US3266775A

US3266775A - Lineman's gin pole

Info

Publication number: US3266775A
Application number: US327415A
Authority: US
Inventors: Coe Edgar Homer
Original assignee: Individual
Current assignee: Individual
Priority date: 1963-12-02
Filing date: 1963-12-02
Publication date: 1966-08-16
Anticipated expiration: 1983-08-16

Description

Fig.

E. H. COE

LINEMAN'S GIN POLE 2 Sheets-Sheet 1 EDGAR H COE INVENTOR. B)

BUC/(HOR/V, BLORE, KLAROU/ST 8 SPAR/(MAN ATTORNEYS Aug. 16, 1966 E. H. (:01; 3,266,775

LINEMAN'S GIN POLE Filed Dec. 2, 1963 2 Sheets-Sheet 2 Fig.4

Fig. 5

E0645 H. COE

INVENTOR BUCKHORN, BLORE, KLAROU/STT 8 SPAR/(MAN ATTORNEYS United States Patent 3,266,775 LHNEMANS GIN POLE Edgar Homer (Joe, 1638 Pacific Blvd, Albany, Greg. Filed Dec. 2, 1963, Ser. No. 327,415 11 Claims. (Cl. 254-427) This invention relates to a linemans gin pole, and more particularly to a linemans combined gin pole and boom which may be attached selectively either to the top of a power pole or to the side of a power or communications pole.

To raise a power line or communications conductor and place it in a connector at the top of an insulator mounted on a cap or stool on the top of a power pole, a lineman climbs to the top of the power pole, stands on the stool with a belt passed around the insulator and then pulls the power line from the ground up to the insulator top and places it in the insulator top. The insulator is, of course, of dielectric material and usually is of ceramic so that its mechanical strength is limited and low as compared with metals. Consequently, the lineman has to be quite careful not to place too much strain on the insulator from the belt looped therearound. It is a dangerous operation because of the low mechanical strength of the insulators. It would be desirable to provide an aid to the lineman to provide a strong support at the top of the pole for the lineman to belt onto so that there would be no danger of breakage. It would also be desirable to provide an aid in assisting raising a power line to a convenient position for placing the power line in a connector in the end of an insulator mounted on the side of a power pole.

An object of the invention is to provide a linemans gin pole.

Another object of the invention is to provide a linemans combined gin pole and "boom which can be selectively mounted on the top of a power pole or on the side of a power pole.

A further object of the invention is to provide a linemans gin pole adapted to be interlocka'bly secured to a stool on the top of a power pole to provide a rugged belting support and also to provide an attachment for a pulley for raising a power line to an insulator on the top of a power pole.

Another object of the invention is to provide a linemans combined gin pole and boom having a pole portion together with a forked spade at one end for biting into the side of a power pole to secure the one end of the pole portion to the power pole together with jack means fastened at one end to the power pole and to the other end to the pole portion for pivoting the pole portion about the lower end thereof to swing the upper end of the pole portion upwardly and toward the power pole to lift a power conductor to a position over a receiving connector of an insulator carried by the power pole.

Yet another object of the invention is to provide a linemans combined gin pole and boom having a bracket portion adapted to slide onto a top plate of a stool on a power pole, and also having a spade portion adjacent the bracket portion adapted to be driven partially into a side of the power pole to mount the gin pole in an angular position relative to the power pole.

The invention provides a linemans gin pole having a base portion adapted to be detachably secured to a power pole and having a pole portion extending from the base portion. Preferably the base portion has a step bolt and a socket for the pole portion which preferably includes a pair of telescopic tubular members with means for locking the members in adjusted position relative to one another so that the length of the pole portion may be adjusted as desired. The base portion preferably is provided with a bracket member having a T-shaped guideway adapted to slide over a top plate of a stool fixed to a top of a power pole, together with a bolt adapted to lock the bracket member to the stool. The base portion also preferably has extending at right angles to the bracket member a space member having a pair of sharp tines adapted to bite into the side of the power pole to hold the pole portion in an upwardly inclined position relative to the power pole along with a chain looped around the power pole and secured to the spade and a pulling jack fastened at one end to the power pole and at the other end to the pole portion of the gin pole for pivoting the pole portion relative to the power pole about the tines to swing a conductor into position above an insulator support carried on the side of the power pole.

