US167353A - Improvement in earth-augers - Google Patents

Description

.D. L. N EW GU M B.

Earth-Auger.

Patented Aug. 31, 1875.

, the weight of a column of water of from five DAVID L. NEWOOMB lMPROVEMENT IN on KENT'ON, onro.

EARTH-AUGERS.

Specification forming part of Letters Patent No. 167,353, dated August 31, 1875; application filed April 28, 1875.

T0 all whom it muy concern:

Be it known that I, DAVID L. NEWCOMB, of Kenton, in the county of Hardin and State of Ohio, have invented certain new and useful Improvements in Earth-Augers, of which the following is a specification:

My invention consists in constructing an earth-anger in such a manner that it will bore a hole larger than its diameter, and so arranged that one of its wings will bug the side of the well closely, while the other is free to turn in the space left between'the casing of the anger and the hole, and in providing one of the vertical wings of the casingwith a projecting flange of a Width equal to the excess of the diameter of the hole and the anger, and of the same length as the casing. This flange serves to keep the space between the anger and the hole free from earth, forcing the same constantly into the casing between the wings, thus avoiding all danger of the angers becoming packed or wedged in the hole, allowing such anger to be withdrawn with great facility whenever desir-ed or required.

The diificulty enconntered in boring wells is not in the actual boring, as most of the augers now employed will do the work effectually, but itisin the withdrawal of the anger from the hole when filled with earth, for the purpose of emptying the same; and this difficulty increases in proportion as the hole becomes deeper, ow-

ing to the atmospheric pressure, as well as that of the earth on and around the anger when the latter hugs the sides of the well closely, which thus forms an air-tight, or almost airtight, packing, and added to this freqnently is to twenty feet above the anger, so that it is only with the greatest difficnlty that it can be withdrawn.

Many deviceshave been employed to overcome and remedy the defect, such as hollow tubes or hollow shaftin g, which, however, have proved inefl'ectual, owing to their liability to become clogged or choked easily. I am.also aware that augers constrncted with capability of boring a hole of greater diameter than their own have been employed; but their action is such as to leave a space all around the anger, which is easily filled with loose earth, and during the operation becomes packed in between the sides of the well and the casin g of the anger, remedying the defect only under certain conditions, while at the same time the boring action of the anger is diminished, and when packed in it will require a great amount of power to extract it, which frequently results in breakage of the shafting or the anger itself, and the object of my invention is to remedy effectnally these difficulties.

In order that my invention may be fully understood, Iwill proceed to describe the same in detail by aid of the accompanyin g drawin gs.

Figure 1 is a perspective view of an anger constrncted according to my invention, showing its position in relation to the sides of the well or hole when in operation. Figs. 2 and 3 are top and bottom plan views of the same.

A is the anger, composed of the ring a and the spider b, to which the shafting is attached. c d are two vertical wings forming thecasing, and these wings are affixed to the ring a and the bit e. The vertical segmental wing c is affixed to the ring a and bit e in rear of the cutting-lip f, while the wing dis affixed to th ring a and bit e in front of the cutting-lip f. The cutting-lip f of the bit e is set at an angle to the vertical segmental wings c d, in such a manner that the point or edge f is caused to project downward and ontward beyond the periphery of the anger snfficiently to bore a hole the dameter of which will-be greater by one and a half inch, more or less, than the dameter of the anger.

It will be seen that by this construction and arrangement, when the anger is rotated and in the act of boring, the power exerted by the cutting-lip fon the earth will canse the wing cin rear of said lip to hug the side of the hole closely, while the wing d in front of the cutting-lip is separated from the side of the well by the space formed by the anger boring a hole of greater diameter than its own, into which water or loose earth enters freely. In order to obviate the packing of the earth in the space above mentioned, thereby wedging the anger air-tight, or almost air-tight, in the hole, I provide a vertical projeoting flange, D, affixed to the wing d on the right side thereof, and of the same length as the wing d. This flange projects ontward from the periphery of the anger a distance equal, or nearly so, to the excess of ATENT FFICE.

the diameter of the holethat is to say, the flange has a Width of one and a half inch, more or less, and scrves to keep the space between one side of the anger and the side of the hole free from loose earth, forciug the same into the casin g during the revolution of the anger.

It is obvious that by these means the difficulty of extracting the anger, when packed tight, is efl'ectually overcome, since no packing can take place, and, when desired or required, the anger may be readily withdrawn, expediting the work, and effecting a great saving in power and repairs arising from the 1iability to breakage in the withdrawa1 of augers when packed or wedged in the hole.

In witness that Iclaim the foregoing I have hereunto set my hand.

DAVID L. NEWCOMB.

Witnesses:

FRED. M. CHILDS, G. SHMAN.

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