US432705A

US432705A - Earth-auger

Info

Publication number: US432705A
Authority: US
Publication date: 1890-07-22
Anticipated expiration: 1907-07-22

Description

(No Model.)

A. V. HARTLE.

EARTH AUGBR.

No. 432,705. Paten'ed July 22, 1890i.y

Illllllll lIHH Hl Ulli' "7 d//M/ /JWWM/ AMERICUS V. IIARTLE,

EARTH- TnNT FFICE.`

OF MARSEILLES, OHIO.

Auena.

SPECIFICATION forming part of Letters Patent No. 432,705, dated July 22, 1890.

Application iiled May 3, 1890.

To all whom it may concern.:

Be it known that I, AMERIcUs V. HARTLE, a citizen of the United States of America, residing at Marseilles, in the county of Vyandot and State of Ollio, have invented a new and useful Improvement in Earth-Angers, of which the following is a specification.

My invention has relation to improvements in earth-angers ot that. kind usually employed for forming post-holes and similar excavations, and the object is to provide an implement of the kind named, which will not only expeditiously bore a post-hole, but one which, when so desired, may be readily withdrawn from the excavation with the loosened earth.

Another object is to provide suoli an auger with an air-vent combining the functions of a reamer which may be adjusted and set at a position to travel at a greater distance from the axis of the auger than the perimeter of the auger.

I have fully and clearly illustrated my invention in the accompanying drawings, wherein-.-

Figure l is a view of my improved earthauger having the combined reamer and airvent rigidly Iixed thereto. Fig. 2 is a view of the saine having the combined reamer and air-vent made adjustable thereon. Fig. 3 is a view in detail, in enlarged scale, of the combined reamer and air-vent.

A designates the handle of the auger,wh ich is of the desired length and provided with a cross-piece l at the top, by which the implement is turned in the operation of excavating. B vdesignates. the auger, consisting of the usual flat blades, having their meeting or boring edges curved into a scroll in crosssection and turned slightly upwardand downward at opposite edges or ends, substantially as shown. These blades are properly braced or stiiened at their connection t0 the stern by any suitable means, as seen at 2. To one of the blades, at the outer edge or perimeter, is att-ached one end of my combined reamer and air-vent 3, which consists of a verticallyarranged narrow plate 4, having sharpened edges and formed with a central channel 5, extending for its length and across the thick- Serial No. 350,458. (No model.)

ness of the auger-blade. The upper end. of the plate is bent down at substantially right angles and has the end secured to the stem, as seen at 6'.

As it may be necessary or desirable at times to reain the hole out larger than the bore of the auger, I provide for the purpose by making Athe combined reamer and air-vent adjustable on the auger, as follows: The plate 4 is turned upward to a plane corresponding to the face of theaiiger-blade,fori11ing a foot 7, in which are formed elongated slots 8, engaging on threaded studs 9 in the augerplate and adjustably held thereon by nuts l0. The part 6 may be formed with a fork ll, to straddle the stem of the auger, and the adjustment made by a bolt projected through the holes and screwed up to clamp the stem. IVhile the adjustable feature of my invention is useful, the rigid reamer and vent-piece is all that is essential to complete practicability.

The earth-auger thus cnonstructed not only has its utility enhanced by the cutting of the reamer in the earth, but when the augerwith its load of earth is to be withdrawn the ventgroove aii'ords free access of air below the auger, and it is drawn out impeded only by the weight of the soil thereon. It will be observed thatas the auger progresses in the operation of boring the reamercuts the earth free at the edges of the hole, and at all times the air has access to the bottom of the hole `through the vent in the reamer.

Having thus described my invention, what I claim is l. An earth-auger consisting of a stem and auger-blades and a combined reamer and airvent consisting ot a vertically-arranged narrow plate having sharpened edges and vformed with a central channel extending the length thereof, said plate having its lower end secured to the outer edge ot' one et the augerblades and its upper end braced to the augerstem, substantially as described.

2. In an earth-auger, the combination of the anger provided with threaded studs and nuts, the auger-handle7 and the combined reamer and air-vent consistingof a verticallyarranged narrow plate having a central groove IOO extending thelength thereof, and formed With In Witness whereof I have hereunto set my a foot-piece having slots to engage the studs hand in the presence of two attestng Witon the auger, and an inwardly-turned arm at nesses.

its upper end to engage the handle, whereby A. V. I-IARTLE. the renmer and Vent-piece may be adj ustably Vimesses: secured to Jche auger, substantially as and for THOS. L. BARTON,

the purpose specified. v S. S. SIMPSON.