US318512A - Lbvi scofield - Google Patents

Description

(Model.)

L. SGOEIELD.

Y CORN PLANTER. No. 318,512. Patented May 26, 1885.

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Partnr LEVI SCOFIELD, OF GRAND HAVEN, MICHIGAN, ASSIGNOR TO CHALLENGE CORN PLANTER COMPANY, OF SAME PLACE.

CORN-PLANTER.

SPECIFICATION forming part of Letters Patent No. 318,512, dated May 26, 1885.

Application filed March l0, 1855.

T all whom, t may concern:

Beit known that I, LEVI ScoFiELD, of Grand Haven, in the county of Ottawa and State of Michigan, have invented certain new and useful Improvements in Corn-Planters; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, torming a part of this specification, and to the Iig- Io ures and letters of reference marked thereon.

My invention relates to improvements in the seed-plate-actuating mechanism of corn-planters, and particularly to improvements upon the mechanism shown, described, and claimed I5 in Letters 'Patent of the United States granted to me on the 17th day of March, 1885.

It has for its object to provide more simple and eiicicient means for effecting the arrest of the horizontally-vibrating frame to which the actuating-pawls are connected, and more simple and efficient means for preventing the raeing of the seed-plate under the impulses given it by the actuating-pawls.

In t-he accompanying drawings, Figure l represents a top plan View of one of the seed-boxes of a corn-planter constructed in accordance with my invention, with the hopper and bottom plate removed to show clearly the construction and arrangement of the improved seed-plate-actuating mechanism. Fig. 2 is a sectional view taken on the line x x, Fig. l. Fig. 3 is a perspective viewbf the horizontally-vibrating frame and the swinging supports upon which it is mounted.

Similar letters of reference in the several :figures indicate like parts.

A represents thc plate or casting which forms the base of the seed-box, and serves to connect the latter rigidly to the beam of the 4o planter. This casting has ilanges a2 a, which serve to guide the actuating-pawls B in their movements, and is provided with a horizontal bearing for the seed-plate C to rest upon, and with a central stud, a', which forms a pivot for the seed-plate.

The seed-plate is provided with the usual seed-apertures and with the peripheral ratchet-teeth c c, with which the actuating-pawls b b co-operate. rIhese pawls are preferably 5o arranged at opposite corners of a reciprocating frame, D, and are pivoted to the bolts E,

(Model.)

which serve to connect said swinging frame to the upper ends of bifurcated arms or links F F, that bestride the beam, and are pivoted in turn thereto by bolts f, as shown.

The parts thus far described very much resemble corresponding parts of the mechanism illustrated in my former patent, above referred to, though there are some ditferenees in construction, which render the present device 6o more simple and easier to iit up, which I will now point out. In the former device the throw of the horizontally-swinging frame in both directions was limited by the striking of the parts of said frame (lettered h5 h5 in said pat- 65 ent) against the cross-plate of the main casting A, and the racing of the seed-plate was prevented by the co-operation of stops formed upon the pawls with the ratchet-teeth of said seed-plate, whereas in the present device I 7o connect the arms constituting the swinging supports of 'the horizontally-moving frame by a broad bar or cross-piece, G, as shown clearly in Fig. 3, and cause said bars or cross-pieces to serve as stops for arresting and limiting the movements of the swinging frame by alternately engaging with opposite portions of the casting A, as will be understood by reference to Figs. l and 2; and instead of forming stops upon the pawls, I arrange upon said bars 8o or cross-pieces Gstuds or projections H, which operate alternately to arrest the `further rotation of the seed-plate by engaging with the projecting teeth thereof simultaneously with the engagement of the bars with the casting in limiting the throw of the swinging frame. These changes in construction render the new device equally as eiiieient as the former device, if not more so, and require less fitting up of the castings. 9o

I of course am aware that it is not broadly new to combine in a seed-plate-actuating mechanism of a planter stops for limiting the motion of a frame carrying the seed-plate-actuating pawls with other stops for preventing the racing of the seed-plate, and I therefore do not desire to be understood as endeavor-ing to claim herein such broad idea.

My improvements are in the nature of additions to or modifications of the de vicecovered Ico by my former patent; and

What` I claim to be new isl. The combination, with the Seed-plate and ing supports for the said frame, having the the casting upon which the seed-plate is mountwide bars or cross-pieces adapted to (zo-operate ed and rotates, of the horizontallyswinging with the casting to limitthe throw of the frame I5 frame and its pam/1s, and the vertically-swingl and its pawls, and having also the studs or pro- 5 ing 'supports for the said frame, having the l jecbions for engaging with tbeteebh of the seed- Wide bars or cross-pieces adapted to eo-operate plate and preventing the racing of the latter, with the casting to limit the throw of the frame substantinlly'as described. and its zLWls substantially as described. T J

2. ThE; combinatiion, with the seedqilate and LE H SCOFIELD 1o the Casting upon which the seedplate is mouno- Vil'n esses:

ed and rotates, of the horizontailyswinging GEO. STICKNEY, frame and its pawls, and the vertically-swimg`- XV. M. SAUNDERS.

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