To change the position of the blade in the back, it is
only necessary to loosen the tail-nut, draw the bars B
B slightly forward, so that the forward end of the saw
may be disengaged from the detents in the connecting-bar
B, then slide the saw-blade to the desired position with
relation to the back or take it out and invert it, if
desired, pushing the saw-blade forward until it engages
with the detents, then press the bars B, with the saw
between them, back to the position shown in Fig. 1 and
tighten up the tail-nut. The back may of course be adjusted
to the top edge of the blade, in which case the saw would
be like the ordinary tenon-saws.
It is obvious that the teeth on the back or upper side
of the saw may be omitted, if desired, if the back is
only to be used as a gage for the depth of the tenon or
gain to be cut.
What I claim as new, and desire to secure by Letters
Patent, is—
1. In a tenon-saw the combination of the handle having
its front end mortised or grooved, a guide-screw, a
clamping screw and bolt crossing the mortise in the
handle, the back consisting of two bars slotted at their
inner ends to pass over the clamping and guide bolts
in the handle and having its outer end united by a bar
notched upon its inner edge, and the saw-blade having
its end toothed to engage the notches in the uniting-bar
of the back, substantially as shown and described.
2. The handle mortised or grooved at its forward end,
having.guide-screw and clamping-bolt crossing said mortise,
the back slotted at its inner end to pass over the clamping-bolt
and guide-screw and having its connected bar at the
front end provided with teeth, and the saw-blade having
teeth on both edges and end, substantially as shown
and described.
FRED WUEST.
Witnesses:
Warren Tebbs,
Frank Nehls.
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