US2942313A

US2942313A - Adapter for pulling eye

Info

Publication number: US2942313A
Application number: US786201A
Authority: US
Inventors: Gerald A Petersen
Original assignee: Individual
Current assignee: Individual
Priority date: 1959-01-12
Filing date: 1959-01-12
Publication date: 1960-06-28
Anticipated expiration: 1977-06-28

Description

June 28, 1960 a. A. PETERSEN 2,942,313

ADAPTER FOR PULLING EYE Filed Jan. 12, 1959 INVENTOR Gerald A. Petersen g aggy? United States Patent 2,942,313 ADAPTER FOR PULLING EYE Gerald A. Petersen, Saratoga, Calif., Petersen Engineering Co., 461 Kifer Road, Santa Clara, Calif.

Filed Jan. 12, 1959, Ser. No. 786,201

6 Claims. (Cl. 24-126) This invention relates to a new andimproved adapter for pulling eyes of the type installed on anchor rods for guy wires and particularly used to install preformed guy grips.

Conventionally, an anchor rod is located in the ground and has an eye on its exposed portion through which passes the guy grip which is attached to the end of a guy strand. It is necessary during attachment of the guy grip to the guy strand to pull the guy wire and to employ the anchor rod as a means of applying the strain to the guy strand. Thus, one common useof the present invention is in the installation of preformed guy grips. In the 7 installation of the preformed guy grip, a pulling eye is fastened to the upper end of the anchor rod and a grip is also passed around the guy wire at a point remote from the anchor rod. Thereupon, the grip and pulling eye are drawn toward each other. This permits installation of the preformed guy grip. Inasmuch as guy rods vary in diameter, it has heretofore been necessary to use various types of adapters for pulling eyes to accommodate the various sizes of rods. The present invention provides a means for adapting a pulling eye to a variety of different sizes of guy rods.

Thus, an important feature and advantage of the present invention is the fact that a single pulling eye and a single adapter may be employed to accommodate a number of different sizes of guy rods.

A further feature and advantage of the invention is the rapidity and ease with which the adapter may be shifted from one position to the other in order to accommodate different diameter guy rods.

A still further feature of the invention'is the fact that it is not necessary to stock diiferent, sizes of adapters, but a single adapter may be used for the various diameters of rods.

A still further feature of ness of the device.

Another feature of the invention is the fact that the adapter may be installed in the pulling eye at the factory and held in place during transportation to the site.

The instant invention may also be used to provide an extra eye on an existing anchor rod in instances where a second guy strand must be installed for some reason. Thus, although ordinarily the present invention is installed, used and then removed, nevertheless, it may be left in place on the anchor rod as a permanent extra eye.

Other objects of the present invention will become apparent upon reading the following specification and referring to the accompanying drawings in which similar characters of reference represent corresponding parts in each of the several views.

In the drawings:

the invention is the compact- Fig. 1 is a perspective view showing the device in use.

Fig. 2 is an enlarged vertical mid-sectional view.

Fig. 3 is a view similar to Fig. 2 showing the adapter in a different position of adjustment to accommodate a larger diameter guy rod and showing the adapter in elevation.

ice

2 Fig. 4 is a top plan view of the adapter as viewed from above in Fig. 2 or 3.

The present invention is used in connection with a guy rod 11 which has at its top an eye 12. A preformed guy grip 13 passes through the hole 14 in the eye 12 and is preformed in a loop 16, by doubling the wire 13, back upon itself. .As viewed in the accompanying drawings, the invention is employed to install a preformed guy grip.

,In the installation of the preformed guy grip, a temporary connection between the rod 11 and the upper por- 7 tion of a guy wire (not shown) is made and the two drawn together. Although the grip for the guy wire is not shown in the accompanying drawing, it is well understood in the art and is attached to one end of a tool, to the opposite end of which is attached a chain 21 having a swivel 22 at its lower end to which is fastened a hook 23. The hook 23 passes through the eye 26 of the pulling eye 27. By

tightening the tool, the hook 23 transfers the strain from the guy wire to the anchor rod 11.

The pulling eye 27 consists of a U-shaped body having parallel arms 28 and a connecting portion 29. The eye 26 is an arcuate projection from the connecting portion 29. The arms 28 are apertured as indicated by reference numeral 31 and a'bolt 32 passes through the apertures and is held in place by nut 33.

Extending downwardly from one side arm 28 is a vertical pigtail extension 36 having a forwardly disposed abut ment 37. The general shape of the extension 3637 is that of a pigtail which wraps around the anchor rod 11. The constructionis such that when bolt 32 is removed, the pulling eye maybe installed around the anchor rod 11 without dislodging rod 11 from the ground in that a continuous opening is provided or throat extending longitudinally of the pulling eye to accommodate rod '11. When the bolt 32 is replaced, the pulling eye cannot be removed from the anchor rod inasmuch as the thickness of the anchor rod eye 12 is greater than the opening between side arms 28.

The diameters of anchor rods 11 vary considerably. Thus in Fig. 2 a small diameter rod is shown whereas in Fig. 3 the rod 11 is of greater diameter. Heretofore various types of bushings have been employed with pulling eyes to accommodate the varying thicknesses of rods. This has required a dififerent bushing for each rod diameter. The present invention eliminates the necessity of separate bushings for each size.

