the Vmandrel 3, the inside of the tube will present a smooth unbroken surface, as shown in Fig..2.
- a third wire 4 is fed to the tube being formed, at a distance from the wires 1 and 2, and this wire 4 is wound around the outside of the tube rformed by the wires 1 and 2.
- the outerwire 4 is triangular in cross section and in the coiling operation, the wire 4 is forced between the convolutions of the double inner coil while it is still bearing on the mandrel 3. Consequently, the wedgelike form of the wire 4 tends to spread apart the convolutions of the inner coil kand keep them un der tension.
- this helical vgroove 5 extending aroundy the outer surface of the tube provides a convenient way for attaching terminal members to the end portions of a length Yof tube.
- One form of terminal which can be conveniently applied to the tube consists of a cylindrical sleeve 6 providingv an internal rib or thread 7 of spiral form, which thread 'l fits within the groove 5 so as to permit thesleeve 6 to be screwed onto the end portion of the completed tube.
- the thread '7 may be made somewhat tapering towards one end so that the sleeve 6 will become tightly jammed on the tube after it has been screwed several turns.
- the present invention there is provided an improved flexible metallic tube that posessses great tensile strength owing to the provision of the double innerV coil, any pull on the tube being divided between thev wires 1 and 2.
- the tube possesses greater flexibility than one having a single innercoil, since only one of the two continuous grooves between convolutions of the double inner coil is engaged by the wedge shaped wire 4.
- the provision of an open helicalgroove extending around the outer surface of the tube provides means for firmly attaching, the ends of a length of tube to other members to which it is desired to connect the tube.
- the use of only one outer locking wire for two inner coiled wires results in a considerable saving in weight of material, without sacrifice of strength, as compared to tubingof the same diameter with a smooth outer surface.
- a flexible tube comprising a doubleinner coil providing outer peripheral grooves between the convolutions thereof, said double coil being surrounded by a single outer coil wedgingengagement'with only one of the grooves between the vconvolutions of the inner coil, theouter surface of the completed tube presenting an open groove extending-helically around the entire length of the tube.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
Dec. 26, 1933. M. MGR@ 1,941,151
Patented Dec. 26, 1933 UNITED STATES vPATENT OFFICE FLEXIBLE METALLIC TUBE Application June 23, 1930. serial No. 463,106
1 Claim.
The present invention relates Yto flexible metallic tubes of the type formed by Winding convolutions of wire upon each other in interlocking relation, such tubes being commonly employed as protective casings for various purposes and also as conduits for the conveyance of fluids, such as lubricants. The object of the invention is to provide an improved flexible metallic tube that will possess greater tensile strength than tubes of the same weight heretofore produced. In addition, the tube is so formed that the extremities of a length of the same may be quickly and rmly attached to terminals of any desiredl form, without the use of solder, or other fastening devices,
- commonly used in connection with such tubes.
The labove and other advantageous features of the invention will hereinafter more fully appear with reference to the accompanying drawing in whichl v Fig. 1 is a plan view of a portion of a completed tube embodying my invention and showing the manner in which the tube is formed.
Fig. 2 is a longitudinal sectional View of a portion of the completed tube shown in Fig. 1.
Fig. 3 is a fragmentary sectional View illustrating the manner in which a terminal is attached'to one end of the tube shown in Fig. 1.
Like reference characters refer to like parts` throughout the drawing.4 Y
Referring to the drawing, the tube is formed by forcibly feedingV a pair of wires 1 and 2 and coiling the. same into a helix upon a suitable mandrel 3. ing the wires 1 and 2 and for coiling them simultaneously on a mandrel 3 is not shown, since mechanism of this type is well known in the art and forms no part of the present invention. The wires 1 and 2 are preferably halfround'in section so that when they are coiled upon the Vmandrel 3, the inside of the tube will present a smooth unbroken surface, as shown in Fig..2. After a number of convolutions of the wires 1 and 2 have been coiled on the mandrel 3, a third wire 4 is fed to the tube being formed, at a distance from the wires 1 and 2, and this wire 4 is wound around the outside of the tube rformed by the wires 1 and 2. The outerwire 4 is triangular in cross section and in the coiling operation, the wire 4 is forced between the convolutions of the double inner coil while it is still bearing on the mandrel 3. Consequently, the wedgelike form of the wire 4 tends to spread apart the convolutions of the inner coil kand keep them un der tension. Since a double coil is formedby the wires 1 and 2, obviously the wire 4 will enter only one of the two continuous grooves between convolutions of the inner double coil, so that the completed tube presents on its outer surface an open helical groove indicated at 5, in the left hand portion of Fig. 1.
