US954510A - Ground-anchor. - Google Patents

Description

H. FUGHS.

GROUND ANGHOR.

AEPLIOATION :FILED SEPT. zz, 1909.

Patented Apr. 12, 1910.

nvEenmF HEINRICH FUCHS, OF FRIEDRIGHSFELDE, NEAR BERLIN, GERMANY.

GROUND-ANCHOR.

Original application iled May 28, 1909, Serial No. 498,891.

Specification of Letters Iatent.

Patented Apr. 12, 1910.

Divided and this application filed September 22, 1909. Serial No. 518,995.

To all whom it may concern:

Be it known that I, HEINRICH FUCHS, a subject of the German Emperor, and residing at Friedrichsfelde, near Berlin, Germany, have invented certain new and useful Improvements in Ground-Anchors, of which the following is a specification.

Myl invention relates to anchors and a primary object is to provide an improved ground anchor which can be taken to pieces, having a tubular shank and pivoted arms, and arranged in such manner that after the folded anchor has been placed in the ground, it is spread out when the shank is pulled. The arms are detachable from the shank, so that when the anchor is being removed from the ground the shank and the arms can be withdrawn separately, which facilitates the anchor being obtained again.

One const-ructional form of anchor according to my invention is represented by way of example in the accompanying drawing, in which:

Figure 1 is an elevation, partly in section, the detachability of the shank from the arms being obtained by means other than those used in the form shown in my co-pending application Serial No. 498,891, filed May 28,' 1909, and Figs. 2 to 5 show various details of the anchor.

Referring to the drawing the anchor consists substantially of the shank p, four arms el, carrying springs Z, the chains h1, and the attachment means hereinafter described. Instead of detaching the arms from the shank by withdrawing keys, as in my copending application, this is done by using a tubular shank p, which may be an ordinary iron pipe, containing movable holding means which will now be described. Namely, in this pipe a spindle 1' is mounted between two fixed disks g, g, said spindle being squared at its top end and able to be turned by a loose key, About in the center of the spindle and at its bottom end, at which places the same is screw-threaded, are provided cross pieces s (Fig. 3) which are guided in slots in the pipe p by means of pins 25. The cross pieces have pegs or tongues u, around vwhich the end links 'v of the chains 71.1 or the links fw of the arms e1 engage.

The anchor is used as follows: It is put into the ground in known manner by boring a hole into which the folded anchor is placed. The springs press the arms outwardly, so that the outwardly bent points of the arms are pressed into the sides of the hole. Now when the shank is pulled, the points of the arms will engage in the ground. As the shank is continued to be pulled the arms will open until the chains 77.1 are stretched and prevent them opening far ther. In this position the anchor offers its greatest resistance. The anchor is not removed from the ground by digging it out, as is otherwise the case, but by detaching the arms from the shank p by raising the cross pieces s by rotating the spindle r and removing their tongues u from the links o and the links lw. The shank is rst removed from the hole and then the arms are individually withdrawn by means of their ropes m or the like. The parts thus obtained again can be assembled, and the anchor can be used afresh.

I claim:

1. An anchor comprising in combination, a tubular shank, screw-threaded holding means therein, a plurality of arms detachably and pivotally attached at the bottom portion of said shank to said means, and

means detachably and movably connecting said arms at a higher portion of the shank to said means, for the purpose specified.

2. In an anchor which can be dismembered, the combination, with a tubular shank, of screw-threaded holding means therein, an arm pivotally attached to the bottom portion of said means, a spring o n said arm, and a chain attached near the point of said arm and engaging the upper portion of said means.

3. In an anchor which can be dismembered, the combination, with a perforated tubular shank, of a spindle revoluble therein, said spindle having a lower screw-thread and an upper screw-thread, an upper cross piece having a tongue movable on said upper screw-thread, a lower cross piece having a tongue movable on said lower screw-thread, an arm, a link attached to the bottom end of said arm and normally passing around the latter tongue, and a chain attached to said arm and normally held by the former tongue.

HEINRICH FUCHS. Witnesses:

WOLDEMAR HAUPT, HENRY HASPER.

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