Checking Attachment for Planters Page: 3 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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1,304,916
tion had when eight pins are used. This
will cause the lever 15 to be tripped eight.
times during each revolution of the wheel
3 and thus drop the seeds at a certain dis-
5 tance according to the diameter of the wheel.
By adding a pin between each of the pins
shown the frequency of the dropping opera-.
tion is increased and the seeds are planted
closer together; on the other hand by re-
10 moving four of the pins alternately the
frequency of the dropping operation is de-
creased and the seed planted farther apart.
It is obvious that the pins may be disposed
to drop the seeds in accordance with the
15 desires of the planter. When the end of the
row is reached and the planter is turned
back on the next row it is necessary to ad-
just the collar 9 so that the pins will trip
the valve 21 at the proper point to aline with
20 the drop of the preceding rows. This is
quickly accomplished by loosening the pin
13 and rotating the collar 9 to the proper
space, after which the set pin is tightened
and the collar locked. This is a very simple
25 and satisfactory arrangement and obviates
the use of a set screw.What I claim is,
1. In a tripping device for planters, a
sleeve constructed to be fastened on the
ground wheel of a planter, a collar rotatably 30
confined on the sleeve and having radial
openings one of which extends inward to
the sleeve, and a plurality of pins mounted
in the opening, one of said pins being fitted
in the opening extending to the sleeve and 35
binding against said sleeve whereby the
collar is fastened against rotation, said last
named pin constituting a locking device
which may be loosened to adjust the collar
circumferentially of the sleeve. 40
2. In a checking attachment for planters,
a seed chute valve, a supporting structure
carrying a pulley, a tripping lever, a sup-
port for the tripping lever, a flexible connec-
tion extending from the tripping lever over 45
the pulley to the valve, and a tripping de-
vice including a sleeve on which a plurality
of radial pins are supported, and means for
adjusting the pins circumferentially of the
sleeve and fastening the same in position. 50
In testimony-whereof I affix my signature.
WILLIAM L. SPROWL.Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,
Washington, D. C."$2
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Sprowl, Wiliam L. Checking Attachment for Planters, patent, May 27, 1919; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1259250/m1/3/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.