IMPROVEMENTS IN APPARATUS FOR CUTTING PIPES, COLUMNS, SHAFTS, AND SUCH LIKE
Year: 1877

page_text: LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and
Company, Patent Agents, of 67, Strand, in the City of Westminster, Civil
Engineer, for the, Invention of "IMPROVEMENTS IN APPARATUS FOR CUTTING
PIPES, COLUMNS, SHAFTS, AND SUCH LIKE." A communication from abroad by
Austin Cook Wood, of Syracuse, State of New York, United States of
America.
Sealed the 20th July 1877, and dated the 16th February 1877.
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at
the Office of the Commissioners of Patents on the 16th February 1877.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Patent Agents,
of 67, Strand, in the City of Westminster, Civil Engineer. "IMPROVEMENTS IN
APPARATUS FOR CUTTING PIPES, COLUMNS, SHAFTS, AND SUCH LIKE." A com-
munication from abroad by Austin Cook Wood, of Syracuse, State of New York,
United States of America.
The improvements consist in the combination of a divided sleeve, having a
centering device, with a jointed revolving collar and cutter head carrying a cutting
tool actuated substantially for the purposes of embracing and cutting pipes, columns,
shafts, and such like, of metal or other material in their places without removal.or
otherwise. The sleeve is made to surround and to be affixed to the pipe or article
to be cut, and is divided longitudinally into two parts or semi-cylinders; the two
parts may be united by luggs and bolts, or by a hinge and luggs and bolts; the pipe is
centered in the sleeve by means of radial set screws; the collar is divided into two
sections and works in the sleeve and holds an adjustable cutter head; the various
parts may be of metal.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Great Seal Patent Office on the
14th August 1877.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Patent Agents,
of 67, Strand, in the City of Westminster, Civil Engineer. "IMPROVEMENTS IN
APPARATUS FOR CUTTING PIPES, COLUMNS, SHAFTS, AND SUCH LIKE.'
A com-
munication from abroad by Austin Cook Wood, of Syracuse, State of New York,
United States of America.
There has been a great want of a convenient and efficient means of cutting off
pipes, etc., realized by engineers, especially in gas and water works, where the
pipes are laid in the ground or elsewhere, requiring the tool to be placed thereon
without removing the said pipes. By my Invention I have produced a tool that
can be readily applied to a pipe in any position and of any size, which will quickly
.and perfectly cut off a pipe in a trench or any location without removal and without
danger of splitting, breaking, or otherwise injuring the pipe, as often happens in
cutting off in the old way with a cold chisel. Cast and wrought iron columns or
shafts can also be cut off with this tool.
The construction is as follows:-Referring to the accompanying Drawing in
which,―
Fig. 1 is an end view, and Fig. 2 a side elevation of the apparatus actuated by
means of a gearing.
Fig. 3 is the sleeve A. and collar B in section.
Figs. 4 and 5 are similar views of the apparatus actuated by means of a ratchet
wheel.
In the several Figures A is a sleeve made to surround and be affixed to the pipe
or shaft to be cut; this sleeve is divided longitudinally into two parts or semi-
cylinders, so as to be easily united over and around the article to be cut off without
being required to pass over its end; the two parts of this sleeve are firmly united
at the junction of their edges by luggs and bolts a¹, Figs. 1 and 2, or by hinge a
and lugg a', Figs. 4 and 5, or other sufficient device which holds the two parts of
the sleeve firmly together when put around the pipe to be cut. The pipe is centered
in the sleeve A by means of radial set screws S, or other equivalent devices, which
hold the sleeve firmly to the pipe in proper position to cut it, and which are operated
independently or unitedly to properly centre the pipe in the sleeve. At one end of
the sleeve A a collar B is fitted to revolve around it in proper ways, by which they
are united and the collar is guided; this collar is also divided into two sections that
are, when put on to the sleeve, united together in a similar manner to it so as to be
readily removed. To this collar a cutter head B¹ is affixed and revolves with it;
this cutter head B¹ is made adjustable so as to adjust the cutting tool to any desired
diameter or angle, it holds a cutter d that slides inward toward the centre by means
of a screw e as the metal is cut away. On the inner surface of collar B a groove R,
Fig. 3, is made to receive the rib T on sleeve A, Fig. 3, which serve as guides to
the revolving collar B, keeping the collar and cutting tool d always revolving in
the same direction. To revolve this collar and cutter head around the sleeve any
proper mechanical device may be employed, that shown in Figs. 1 and 2 being a
bevel gear to revolve the collar and cutter head, the teeth of the bevel gear on the
collar B meshing into a pinion H in said Figures which has its bearings on the
sleeve A; this construction I prefer and have generally used.
Instead of the bevel gears above described I employ a ratchet and pawl, shown
in Figs. 4 and 5, to revolve the collar and cutter head, there being a series of ratchet
teeth projecting from the periphery of the collar B, Figs. 4 and 5, into which the
pawl P works; this pawl is actuated by a lever that fits into the socket C¹, to
which the said pawl is affixed, as clearly seen in the Drawing.
It is obvious from the above description that the collar and sleeve can be taken
apart and placed around a continuous line of pipe in a trench or elswhere, and then

page_text: be secured by bolting them together. The radial set screws or other well-known
equivalent device centre the pipe within the sleeve, adjusting it properly on different
sized pipes. The cutter d is then brought into contact with the pipe so as to
make a cut as it revolves around it, and being gradually projected inward it cuts
the cylinder off.
Having thus fully described my improved pipe cutter, I claim the combination
of the divided sleeve A, having a centering device as described, with a jointed
revolving collar and cutter head carrying a cutting tool, actuated substantially as
and for the purposes specified.
In witness whereof, I, the said Herbert John Haddan, have hereunto set my
hand and seal, this Fourteenth day of August, in the year of our Lord One
thousand eight hundred and seventy-seven.
H. J. HADDAN.
(L.S.)