US654386A - Grain-drill. - Google Patents

Description

` Nn. 654,386. yI mentd my 24, moo..

' c. n. GRAIN, L. c. EVANS o H. E. ooosoN.

GRAIN omLL.

(Application :tiled Feb. 2, 1900.)

(No Model.)

NiTnD STATES PATENT OFFICE.

CHARLES R. GRAIN, LOUIS O. EVANS, AND HARRY E. DODSON, VOF SPRING- FIELD, OHIO, ASSIGNORS TO THE P. l?. MAST t COMPANY, OF SAME PLACE.

GRAIN-DRILL.

`SPECIFICJMEIOIBT forming part of Letters Patent No. 654,386, dated July `24, 19010. Application filed February 2, 1900. Serial No. 3,684. (No model) To all whom it may concern:

Be it known that We, CHARLES R. CRATN, Louis C. EVANS, and HARRY E. DoDsoN, citizens of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Grain-Drills, of which the following is a specification, reference being had therein to the accompanying drawings;

This invention relates to certain new and useful improvements in grain-drills.

The general object of this invention is to provide an improved spring-pressure device adapted to press upon drag-bars formed into a furrow-opening runner atI the rear end, such pressure device carrying an adjustable fulcrum which may be adjusted to change the point of pressure-on the drag-bars, thereby also varying the resiliency of such pressure device to more perfectly accommodate itself to varying conditions of soil.

This invention also relates to details of con'-A struction hereinafter appearing, and particularly pointed out in the claims.

In the accompanying drawings, on which like reference characters indicate corresponding parts, Figure l'shows a partial side elevation of a grain-drill with our improvements applied thereto; Fig. 2, a detail plan view of a portion of the frame structure, showing the furrow-opener with our improvements applied thereto; Fig. 3, a detail view of the clamp for clamping the forward cross-bar and to which the drag-bar is pivoted, as also our improved presser-bar; Fig. 4, a detail View of a pin for extending through the clamp and also through one end of the drag-bars, together with the spring-presser bar; and Fig. 5,`a detail view of our improved clip for engaging the presserbar and also engaging with the drag-bars, such clip being adjustable on the presser-bar to vary the fulcrum-bearing of said bar on theV ceivin g the grain to be sown, such hopper and such frame being supported by wheels, such as indicated at C in dotted lines. To the forward end of this frame is secured a clip D by means of a clevis E, suchclevis fitting over the front cross-bar of the frame and extending through the clip, where it is secured in place by means of nuts F. In order to prevent the clip D from partially'turning, as it might do should the nuts become loosened on the clevis, we form iianges or projections G, which extendf about the sides of the front cross-bar, thereby holding it rigidly in line with said bar. The bracket is cut out underneath, as shown at H, I, and Jl, respectively, the cut-out portions H and J being for the accommodation of the drag-bars K of the furrow-opening runner, while the cutout portion I accommodates the upper end of the spring presser-bar L, such bar being turned back on itself to formthe hook M for the reception of a pin N, which is adapted to pass through holes O in the clip and also through the drag-bars. Thus the drag-bars, as well as the spring presser-bar7 are each pivoted about the same pin, so that they have a common pivotal axis. A fulcrum-clip P is adapted to be bolted to the presser-bar L by means of a bolt Q. Such clip is adjustable' on the spring-bar by reason of the slotted' opening R, through which the bolt Q passes. Thus as it is desired to change the fulcrum point or bearing of the spring-bar it may be quickly accomplished by loosening the bolt Q and sliding the fulcrum-clip in either direction, so that the spring-pressure applied to the drag-bars is more or less resilient or yielding,according to the adjusted position of the fulcru1n, the spring portion of the spring-bar being also longer or shorter in accordance with such adjustment. Thus the device can be made to meet the different conditions of soil, whether soft and yielding or hard and relatively unyielding.

In order to keep the fulcrum-clgip in line with the spring-bar, it will be observed that the clip is provided with flanges S, such flanges iitting about the edges of such bar.

