Improvements in and connected with Stocks and Dies.
Year: 1892

page_text: Date of Application, 15th Jan., -1892
Complete Specification Left, 7th Oct., 1892-Accepted, 19th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in and connected with Stocks and Dies.
We, ALBERT WILLARD BARTHOLOMEW of No. 2 Portland Street, Boston,
Massachusetts, Machinist, and JoHN TYLER FREEMAN of No. 4234 Washington
Street, Boston, Massachusetts, Accountant, both in the United States of America,
do hereby declare the nature of our invention to be as follows:-
The invention consists first in a device made up of a stock having a hole through
it (to receive the material to be operated upon) and tool carriers mounted on
opposite sides of the opening and adapted to be moved towards each other simul
taneously to bring the tools into contact with opposite portions of the material
operated upon. Secondly, in the combination of a tool carrying stock and chuck,
the stock and chuck being so connected together that the chuck may be held
stationary, and the stock rotated upon it, and also in certain details of
construction.
The stock is formed with a hole through its centre and is hollowed out or formed
with a recess through its entire length. A rectangular frame is free to travel in
the recess, a rod which is secured at its outer end in one of the handles, and
provided just inside the end wall of the stock with a collar, so that the rod is free
to be turned with the handle, this rod is also formed with a right and left hand
screw, one of which works in a thread cut in the end of the rectangular frame, and
the other in one of the tool carriers, the other tool carriers being made fast to the
rectangular frame, so that when the handle is turned one way or the other, the
tool carriers are simultaneously caused to advance toward or recede from each
other.
Within the rectangular frames and operation of the tool carriers are thread
cutting dies the width of which is just sufficient to fit within the frame by which
they are guided when the handle is operated.
The upper portion of the tool carriers are recessed out so as to receive cutters
which are of a dovetail form on one side and straight on the other, the said
cutters are held in place by screws.
A chuck formed at its upper end with a lip or flange, is held to the stock by two
plates each having a lip to embrace the flange of the chuck. These plates are
secured to the underside of the stock by screws. A hole is formed in the centre
of the chuck, and the chuck is formed hollow, and its wall cut away so as to receive
a rectangular frame. A rod is fitted in one side of the chuck and is held at or
about its centre by a pin that passes through a boss on the chuck; the outer end of
this rod works in the end of the rectangular frame and the other end in a jaw,
another jaw being secured to the outer end of the rectangular frame, so that when
the screw rod is operated the jaws are simultaneously moved towards or from each
other according to the direction in which the rod is turned.
The operation of my device is as follows:-
When it is to be used for cutting a thread, the jaws of the chuck are moved out
of the way, or if desired the chuck itself may be removed by detaching one of the
plates. Thread-cutting dies are then placed in the stock, and pushed back to
allow the material to be operated upon to be inserted, one of the handles is then
turned so as to bring the dies into contact with the material; the stock is then
rotated on the material, and the dies kept in proper contact therewith by turning
the said handle. When the thread is cut, the handle is turned in the reverse
direction which allows the dies to be moved away from each other, and release
the material.
When the device is to be used as a cutting-off tool, the thread cutting dies

page_text: are removed and cutters adjusted and secured to the carriers. The jaws of the
chuck are clamped on the material to be operated on, and, owing to the con-
struction and arrangement, of the chuck as above described, the material is
accurately centred for the operation of the cutters which are forced towards each
other by the right and left hand screw rod, when turned by the handle.
By clamping the device on the material it prevents the cutters from moving
sideways and making false cuts and by operating the tool carriers, simultaneously
by the movement of one handle the cutters or dies are always in proper relation to
the centre of the tool and the material being operated on, thus insuring true and
perfect working.
The handles are removable so that handles of any desired length may be employed
according to the leverage required.
Dated this 15th day of January 1892
HASELTINE, LAKE & Co,
45, Southampton Buildings, London, W.C., Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in and connected with Stocks and Dies.
We, ALBERT WILLARD BARTHOLOMEW, of No. 2 Portland Street, Boston,
Massachusetts, Machinist, and JoHN TYLER FREEMAN, of No. 4234 Washington
.Street, Boston, Massachusetts, Accountant, both in the United States of America,
do hereby declare the nature of our invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement :-
Reference being had to the accompanying drawings in which,
Fig. 1 is a plan or top view of a cutting off and thread cutting tool embodying
our invention.
Fig. 2—is a similar view looking at the underside.
Fig. 3 is a plan or top view with the top plate and chuck removed.
Fig. 4 is a vertical longitudinal section through the tool.
Fig. 5 is a plan or top view showing, the tool adapted for cutting off.
Fig. 6 is a plan or top view of the chuck.
Fig. 7 is an end view of one of the tool carriers.
The invention consists first in a device made up of a stock having a hole through
it (to receive the material to be operated upon) and tool carriers mounted on opposite
sides of the opening and adapted to be moved towards each other simultaneously to
bring the tools into contact with opposite portions of the material operated upon.
Secondly, in the combination of a tool carrying stock, and a chuck, the stock and
chuck being so connected together that the chuck may be held stationary and the
stock rotated upon it, and also in certain details of construction as hereinafter fully
described and pointed out in the claims.
In the drawing A, represents the stock formed with a hole a, through its centre,
and is hollowed out or formed with a recess a'. B, is a rectangular frame that is
free to travel in the recess a'. C, is a rod secured at its outer end in the handle A',
and provided just inside the end wall of the stock A, with a collare (see Fig. 3 and 4)
so that the rod is free to be turned with the handle; this rod is also formed with a
right and left hand screw one of which works in a thread cut in the end of the
frame B, and the other in the tool carrier D, the otlier tool carrier D', being inade
fast to the frame B, so that when the handle A', is turned one way or the
other, the tool carriers are simultaneously caused to advance toward or recede
from each other.
E, E, are thread cutting dies the width of which is just sufficient to fit within
the frame B, by which they are guided when the handle A, is operated.
The upper portion of the tool carriers D, D', are recessed out so 'as to receive the

