US449236A - Wflru - Google Patents

Description

I (No Model. 2Sheets--$heet J. H. R. WARD.

ELECTRIC ARU LAMP.

Patented Mar.31,1891.

QM/W

2 Sheets Sheet 2 (No Model.)

J. H R. WARD, ELECTRIC ARC LAMP.

TUR WHRD I!!! iljllmllllllllll will" k w o4 NITED STATES PATENT rrion.

JOHN H. R. \VARD, OF NEW YORK, N. Y., ASSIGNOR TO THE UNIVERSAL ARC LAMP COMPANY, OF SAME PLACE.

ELECTRIC-'ARC LAM P.

SPECIFICATION forming part of Letters Patent No. 449,236, dated March 31, 1891.

Application filed December 8, ldQO. $erial 110,373,942- (No model.) 7

To all whom it may concern:

Be it known that I, JOHN H. R. WVARD, a citizen of the United States, and a resident of New York, county and State of New York, have invented certain new and useful Improvements in Electric-Arc-Lamp Shadellolder, (Case 3,) of which the following is a specification.

My invention relates to the mechanical construction of that portion of an electric-arc lamp for supporting the usual transparent or translucent shade or globe.

The object of the invention is to provide means whereby the removal of the globe may be facilitated during the adjustment of the carbon-rods of the lamp and whereby the globe may be again adjusted toits proper position.

The details of the device embodying the invention are set forth in the accompanying drawings.

Figures 1 and 2 are vertical elevations at right angles to each other of alamp equipped with my invention. In Fig. 2 a portion of the globe is broken out on the near side. Fig. 3 is a view of the device in the same direction as seen in Fig. 1. The dotted linesin Fig. 3 are in a position of certain sections shown in subsequent figures. Fig. 4 showsa section at the line Y, looking downward, all portions below the line Y being omitted. Fig. 5 is a sectional View at the line Z, looking downward as far as the line XV. Fig. 6 is a sectional View at the line S, looking downward. Fig. 7 is a View of one of the hooks and handles or rings, partly in section as to those parts supporting the hook. Fig. 8 is the lower part of the frame of the lamp in plan View.

The device embodying the invention consists of the combination of a lamp a, provided with vertical tubes 1), suspended therefrom and forming a part of the frame of the lamp; a cross-piece 0, also forming a part of the frame and connecting rigidly the lower ends of the tubes 1) and provided with beveled holes d in opposite ends thereof, the smaller ends of the holes being at the lower portion of the cross-piece c; a clasp e, having projections f and attached at equal heights on the respective tubes 1), the projections f being separated from each other, except as to a pin 9, connecting the same in each clasp, the pin beinghorizontal and retaining the projections in such a manner as to hold the clasp rigidly 011 its tube; a globesocket h, carrying the globe 2' and carried by a cross-piece c, which connects two vertical rods 1), which pass upward through the beveled holes d and terminates in handles or thunt b-rings jand sliding rings j, each sliding ring being at right angles to the thumb-ring, the riugsj' surrounding the tubes b, the rings j being oval insuch a direction that they may be pulled away from each other; hooks m, attached to the rings j on those sides facing the tubes 1) and normally supported on the pins g, and a cup at for catching oil, particles of unburned carbon, &c.

A indicates one of the conductors passing to thelower carbon-holder B. Through one of the tubes 0 are set-screws for retaining the globe i within the socket. The cross-piece c is provided with a'central hole D, in which is attached the carbon-holderB in an insulated manner by the insulating-spool E. On each side of the hole D are located holes F, through which pass the ends of the tubes b, which are secured to the cross piece by shoulders G and nuts B.

The pins 9 represent, typically, any suitable projection to the tubes 1) for supporting the hooks m, whereby the weight of the globe, its socket, and holder are prevented from falling from their highest position (shown in Figs. 1 and 2) to alower position. (Shown also in Fig. 4.)

The operation of the device is described as follows: Supposing that the globe is in its highest position, which is a normal position, and that the hooks m rest upon the pins 9, the operator grasps one of the rings j in each hand and pulls them in opposite directions, whereby the said hooks are released from said pins, and then he allows the globe holder or socket h, together with those parts attached to it, to fall until the sliding rings 7' rest upon the shoulders G. The rods 1), being of considerable length in proportion to their diameter, are elastic and flexible, being made preferably of hard brass. WVhen pulled apart and then released, they spring back to their original position. When the carbons have been adjusted and any other desirable matters attended to, the operator raises the globe by grasping each ringj and raising the same. He then pulls the rings apart so that the hooks m are brought above the pins q, where they are allowed to rest.

I claim as my invention An clectric-arc-lamp globe-holder consisting of the combination of a globe-sooket, elastic and flexible rods carried thereon, two rings at the opposite end of each rod at right angles to each other, tubes suspended from the lamp parallel to each other and said rods and passing through one of the rings on each rod, hooks attached to the remaining rings, supports, such as pins g, attached to said tubes for the purpose, as described, of supporting said hooks, and across-piece connecting the lower ends of said tubes and provided with holes through which pass said rods.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses this 1st day of May,1890.

JOHN H. R. WARD.

Witnesses:

EDWARD P. THOMPSON, E. G. DUVALL, Jr.

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