Page 111 - My FlipBook

EXCAVATORS. 107

the curve to the edge, being from one and a half to
three lines, and the edge straight. Four sizes.
In each of the foregoing the edges should expand
slightly in width.

No. 5 has a flat point with a square edge, which is
parallel with the shaft, and rises at a right angle from
it. The blade is from one-half to two and a half lines
in length, and from one-half to one line in width, with
no expansion at the edge. Six sizes, with some vari-
ety of form.
Nos. 6 and 7 are right and left excavators, with
flat points and double curves ; the first curve being

at an angle of about twenty degrees, and the other
lateral, right and left, reaching from the beginning of
the first curve to the point. The length of blade is
from one to four lines. Four sizes.
No. 8 has a crescent-shaped point, the blade rising
by a small attachment from the shaft, and making a
The edge is a regular curve, de-
right angle with it.
scribing about two-fifths of a circle, and is parallel
with the handle. The point should be perfectly
formed. Six sizes.
No. 9. The form of the point is the same as in No.

8, the difference being in the position of the blade.
the edge of which is transverse to the shaft, and rises
from it at an angle of one hundred and thirty degrees.
Six sizes.