US977757A - Anchor. - Google Patents

Description

L. N. STEWART.

ANCHOR.

APPLICATION FILED MAR.5. 19o9.

Patented Dec. 6, 1910.

Wihwoou UNITED STATES.

PATENT OFFICE.

' ,LEMUE'L N. STEWART, or aennor; mrssounr, LASSIGNOR To GEORGE H. ,FURBEGK, 01?

ST. JOSEPH, MISSOURI.

ANCHOR.

Specification of Letters Patent.

Application filed March 1909. Serial No. 481,230.

. citizen of the United States, residing at ,Agency, in the county of Buchanan and State of Missouri, have invented certain new and useful Improvements in Anchors, of

which the following is a specification.

This invention .comprehends certain new and. useful improvements in devices of that type designed for use in anchoring the cables of suspension bridges, the guys of hoisting machines, or the like, and the invention has for its object a simple, durable and efficient construction of anchor which is susceptible of being readily and positively expanded after having been embedded in position in the earth, so as t.o.increase its a bearing surface upon the latter, and hold the anchor effectually against any accidental displacement, when subjected to excesslve strain.

With this and other objects in view that will more fully appear as the description proceeds,- the invention consists in certaln constructions and arrangements of the parts that I shall hereinafter fully describe, and then point out the novel features thereof in the appended claims. For a full understanding of-the invention and the merits, thereof, and to acquire a knowledge of the details of construction, reference is to be had to the following de scription and accompanying drawing, in which:

Figure 1 is a side elevation of an anchor constructed in accordance with my invention; Fig. 2 is a longitudinal section thereof; Fig. 3 is a detail perspective v ew, showing the upper ends of the arms in Juxtapos1- tion; and, Fig. 4.- isa top plan new of the arms, illustrating the interlocking connection between the upper ends thereof.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawingby the same reference characters.

A land anchor constructed in accordance with my invention consists essentially of two separable anchoring arms 4 whlch are formed at their lower or rear ends with outstanding perpendicular flanges or flukes 5. The arms are formed at their upper or forward ends with pairs of inwardly disposed spaced ears 6 which are interlocked so that one ear of each pair is positioned between the spaced ears of the other pair. The said ears which are received between the spaced ears of the other pair, are termed the inner ears and are each formed with anoutstanding pintle 8. .The pintles 8 are arranged upon the relative lateral movement of the arms in a direction to space the inner ears apart transversely in abutting relation to the respective outer-ears, to be engaged in apertures 7 formed in the outer ears (see Fig. 4). Pivotal connections are thus established between the adjacent inner and outer ears, it being noted that the pintles are disposed in transverse alinement, whereby the arms are associated for free turning movement about a transverse axis. a

A rod serving as the shank or stem 1 of the anchor is arranged to be inserted between the inner. ears and serves to maintain the same spaced apart suflicientlyto retain the pintles 8 in the apertures 7, whereby to prevent the anchoring arms 4 from becoming accidentally disconnected. At its forward or upper extremity the shank is bent into. the form of an eye 2 for the attachment of a'guy- Wire or the like. Below this eye the shank is threaded, as indicated at 3, a

nut 9 being positioned at the forward end of the threaded portion and being arranged in front of the interlocked ears 6 and abutting against the same to serve as a stop to limit the rearward longitudinal sliding movement of the shank therethrough. A

Washer 10 is preferably mounted on the shank between the nut and the ears to relieve the parts of wear.

The rear end portion of the shank passes freely through an opening 11 formed at the apex of a framelike wedge 12 which is interposed between the free ends of the anchoring arms 4, the shank being also adapted to be accommodated in a second'opening 11 formed in the base of the wed e in longitudinal alinement with the openlng through the apex. The legs of the wedge are received in and guided by recesses formed in the inner or-adjacent edges of the flukes 5 (see Figs. 1 and 3). A nut 13 works upon the threaded portion 3 within the frame like wedge and bears against the apex thereof and is fitted snugly between the legs of the wedge so as to be held thereby against any relative turning movement.

In the practical use of my improved anchor, the same is placed in a suitable hole Patented Dec. 6, 1910.

iii

or excavation in the earth or cement or the i like, in the usual manner, with the forward requisite direction, but inasmuch as the stop 9 prevents the shank from moving rearwardly between the arms 4, it will be manitest that this movement works the nut forwardly upon the threaded portion 3, which thus draws the wedge between the arms 4: to spread the same apart and elfect theexpansionr'o'f the anchor and increase the bearing surface-thereof upon the earth. After this operation is completed, the cable or guy rope is attached to the eye 2, and it will be seen that by virtue of the arrangement just described, it will be securely maintained in position against any loosening even when subjected to excessive strain.

From the foregoing description, in connection with the accompanying drawing, it will be apparent that I have provided an improved anchor which is adapted for use in securing the ends of cables or guy ropes, or for other purposes generally; which is susceptible of being conveniently expanded after having been placed in position; which embodies to a marked degree the characteristics of simplicity, durability and efficiency in construction and operation, and which consists of comparatively few parts that may be easily and cheaply manufactured and readily assembled.

Attention is particularly directed to the fact that by removing the wedge 12 and the nut 13 from the rear portion of the shank, the latter may be withdrawn from between the interlocked. ears, whereby to permit the anchoring arms to be shifted laterally to withdraw the pintles from the corresponding apertures 7. The disconnection of the arms may thus be accomplished with facility when occasion demands, so that the anchor may be completely knocked down and its parts stowed away within a small compass, as is manifestly desirable for shiping purposes or the like.

Having thus described the invention, what I claim is:

1. Aland anchor including separable anchoring arms formed at one end with pairs 1 of spaced. ears interlocked with one ear of each pair positloned between the ears of the other pair, one ear of each pair being formed with a pintle pivotally engaged with the adjacent ear ofthe other pair upon the relative lateral movement of the arms in one direction to space the innermost ears apart, a removableshank passing between the innermost ears of the interlocked pairs and maintaining said innermost ears spaced apart to hold the arms in pivotal association against separation, and means for spreading apart the free ends of said arms.

2. A land anchor including separable anchoring arms formed at one end with pairs of spaced ears interlocked with oneear of each pair positioned between the ears of the other pair, one ear of each pair being formed with a pintle pivotally engaged with the adjacent ear of the other pair upon the relative lateral movement of the arms in one direction to space the innermost ears apart, a removable shank passing between the innermost ears of the interlocked pairs and maintaining said innermost ears spaced apart to hold the arms in piv0tal association against separation, the shank being movable longitudinally between the ears, a means carried by the shank forspreading apart the free ends of said arms by'and upon the relative longitudinal movement of the shank.

3. A land anchor including separable anchoring arms formed at one end with pairs of spaced ears interlocked with one ear of each pair positioned between the ears of the other pair, one ear of each pair being formed with a pintle pivotally engaged with the adjacent ear of the other pair upon the relative lateral movement of the arms in one direction to space the innermost ears apart, a shank passing between the innermost ears of the interlocked pairs and maintaining said innermost ears spaced apart to hold the arms in pivotal association against sep aration, attaching means provided at one end of the shank, and means carried at the other end of the shank for spreading apart the free ends of the arms, said spreading means being detachable from the shank to permit the same to be withdrawn from be-- tween the ears.

In testimony whereof I afiix my signature in presence of two witnesses.

LEMUEL N. STEW'ART. [Li's] Witnesses:

C. F.BRIGHT, W. R. CAMPBELL.

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