Plow. Page: 2 of 2
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UNITED STATES PATENT OFFICE.
CHARLES DO3MSCHKE, OF AUSTIN, TEXAS.
SPECIFICATION forming part of Letters Patent No. 259,022, dated January 10, 1882.
Application filod October 5, 1E81. (odel.)
STo all whom it may concern:
Be it known that I, CHARLES DOiMSCwrE,
of Austin, in the county of Travis and State
of Texas, have invented an Improvement in
5 Plows, of which the following is a specifica-
Figure 1 is a side view of my improved plow.
Fig. 2 is a horizontal section of the same on
the plane of the line e c, Fig. 1. Fig. 3 is a
Io front view of the same; and Fig. 4 is a back
view of the same, looking at it in the direction
of the arrow which is shown in Fig. 2.
This invention relates to an improvement in
plows, and has more.particular reference to the
15 construction of the mold-board and'to the ar-
rangement thereof relative to the plowshare.
The mold-board, instead of being carved or
concave, as usually has been the case, is, in ac-
cordance with my invention, made perfectly
2o flat, and so constructed that it projects at one
corner slightly beyond the upper edge of the
plowshare. By this means the retention of
soil on the high and narrow mold-board is en-
tirely avoided, and consequently the plow can
25 be moved through the soil with less difficulty
than if weighted by adhering soil. The flat
mold-board has the further advantage of serv-
ing to crumble the furrow-slice, whereas the
concave mold-board is apt to turn the slice over
30 without loosening it. By crumbling the slice
the flat mold-board serves to tarn the soil com-
In the accompanying drawings, the letterA
represents the plowshare; B, the mold-board;
35 C, the plow-bar' on the landside, and D the
standard or post of the plow.
The plowshare is made preferably with a
blunt point, a, lower oblique cutting-edge, b,
and with a straight side, 4, opposite the plow.
40 bar. (SeeFig. 2.) Thefaceof the plowshare
is slightly concave from its point to its top or
rear, as clearly indicated in Figs. 1 and 4.
The upper edge, e, of the plowshare is prefer-
ably straight and somewhat inclined toward
45 the line b.
The mold-board B is made of a piece of en-
tirely flat steel, as shown in Fig. 4, and is high
and comparatively narrow. Its lower edge, f,
which rests on the edge e of the plowshare, is
preferably straight, and its other edges are 50
rounded, as shown in Fig. 1. The mold-board
is set obliquely to the standard D, so as to re-
ceive the furrow-slice and turn it in the proper
manner. The lower part of the mold-boardis
slightly wider than the upper part of the plow- 55
share, so as to produce the projecting shoulder
or corner g, whereby the crumbling of the soil
and the turning thereof are greatly facilitated.
By making the mold-board flat instead of
concave, as has usually been the case, great 60
advantages in plowing are gained. It can be
kept clean without difficulty. Nothingwillad-
here to it during the act of plowing, and the
soil will be turned more completely and loos-
ened than with a concave mold-board. The 65
manner of fastening the plowshare and mold-
board and plow-bar together and to the stand-
ard may, of course, be varied, and may be the
same as has heretofore been practiced.
It-will be seen that the flat mold-board, by 70
sitting directly on the upper edge of the plow-
share, covering the same throughout its entire
extent, and by being inclined to the same angle
as the upper part of the said plowshare, does
not offer obstruction or impediment to the up- 75
ward movement of the soil along the inclined
faces of said plowshare and mold-board.
1. The combination, in a plow, of the share
A, concave in line from its point to its top or 80
rear, and the high and narrow mold-board B,
having its surface flat or without curve, as
shown and described.
2. The combination, in -a plow, of the share
A, concave in line from its point to its top or 85
rear, and the high and narrow mold-board, hav-
ing its surface flat or without curve and form-
ing the projecting corner g, substantially as
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Domschke, Charles. Plow., patent, January 10, 1882; [Washington D.C.]. (texashistory.unt.edu/ark:/67531/metapth170278/m1/2/: accessed December 18, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting UNT Libraries Government Documents Department.