US915784A - Earth-anchor. - Google Patents

Description

F. B. MILLER.

EARTH ANCHOR.

APPLICATION FILED MAE.30,1908.

91 5,784. Patented Mar. 23, 1909.

' sides of the hole.

UNITED FRANK B. MILLER, 0F NORWALK, onio.

. EARTH-ANCHOR.

Specification of Letters Patent.

Patented llarch as, 1900.

Application filed March 30, 1908. lei-1.1110. 484,118.

To all whom it may concern:

Be it known that I, FRANK B. MILLER, a citizen of the United States, and resident of Norwalk, in the count of Huron and State of Ohio, have invente certain new and useful Improvements in Earth-Anchor, -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 a form of folding anchor, adapted to hold firmly in the ground, and to provide an efficient and serviceable tool havin great simplicity in construction and absofute rigidity and capacity for resisting all pulling strains.

The device is ada ted for use with the guy ropes of derricks, te egraph and electric wire po es and in all situations where resistance to a ulling strain is required.

he invention comprises a hinged plate adapted to fold in onl one direction and to resist any force applie to open it in the other direction, in a draw bar by means of which the guy rope or wire may be attached thereto and in for ed arms to the draw bar having a natural spring action tending to fold the hinged sides of the plate together and therefore reduce the extent of the spread thereof so that the anchor can be inserted into acomparatively small hole in the ground. An important feature of the invention is the effect of the mechanical construction of the hinged blades to provide a tog le joint such that when compressed from aiove an increased ower is obtained to force the ti s of the bla es outward into the ground at tiie The invention in detail consists in the combination and arrangement of parts, and forms of construction, hereinafter described, shown in the accompanying drawings and specifically pointed out in the claim.

In the accompanyin drawings, Figure 1 is a perspective view of t e device showing the blades in the horizontal position; Fig. 2 is a s1rmlar view showing t e blades artially folded in the ordinary position rea y for insertion in a hole in the ground; Fig. 3 shows the device in the hole ready for spreading the blades and in dotted lines the blades are shownextended in the horizontal position; Fig. 4 1s a longitudinal central section of one blade showing manner of attachment of the forked draw bar; Fig. 5 is a perspective view of oneT shaped-end of the forked draw bar.

In these views 1, 1 are the blades hinged together on the lower side at 2 in such a mannor that their meeting edges form shoulders at 3 so as to oppose any effort to fold the blades in an upward direction.

Pivotally secured to the blades and extending upward from their u per sides are the arms 4 of a fork which orms the termination of the draw bar 5. These arms tend to draw together and fold the blades back to back so that when in the normal condition they are ready for insertion in the hole made for them, but permit the blades to be expanded after insertion in the hole, by pushing ulpon the centrall placed hinged ed es, an t usbyloweringtiecentralportiomt eed es are extended as shown in dotted lines in ig. 3. The ti s of the blades are curved upward to assist t em in entering the ground.

The expandingl force 18 applied as in a toggle joint, unt' the arms are spread to a horizontal position. The hole is then filled with dirt, tam ed down hard and no amount of pull upon t e draw bar can fold or release the anchor, since the anchor can be folded onl by raising the central portion thereof.

'l he fork ends are preferably T headed at 8 for simplicit in construction and are inserted in suite le slots 9 in the blades.

I believe myself to be the first to provide an anchor composed of hinged blades adapted to fold in only one direction and to attach a draw bar thereto at points spaced from the hinged edges and extendin at an angle to the planes of the blades an contrary to the direction of folding the blades.

Having described the invention what I claim as new and desire to secure by Letters Patent is In an earth anchor, the combination with blades hinged together and adapted to fold in one direction only, of draw bar extremities attached thereto, said draw bar extremities forming a spring fork ada ted to retain the blades in a partially folde osition.

In testimony whereof I ereunto set my hand this 24th day of March 1908.

FRANK B. MILLER. In presence of- WM. M. MONROE, Ensns'r T. HALL.

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