US399786A - Benjamin schardt and george jones - Google Patents

Description

{No Model.)

B. SOHARDT & G. JONES. ELQEGTRIG LIGHT SUPPORT.

No. 399,786. Patented Mar. 19, 1889.

gwvawtoz N PETERS. Pholo-Lithugnphnr. Wuhingtnm D C UNITED STATES PATENT OFFICE.

BENJAMIN SOHARDT AND GEORGE JOY IS, OF DAYTON, OHIO, ASSIGNORS OF ONE-THIRD TO JOHN R. FLETCHER, OF SAME PLACE.

ELECTRIC-LIGHT SUPPORT.

SPECIFICATION forming part of Letters Patent No. 399,786, dated March 19, 1889. Application filed March 19,1888. Serial No. 267,773. (No model.)

T u/ZZ 1071/0711 it "my concern.-

The dome comprises the cap-plate A, of

Beit known that we, BENJAMIN SCHARDT and 1 cast metal, the metallic cylinder D, attached (.lrEORGE JONES, citizens of the United States.

residing at Dayton, in the county of Mont- 5 go nery and State of Ohio, have invented certain new and useful Improvements in Electric-Arc-Light Supports; and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, refer ence being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Our invention relates to improvements in electricarc-light supports, and is an improvement on Letters Patent allowed to us on the 29th day of February, 1888, Serial No. 201,836.

The nature of our invention consists of a spring-actuated catch held in lugs of the capplate of the dome, which engages an arm attached to the top of an arc lamp, thereby relieving the cords used in raising and lowering the are lamp from holding the same while suspended on the cable and in circuit.

Our object is to hold an arc lamp in a fixed position while the electric circuit is formed through the connection-pieces of the dome, and thereby making the said circuit secure, which could not be the case while suspende by cords, which contract and expand by moisture, and are subject to loosening.

Ive attain the object by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a fragmentary view of the device, portions of the dome being cutaway. The cap-plate is partly in section on line JJ,

Fig. 2, and other parts in central vertical sec tion. Fig. 2 is a view of the underside of the cap-plate with operative parts attached. Fig. 3 is a view of the arm-connection to the arc lamp and is at a right angle to the view of these parts in Fig. 1.

Like letters designate like parts throughout the several views.

The illustration shows so much of the former invention as is necessary to make clear the relation of the suspending device to the aforesaid improvement.

to the rim of the same, and the inner cylinder, E, of wood, secured to the latter. The electrical connectives, attached to the inner cylinder on opposite sides, are identical, and consist of forked arms F, uniting at the center to form a short circuit through the dome, and spring-plates L to form a circuit through the suspended are lamp. The shield G comprises the wooden top with plates 8 to form the electric connection with the spring counection-plates, and a metallic cylinder which incloses the top of an arc lamp, (shown at. II and I I, Figs. 1 and 3,) and to the lower end of this cylinder is attached the top plate of the lamp. To the eye-plate II. is bolted the wooden arm 13, and to this is bolted the iron bar B, having a shoulder to engage the catch 4., held in the lug 2 of the cap-plate, and the rounded portion of said catch is held in lug 3, attached to the cap-plate by screws. Between this lug and the shoulder of the catch is the spiral spring 5, which keeps the end of the catch thrust beyond the lug. On the under side of the catch is an eye forthepurpose of attaching a cord or wire to withdraw the catch. The lug 2, that supports the inner end of the catch, with the lugs 1 1, holds the shaft on which the pulleys 0 it are pivoted. The lower ends of lugs 2 2 are rounded to serve as guides to the shouldered arm attached to the are lamp.

The cords to raise and lower the lamp are tied to the spools .I .I, or in other convenient manner attachcthand the cords are then passed over the pulleys to the pole along the cable and to near the ground in the usual manner. The are lamp is raised by the two cords, and as the shouldered head of the arm presses the catch back until the shoulder passes the lamp is then securely held within the dome. To release the lamp, the cord is grasped and the catch withdrawn and the same drops out of position.

In the illustration the are lamp is shown as it is suspended from the dome. The dotted lines at the top show the position of the supporting-cable, the next below the position of the sustaining-cords, which pass over the pulleys and are attached to the lamp, and the lowest the position of the cord or wire attached to the eye of the catch, by which the same is withdrawn from contact with the supporting-arm of the arc lamp. The electrical wire connections are not shown, and it is sufficient to say that the binding-posts of the arc.

lamp are connected to the metallic plates 8 8 of the shield, and the line-wires connecting with the dynamo are connected to the pivotal arms F, and to the support of these is attached the spring connection-plates L.

Having fully described our invention, what we claim, and desire to secure by Letters Patent, is-

1. In an electric-arc-light support, the dome cap-plate A, having lugs 2 and 3, holding the spring-actuated catch 4, in combination with a shouldered arm-support attached to the top of an arc lamp to support the same in an electric circuit formed through the connective parts of said dome, substantially as set forth.

2. In an electric-arclight support, the dome cap-plate A, with supporting-lugs to retain a horizontally-sliding catch held in a locking position by a spiral spring, which surrounds the rear part of said catch, to engage a supporting-arm attached to an electric-arc lamp, substantially as set forth.

3. In an electric-arclight support, the dome plate having lugs 2 2, with rounded ends, to guide the arm attached to an arc lamp,

thereby engaging the spring-actuated catch held in said lugs, substantially as set forth.

In testimony that we claim the foregoing as our own we affix our signatures in presence of two witnesses.

BENJAMIN SOI-IARDT. GEORGE JONES.

WVitn esses OHAs. A. WALTMIRE, B. PICKERING.

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