US1875139A - Anchor - Google Patents

Description

Allg. 30, 1932. W R POUNDER 1,875,139

ANCHOR Fil'ed Nov. 20. 1931 v /5 Mae/2MP:

Patented Aug. 30, 1932 Sura WILBUR R. POUNDER,

OF CHICAGO, ILLINOIS, .ASSIGNOR TO HUBBARD da C0., OF CHICAGO,

ILLINOIS, A CORPORATION OF ILLINOIS ANCHOR Application led November 20, 1831. Serial No. 576,320.

i, My invention relates to "anchors,l more particularly to anchors comprising a rod and Va formed head containing integrally formed l aware, to provideanchors consisting of a rod cont'aininga head in which is formed a thimble eye or a plurality of thimble eyes for the reception of strain members. l r"iChese thimble eyes are themselves shaped as round bottom grooves extending throughV the head of the anchor in an arcuate path of long radiusso that arstrain member, such as a vstranded guy wire, can be'attached directly .to the guy rod without the use of separate shield members or thimbles.f

` `Such anchors are provided with rods several feet in length to permit the use of the anchor as a guy rod, and are also provided with rods that `are but several inches in length to permit the use of the anchor for attaching a strain member to a pole top.

My present invention improves the anchors of the prior art by providing a head arranged to receive one, two or three strain members, the head being shaped so that the stressesV placed upon the rods by a single strain member, or by two strain members, or by three strain members, are extended axially along the rod itself.. My improved anchor head is self-braced againstV deformation under stresses placed upon it by a single strain member, or by two strain members, or by. three st-rain members. My improved anchor is very rugged, and can be economically fabricated and cheaply installed.

' My invention will be best understood by reference to the accompanying` drawing in which a preferred embodiment of it is shown byway of example only and in whicha- Figure 1 is a perspective view ofv the anchorvwith ak single strain member attached thereto; .Y y

p Figure 2 is a perspective view of the anchor with two strain members attached thereto;

Figure 3 is a perspective view of the anchor with three strain members attached thereto;

Figure 4 is a planview of the anchor; and Y Figure 5 is a fragmentary cross sectional view of the anchor taken substantially along the line 5 5 of Figure 4 looking in the direction of the arrows. l

As will be seen in Figures 4-and 5, my improved anchor comprises a strain rod 1 having an integrally 'formed head indicated generally at 2. This head comprises a pair of arcuate arms 3 and 4 diverging from the end of the rod to form the wide portion of the head 2. At the outer end of these arms 3 and 4 are extensions 5 and 6 which converge toward a point located beyond the head2 and on the axis of the anchor rod 4. These arm extensions 5 and 6 together form the narrow outer portion of the head structure. l

At the junction of the arm portions 3 and 5 and 4 and 6, respectively, is a transverse bridge wall 7 formed integrally with the arm members, and shaped to define an opening 8 which is shaped substantially as a cardioid.

he arm extensions 5 and G are joined together by a thimble portion 9 which is shaped to form aI substantially circular opening 10 located in the narrow outer part of the head 2.

As will be seen in Figure 5 the walls of the cardioid opening are of elliptical cross section and there are no sharp corners or projections that would tend to injure a strain member upon coming into contact with the same. The cross member or bridge wall 7 is likewise formed of generally elliptical cross section for the same reason, and the end wall 9 of the head is similarly formed.

The bridge wall 7 contains two portions 11 and 12 each of which comprises a round bottom groove 13 that extends in an arcuate path 14 through the head of the anchor. The configuration of this groove forms the so-called thimbleye or thimble against which a strain member is adapted to lie without the intervention of a. separate protecting thimble. The 'radius of the arcuate path 14 is suihcient to prevent a strand disposed in the groove from being sharply kinled at any one point. This eliminates concentrated strain on the strand and anchor andrnininiizes the likelihood of damage to the protective coatings Olathe anchor and strand. The two thimbles 11 and member engaged with the'other.

12 are separated by a projection 15 which prevents a strain member engaged with one of them from coming into contact ywith a strain The anchor head'is provided with a third Y thimbleyei or Ythimble formedin the end piece 9 and comprising a round bottom groove 16 defined by wall members 17 and 18 of the head structure. This groove extends inian arcuate path from the end piece 9, through the perforation and backto the endl piece 9, and is of sufficiently long radius to permit a strain member to be engaged with it without the interventionv of a protecting thimbl'e. The side wall members 17 and 18 risingy outotI the groove 16 at one of its ends, and correspondingmembers -17 and 18, rising out of the groove at the opposite end, serve to retain the strain member inaccurate ref istration withv the thimb'le.

