US588822A - Electric-arc lamp - Google Patents

Description

(No Model.)

B. E. GREENE.`

ELECTRIC ARO LAMP.

No. 588,822. Patented Aug. 24,1897.

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BENJAMIN F. GREENE, OF SI-IERIDAN, PENNSYLVANIA.

ELECTRIC-ARC LAM P.

SPECIFICATION forming part of Letters Patent No. 588,822, dated August 24, 17897.'

Application filed April 22, 1897.

Be it known that I, BENJAMIN F. GREENE, a citizen of the United States of America, residing' at Sheridan, in the county of Allegheny and State of Pennsylvania,liave invented certain new and useful Improvements in Arc- Iiights, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in arc-lamps, and has for its object to construct a lamp of this type wherein the gas generated by the combustion of the carbons will be retained and the life of the carbon thereby increased.

A further object of the invention is to provide means for automatically feeding the carbonin order to insure a steady and even light therefrom and to obviate the flickering and fluctuating of the light ordinary discernible in lamps of this character.

A further object of the invention is to provide an arc-lamp that will be applicable for use either within a building or for street use, and a still further object is to construct a lamp extremely sim ple in constructiomstron g, durable, effectual in its operation, and comparatively inexpensive to manufacture.

The invention finally consists in the novel construction, combination, and arrangement of parts to be hereinafter more specifically described, and particularly pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this speciiicatiomand wherein like letters of reference indicate similar parts throughout the several views,in which- Figure l is a vertical sectional view of my improved arc-lamp as constructed for indoor use. Fig. 2 is a side elevation of the long lamp as employed for outdoor use, showing globe in section. Fig. 3 is a side view, partly in section, of the feeding mechanism. Fig. 4 is a cross-sectional view taken on the line X X of Fig. 3. Fig. 5 is a plan view of the check-plug, supporting-plate for globe, and hanger carrying the lower carbon. Fig. 6 is a longitudinal sectional view of the same.

Fig. 7 is a plan view of one of the packingrings employed in the check-plu g.

Referring now to the drawings by reference- Serial No. 63 3,296. (No model.)

letters, d indicates the inner frame, to the top cross-bar of which is fulcrumed an arm d', having its lower end pivotally secured to an elbow-lever l), which is journaled in a swinging frame c, said frame being in turn pivotally supported by the inner frame a and carries in its one end an armature c, operating in a magnetf, which is supported by a bedplate f', and on its other end is connected to a dash-pot d. Said elbow-levert) is provided with a bifurcated end, the arms 7c of which engage within a circumferential groove m, formed in the clutching-ring g on the upper carbon-rod g', said clutching-ring g being provided with a beveled upper face which engages a sleeve 7L, having a mitered end l and a iiange z', which extends downward into close proximity with the swinging frame c.

In Fig. l I have shown in dotted lines an elbow-arm n, which connects the elbow-lever l) with the clutching-rin g g. As in this form of lamp the clutching-ring lies at the bed-plate f', while in a long lamp, which is the construction shown in Fig. 3, the clutching-ring will be at a point above the magnet. The base-plate f is connected to the plate f2 by rodsfg, said platef2 being adapted to support the shadef'l and the hanger for the lower carbon, which is accomplished by a ring or plate f5, Carr Ying lugs c', which engage in grooves formed in the plate f2, said ring f5 being turned so asto cause the lugs to engage the ring or plate f2. Rods e2 are connected to the ring or plate f5 and carry the holder or hanger c3, which supports the lower carbon e4. Located within the ring f5 is a checlcplug d', from which the carbon passes and has arranged around the carbon a series of packing-rings dwhich serve to prevent the gas that is generated within the globe cl3 from escaping, and thus increasing the efficiency and life of the carbon, the seat for the check-plug being sufficiently large to admit of this plug adjusting on its seat to keep the upper carbon in perfect Contact with the lower carbon, said plug being held in its position by means of an annular ring cli. Insulation Z is provided at the plate f', and insulation g2 is also provided at the base of the holder or hanger c3, the contact from the frame o. to the upper-carbon rod being shown in Fig. 3 at g3, and in Fig. 2 I have shown in dotted outlines the globe g4, which sur ICO rounds the inner globe when the lamp is used for outdoor lighting. The carbon-rods being secured in their proper positions the armature Will be in complete engagement with the magnet and the inclined face of the clutching-ring will be in engagement with the projecting end of the sleeve,\vhich will serve to hold the clutching-ring in irm engagement With the carbon-rod, and as the carbon becomes consumed the rising of the armature operates the oscillating frame and causes the i same,wl1ile vibrating, to engage the pin ld,

lifting the sleeve from its close engagement with the clutchin g-rin g and perm ittin g the rod to descend, so as to allow the upper carbon to drop into engagement With the lower carbon,when the rod is again engaged by the ring and the carbon thus fed automatically until the entire carbon is used, thus materiallyv increasing the lite of the carbon, as the same is fed evenly and is used until the entire carbon is consumed, and by reason of the checkplug located at the top of the globe d3 the gas, which is generated Within the globe, is prevented from escaping, and is thus consumed to add to the brilliancy of the light.

It will of course be observed that by changing the magnet so as to conform thereto the same mechanism may be employed for an alternating current and the lamp used thereon, and it Will also be noted that various changes maybe made in the details of construction Without departing from the general spirit ot my invention.

Having fully described my inventiomwhat I claim as new, and desire to secure by Letters Patent, is

l. In an are-lamp the combination with a clutching-ring of a sleeve having a mitered end engaging said clutching-ring,andaswinging frame carrying an elbow-lever to engage the ring, said swinging frame connected to an armature and dashpot to operate the clutching-rin g and automatically feed the carbon as required.

2. In an arc-lamp the combination with the inner frame a rod operating in said frame and engaging the carbon, a clutching-ring and sleeve carried by said rod, an elbow-lever having one arm connected to the frame by a link, the opposite end engaging in a circumferential groove in the clutching-ring, a swinging frame pivot-ally connected to said elbow-lever and electrical means for automatically feeding the carbon, substantially as shown and described.

ln an arc-lamp the combination of the inner frame,an elbow-lever pivotal] y attached to said frame, a swinging frame pivoted to the su pportingframe,said elbow-lever fulcru med to said swinging frame and having a bifureated end, a rod sliding in said inner frame, a sleeve having a mitered end operating on said rod, a clutch-ring having a circumfer` ential groove engaging the bifurcated end of the elbow-lever and operating to retain the sleeve in position, means whereby the clutching-ring is released to automatically feed the carbon` a lamp-globe su rrou nding the carbon, a check-plug in the top ot' said lamp-globe to retain the generated gas, substantially as shown and described.

ln testimony whereof I allix my signatuie in presence oi' two witnesses.

BENJAMIN F. GREENE.

\Vitnesses:

W. H. Turrini-mann, Guo. B. PARKER.

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