US532854A

US532854A - Grain-drill shoe

Info

Publication number: US532854A
Authority: US
Publication date: 1895-01-22
Anticipated expiration: 1912-01-22

Description

' N. M. WI-G. GRAIN DRILL SHOE.

. (No Model.)

No. 532,854. Patentedfian. 1 95.

STATE NILS M. WIG, OF RENVILLE, MINNESOTA.

GRAlN-DRILL SHOE.

$PEGIFIGATION forming part of Letters Patent No. 532,854, dated January 22,1895.

Application filed March 29, 1894. Serial No. 505,626. (No model.)

,tion, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in grain drill shoes; and has for its object the provision of a removable cutter located at the rear or active end of the shoe and which can be readily detached for purposes of sharpening, replacement or repairs of any kind without the necessity of detaching the shoe proper for this purpose.

It is well known that the rear edge portion of a shoe of this character receives all the wear and is subject to injury, and is the part requiring the greatest attention.

The object of the improvement is a cutter bar which can be detached from the shoe proper at a moments notice, and which can be sharpened and again quickly adjusted to place without any appreciable loss of time.

The improvement consists of the novel features and the peculiar construction and combination of the cutter bar with the shoe proper which hereinafter will be more fully described and claimed, and which are shown in the accompanying drawings, in which Figure 1, is a side elevation ofa grain drill shoe showing the application of the invention. Fig. 2 is a side elevation of the shoe proper, the cutter bar being removed, and a portion broken away to show the preferable form of construction and the seat into which the tang portion of the cutter bar is inserted. Fig. 3 is a detail view of 'the cutter bar. Fig. 4 is a cross section on the line X X of Fig. 1 on a larger scale.

Similar figures and letters indicate correspondin g parts in the several views.

Referring to the drawings, the numeral 1 indicates a grain drill shoe of ordinary construction and outline, and is designed to be attached to the drill orimplement in the usual manner. The lower rear edge portion of the shoe is cut away as shown at 2 to receive a cutter bar A which is of corresponding shape to the part of the shoe removed so that the edge of the cutter bar forms a continuation of the lower edge of the shoe. The shoulder. 4 formed at the front end of the cut away portion 2 is oblique and overlaps the front end ofthe cutter bar A which is correspondingly formed to provide a close joint with the said oblique shoulder 4. A kerf or slot 5 is provided in the shoe contiguous to the cutaway portion 2, to receive a shank portion a, of the cutter bar A, the said shank a, being seated in the kerf or slot 5 and held therein by bolts or similar removable fastenings by means of which the cutter bar can be readily detached when required. This kerf or slot 5 may be formed in any desired manner, and may be constructed in an economical manner by forming the shoe 1 of similar parts which are placed together and secured by rivets or in any other manner.

The cutter bar A, is of tempered steel, and is provided with shoulders on opposite sides of the tang portion a, to come beneath the rear edge portion of the shoe bordering on the cutaway part 2. The shoe and cutter bar are of the same thickness so that the sides will come flush, and prevent the lodgment of dirt in the joint between the meeting edges.

A shoe of the construction herein set forth, is not more expensive than the shoe as ordinarily constructed, and will admit of the ready detachment of the most vulnerable point for repairs, and sharpening without occasioning the annoyance resulting where it is necessary to remove the whole shoe for these purposes.

Having thus described the invention, what is claimed as new is-- The herein specified grain drill shoe having its lower rear edge portion cut away for a proper distance corresponding to the portion in active engagement with the ground, the shoulder provided at the forward end of the cut away portion being rearwardly inclined or beveled and a kerf or slot extending into the body of the shoe from the inner wall of the cut away part, and a cutter bar of tempered or case hardened steel approximating the cut .away portion of the shoe so as to In testimony whereof I have signed this snugly fit in the space provided-thereby hav specification in the presence of two subscribing its forward end inversely beveled to the ing Witnesses.

inclined shoulder to form a close joint there- NILS M. WIG. 5 with, and having a tang to enter the said kerf lVitnesses:

or slot, and means to secure the tang in the J. L. JOHNSON,

kerf or slot, substantially as set forth. EDI-I. STABUCK.