Improvements in Knives for Mowers and Reapers.
Year: 1894

page_text: Date of Application, 16th Jan., 1894-Accepted, 17th Feb., 1894
COMPLETE SPECIFICATION.
Improvements in Knives for Mowers and Reapers.
1, DEWANE B. SMITH, of the Town of Deerfield, County of Oneida and State
of New York, in the United States of America, Dealer in Agricultural Implements
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to knives for mowers and reapers, having a channel on
the same near the cutting edge thereof, and other features, as will be hereinafter
set forth.
Fig. 1 of the accompanying drawings represents a face view of a knife or
"section" for a mower or reaper embodying my invention.
Fig. 2 represents a back view of the same knife or "section."
Fig. 3 represents a section on line æ æ of Fig. 1.
Fig. 4 represents a section of a portion on line y y of Fig. 1 on an enlarged
scale.
Fig. 5 represents a view of a portion of a knife having scallops or serrations,
different from those shown in Figs. 1 and 2.
Fig. 6 represents a knife or "section" embodying my invention in a slightly
modified form.
Fig. 7 shews a form of construction embodying my invention having a plain or
straight cutting edge.
Fig. 8 represents a section of a knife embodying another modified form of my
invention.
Similar letters of reference indicate corresponding parts in the several figures.
Referring to the drawings and letters of reference marked thereon, in a more
particular description, A desiguates a mower knife having tapering sides and
provided with openings for connection with a cutter-bar. On the upper face of
the knife within the cutting edges, are channels B, B, the same extending parallel
with said edges and leaving the bevelled surfaces C, which extend from said edges,
to the outer walls of said channels.
It will be seen that in sharpening the knife, the stone or sharpening device, as
shown in Fig. 4, rests flat upon the bevelled surfaces C and near the walls of the
channels B and projects over said channels, as also shown in Figs. 6 and 8, by
which provision a less surface of the knife is in contact with the sharpening device,
and the sharpening operation is performed with ease, facility, correctness and
uniformity, and a sharper edge may be produced; the knife also being lighter and
less expensive, owing to the saving of metal effected by the channels.
The cutting edges may be serrated or scalloped when edges of such kind are
required, say,
for heavy work; the serrations or scallops extending into the back
of the knife, as shown in Figs. 2 and 3, so that as the cutting edge wears away, the
serrations or scallops are preserved.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. A mower knife having a bevelled upper edge and a channel in the rear of said
edge parallel therewith, the top of the rear edge of the wall of said chanuel
being in the plane of the bevelled edge, said parts being combined substantially as
described.

page_text: 2. A mower knife having a cutting edge and channels in its upper face parallel
with said edge, substantially as described.
3. A mower knife having a bevelled cutting edge on the plane of one of its lower
faces, and a channel on its upper face parallel with said edge, said channel being
back of the inner portion of the bevelled cutting edge, substantially as described.
4. A mower knife having tapering sides with bevelled upper edge forming a
cutting edge on the plane of the lower face, and provided with a channel on the
upper face parallel with and in rear of the bevelled portion of said face, said cutting
edge having serrations or corrugations thereon which extend into the lower face of
the knife back of said channel, substantially as described.
5. The construction of knife having the peculiar cutting edge, substantially as
shown and described for the purposes set forth.
Dated this 16th day of January 1894
DEWANE B. SMITH,
By R. Haddan,
Of the Firm of Herbert Haddan & Co.,
18, Buckingham Street, Strand, London,
Agent for Applicant.