US805169A - Insulator and wire-clamp. - Google Patents

Description

PATENTED NOV. 21, 1905.

J. F. TAUBOLD. INSULATOR AND WIRE CLAMP.

APPLICATION FILED FEB.26.1904.

Inventor: %%v 3/ wiiiwsses WM 6% fm aw%m@ JOHN F. TAUBOLD, OF SCRANTON, PENNSYLVANIA.

INSULATOR AND WIRE-CLAMP.

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application filed February 26, 1904.. Serial No. 195,364.

To all whom, it may concern.-

Be it known that I, J OHN F. TAUBoLD, a citizen of the United States, residing at Scranton, in the county of Lac'kawanna and State of Pennsylvania, have invented certain new and useful Improvementsin Insulatorsand l/Vire-Glamps, of which the following is a specification.

This invention relates to improvements in insulators of the kind that are used to support, clamp, and at the same time insulate electrical conductor-wires from their supportingpoles or the cross-arms or parts thereof.

The objects of my improvement are, first, to provide a means for quickly and securely fastening or clamping the wire to its support, which in the present case we will call the cross-armg second, to provide at the same time a practically thorough insulation for wires of either low or high voltage circuits; third, to provide a convenient means to deadend a wire, and, fourth, to provide a suitable means to carry two wires upon one insulator in the manner required for making transpo sitions of telephone-wires. I attain these objects with the device illustrated in the accompanying drawings, in which Figure 1 is a vertical elevation of the device as it appears when in an open position ready to receive the wire, also showing the cross-arm in cross-section. Fig. 2 is a vertical section on line 2 2, Fig. 1, and shows the device in the other or closed position, clamping the wire, and the cross-arm in vertical longitudinal section. Fig. 3 is a horizontal section on line 3 3, Fig. 1. Fig. 4 is a horizontal section at line 4 4, Fig. 2. Fig. 5 is an elevation of part of the device modified for transposition or two wires. Fig. 6 is a section similar to Fig. 2, but shows a modification of the device adapted for high-voltage wires. Fig. 7 is a full plan view of Fig. 6.

Similar characters refer to similar parts throughout the several views.

A is the pin part or main metallic body of the device, the lower part B of which is in the form. of a rod threaded at its lower extremity C and adapted to pass through the cross-arm D with suitable insulation, consisting of insulating-sleeves E G, interposed between said pin and cross-arm D.

Clamping-jaw J has a downwardly-extending toothed bar K, which fits loosely into a slot L in the body A, so that the jaw J may be readily raised and lowered for clamping the wire by the action of the toothed-pinion part M of the lever N upon the teeth of bar K.

Lever N is fulcrumed upon pin 0, which pin is held rigidly in position by lugs P P, which are integral with the main part or body A of the device.

Body A has dovetailed into its upper surface a jaw-plate R,of insulating material, which is designed to be used in conjunction with a similar and similarly-fitted jaw-plate S, which is fitted to jaw J. Each of the jaw-plates R and S has in its adjacent surface a groove to keep the wire in its proper transverse position, and on one end of the jaw-plates, diametrically opposite each other, are lips c to limit as well as may be the end movement of the jaw-plates. The grooves in the jaw-plates are of different sizes, corresponding to the size of the wire to be supported, and the jawplates are removable, so that they may be changed to accommodate the various sizes of wire.

Fastened to pivot Q, at the top of body J is a cup-support U for a cam V. The cup U in this case is shaped like a gong and has an opening WV in its periphery so situated that when in a certain position the upper end of lever N can pass radially through this opening or notch. The cam V (shown most clearly in Fig. 4) is constructed so that when rotated about the pivot Q, in the direction indicated by the arrow o it will press against the turned-up end of the lever N, thus looking and tightly holding the wire in the manner to be hereinafter explained.

X is a removable anchor-block of insulat ing material which may be inserted into the dovetail slot (t in the side of body A for the purpose of dead-ending a wire, as shown in Fig. 3. This block has a hole 6 through it for the purpose of fastening the end if of the wire T, which may be secured in the manner shown. (Block X and its slot (0 have not been shown in Figs. 5 and 6, as they are intended to be used more particularly with the form shown in the other figures.)

