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19S,78r
the wheels B B upon the return of the ma-
chine.
I do not propose to cut the whole depth of
the ditch at once passing over it, but to cut
the full depth of the flanges of the wheels
each time, passing back and forth until it is
the required depth, or equal to one-half the
diameter of the said wheels.
I claim-
1. In combination with the frame A the bent
axles 1 1 and arms l' l', provided with toothed
segments m m and rod o, having worms or
screws a n and crank or handle o', substan-
tially as and for the purpose set forth.
2. The endless apron or carrier D, having
one of its rollers provided with a gear-wheel,
a, in combination with the gear-wheel b, shaft
c, sliding bar d, lever e, shaft h, having the
gearing yg' i, and gear-wheel j upon the ditch-
ing-wheels B, substantially as and for the
purpose set forth.
In testimony that I claim the foregoing as
my own invention I affix hereto my signature
in presence of two witnesses.
MATTHEW JONES AUSTIN.
Witnesses:
J. A. PAScHAL,
H. G. EvANs.