US963791A - Earth-anchor. - Google Patents

Description

152B. MILLER,

EARTH ANCHOR.

APPLICATION IILED JAN. 22, 1910.

Patented July 12, 1910,

FRANK B. MILLER, or NORWALK, o'HIo.

EARTH-ANCHOR.

'S pe'ciflcationof Letters'Patent. Pate'ntd July 12, 1910.

Application filed January 22, 1910. Serial No. 539,611.

To all whom it may concern:

I Be it known that I, FRANK B. MILLER, a citizen of the United States, and resident of Norwalk, in the county of Huron and State of Ohio, have invented certain new and useful Improvements in Earth-Anchors, of

which I hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

The objects of the invention are to provide an expansible retaining anchor for telegraph, telephone and electric trolley wire supports, or poles, the primary improve ment therein having reference to the positive and powerful mechanism employed to expand or laterally elongate the same.

The invention is designed for use in the bottom of a hole du in the earth, and the expansible ortion o the anchor is adapted to be exten ed laterally beyond the sides of the hole and thereby to take advantage of the weight of the solid earth above its expanded edges.

The devlce is used in connection with a straining rod or draw bar to which a straining or tension rope is attached which connects the draw bar with the pole and needs no further description herein.

The invention comprises a central body and stem and laterally movable members and instrumentalities for giving a direct and positive movement to said members, which is equally powerful throughout all portions of the movement. 7

The device is hereinafter further described, shown in the accompanying draw- In these views 1 is a preferably circular or disk shaped base plate in which is loosely secured the lower end of the draw bar, 2.

Upon this base rests the laterally movable anchor members or flukes 3, 3, which slide upon the body portion 1 and are radially slotted at 4:, 4, to receive the draw bar 2.

Upon the lower surface of each anchor fluke is shown a lug5 which is adapted to enter the diametrical slot 6, in the base portion 1, and guides the anchor members as they are moved in and out upon the base portion which is designed to remain stationary in the bottom of the hole. To operate the anchor members 3, 3, a disk 7 is secured to the draw bar 2, and upon the underside of this is shown a vertical spiral or cam shaped flange 8 which is adapted to en age the rack teeth 9, 9, upon the upper sur aces of the anchor members 3, 3, and draw them in and out simultaneously in opposite directions as the disk 7 is rotated. Thls may be accomplished by means of any suitablewrench such as shown at 10 in Fig. 5, and the prime feature of advantage gained is found in the positive movement resulting from the action of the spiral flange, since the anchor members are moved with equal power at all times. The anchor members are preferably duplicates and two in number but any number suitably spaced can be employed. A shoulder or thimble such as a upon the rod 2 prevents the retaining nut N at the lower end of the rod from binding upon the parts so as to prevent movement thereof.

Having described the invention, what I claim as new and desire to secure by Letters Patent'is:

1. In an earth anchor, a base plate, a draw bar loosely connected therewith, a pair of anchor members or fiukes, diametrically and laterally movable on said base plate, a rack on each anchor member, and a spiral engaging device for said racks, said spiral engaging device operatively connected with sa1d draw bar.

2. In an earth anchor, in combination, a base plate, a draw bar, loosely connected therewith, diametrically movable anchor,

members or flukes slidingly mounted upon said spiral engaging device operatively eonsaid base plate, said base plate provided with nected with said draw bar. 10

a guiding means operatively connected with In testimony whereof, I hereunto set my a corresponding guiding means in said hand thls 4th day of December 1909.

anchor members, a radial rack on each FRANK B. MILLER. anchor member, a spiral engagin device In presence of therefor, whereby said anchor mem ers are EDGAR L. MARTIN,

simultaneously moved in opposite directions, C. P. VENUS.

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