US1516560A - Insulator tie - Google Patents

Description

Nov. 25, 1924- 1,516,560 C. ZIMMER INSULATOR TIE Filed Oct. 21 1920 Patented Nov. 25, 1924.

' UNITED STATES PATENT OFFICE.

CHARLES ZIMMER, OF EDINBORO', PENNSYLVANIA, ASSIGNOR F ONE-HALF TO LYNN C. DUNDON, OF EDINBORO, PENNSYLVANIA.

INSULATOR TIE.

Application fifled October 21, 1920. Serial No. 418,461.

conductor wire by means of a pole or in-' strument without approaching it closely enough to require the closing 0E of the current and the wire may be held away a sutficient distance during the replacin of the insulator to obviate the cutting 0 of the current. This is a matter of great consideration with power lines because the cutting 01f of the current results in great incon- Venience.

The invention is illustrated in the accompanying drawings as follows Fig. 1 shows an end elevation of an insulator with a conductorholder in place.

Fig. 2 a side elevation.

Fig. 3 a vertical cross section of the clamp.

Fig. 4 a side elevation of the insulator with the top of the insulator in section through the center of the clamp.

1 marks the supporting pin, 2 the insulator, 3 the usual conductor groove, 4 the tie groove which extends around the insulator in position to secure the conductor 5 in the groove 3. This arrangement of grooves is standard construction. A bottom clam ing plate 6 rests on the walls at the sides 0 the groove 3 near its center. An upper clamping plate 7 is opposed to the clamping plate 6, these clamping plates having the opposing grooves 8 in which the conductor 5 is placed. A post 9 extends through an opening 10 in the lower plate and has a lateral extension arranged in a groove 11 in the bottom of the plate 6, the end of the. extension being up-turned at 12 and extending into a groove or slot in the bottom of the plate. Securing arms 13 are fastened to the plate 6 by projections 14. These projections ordinarily are cast on the plate 6 which is of metal which permits of heading down on the arms 13. The outer ends of the arms 13 have the hooks 15 which extend under the bands 16. The band is preferably made up of two parts which are secured together at one end by a pin 17 and clamping screw 18 extends through the opposite end, thus providing means for drawing the band 16 into the groove 4. The hooks 15 are so varied in dis tance to the upper wall of the groove 4 that when the band 16 is drawn under the upper wall of the groove 4 the arms 13 are drawn downwardly so as to positively position the bottom plate 6 against the walls of the groove at the top of the insulator in position to receive the conductor 5. The post 9 extends through an opening 19 in the upper plate and thus forms a guide for the upper plate, the upper plate being slidingly mounted on the post. The post extending through the upper plate at the side the upper plate will remain in any position to which it is moved through its frictional en-- gagement of the walls of the opening 19 on the post. A cam lever 20 is pivotally mounted on the post 9 by means of a screw 21.. The cam on the lever is such that when the lever is swung downwardly the upper plate is forced into clamping relation with the lower plate and an inserted conductor is positively secured in place. On the other hand the cam lever is such that it can be reached from a distance by an implement so that the clamp may be released from a suflicient distance to permit of the operation being performed without closing off the current. After the upper clamping plate is released by the cam lever, the conductor may be removed and lifted to a position permitting of the changing of the insulators. The clamp may be left then with the clamplng plates open and the insulator replaced by an implement or hook from a distance and then the lever 20 is rocked so as to move the cam into clampin position.

What I claim as new 1s:

In an insulator tie, the combination of a clamp comprising a bottom plate; a top plate; arms secured to the bottom plate and having hooked ends adapted to extend from the clamp in a cross groove in an insulator; bands arranged to operate on the hooked ends and extend around an annular groove in an insulator; a post secured by the arms on the bottom plate and extending through the top plate; and a cam lever arranged on the post and operating on the top plate. 10

In testimony whereof I have hereunto set my hand.

CHARLES ZIMMER.

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