STATES PATENT OFFICE
GEORGE KARRMANN, OF UNIONVILLE, ASSIGNOR TO THE UPSON
NUT COMPANY, OF FARMINGTON, CONNECTICUT.
Specification forming part of Letters Patent No. 410,710,
dated September 10, 1889.
Application filed May 22, 1889. Serial No. 311,692.
To all whom it may concern:
Be it known that I, GEORGE KARRMANN, a citizen of the United
States, residing at Unionville, in the county of Hartford and
State of Connecticut, have invented certain new and useful Improvements
in Bench-Planes, of which the following is a specification.
My invention relates to improvements in bench-planes having
a device for the lateral adjustment of the cutting-bit; and
the chief object of my invention is to provide a friction-slide
and operating devices for moving the cutting-bit by friction
In the accompanying drawings, Figure 1 is a longitudinal section,
partly in elevation, of a plane which embodies my invention.
Fig. 2 is a face view of the upper portion of the frog, to which
my lateral adjustment is applied. Fig. 3 is a like view of the
same provided with different operating devices; and Fig. 4 is
a transverse section of the same, partly in elevation, on the
line x x of Fig. 3. Fig. 1 is on a smaller scale than the figures
which follow it.
The plane-stock A, cutting-bit B, holding-cap C and its attachments
may be of any ordinary construction, and therefore require no
I have herein illustrated a lever 5, which is operated by the
screw 6, for adjusting the cutting-bit B longitudinally, in
an old and well-known manner, and for which any other mechanism
for adjusting the cutting-bit longitudinally may be substituted.
In the upper end of the frog D, immediately under the cutting-bit
B, I place a friction-slide 7, which is fitted in a proper groove
or recess to slide transversely to said frog D and with its
upper face slightly projecting above the upper face of the frog
D. In Figs. 1 and 2 I operate this slide to move it transversely
to the cutting-bit by means of the laterally-adjusting lever
8, which is pivoted to the frog, as at 9, while its other end
is connected with the friction-slide 7 in any suitable manner
— as, for instance, by means of pin 10.