The anchor of my .invention is preferably mad-e from round steel rod stock `which is first heated and upset by endwiseforging to gather metal for the head. The head is then shaped,

i preferably by a drop forging operation made with suitable dies which are shaped to form the inside ysurfaces of the 'head rin smooth arcuate contour so that there are no sharp such as, for example, Yby the usual Yand well j known hotrgalvanizing process. Y

i As will vbe seen in Figures '1, 2 and 8, vthe strain members that are registered w-ith'the anchor may be stranded members such as are commonly employed as messenger strands,

guy wires, v"and thelike. If desired, solid wires or rodsmay be equally Well attached to my improved anchor;

Aswillbe seen in Figure 1, when a single strain member 20 is registered with theanchor it isjthreaded through the single perforation 10 lin the small portion of the anchor and .broilght into registrationk with the thimble16 formed therein. This thimble Abends the Vmember 20 in an arcuate path so that 'it may -Y lbejregistered with a suitable clamping/device 2l by which Aitis heldv inplace.

-Stresses placed upon the anchor by'y thel n single strain member 20 iintension are `communicated fromfthe end piece 9 of the head through arm yextensions 5 and 6 to the arcuate arms 3 and 4 Vand through these arms to the rod 1.v This tension will tend to straighten the arms 3 and 4`by`drawing their free ends together towards the centerline or axis of the rod 1, however the bridge wall 7, consisting of thimbles 11 and 12, reinforces the Vanchor head at the'junction of the arm extensions 5 and 6. with the arms Briand 4 respectively, and the forces tending to'bring the free ends of the 1 arcuate arms Sand 4 togethery will place thisV Thus vthe bridgewall 7 yunder compression. l bridge vwall 7 is made. to resist the tendency of the stresses placed upon the anchor through the strain member 20 engaged with thimble 16 to deform the head of the anchor. YWith thev strainmember 20 properly aligned with respect to the anchor the strains setupin it are :equally dividedy betweenthe arms Sand 4 of the head' and transmitted thereby'axially i along the'anchor rod. The rodv thus placed y in tension and; there are no forces'present tendingto'bend or distortvthe same.

In many. instances it may be advantageous to register two strain members 22 and 23 with the anchor, iny which 'case` these members-"are threaded through the cardioid opening 8f and brought into registration .with the thimbles.`

11 and 12, respectively. The projection 15 on the bridge Wall 7 preventsthe members 22 and 2 3 from' coming into Contact with each other. When properlyV` aligned .Y so kthat fthe.

axis of the vanchor rod 1 bisects the angle beftween f the strain members .22 and l23 Ythese members place a stress upon theanehor which is transmitted equally through arms 8,*andr4 to the rod 1. "This places the arms '3 and-4 yunder a tension which Vtends tof straighten them, and underthese circumstances they arm n extensions jand 6 serve to reinforce the head and prevent itsl deformation. The stresses which tend to straighten thelarms 3 and 4l are communicated to `those arms through the bridge wall'7, and thesesame forces will tend to separate .thearmexten's'ions 5 and 6. This separation j is prevented by the integrally formed end wall 9 which is thus placed in tension to prevent thearm 'extensions V5 and 6 `no i fromseparating, and'thus to prevent'deformation of .Y the Y anchor vhead kby v thel ystrain placed upon it by stra-in members V22 and 23. In Figure 3 I have illustrated my improved anchor with three strain members 24,25 and 26v attached to it.y The member 24 is registered s with the thimble 16 and places stresses upon the anchorin the same manner as the strain member 20 yof Figure 1. vStrain members' 25 and 26 are registered. with thimblesll and izo 12, respectively, andstress the anchor in thev same kmanner as strain members 22 andv 23 of Figure 2.` Itwill be noted that theprojed tions 17 and 18 and'-17 and 18 vseparate the strain members 25 and 26 from the thimble 15 f las y and the strain member 24 registered therewith Y and each of thestrain members aretherefore Y independently registered with the anchorrfaild capable of being t'ensionedl to the required 'degree Without interference "from fthe Others.

the axis of the anchor rod l, the resulting force placed upon the rod by these members is along the axis of the rod and there is no tendency for the rod to bend or twist.

In Figure l I have shown the anchor with its head 2 disposed in a vertical plane, that is with the openings 8 and 10 running transversely through it along a substantially horizontal axis. In Figures 2 and 3 I have shown the anchor with its head disposed in a horizontal plane and with the openings 8 and 110 therein extending along a substantially Vertical axis. These two positions of the anchor are shown by Way of example only as the anchor may be turned about its axis into any desired position to meet the requirements of existing conditions. Preferably the anchor is used in the manner shown in Figure l. In this position the side arm members or" the head protect the surface of engagement of the strain members with the thimbles and the tendency of the strain members and thimbles to rust along that lline of engagement will be thereby minimized. Y

e The rod 2O may be made ina number of different lengths to meet particular requirements. If my improved anchor is used as a guy rod, the rod l will be several feet in length and its free end, not shown, may be threaded for the reception of a nut by which itis attached to a dead man. The free end of the rod may be provided with a suitable head for registering it with the now commercially available anchor plates. It the anchor is used as a pole top strain member, the rod l will be only oi sulicient length to extend through the pole and its free end will be threaded for the reception of a nut by which it is attached to the pole. The diameter of the rod l will of course depend upon the desired strength to be built into the anchor. With a rod l of a particular diameter and the head 2 proportioned with respect thereto as shown in Figure 4i, the head structure itself will be stronger than the rod and the anchor will therefore have the maximum strength possible with that particular diameter oi' rod.

