US255387A - Cutter-bar for mowers and reapers - Google Patents

Description

(No Model.)

A. M. LACKE'Y.

GUTTERv BAR FOR AMOWBRS, AND RBAPBRS. No. 255,387. Patented Mar. 21,1882.

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UNITED STATES PATENT GEEICE.

ANDREW M. LAcKEY, 0E BnoWNsBURG, VIRGINIA, ASSIGNOE To JAMES A. PORTER-AND JAMES H. CHAMBERS, 0E MAGE, INDIANA.

CUTTER-BAR FOR MOWERS AND REAPERS.

SPECIFICATION forming part of Letters Patent No. 255,387, dated March 21, 1882. Application nien May 17,1381. (No model.)

To all rwhom it may concern Be it known that I, ANDREW M. LACKEY,

of Brownsburg, in the county of Rockbridge' and State ot' Virginia, have inventeda new and usei'ul Improvement in Gutter-Bars for Mowers and Iteapers, of which the following is a full, clear, and exact description.

Figure l is a front elevation of my improvement, the sicklesv being removed. Fig. 2 is a plan view of the improvemen'the cap-plate being removed. Fig. 3 is a sectional elevation ofthe same, taken through the line m x, Fig. 2. Fig. et is a plan view of one of the sickles. Fig. 5 is a cross-section through the cutter-bar and its cap-plate, showing an edge view cfa sickle. Fig. 6 is an edge view of a portion of the locking-bar having the screw formed on it. Fig. 7 is a perspective view of one ofthe sickles.

The object ot' thislinvention is to facilitate the attachment and removal of cutter-bar sickles.

A represents the cutter-bar, upon the upper side ot' which are formed dovetailed crossgrooves to receive the dovetailed Shanks C of the sickles B. Upon the sides of the sickles B, at theends of theircutting-edges,areformed square edges D, which abut against each other, as shown in Fig. 2, to strengthen the said sickles against lateral movement.

In one side ot' the shanks G of the sicklesB are formed notches or square recesses E, to receive the locking-blocks F, formed upon or attached to the dovetailed bar G, which slides in a dovetailed groove in the cutter-bar A, so as to be beneath the Shanks C of the sickles B. The locking-blocks F are made ot' such a shape and size as to correspond with the projecting parts of the cutter-bar A at the opposickles.

site sides of its cross-grooves. With this construction, whenfthe sliding bar G is pushed outward'the locking-blocks F correspond in position with the projecting parts of the cutterbar A, and the sickles B are released, so that any or allot the said sickles can be easily withdrawn to replace la broken sickle with a new one and for convenience in grinding the said The inner end of the sliding bar Gr projects and has a screw-thread cut upon it to receive a nut, H, so-that the said sliding bar G can be drawn inward to bring the lockingblocks F into the" notches E by screwing up the said nut H, locking the sickles B securely in place. The sickles B are unlocked by loosening the nut H and pushing the sliding bar G outward.

The Shanks G ot' the sickles B and the locking-blocks F ot' the sliding bar G are covered and protected by a cap-plate, I, which is seeurely riveted to the cutter-bar A, between the shanks C ot' the sickles B.

It will be seen by reference to Figs. 4 and 7 that the edges a b b of the sickle-shanks are beveled and form, in connection with the dovetail tenons on the bar A, interlocking dovetail attachments for the sickles. It will also be seen that the longitudinal edges c ot' the square recesses E are also beveled to allow the correspondingly-beveled edges d ot' the blocks F to overlap them, and thus aid materially in holding the sickles rigidly in their places. By thus constructing the parts the bar Gr not only prevents the sickles from being drawn out ot' their grooves in bar A, but the bar Gr also operates, when forced home by screwing up nut H, to draw or wedge down the Shanks of the sickles upon the tloors ot' their grooves in bar A. In a practical point of view this feature ot' locking the sickle-Shanks down on barA .by means of the sliding bar Gr is a very important one in connection with the dovetail attachment-s ot' the sickle-Shanks to said bar A. The attachment is very substantial and great rigidity is etl'ected. The cap-plate I can be made much thinner, and consequently v lighter, than Without such lookin g attachment.

The beveled edges f, opposite the beveled edges d of blocksF, will allow the sickles to be readily removed when bar Gr is adjusted so that blocks F are out of the notches Ein the sickle-Shanks.

I do not claim as my invention dovetail sickle-Shanks adapted to enter corresponding grooves in the, sickle-bar, said shanks being also notched to receive blocks on va -slidin g bar, as such a combination, broadly considered, is found in Letters Patent No. 90,086, of 1869.

VThe pitman-eye J can be attached to theinner end of the cap-plate I, as shown in Fig. 1, or to the middle part ofthe said plate, as shown in Fig. 3, as the construction of the machine may require.

Itwill be seen thatby my improved eonstrucwhat l claim as new, and desire to secure by tion the blocks on bar G serve two purposes, Letters Patent, isviz: They enter the notches E and prevent the The combination of the sichlesections havsickles fron] beingdrawn out of their places, ing notched dovetail shanks, the notches E 15 5` and they aetlike wedgevhenrings on the bevels being beveled at c, the bar G, having beveled c of the sickle-shrinks to allow the sickles to blocks F, adapted to ride up on bevels c, and be tightened when they become loose. By setthe adjlisting-nutH,substantinllyasdescribed.

ting up the nut Hthe blocks draw down upon ANDREW M. LACKEY. the sickleshanks with ,great force and reset the Witnesses: 1o sickles. J AMES H. CHAMBERS,

Having thus fully described my invention, T. A. BROWN.

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