Improvements in Tube Expanders.
Year: 1889

page_text: Date of Application, 29th Jan., 1889
Complete Specification Loft, 20th Oct 1200
20 Accented 30th Nov 1880
PROVISIONAL SPECIFICATION
PROVISIONAL SPECIFICATION
Improvements in Tube Expanders.
RICHARD WILLIam Tayler and WILLIAM RICHARd Tayler 17 Angel Hill Bury
St. Edmunds in the County of Suffolk Engineers do hereby declare the nature of
this invention to be as follows:-
-
:
An Improved mechanical appliance or tool having for its object the more effectual
and rapid expansion of boiler tubes or other cylindrical bodies and for which
purpose the said tool is constructed of steel and other suitable metals and consists of a
cylindrical part or head having in continuation thereof a stem or neck and in com-
bination therewith a shaft or spindle which is provided with suitable threds and nuts.
The head of the said tool agreeing in its external diameter with the internal diameter
of the tubes or other bodies to be expanded and each part thereof being of the size
and length required. The said tool is provided with a cavity running through the
entire length of the head and neck the head having a cavity greater in diameter than
the cavity in the neck and this cavity in the head is conical in form or may be partly
conical and partly cylindrical.
Tho
In the said head semicircular pockets are provided to receive steel balls or other
spaces to receive rollers or a combination of pockets and spaces may be employed to
receive a combination of balls and rollers the said pockets or spaces allowing free
communication between the internal and external surfaces of the said head.
outer surface of the neck of the tool is provided with a suitable screw and in
combination therewith a box or guard and a collar are constructed to be screwed
thereon the said box or guard being for the purpose of fitting over or round the tube
or body to be expanded and the collar for adjusting the said box or Guard. The
shaft or spindle is so constructed as to be inserted in the cavity of the said tool and
having a projection thereon agreeing with the cavity in the head of the tool. This
spindle is also provided with screws and nuts on either side of the projection and is
longer than the combined length of the head and neck of the tool one end projecting
past the neck and terminating in a square the other end projecting past the head and
being provided with a stop or collar and lock nuts. This spindle is placed in the
cavity in the tool in order that the projection thereon may come in contact with the
balls or rollers or with both in combination which are contained in the pockets or
spaces provided in the head of the tool. The collar on the end of this spindle which
projects past the head is for the purpose of regulating the extent to which the said
spindle may rise in the cavity of the tool and operate on the balls or balls and rollers
by means of the projection on the spindle.
To give expansion to the tube or other cylindrical body the tool is inserted therein
and the nut on the end of the spindle which projects past the neck of the tool is
screwed down and the balls or balls and rollers are forced outwards and expand the
tube or other body circumferentially; then to the square on the same end of the
spindle a wrinch or handle is applied which being rotated gives a rotary motion to
the balls or balls and rollers in the pockets or spaces in the head of the tool. The
rotary motion thus given to the balls or rollers imparts a rotary motion to the tool
and this rotary motion of the tool operating on the box or guard by means of the
screw on the neck with the screw in the box or guard draws the tool forward and the
expansion which has been given to the tube circumferentially is continued latterally to
the end of the tube.
Dated this 10th day of January 1889.
RICHARD WM. TAYLER.
WILLIAM RD. TAYLER.

