US702572A - Grain-ejector for corn-planters. - Google Patents

Description

No. 702,572. y A

' A. J. MARSHALL.

GRAIN EJECTUR FOR CORN` PLANTERS.

- (Appliation filed Aug. 24, 1901.)

(No Model.)

III..

. Iii AAA' f 1, mm' u @A UNITED *STATES PATENT OEEICE.

ANDREWI JACKSON-MARSHALL, OF TIMMONS, TENNESSEE.

GRAIN-EJEGTOR FOR C-OR-N-PLANTERS..

SPECIFICATION forming part of Letters Patent No. 702,572, dated `June 17, 1902.

Application filed August `24, 1901. Serial No. 73,1167. (No model.)

To @ZZ whom it may concern.' Y

Be it known that I, ANDREW JACKSON MAR- SHALL, a citizen of the United States, resid` 'ing at Timmons, in the county of Maury and'v State of Tennessee, have inventeda new andiy useful Grain-Ejector for Corn-Planters, of.

which the following is a specification.

This invention relates to corn-planters, and

plied to position for use, andY that in case of.

damage or breakageI of oneorr more of its parts may readily and cheaply be repaired.

With these and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel constructionl and combination of parts of a grain-ejector for corn-planters, as Will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in whichlike numerals of reference indicate corresponding parts, there is illustrated one form of embodiment of the invent-ion capable of carrying the same into practical operation, it being understood that the elements herein exhibited may be varied or changed as' to shape, proportion, and exact manner of assemblage without departing from ythe scope of the in` vention; and in these` drawings- Figure 1 is a view in perspective of the device, the lid or cover thereof being removed and disposed to one side. longitudinal section.

Fig. 2 is a view in tical plan, the bottom plateconstituting one of the members of the seedbox-bottom being removed. Fig. 4 is a perspective detail view of one of the members of the housing or casing of the ejector mechanism. Fig. 5 is a similar view of the cut-o.

Referring to the drawings, 1` designates a Fig. 3ds aview in ver-A se'ed-slide, Whichisfguided for longitudinal l movement betweentwo plates 2 and bears upon-a plate 3, the plates being held assembledby cleats or cross-braces 4, secured near the same consistingof two like members 11 and 12, suitably held assembledwiththe bottomplate ofthe se'edbox by bolts 13 and nuts 14. As the membersof the housingare counter- 4parts of each other, this-arrangement being adopted to permit casting of the parts from a sin gle pattern, thereby to cheapen the produc- "tion of the structure, a description of one will serve for (both. Each member com-prises a base or flange 15, through which passes one of the bolts 13, a side Wall 16, extending at right angles to the base l5, and an end wall17, undercut at 18 to permit passage thereunder of the seed-slide 1. The side wall is provided on the inner face of one .end with an angular I groove orrecess 19, and the end wall is formed or provided with an outward-proj ectin g flange j 20, extending at right angles to the side Wall .16', one end of .the iiange20 being extended beyond the saidwalland-the vertical edge of the wall beingbeveled, as at 21. When the two members of the'housing are assembled, the recess 19 is engaged bythe beveleded'ge` 21 of the end wall of the other member, and the side of this latter member adjacent to the end recess is engaged by the-projecting end of the ange 20, as clearly shown in Fig 1. By co- `action between the beveled edges of the two walls andthe angular recesses of the side walls the members'of the-'housing are'held 'securely assembled against lateral or longitudinal play when the boltA 13 andfnutsflll: have been secured in place.

Projecting inward from each side wall and disposed to bear upon the seed-slide 1 is a shoulder or boss 22, having a vertical elongated opening 23 therein to be engaged-by the shaft or axle of the ejector S. As herein shown, the shoulders 22 constitute an integral part of the members ll and l2, but it is to be understood that, if preferred, these shoulders may be separate elements suitably associated with the said members. The ejector 8, which constitutes one of the salient features of the invention, comprises a threearmed structure, the arms 24 of which are pyramidal in shape, as being best adapted for the work to be performed, although they may be otherwise shaped and still be within the scope of the invention. The arms are of somewhat less diameter than the openings in the seed-slide and are of a length to project some distance below the bottom of the seedhopper, thereby in practical operation to effect positive dislodgment of seeds or other substances that might lodge in the seed-slide openings. The ejector is provided with pintles 25, preferably integral with the body of the ejector and constituting the axles thereof, these pintles to work in the openings 23 of the shoulders 22, as clearly shown in Figs. 2 and 3, the contour of the said openings being such as to permit a limited amount of vertical play to the ejector, thereby to prevent crushing or mutilating of a seed that has lodged in one of the openings of the seedslide. Ordinarily, as where a grain of corn becomes lodged in such opening, the first impact of the point of one of the arms with the seed will be suiiicient to dislodge it without injury, and should considerable resistance be presented to its dislodgment the further pressure exerted thereon by the downwardprojecting movement of the arm through the seed-slide will effect its removal without injury, the resistance to dislodgment causing the pintles ot' the ejector to ride upward in the openings 23. lf, however, the substance lodged in the seed-slide opening still resist dislodgment, it Will be forcibly crushed and ejected as soon as the pintles come in contact with the upper Walls of the said openings, as at this point further yielding of the ejector in an upward direction is positively checked.