A complete understanding of the invention may be obtained from the following detailed description of a linemans gin pole forming a specific embodiment thereof, when read in conjunction with the appended drawings, in which:

FIG. 1 is a fragmentary side elevation view of a linemans gin pole forming one embodiment of the invention and mounted on a power pole;

FIG. 2 is a fragmentary, side elevation view taken along line 22 of FIG. 1;

FIG. 3 is a side elevation view taken along line 33 of FIG. 1;

FIG. 4 is a horizontal sectional view taken along line 44 of FIG. 1; and

FIG. 5 is a fragmentary side elevational view of the linemans gin pole of FIG. 1 on a power pole havinga side insulator.

Referring now in detail to the drawings, there is shown therein a linemans gin pole 10 adapted to be mounted either on a power pole 12 (FIG. 1) having an insulator 14 carried by a cap or stool 16, the gin pole serving as a tie post for a lineman belting himself thereto and as a support for a hoist 18 to hoist a conductor (not shown) upwardly from the ground and place it into a connector or support 20 mounted at the top of the insulator M. The gin pole also can be used as a boom when attached to the side of a power pole 22 (FIG. 5) in an inclined position for supporting a pulley (not shown) such as, for example, the pulley 18, to hoist a power line or conductor (not shown) up to the level of a side insulator 24 carried by the post 22, then pivoting the gin pole 10 to the broken line position shown in FIG. 5 to raise the conductor directly above connector or support 26 adapted to receive the conductor and have it secured thereto. While the

poles

12 and 22 shown are poles for power lines, the gin pole 10', of course, may be used with any other type of poles, such as, for example, telephone and telegraph poles.

The gin pole 10 includes a base 30 having a spade-like plate 32 and a transverse guide or bracket 34 connected together by reinforcing gussets 36. The plate 32 has holes 33 at its top for a detachable, flanged step bolt 35 held on the base by nut 37. The guide or bracket 34 has a T-shaped guideway 38 (FIG. 3) therein adapted to slide over a top plate 40 of the stool 16 which has integrally secured to the top plate 40 a pair of downwardly depending channels 42 secured by bolts 44 to slabbed portions 46 of the pole 12. The top end of the pole has beveled portions 48 to leave spaces or passages 50 between the upper ends of the channel 42 and the upper beveled portions 48 of the pole 12. A keeper bolt 52 is designed to pass through aligned holes 54 (FIG. 5) in the gussets 36 and have a nut 53 put thereon to lock the guide 34 on the top plate 40 to hold it against movement off the top plate 40. The spade-like plate 32, as best illustrated in FIG. 1, engages the channel 42 and with the bolt 52 and the guide 34 locks the base 30 of the gin pole to 3 the stool 16. Bolts 58 and nuts 60 secure the insulator 14 to the top plate 40 of the stool 16.

The gin pole 10, as best illustrated in FIG. 2, includes a short pipe section or socket 63 having a lower end thereof fitting into a slot 66 in the upper portion of the plate 32, and the socket 63 is welded or brazed to the plate 32 all along the slot and also is welded or brazed to the guide 34. As shown in FIG. 5, the socket receives and has detachably pinned thereto a pole 64 having a hole 66 therethrough for receiving a bolt 68 which is adapted to selectively enter one of holes 70 formed in an extension pole or post 72 to lock the

poles

64 and 72 together in any desired one of several position of the pole 72 relative to the pole 64, the tubular pole 72 being telescopically mounted in the upper end of pole 64. A nut 76 is adapted to be screwed onto the threaded end of the bolt 68. The pole 72 (FIG. 1) has at the upper end thereof a laterally extending bracket or eye member 80 to which the pulley 18 may be detachably secured. A holding chain 82 (FIGS. 1 and 2) is fixed at one end to an eye member 84 and is detachably connected to a bracket member 86 fixed to the plate 32, which has a locking notch 88 therein for receiving the chain 82. The chain 82 is detached from the bracket when the gin pole 10 is mounted on the stool 16 and used as a gin pole, as illustrated in FIGS. 1 to 4, the keeper bolt 52 securely locking the base 30 to the stool 16. The

poles

64 and 72 are positioned immediately to one side of the power pole 12 and provide an ideal strapping post for the line man to belt himself to while working on the top of the stool 16. The

poles

64 and 72 and other portions of the gin pole 10 are preferably composed of a strong metal such as, for example, steel, magnesium, aluminum or the like.

