US 2502815 A
Description (OCR text may contain errors)
April 4, 1950 B. A. BEVEBE POLE TOP GIN AND AUXILIARY CROSSARM 2 Sheets-Sheet 1 Filed Aug. 5, 1948 Bliss A Beebe INVENTOR.
April 4, I950 B. A. BEEBE 2,502,815
POLE TOP GIN AND AUXILIARY CROSSARM Filed Aug. 3, 1948 2 Sheets-Sheet 2 Bliss A. Beebe INVENTOR.
BY arm W 5% Patented Apr. 4, 1950 UNITED STATES PATENT OFFICE 9 Claims.
This invention relates to a device adapted for use in connection with the construction, repair and maintenance of various types of electrical conductors, carried by poles, and has for its pri mary object to lift existing lines on a pole out of the way of workmen without interrupting the flow of electrical current carried by the pole lines.
Another important object of this invention is to hoist materials and equipment to the top of a pole in the repair and maintenance of pole lines, to hoist repair parts or the like to the top of a pole carrying supplemental construction on existing lines.
Another important object of this invention is to provide an attachment for a pole, which is easily and conveniently attached to the pole and is sturdy and dependable in construction.
Paralleling these objects, it is the aim of this invention to render more convenient and less hazardous the task of linemen in repairing electrical lines and replacing transformers or other electrical equipment into place on the top of the poles.
A meritorious feature of this invention resides in the provision of a wooden gin pole, easily and conveniently mounted on top of an existing permanent pole and having means pivotally mounted thereon, whereby, in association with a block and tackle, or any other hoisting device, materials and equipment can be easily hoisted to the top of the pole.
Another meritorious feature of this invention resides in the provis on of an auxiliary cross arm assembly carr ed by the gin pole and adapted to lift the electrical wires on the top of the pole out of the way of the workmen without interrupting the flow of electrical current.
Another meri orious feature of this invention resides in the provision of an attaching plate for mounting the gin pole on the top of the permanent pole, the same being easily secured to the permanent pole and adapted for attachment to any type of pole, regardless of the cross sectional shape.
These and ancillary objects and other meritorious features are attained by this invention, a preferred embodiment of which is set forth in the following description and illustrated in the accompanying drawings, wherein:
Figure 1 is a front elevational view of this invention, showing the same in attachment with a permanent pole;
Figure 2 is a cross sectional view taken substantially on the plane of line 22 looking in the direction of the arrows, in Figure 1;
Figure 3 is an enlarged fragmentary view of the auxiliary arm lifting link, which enables the auxiliary arms to be lifted from a center point and from a point adjacent the opposite ends;
Figure 4 is a view in perspective of a hook element carried by an arm at the top of the gin pole and pivotally mounted for placement on either side of the pole;
Figure 5 is a top plan view of this invention;
Figure 6 is a vertical sectional view taken on the line 66 of Figure 1;
Figure 7 is a cross sectional View taken on line l-J, looking in the direction of the arrows and illustrating the clamping means provided for attaching the gin pole to the topof a permanent pole;
Figure 8 is a transverse sectional view on the line 8-8 of Figure 1, and;
Figure 9 is a cross sectional view taken substantially on line 99 of Figure 1.
Referring now more particularly to the drawings, wherein similar characters of reference designate corresponding parts throughout, this invention generally designated by the character reference lll'comprises a gin pole and component structure l2, adapted to carry an auxiliary cross arm assembly M, the gin pole l8 being mounted on a permanent line pole.
The gin pole, conventionally employed, is secured on the sides of the permanent pole and is made of steel or iron, consequently, being hazardous in use due to the presence of high voltage electric current. The gin pole 18, of this invention, is made of wood and is resistant to the passage of electric current. Further, the gin pole can be easily mounted on any permanent pole, having two inches or more above the top of the top cross arm The gin pole can be safely hoisted between all types of electrical lines and because of its weight and simplicity is easily attached to the permanent pole.
In carrying out this invention, a metal cap it, which serves as a stand plate for the gin pole H5 is fastened to the top of the permanent pole 20. The cap I6 is clamped directly to the top of the stationary pole and includes a pair of complementary arcuate sections 22 and 24, in Figure '7. The arcuate clamping sections 22 and. 2% have their inner surfaces vertically corrugated to grip and securely hold on the pole. A pair of apertured cars 25 and 28 are laterally offset from the ends of the clamping section 22 and similarly, a pair of apertured cars 30 and 32 extend from the clamping section 23. A bolt assembly 34 is adapted to be received in the registerable apertures in the ears to secure the sections on the cap. The bolt assembly 34 comprises a headed bolt 36 and a complementary nut 38. A washer 40 is welded on the shank of the bolt adjacent the head thereof and spaced from the head by the ears 26 and 2B. In order to enable the bolt assembly to be conveniently and swiftly secured, a locking device, such as a stud or lug 42, extends integrally from the clamp adjacent the end thereof. The lug 42 abuts against the head of the bolt and retains the same against rotation. Thus, it is only necessary to tighten or loosen the nut, using only one wrench, no wrench being used to hold the head of the bolt, as the lug sets square with the head of the bolt for retaining the same against rotation.
