US31117A - Improvement in mole-plows - Google Patents

Description

UNITED STATES HOMER GILLET, OF

PATENT OFFICE.

LYNDON, ILLINOIS.

IMPROVEMENTIN IVlOLE-PLOWS.

To all whom it may concern:

Be it knowu that I, HoMEa GILLET, of Lyndon, in the county of Whitesides and State of Illinois, have invented a new and Improved Mole-Plow; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a perspective view of the improved mole-plow. Fig. 2 is a side elevation of the plow, representing the tooth and auxiliary beam in two positions.

Similar letters of reference indicate corresponding parts in both figures.

My invention consists iu combining, with an auxiliary beam and main beam and adjustable mole-tooth, a strong semi-elliptic spring and adjustable screw-shaft, as will be hereinafter described, for the purpose of adjustingthe auxiliary beam, and at the same timekeeping the mole-tooth up with the pressure of the spring against the crown of the channel, as will be hereinafter fully explained.

To enable those skilled in the art to fullyunderstand my invention, I will proceed to describe its construction and operation.

A is a fiat, strong plate of metal, brought to a beveled cutting-edge and rigidly secured to. the beam B at, or nearly at., a right angle to its top surface. yThis colter A is secured to the rear end ot' the beam B, as represented in the drawings, and projects down a suitable distance below the beam. The extreme lower end of this colter has a portion projecting from its back surface, to which the follower D is rigidly secured..B This follower is merely an enlarged portion which follows the main part of the tooth C and nishes the channel. The follower D is about the same transverse shape as the portion C, but it is slightly larger in section than the portion C. This portion D has a cavity in its front end, into which the rear end of the tooth portion C tits and is allowed to play up and down. The tooth portion G is pivoted at a, its rear'end to the colter A, and at a to a bar, b, (represented in Fig. 1,) which bar is passed up through a hole, which is formed in any suitable manner through the colter A. This bar b is longer somewhat than the colter A, and projects above the upper end of this colter A through aplate, c, which is bolted on vtop of the beam B.

d is a hand-wheel, and e is its vertical stem, which stem has a male screw cut on its end. This screwstem passes through a nut, f, projecting from the bar b, and its lower end is stepped on aiixed piece, c. Now, by turning the hand-wheel d it will raise or depress the bar b and the point of tooth C, as represented in Fig. 2 ofthe drawings. is adj usted in the manner just described, is

made of the shape represented in Fig. 2, its

top and bottom surfaces being parallel, except at the front end, which is beveled abruptly to a point. A section taken transversely through this tooth approaches the shape of an arch with a high crown, as represented in Fig. 1

H is a wide shoe, which is secured to the front part ofthe beam B, underneath the end ofthis beam. This shoe is common to all moleplows, and it is used to prevent the front end of the beam from sinking into the Wet soil. To the rear end of this shoe His pivoted an auxiliary beam, G, which extends back under the main beam B to the colter A, and when this beam Gis brought up close to the main beam B, as shown in Fig. 2 in red `Ylines, its top surface is parallel with the bdttom surface of the beam B.

On the top and near the rear end ofthe aux iliary beam G a strong semi-elliptic spring, K, is placed, one end of which is secured to this beam G and the other end is allowed to play loosely on this beam. The pointer g, which is attached to the end ofthe spring K, is free to move, and is intended to indicate the amount of downward pressure on the beam B by its moving back or forth with the end ot' spring K.

J is a screw-bar, with a hand-wheel on its upper end, which bar passes through the rocking-nut J and down through the beam B. The t lower end of this screw J is stepped on the spring K, so that by turning this screw the auxiliary beam G may be brought nearer to or set farther from the beam. B. The spring K isl allowed to passup into a space formed in the beam B, so that the beam G may be brought up close to beam B. This lower or auxiliary beam G rests on the surface when the moletooth is in the ground, and the shoe H also rests on the ground. The harN is pivoted at its rear end to the beam B, and its front end may be moved to the right or to the left of a line drawn longitudinally through the center ofthe beam, for changing the line of draft of This tooth C, which` the machine. The perforated sector-plate L, in combination with the beams G and B and placed over this draft-bar N with a suitable adjusting-screw J, as herein set forth, for the boit, is used to secure this bar N in any desired purpose described. position.

Having thus described my invention, what HOMER GILLET' I claim as new, and desire to secure by Letters Witnesses: Patent, is- JOHN WHALLON,

The spring K, or its equivalent, when used GILBERT BREWER.

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