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UNITED
STATES PATENT OFFICE
GEORGE KARRMANN, OF UNIONVILLE, ASSIGNOR TO THE UPSON
NUT COMPANY, OF FARMINGTON, CONNECTICUT.
BENCH-PLANE.
Specification forming part of Letters Patent No. 410,710,
dated September 10, 1889.
Application filed May 22, 1889. Serial No. 311,692.
(No. model.)
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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
contact only.
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
special description.
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. |
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