Improvements in and relating to Wood Turning Lathes.
Year: 1899

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to Wood Turning Lathes.
We, ARTHUR KOHn, of Könneritzstrasse 117, Schleussig, Wood Turner, and
BRUNO KOHN, of Katherinenstrasse 16, Leipzig, Merchant, both in the German
Empire, 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:-
This invention relates to a lathe for turning wood or similar material. The
knife or cutter is shaped to the outline of the article which is to be produced
and rotates around the article which itself remains stationary. The knife or
cutter is caused to approach or recede from the article or blank to be operated
upon by means of a sleeve which is moved along the driving shaft.
Referring to the accompanying drawings Figure 1 illustrates partly in elevation
and partly in section those parts of the lathe which form the subject of the present
invention.
Figure 2 shows a cross section taken along the line A-B, Figure 1.
Figure 3 is a view of the sleeve by means of which the cutter is removed.
The driving shaft a has secured to it a disc b, which is connected by the rods c
with the ring d. The disc and the ring are both formed or provided with radial
guides e into which the ends of the cutter or knife f are fitted and along which
they can move so that the knife can be moved towards or away from the blank
or the like p.
The knife is operated by the following devices and in the manner described.
It has attached to it at the point gone end of a connecting rod h, the other
end of which is connected to one arm of a lever h¹. This lever is pivotted at h²
upon the disc b and its other end is attached by means of the rod h³ to the point k
upon the sleeve i. This sleeve rotates with the shaft a and the disc b and ring d,
but is capable of sliding along the shaft so that it may occupy either of the two
positions shown, that to the left in full lines when the knife is withdrawn from
the work, and that to the right in dotted lines when the knife has been fed
forward to its full extent. A handle m fits upon the sleeve i by means of the
ring and is engaged therewith by the screw o and the recess n, in such a manner
that lateral motion imparted to the handle is communicated to the sleeve, but
so that they are capable of independent rotary movement. By moving the handle
to the left or right, therefore, the cutter may be moved away from or towards
the blank.
The disc b carries a drill or similar centre q which bores a hole into the blank p
and centres it.
The blank is introduced through the ring d and is drilled and centred by
the part a. The blank is then firmly fixed, and the cutter f which rotates around it,
is caused to approach by the sleeve i being moved to the right. When enough
material has been removed from the blank the cutter is withdrawn.
h³ are projections or guides formed upon the knife ends so as to prevent jamming
in the radial guides in the disc and ring.

page_text: 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 :-
In a wood turning lathe, a knife or cutter shaped to the outline of the article
to be produced and means or devices by means of which the knife is fed backwards
or forwards, all constructed arranged and operated substantially as hereinbefore
described and as illustrated by the accompanying drawings.
Dated this Sth day of August A.D., 1899,
W. E. HEYS & SON,
Agents for the Applicants.
W. E. HEYS & SON,
Agents for the Applicants.