Accordingly, the present invention employs an adapter 41. Adapter 41 has an upper rod contacting pad 42 and a lower rod contacting pad 43 both of which face the throat in which rod 11 is located. Each of these pads is formed with an

arcuate surface

44 and 46 respectively which fits around the anchor rod but it is not necessary that the fit be snug. Thus a single radius of curvature will accommodate various diameters of rods. To restrain turning of the pulling eye relative to the rod 11, a notch 47 may be formed in the top surface of the top pad 42 and this receives a corner 48 of the eye of the rod 11. Pad 42 is formed at the top with a pair of projections 51 separated by a groove 52.

Notches

53a, 53b and 53c are cut in extensions 52 having a radius of curvature equal to that of bolt 32. Thus, one of the notches engages bolt 32 and by reason of the varying elevations of the notches 53a to 530 and the fact that they are progressively closer to pad 42, the adapter is raised or lowered relative to the pulling eye. Thus in Fig. 2 the bolt 32 engages the upper notch 5311 which causes the adapter 41 to be depressed and also to be closer to connecting portion 29, whereas in Fig. 3 the bolt 32 engages the notch 53c which causes the adapter to be elevated and to move away from connecting portion 29. This accommodates different diameters of rods 11, such as large diameter rod 11a.

The surface 56 of the adapter 41 opposite lower pad 43 is.formed with a taper of about relative. to the common plane of

pads

42, 43 which is the same angular relationship as the notches 53a to 530. The tapered surface S6Ebears' against abutment 37 of the 'pigtail. Accordingly, when the notch 53a engages bolt 32, the pad 42 bears against the small diameter :rod 11 and simultaneously by reason of the fact that the adapter 41 is depressed and the taper of surface 56, the pad 43 also engages the rod 11. However, when the adapter is raised to the notch 53b, the pad 42 is spaced fromthe connecting portion 29 a greater distance and at the same time the pad 43 is moved closer to the abutment 37. Similarly, when the notch 53c engages the bolt 32, an even greater diameter rod such as that designated by reference numeral 11a may be accommodated.

The adapter 41 is thus employed to accommodate a wide variety of rod diameters. It may readily be installed and removed by removing'and then replacing retaining bolt 32. However, when the device is shipped from the factory or stored between uses, bolt 32 prevents displacement and consequent loss of adapter 41 from the pulling eye.

Although the foregoing invention has been described in some detail by way of illustration and example for purposes of clarity of understanding, it is understood that certain changes and modifications may be practiced within the spirit of the invention and scope of the appended claims.

I claim:

1. In combination, a pulling eye comprising a body having a pair of spaced apertured sides and a connecting portion, a depending pigtail, an eye connected to said body and a bolt passing through the apertures in said sides, said pulling eye being formed with an elongated longitudinal throat to receive the shank of an anchor rod; and an adapter for said pulling eye dimensioned to fit between said sides and at least partially within said throat and having at least one pad positioned to bear against an anchor rod in said throat, said adapter being formed with a plurality of notches in the side of said adapter opposite said pad each shaped to receive a portion of said bolt, said notches being located at varying elevations and at varying distances from said pad, whereby upon fitting said bolt in .said notches the space :between said pad and said connecting portion may be varied to accommodate anchor rods of different sizes.

2. The combination of claim 1 in which said adapter is formed with a notch in its upper edge adjacent said throat to receive a projection on said anchor rod to restrain rotation of said pulling eye relative to said anehor rod. 7

3. In combination, a pulling eye comprising a body having spaced, apertured, forwardly projecting sides and a onnecting portion at he back. o pro i e a thre t for passage of an anchor rod and a downward pigtail extension wrapping at least partially around the downward projection of said throat and having an abutment portion at the front, a bolt passing through the apertures in said sides, and an eye on said body; an adapter fitting between said sides'at least partially within said throat and having an upper pad located facing said throat to bear against an anchor rod in said throat and formed with a plurality of notches opposite said upper pad to receive a portion of said bolt, said notches being located I at varying distances from said pad.

4. In combination, a pulling eye comprising a body having spaced, apertured, forwardly projecting sides and a connecting portion at the back to provide a throat for passage of an anchor rod and a downward pigtail extension wrapping at least partially around the downward projection of said throat and having an abutment portion at the front, a bolt passing through the apertures in said sides, and an eye on said body; an adapter fitting between said sides at least partially within said throat and having an upper pad located facing said throat to bear against an anchor rod in said throat and formed with a plurality of notches'opposite said upper pad to receive a portion of said bolt, said notches being located at varying distances from said pad, and at varying elevations, a downward extension having a lower pad facing said throat and a tapered portion opposite said lower pad bearing against said abutment portion.

' 5. An adapter for a pulling eye to accommodate varying sizes of anchor rods comprising an upper pad formed with an inner edge surface and an outer edge surface, said outer edge surface being located opposite said inner edge surface and formed with a plurality of notches, said notches being located at varying elevations and the inner surfaces of said notches being located at varying distances from said inner edge surface .of said upper pad, and a downward extension having a lower pad having an inner edge surface and an outer edge surface located opposite said inner edge surface, said inner edge surface of sm'dlower pad lying substantially in a downward projection of said inner edge surface of said upper pad and said outer edge surface of said lower pad being formed with a taper.

-6. An adapter according to claim 5 in which the uppermost notch is farthest from said inner surface of said upper pad and in which said taper is downwardlyinwardly inclined. r

References Cited in the file of this patent UNITED STATES PATENTS 1,909,601 Young et al May 16, 1933