US928010A - Cross-arm fitting and insulator-support. - Google Patents

Description

S. B.W

CROSS FITTING AND INSULATOR SUPPORT. v

LIOATION IILED JAN. 11, 1909.

Fate

928,01 nted July 13, 1909.;

. .YydaesffE. wa

SYLVES'IER B. WAY, OF ST. LOUIS, MISSOURI.

CROSS-ARM FITTING AND INSULATOR-SUPPORT.

Specification of Letters Patent.

Application filed January 11, 1909.

Patented July 13,1909.

Serial No. 471,550.

'forming a part hereof.

My invention relates to a fitting adapted to be located on the cross arms of overhead wrre-supporting poles, and the like, and said fitting )eing especially designed to su port insulators which carry the wires or cab es.

The object of my invention is to provide a simple, inexpensive iitting which is so con structed as to readily attach to or remove from a cross arm, and which fitting clampsthe cross arm on all four sides, thereby providing a very rigid support when properly positioned on the cross arm. and supporting the insulator in a iii'm and 'lixed position.

In the present type of insulator supports it is necessary to bore holes in the cross arm into which the supporting pins are driven, and such procedure tends to s ilit the cross arm and to open cracks into which rain and snow enter, thereby hastening the dcstruction of the cross arm by decayfand consequently increasing the cost of maintaining the overhead wire system in which this form 01 construction is carried out. W'licre wooden pins are used for insulator supports it. is necessary to bore large holes in the cross arms for the reception of such wooden pins, which construction materially weakens the cross arms.

My improved litting or insulator support. is designed to overeome the objectionable l'eatures above noted, and said fitting being so constructed as to clamp the cross arm on all four sides, thereby decreasing the possibility of splitting or checking-of the cross arm as a. result of exposure to the sun and rain, consequently greatly increasing the life of the cross arm and thereby materiall}- decreasing the cost ol maintaining the system.

To the above purposes, my invention consits in certain novel features ol' construction and arrangenwnt of pa its which will be hereinal'tcr more fully set forth, pointed out in the-claims, and illustrated in the accompanying drawings, in which:

Figure 1 isa cross section ol' a cross arm with one of my improved fittings applied thereto, and a portion of said fitting being shown in section: Fig. 2 is a horizontal section taken on the line 2-)? of Fig; 1; and Fig. 3 is an elevation, partly in section, ol the form ol fitting used for attaching one end of a guy wire, or the like. 7

. Referring by numerals to the accompanying drawings: 1 designates a vertically disposed pin, the upper end of which is threaded, as designated by 2, when the fitting is used for supporting insulators, and said threaded upper end is provided with three or more vertically disposed slots, such as 3, in order to provide for the dill'ercnce of expansion hetwecn. the metal of the pin and the insulator material, such as glass or porcelain, the insulator being screw seated on the threaded upper-end of said )lll.

Formed integra with the lower end of the pin 1 is a plate 4, which occupies a transverse position on top oi the cross arm A, and formed integral with one end of this plate 4 is a lug 5, which occupies a plane at an angle of relative to a vertical line, and said lug being provided with a non-circular recess 6, adapted to receive the head of a bolt. This lug is also perlorated in order to accommodate a draw-bolt, or like fastening device.

F ormedintegral with the plate 4 at the base 01' the pin 1 are laterally projecting lugs 7, the outer ends of which are provided with notches 8, which receive ails, screws, or like fastening devices which may' be used as an auxiliary means of l'astening the'piu tothe cross arm. Formed integral with the under side of the plate 4 is a series 01 pointed lugs 9, which when the plate is clamped on the cross arm engage therein and tend to hold said plate in a firm and substantial manner. .Formcd integral with the plate 4 opposite the end carrj 'ing thelug 5 is a. vertically disposed plate 10, the lower end of which is provided with an integral lug 11 which occupies a plane at an angle of approximately 45 rela tive to a vertical line, and said lug is perforated and provided with a non-circular recess 12, adapted to receive the head of a bolt.

The plates 4 and 10 are reinforced by strengthening ribs 13, lormcd integral with the outer faces of sald plates.

