Improvements in or applicable to Milling Machines.
Year: 1894

page_text: Complete Specification Left, 22nd Dec., 1894-Accepted, 26th Jan., 1895
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Milling Machines.
We, MARIA HATTERSLEY, ADA MARY HATTERSLEY and ROBERT LUND
HATTERSLEY, of Woodsend Works, Flixton, in the County of Lancaster, all of
the Firm "Executors of Robert Hattersley "Printers Engineers, do hereby
declare the nature of the said invention to be as follows:-
Our invention relates to milling machines or tools in which a rotary "cutter
acts to cut and shape metals to the required form.
"
In ordinary milling machines, there is a driving spindle with speed pulleys and
gearing similar to those of the "fast" headstock of a lathe, and one end of the
mandril or shaft carrying the toothed cutter or mill is carried and rotated by the
end of the driving spindle and the other end of the mandril for the toothed cutter
or mill is carried by a centre secured in an arm or bracket adjustable upon and
secured to a projecting arm from the frame of the machine.
There are also slides to carry and bring the article to the required position to
be operated upon by and move it against the toothed cutter or mill, which slides
carrying the article can be moved and adjusted in a line at a right angle to the axis
of the mandril and in its lengthway or as required.
The object of our invention is not only to be able to cut by the mill or cutter
and do all work that can be done by the ordinary arrangement of mill or cutter but
to work mills or cutters at a right angle to the ordinary mill or cutter and also to
place it at any required angle in a vertical plane.
By this means a greater range of work is capable of being done by the machine
and at angles which is not possible with the milling machine of ordinary
arrangement.
In carrying out our invention an arm or bracket is used which is adjustable upon
and can be secured to the said projection from the frame of the machine as herein-
before mentioned.
This arm or bracket has a bearing in it to carry the end of a shaft or mandril,
the other end of which is secured in and is rotated by the driving spindle.
To the said arm or bracket another bracket (hereinafter called the swivel
bracket) is secured so that it may be rotated round the said shaft or mandril and
then secured to the said arm or bracket when adjusted in the required position by
screws passing through a slot concentric with the shaft or mandril which has a key
groove in it so as to rotate a worm having a key in it on the shaft or mandril,
which worm is kept from moving endways by connection with the swivel bracket
which carries the bearings of a shaft or spindle upon either end of which the mill
or toothed cutter is or may be secured.
The middle of this shaft or spindle in the swivel bracket has a worm wheel
secured upon it that gears with the said worm.
By this means rotary motion is imparted to the shaft or spindle carrying the
milling cutter in whatever position or angle it may require to be placed round the
first named mandril or shaft rotated by the driving spindle.
If desired skew bevel or other gearing may be substituted for the worm and
worm wheel.
Dated this Seventh day of April 1894.
PETER J. LIVSEY,
Agent.

page_text: Improvements in or applicable to Milling Machines.
We, MARIA HATTERSLEY, ADA MARY HATTERSLEY and ROBERT LUND
HATTERSLEY, of Woodsend Works, Flixton, in the County of Lancaster, all of
the Firm "Executors of Robert Hattersley" Printers 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:
Our invention relates to milling machines or tools in which a rotary "cutter
acts to cut and shape metals to the required form.
"
In ordinary milling machines, there is a driving spindle with speed pulleys and
gearing similar to those of the "fast" headstock of a lathe, and one end of the
mandril or shaft carrying the toothed cutter or "mill" is carried and rotated by
the end of the driving spindle, and the other end of the mandril for the toothed
cutter or "mill" is carried by a centre secured in an arm or bracket adjustable upon
and secured to a projecting arm from the frame of the machine.
There are also slides to carry and bring the article to the required position to
be operated upon by and move it against the toothed cutter or "mill," which slides
carrying the article can be moved and adjusted in a line at a right angle to the axis
of the mandril and in its lengthway or as required.
-
or cutter
or cutter
The object of our invention is not only to be able to cut by the "mill "
and do all work that can be done by the ordinary arrangement of "mill
but to work "mills" or cutters at a right angle to the ordinary “mill” or cutter and
also to place it at any required angle to a vertical plane.
By this means a greater range of work is capable of being done by the machine
and at angles which is not possible with the milling machine" of ordinary
arrangement.
In carrying out our invention, an arm or bracket is used which is adjustable
upon and can be secured to the said projection from the frame of the machine as
hereinbefore mentioned.
This arm or bracket has a bearing in it to carry the end of a shaft or mandril,
the other end of which is secured in, and is rotated by the driving spindle.
To the said arm or bracket, another bracket (hereinafter called the swivel
bracket) is secured, so that it may be rotated round the said shaft or mandril, and
then secured to the said arm or bracket when adjusted in the required position by
'screws passing through a slot concentric with the shaft or mandril which has a
key groove in it so as to rotate a worm having a key in it on the shaft or mandril,
which worm is kept from moving end ways by connection with the swivel bracket
which carries the bearings of a shaft or spindle upon either end of which the
"mill or toothed cutter is or may be secured.
"3
The middle of this shaft or spindle in the swivel bracket has a worm wheel
secured upon it, that gears with the said worm.
By this means rotary motion is imparted to the shaft or spindle carrying the
milling cutter in whatever position or angle it may require to be placed round the
"first named mandril or shaft rotated by the driving spindle.
If desired skew bevel or other gearing may be substituted for the worm and
worm wheel.
Fig. 1, is a side elevation of so much of a milling machine as will be necessary to
explain our improvements shown applied thereto.

