US368039A - Harrow or cultivator tooth fastening - Google Patents

Description

(No Model.)

- P. WILOO X HARROW 0R GULTIVATOR TOOTH FASTENING. No. 368,039. I Patented Aug. 9, 1887.

#1 Z n @dwr UNITED STATES PATENT OFFICE.

FRANK WILCOX, OF EEEsE, MICHIGAN.

HARROW OR CULTIVATOR TOOTH FASTENING.

SPECIFICATION forming part of Letters Patent No. 368,039, dated August 9, 1887.

Application filed February 23, 1887. Serial No. 228,562. (No model.)

To all whom it may concern:

Be it known that I, FRANK WILOOX, a citizen of the United States, residing at Reese, in the county of Tuscola and State of Michigan, have invented a new and useful Improvement in Harrow or Cultivator Tooth Fastenings, of which the following is a specification.

My invention is an improvement in harrow or cultivator tooth fastenings, and has for its object to provide a device of this class which shall be superior to those which have preceded it in points of efficiency, simplicity, and durability.

The novelty consists in certain peculiar features of the device shown in the accompanying drawings, as will be hereinafter first fully described, and then pointed out in the claims.

In the accompanying drawings, which fully illustrate my invention, Figure 1 is a side ele vation of my improved device. Fig. 2 is a central vertical sectional view. Fig. 3 is a vertical cross-sectional view taken on the line y y of Fig. 1; and Figs. 4, 5, and 6 are detail perspective views of the saddle and'couplingplate, respectively.

Referring to the drawings by letter, A designates the tooth-bar; B, the tooth, and O the spring for pressing the tooth normally into the ground against the draft.

D represents a bracket or attaching-plate, which, for convenience of description, I denominate the saddle. This saddle rests squarely against the top side of the tooth-bar, as shown, and is provided at its rear edge with the perforated lugs d, between which the upper endof the tooth B is hung upon a pivot pin or bolt, b,passed therethrough. The upper side of the saddle is made concave, as shown at E, and is provided with two longitudinal side flanges, e, between which the spring rests in practice, and by which it is held against lateral vibration. ThespringOis provided at one end with a clip, 0, by which it is held to the tooth. From the point of its attachment to the tooth the spring passes up back of the tooth and above the tooth-bar in a gradual curve, and is then turned sharply toward the tooth-bar, and then passes along the saddle, being seated in the concave portion of the same. From the saddle the spring passes above the tooth in a line approximately parallel thereto,

its free end bearing thereon. It will thus be seen that the entire strength of the spring is utilized and directed against the tooth. The spring is held against the saddle, and prevented from being displaced by the couplingplate F,which is convex on its lower face, and 1s placed against that portion of the spring which rests in the saddle. It is provided on its opposite side edges with the lugs f,through which the bolts G, inserted through the toothbar and held therein, pass to receive the securing-nuts g, which, by being turned up against the lugs, causethc plate to bind against the spring and the saddle, and thereby firmly fasten the several parts together.

From the foregoing description,taken in connection with the accompanying drawings, the operation of my device will be easily understood and its advantages readily appreciated. The parts are all simple in construction, and in case one part should become broken or inj ured it can be easily repaired or replaced Without affecting the rest of the device. By the peculiar arrangement of parts shown and described the entire strength of the spring is applied to the tooth, and the spring is also supported andbracedat its weakest point, and is held againstlateral displacement. The saddle also prevents the spring contacting with the tooth-bar as it rocks to accommodate itself to the motion of the tooth, and consequently prevents the wearing away of the tooth-bar from that source.

As shown and described the device is adapted for use on harrows. When it is desired to use it ona cultivator, the tooth is made longer and the fastening devices are applied to the rear side of the tooth-bar.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

1. The combination, with the tooth-bar, of the saddle having the concave upper face, the tooth pivotally secured to the rear edge of the saddle, the spring resting in the concave portion of the saddle, and having both ends bearing on the rear or upper side of the spring, and the convex coupling-plate fitted to the saddle and holding the spring therein, substantially as described.

2. The combination, with the tooth-bar, of

In testimony that I claim the foregoing as my own I have hereto affixed my signature in 10 presence of two witnesses.

FRANK \VILCOX.

Vitnesses:

GEORGE W. Romans, .Lmrns LAMBERT.

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