US501938A

US501938A - Zelton

Info

Publication number: US501938A
Authority: US
Publication date: 1893-07-25
Anticipated expiration: 1910-07-25

Description

(Nd Model.)

, P DLHAZEL'TON! CARBON HOLDER FOR ELECTRIC'ARG LAMPS.

Patented J'u1y25, 1893";

v No. 501,938.

UNITED STAT S PATENT OFFI E.

FREDERIO DANA HAZELTON, OF NEW YORK, N. Y., ASSIGNOR TO SIGMUND BERGMANN, OF SAME PLACE.

CARBON-HOLDER FOR ELECTRIC-ARC LAMPS.

SPECIFIGATION forming part of Letters Patent No. 501,938, dated July 25, 1893.

Applicationfiled January 10, 1893- fier'ial No. 457,884. (No model.) 7

To all whom it may concern:

Be it known that I, FREDERIC DANA HA- ZELTON, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Carbon-Holders for Electric-Arc Lamps, of which the following is a specification.

My invention relates to carbon holders for electric arc lamps and one object of my invention is to construct a carbon holder by which the upper carbon can be moved to any required position so as to be properly adjusted with referenceto the lower carbon.

Another object of my invention is to construct a carbon holder in which carbons of varying diameter say from one-half to fiveeighths of an inch may be inserted and securely held.

A further object of my invention is to construct a carbon holder which grasps but a small portion of the length of the carbon thus reducing waste of carbon.

In the accompanying drawings forming a part of this specification Figure 1 represents a front view of the preferred form of my invention. Fig. 2 is a side elevation. Fig. 3 is a plan view looking upwardly of Fig. 2. Figs. 4. and 5 represent respectively front and side elevations of a modified form of my invention.

Referring to the drawings 1 is a portion of the toothed brass rod or rack bar which cooperates with the mechanism of an arc lamp (not shown). To the lower end of this bar and to but a small portion in length of the same I secure my carbon holder. This I construct as follows: I take a U shaped casting Y the carbon is held and pressed against two sides of the same. Screw-threaded lugs 7 are formed on the lateral adjuster 6 to receive the screvs threaded ends of the clamping screws 8 and 9 the latter being provided with a handle.

The clamping bar 10 is provided with two openings through which the screws Sand 9 readily pass their heads bearing on the outside of the same. Between this clamping bar and the lugs of the lateral adjuster and surrounding the stems of the screws are placed the spiral springs 11 which act to force the clamping bar outwardly against the heads of the screws. The lateral adjuster 6 being held frictionally by the screw 5 is capable of a certain amount of lateral movement determined by the space 12 left between it and the lower side of the cross-wise adjuster. The cross-wise adjuster and the lateral adjuster formsubstantially a universal joint and permit the point of the carbon to be accurately adjusted. As will be seen from an inspection of the drawings the distance from the top of the cross-wise adjuster to the bottom of the lateral adjuster is very small much space being thus economized both as regards the toothed rod and the small portion of the carbon that is grasped by the holder.

When insertinga new carbon into my holder I merely loosen screw 9 or both screws 8 and 9 to a suffioient extent so that the burned carbon can be removed. A new carbon is then inserted between the clamping bar and the frame of the lateral adjuster and the screw or screws again tightened. As the clamping bar canbe adjusted nearer to or farther from the frame of the said adjuster it is evident that carbons of varying diameter can be clamped in myholder.

In Figs-4. and 5 which represent amodification the U shaped cross-wise adjuster 2' is suspended from the rack bar 1 being frictionally pivoted thereto, and the lateral adj uster 6 is suspended from the lower part of the cross-Wise adjuster being frictionally pivoted thereto. The clamping bar 10' is similar to the clamping bar 10 in Fig. 1, and the clamping screws 8 and 9 and springs 11 are the same as those in Figs. 1 to 3. The operation is substantially the same.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,'is

1. In combination with the rack bar, a crosswise adjuster frictionally secured thereto, a lateral adjuster frictionall secured to the cross-wise adjuster so as to have a movement at right angles to'the latter, a clamping bar; and screws for holding the carbon firmly in place, substantially as described.

2. In combination with the rack bar, a U- shaped cross-wise adjusterfrictionallysecured thereto, a lateral adjuster frictionally secured to the cross-Wise adjuster, a clamping bar springs and screws for holding the carbon firmly in place, substantially as described.

3. In combination with the rack bar, a U- shaped cross-wise adj usterfrictionally secured to the rack bar so as to extend laterally therefrom a lateral adjuster pivoted to the crosswise adjuster so as to extend downward -and under the same, and clamping means for. holdinga carbon in place, substantially vas described. a

- 4. lncombination with the rack bar,a U- shapedcross wiseadj usterfrictionallysecured i to the rack bar so as to extendlaterallythera from, a lateral adjuster pivoted to the crosswise adjuster so as to extend downward and under the same, a clamping bar, springs and screws for holding the carbon firmlyin place, substantially as described/ 5. In a carbon holder for an arc lamp the combination with'the adjuster receiving the end of the carbon, of a clamping bar, screws which pass through openings in the clamping bar and screw into the said adjuster and spiral springs surrounding the said screws and bearing on the clamping bar, substantially'as described.

Signed at New York, in the county of New York and State of New York, this 30th day of December, A. D. 1892.

FREDERIG DANA ZHAZtE-LTON.

Wi tn esses:

P. H. KLEIN, J12, S. BERGMANN.