A cylindrical supporting member 44 extends vertically from the center of the stand plate 46 on the cap I6 and is adapted to receive one end of the gin pole I8, the same being securely retained therein by means of a conventional bolt unit 48, as seen in Figure 2. A pair of opposed rectangular slots 50 and 52 are formed in the stand plate to receive the bolts 54 and B which have their heads welded to the upper edge of the clamps 22 and 24 respectively and function to tighten the stand plate on the sections and correspondingly an annular bracket 58 on the top of the pole 20.
The receiving bracket 58 is welded to the underside of the stand plate 46 and is preferably V-shaped for receiving the fared terminal of the permanent pole. Welded. to the upper surface of the stand plate and extending vertically therefrom in opposed fashion are a pair of U-shaped bearin brackets 60 and B2. Seated in the brackets and retained therein by means of rivets B4 or other suitable securing means are a pair of brace bars or struts 6B and 68, which serve to rigidify the gin pole I8 and to position the same in vertical placement. The upper ends of the brace bars 60 and 68 are beveled as at I0 to snugly engage the medial portion of the gin pole. A collar I2 is secured around the beveled ends of the brace bar and disposed about the gin pole I8, the same being retained in place by a bolt as sembly I4 transversely inserted through the collar, the brace bars and the gin pole.
A sleeve I0 is secured to the top of the gin pole by means of a bolt and nut I8, the upper portion of the sleeve extending'above the top of the pole. An arm 80 is pivotally mounted in the sleeve above the gin pole and pivotally carries a shackle 82. The shackle 82 preferably includes a substantially circular body portion, having complementary extended arms 84 and 86 which are suitably apertured to receive a pivot pin 80. A conventional block and tackle unit 90 or other suitable hoisting devices depends from the shackle 82 by means of a hook 92 inserted therein. The block and tackle unit 90 is adapted to carry the auxiliary cross arm unit I4, as seen in Figure 1. However, the auxiliary cross arm unit is primarily intended to be used for removing electrical or other lines out of the way of the workmen at or near the top of the pole. The top pole gin however can be used, without the auxiliary cross arm. By means of the block and tackle 90, materials and equipment can be hoisted to the top of the pole in the repair and maintenance of pole lines and, similarly, transformers or other electrical equipment can be hoisted into place. It is to be noted that the shackle 82 can be positioned on either side of the pole, rendering the same more convenient for use in its hoisting function.
However, to lift the wires on the top of the pole from the permanent cross arm, the auxiliary cross arm unit I4 is suspended by the hook and tackle unit from the top of the gin pole. The auxiliary cross arm unit comprises an elongated arm 98, which is of a length approximating that of a permanent cross arm. A collar I00 is welded or otherwise secured to the central portion of the arm 98 and has attached thereto by welding or the like a strap I04. The strap I04 is welded at its closed end as at I06 to a link I08. The lateral portions of the link I08 are adapted to receive a pair of U-shaped straps H0 and I I2, the straps having their open ends riveted as at II4 to a pair of auxiliary bracing and raising arms H6 and H8. The arms H6 and H0 have similar U-shaped brackets I20 and I22 riveted to their opposite ends by means of which the arms are attached to a pair of hooks I24 and I26 located adjacent the opposed ends of the arm. A cable from the hoisting device 90 is secured to the upwardly extending eye of the link I08.
Suitably secured, as by welding or the like, upon the auxiliary cross arm are a plurality of collars I28, the same being secured by rivets I30 which transversely extend through the collar. An arcuate strap I32 is welded to the under side of the collar I 28 and is centrally apertured for receiving a hook I34 swivelly disposed therein by a peened end I36. Disposed on the cross arm adjacent the ends thereof are collars I38 to the under side of which are welded as at I40 substantially u-shaped straps I42. It is to be noted that a loop or eyelet I 44 is welded to the top of the collar I28. The purpose of the loop or eyelet I 44 on the top is that the same may be used to guide the auxiliary cross arm when it is in position so as to take care of any curve in the electrical line or lines or to take care of any unbalanced load on the auxiliary cross arms such as would be present when there are two electrical lines on one side of the cross arm and one on the other. Of course, the hooks I34 and I42 are adapted to receive the lines, which are lifted out of the way of the workmen through the medium of the hook and tackle assembly 90.
