US283753A

US283753A - Post-hole digger

Info

Publication number: US283753A
Authority: US
Publication date: 1883-08-28
Anticipated expiration: 1900-08-28

Description

(No Model.)

O. L. CARTER.

POST HOLE BIGGER. r No. 283,753. Patented Aug. 28, 1883.

UNIT D TATns CLEMENT CARTER, OE UNION CITY, INDIANA.

POST-HOLE DIGGER.

SPECIFICATION forming part of Letters Patent No. 283,753, dated August 28,1883. I

Application filed July 5, 1883. (No model.)

To all whom it may concern Be it known that I, CLEMENT L. CARTER, of Union City, in the county of Randolph and State of Indiana, have invented certain new and useful Improvements in Post-Hole Diggers; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form -a part of this specification, and in which Figure l'is a perspective view of my improved post-hole digger or earth-auger. Fig. 2 is a sectional view of the same. Fig. 3 is a View of my auger-blade with my secondary blade attached.

Similar letters of reference indicate corresponding parts in each figure.

My invention has relation to post-hole diggers; and it consists in the improved construction and combination of parts of a post-hole digger having two concavo-convex blades and two secondary blades. The concave-convex blades are secured rigidly to the lower end of two bars hinged together, and each bent side- Ward to form the handles, and having means for holding them adjustably together, as hereinafter more fully described and claimed.

In the accompanying drawings, the letters A A indicate the two cutting-blades,which are concave-convex, and their cutting-edge His perpendicular, excepting about two inches of the lower end, S, is cut at an angle of fortyfive degrees with the perpendicular cuttingedge H. The blades A A are rigidly connected to the lower ends of the two bars 0 O, which are bent a short distance above the cuttingblades A A, so as to be parallel one upon the other, with their flat surfaces together, and are hinged at f. The upper ends of the bars 0 O are bent sideward to form the handles D D. The notched bar F is hinged to one of the bars 0 under the handle at (Z, The object of the notched bar F is to engage by means of the notches with the lug e to hold the bars 0 C rigidly in position. The lever E,-being pivoted to the notched bar F at b, and resting on the lug 6, forms a combination by means of which the operator, by lifting the lever E, disengages the notched bar F, when the auger can be opened or closed at will.

In the construction of my improved postauger blades for an ordinary-sized auger, I cut the steel ten inches long and five inches wide. The upper cutting-edge, H, is left straight eight inches; the lower two inches.

S is cut at an angle of fortyfive degrees with the cutting-edge H. The opposite lower edge, 0, is slightly rounded or pointed. The edges H S 0, Fig. 3, are sharpened for cutting purposes. The blades are then bent or curved to correspond with the sized hole the anger is intended to out.

My attachment or secondary blade is not intended for boring purposes, but only for reaming after the hole is made: It is made of steel, about eight inches long and three inches wide, with straps of iron or other metal riveted near one edge. These straps are bent at each end, as seen at a a, Fig. 2, so as to fit the primary augenblades. When the auger will not make a hole as large as desired, one' of the secondary blades, as seen at B, Fig. 1, and the detached blade, Fig. 3, is attached to each of the auger-blades. The hole can then be reamed to'almost any size desired, making a valuable attachment for setting telegraph-poles.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States 1. The secondary blades B, in combination with the primary blades A A, as and for the purposes set forth. 7

2. The lever E, in combination with the notched bar F and the lug e, as and for the purposes set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

CLEMENT L..CARTER. [L. s.]

\Vitnesses:

11F. BRAGG, E. S. BRADBURY.