US431455A - Earth-auger - Google Patents

Description

(No Model.)

W. BAGLESTON. EARTH AUGER.

10.431,455. f PatentedJuly 1, 1890.

UNITED STATES PATENT OFFICE.

WILLIAM EAGLESTON, OF MARSEILLES, ASSIGNOR TO DARIUS D. CLAYTON,

OF UPPER SANDUSKY, OHIO. p

EARTH-AU G ER.

SPECIFICATION forming part of Letters Patent No. 431,455, dated July 1, 1890.

l Application filed January 10, 1890. Serial No. 336,478. (No model.)

T0 all whom lit may concern:

Be it known that I, WILLIAM EAGLEsToN, a citizen of the United States, and aresident of Marseilles, in the county of Wyandot and State of Ohio, have invented certain new and useful Improvements in Earth-Angers; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to improvements in earth-angers such as are used in boring postholes, the object being to prevent the friction and suction that usually occur when withdrawing the auger and which are caused by the earth packing around the faceof the bit; and it consists of certain attachments to the bit and the combination of said attachments therewith, the same being hereinafter described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the accompanying drawings, in which similar letters of reference indicate corresponding parts, Figure l represents a perspective view of an auger with attachments embodying the invention connected thereto. Fig. 2 is a cross-section of one of the clearanceplates on an enlarged scale.

Referring to the drawings by letter,A designates an earth-auger of usual construction, having the bit B, provided with the circular face or boring plate C, concentric with and secured to its shaft or axis near the lower pointed end thereof. The said plate is provided with the cutting-edges c c of the ordinary conformation and inclining downward from the plane of the face-plate in the usual manner.

Secured to the edge of the plate C are the attachments D, which are plates of metal or other proper material, having their .lower edges secured to the face-plate by screws, rivets, solder, or other suitable means, or, if desired, the plates D may be integral with the face of the plate.

The entire purpose of the invention depends upon the construction of the plates D and their arrangement in relation to the auger-bit. The plates D are clearance-plates,

as by their use suitable clearance is given to the auger to render its removal easy.V The said plates may be one or more in number; but it is obvious that there should be at least two, or an even number, to cause the motion of the auger to be direct and prevent any lateral tendency thereof.

The construction of each clearance-plate is as follows: E is the front or advancing edge of the said plate, beveled from within outwardly to form a cutting-edge, inclined upward and rearward from its direction of motion to give a shearing cut, and with its plane parallel to the shaft of the auger, so that the post-hole may be of equal diameter throughout. The rear edge of the clearance-plate inclines inward toward the shaft of the auger to prevent binding in the post-hole and to throw the cut and loosened earth inward and remove it from a position which would cause it to bind the auger if the clearance-plates were not used.

The attachments are simple of construction, cheap, and effective, and the operation of the auger is as follows: When the post-hole is being bored, the front or cutting edges of the clearance-plates shear the loose earth above the face-plate of the auger, andthe inward inclination of the clearance-plates from their cutting to their rear edges forces said earth inward toward the auger-shaft, where it collects, so that it cannot pack in the post-hole, outside of the auger and its attachments. Thus when the auger is lifted out of the posthole there will be little, if any, friction between the sides of the latter and the clearance-plates, and the air can readily permeate below the face of the auger and prevent the partial vacuum so often formed there when using augers having no such attachments. The clearance-plates moreover serve to trim the post-holes and render them smooth and regular and to cut off roots that may proj ect therein. Thus the post-holes made by the described means are in every way better than those usually made.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United Statesl.' The clearance-plate attached to the edge IOO of the boring face-plate of an earth-auger, standing upward from said edge, having a front and advancing edge beveled outward and inclined upward and rearward to the direction of rotation of the auger, and standing in a plane parallel to the auger-shaft, and a rear edge inclining upward toward the augershaft, substantially as specified. V

2. The combination, with an an ger provided with a bit having a circular face-plate or boring-plate, of two clearance-plates secured at opposite points to the edges of the boringplate, having rearwardly-inclined outwardlybeveled front cutting-edges standin g in planes parallel to the auger-shaft and the'rear edges inelining inward toward the auger-shaft, substantially as specified.

In testimony that I Claim the foregoing as my own I have hereunto affixed my 'signature .in presence of two witnesses.

hi WILLIAM s EAGLEsToN.

mark Witnesses:

D. D. CLAYTON, ALLEN SMALLEY.

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