In order to hoist a power line or conductor to place it in the connector 26 carried by the insulator 24 (FIG. the pole 72 is removed from the pole 64 and the lineman jams widely spaced sharp tines or points 90 of the spade-like plate 32 into the wood of the power pole 22 below and to one side of the insulator 24. He then loops the chain 82 around the pole 22 and fastens it in the bracket slot 88 (FIG. 2) of the lug 86 to secure the pole in the positon shown in full lines in FIG. 5. The operator then loops one end of a cord or cable 94 through an eye 96 of the pole 64 spaced out near the free end of the pole 64, and secures the other end of the cable 94 to the power pole 22, as illustrated in FIG. 5 with a known jack 98 provided for shortening the portion of the cable 94 between the pole 22 and the pole 64 and having a handle 100. The lineman then secures a hoist, such as hoist v18, for example, to an eye 104 positioned at the outer end of the pole 64 and pulls up the conductor to be mounted on the insulator 24. When the conductor is substantially at the eye 104, the lineman then actuates the jack 100 to pull the gin pole 10 from its lower position as shown in full lines in FIG. 5, to its upper position as shown in broken lines in FIG. 5, in which latter position the eye 104 is raised substantially above the support 26 and raises the conductor to a position directly over the support 26. The pole 10 pivots about the points 90 of the spade-like plate 32 which are firmly embedded in the pole 22. The lineman then lowers the conductor into the connector 26 and secures the conductor thereto in this position. The spade-like plate 32 is provided with an accurate notch 34 (FIGS. 2 and 3) positioned at the bottom thereof between the points 90 to provide clearance for the pull 22 during such pivoting movement, and similarly the guide 34 is provided with a notch 112 (FIG. 4) providing clearance for the insulator 14 and also providing clearance for the power pole 22 to permit the gin pole 10 to be moved to form a small angle relative to the power pole 22. The weight of the conductor being lifted is transferred to the pole 64 in compression to tend to force the points 90 deeper into the power pole 22 so that the gin pole is held The above described gin pole 10 serves as an excellent hoisting mechanism when located either on top of a power pole or on the side of the pole. When located on the top of the pole, it provides a rugged, strong, strapping post for the lineman. The gin pole greatly eases the labor involved in hoisting the conductors from the ground to the positions for installation on the insulators. The gin pole is lightweight and easily at ached to and detached from the power poles, either at he sides thereof or to a stool, such as the stool 16.

It is to be understood that the above-described arrangements are simply illustrative of the application of the principles of the invention. Numerous other arrangements may be readily devised by those skilled in the art which will embody the principles of the invention and fall within the spirit and scope thereof.

What is claimed is:

1. In a linemans gin pole,

a first tubular pole member,

a second tubular pole member slidable in the first tubular pole member and projecting from one end of the first tubular pole member and having an eye connector at one end thereof,

means for locking the tubular pole members in selected positions relative to each other,

a bracket member secured to the other end of the first tubular pole member and having a guideway therein adapted to slide over a top plate of a stool member fixed to the top of a power pole to mount the tubular pole members in positions extending upwardly from the top plate,

and means for locking the bracket member to the top plate.

2. In a linemans combined gin pole and boom,

a forked spade having a pair of spaced tines adapted to bite into a power pole at laterally spaced points on the pole,

a pole member fastened at one end to the spade,

chain means attachable at the ends thereof to the spade at points spaced from the tines and'adapted to be looped around the power pole to hold the spade against movement away from the power pole and permit pivotal movement of the spade toward the power pole,

and pulling jack means secured at one end to the power pole and at the other end to the pole member for pivoting the pole member toward the power pole.

3. In a linemans combined gin pole and boom,

a pole member fastened at one end to the spade,

chain means attachable at the ends thereof to the spade at points spaced from the tines and adapted to be looped around the power pole to hold the spade against movement away from the power pole and permit pivotal movement of the spade toward the power pole,

pulling jack means secured at one end to the power pole and at the other end to the pole member for pivoting the pole member toward the power pole,

a bracket member secured to and projecting transversely from the spade and having a T-shaped guideway extending transversely from the spade adapted to slide over a top plate of a stool fixed to the top of the power pole,

and means for locking the bracket member to the stool.

