An Improved Tube Expander.
Year: 1890

page_text: Date of Application, 8th Mar., 1890
Complete Specification Left, 4th Oct., 1890-Accepted, 8th Nov., 1890
PROVISIONAL SPECIFICATION.
An Improved Tube Expander.
We, WILLIAM D. JOHN, of 320 Rebleca Avenue, Scranton, Pa. U.S.A., Fluo Setter,
and WILLIAM MAYLIN of 118 Cliff Street, Scranton, Pa. U.S.A. Machinist, do hereby
declare the naturo of this invention to be as follows:-
This our invention has for its object, to produce a tool, whereby tubes may bo
widened or expanded at the ends to facilitate the insertion therein of another tube or
for other purposes, in a neat, simple and expeditious manner hereinafter described.
The tool consists of a perforated cylinder formed of several longitudinal segments
held together by a suitable binding spring, sprung into and seated in an annular recess
formed around the diameter of the cylinder. One end of the cylinder is of larger
diameter than the tube or tubes to be expanded, and the other end of the cylinder is
diminished to enter the tube. A groove is formed in the shoulder formed by the two
diameters and receives the end of the tube.
In operation, the diminished end of the tool is placed in the end of the tube with
the edges of the tube abutting the shoulder, and within the groove formed therein.
A round or suitable, wedge-shaped or tapered piece of metal is then inserted in the
perforation through the cylinder, which expands and opens the end of the tube when
the tapered piece of metal driven in.
WILLIAM D. JOHN.
WILLIAM MAYLIN.
By their Agents,
Horn & Son.
COMPLETE SPECIFICATION.
An Improved Tube Expander.
We, WILLIAM D. JOHN of 320 Rebleca Avenue, Scranton Pennsylvania United
States of America Flue Setter and, WILLIAM MAYLIN of 118 Cliff Street Scranton
Pennsylvania, United States of America, Machinist, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
-
My invention has relation to flanging-tools for boiler-flues; and the object of the
invention is to provide a tool for this purpose whereby the tube may be set or
tightened in the tube-wheel preparatory to using the regular or usual tube-expander,
so that the tube will be rigidly held in place while being expanded; and to these
ends the novelty consists in the construction; combination, and arrangement of parts
of the same, as will be hereinafter more fully described, and particularly pointed out
in the claim.
In the accompanying drawings the same letters of reference indicate the same parts
of the invention.
Figure 1 is a view in perspective of my improved flanging tool; and
Fig. 2 is a longitudinal section of the same as
end of the tube inserted in the tube-sheet.
appears in use in the tube, with the
A is the flanging-tool, and is composed of a series of four or more sections a a a a,
the whole being held together by a circumferential spring B in the recess b.
C is a longitudinal central orifice in which the taper drift-pin D is driven when
the tool is being used.
E is an annular recess in which the end e of the tube E¹ enters; and F is an
ונSD6

page_text: annular shoulder which rests against the tube-sheet G, so as to prevent the end e of
the tube bottoming in the recess E.
HH' are shoulders one on each side of the recess I, and when the tool is inserted and
th pin D driven in a flange is raised on the outside of the tube on each side of the tube-
sheet, which effectually prevents the tube from rotating or moving backward or
forward while being expanded in the tube sheet in the regular manner.
It will be observed in Fig. 2 that while the shoulder F is against the tube-sheet, the
end of the tube does not reach to the bottom of the recess E. Therefore when the
drift is driven in, the tube is not forced forward, as the force of the blow given
the drift, is received by the tool itself, and its shoulder F, resting against the tubo
sheet, prevents the tool going forward and thereby carrying the tube with it, which
would necessitate the services of a second man at the other end of the tube to hold
an drive it back; but with my improved tool it will be seen that the only effect of
the blow on the driftepin is to spread the sections a a a a radially outward, and thus
by means of the shoulders H H raise flanges on the outside of the tube on each side
of the tube sheet.
One of the essential features of my invention is the annular grove E, leaving an
annular lip or abutment F, which serves as a positive gage when impinging against
the tube-sheet G.
Another essential feature is the annular groove I in the reduced portion of the tool,
having a cylindrical shoulder H at one end and a rounded tapering shoulder H' at the
other end. By this construction the proper desired form can be given to the tube E¹
without rotating the tool in the end of this tube.
It will thus be seen that with the aid of my improved tool one man is enough to do
the work of two.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what mannor the same__is_to_bo_performed, I declare that what I
claim is
The within-described improved article of manufacture consisting of a perforated
flanging-tool A formed of several longitudinal segments a a binding-spring B, seated
in an annular recess formed in the enlarged cylindrical portion of the tool, an annular
abutment F, an annular shoulder H, forming an intermediate annular groove E, a
rounded and tapered annular shoulder II' on the end of the reduced portion of the tool,
and an annular groove between the shoulders H H₁ all as specified.
Dated this 4th day of October 1890.
HORN & SON,
Agents for the Applicants.