APPARATUS TO ADAPT A LATHE FOR SLOTTING SHAPING OR PLANING METAL OR OTHER HARD SUBSTANCE
Year: 1884

page_text: I, CHARLES THOMPSON of Ardagh House near Kingscourt in the County of
Cavan Ireland Brick manufacturer do hereby declare the nature of my invention.
for APPARATUS TO ADAPT A LATHE FOR SLOTTING SHAPING OR PLANING METAL
OR OTHER HARD SUBSTANCE to be as follows:-
To enable an ordinary metal. Turning Foot or Power Lathe to be used for
Slotting or Shaping metals &c.
I attach to the Lathe bed a Bracket having two faces at right angles. One face
is bolted on the Lathe Bed the other stands vertically at right angles to it-The
front of this face has a saddle on it which can move up and down. Inside the
vertical face there is an upright screw A nut working on this screw is attached
to the saddle The upper part of the screw has two pullies which turn on it.
Between these pullies is a clutch which is on a feather key on the upper part of
the screw.
This clutch by means of striking gear attached to the saddle is moved
up or down and so gears with one or the other of the pullies-The pullies are
driven by means of bands & leading pullies from the pullies on the headstock
One of the bands is crossed so that the pullies on the screw are driven in opposite
directions On the front of the saddle a Tool box is bolted. The work to be cut
or shaped is fixed on the slide rest.
The Lathe pullies being driven the screw revolves first in one direction till the
striking Gear moves the clutch up or down when it revolves in the opposite
direction Thus the saddle with Tool box & tool moves up & down slotting or
shaping the work The feed is given by means of a rod acting on a paul & a
toothed wheel on the screw of the slide rest The rod being moved as required by
a stop on it & one on the saddle.

page_text: 1 CHARLES THOMPSON of Ardagh House near Kingscourt in the County of
Cavan Ireland Brick manufacturer, do hereby declare the nature of my invention
for APPARATUS TO ADAPT A LATHE FOR SLOTTING SHAPING OR PLANING METAL
OR OTHER. HARD SUBSTANCE and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:―
To enable an ordinary metal turning Foot or Power, Lathe to be used for slotting
or shaping metals &c I attach to the Lathe Bed a Bracket having two faces at
right angles One face is bolted on the Lathe Bed the other stands vertically,at.
right angles to it The front of this face has a saddle on it which can move up
and down Inside the Vertical face there is an upright screw A nut working on
this screw is attached to the saddle The upper part of the screw has two pullies
, which turn on it Between these pullies is a Clutch which is on a feather key on
the upper part of the screw. The Clutch by means of striking Gear attached.to
the saddle is moved up or down & so Gears with one or the other of the pullies
The pullies are driven by means of bands & leading pullies from the Pullies on the
Lathe headstock One of the Bands is crossed so that the pullies on, the screw are
driven in opposite directions On the front of the saddle a Tool box is bolted
The work to be cut or shaped is fixed on the slide rest.
The Lathe pullies being driven the screw revolves first in one direction till the
striking Gear moves the clutch up or down when it revolves in the opposite
direction Thus the saddle with Tool box & Tool moves up & down slotting or
shaping the work.
The feed can be given by means of a rod acting on a Paule & a toothed wheel
on the screw of the slide rest. The rod being moved as required by a stop on it
& one on the saddle Or the feed can be given by hand as in turning.
In some cases to make the apparatus more simple I only use one pully on the
upper part of the screw & two leading pullies I then reverse the motion of the
saddle by reversing the driving shaft of the Lathe by means of the Foot treadle
thus doing away with the Clutch & Striking Gear.
"
I also in some cases drive the screw direct from the main driving wheel on the
treadle shaft over leading pullies instead of from the pullies on the Headstock of
the Lathe.
The accompanying Drawing shews my Apparatus fitted on a Lathe. Bed.
Fig 1 is a side elevation Fig: 2 is a Plan & Fig 3 is an end elevation:
A is the Lathe Bed to which my Tool is attached B is the Bracket one Face
of which is on the Lathe Bed and the other stands at right angles to it C. is
the saddle which moves up & down on the vertical face of B. D is the upright
screw E is the nut working on this screw & attached to the saddle F. F. are
the two pullies that turn on the upper part of the screw in opposite directions.
G. is. the clutch on the feather key that is on the upper part of the screw
slide up & down on the feather key and drives the screw round when geared into
one or other of the pullies F. F. by means of the striking. gear H. I I I I are the
1
It can

page_text: -
Leading pullies that the bands run over between the pullies F. F. & the pullies on
the Headstock of the Lathe K is the Tool box bolted on the saddle with the
Cutting tool in it. Ļ is the slide rest on which the work to be cut is fixed.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the, same is to be performed I declare that what
I claim is
•
The Bracket with driving screw, nut & saddle worked up & down by means of
the Pullies and Bands whether driven from the Pullies on the Headstock of the,
Lathe or direct from the main driving wheel as described above and illustrated in
the accompanying Drawing.