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UNITED STATES PATENT OFFICE.
THOMAS J. JOHNSON, OF ITALY, TEXAS.
PLOW.
A o. 841,530. Specification of Letters Patent. Patented Jan. 15, 1907.
Application filed September 22, 1906. Serial No. 335,766.
To all, whom it may concern: plow-point from the foot of the standard, the
Be it known that I, THoMiks J. JOHNSON, a I catch 10 is moved backward sufficiently to
citizen of the United States, residing at pass the rear edge of the same, and the lever
Italy, in the county of Ellis and State of is then swung upon its pivot 6 to withdraw
5 Texas, have invented new and useful Im- the key 9 from the loop 3. 6
provements in Plows, of which the following From the foregoing it will be obvious that
is a specification. I my invention is of simple construction, can
This invention relates to plows; and one of be quickly operated to secure the plow-point
the principal objects of the same is to pro- in position on the standard-foot, is strong
1o vide simple, reliable, and efficient means for and durable, cannot get out of order with 65
holding the plow-point firmly in position ordinary usage, and can be manufactured at
upon the standard or foot without the use of comparatively slight cost.
bolts and nuts. Having thus described the invention, what
Another object of my invention is to pro- I claim is-
15 vide a pivoted lever and key for holding a 1. In a plow, the combination of a stand- 70
plow-point in place on the fot or standard ard having a slot therein, a plow-point hav-
and to provide means whereby the lever may ing a loop upon its rear surface adapted to
be quickly operated to lock the same against enter said slot and a lever pivoted to the foot
accidental displacement and permit the of the standard and provided with a later-
20 same to be quickly disengaged from the plow- ally-extending key to engage the loop on the 75
point. plow-point and the upper end of said lever
These and other objects may be attained having a catch to engage the side of the
by means of the construction illustrated in standard, substantially as described.
the accompanying- drawings, in which- 2. A plow-point having a loop upon its
25 Figure 1 is a rear elevation of the plow- rear surface, in combination with a standard 8o
point and showing the manner of attaching provided with a slot through which said loop
the same to the foot or standard of the plow. extends and a lever pivoted to the standard
Fig. 2 is a detail sectional view taken and provided with a laterally-projecting key
through the plow-point, the foot of the plow- to engage said loop, said lever being curved
30 standard, and through portions of the lock- at its lower end and having a catch at its up- 85
ing-lever. per end to engage the side of the standard
Referring to the drawings for a more par- opposite to the curved portion of the lever,
ticular description of my invention, the nu- substantially as described.
meral 1 designates a plow-standard, which 3. A plow-point having means upon its
35 may be of the usual curved type and which rear surface to engage an opening in the 90
is provided with a slot or opening 2 in the standard and a pivoted lever provided with a
foot portion thereof to admit a loop 3, key for locking the point to the standard,
formed on or secured to the rear wall of the said lever having a catch for engagement
plow-point 4. A locking-lever 5 is connected with said standard, substantially as de-
40 to the standard I near its lower end by a scribed. 95
rivet 6, said lever being bent outwardly, as at 4. A plow-point having an integral loop
7, and flattened to lie against the plain extending from the rear surface of the same,
curved portion 8 of the foot of the standard. in combination with a standard, and a lever
A laterally-projecting key or lug 9, designed pivoted to the lower end of the standard and
45 to engage the loop 3 on the plow-point, is provided with a laterally-extending key to 'Co
formed upon one side of the lever 5, and the engage the loop on the plow-point, and the
shank of the lever extends upward away upper end of said lever being bent to engage
from the standard 1 and is provided at its the standard at the side opposite to that at
upper end with an inwardly-extending arm which the key enters the loop.
so 5a, provided with a flattened catch 10, In testimony whereof I affix my signature 105
which engages the side of the standard 1 op- in presence of two witnesses.
posite the curved portion 7 of the lever 5 to THOMAS J. JOHNSON.
hold said lever firmly in place with the plow- Witnesses:
point locked to the foot of the standard. A. B. HARRIS,
55 Whenever it is desired to disengage the L. A. ORME.
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Johnson, Thomas J. Plow, patent, January 15, 1907; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth508517/m1/2/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.