US1364028A - Insulated trolley-hanger - Google Patents

Description

G. H.- BOLUS.

INSULATED TROLLEY HANGER.

APPLICATION FILED in: 19, 19:9.

1 ,3645028, Patented Dec. 28, 1920.

814012 Mto'c UNITED STATES PATENT oFrlcs.

GLENN HENRY BOLUS, OF MANSFIELD, OHIO, ASSIGNOR TO THE OHIO BRASS COM- IPANY, OF MANSFIELD, OHIO, A CORPORATION OF NEW JERSEY.

INSULATED TROLLEY-HANGER.

Specification of Letters Patent.

Patented Dec. 28, 1920.

Application filed June 19, 1919. Serial No. 305,289.

To all whom it may concern Be it known that I, GLENN H. Bonus, a citizen of the United States, residing at Mansfield, in the county of Richland and State of Ohio, have invented certain new and useful Improvements in Insulated Trolley-Hangers, of which the following is a specification.

This invention relates to supports for trolley wires and to that class of supports better known as trolley wire hangers.

The object of my device is to provide a simple arrangement of parts whereby the trolley wire can be efliciently and securely suspended from its overhead support and insulated therefrom preferably by means of insulator material of a vitreous character and to also arrange the parts of my device so that the same can be installed easily and conveniently.

In the various figures I have shown in Figure 1 a top plan view of my device as installed upon a cross span wire. In Fig. 2 I have shown a side elevation as installed upon a span wire. In Fig. 3 I have shown a view of the parts looking down upon the same and in partial assembled relation to show better how the insulating member is inserted and disengaged from the hanger member. In Fig. 4: I have shown a sectional view on the line 4--4 of Fig. 1 which better shows the interlock of the hanger member and porcelain member and the supporting bolt.

The device comprises a supporting member 1 with a hinge member 2 secured together by means of a pin 3. Clamped between the members 1 and 2 is the insulating element 4 provided with a through bolt 5 which has a threaded portion at the lower end for attachment to the trolley ear, hanger, etc., and which is provided with an enlarged head of irregular contour and which rests within a cavity in the porcelain member 4, the shape of which conforms to that of the head of the bolt and therefore prevents the rotation of the bolt relatively to the insulating member. Positioned between the head of the bolt and the insulating member is a cushion 7 of lead, fiber, leather, mica, rubber, etc., by means of which the stress between the bolt and the porcelain and the porcelain and the ear or hanger which is screwed up against the lower face of the porcelain, is relieved thereby preventing the rupture of the insulating member 4 especially when porcelain or other vitreous material is use The member 9. completes the protection of the insulating element 4 from being injured by a flying trolley pole, as it is brought down sufiiciently with relation to the lower edge of the member 4 to receive the blow from the trolley pole. I have also found in hangers using a support member which only par tially surrounds the insulated member and which coacts with the span wire to support the hanger and the span wire contacts with the insulating member, that the span wire will in time injure the insulating member and especially when the insulating member is of a vitreous character, as the uneven surface of the span wire presses against the surface of the insulator at the point of contact and this pressure is often sufficient to set up strains in the insulator which make it very liable to injury. At the same time the use of the hinged support member distributes any strain between the supports 1 and 2 and the insulating member uniformly about the insulating member and automatically grips the insulat ing member in a degree proportional to the stress in the span wire.

Both the members 1 and 2 are provided with a beaded portion 8 and the insulating member 4 is provided with a groove 9 adapted to cooperate with the bead 8 there by preventing the displacement of the part when installed. To better support the part in place, shoulders 10 and 11 are formed on the insulating member and these ooact with adjacent faces on the hanger members 1 and 2, thereby tending to prevent side movement of the parts relatively to each other and to better distribute the strain between the parts.

In installing my device I first place the bolt 5 in position in the insulating member 4 and to the lower end of the bolt I secure the trolley clamp or ear which is done by rotating the bolt and insulating member together. I then place in position the hanger members 1 and 2 so that the bead 8 engages the groove 9 and then the assembled parts are secured to a span wire 12 by snapping the span wire into position within the lugs 13 secured to the arm 14. The lugs 13 are open on one side in the usual manner with hangers of this character. This causes the span wire to draw the members 1 and 2 into position and firmly hold them there.

I have found it desirable to locate in the lower face of the insulating member adj acent the bolt and against which the flange of the hanger or ear contacts, one or more radiating slots 15 which serve the purpose of permitting any moisture which might pass between the bolt and the porcelain and downward to the threads, to run off and also permits of a circulation of air to dry off any such moisture which might tend to rest therein and rust the threads. This radiating slot or slots also establishes a means for gripping one end of a lock washer which may be inserted between the insulating member and the ear or clamp.

I claim as my invention:

,1. An insulated hanger comprising an insulating member and a hinged support member to engage and encircle the insulating member and extending sufficiently low on the insulator member to protect'the same and having means to engage a supporting wire.

2. An insulated hanger comprising an insulating member and a hinged support member to engage and encircle the insulating member and inclosing the sides of the insulator to protect it, a circumferential groove in the insulating member co-acting with a circumferential projection on the support member.

3. An insulated hanger comprising an insulating member, a support member comprising a plurality of parts hinged together and engaging and encircling the insulating member and inclosing the sides of the insulating member to protect it and means on each member to prevent displacement of the parts when installed.

4. An insulated hanger for attachment to a supporting wire comprising an insulated member, a hinged support member engaging and encircling the insulating member and interposed between the supporting wire and the insulating member and engaging the supporting wire and automatically gripping the insulating member in proportion to the stress in the'su-pporting wire.

5. An insulated hanger for attachment to a supporting wire comprising an insulating member, a supporting member engaging and partly inclosing the insulated member, means on the supporting member to engage the supporting wire, hinged means secured to the supporting member between the insulating member and the supporting wire and engaging the supporting wire and held thereby in engagement with the insulating member by a pressure which varies with the stress in the supporting wire.

6. An insulating hanger for attachment to a supporting wire comprising an insulating member, a support member provided with means on either side of the insulating member to engage the supporting wire, a hinged member pivotally secured to the support member and interposed between the support wire and the insulating member and arranged to be engaged by the support wire at a point practically midway between the engaging means on the support member.

7. An insulating hanger for attachment to a supporting wire comprising an insulating member, a support member provided with means on either side of the insulating member to engage the supporting wire, means hinged to the support member and engaged by the supporting wire approximately midway between the engaging means on the support member for pressing the hinged means into engagement with the insulating member.

8. An insulating hanger for attachment to a supporting wire comprising an insulating member and a two-part hinged supporting member interposed between and adapted to engage the insulating member and encircle and support the same and provided with means at three points to engage a supporting wire, two points located on one part of the hinged support and the third point on the other part of the hinged support and the supporting member adapted to be held in engagement with the insulating member by the supporting wire.

In test mony whereof I afiix my signature.

GLENN HENRY BQLU-S.

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