page_text: cutters F, which are of a dove-tail form on one side (see Fig. 7) and straight on
the other.
Pran
The said cutters are held in place by screws f. f. The chuck G, is formed at
its upper end with a lip or flange g (see Figs. 2 and 4) and is held to the stock A,
by two plates H, H, each having a lip to embrace the flange g, these plates are
secured to the underside of the stock A, by screws h. A hole is formed in the
centre of the chuck, and the chuck is formed hollow, and its wall cot away so as to
receive a rectangular frame 1. J. is a rod having a right and left hand screw,
which rod is held at or about its centre by a pin, passing through a boss on the
chuck, the outer end of this rod works in one end of the frame I, and the outer
end in the jaw K, the other jaw K¹, being secured to the end of the frame I, se
that when the screw rod J, is operated, the jaws K, K, are simultaneously moved
towards or from each other according to the direction in which the rod J,
turned.
The operation of our device is as follows:
When it is to be used for cutting a thread, the jaws K, K', of the chuck are
moved out of the way, or if desired the chuck itself may be removed by detaching
one of plates H. Thread cutting dies E, are then placed in the stock A, and pushed
back to allow the material to be operated upon to be inserted, the handle A', is
then turned so as to bring the dies into contact with the material, the stock is then
rotated on the material, and the dies kept in proper contact therewith by turning
the handle A. When the thread is cut, the handle A', is turned in the reverse
direction which allows the dies to be moved away from each other and release
the material.
When the device is to be used as a cutting off tool, the thread cutting dies E,
are removed, and the cutters F, adjusted and secured to the carriers D, D'.
The jaws K, K', of the chuck are clamped on the material to be operated on,
and, owing to the construction and arrangement of the chuck as above described,
the material is accurately centered for the operation of the cutters which are forced
towards each other by the right and left hand screw rod C, when turned by the
handle A', as hereinbefore explained.
By clamping the device on the material it prevents the cutters from moving
sideways and making false cuts and by operating the tool carriers simultaneously
by the movement of one handle the cutters or dies are always in proper relation to
the centre of the tool and the material being operated on, thus insuring true and
perfect working.
The handles are removable so that handles of any desired length may be employed
according to the leverage required.
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. A stock A, having an opening a, in combination with the rectangular frame B
mounted in said stock A, the tool carriers D, D', arranged on opposite sides of the
opening a, and the right and left hand screw rod C, mounted in stock A, and
handle A', to move the tool carriers toward and away from the opening a, in the
stock substantially as and for the purpose set forth.
2. A stock A, having a central opening a, the rectangular frame B, tool
carriers D, D', mounted within said frame B, and on opposite sides of the opening a,
the right and left hand screw rod C, and handle A', for moving the carriers toward
and away from the opening a, in combination with a chuck G, the stock and
chuck being connected together so that one can be rotated on the other, the
opening a, in the stock A, being located in relation to the jaws of the chuck
substantially as shown and for the purpose set forth.
3. In a device substantially as described, the stock A, having an opening a, and
a recess a', portions of the side walls of which are parallel in combination with
rectangular frame B, having parallel sides and mounted in the recess a', and the

page_text: right and left hand screw rod C, mounted in the stock A, and connected to the
frame B, to which the carrier D', is secured, and to the carrier D, the carriers
being on opposite sides of the opening a, in the stock A, all substantially as and
...for the purpose set forth.
4. In a device substantially such as described, the carriers D, D', having a recess
to receive the cutting tool, one side of said recess being of dovetail form. in
combination with cutting tools F, having one edge of corresponding dovetail form,
and screws ff, for retaining said cutters in place substantially as shown and
described.
Dated this 7th day of October 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicants.