UNITED STATES PATENT OFFICE
FREDERICK WUEST, OF LAWRENCEBURG, INDIANA, ASSIGNOR
TO GEORGE H. BISHOP & CO., OF SAME PLACE.
TENON OR BACK SAW.
SPECIFICATION forming part of Letters Patent No. 607,107,
dated July 12, 1898. Application filed February 28,1898.
Serial No. 671,916. (No model)
To all whom it may concern:
Be it known that I, FREDERICK WUEST, a citizen of the
United States, and a resident of Lawrenceburg, in the
county of Dearborn and State of Indiana, have invented
certain new and useful Improvements in Tenon or Back
Saws, of which the following is a specification.
My invention relates to tenon or back saws. Its object
is to provide an adjustable back for the saw-blade,
whereby the blade may be adjusted to any position desired
in the back, so as to act as a gage for cutting gains
or tenons of uniform depth of shoulder, the adjustable
feature of the back also permitting the use of a blade
having teeth upon its opposite edge either of the same
or different size, so that the saw may be used longer
without sharpening or may be used for coarser or finer
work, as desired. These objects I attain by the means
illustrated in the accompanying drawings, in which-
Figure 1 is a side elevation of a saw constructed according
to my invention, the blade being adjusted to bring the
cutting-teeth upon both sides of the back. Fig. 2 is
an inside elevation of one side of the back, with the
front connecting-bar in section. Fig. 3 is an inverted
plan view of the saw shown in Fig. 1.
to the parts, which are indicated by similar reference-letters
wherever they occur throughout the various views, A is
the handle, which may be of any approved construction,
but preferably having the straight under edge, as shown,
in practically the same plane as the lower edge of the
back. This handle has a mortise back from its front edge,
open at the lower side to receive the inner end of the
back B, both sides of which are slotted at their inner
ends to pass over a clamping-bolt C and a screw d, which
pass transversely across the mortise, the bolt C being
provided with a tail-nut c to clamp the back-bars firmly
between the sides of the handIe. The front or forward
ends of the bars B B are united by a bar b, which is of
the same gage as the saw-blade E and toothed upon the
inside to engage the teeth e upon the end of the blade.
These teeth or detents retain the forward end of the blade
in any position set, while the rear end is clamped tightly
by the tail-nut and bolt c and C.