IMPROVEMENTS. IN TURNING LATHES AND IN MACHINERY OR APPARATUS USED FOR ACTUATING SUCH LATHES, PARTS OF WHICH MACHINERY OR APPARATUS MAY ALSO BE USED FOR ACTUATING OTHER MECHANISM
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by John Bateman at the Office of the
Commissioners of Patents on the 15th July 1879.
JOHN BATEMAN, of High Holborn, in the County of Middlesex.
"IMPROVEMENTS.
IN TURNING LATHES AND IN MACHINERY OR APPARATUS USED FOR ACTUATING
SUCH LATHES, PARTS OF WHICH MACHINERY OR APPARATUS MAY ALSO BE USED FOR
ACTUATING OTHER MECHANISM."
My Invention relates to turning lathes used for turning metal, wood, or other
substances, and more especially to lathes of a simple and cheap kind driven by the
foot of the operator, and it has for its object improved methods of constructing
and arranging the parts of such lathes, and of the apparatus used for actuating
them, so that they are simpler, cheaper, and more easily constructed than has
heretofore ordinarily been the case.
I make a light vertical frame of suitable material, preferably cast iron, the plane
of which stands transversely across the spindle of the lathe, and at right angles;
on one side of this frame 1 arrange a second light vertical frame attached by screws
or bolts to the first frame, so that the two together form a strong and rigid but
light stand or support, which may be provided with feet or flanges at its base,
by which if desired it may be screwed to the floor of the place where it is to
be used.
In the second frame described I make an opening within which can be fitted a
large driving pulley or wheel, provided with one or more grooves or pulleys for
a cord or band, and fixed upon a horizontal spindle or shaft revolving in two
bearings, one of which is formed in or attached to each of the two vertical frames
described. Upon the outer side of the transverse vertical frame I fix upon the
projecting end of the spindle a crank, preferably of cast iron cast upon the spindle,
and having a crank pin round which one or more grooves are formed to receive the
upper end of a connecting rod of bent iron, or other sufficiently strong wire by
which the crank and wheel are actuated.
At the lower end of the transverse vertical frame, and at a sufficient distance
from a vertical line passing through its centre I fix or fit a stud or pin upon which
is fitted and oscillates one extremity of a lever or treadle, preferably of cast iron,
the other end of which is provided with a footplate, preferably roughened upon its
upper surface. At or near the centre of this treadle or lever I arrange a pin, upon
which is fitted and oscillates the lower end of the wire connecting rod described.

page_text: I-prefer-to-crank.or_bend.out horizontally the foot plate end of the lever, so as to
bring it into a more convenient position to be worked by the foot of the operator.
-Upon-the-upper end of the transverse vertical frame I make or fix a flat
longitudinal-horizontal plate, upon the inner end of which over the wheel I make
-or-fix-a-headstock or stand provided with bearings, in which revolves a longi-
tudinal spindle provided with a small wheel having one or more grooves or pulleys,
round which passes the upper-part-of-an-endless cord_or_band which also passes
round the large wheel below.
The other end of the horizontal plate above the crank and treadle is provided
with a groove or attachment by which an adjustable tool rest can be adjusted and
fixed in any desired position.
To the outer end of the upper spindle described, I attach in the usual way by
means of a moveable faceplate, chuck, or centre, the work which is to be turned in
the lathe, thus formed, and I prefer to make the spindle tubular, so that rods or
wires upon the ends of which it may be desired to operate can be passed though it.
The end of the horizontal plate which carries the tool rest as described may be
made at a lower level than the remaining part of the plate, so that articles of
larger diameter can be turned in the lathe; and sometimes I make this part of the
plate moveable, so that it can be adjusted to any desired height, and then fixed by
screws or bolts against the side of the vertical frame, the outer end of the plate may
also in some cases be provided with a standard, in which is fitted an adjustable
centre for the purpose of carrying the outer end of the work which is being turned.
Apparatus constructed in the way described according to my Invention is very
simple and cheap, and at the same time strong and effective for the purpose
required.
Instead of the upper horizontal plate being provided with a headstock for carrying
a lathe spindle as described, it may be used for the purpose of supporting a sewing
machine, grinding or polishing wheels, circular saws, or other mechanism to which
it is desired to impart rapid revolution. Where the apparatus is. to be used as a
lathe for turning articles of great length, I sometimes arrange a second vertical
frame at a sufficient distance from that first described, and I connect the two
together by one or more longitudinal adjustable bars or plates, one of which carries
the tool rest. The second frame is not fitted with a wheel and treadle, but its
upper end is provided with an adjustable centre which supports the outer end of
the work to be operated upon.