The particular mechanism for feed- As shown in Fig-3, this helical vgroove 5 extending aroundy the outer surface of the tube provides a convenient way for attaching terminal members to the end portions of a length Yof tube. One form of terminal which can be conveniently applied to the tube consists of a cylindrical sleeve 6 providingv an internal rib or thread 7 of spiral form, which thread 'l fits within the groove 5 so as to permit thesleeve 6 to be screwed onto the end portion of the completed tube. If desired, the thread '7 may be made somewhat tapering towards one end so that the sleeve 6 will become tightly jammed on the tube after it has been screwed several turns. Obviously, whensleeves 6 have been screwed onto the ends of a length of tube they will hold tightly so that the ends of the tube may be conveniently secured to members which it is desired to mechanically connect, or between which it is desired to transmit fluid, as when using the tube as a flexible conduit. One way of connecting a terminal sleeve 6 to another vmember is byproviding the outer end of the sleeve with standard threads 8 into which may be screwed the thready ed end of a shaft, or pipe 9.
From the foregoing, it is apparent that by the present invention there is provided an improved flexible metallic tube that posessses great tensile strength owing to the provision of the double innerV coil, any pull on the tube being divided between thev wires 1 and 2. InV addition, the tube possesses greater flexibility than one having a single innercoil, since only one of the two continuous grooves between convolutions of the double inner coil is engaged by the wedge shaped wire 4. Furthermore, the provision of an open helicalgroove extending around the outer surface of the tube provides means for firmly attaching, the ends of a length of tube to other members to which it is desired to connect the tube. Lastly, the use of only one outer locking wire for two inner coiled wires, results in a considerable saving in weight of material, without sacrifice of strength, as compared to tubingof the same diameter with a smooth outer surface.
I claim: I
A flexible tube comprising a doubleinner coil providing outer peripheral grooves between the convolutions thereof, said double coil being surrounded by a single outer coil wedgingengagement'with only one of the grooves between the vconvolutions of the inner coil, theouter surface of the completed tube presenting an open groove extending-helically around the entire length of the tube. Y
MICHEL NIGRO.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US463106A US1941151A (en) | 1930-06-23 | 1930-06-23 | Flexible metallic tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US463106A US1941151A (en) | 1930-06-23 | 1930-06-23 | Flexible metallic tube |
Publications (1)
Publication Number | Publication Date |
---|---|
US1941151A true US1941151A (en) | 1933-12-26 |
Family
ID=23838883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US463106A Expired - Lifetime US1941151A (en) | 1930-06-23 | 1930-06-23 | Flexible metallic tube |
Country Status (1)
Country | Link |
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US (1) | US1941151A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2246072A1 (en) * | 1971-09-23 | 1973-03-29 | Bowden Controls Ltd | BOWDEN TRAIN |
US3916723A (en) * | 1972-01-26 | 1975-11-04 | Bowden Controls Ltd | Transmission mechanisms |
US20040089362A1 (en) * | 2002-11-12 | 2004-05-13 | Bakker Emile A. M. | Single wire cable conduit |
US20060157134A1 (en) * | 2003-05-30 | 2006-07-20 | Kokusan Rasenkan Co,. Ltd. | Flexible pipe and method for producing the same |
US20090107571A1 (en) * | 2007-10-30 | 2009-04-30 | Bruno Ranieri Torchio | Flexible Hose Article And Related Methods |
US20140102782A1 (en) * | 2011-08-01 | 2014-04-17 | Yazaki Corporation | Wire harness |
-
1930
- 1930-06-23 US US463106A patent/US1941151A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2246072A1 (en) * | 1971-09-23 | 1973-03-29 | Bowden Controls Ltd | BOWDEN TRAIN |
US3916723A (en) * | 1972-01-26 | 1975-11-04 | Bowden Controls Ltd | Transmission mechanisms |
US20040089362A1 (en) * | 2002-11-12 | 2004-05-13 | Bakker Emile A. M. | Single wire cable conduit |
US6827108B2 (en) * | 2002-11-12 | 2004-12-07 | Daimlerchrysler Corporation | Single wire cable conduit |
US20060157134A1 (en) * | 2003-05-30 | 2006-07-20 | Kokusan Rasenkan Co,. Ltd. | Flexible pipe and method for producing the same |
US7219700B2 (en) * | 2003-05-30 | 2007-05-22 | Kokusan Rasenkan Co., Ltd. | Flexible pipe and method for producing the same |
US20090107571A1 (en) * | 2007-10-30 | 2009-04-30 | Bruno Ranieri Torchio | Flexible Hose Article And Related Methods |
US7963300B2 (en) * | 2007-10-30 | 2011-06-21 | Veyance Technologies, Inc. | Flexible hose article and related methods |
US20140102782A1 (en) * | 2011-08-01 | 2014-04-17 | Yazaki Corporation | Wire harness |
US9390837B2 (en) * | 2011-08-01 | 2016-07-12 | Yazaki Corporation | Wire harness |
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