IMPROVEMENTS IN MACHINERY FOR CUTTING METAL TUBES, PIPES, CYLINDERS, BARS, OR SIMILAR ARTICLES, AND FOR FACING THE ENDS OR FLANGES THEREOF
Year: 1869

page_text: LETTERS PATENT to Andrew Stewart and John Wotherspoon, both of
Coatbridge, in the County of Lanark, North Britain, Tube Manu-
facturers, for the Invention of "IMPROVEMENTS IN MACHINERY FOR
CUTTING METAL TUBES, PIPES, CYLINDERS, BARS, OR SIMILAR ARTICLES, AND
FOR FACING THE ENDS OR FLANGES THEREOF."
Scaled the 2nd October 1869, and dated the 8th April 1869.
PROVISIONAL SPECIFICATION left by the said Andrew Stewart and
John Wotherspoon at the Office of the Commissioners of Patents,
with their Petition, on the 8th April 1869.
We, ANDREW STEWART and JOHN WOTHERSPOON, both of Coatbridge,
in the County of Lanark, North Britain, Tube Manufacturers, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN MACHINERY
FOR CUTTING METAL TUBES, PIPES, CYLINDERS, BARS, OR SIMILAR ARTICLES, AND
POR FACING THE ENDS OR FLANGES THEREOF," to be as follows, that is to say :-
This Invention relates to self-acting machinery designed for cutting
metal tubes, pipes, cylinders, bars, or similar articles in such a finished
manner as to require no subsequent trimming, and which is also suitable
for facing the ends or flanges of the same class of articles.

page_text: The improved machinery is provided with adjustable holders to fix the
article to be operated upon, and the cutting tools are disposed radially
on a revolving head or chuck being fed inwards automatically in a
gradual and continuous manner as the action proceeds. The tool holders
are moved inwards by radial screws, having bevil pinions on their outer
ends in gear with a bevilled frictional or toothed ring or wheel carried
loosely on the revolving head, and made to turn at a slightly slower or
quicker rate than the head by any suitable driving details. In one
convenient arrangement of such details the bevilled ring or wheel has
fixed to the back of it a spur toothed ring or wheel, in gear with which
there is a pinion on a shaft at the side, and this side shaft is driven from
the revolving head, and is provided with a friction clutch for putting the
cutter feed motion into or out of gear. The clutch is by preference a
conical one, the movable part being adjusted by a lever connected to the
framing by a right and left screw spindle, with a hand lever on it,
on turning which the engagement or disengagement of the conical
surfaces is effected. The revolving head is itself driven by spur gearing
from a side shaft, having fast and loose pulleys on it for a driving
belt, and this head may be made either with a tubular centre carried
in suitable bearings in the headstock for the tubes or bars to be entered
through it, or it may be fixed on a solid spindle, but with the tool
carrying parts sufficiently overhung to reach over as much of the pipe
or bar ends as has to be cut off.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Andrew Stewart and John Wotherspoon in the
Great Seal Patent Office on the 7th October 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, ANDREW
STEWART and JOHN WOTHERSPOON, both of Coatbridge, in the County of
Lanark, North Britain, Tube Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of April, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Andrew Stewart and John Wotherspoon,
Her special licence that we, the said Andrew Stewart and John Wother-

page_text: spoon, our executors, administrators, and assigns, or such others as
we, the said Andrew Stewart and John Wotherspoon, our executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
MACHINERY FOR CUTTING METAL TUBES, PIPES, CYLINDERS, BARS, OR SIMILAR
ARTICLES, AND FOR FACING THE ENDS OR FLANGES THEREOF," upon the condition
(amongst others) that we, the said Andrew Stewart and John Wother-
spoon, our executors or administrators, by an instrument in writing
under our, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Andrew Stewart and John. Wother-
spoon, do hereby declare the nature of our said Invention, and in what
manner the same is. to be performed, to be particularly described and
ascertained in and by the following statement in writing, reference bring.
had to the accompanying Drawings, that is to say:-
Our said Invention relates to self-acting machinery designed for
cutting metal tubes, pipes, cylinders, bars, or similar articles in such a
finished manner as to require no subsequent trimming, and which is
also suitable for facing the ends or flanges of the same class of articles.
And in order that our said Invention and the manner of performing
the same may be properly understood we have hereunto appended a
Sheet of explanatory Drawings, to be herein-after referred to, and
representing apparatus constructed with our improvements.
Figure 1 is a horizontal section, Figure 2 a side elevation, and Figure 3
an end elevation.
The improved machinery comprises various parts mounted upon a
cast-iron bench or bed frame 1, and is provided with adjustable holders
2, 3, to fix the article (4, Figure 3,) to be operated upon. The cutting
tools 5 are disposed radially on a revolving head or chuck 6, being fed
inwards automatically in a gradual and continuous manner as the action
proceeds. The tool holders 7 are fitted into radial guides upon the

page_text: chuck face, and are moved inwards or towards the centre by radial
screws 8 carried by the chuck, and having bevil pinions 9 on their outer
ends in gear with a bevilled toothed ring or wheel 10 carried loosely on
the revolving chuck, and made to turn at a slightly slower or quicker
rate than the chuck by the driving details shown and herein-after des-
cribed, or by any other suitable gearing. Frictional wheels may be
substituted for the toothed pinions 9 and wheel 10. The bevilled wheel
or ring 10 has fixed to the back of it a spur toothed ring or wheel 11,
in gear with which there is a pinion 12 on a shaft 13 at the side, and
this side shaft is driven from the revolving head or chuck 6 by means of
a pinion 14 and spur wheel 15, the teeth of which have a ratio between
them that differs slightly from that between the pinion 12 and wheel 11.
A friction clutch 16 is applied upon the shaft 13 for putting the cutter
feed motion into or out of gear, whilst a hand wheel 17 is fixed on the
shaft 13 for adjusting the tool holders by hand. The movable part 18 of
the clutch, which is a conical one, is adjusted by a lever 19 shaped to
encircle it, and connected to the framing by a right and left screw
spindle 20 with a hand lever on it, on turning which the engagement or
disengagement of the conical surfaces of the clutch is effected. The re-
volving head or chuck 6 is itself driven by spur gearing 21, 22, from a
side shaft 23 having fast and loose pulleys 24 on it for a driving belt, the
shifting fork for which is on a horizontal rack bar 25 actuated by a
pinion 26 on a shaft having a hand wheel 27 on one end of it. The
revolving head or chuck may be made either with a tubular centre 28,
as shown, carried in bearings in the head stock 29 for the tubes or bars
to be entered through it, or it may be fixed on a solid spindle with the
tool-carrying parts sufficiently overhung to reach over as much of the pipe
or bar ends as has to be cut off.
Having thus particularly described our said Invention, and the manner
in which the same is to be performed, we have to state that we do not
restrict ourselves to the precise details herein described or delineated,
but that what we believe to be novel and original, and claim as the
Invention secured to us by the herein-before in part recited Letters
Patent is,―
The arranging or combining together of the parts of machinery for
cutting metal tubes, pipes, cylinders, bars, or similar articles, and for
facing the ends or flanges thereof, substantially in the improved manner
as herein-before described.

page_text: And more particularly the applying of an automatic feed motion to
the tools to move them inwards gradually and continuously as the
cutting proceeds.
In witness whereof, I, the said Andrew Stewart, on behalf of myself
and the said John Wotherspoon, have hereunto set my hand and
seal, this Sixth day of October, in the year of our Lord One
thousand eight hundred and sixty-nine.
Witness,
EDMUND HUNT,
Patent Agent,
Glasgow.
ANDREW STEWART. (L.S.)