- The opposite member of the fitting com prises a verticaltv disposed plate 14 adapted to engage against the side of the cross arm A opposite the plate 10, and the upper end of said plate 14- is provided with a lug 15 occu lltl Formed integral with the lower end of the.

plate 14 is a horizontally disposed plate 18, which occupies a transverse position beneath the cross arm, and the end of said plate 18 is provided with an integral lug 19 which occuiies a plane parallel with the plane occupied by the lug 11, and said lug 19 is perforated or slotted in order to receive the end of a drawbolt 20, the head of which occupies the non-circular recess 12, and the threaded end of said bolt receives a nut 21. Formed integral with the inner faces of the plates 14 and 18 are pointed lugs 22, which when the fitting is applied to the cross arm engage in said cross arm, and formed integral with the outer faces of said plates 14 and 18 are strengthening ribs 23.

In the form of fitting shown in Fig. 3, the upper end of'the pin 1 is formed into a ring 24, which provides means for attaching one end of a guy wire, or the like, and the lugs 15 and 19 are shown as being provided with slots 25, which construction permits rapid removal or assembling of the fitting, as where such a construction is employed it is not necessary to entirely remove the nuts from the draw- bolts 16 and 20.

The operation incident to the positioning of afitting of my improved construction is obvious, it only being necessary to locate the two parts of the fitting on opposite sides 01' the cross arm, insert the draw bolts 16 and 20 and apply the nuts to the ends 01' said draw bolts, and as said draw-bolts are tightened the two parts of the fitting are tightly clamped upon the cross arm' and the pointed lugs 9 and 22 engage in said cross arm to rigidly maintain said fitting against lateral movement.

It will be noted that my improved fitting is separable on a diagonal line, and for this reason the fitting firmly grips and clamps the cross arm from all four directions when the draw-bolts are tightened, and this construction also provides adjustability for various sizes of cross arms, or l'or standard cross arms which vary in cross section, due to inaccurate milling, shrinkage, or for other causes.

In the presentoverhead wire systems cross arms very frequently split, as a result of the action of the weather, or by reason of the strain of the wires pulling upon the insulator pins and as a result these cross arms have to be renewed at considerable expense, but where a fitting of my improved construction is employed the two parts of a split cross arm may be firmly clamped together, thereby ermitting the retention of a cross arm w rich would otherwise be tlelective and would have to be renewed.

In Fi 1, I have shown the cross arm split vertical y and it will be readily understood how the two parts 01' the clamp rigidly maintain'the two parts of the cross arm together when the draw-bolts in the ends of the clamp are tightened. It will be readily understood that the clamp or fixture may be utilized on any rectangular wire supporting arm or rail as well as upon the cross arm of a pole.

I claim:

1. A cross arm fitting, comprising two members separable on. a diagonal line and adapted to embrace a cross arm, and means whereby the ends 01' the members are con nected.

2. A. cross arm fitting, comprising two members separable on a diagonal line and adapted to embrace a cross arm, and adjustable means for uniting the ends of said mem- )ers.

3. A cross arm fitting, comprising a pair of L-sl1aped members adapted to embrace a cross arm, and adjustable means for connecting the ends of said members and clamping the same upon the cross arm.

4. A cross arm fitting, comprising a pair of L-shaped members adapted to embrace a cross arm, adjustable means for connecting the ends of said members and clamping the same upon the cross arm, and a pin carried;

by one of said members.

5. A cross arm fitting, comprising a pair of members separable on a dlagon a]. line and adapted to embrace a cross arm, there being openings formed in the adjacent ends of said members, and means passing through said openings for connecting the ends of the mem bers and clamping the same on the cross arm.

6. A cross arm fitting, comprising two sections separable on a diagonal line and adapted to embrace a cross arm,'means integral with said members for engaging in the cross arm when clamped thereon, and adjustable means connecting the ends of said members.

7. A cross arm fitting, comprising two sections separable on a diagonal line and adapted to embrace a cross arm, means integral with said members for engaging in the cross arm when clamped thereon, .adjustable means connecting the ends of said members, and an arm integral with one oi said members.

8. A cross arm fitting comprising two members separable on a diagonal line and adapted to embrace a cross arm, adjustable means for uniting the ends of said members, a pin carried by one of said members, the upper end of which is provided with a plurality of vertical slots.

9. A cross arm fitting, comprising two members separable on a diagonal line and i In testimony whereof, I have signed my adapted to embrace a cross arm, adjustable name to this specification, in presence of two means (or uniting the ends 0f said members, subscribing Witnesses.

a pin carried by one of said members, the up- SYLVESTER B. WAY. v per end of which is exteriorly screw threaded Witnesses: and provided w th a plurality of Vertically M. P. SMITH, disposed slots. E. E. LONGAN.

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