If the parts of this insulator are in the relative positions shown in Figs. 2 and i and it is desired to withdraw the wire, it is necessary to turn or rotate cup U and cam V about pivot Q, in the opposite direction to the arrow o until the opening W coincides with the lever N and then move lever N outward through opening and downward. This rotation of lever N about its fulcrum 0 will cause its teeth M of the pinion-lever N to act upon the teeth on bar K, tending to raise bar K, and this bar being part of jaw J will cause the bar and jaw to rise simultaneously and by raising jaw-plate R will release the wire T. To insert a wire, reverse movement is made, so that the Wire is simply laid in the groove of the lower jaw-plate R, and then the upward movement of the lever N causes the wire to be clamped, as before described, and it is then only necessary to rotate the cup part U, containing cam V, forcibly in the direction of the arrow 11, and the wire is securely clamped. It may be plainly observed from Figs. 2 and ithat the action of cam V against lever N tends to tighten the jaw-plates it and S and clamp the wire. The slope of cam V is gradual enough, so that it cannot slip of? lever N, which lever will therefore remain securely locked until cam V is purposely rotated.

The modification shown in Fig. 5 is a substitute for the jaw-plates in Fig. 2, which will render the device useful as a transposition insulator. in Fig. 5 the dovetailed slot which contained jaw-plate R has simply been made deeper and of the form shown, and jawplate :5 is itself depressed into the top of body A far enough to allow a jaw-plate Y to be interposed between plate S and the jaw R in such a manner that one wire may be inserted between plates S and Y and the other wire between plates Y and R. Then the level-N is brought up and cam V rotated. Said wires will be pressed fast, as explained for-Fig. 2.

' It will be noticed, however, that jaw-plate 'Y has lips (Zmstead of, and correspondmg to thelips c, in jaw-plates R and S, which lips (Z are also to limit the end motion of jaw-plate Y.

Figs. 6 and 7 show the means employed to adapt my improvement for use with wires of exceedingly-high voltage, and the form here shown is similar to that shown in Fig. 2, except that in Fig. 6 there is a large disk-like cover Z supported on top of the device and the insulation E F G has been made of a form better adapted to wires carrying currents of very high voltage. The top of the upper insulation E has in this case been made larger, flared out and down to form a petti coat a, and at the same time covers an annular groovef. Upon the bottom of the lower insulation G has been formed in a somewhat similar manner the petticoat g, which preserves a similar annular space 7L between it and nut i. erably rubber, interposed between sleeves E and G foiuthe purpose of thoroughly completing the insulation through the cross-arm. The cover Z, as here shown, is of a form adapted to shed water. The water runs from the surface of the cover into the annular ridge y, around thls ridge or trough, and out through the openings .2, which in this case are shown F is an insulating-sleeve, prefon a line parallel to the length of the crossarm D.

From the above it will be understood that my clamping-insulator is secured to the crossarm of a pole or in other suitable position. A wire may be entered between the jaw-plates when the jaws are open, and by means of the rack and pinion-lever the jaws may be moved to clamping position. The pinion-lever is held in clan'iping position by the cam on the rotating cup U.

\Vhat I claim is 1. An insulator for telegraph-wires, consisting essentially of a fixed body, a movable jaw having a rack-bar extending alongside said body, a pinion-lever pivotally supported by the body and engaging said rack-bar, and insulating jaw-plates on the body and jaw.

2. A wire insulator and clamp having an in sulated body, a pinion-lever pivoted thereto, a jaw having a sliding rack engaging said pinion-lever, and a rotating cam carried by the jaw in position to lock the pinion-lever, all combined.

A wire-insulator having an insulated body and a clamping-jaw thereon, a pinionlever on the body engaging a rack on the jaw, and a notched cup carried by the jaw, having a cam in position to lock said pinion-lever, all combined.

i. Ina wire-clamp, the coi'nbination of a fixed body, an insulating jaw-plate thereon, a movable jaw having an insulating jaw-plate and means for opening, closing, and locking the same, and an insulating-plate between said jaw-plates, whereby a plurality of wires may be held.

5. In a wire-clamp, the combination of a fixed body having an insulating jawplate, and an insulating anchoring-block, a movable jaw having an insulating jaw-plate, and means for clamping the movable jaw on the body.

6. in a wire-clamp, the fixed body and a movable jaw thereon, each provided with insulating jaw-plates, means for clamping the jaw, and a removable insulatii'ig anchor-block on the body.

7. A telegraph insulator and clamp, consisting essentially of a body having an insulating jaw-plate, a movablejaw above said jawplate and also provided with an insulatii'ig jawplate, and a cover on the movable jaw in position to protect both insulating jaw-plates.

ln testimony whereof I aiiix my signature in presence of two witnesses.

J OH N F. TAU BOLD.

Witnesses:

G. Wns'r, E. M. S. PRIsx.

Images