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Publication numberUS2468729 A
Publication typeGrant
Publication dateMay 3, 1949
Filing dateOct 5, 1945
Priority dateOct 5, 1945
Publication numberUS 2468729 A, US 2468729A, US-A-2468729, US2468729 A, US2468729A
InventorsBlack Eric A
Original AssigneeBlack Eric A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2468729 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

y 1949- E. A. BLACK 2,468,729

ANQHORAGE Filed Oct. 5, 1945 FIGI IN V EN TOR.


Application October 5, 1945, Serial No. 620,619

(Granted under the act of .March 3, 1883, as amended April 30, 1928,; 370 0. G. 757) 2 Claims.

The invention described herein may be manufactured and used by or for the Government for governmental purposes, without the payment to me of any royalty thereon.

The present invention relates to anchorages.

In connection with the construction of radio towers and the like, it is necessary to sink guy anchorages in the ground about them. Due to the upward tension on said guys, ordinary solid or hollow piles are not usually entirely satisfactory. Hence anchors having outwardly extending fiukes of some kind are usually used. These however are more difiicult to sink than the simple pile type anchorages.

It is therefore the primary object of the present invention to provide anchorages which may be installed with the relative ease of installation of simple pile type anchorages, but which nevertheless have the holding power of fluke type anchorages.

It is another object to provide a fluke type anchorage which is adapted to be sunk with its flukes unextended but which incorporates means for readily extending said fiukes after the anchorage has been sunk.

It is another object to provide such an anchorage which may be installed in different types of ground.

It is a further object to provide such an .anchorage, wherein the fiukes may be set by explosive means.

It is a still further object to provide such an anchorage which may be easily extracted from relatively soft ground.

These, and other objects and advantages .of my present invention, which will be better :understood as the detailed description thereof progresses, are obtained in the following manher:

I provide an anchorage which comprises a hollow pile which is relatively easy to sink, and a plurality of fiukes which are unextended while the pile is being driven into the ground but which may be caused to be extended outwardly from said pile, by means of explosive charges, after the pile has been sunk.

In the accompanying specification there is described, and in the annexed drawing shown, what is at present considered a preferred embodiment of my present invention. It is however to be understood that my present invention is not limited to said embodiment, inasmuch as changes therein may be made without the exercise of the invention and within the true spirit and scope of the claims hereto appended.

In said drawings,

Figure 1 is a vertical sectional View of an anchorage embodying the present invention, wherein the hollow pile is shown in position in the ground and the lowermost pistol has been positioned therein andis ready for firing;

Figure 2 is a plan view of Figure 1;

Figure 3 is a View similar to Fig. l, the parts being shown after three pistols have been positioned and fired;

Figure 4 is a horizontal sectional View, taken along the line 4-4 of Figure 3; and

Figure 5 is a horizontal sectional view taken along the line 55 of Figure 3.

Referring now to the drawings, the anchorage illustrated includes a hollow pile H which is pierced by two openings l3 in register near its upper end which are receivable .to a through bolt 14, to which a guy (not shown) may be secured. Said pile H is fabricated of a metal,

such as aluminum, which has the necessary tensile strength, but which nevertheless may be pierced by a projectile type fluke as will become clear hereinafter.

The anchorage shown will also include a plurality (ordinarily three) of fluke pistols l5, each of which comprises a vertically disposed, steel, shallow cylindrical body ll of a size to slidably fit the inside of the pile ll. Diametrically positioned within the said bod I! is a horizontally disposed cylindrical barrel chamber 19, at one end of which is a circular, axially disposed, muzzle opening 2| of lesser diameter than the barrel chamber I9.

As may be seen in Figure 1, prior to firing of the pistol, there is positioned at the other end of the barrel chamber IS a disk .of explosive charge 23, and immediately above it is a percussion cap 25. Above the said cap 25 is 'a hammer opening 21 receivable to an elongated percussion hammer rod 29.

A blind, internally threaded hole 3| extends a short distance down into the center of the top of the body ll. Threadable into said hole 3| is a pistol placing rod 33 (Figures 1 and 2) which is longer than the pile H and is threaded at one end.

Positioned within the chamber I9 and muzzle opening 2| is a projectile 35, which is made up of a rod-like fluke 31 (of a diameter to slidably fit the said muzzle opening 2|) having at one end a cylindrical head 39 (of a size to slidably fit the barrel chamber 19). Before the pistol I5 has been fired (Figure 1), the head 39 of the projectile 35 is positioned at the inner end of the barrel chamber [9 and abuts the explosive charge 23, and the outer end of the fluke 37 is substantially flush with the outer end of the muzzle opening 2! after firing (Figure 3) the head 39 is disposed at the opposite end of the barrel chamber l9 and the fluke extends through the muzzle opening 2i and outside the pistol body H.

The pistol placing rod 33 may be supported axially within the pile H, at any vertical position, by a clamp 4| which comprises two metal straps of a greater length than the diameter of the pile II which straps are secured to each other :at one end, and are adjustably spaced at the other by means of a bolt and wing nut 43.

