US708247A - Well-auger. - Google Patents

Description

No. 703,247. Patented Sept. 2, I902.

- 12. u.- NEWELL.

WELL AUGEB.

(Application filed Dec. 1, 1899.)

m: norms PETERS cov PHOTO-LITHO.. WASHINGTON. n. (L

UNITED STATES PATENT OFFICE.

RALPH O. NEWELL, OF VENUS, NEBRASKA.

WELL-AUGER.

SPECIFICATION forming part of Letters Patent No. 708,247, dated. September 2, 1902.

Application filed December 1,1899. Serial No. 738,939. (No model.)

To all whom it may concern.-

Be it known that I, RALPH O. NEWELL, a citizen of the United States, residing at Venus, in the county of Knox and State of Nebraska, have invented a new and useful Improvement in Earth-Angers, of which the following is a specification.

My invention relates to devices for drilling holes in earth; and it consists of means hereinafter fully described, and specificallypointed out in the claims.

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings, Figure I represents a cross-section of a device embodying my improvement, taken upon the planes indicated by lines 1 1, Fig. II. Fig. II represents a plan view of such improvement.

A hollow cylindrical'drum or auger-blade support A is provided with two oppositelylocated slots a, in which are respectively hinged the auger-blades B'. Secured to the inside of said drum are two springs a, which respectively engage the blades B and urge or tend to urge same radially outward, so as to project from the supporting drum, as shown in Fig. II. Each blade is provided with a stop b, secured thereto, each consisting of an upwardly and a downwardly projecting member adapted to contact the inside of the drum, limit the outward radial movement of the blades, and thereby determine the di-' ameter of the hole or boring which may beformed with the auger. An auger-stem O is secured so as to be coaxial with the drum and to project upwardly therefrom by means of angle-irons D, secured to the inner drumsurface and the lateral faces of the said stem. A double bracket E is secured to said stem and journals two pulleys 6, one on each side of said stem, respectively located adjacent to said slots at, as shown. The upper end of said stem is joined with the auger-rod F by means of a coupling consisting of a metal sleeve G, fixed to said rod by means of bolts 9 g. In the lower end of said sleeve is transversely fixed a bolt g, passing into and through a slot 0, elongated in the direction of the stemaxis, thereby permitting said stem, drum, and blades to have a limited amount of axial or longitudinal movement upon said rod. Above said sleeve and passing transversely through said rod F is a bolt f, projecting laterally from both sides of said rod, to which are attached the upper ends of two cords or chains H, which respectively pass around the pulleys e and have their other extremities secured to the auger-blades, as shown. The length of said cords or chains is made such that when the rod F is drawn upwardly, so as to cause the bolt g to contact the upper end of slot 0, the blades will have been drawn inwardly, so as to substantially coincide with the auger-drum, as shown in dotted lines in Fig. II and to permit the said blades to assume their outermost position. (Shown in full lines in said figure.)

In the operation of drilling into soil or earth the above-described construction of the device permits the rod F to assume its lowermost position, and thereby allow the blades to assume their extreme outermost position. After a hole has been formed and it is desired to withdraw the auger the rod F is drawn upwardly, the first portion of its movement effecting no upward movement of the auger. Such first movement, however, effects the inward or closing movement of vthe blades, which is followed by the upward withdrawal of the auger. Such construction and operation of the above described device permits the insertion of curbing into the hole formed having an outer diameter equal to or less than that of said hole, inasmuch as the auger may be raised or lowered inside such curbing while the blades are in their closed position. Such closed position is maintained by the weight of the auger when suspended from rod F during such raising or lowering.

Other modes of applying the principle of my inventionmay be employed instead of the one explained, change being made as regards the mechanism herein disclosed, pro- ..vided the means stated by any one of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention 1. In an earth-auger, the combination of movement, each blade provided with a stop adapted to limit such movement, an augerrod attached to said drum and movable relatively thereto, and cords or chains connecting said rods and blades, whereby said rod may be caused to actuate said blades to withdraw from their outward positions.

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

RALPH O. NEWELL. Witnesses:

J. H. MEREDITH, O. L. BRIGHT.

Images