page_text: Fig. 2, is an end elevation of some of the parts shown in Fig. 1, and
Fig. 3, is a plan view of the swivel bracket carrying the shaft or axis of the
mill
"
or cutter.
a, is part of the headstock of an ordinary milling machine; b, is a part of the
driving pulleys; b', the spindle driven by the pulleys; c, the arm projecting from
the headstock; d, the bracket which has a hole in it to fit upon the projection c,
the eye for which is cut so that the two sides may be drawn together by bolts or
screws d', so as to cause it to firmly grip the projection c, when adjusted.
The lower end of the bracket d, has a hole or bearing for one end of the spindle
or mandril e, the cone end of which enters the taper hole in the axis of the
headstock spindle 6, and fits so tight in the ordinary manner as to be rotated
therewith.
"
or cutter.
and, are ordinary slide carriages on the upper slide of which the article is
secured, which is to be operated upon by the "mill
These compound slides fand f, have all the usual adjustments and can be
moved, and if desired self-acted in the direction of the lengthway and across the
spindle or mandril, e.
All the parts of the drawings above referred to by letters are well known parts
of milling machines or tools arranged and operating in an ordinary manner.
According to our invention, the ordinary bracket d, is modified or prepared so
as to have another bracket, herein before called the swivel bracket g, secured to it,
and the mandril or spindle e, is formed with a screw or worm thread el, upon it,
which is arranged to gear with a worm wheel g', secured upon the spindle go, which
is to carry the "mill
or cutter x.
9,
It will be seen by referring to the figures that the swivel bracket has a boss
part g2, in its centre from which there is a tubular boss g, that fits a hole in the
arm d, and the swivel bracket g, can thus turn upon this tubular boss as a centre,
and there is also a flange g³, from this boss part, which has two slots through it
(see Fig. 2) which are concentric with the axis of the mandril or spindle e, and
there is one set screw g', that passes through each of these slots to secure the
flange, and thus the swivel bracket 9, to the bracket d, in the position
required.
x, carried
This arrangement allows the swivel bracket g, and thus the "mill"
by it to be placed in any desired position round the inandril or spindle e, and the
worm wheel g', upon spindle g, will remain in gear with the worm e¹, on the
mandril or spindle e, in every position of the swivel bracket g.
The swivel bracket y, has a part cut out in its middle for the worm wheel g',
which is placed in position and the shaft or spindle 9°, is passed through its axis,
the shaft and worm being connected by a key.
The "mill" or cutter r, is placed on the screwed end of the spindle g, and is
then secured by a screw nut g. The same end of the spindle on the inner side of
the "millis coned to fit a cone bearing in the end of the tubular part of the
swivel bracket J.
The spindle y, at the other end is screwed for two lock nuts 98, one of which
comes against the end of the tubular swivel bracket g, and the other nut locks the
first one, and thus end play in the spindle g³, is prevented.
But end thrust in the spindle 9, is resisted by the point of a set screw g³, in a
cross bar g, froin projections from the swivel bracket g, which comes against
the end of the spindle the set screw 9, being secured when adjusted by a lock nut.
gb, is a tubular bush coned and screw threaded on its exterior to screw into the
screw tapped hole in the end of the boss part upon which the swivel bracket g,
turns. This screw bush gb, is slit in its lengthway, see Fig. 3, and when screwed
in position it forms the bearing for the end of the spindle e, and resists its end
thrust, as its end comes against a shoulder on the spindle e.
The slit in the lengthway of the cone screw 9b, allows it to tighten upon the
end of the spindle, as it is screwed in so that it can be adjusted to wear in
the bearing.
:

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is.
1. In milling tools or machines, the combination with the driving spindle or
mechanism of a swivel bracket, carrying a spindle or shaft having a "mill" or
cutter upon it which swivel bracket can be placed and secured in any required
position with the axis of the mill shaft in a plane at a right angle to the axis of
the driving spindle (e) and remain in gear with such spindle or shaft (e) in
every position, substantially as herein before described and illustrated by the
drawings.
2. The combination of milling mechanism so arranged that a "mill" or cutter
can be used in the ordinary manner, that is to say, with the "mill" or cutter on a
spindle corresponding to the spindle e, and can have mechanism added that will
enable the "mill " to be used at any desired angle in a plane at a right angle
to that in which the "mill" is used in the ordinary milling machine or tool,
substantially as herein before described and illustrated by the drawings.
3. The combination and arrangement of milling tools or machines, substantially
as and for the purpose hereinbefore described and illustrated by the drawings.
Dated this 21st day of December 1894.
PETER J. LIVSEY,
Agent.