Improvements in the Manufacture of Knives for Mowing and Reaping Machines, and of Sections therefor.
Year: 1888

page_text: Date of Application, 24th Aug., 1888
Complete Specification Left, 23rd May, 1859-Accepted, 29th June, 1889
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Knives for Mowing and Reaping
Machines, and of Sections therefor.
We, JOSEPH HENSHAW, Senior, Blacksmith, and CHARLES FREDERICK SUTTON,
Surgeon, both of Holmes Chapel, in the county of Chester, do hereby declare the
nature of this invention to be as follows
Our invention relates to knives or sickles for mowing and reaping machines, and to
sections therefor.
Hitherto in the manufacture of such knives or sickles it has been customary to rivet
a number of triangular blades to a suitable back bar. It has been found, however,
that when the cutting edges of such blades become worn or dull they do not act very
easily upon the material to be cut, the result of which is that the straw or grass often
drags between the knife and the fingers so that the ground presents an uneven surface
and that the draught of the machine is heavy for the horses.
The object of our invention is to obviate these disadvantages, and to this end
it consists essentially in forming the cutting edges of each section of a hollow or
concave shape.
Knives having sections thus constructed exert a kind of shearing action upon the
material to be cut, so that the surface is left smooth and the draught reduced.
Dated the 24th day of August 1888
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Knives for Mowing and Reaping
Machines, and of Sections therefor.
We, JOSEPH HENSHAW, senior, Blacksmith, and CHARLES FREDERICK SUTTON,
Surgeon, both of Holmes Chapel, in the county of Chester, 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 :-
Our invention relates to knives or sickles for mowing and reaping machines, and to
sections therefor.
Hitherto in the manufacture of such knives or sickles, it has been customary to rivet
a number of triangular blades to a suitable back bar. It has been found, however
that when the cutting edges of such blades become worn or dull, they do not act very
easily upon the material to be cut, the result of which is that the straw or grass often
drags between the knife and the fingers so that the ground presents an uneven surface
and that the draught of the machine is heavy for the horses.
The object of our invention is to obviate these disadvantages, and to this end
it consists essentially in forming the cutting edges of each section of a hollow or
concave shape.
In the accompanying drawing,-
Figure 1 is a plan, and
Figure 2 is a transverse section of one
machine knife blades a a, indicating the
of the section; bb are the bolt holes,
back bar.
of our improved mowing and reaping
hollow or concave shaped cutting edge
whereby the blade is attached to the
Knives having sections thus constructed exert a kind of shearing action upon the
material to be cut, so that the surface is left smooth and the draught reduced.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
Forming the cutting edges of each section of a knife or sickle for mowing and
reaping machines of a hollow or concave shape substantially as herein before described
and illustrated in the accompanying drawing.
Dated the 23rd day of May 1880
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.