In the use of the anchorage just described, the pile H is first sunk into the ground 45 in any suitable manner. For instance, in soft ground the pile l I may be sunk by alternately ramming with a follower and a sledge and digging out the soil inside with an augur; and in hard ground by drilling a hole with an augur or stone drill and sinking the pile ii therein. A pistol placing rod 33 is then threaded into the hole 3i of one of the pistols l5 and the latter is slid down the inside of said pile H to a position somewhat above the lower extremity thereof. The said pistol 15 may be sustained in that position by means of the clamp M which rests upon the upper end of the pile i I and is tightened about the rod 33 by means of the wing nut 43.

The percussion hammer rod 29 is then extended down through the pile H and into the hammer opening 27 until it rests upon the percussion cap 25. The percussion cap 25 may then be set oiT by means of a hammer blow on the upper end of said hammer rod 29. The firing of ll until it rests upon the first pistol l5, but with its muzzle aimed in a different direction, preferably one hundred and twenty degrees therefrom, and it too is similarly fired. One or more additional pistols may be lowered and fired (three being shown in the drawings). The pistols l5 are preferably oriented so that their fiukes, when extended, are positioned in helical arrangement about the pile ii. If the ground is soft the anchorage may then be removed by rotating the '29 removed, a guy bolt pile H, the flukes acting as a screw thread and thus allowing the lower flukes to come up through the ground broken up by the uppermost fluke. After all of the pistols have been fired and the clamp 4i, pistol placing rod 33 and. hammer rod l4 may be inserted through the holes 13 for the attachment of a guy (not shown).

A certain specific form of the present invention has been described and illustrated above as an example. The invention, however, is to be limited only by the scope of the appended claims.

What is claimed is:

1. In an anchorage, a hollow pile, a fluke pistol member snugly fitting within said pile and positionable slidably within said pile, said pistol member including a projectile having a fluke and a head of greater diameter, explosive means to propel the fluke through the wall of the hollow pile, and means within the pistol member to retain the head within the pistol member.

2. In an anchorage, a hollow pile; a fluke pistol comprising a shallow metal cylinder snugly fitting within said hollow pile and positionable slidably in longitudinal and rotary directions within said pile, and pierced by a substantiallytransverse barrel chamber provided with a muzzle opening of less diameter than the balance of the chamber, and provided with a projectile positioned within said chamber and having a fluke to slidably fit said muzzle and a head of sufiicient diameter to prevent its passing through said muzzle, and provided with an explosive charge within said chamber; detachable means operable from one end of said pile to position said pistol within said pile and to sustain it in any desired position; and detachable means operable from one end of said pile to fire said explosive charge; whereby the projectile may be fired so that the fluke will pierce the pile and extend laterally therefrom and the head being unable to pass through the muzzle will remain within the chamber.


REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 854,073 Bruckner et al May 21, 1907 1,746,848 Bates Feb. 11, 1930 1,961,591 McArdle et a1 June 5, 1934 2,266,352 I Zschokke Dec. 16,1941 2,269,646 Burke Jan. 13, 1942 2,381,929 Schlumberger Aug. 14, 1945

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US854073 *Sep 14, 1906May 21, 1907Arthur F BrucknerCurtain-fastening device.
US1746848 *Aug 23, 1928Feb 11, 1930Walter Bates Steel CorpEarth anchor
US1961591 *May 18, 1932Jun 5, 1934Knudsen Thorkild RSalvaging apparatus
US2266352 *Jan 27, 1941Dec 16, 1941Lane Wells CoGun perforator
US2269646 *Jul 11, 1940Jan 13, 1942John W GreeneGround anchor
US2381929 *Aug 1, 1941Aug 14, 1945Marcel SchlumbergerWell conditioning apparatus
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2878649 *May 19, 1954Mar 24, 1959California Research CorpRetractable bearing shoes for caissons
US2936194 *Jul 8, 1957May 10, 1960Zaech EmileShip and submarine salvaging device
US3018752 *Jun 24, 1959Jan 30, 1962Sorrell Ray TProjectile anchors and anchoring emplacing devices
US3419089 *May 20, 1966Dec 31, 1968Dresser IndTracer bullet, self-sealing
US3525187 *Nov 5, 1968Aug 25, 1970Pan American Petroleum CorpExplosively driven submarine anchor
US3720262 *Jan 21, 1971Mar 13, 1973Grable DMethod and apparatus for sub-surface deformation of well pipe
US3974604 *Sep 25, 1974Aug 17, 1976Conn J LEasy anchor
US4339000 *Aug 28, 1980Jul 13, 1982Cronmiller Clifford PMethod and apparatus for a bridge plug anchor assembly for a subsurface well
US4733994 *Nov 24, 1986Mar 29, 1988Simanjuntak Johan HDriven pile with transverse broadening in situ
US4813816 *Oct 27, 1987Mar 21, 1989Simanjuntak Johan HDriven pile with transverse broadening in situ
US4889451 *Oct 27, 1987Dec 26, 1989Simanjuntak Johan HDriven pile with transverse broadening in situ
US8578884Feb 4, 2010Nov 12, 2013John M HawkIlluminated drinking system
DE1634593B1 *Oct 23, 1967Sep 24, 1970Gottfried Dipl-Ing SeelingVerankerungsglied für Erd- bzw. Felsanker
DE4430203A1 *Aug 26, 1994Feb 29, 1996Goetz StahlbauGround=anchor for detachable park=bench etc.
U.S. Classification52/155, 405/244, 166/55.2, 72/325
International ClassificationE02D5/80
Cooperative ClassificationE02D5/806
European ClassificationE02D5/80E