US786847A - Steam-boiler fire-tube. - Google Patents

Steam-boiler fire-tube. Download PDF

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Publication number
US786847A
US786847A US20265504A US1904202655A US786847A US 786847 A US786847 A US 786847A US 20265504 A US20265504 A US 20265504A US 1904202655 A US1904202655 A US 1904202655A US 786847 A US786847 A US 786847A
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tube
steam
wall
fire
end portion
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US20265504A
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Peter H Seery
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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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/01—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses adapted for hoses having a multi-layer wall

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  • WITNESSES MINVENTOR I f) ATTORNEY UNITED STATES Patented April 11, 1905.
  • the invention relates to safe-ended steamboiler fire-tubes; and it consists in a new article of manufacture-namely. a steam-boiler fire-tube having a body portion and an ,end portion integrally formed of malleable metal, the wall of said end portion being of greater thickness than the wall of said body portion and the external diameter of said end portion being less than the external diameter of said body portion a
  • Figure 1 is a longitudinal section of my improved safeend tube
  • Fig. 2 is a section of a tube-sheet with the end of the'tube secured therein.
  • A is a boiler-tube formed integrally of malleable metal, the wall of which at its end portion B is thicker than along the body portion 0.
  • the exterior diameter of the tube is redueed at the end portion B, as shown at 0 d in Fig. 1.
  • the different thicknesses of metal at end and body, portion of the tube are preferably produced by upsetting the end portion B of the tube by endwise compression of the'same. In this way the wall of said end portion is not only increased in thickness, but at the same time is rendered denser than the wall of said body portion.
  • a steamboiler fire-tube having a body portion and an end portion integrally formed of malleable metal, the wall of said end portion being of greater thickness than the wall of said body,

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

Description

N 0. 786,847. PATENTE'D APR. 11, 1 905.
P. H. SEERY. STEAM BOILER FIRE TUBE.
APPLICATION FILED APR. 11, 1904.
WITNESSES: MINVENTOR I f) ATTORNEY UNITED STATES Patented April 11, 1905.
PATENT I OFFICE.
STEAM-BOILER FIRE-TUBE.
sPEcIFIcATIoN formingpart of Letters Patent No. 786,847, dated April 11, 1905. v
' Application filed April 11, 1904. Serial No. 202,655.
To-aZZ whom it may concern.-
Be it known that I, PETER H. SEERY,of Newark, Essex county, New Jersey, have invented a new and useful Improvement in Steam- Boiler'Fire-Tubes, of which the following is a specification.
The invention relates to safe-ended steamboiler fire-tubes; and it consists in a new article of manufacture-namely. a steam-boiler fire-tube having a body portion and an ,end portion integrally formed of malleable metal, the wall of said end portion being of greater thickness than the wall of said body portion and the external diameter of said end portion being less than the external diameter of said body portion a In the accompanying drawings, Figure 1 is a longitudinal section of my improved safeend tube, and Fig. 2 is a section of a tube-sheet with the end of the'tube secured therein.
Similar letters of reference indicate like parts.
A is a boiler-tube formed integrally of malleable metal, the wall of which at its end portion B is thicker than along the body portion 0. The exterior diameter of the tube is redueed at the end portion B, as shown at 0 d in Fig. 1. p
The different thicknesses of metal at end and body, portion of the tube are preferably produced by upsetting the end portion B of the tube by endwise compression of the'same. In this way the wall of said end portion is not only increased in thickness, but at the same time is rendered denser than the wall of said body portion.
"In Fig. 2 the improved safe-ended tube is shown secured in a tube-sheet E, forming part of a fire-box, (indicated at F.) The flame is resisted by the thickened wall of end portion B, not only where the tube extremity is riveted over, but also by said wall, which extends, as shown, through the tube-sheet and to the body portion 0.
The advantages of my improved construction are, first, that the need for welding on an additional safe end having thicker walls is completely obviated at great saving of time and expense; second, there is no joint between the thickened end and the rest of the tube; third, when the thickening of the wall is produced by upsetting, the metal is rendered also denser and more resistant to heat; fourth, the thickening is produced for a distance from the tube extremity, so that not only is the tube rendered stronger and better able to encounter the scaling effects of heat at said extremity when located in a boiler fire-box, but throughout a considerable portion of its length overwhich the entering flame extends.
I claim As a new article of manufacture, a steamboiler fire-tube having a body portion and an end portion integrally formed of malleable metal, the wall of said end portion being of greater thickness than the wall of said body,
portion, and the external diameter of said end portion being less than the external diameter of said body portion.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
- PETER H. SEERY. Witnesses:
WM. H. SIEGMAN, I. A. VAN WART.
US20265504A 1904-04-11 1904-04-11 Steam-boiler fire-tube. Expired - Lifetime US786847A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103742A (en) * 1956-02-29 1963-09-17 Cruson Patents Nv Method for making a seating on a tube
US6016843A (en) * 1996-02-21 2000-01-25 Calsonic Corporation Flanged pipe unit and method of producing same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103742A (en) * 1956-02-29 1963-09-17 Cruson Patents Nv Method for making a seating on a tube
US6016843A (en) * 1996-02-21 2000-01-25 Calsonic Corporation Flanged pipe unit and method of producing same
US6360415B1 (en) 1996-02-21 2002-03-26 Calsonic Kansei Corporation Flanged pipe unit and method of producing same

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