As a means for controlling the feed of grain to the ejector the cut-off 9 is provided, the same comprising a hollow rectangular piece of metal having rounded corners 26 and being of less length than the chamber formed by the members 1l and 12. The cut-off is provided in its top with a rectangular orifice 27 to present space in which the arms of the ejector may work and in its sides with openings 28, adapted to fit over the shoulders 22, the sides of the openings being rounded at 29 to allow rocking movement of the cut-off on the shoulders when a large grain becomes lodged in the seed-slide, thus to permit the grain to be carried to the ejector, where it is dislodged, the rounded corners 26 of the cutolf coacting with the rounded sides 29 of the openings 28 to further this rocking movement.

The top of the cut-off on each side of the orifice 27 is provided with two wells or sockets 30 to be engaged by the lower ends of spiral springs 3l, the upper ends of which engage downward-extending arms or projections 32, carried by the inner sides of the walls 16, adjacent to their upper edges. These springs 3l are to exert sufficient downthrust on the cut-off to cause the latter to dislodge the seeds resting thereon without interfering with those in the seed-slide openings, but are to yield with requisite readiness to permit passage under the cut-off of seed that have lodged in the openings of the seed-slide.

The top of the housing lO, which in this instance is shown as curved, is closed by a cover 33, shaped to conform to the contour of the upper edges of the side walls and having inturned iianges 84: to interlock with the flanges 2O of the end walls 17. To prevent separation between the cover and the housing, suitable locking means is employed, consisting in this instance of a bolt 35, having two projections 36 extending at right angles to its length and to be turned down against the side walls of the housing, a keeper 37 serving to hold the bolt in operative relation to the cover.

The operation of the device is as follows: The seed-slide being reciprocated in the usual or any preferred manner, carries the seed one atatimeinto thehousingand over the opening 7 in the bottom plate 3 of the seed-hopper bottom. Two of the points or arms of the ejector hear upon the space between two of the openings of the seed-slide; but as soon as the opening of the seed-slide approaches the center of the housing one of these arms is caught by the wall of the opening and is by the movenient of the slide projected through the opening therein and through the opening in the bottom plate 3. If the seed in the opening G has not been discharged, the arm will eifect its dislodgment without injury thereto; but should it be wedged in the seed-opening of the seed-slide the ejector will in a certain and positive manner force it out of the opening and discharge it to the ground. The arms of the ejector are so spaced with relation to the openings 6 that each opening will be engaged by an arm as the seed-slide is reciprocated irrespective of the speed at which it may be driven, so that in operation the device will be certain to perform the functions for which it is designed.

The only parts of the device liable to become damaged or broken in use are the ej ector and the springs 3l, and it will be apparent from the construction of these parts as shown that they may be readily and cheaply supplied in such an emergency.

A feature of this invention that renders it peculiarly advantageous of employment is that there is no possibility of the parts becoming inoperative, as by being rust-locked, as both the cut-off and the ejector are so disposed with relation to their bearing parts as effectively to overcome such contingency.

IOO

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Vihiler the form of device herein shown will be foundthoroughly e'icient in operation and will, if constructed as shown,I be reliable in use, it is to be understood that various changes in the manner of construction and assemblage of the parts may be employed and still be within the scope of theinvention.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

1. In a corn-planter, the combination with a reciprocatory seed-slide, of a rotary vertically-yieldable ejector, and a cut-olf adapted for vertical yielding and rocking motion independently of the ejector.

2. A grain-ejector for corn-planters comprising a casing provided with oppositely-disposed shoulders having elongated orifices, an

ejector having projections working in the ori' ces, and a spring-pressed cut-off straddling the shoulders and having'rounded faces coacting therewith.

3. A grain-ejector for corn-planters comprising a casin g provided with o'ppositely-dis-v posed shoulders having elongated openings therein,'a seed-slide movable in the casing,

' a rotary ejector having projections working in the said orifices, a cut-o straddling the shoulders and having-rounded shoulders c0- acting therewith, and springs associated with the casing and bearing upon the cut-0E.

et. A grain-ejector for corn-planters, comprising a casing provided with oppositely-dis- .posed shoulders having elongated orifices, an-

ejector having projections working intheorif1ces,la spring-pressed cut-off straddling the shoulders and havingrounded faces coacting therewith, and a coverprovided withr'meausv an end wall undercut to permit `movementof the seed-plate, each sidewall being provided vwith anv angular groove and each endwallzbe-l ing provided with'a beveledledge' andwith aftopange projecting beyond the edge,fthe i angular grooves,when the members are as# sembled, being engaged'by the beveled edges `0i' the end walls, and the ends of the side walls being engaged byr the 'projected' portions of the anges, a'cover havingiinturned walls, and locking means carried by the cover. In testimony that'l claim'I thefforegoing as ANDREW'- JACKSON- MARSHALL.

Witnesses: v y

J. J. BUNCH, H. W. THOMAS.

anges tointerlock withA those ofthe end -6o my own I yhave hereto affixed my signature in ythe presence of two witnesses.

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