Thus, it can be seen that there is provided a convenient and dependable pole and auxiliary cross arm structure, which will considerably lessen the task of workmen and repairmen and line men in replacing and repairing lines on poles.
However, since many other purposes and objects of this invention will become apparent to those skilled in the art, on a perusal of the foregoing description, in view of the accompanying drawings, it is to be understood that certain changes may be efiected thereon as coming within the spirit of the invention and the scope of the appended claims.
Having described the claimed as new is:
1. An auxiliary suspension device for conductor lines comprising a sectional cap clamped on the top of a permanent pole, a plate horizontally mounted and adjustably disposed on the upper edges of the cap, a gin pole, means for mounting the gin pole on the plate, a supporting shackle pivotally carried by said gin pole, and a hoisting device depending from said shackle.
2. An auxiliary suspension device for conductor lines comprising a gin pole a cap clamped on the invention, what is top of a permanent pole, a plate adjustably secured to the cap for supporting the gin pole in an upright position, a supporting shackle pivotally carried by said gin pole, a hoisting device pivotally carried by said gin pole, a hoisting device depending from said shackle, a link secured to said hoisting device, a strap depending from said link, a cross arm medially supported by said strap, a pair of bracing members secured to said link and attached to the cross arm adjacent the ends thereof, means depending from said cross arm for engaging and supporting the lines and means for guiding the cross arm in position.
4. An auxiliary suspension device for conductor lines comprising a gin pole mounted on the top of a permanent pole, a supporting shackle pivotally carried by said gin pole, a hoisting device depending from said shackle, a link secured to said hoisting device, a strap depending from said link, a cross arm medially supported by said strap, collars secured on said cross arm, hooks swivelly depending from said collars for supporting the conductor lines, a pair of bracing and raising members secured to said link and attached to the cross arm adjacent the ends thereof, said collars having means extending from the top portions thereof for engaging the ends of the bracing and raising members.
5. In combination with a permanent pole and permanent cross arm for conductor lines, an auxiliary suspension device for raising and supporting the lines from the permanent cross arm comprising a sectional cap clamped on the pole adjacent the upper end, attaching members vertically carried by the cap, a supporting plate adjustably mounted on the attaching members, a gin pole mounted in a vertical position on the plate, a shackle pivotally carried by the gin pole, a hoisting device depending from said shackle, a cross arm suspended from said hoisting device, swivelly mounted hooks depending from said cross arm for engaging the conductorlines.
6. In combination with a permanent pole and cross arm for conductor lines, a hoisting device, comprising a cap clamped on the top of the permanent pole, a supporting member mounted on said cap, a gin pole vertically seated in said supporting member, means for bracing said gin pole in said vertical position, a collar secured on the top of the gin pole, a shackle pivotally carried by said collar and a block and tackle suspended from said hook for raising material to the cross arm.
7. In combination with a permanent pole and cross arm for conductor lines, a device for raising and lowering material to the cross arm comprising a cap disposed on the top of the pole,
means for clamping said cap on the pole, a tubular support extending from said cap, a gin pole seated in said support, bearing brackets extending from said cap, brace bars secured in said brackets and attached to the gin pole, a shackle pivotally carried by the top of the gin pole and a hoisting device suspended from said hook.
8. In combination with a permanent pole and cross arm for conductor lines, an auxiliary suspension device for raising and supporting the lines from the permanent cross arm comprising a cap clamped on the top end of the permanent pole, a gin pole seated on said cap, a shackle pivotally carried by the gin pole, a hoisting device depending from said shackle, a link secured to said hoisting device, a strap depending from said link, a cross arm medially supported by said strap, collars secured on said cross arm, hooks swivelly carried by said collars for engaging the conductor lines, eyelets secured on said collars and bracing bars connected between said link and said eyelets.
9. In combination with a permanent pole extending vertically from a horizontal support, a suspension and hoisting device including a member clamped on the upper end of the pole, upright supporting members integrally carried by the member, a plate adjustably mounted on said supporting members, an auxiliary pole, means formed on said plate for supporting said auxiliary pole in a vertical position, an arm pivotally carried by said auxiliary pole, and a hoisting means pivotally associated with said arm.
BLISS A. BEEBE.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 787,839 Ernst Apr. 18, 1905 965,528 Kline et al. July 26, 1910 1,015,236 Manross Jan. 16, 1912 1,547,915 Hirn July 28, 1925