page_text: COMPLETE SPECIFICATION.
Improvements in Tube Expanders.
RICHARD WILLIAM TAYLER and WILLIAM RICHARD TAYLER Bury St. Edmunds
Suffolk Engineers 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 :-
An Improved appliance or tool to be inserted in tubes or other cylindrical bodies to
expand the same circumferentially by a rotary motion the operation of producing the
said rotary motion expanding the tube or body and withdrawing the Improved tool
from out of the tube or body and thereby completing the expansion laterally in one
operation without the aid of a hammer drift or other tools usually employed for this
purpose.
The Improved tool or expander consists of an arrangement of a spindle contained
within a cylindrical head and neck the head being provided with chambers or pockets
which receive balls or balls and rollers in combination. The outer surface of the
neck forms a screw and each end of the spindle forms a screw. The screwed ends of
the latter receive threaded nuts or collars and the screwed neck of the former receives
screwed collars or nuts one end of the said spindle is formed to receive a handle or
other means to rotate the same and cause a rotary motion to be given to the Improved
tool. This rotary motion is communicated to the Improved tool by means of a cone
or projection formed on the said spindle and the cone or projection is brought into
contact with the balls or balls and rollers in combination contained in the chambers or
pockets situated in the head of the Improved tool by tightening one of the nuts on
the end of the said spindle provded for the purpose. The rotary motion withdraws
the Improved tool from out of the tube or body by means of the screw on the neck
revolving within a threaded collar or guard provided for the purpose the said collar
or guard impinging on the surface surrounding the tube or body and thereby giving
the necessary resistance for the purpose. To regulate the degree of expansion to be
given to any tube or other body the collars or nuts on the other end of the spindle
are adjusted as may be necessary and to regulate the depth in the tube or body to
which it is required to give expansion, a nut or collar on the neck is adjusted for the
purpose.
We will now refer to the accompanying drawing and the letters thereon to describe
more fully the several parts and combinations of the Improved tool or expander and
the manner in which the Invention is to be carried out-A A is the spindle, and B
the cone or projection thereon H, K, are the cylindrical neck and head, C, C, are the
balls or balls and rollers in combination F, is the nut for tightening the spindle A
and thereby bringing the cone or projection B into contact with the balls C, C, E is
the nut or collar for regulating the depth of the expansion G, G, are nuts or collars
for adjusting the degree of expansion, D D is the collar or guard which impinges on
or is pressed to the surface surrounding the tube or body to be expanded.
To expand a tube or body the head K of the Improved tool is inserted therein to a
depth determined by an adjustment of the collar or guard D, D, on the neck H, ¤,
the nut F is then screwed up and the cone or projection B rises within the said
head K and comes in contact with the balls C. C, and forces them outwards to a
degree of expansion which has been determined by an adjustment of the nuts or
collars G, G, a handle or other contrivance is placed on the outer portion of the
spindle Land rotary motion imparted to the said spindle, rotary motion is thereby
given to the balls or rollers C, C, and the said balls or rollers revolving on the surface
of the tube or body being expanded impart a rotary motion to the head and neck HH
KK also and by means of a screw on the neck H H acting on the collar or guard D D
the said head and neck continue to revolve so long as rotary motion is kept up on the
end of the spindle L until the expansion is completed and the Improved tool or
expander leaves the tube or body.

page_text: Having now ascertained and described the nature of our Invention and the
manner in which it is to be performed we wish it to be understood that what we
claim is
I. In an Improved tool or expander the use of balls for the purpose and in the
manner described.
II. In an Improved tool or expander the use of balls and rollers in combination.
LII. In an Improved tool or expander the use of a spindle on which is formed a
cone or projection in the manner and for the purpose described.
IV. In an Improved tool or expander the method of obtaining a rotary motion by
means of a spindle rotating within a cylindrical body as described.
V. In an Improved tool or expander the method of employing the rotary motion
given to the balls or balls and rollers to give rotary motion to the body in which they
are contained as described.
VI. In an Improved tool or expander the method of securing the expansion of a
tube or other body at a precise depth as described.
VII. In an Improved tool or expander the method of commencing the expansion at
the extremity of its required depth and completing the said expansion at the end or
orifice thereof as described.
VIII. In an Improved tool or expander the method of regulating or controlling
the degree of expansion required to be given to a tube or other body as described.
Dated this 28th day of October 1880
RICHARD WILLIAM TAYLER.
WILLIAM RICHARD TAYLER.
RICHARD WILLIAM TAYLER.
WILLIAM RICHARD TAYLER.