US465665A - Hanging device for arc lamps - Google Patents

Description

(No Model.)

W. K. HOWARD, Jr.

HANGING DEVICE FORARO LAMPS. No. 165;666. Patented Dec. 22, 1891.

Winesew fnz/entor 8 m'eawv mum/way NITED STATES XVILLIAM KEY llOlVARD, JR, OF FREDERICKSBUR l, VIRGINIA.

HANGING DEVICE FOR ARC LAMPS.

SPECIFICATION forming part of Letters Patent No. 465,665, dated December 22, 1891. Application filed October 30, 1890. Serial No. 369,854. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM KEY HowAnn, J12, a citizen of the United States, residing at Fredericksburg, in the county of Spottsylva-- nia and State of Virginia, have invented certain new and useful Improvements in Hanging Devices for Are Lamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings.

The objects of my invention are, first, to provide a hanging device for a lamp, where by the lamp shall be firmly supportedwhen in place, the hoistingcord relieved of all strain, and the device well protected from the weather; second, to provide means for securing the lamp in or releasing it from its position by the use of the hoisting-cord only, and, thirdly, to furnish a hanger that maybe readily attached to any span-wire and means for readily adjusting it in position thereon at any desired point.

In the accompanying drawings, Figure 1 represents a side view of a hanger for a lamp, provided with my improvements, a part" of the frame or casing of the hanger being removed. Fig. 2 is a vertical section of the same, looking from the front. Fig. 3 is a vertical section of the clasp connected with the hoisting-cord. Fig. 4 represents a modification in the construction of the device. Fig. 5 illustrates the movement of the clasp.

Referring to the drawings, A designates the side parts of the frame or casing, between and in which is journaled a pulley C, the upper edges of the said sides being detachably connected with a cover or cap B, which is bent laterally, being intended to straddle the spanwire D, from which the hanger is suspended, as shown. Within the cap B, are journaled two grooved rollers E, which form the bearings of the hanger on the wire D, so that the hanger may be readily moved on said wire in either direction.

The side parts A are provided on their inner sides, near their lower edges, with rests or bearing-pieces a for a clasp F, which is attached to the hoisting-cord b. The said clasp is made substantially in the form shown, be-

ing hollow and somewhat tapering, so that when the cord is passed through it and a knot made on the end of the cord the latter may be secured by drawing the knot into the clasp. The said clasp is provided with two short arms or trunnions c, projecting from its sides, and has an eye 6 for connection with the lamp.

The clasp F is tapered at the top, some what flattened, and has rounded edges, (see Figs. 2 and 3,) and when in position in the.

casing A it must hang edgewise between the bearing pieces a, with the arms 0 extending therein, and when the lamp is raised by drawing the cord Z), in case the clasp is not in proper position to pass in between said bearings, it is automatically turned edgewise by contact of the upper part of the clasp with the bearing-pieces.

The bearings Ct are formed with notches or recesses cl, which receive the arm 0 of the clasp when the lamp is suspended in position, as seen in Fig. 1. The said bearings are also formed with several inclined edges, which serve to produce certain lateral movements of the clasp, as hereinafter stated.

Supposing the lamp to have been let down with the cord b, passing over the pulley O and extending downward between the bearings a, and it is desired to raise the lamp to its position, as seen in Fig. 1, the operator draws the cord 1), raising the clasp and lamp eonnected therewith, and the arms 0, being brought in contact with the lower inclined edges 9 of the bearings a, cause a movement of'the clasp and cord from the vertical line, the clasp moving along. the inclined edges until the arms 0 have passed the angle 2', formed by the recesses cl, when the clasp swings back again, the arms 0 entering the recesses, and the cord may then be slackened, leaving the lamp to be sustained by the arms 0 in the bearin gs a.

hen it is desired to remove the lamp from its position and let it down for any purpose, the cord 1) is drawn, raising thelamp and raising the clasp from the bearings a. As the clasp is raised the arms 0 bear against the inclined edges m, formed by the recesses in the bearing-pieces, which causes an outward movement of the clasp and cord from the vertical line until the said arms have passed from the recesses and above the bearingpieces, (see Fig. 5,) when the clasp swings back to the vertical line. The cord is then slackened and the lamp is allowed to descend by gravity, and as the clasp descends the arms 0 impinge against the outer inclined edges 11, and the clasp is thus pushed outward from the verticalline in an opposite direction and is allowed to pass down below the bearingpieces. Bythis construction the lamp may be raised to its position or lowered therefrom, as maybe desired, by means of the hoisting-cord only, and when the lamp is in position, with the clasp supported by the bearings a, the cord may be slackened, being relieved of all strain from the weight of the lamp. The hoisting-cord is usually passed forward over a sheave 19 near a supporting-pole of the wire D, and another cord 0 is connected with the casing of the hanger and passed rearward therefrom over a sheave q, this cord being provided with a weight 7, which should be of about ten pounds less weight than the lamp and hanger. The counter-weight r is of sufficient gravity to overcome the resistance of the casing B and the parts connected therewith when the cord In is released, but is not of sufficient weight to cause the lamp to be raised when the hanger is moved by drawing the said cord 12.

In many instances where wiresnotably trolley-wires of electric carswould prevent a lamp being lowered directly, it is necessary that the hanger be constructed to slide a short distance toward the 'pole before lowering it, and by this construction the lamp may be readily drawn toward the pole and then lowered. hen the cord 5 is drawn,the weight 7' rises until it strikes the sheave q, when it stops, and then by pulling slightly harder on the cord the lamp may be raised, taking the clasp from the bearings a, so that the lamp may be let down. The lamp being raised again to its position, the hanger will be drawn back on the wire again by the weight r. Should the hoisting-cord got broken or be cut by lightning, as often happens, the hanger and lamp may be drawn into the cross-arm pole without cutting leading wires, the lamp remaining sustained by the bearings a.

In Fig. 4 a modification is shown in the construction of the cap 13, the rollers E being across the wire at the rear of the dog and then drawn forward, catching the arm 20, releasing the wire, and moving forward the hanger and lamp. This construction of the cap is suitable for some purposes, and the sides A, being detachably secured by bolts 5, may be applied to either form of cap.

I claim 1. The combination, with the casing of a hanger having two connected side parts constructed to be placed and to move on aspanwire,ofapulleyjournaledin said casing,acord connected with a lamp and passed over said pulley and extended forward, and acord connected with said casing and extended rearward and passed over a sheave and provided with a counterweight, the said counter-weight being of sufficient gravity to overcome the resistance of the hanger and the parts connected with it when the cord connected with the lamp is released, but not of sufficient weight to cause the lamp to be raised when the hanger is moved by drawing the last-mentioned cord, substantially as set forth and described.

2. The combination, with the casing of a hanger provided with opposite inner bearingpieces and a pulley O, of a cord passed over said pulley, a clasp connected with said cord and provided with arms 0, constructed to connect with said bearings, and an eye for connection with a lamp, the said clasp being somewhat flattened, tapered at the top, and having rounded edges substantially as and for the purposes described.

In witness whereof I have subscribed my name in the presence of two witnesses.

\VILLIAM KEY IIOVARD, JR.

Witnesses:

JOHN WATSON MANGHAM, THOMAS JAMEs COLLIER.

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