US228044A - Earth-auger - Google Patents

Description

UNITED STATi-zs PATENT GFFICE..

ANDREW J. DINE, OF XENIA, INDIANA.

`EARTH-Ancre.

'SPECIFICATION forming part of Letters Patentl No.` 228,044,4dated May 25, 1880. Application filed No'vember 6, 1879.

` form a part of this specification.

Figure l is an elevation, partly in perspective, of my improved earth-auger, sho wing the handle for turning it, the central rod to which the other parts are axed, the sheet metal worm or screw for raisingI the earth, the cut-V ting-blade, with its upwardly-projecting lip, the arm connected therewith for regulating the depth of the cut, a screw -rod for aiding the feeding of the auger, and an arm for supporting the upper end of the sheet metal worm;

and Fig. 2 is a transverse section, partly in' perspective, of the parts above enumerated, with the except-ion of the handle.

Corresponding letters denote like parts in both of the figures.

Thisinvention relates to that type of devices which are denominated earth-angers 5 and it consists in the construction and in the combination of some of the parts of which it is conlposed, as will be more fully explained hereinafter.

In constructing implements of this character there is provided a rod, A, which is of any length desired or made necessary by the depth of the hole to be bored, the implement being designed for use principally in the boring of holes for the reception of fence-posts. To one end of this rod there is attached, in any suitable manner, a handle, B, for turning the implement, and upon itslower end there is formed a corkscrew-like projection, (l, which is designed to aid in feeding the implement, or in forcing it into the earth as it is turned around.

Upon the rod A, and near or at the lower end of its straight portion, there is aiixed a hub, D, which has extending from it a blade, D', which, so soon as it leaves the hub D, is widened out, as shown in Fig. l of the drawy ings, and is set at such an angle to the horizontal axis of said hub as to cause its upper surface to form a part of the spiral or worm which carries the earth upward, :and at the same time causes its forward and cutting edge D2 to be its lowest part, so that the act of cutting or loosening the earth in the bottom of the hole shall cause said blade to act in combination with the screw G in feeding the implement.

From the point of. hub D, which is opposite or nearly opposite that to which the blade D is attached there extends another blade or arm, E, the under surface of which is in a horizontal plane somewhat above that of the cuttingedge oi' the blade D, in order that the depth of the cut of earth by said blade may be controlled, and the implement, as a whole, be prevented from being too rapidly forced into the earth.

Upon the upper forward points of the cutting-blade D and the blade E there are formed or afxed vertical projections F and F', the object of which is to press the earth outward upon the interior surface of the hole, and thus prevent it from falling inward as the implement is withdrawn, or while it is in use.

For the purpose of providing a worm or spiral passage for giving an upward direction to the earth that is loosened from the bottom of the hole by the blade D', there is secured to its upper rear edge a piece of metal, G, preferably of thin steel or sheet iron, because when made of sheet metal the implement will be of less weight, and consequently more easily handled, than it would be if the worm were made of cast metal. It may, however, be made of cast metal vand be so thin as not to be particularly objectionable. From the point where this sheet joins the blade it extends upward in' the form of a worm or spiral until it has passed several times around the rod or shaft A, where its upper end is secured to an arm, H, which is keyed to the rod for the purpose of holding it in position thereon.

The blade D being permanently lixed to the rod Aand the intermediate part G being made of thin sheet metal, while the arm His adjustably affixed to the rod, it follows that the pitch of the spiral G may be changed at'pleasure, and so as to be coarser or finer, as circumstances may require, which will be found to be IOO of great advantage in using the implement in different kinds of soil, as the earth removed by the blade can by these means be closely packed Within the Worm or spiral, or allowed to merely rest upon the upper surface of each of the coils. It Will follow7 as a matter of course, that if a cast-metal Worm is used the spaces between the coils cannot be changed; but even under such circumstances the implement will be found to be useful.

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

1. The hub D, having upon one portion of its periphery a blade, D', which is at such an angle to its horizontal axis as to cause it to form a portion of the spiral or worm which carries the earth up Ward, said hub having upon another portion of its periphery a blade or arm, E, the upper and lower surfaces of which are in horizontal planes for the purpose of preventing the auger from entering the earth too rapidly, substantially as set forth.

2. rIhe combination of the central rod, A, the hub D, blades or arms D and E, worm C, spiral G, and adjustable arm H, all constructed and arranged for operation substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 21st day ot' October, 1879.

ANDREW J. DINE.

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