To the end (the lower end, as illustrated in the drawings) is cast or otherwise secured a cross-bar T, such bar being adapted to en- IOO gage with the drag-bars and normally rest upon them, while the outer ends of such bar are turned down, as shown at U, to form hooks for engaging the sides of the drag-bars,

so as to hold the spring presser-bar in its proper relation to such drag-bars.

To the rear end of the spring presser-bar L is bolted or otherwise secured a yoke V by means of a bolt W. To the rear end of this yoke is pivotally connected a link X by a bolt Y, such link connecting at its vupper end with a crank Z, rigidly connected with a pivoted bar 2, hereinafter referred to. A seedconveyer tube 3v extends through the yoke V and is flanged at its upper end, as shown at 4, to prevent dropping through the yoke. The lower end of the seed-conveyer is formed into a runner 5, which opens the furrow, such runner being rigidly connected with 'the dragbars K. To the rear end of the seed-conveyerpis cast or otherwise secured a projection 6, through which is formed a hole or opening 7. This is for the purpose of attaching a seed-covering device. (Not shown.)

In referring again to the pivoted bar 2 it will be observed that it carries a lever 8, such leverbein g adapted to rock the bar back and forth, as desired. A toothed segment 9 is supported by the frame structure and is adapted to be engaged by a detent 10, which is manipulated by the operator out of contact with the segment 9 in a manner Well known. As the bar 2 is rocked the crank Z for each presser-bar will be moved more or less, as desired, so that it will act upon the spring presser-bar to cause the fulcrum-plate to bear down on the drag-bars with a greater or less pressure, as desired, according to the condition of the soil and also according to the depth of `seed required. When so adjusted the stiness of the spring-bar will depend upon the adjusted position of the fulcrum-clip. From Fig. l it will be seen that the presserbar Ais bent, as shown at 1l. This is for the purpose of bringing the fulcrum-clip normally into contact with the drag-bars.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In `a seeding-machine, the combination with a frame structure, of a furrow-opening device including a drag-bar, a pivotal connection between said drag-bar and said frame structure, a spring presser-bar pivotally connected with the frame structure, a fulcrumbracket sec ured to said presser-bar and adapted to press upon said drag-bar consisting essentially of a lever and link connected to the presser-bar and means for varying the tension of the same bar upon the fulcrum-plate andthence upon the drag-bar.

2. In a seeding-machine, the combination with a frame structure, of a furrow-opening. device pivotally connected at its forward end to said frame structure, a spring presser-bar also pivotally connected to said frame and having a common pivotal center with the furrow-opening device, an adjustable bracket secured to said spring-bar and adapted to engage with said furrow-opening device, a yoke also secured to said spring-bar, a seed-conveyer engaging with said yoke and connected with said furrow-opening device, and lever mechanism t9 elevate said yoke as also said seed-conveyer and furrow-opening device, all substantially as shown and described.

3. In a seeding-machine, the combination with a frame structure, of a bracket having iianges adapted to fit about said frame structure, a clevis adapted to extend over said frame structure and through said bracket to hold said bracket rigidly in place, said bracket having cut-away spaces in its under side, a pair of drag-bars adapted to tit in two of said spaces, and a spring presser-bar also adapted to fit Within one of said spaces between said drag-bars, substantially as shown and described.

4t. In a seeding-machine, an adjustable fulcrum-bracket having an elongated opening therein near one end, and a transverse bar connected with said bracket near one of its ends.

5. In a seeding-rnachine, a movable fulcrum-bracket having a slot or opening therein near one end, of iianges or projections eX- tending from one face of said bracket along its outer edges, and a transverse bar across the other end of said bracket, said bar having hook-like extensions at its ends, substantially as shown and described.

In testimony whereof we afX our signa tures in presence of two Witnesses.

CHARLES R. GRAIN. LOUIS C. EVANS.

HARRY E. DODSON.

Witnesses:

C. C. KIRKPATRICK, W. H. HOLMES.

IOO

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