Improvements in Milling and Shaping Machines.
Year: 1891

page_text: Date of Application, 18th Aug., 1891-Accepted, 17th Oct., 1891
COMPLETE SPECIFICATION.
Improvements in Milling and Shaping Machines.
I, THOMAS OWEN BATES of Well Street Tunstall in the County of Stafford
Engineer 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 :-
My present invention relates to milling and shaping machines and has for its
object to construct a machine which may be used as a shaping machine and by
simple mechanical means may be altered into a milling machine or visa versa to
attain which I arrange and construct my improved machine in the manner set forth
in the accompanying sheet of drawings in which
Fig. 1 is a back elevation of one form of my improved machine arranged with a
shaping head and
Fig. 2 is an end elevation of the same.
Fig. 3 is a back elevation of my said improved machine when altered so as to
receive a milling head and
Fig. 4 is an end elevation of said milling machine.
Fig. 5 is a back elevation of my improved machine arranged with a milling and
shaping head combined in one saddle and
Fig. 6 is an end elevation illustrating a modified mechanical means for driving
the milling spindle and
Fig. 7 is a transverse sectional elevation on line 2. z of said Fig. 6.
Similar letters and numerals of reference denote corresponding parts in each
view.
Referring to Figs. 1 and 2 the bed A of the machine is constructed in the
ordinary way and has mounted upon it a specially formed saddle B arranged with a
groove capable of receiving either a shaping head or ram C (Figs. 1 and 2) or a
milling head D Fig. 3.
An ordinary feed screw F is arranged to extend the length of table A and passes
through a nut hereinafter referred to.
The table A is arranged with an ordinary apron G¹ and work table G which are
adjustable both vertically and longitudinally by means of hand wheels and screws
in the usual way.
The saddle B and shaping head or ram C are fed horizontally along the table A
intermittently in accordance with the stroke of the ram C by means of the following
mechanism.
A driving cone H works a back shaft J by means of spur gearing ¹ and h². On
the said shaft J is a pinion L which drives a spur wheel M which latter may be
cast in one with a hollow shaft m' bearing in the saddle B and arranged with a
disc which acts as a collar and receives a pin n¹.
The said pin n' carries the end of a rod N and the opposite end of the latter is
coupled up to a lever O arranged with a feed pawl of working in a suitable ratchet
wheel P secured to a pin pl which latter also receives a spur or ratchet wheel P
which gears with a wheel made with or fixed to a nut bearing in or against the
underpart of the saddle B in order to force the same one way or the other along
the table A.
The shaping head or ram C is reciprocated within the saddle B by the following
mechanism.
A pin mis secured to the face of the wheel M and bears in a nut O' arranged
to slide in a rocking arm or lever o³ which is pivotted at o' to a part of the
saddle B.
The said rocking arm o³ is coupled up to the shaping head or ram C by a rod Q¹
which works the head C in the ordinary manner.

page_text: When the machine is required to be worked as a milling tool the shaping head
or ram C together with the rocking arm or lever o connecting rod Q' and part of
the intermittent feed motion N O and P are removed and a milling head D is placed
in the groove b¹ of saddle B.
The said milling head D is arranged with a spindle d' working in ordinary
adjustable conical bearings K and the spindle d' is adjustable laterally by means of
nut or nuts (1.
The said milling head is also provided with a nut and screw for transverse
movement as hereinafter described and shown at Figs. 1 and 2.
The upper part of milling head D is arranged to receive the adjustable centre
stay S arranged with an ordinary poppet, fed by a screw and carrying a centre
bits. The milling tool or cutter being placed in position in the usual way.
The spindle d' may be driven from the shaft J by means of pinion L gearing
with the wheel M which latter gears with another pinion U carried on a shaft
bearing in the paddle and receiving at its opposite end a wheel V which gears with
a wheel the latter driving a shaft to which is secured a bevel wheel w.
The said bevel wheel w drives a bevel wheel to which is secured to the spindle
and is kept in gear by a spring w¹ or its equivalent and may be moved in and out
of gear along the spindle d' by any ordinary mechanical means.
Instead of the driving gear being arranged as herein just before described the
spindle d' may be driven as shown at Fig. 6 in which arrangement I secure a bevel
wheel y to a shaft J the said wheel y¹ being geared with a wheel y driving thereby
the shaft at an angle and gearing with the spindle d' by a pair of bevel wheels y
and y' as shown. The whole of said gearing being carried by a bracket and
either the bevel wheel y¹ or y² being constructed so as to slide on the shaft J
or shaft and kept in gear by a spring and forced out of gear by a lever x*
(Fig. 7).
When using a milling head D as shown Figs. 3 and 4 the saddle B is fed along
transversely by the arrangement illustrated at Figs. 1 and 2 that is to say at the
end of the back shaft J is a cone j¹ which drives another cone to the shaft or
spindle of which latter is fastened a worm w meshing with.a worm wheel w' and
driving a shaft w².
At the opposite end of said shaft w is another worm which drives a worm
wheel w secured to the end of the screw feed shaft F.
The worm to may be lowered out of gear with the worm wheel w' at the will of
the operator so as to stop the transverse feed when required.
Referring to Fig. 5 the saddle B is arranged so as to receive both a shaping head
or ram C and a milling head D in which case when it be required to shape it is
only necessary to slide the bevel wheel y¹ or y' (Figs. 6 and 7) and the worm 10³
(Fig. 2) out of gear when my improved machine may be used as a shaping tool
and when it be required to use the machine as a milling tool it is only requisite to
slide the pinion L out of gear and gear up the bevel wheel y¹ or y' and the worm w³
when the said machine may be used as a milling machine.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is-
1. The combination in a milling or shaping machine of a saddle or saddles B
arranged with one or more slides and receiving either separately or combined
milling and shaping heads operated substantially as described and illustrated in the
drawings annexed.
For H. F. BOUGHTON, M.I. Mech. E.,
W. Greenwood,
London, Sheffield, and Barnsley.