Improvements in Tools for Expanding, Cutting and Beading the Ends of Tubes.
Year: 1899

page_text: Date of Application, 25th Mar., 1899
Complete Specification Left, 9th Nov., 1899-Accepted, 30th Dec., 1899
Improvements in Tools for Expanding, Cutting and Beading the
Ends of Tubes.
We, WILLIAM PARRATT, of Poplar Iron Works, King Street, Poplar, in the
County of London, General Manager to the Firm of George Fletcher & Co., and
HOWARD MARSH, of Masson & Atlas Works, Litchurch, in the County of Derby,
Works Manager, do hereby declare the nature of this invention to be as
follows:-
-
This invention relates to improvements in tools, for expanding, cutting and
beading the ends of tubes, of the kind described in the Specification of former
Patent No. 12101 of 1886.
In the specification of the said former patent there is described a tool for
expanding, cutting and beading the ends of tubes, but it has been found in
practice that although the said tool answered well for expanding and beading
it could not be used satisfactorily to cut off or trim the ends of the tubes without.
the expenditure of considerable trouble for changing cutters, etc.
Now, it is the object of this invention to provide a tool which shall carry out
all three operations with ease and without the necessity for changing cutters, etc.
To this end we construct a tool comprising, as described in the specification of
the said former patent, a hollow spindle the upper part of which is adapted to
fit into the socket of an ordinary drilling machine spindle, for example, the
lower end being screwed to receive an expander, preferably of the Dudgeon
type, and a taper centre piece or drift carrid by a hollow bush in the spindle and
adapted to revolve with the expander rollers and to be raised or lowered through
the medium of a hand wheel upon the spindle. The beader is also fitted to the
tool in the manner described.
In order, however, to enable the cutting or trimming operation to be success-
fully effected with case we provide a second hand-wheel upon the externally
screw-threaded spindle, the said hand-wheel carrying the cutter which works in
a slot in the expander and is operated through the medium of the hand wheel.
A tool constructed in this manner operated as follows. The hollow spindle
is fitted into the socket of a drilling machine, or to a ratchet brace, for example,
when it is desired to actuate the tool by hand and the hollow spindle is rotated,
the attendant then gripping the hand-wheel in connection with the central
taper piece or drift which is thereby forced downwards so as to expand the tube
end in the well known manner. The attendant then releases the hand wheel to
withdraw the expanding drift and approaches the cutter to the tube end by
grasping the second hand-wheel, and finally, after the tube end has been trimmed,
the cutter is withdrawn and the beader advanced by means of the feed mechanism
of the drilling machine or ratchet brace.
Dated the 25th day of March 1899
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicants.

page_text: Improvements in Tools for Expanding, Cutting and Beading the
Ends of Tubes.
We, WILLIAM PARKATT, of Poplar Iron Works, King Street, Poplar, in the
County of London, General Manager to the Firm of George Fletcher & Co., and
HOWARD MARSH, of Masson & Atlas Works, Litchurch, in the County of Derby,
Works Manager, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement;-
-
This invention relates to improvements in tools for expanding, cutting and.
beading the ends of tubes of the kind described in the Specification of former
Patent No. 12101 of 1886.
In the specification of the said former patent there is described a tool for
expanding, cutting and beading the ends of tubes, but it has been found in
practice that although the said tool answered well for expanding and beading
it could not be used satisfactorily to cut off or trim the ends of the tubes without
the expenditure of considerable trouble for changing cutters, etc.
Now, it is the object of this invention to provide a tool which shall carry out
all three operations with ease and without the necessity for changing cutters, etc.
To this end we construct a tool comprising, as described in the specification of
the said former patent, a hollow spindle the upper part of which is adapted to
fit into the socket of an ordinary drilling machine spindle, for example, the
lower end being screwed to receive an expander, preferably of the Dudgeon
type, and a taper centre piece or drift carried by a hollow bush in the spindle and
adapted to revolve with the expander rollers and to be raised or lowered through
the medium of a hand wheel upon the spindle. The beader is also fitted to the
tool in the manner described.
In order, however, to enable the cutting or trimming operation to be success-
fully effected with ease we provide a second hand-wheel upon the externally
screw-threaded spindle, the said hand-wheel carrying the cutter which works in
a slot in the expander and is operated through the medium of the hand wheel.
To enable the invention to be fully understood we will describe it by reference
to the accompanying drawing, in which;-
-
Figure 1 is a vertical section of apparatus for expanding, cutting and beading
the ends of tubes, having our improvements applied thereto :
Figure 2 is a section on the line 2-2 Figure 1; and
Figure 3 is a vertical section on the line 3-3 of Figure 2 shewing the beading
tool:.
a is the hollow spindle the upper end of which is adapted to fit into the socket
of an ordinary drilling machine spindle or into a ratchet brace and b is the
expander, here shewn of the Dudgeon type, which is fitted to the lower end of
the said spindle a. c is the taper centre piece or drift carried at its upper end
in the hollow bush d fitted in the interior of the hollow spindle a, the said drift
being adapted to revolve with the rollers of the expander and to be raised or
lowered upon the hollow spindle a through the medium of the hand-wheel
which is provided with a sleeve f to which the hollow bush is secured by the
key or cotter 9 passing through the slotted portion a¹ of the hollow spindle a.
h is the second hand-wheel which is mounted upon the lower part of the
externally screw-threaded hollow spindle a and i is the cutter, the said cutter
being adapted to run in a slot or groovej formed in the lower part of the said
spindle a and in the expander and being held in the wheel h by means of a ring k
e

page_text: which is screwed to the underside of the said wheel and passes into a notch
in the outer edge of the cutter as clearly shewn in Figure 1.
The beading tool m, shewn in Figures 2 and 3, is secured to the expander in
the usual manner, being held in the recess provided for it by means of the set
screw m². In lieu of the beading tool m shewn we can employ any other suit-
able type of tool such for example as a roller beading tool of the kind known
as the Wicksteed beader.
A tool constructed in this manner is operated as follows:-The hollow
spindle a being fitted into the socket of a driling machine, or into a ratchet
brace, for example, the drilling machine or ratchet brace is put into motion so
that the spindle a is rotated. The attendant then grips the hand wheel e in
connection with the central taper piece or drift c which is thereby forced down-
wards so as to press the rollers of the expander outwards and expand the tube
end in the well known manner. When the expanding operation is finished
the attendant releases the hand-wheel e and withdraws the expanding drift after
which he approaches the cutter to the tube end by grasping the second hand-
wheel h so as to cause the said hand-wheel to run down the hollow spindle and
the cutter to trim the end of the tube. After the trimming operation is per-
formed the cutter is withdrawn and the beader is advanced against the trimmed
tube end by means of the feed mechanism of the drilling machine or ratchet
brace.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. In apparatus of the kind described for expanding, cutting and beading
tubes, mounting the cutter in an independent hand-wheel which is screwed
upon the lower end of the hollow spindle, substantially as, and for the purpose,
herein before described.
2. A tool for expanding, cutting and beading the ends of tubes, consisting of
the parts combined, arranged and operating, substantially as herein before
described and illustrated in the accompanying drawing.
Dated the 9th day of November 1800
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicants.