US470766A - Arc-light hanger - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

O. A. PPLUGER.

ARC LIGHT HANGER.

470,766. Patented Mar. 15, 1892.

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O. A. PPLUGER. ARC LIGHT HANGER.

No. 470,766. Patented Mar. 15, 1892.

m: NDflRlS PETERS m, mom-mm: WASH -51 N n UNITED STATES PATENT OFFICE.

CHARLES A. PFLUGER, OF CHICAGO, ILLINOIS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE STANDARD ELECTRIC COMPANY, OF

ILLINOIS.

ARC-LIGHT HANGER.

SPECIFICATION forming part of Letters Patent No. 470,766, dated March 15, 1892.

Application filed May 15, 1891. Serial No. 892,820. (No model.)

T0 00% whom it may concern.-

Be it known that 1, CHARLES A. PFLUGER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Arc-Light Hangers, of which the following is a full, clear, and exact specification.

My invention relates to arc-light hangers, and has for its object to provide convenient and simple means, whereby the lamp may be suspended. It is illustrated in the accompanying drawings, wherein Figure 1 is a side view of the device. is a detail View of the spring-bars. Fig. 3 is a detail of the circuit-closers. Fig. 4 is a detail view of the hanger and cam. Fig. 5 is a detail of the ring connectors or terminals. Figs. 6, 7, 8, and 9 are detail views of a hook and ring in the several positions, showing the parts in their several relations.

Like parts are indicated by the same letters in all the figures.

A is the beam,to which is secured the support B, carrying the block C, on which is piv- Fig. 2

oted the hanger D, to which is secured the upper support E of the lamp proper. On the bottom part of the support or plate E are secured the rigid arms E E, to which are pivoted the cams E E provided at their upper ends each with the arm E adapted to be engaged by the end of the spring or rod E. Dependent from the plate E are the four rods F F, connected in pairs by the plates G G. Each rod is encircled by a spiral spring II, and above these springs and sliding upon them is the transverse plate J, carrying the central hanger K, to which the hooks L L are pivoted. To each hanger is secured one of the springs or curved rods E, which extend across the plate E to the hook of the cam associated with the other hanger.

M M are pins upon the suspending-hooks adapted to engage the upper portion of the pivoted cams.

N is a lug on the back of the hook adapted to engage the adjustable pin 0, which serves as a fulcrum for the hook when the lamp is being raised.

P P are the main conducting-wires which lead one to the circuit-closing connection P,

which is in the path of the part P on the hook-hanger, and the other to a like part P in the pat-l1 of a similar part upon the other hanger. From each of these contact-blocks leads a conductor P to the plate G on the opposite side of the lamp. A sleeve Q depends from the plate E, and within which slides the rod Q of the lamp Q Q is one terminal of the lamp,which is connected with the ring Q, supported above the top plate Q of the lamp. Q is the other terminal, in like manner connected with the ring Q These rings are supported upon the top plate in any desired manner-as, for example, by the overhanging pieces R R. The two rings are thus insulated, and one is connected with one terminal and the other with the other terminal of the lamp.

Referring to Fig. 3, the parts are more specifically shown. The plate J is shown provided with thiinbles J J, which slide upon the bars or rods F F. S is a rope which passes through the block C and over the pulley S and down through the sleeve and is secured at S to the top of the rod Q of the lamp. These several parts could be greatly changed and altered without departing from the spirit of my invention. I

The fundamental features of this invention are shown in a patent application now pending and heretofore made by me, and I claim here simply certain changes, elements, and additions not referred to in the former application.

The rod E has another office, which is to aid in making the two terminals engage or disengage their respective hooks together. If the lamp be raised so as to engage the hooks and one ring engages one hook and the other ring for some reason fails to engage its corresponding hook and the lamp be then lowered, the arm E, associated with the hook not engaged, will extend across and engage the lug on the cam of the hook which is engaged and hold it in the position shown in Fig. at. The operator now discovers that the lamp is engaged or suspended only on one side, and if the lamp be raised the ring which has engaged its supporting-hook will not be freed therefrom until the other ring has been 5 in Fig. 1.

25 terminal rings with the hooks.

raise and free the lamp and if the lamp beraisedand one of the hooks be lifted upward by lts spring, the other'being for some reason clogged or prevented from raising, the upward motion of the one which does move upwardly will cause its arm to engage the cam of the opposite hook and force it into the position shown in Fig. 4, so that the side or r terminal disengaged must re-engage its hook until both can be released together.

The use and operation of the device are as follows: The lamp in the position shown in Fig. 1 is, suspended by means of the rings upon the hangers, so that the lamp is in circuit, the main circuit being opened by the. OlICllli'rClOSGPS, consisting of the spring-actuated plates and bars, and the lampbeing placed in circuit by the engagement of its \Vhen the lamp is raised from a lowered position,, where it has been brought for the purpose of trim.-

ming or the like, no guide is necessary to center it or to direct it, since the lower or large 0 ring. GS may make contact with the hook L at any 4 point about its circumference, as also may the ring Q make contact with its opposed hook L. By thus making such terminal Of the lamp a circle or ring we dispense with 5 the necessity of any guiding device and in sure the lamp. being placed in circuit upon each occasion. When pressure is applied to the rope S, the lamp will be raised from the position. shown in Fig. 1 and the rings be re- 0 leased from their hooks, Immediately the springs H H cause the hooks to rise, and each carries upwardly with it the rod or bar E. This bar, in its rise engages the endF. of its associated cam E and thus forces the cam into the position shown in Fig. 4, or av somewhat similar position, where it guards the rings from again re-engaging with the hooks L L as the lamp is lowered. The lamp in lowering, however, forces the cams E outwardly, whereupon they engage with the pins M, thus forcing the hooks L also outwardly to obviate the possibility of the re-engagement of the hooksand terminal rings. The hook L will be restoredto its position, for its lug N,

engaging the pin 0, will cause the hook as it is forced outwardly to move against and slightly compress its associate spiral spring, so that assoon as the ring in passing downwardly is forced from thecam the spring will force the hook and cam back into substantially the'position shown in Fig. 4, where the hook andcam will remain until the lamp is again raised, so that its terminal rings will re-engage the hooks L. When the springs H Hare expanded, the plates G and J are contacted so as. to close circuit, and when they cam, ring, and arm E is more fully illus-- trated. In Fig. 6 the parts are shown in position to suspend the lamp, the ring engag ng the hook. In Fig. 7 is shown the position Where the ring has been released from its hook and is being guarded therefrom by the cam.

Fig. 8 shows the parts in position where the ring is descended past the end of. the cam and illustrates in what manner the hook is protected by the cam, so as to prevent the reengagement of the ring and hook while the former is descending. Fig. 9 represents the parts in the act of re-engagement, the ascendcam.

I claim- 1. In an arc-lamphanger, the combination of suspending-hooks with two substantially ring-shaped lamp-terminals placed in horizontal planes and adapted one to engage each hook, and thus the lamp to be placed in. circuit without any special guide.

2. In an arc-lamp hanger, the combination of suspending-hooks with associated cams,

each hook vertically movable and provided with an arm which controls the opposite cam, so as positively to force it to the proper position upon the movement of the hook.

3. In an arc-lamp hanger, the combination of suspending-hooks with associated cams, each hook vertically movable and provided with an arm which controls the opposite-cam, so as positively to force it to the proper, position upon the movement of the hook in either direction, the cam being forced in one direction when the hooks move upwardly and in another when the hooks move down.

4. In an arc-light hanger, the combination of vertically-movable suspending-hooks, each provided with a fulcrum and a spring, whereby it is retained or restored to-its normal position.

5. In an arc-light hanger, the combination of suspending-hooks with associated cams, each hook independently vertically movable and provided with an arm which controls the opposite cam, so as to separate the cam and hook, and thus form a guide to the hook when such hook is lowered while the other hook is raised.

Signed this 11th day of May, 1891, at Chicago, Illinois.

CHARLES A. PFLUGER.

In presence ofv H. M. DAY, H. B. HALLOOK.

lng ring being about to separate the hook and IIO

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