While I have chosen to show my invention .by illustrating a preferred embodiment oit it, I have done so by way of example only as there are many modifications and adaptations which can be made by one skilled in the art within the teachings of the invention.

VThat I consider new and desire to have protected by Letters Patent is pointed out in the appended claims.

lVhat is claimed is l. A strain bolt comprising a rod and a head containing a plurality of thimbles for receiving a single strand and/or a pair ot strands, said thimbles being arranged in two groups, one group comprising a single thimble centered on the axis of the rod and the other group comprising two thimbles located between said single thiinble and said rod and equidistant from the axis of said rod, each of said thimbles being formed to allord a round bottom groove extending through the anchor head in an arcuate athot lone* C l radius for receiving a strain member.

2. A strain bolt comprising a rod and a head containing a plurality or" thimbles for receiving a single strand and/or a pair of strands,said thimbles being arranged in two groups, one group comprising a single thimble centered on the axis of the rod and the other group comprising two thiinblcs located between said single thinible and said rod each of said thimbles being formed to afford a round bottom groove extending through the anchor head in an arcuate path oit long radius for receiving a strain member 7 the walls or" said heao adiacentsaid single thimble and `between said two thimbles vforming guides for preventing a strain member inone oi said grooves from coming into contact with the strain members in the other grooves.

3. A strain bolt comprising a rod and an `integrally formed head having awide portion adjacent the rod and a narrow portion at its free end, there being an opening of substantially cardioid shape in the wide portion ot said head and a substantially round opening in the narrow portion thereof, the walls of said openings being formed withy round bottom grooves extending through the head in arcuate paths of long radius for receiving strain members.

4. An anchor comprising a rod and a perforate head containing two openings separated by a bridge wall, said wall containing two thimbles i'or receiving strands passed through one of said openings and said head containing a Vthimble for receiving a strand passed through the other one of said openings.

`5. An anchor comprising a rod and a perforate head containing two openings separated by a bridge wall, said wall containing two thimbles centered equidistantlyirom the kaxis ofV said rod for receiving strands passed through one 01"' said openings, and said head containing a thimble for receiving a strand passed through the other one of said openings.

6. yAn anchor comprising a rod/and a perforatc head containing two openings sepaand equidistant from the axis oi' said rod, 399

l rated by a bridge wall, saidwall containing two thimbles for receiving strands Ypassed through one of said-openings,l and said head containing a thimble centered on the axis of ysaid rod for receiving ar strand passed through the other one of said openings.v

7. An anchor comprising a rod `and aperoratehead containing two openings separated by a bridge'wall, there being a pair of thimbles on saidbridge wall separated by an Y larcuate projection located substantially on the axis of said rod,- said thimbles being 1 adapted to receive apair of strands projected y of thimbles joining the junctions of said arms and extensions. r

'through one of said openings and said pro- '.jectionbeing adapted to separate said 'strands and to keep them in registration with said anchor by strand `encircling said first thimble. c

In :witness whereof, lk hereunto subscribe i i my naine this 17 day ofc-Nov., 1931.

thinibles, and a third thiinble in said head for i receiving a strand passed through theother fone of said openings.

`8. "An anchor comprising a yrod. terminating in a hea-d formed integrally therewith, vsaid head ooinprisinga pair of arcuate arms of oval section extending from the end ofthe rod `and merging into yextensions which converge toward the 'axis' of the rod, a thimble joining theends of said extensions and a pair 9. anchor comprising a rod., a pair' of arcuate arms formed Yintegrally with the end ofsaid rodpapair of thimbles formed integrally with the free ends-of said arms and l spaced kequidistantly from the axis of said rod, extensions of said'arms converging. be-

integrally withsaidarm extensions and centeredupon` the axis of'said rodysaid arm extensions andthe intervening thimble bracing said arms against-deformation by strains placed upon saidpair of thiinbles.

` 10. In `anaiichor in whicha pair of'adja- Y youd Saiathimbies, and' athimbiafomea f Gently disposed thimbles are connected tof a l vrod by-a pair of Vintegrally formed arcuate Y 4karms extending from theioutside ends ofthe i thimbles, a brace for enabling said arms vto resist bending under strains placed on said -thimbles k'comprising integral extensions of said arms'converging-rom the ends of saidy thimbles and joined together on .the side of A I said thiinbles away from said rod.

, 1'1. An anchor comprising a rod, a pair of f .armsfformed integrally with the rodV and di- Y verging in arcuate paths from the end thereof, extensions on said arms converging to-'- vward a point on jthe axis of said rod beyond said arms7 a thimble j oining-the Afree endsof Y said arm'extensions, a pair of thiinbles formed as a.l bridge wall connecting said arms vat' c the junctions of said extensions therewith, c saidiirst thimble and arm extensionsbraoing said arms against'deformatioii under Vstresses placed on said'anchor by strands'encircling Y said pair of thimbles,V and said'pair of thiml t5 c V bles bracing saidarins and extensions against deformation under stresses placedv on.` said seV

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