US821401A - Insulator. - Google Patents

Description

PATENTED MAY 22, 1906.

I. CARTER. INSULATOR. APPLICATION FILED MAY23, 1905.

Ill/VE/VTQR Z01 Gaffer WITNESSES:

UNITED STATLEd PATENT OFFICE.

INSULATOR.

Specification of Letters Patent.

' :atenteo may 22, 1906.

Application filed May 23.1305. are to. 251,735.

To all whom it may concern:

Be it known that l, TAYLOR CARTER, a citizen of the United States, and a resident of separated by a slot 14.

Frankfort, in the county of Franklin and State of Kentucky, have invented a new and improved insulator, of which the following is a full, clear, and exact description.

My invention relates to insulators admitting of general use, but more particularly to insulators intended to hold wires used in telegraphy, telephony, and the like.

Reference is to be had to the accompanying drawings, forming a part of this-specification, in which similar characters of reference indicate corresponding parts in all the figures. Figure 1 is a vertical cross-section through one of my im roved' insulators. Fig. 2 is a fragmentary e eva'tion showing the to of the insulator viewed as from the right '0 Fig. 1'. Fig. 3 is av fragmentary plan view of the insulator and wire supported thereby, a portion of the insulator being broken away; and Fig. i is a perspective view of the key used for retaining the wire in place relatively to the in-l sulator. i

. The body of the insulator is shown at 5 and is threaded internally at 6 in the usual or any desired manner, so as to be mounted upon a supporting-pin. Integral with the body 5 is a head 7, provided with a substantially ES- shaped slot 8, sunken directly into the head 7 from the top thereof, as indicated. A horizontal slot 9 asses. centrally through the the head 7 an is neatly fitted by a metallic key 10, provided at one of its ends with tongues 11, separated by a slot 12, and at the other (fits ends with tongues 13, similarly The wire is shown at 15. The ends of the slot 8 are slightly deeper than other parts thereof at the points designated 8 8 in Fig. 1.

The operation of my device is as follows: in order to mount the wire 15 in position, it is raised to the top of the insulator, then bent slightly and forced into the slot 8 until it reaches the bottom thereof. The curvature of the slot is the same from top to bottom, and consequently the wire retains the shape which it assumes when first forced into the top of the slot. The wire being now against the bottom of the slot, the key 10 is forced into the slot 9 immediately er the wire, so as to bind the Wire against the bottom of the slot. The tongues Hand 13 are now bent downward as indicated in Fig. 1, and effect ively prevent upward movement of the wire.

If desired, the tongues 11 may be bent downward before the key 10 is inserted, as indicated in Fig. 4. With an insulator equipped as above described it is impossible to dislodge the wire 15, except by straightening the tongues in the key and then withdrawing the key from the slot 9. The ends 8 8 of the slot 8 are slightly lower than the center, as l find that this conformity facilitates assing the wire 15 through the said slot and a so prevents collectionof water in the slot.

It will be noted that when the wire is in position it has the same conformity as the sub stantially Sis-shaped slot and is therefore not readily pushed endwise from the insulator.

The-key 10 being com arativelywide, no part of the wire can pass t e key. v

The device is of peculiar service to linemen,

as it admits of quick and permanent repairs at a small expense.

Having thus described my invention, 'I claim as new and desire to secure by Letters Patent 1. An insulator comprising amember provided with a sinuous slot for receiving a line-wire, the walls of the slot being parallel and formed upon a series of regular alternately-reversed curves. merging into each other, whereby abrupt curves in the line wire are avoided, and provided with a horizontally-disposed slot substantially parallel to the sinuous slot, and at right angles to the walls thereof, and a key having means for engaging the line-wire and detachably mounted within such second slot. 2. An insulator comprising a member rovided with-a sinuous slot for receiving a "line'- wire, the walls of the slot being parallel and formed upon a series of re lar alternatelyreversed curvesmerging lnto each other, whereby abrupt curves in the line-wire are avoided, and provided with a horizontallydisposed slot substantially arallel to the sinuous slot, and at right ang es to the walls thereof, and a key detachably mounted with in such second slot, the ends of the key being recessed to form tongues adapted to be bent in order to retain the ke in position.

3. In an insulator, t e combination of a body member provided with asl'otfor engaging the Wire, andzmother slot for engaginn' the name .to this specification in the presence oi? key, a key removably engaging ssid' iast- 1 two subscribing Witnesses. named slot, the of the Key bein re-v m T i r cessed to form tcngues adapted to be be et on each side of the 1ine-wire in order to hold said key in posit-ion.

In testimom whereof 1 have signed my Witnesses:

R. K. NICQLURE, Jr., F. C. @ANNON.

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