US112676A - Improvement in rotary harrows - Google Patents

Description

UNITED STATES JOHN w. BARTON AND THOMAS HOLMES, on EMPORIA, KANSAS.

IMPROVEMENT lN ROTARY HARROWS.`

Specification forming part of Letters Patent No. 112,676, dated March 14, 1871.

To all whom it may concern:

Be it known that we, JOHN W. BARTON and THOMAS HOLMES, of Emporia, in the county use the saine, we Will now proceed t0 describe its construction and operation, referring to the annexed drawing, in which- Figure l is a plan View, and Fig. 2 is a rear elevation, of our harrow.

A Arepresent two circular harrows vof any suitablesize and construction, each revolving around a bearing, B, which passes through the center of the harrow. A cross-bar, O,con neet-S the two bearings B B, said cross-bar having at each end twostrips, D D,of iron, rnily secured to it. These strips form a s lot at the ends of the cross-bar suflicient to allowthe bearings to pass between them and be bolted, or, rather, pivoted by bolts, the bearings being iiattened for that purpose. In the upper end of each ofthe bearings is att-ached' a rod,

` E, which is iattened and slotted at its other end, and fastened to the cross-bar C by means of a set-screw, Gr, passing through said slot.

By this means IV am enabled to shift the rotation of the harrows in or out, as desired,

giving perfect control of the rotation, which is considered above al1 most essential.

The Screws G G are tightened4 just sufficient to hold the harrows in the desired position to rotate either in or out while working, but VStill allow the harrows to turn on their bearingpivots when a solid obstruction should happen to come between the harrows. In such case the slOttedbrace-rods E E will slide and allow the harrows to turn out and rotate over without straining on any part of the harrow.

In each of the bearings B, below the point where the same is pivoted to the bars D D, is

inserted and fastened a draft-rod, H, which is without any joint where it enters the bearing, making it more substantial and less liable to break and get out of repair. The draft-rods H H are pivoted to the double-tree I, and the tongue J passes through a staple on the Same and through a staple on the cross-bar C, as shown.

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

The combination of the harrows A A, bearings B B, crosS-bar C, with iron strips D D, brace-rods E E,set-Screws G G,and draft-rods H H, all constructed and arranged to operate substantially as and for the purposes herein set forth.

In testimony that we claim the foregoing we have hereunto set our hands this 5th day of January, 1871.

JOHN W. BARTON.

. THOMAS HOLMES.

Witnesses:

ROBERT B. HUNT, HOWARD DUNLAP.

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