US489097A - Trolley-wire support - Google Patents

Description

(No Model.)

G. H. SCRANTON 8v L. SPILLMAN.

TROLLEY WIRE SUPPORT,

No. 489,097. Patented Jan. s, 1893.

llll Inl-nm Y Pmi? 6MM GEORGE ll. SORANTON AND LORENZ SPILLMAN, OF COLUMBUS, OHIO.

metter-'wi RE su Peo RT.

SFECIFICATN forming part of Letters Patent No:-489,09?, dated January 3,- 1893.

l Application led May Z7. 1892. Serial No. 434.577. (Nokmodel.)

United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Trolley and Suspension Wire Connectionskof which the following is a speclication.

Our invention relates to the improvement of suspension and trolley wire connections for electric railways and the objects of our invention are, to provide a new and improved device of this class of superior construction and 'arrangement of parts; to provide a lasting and reliable device of this kind which will prevent the breaking of the circuit or flashing which ordinarily occurs at the juncture Vof the suspension bar and trolleywire; to obviate the necessity of employing solder'A or anyother projection which will interfere with the proper workingof the trolley wheel or result in unequal wear of the latter, and to produce other improvements which will be more specifically pointed out hereinafter. These objects we Iaccomplish in the' manner illustrated in the accompanying drawings, in which,.

Figure l is a side elevation/ofour improved connection. Fig. 2 is an enlarged transverse section o n line a; of Fig. l. Fig. 3 is a central vertical section on line y y of Fig. l. Fig. Il is an enlarged transverse section on line e e of Fig. l. Fig. 5 is a view in elevation of the central portion of our connection showing a modification in the manner of 'holding the wire in connection with the connecting bar and Fig. G is a central verticalsection online s sof Fig. 5.

Similar letters refer to similar parts throughout the several views. y

o represents the vmetallic body of-V our irnproved connecting bar or plate which as shown in the drawings, is preferably of the flattened or elongated diamond forni. The lower edge of the bar a isas shown at b, rounded to forni the greater portion of the periphery of a wire body. This rounded lower portion has formed therewith, at each end two upwardly projecting `and inwardly curved oppositely located clamping ears c.

The upper side or edge of 'the bar a is as shown, provided throughout its length with a shallow groove c., From one side of the bar a, at or near the center of its length, extends upwardly an arm or bracket d, whicha short distance above the upper side 0E the bar a, is provided with a projecting shoulder portion d which overhangs the central portion of said bar.

Upon the upper end or head of the bracket d rests an insulator piece e, preferably of the cone frustum shape shown, which is surrounded by and supports a metallic ring e of the usual form. Upon the upper side of this ring e bears a dome-piece e2 of the insulating material which is provided as shown inin the drawings, with a central downwardly extending metallic screw e3, said screw passing through the insulating piece e, thence into and engaging with a central screw-hole in the head of the bracket d. This bracket d may be modilied in form to adapt it to other forms of trolley hangers. In connecting the trolley wire which is indicated at f, with the bar a, said bar is made to support said wire, the latter or that portion of the latter which is beneath and adjacent to the suspension wire being laid in the groove c' 'of the bar a, and passing between the ears c. This being done, said ears c are clamped inwardly over the trolley wire to form a irrn connection with said wire ai; the ends of the bar. As shown in the drawings, the thickness of the outer end portion of the bar a is so slight at the point where the trolley wire enters said bar, as to cause the rounded lower portion of the bar a to form approximately a continuation of the surface of the trolley Wire. In order to further secure the trolley wire in its position in the bar a, we provide in the central screw opening of the bracketd, a short pin or plug g the lower end of which is adapted to bear and rest upon the trolley wire f and the upper end of ,which is adapted to be pressed by the inner end of the screw es. The suspension wire which is indicated at;

usual manner as shown in Figs. 1 and 5 of the drawings. From the construction herein shown and described, it will be seen that a.

. new and improved means is provided for supk is connected with the ring plate e in the IOO porting the trolley wire at point-s beneath the suspension Wires, and that the means thus provided are such as to cause the under sidev of the bai' a to form approximately a continuation of the trolley wire from the points of connection ot' said wire and bar. This beingtrue, it will be seen that the trolley wheel running against the under side of the trolley wire in the usual manner, will run from said wire upon the lower rounded edge of said bar a and continue throughout the lengt-l1 of the latter until it again runs upon the wire.

By our device it will be seen that the trolley Wire is aorded a support at itsl junction with the suspension wire instead of a suspension as is ordinarily done and that one side ot the bracket arm or hanger is open to facilitate the lateral removal of the trolley wire when desired fort'ne purpose of taking up the slack in said wire.

Froin the construction herein shown au described, it is evident that our improved trolley wire supporting plate or bar may be produced at a reasonable cost of manufacture, and that the connection formed therewith will be durable and effective.-

As shown in Figs. and 6 of the drawings, we may substitute for the binding plug'or pin g, a horizontal key-pieee-g5 which as shown in said gures, is inserted through a slotted opening or bifurcation g6 in the upper or shoulder portion of the bracket (land which isheld against the wire f by means of the sci-ew Having now lfully described our invention, what weclaiin and desire to secure by Letters Patent is,

l. In a device for supportin g trolley wires from a suspension wire, the bar or plate ahaving a rounded lower side and a grooved upper side as described and a bracket arm rising from and over-.hanging said bar, substantially as and for the purpose specified.

2. In adevice for supporting trolley wires from a suspension Wire, the combination ot' "the metallic bar or plate having a rounded lower edge, ear terminationse ou the upper edge thereof, a groove in the upper side nf said bar a and a suspension wire bracket rising from one side of said baid, substantially as 1 specified.

3. In a device for supporting trolley wires, the combination of the plate cz, end ears c as described thereon a groove in the upper side of said bar, a suspension wire bracket rising from said bar and a vertically adjustable screw in said bracket, substantially as and for the purpose specified.

GEORGE H. SCRANTON. LORENZ SPILLMAN.

In presence ot C. G. SHEPHERD, H. B. BRADSHAW.

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