4. In a linemans combined gin pole and boom,

a pole member fastened at one end to the spade,

chain means attachable at the end thereof to the spade at points spaced from the tines and adapted to be looped around the power pole to hold the spade t5 of a power pole and having a vertical portion at the other end of the guideway and extending therebelow for engaging a vertical side member of the saddle,

against movement away from the power pole, 5 the base member also being provided with a fastening and connector means secured to and projecting transportion,

versely from the spade and attachable to a stool fixed fastening means adapted to releasably interlock with to the top of the power pole. the fastening portion of the base member and with 5. In a linemans combined gin pole and boom, the saddle when the base member is fully :on said a forked spade having a pair of spaced tines adapted end portion of the top plate of the saddle to lock to bite into a power pole at laterally spaced points the base member to the plate of the saddle, on the pole, and a gin pole member carried by the base in a posia pole member fastened at one end to the spade, tion projecting upwardly therefrom. chain means attachable at the ends thereof to the 10. The linemans gin pole of claim 9 wherein the base spade at points spaced from the tines and adapted member includes gussets connecting the horizontal guide to be looped around the power pole to hold the spade against movement away from the power pole,

a keeper bolt,

and a bracket member secured to and projecting transversely from the spade and having a T-shaped guideway extending transversely from the spade adapted to slide over a top plate of a saddle fixed to the top of the power pole and also having gussets provided with aligned holes for receiving the keeper bolt.

6. In a linemans gin pole,

a pole member,

a base member secured to and projecting transversely from the pole member and having a guideway exportion and the vertical portion,

the gussets having aligned holes defining the fastening portion,

the fastening means comprising bolt means adapted to extend through the holes in the gussets and aligned holes in the vertical side member of the saddle.

11. The linemans gin pole of claim 9 wherein the guideway is T-shaped in transverse cross section.

References Cited by the Examiner UNITED STATES PATENTS tending transversely from the pole member adapted 1 gichael et "iii g; to slide over one end of a top plate of a saddle fixed 1685445 9/1928 g 43 161 to the top of the power pole and also having in- 2 tedocking portions, 1,795,548 3/ 1931 Fazio 2i4l27 and releasable keeper means adapted to interlock gruuh'flrdt g with the interlocking portions and the saddle to de- 2309769 2/1943 d A tacha-bly lock the base member to the saddle. 4/1950 1J9 '7. The linemans gin pole of claim 6 wherein the 2617628 11/1952 i e upper portion of the bracket member has a clearance por- 2639381 5/1953 248 221 tion adapted to permit a base of an electrical device sup- 2966324 12/1960 H Pmpson at a 248 221 ported by the pole member to be placed on the top of the 40 emzen igdil: sianddeilelgnment with the power pole and secured FOREIGN PATENTS 8. The linemans gin pole of claim 6 wherein the 467,051 10/1928 yguideway is T-shaped in transverse cross section.

9. In a linemans gin pole, a base member having a horizontal guide portion hav- WILLIAM FELDMAN, Primary Examiner.

MILTON s. MEHR, OTHELL M. SIMPSON,

ing a guideway open at one end for sliding over one end of a top plate of a saddle fixed to the top Examiners.

Claims

2. IN A LINEMAN''S COMBINED GIN POLE AND BOOM, A FORKED SPADE HAVING A PAIR OF SPACED TINES ADAPTED TO BITE INTO A POWER POLE AT LATERALLY SPACED POINTS ON THE POLE, A POLE MEMBER FASTENED AT ONE END TO THE SPADE, CHAIN MEANS ATTACHABLE AT THE ENDS THEREOF TO THE SPADE AT POINTS SPACED FROM THE TINES AND ADAPTED TO BE LOOPED AROUND THE POWER POLE TO HOLD THE SPADE AGAINST MOVEMENT AWAY FROM THE POWER POLE AND PERMIT PIVOTAL MOVEMENT OF THE SPADE TOWARD THE POWER POLE, AND PULLING JACK MEANS SECURED AT ONE END TO THE POWER POLE AND AT THE OTHER END TO THE POLE MEMBER FOR PIVOTING THE POLE MEMBER TOWARD THE POWER POLE.