US256457A

US256457A - Earth-auger

Info

Publication number: US256457A
Authority: US
Publication date: 1882-04-18
Anticipated expiration: 1899-04-18

Description

(No Model.)

7 W. BRENNER.

EARTH AUGER. '1

No. 256,457; Palfented Apr.18,1882

Fig. .2

UNITED STATES PATENT OFFICE.

WILLIAM BRUNNEB, OF NORTH LEWISBURG, OHIO EARTH-'A'UGER.

SPECIFICATION forming part of Letters Patent No. 256,457, dated April 18, 1882. Application filed January 20, 1882. (No model.)

To all whom it may concern Be it known that I, WILLIAM BRUNNER, a citizen of the United States of America, residing at North Lewisburgfin' the county of Champaign and State of Ohio, have invented certain new and useful Improvements in Earth-Augers; and I do hereby declare the following to be be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to that class of earthangers which comprise a screw-threaded handle and a cross-bar adapted to receive the handleand support the plates and blades of the auger; and my invention consists in the combination of elements hereinafter more fully described, and specifically set forth in the claim.

I Figure 1 is a perspective of the cross-bar and plates constructed in accordance with my invention, and Fig. 2 is a front or side elevation of the complete auger. Fig. 3 is a top view of the cross-bar and plates.

Like letters of reference indicate like parts in all the figures.

A represents the handle,"screw-threadedat a to adapt it for attachment to the bar B, the aperture b in which is also screw-threaded, and

thus adapted to receive the pointed end a of handle A, and by means of the screw-threads to be securely attached thereto.

To the bar B, by rivets or bolts 0 c, are secured two plates, 0 0, each of which is a little more than a half-disk or semicircular in outline, the excess or portion beyond the diametrical line being at the center removed in order that the remaining portions thereof may be bent upward at one side of said center to form a blade, d, anddownward at the other side of said center to form a blade, d. The inner ends of the blades which incline upward abut against the sides of the cross-bar, thus rendering its I attachment thereto more firm against displacementduring its operation in boring in the earth. In other words, the liability to twist the blades against the bar.

upon the bar is prevented by the screws, and these are greatly assisted by said abutment of In like manner blades 0 e of plate 0 are formed. The opposite blades of each plate are disposed in upward and downward directions relatively to each other, but parallel throughout their lengths, and are disposed in parallel diametric lines, and are separated, so that there is an open space extending entirely across the auger, and neither blade overlaps the opposite blade, as clearly shown in the drawipgs, and thus is constructed and arranged what may be termed a double-bitted and reversible-bladed auger, for in operation itis capable of being used with either of the blades d and e at thebot-tom or the blades d and e, the direction of movement being from left to right, as is usual in this class of implements, whereby when one set of blades becomes dull the user has simply to unscrew the handle and turn over the plates and bar without removing the plates from the bar, and

screw the handle into the bar again, when the constant action of the earth thereon, and so they are fitted for use at the" bottorn'again. Each blade also is of such shapethat it may be reversed independently of the other and of the bar.

I do not broadly claim a reversible anger; but

What I claim as new, and wish to secure by Letters Patent, is-

In an earth-auger, the combination of the screw'threaded and pointed handle A, the bar B, and the plates 0 O, the blades of which are disposed in slanted parallel lines, with the inner ends of those inclined upward abutting against the bar, substantially as shown and described.

In testimony whereof I have affixed my signature in presence of two witnesses.

. WILLIAM 'BRUNNEB. Witnesses:

H. G. PARTRIDGE, A. D. PALMER.