Year: 1853

page_text: Drawings hereunto annexed, in which the same letters indicate the
same parts in cachi.
Fig. 1, is a view of the upper side of the blade of an instrument
for shearing sheep. It may be of any convenient length, as from 4
to 6 inches long, and from 1 to 2 inches broad or thereabouts, and 5
of sufficient strength not to bend under moderate hand pressure.
It is held at the end A, and the other end B is toothed, each tooth
forming an acute angle having a complete cutting edge on either
side, and continued from tooth to tooth at the base of each angular
tooth.
These teeth may be of any convenient number and size,
according to the nature of the work to be performed, B being the
upper side, the teeth are to be sharpened on the under side B¹,
where the sides of each tooth will appear bevelled, & the upper
side plain and level, by which arrangement the cutting edge being
elevated never comes in contact with the skin, whether shorn on or
off the animal. A, B, C, is a sectional side view of the same.
Fig. 2, is a view of the upper side of a single blade B, having a
handle at C, and carrying the serrated disc D; E, is a view of the
under side of the same instrument; F, being the screw by which
the disc is attached to the blade and revolves thereon. This may
likewise be used for sheep shearing. When flat next the skin and
pressed against the roots of the wool, then moved by the handle
alternately from right to left, it acts like scissor blades in cutting off
all the wool immediately within the range of the teeth on both
sides of the angular pointed blade B, and may therefore be called
rotatory scissors."
Fig. 3, is a perspective view of an instrument suitable for clipping
orses. The blade A, B, may be 4 to 6 inches long, and from 1 to
of an inch wide or thereabouts, as may be found most convenient;
, is the handle slightly elevated by the bend A in the steel,
nabling the operator to lay the blade flat and even on any surface.
The upper side A, B, of the blade is cut at right angles with fine
ngular indentations, similar to a cabinet maker's tooth plane iron,
that when ground on both edges at the under side B¹, B¹,
the

page_text: two edges viewed on the upper side B, B, will present a serrated
appearance. G, enlarged sectional view.
Fig. 4, is a section, No. 1; a perspective view, No. 2; and a plan,
No. 3, of an instrument of thin crimped steel forming a cutter by
5 having by having the angular cut B, B, given to it, and can be
sharpened by one straightforward motion of a sharpening stone;
No. 2, affords an under side view; and it will be observed that when
turned over that the cutting edge at the base of each tooth will be
raised above the surface to be passed over.
Cutters on this
principle may be backed with iron, and set in any machinery in-
tended to be worked over fields of grass wheat or other growing
crops intended to be mowed or reaped thereby.
I would observe, the principle of these various cutters is the same
throughout; namely, an angular tooth, a cutting edge at the base of
each tooth, and a mode of sharpening the teeth & applying them
to their work, which precludes their cutting too close in whatever
operation employed; also, that the principle of this cutting instru-
ment can be applied from a small up to large scale, and is even
adapted for agricultural purposes.
Having thus particularly described the nature of my said In-
vention, I do declare my claims to be,—
First, the peculiar construction of cutting instruments having
angular teeth on one blade, the cutting being effected at the apex
of an acute angle between such angular teeth as described.
Second, the application of a serrated circular disc to a single
lade, pointed or toothed, acting as described; and,
Third, the peculiar construction of crimped steel cutters for
gricultural purposes as described.