Lawn-Mower. Page: 2 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
UNITED STATESPATENT OFFIGK
JOSEPH CHESTER CLARK, OF SAN ANGELO, TEXAS.
LAWN-MOWER.
04,291. Speciication of Letters Patent. Patented July 21; 1I
Application filed April 4, 1914. Serial No. 829,519.)14.
To all whomit may concern:
Be it known that I, JOSEPH C. CIrK, a
citizen of the United States, residing at San
Angelo, in the county of Tom Green and
5 State of Texas, have invented. certain new
and useful Improvements in Lawn=Mowers,
of which the following is a specification.
My invention relates to rotary -lawn
mowers and more particularly to- the sta-
10 tionary blades, and has for its object the
provision of a novel form of stationary or
lower blade which is so constructed that
one of its ends will be engaged by the ro-
tating blades before contacting with the
15 main or body portion, and form a guide for
the rotary blades whereby they may contact
closely with the main or body portion of the
stationary blade insuring an easy running,
and a perfectly clean and smooth shearing of
20 the grass, and prevent any shock, grinding
or clicking when the contact is made.
Other objects and advantages such as my
improved means for clamping the blade
upon the holder frame, simplicity, efficiency,
25 freedom from. clogging, etc., will be brought
out in the following specification and illus-
trated in the accompanying drawings, in-
which:
Figure 1 is a plan view of a common lawn
30 mower fixed blade holder to which my im-
proved blade has been applied, Fig. 2 is a
similar view of the bottom side thereof, Fig.
3 is a vertical cross sectional view, and Fig.
4 is a perspective view of the stationary
35 blade detached.
Referring more particularly to the draw-
ings, the numeral 1 designates the ordinary
bar carrying the stationary blade in that .
type of lawn mower in which a plurality of
40 spiral knives rotate and contact with a fixed
blade for cutting grass. The bar 1 is pro-.
vided with the usual openings 2 for the re-
ception of the usual means for securing it
to the body or frame of the mower. This
45 bar 1 may vary in shape and size to some
extent in various makes of mowers, but is
always of a shape that will permit of my in-
vention .being applied thereto.
My improved blade comprises a main or
50 body portion 3 .formed of steel sufficiently
thin to be somewhat yieldable. The longi-
tudinal edges 4 and 5 of the blade are square
and are exactly the same on both sides,
thereby providing two cutting edges 6 and 7.
55 At the ends of the body portion 3 the blade
is provided with extensions or tongues 8 and9 adjacent the front edge 4 and rear edge
5, respectively. The tongue 8 is curved
downwardly and the tongue 9 upwardly, as
shown most clearly in Fig. 4.' Both of these 0
tongues are integral with the body portion 3
of the blade and are easily formed by cut-
ting away a portion of the material. It will
also be observed that these tongues are par-
allel with and, in fact, in alinement with the 65
longitudinal edges 4 and 5. By this con-
struction it will be obvious that the bladehas
exactly the same shape and appearance
whether in the position shown in the draw-
ings or if it be turned around or inverted, 70
and that I have thus provided a blade which
is absolutely reversible.
I preferably provide means whereby the
blade may be secured upon the bar 1 with-
out having any holes in the blade though it 75
will be readily understood That any other
suitable fastening means could be used with-
out detracting from the spirit 'of my inven-
tion.* I prefer, however, to provide the bar 1
with a plurality of holes through which to so
pass the screws 10 which engage within the
screw-threaded holes formed in the clamp-
ing plate 11 upon the lower side of the bar
1, and in practice I secure my improved
blade upon the bar 1 by passing it between 85
the bar 1 and the clamping plate 11 with one
longitudinal edge contacting, or nearly so,
with the screws 10, and then tightening the
screws 10 until the blade is held firmly.
When my blade is attached as shown and 90
described only one tongue, either the tongue
8 or 9,.will extend beyond the forward lon-
gitudinal edge 4 or 5 of the blade, and by
spacing the visible tongue from the forward
edge of the bar 1 there is formed an open- 95
ing as shown at 12. This opening- permits
dirt and trash to pass through instead of be-
ing scooped up and carried into the machine
where it would cause wear and clogging of
the parts. - 100
It will be apparent that when in the op-
eration of a mower equipped with my im-
proved blade the spiral rotating blades con-
tact with the curved tongue the yieldability
of the blade will cause it to contact evenly, 105
smoothly and snugly with the rotating
blades, thus. producing an ease of motion
and certainty of cutting unobtainable in any
other manner.. It will also be apparent that
my improved blade is reversible as both sides 110
and edges are identical. . Hence when one of
the cutting edges, for instance the edge 6 on1,1
Upcoming Pages
Here’s what’s next.
Search Inside
This patent can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Patent.
Clark, Josepsh Chester. Lawn-Mower., patent, July 21, 1914; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858344/m1/2/: accessed July 1, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.