US415572A

US415572A - scribner

Info

Publication number: US415572A
Authority: US
Publication date: 1889-11-19
Anticipated expiration: 1906-11-19

Description

(No Model.) 3 Sheets-Sheet l;

C. E. SORIBNER.v

ARG LAMP. No. 415,572. Patented Nov. 19, '1889.

726,951 @.9 l lz/Ue @fon faw/ 1 mw imm@ (No Model.) 3 Sheets-Sheet 2.

0. E. SGRIBNER.

, ARG LAMP.

No.1115,572.l Patented Nov. 19, 1889.

Per.

(No Model.) 3 Sheets-Sheet 3.

C. E. SGRIBNER.

ARG LAMP.

No. 415,572. Patented Nov. 19, 1889.

UNITED STATES vPATENT OEEICE.

CHARLES E. SCEIBNEE, OE CHICAGO, ILLINOIS, AssIGNOR To THE WESTERN ELECTRIC COMPANY, OE SAME PLACE.

A RC LA M P SPECIFICATION forming part of Letters Patent No. 415,572, datedNovember 19, 1889.

Application filed December 22,1884. Serial No. 151,0044. (No model.)

To all whom it may concern: to the same support or lever and work uni- Be it known that I, CHARLES E. SCRIBNER, formly. a citizen of the United States, residing'at Chi- In the drawings, Figure l is a front elevacago, in the county of' Cook andState of Illition of a portion of an electric-arc lamp emvnois, have invented a certain new and useful bodying my improvements. Fig. 2 is a side 55 Improvement in Double-Carbon Arc Lamps, elevation of the regulating and transfer mechof. which the following is a full, clear, concise, anism of the same, certain parts bein g broken and exact description, reference being had to away. Fig. 3 is a planview as seen from secthe accompanying drawings, forming a part tion-line o: c of Fig. 2. Fig. 4 is a diagram ro of this specification. illustrative of the circuits. Fig. 5 is a de- 6o My invention relates to electric-arc lamps; tailed view of the annular clutch which susand it consists in the combination of mechtains the second carbon-rod until the first caranisln whereby two sets of carbons may be bon-rod is finally arrested in its descent.

` used in the same lamp. Like parts are indicated by similar letters In myapplication,SerialNo.11G,102,forelecof reference throughout the different figures. 6 5 tric lamps filed December 31, 1883, I have de- The lifting-magnet a, of coarse wire, is inscribed and claimed certain regulating mecheluded in the main circuit, and the feedinganism for single-carbon electric lamps. In magnet b, of fine wire, in a shunt of the arc the lamp herein described I make use ot simiin the usual manner. The lever c carries two zo lar regulating mechanism modified so as to be clutches d c, of well-known construction. 7o adapted to double-carbon electric lamps. The `The first carbon-rodf is first fed by mechansecond carbon-rod is held up by an annular ism operating in the usual Inanner until the clutch while the first carbon is burning. The rod is arrested in its descent by the collar f first carbon-rod is finally arrested in its decoming against stop f2, as shown in Fig. 2.

scent, and the arc of its carbon increases un- The arc then continues to increase in length, 75 til the magnet in the shuntof the arc draws and consequently in resist-ance, until suffiits armature to a contact-point connected cient current is sent through magnet l) to through a solenoid or electro-magnet, which Ymove armature-lever g into Contact with conoperates the annular clutch which sustains tact-point 71, closing `the circuit of retailithe second carbon-rod. The second carboning electro-magnet or solenoid fz'. This arma- 8o rod is thus releasedv and falls, shunting out ture-lever g, I have shown in the form of the arc of the first set of carbons and the iinea bell-crank, with connecting-levers p and q, wire electro-magnet. The fine-wire electrowhereby motion of the lever gis Communimagnet is thus de-energized, and the' spring cated to the lever c,'upon which the clutches 3 5 opposing the attraction of its armature by are. mounted. This feeding-lever mechanism, 85 pressure upon its armature-lever thereupon it will be seen, is operated gradually as the operates to separate the second set of carbons arc increases in length. This mechanism is and establish the arc. Before the first arc is so adj usted that the clutches are opened to established the rod of the second set of car- `cause the rods to feed at the proper mom-ent.

4o bons is raised and clamped by the annular The feeding-lever mechanism, in addition to 9o clutch, in which position it is held until the operating the clutches, acts as a switch to first rod is arrested in its descent. The first close the circuit of the retaining-magnet for Iod, after the arc of its carbon is established, the purpose of shifting the arc from the first continues to descend until finally, while the set of carbons to the second set of carbons.

arc continues to burn,it is arrested by a stop. The annular clutch Za is thus lifted and the 95 Vhen, therefore, the currentis cut off and the circuit is closed at a point Z, thus holding said first arc goes out, the rst set of carbons will annular clutch up out of engagementv with the remain separated. The feeding-clutches of second rod m during the remainder of the the two rods are not both actively in use at time that the lamp is burning. The rod m,

5o the same time. They are, however, attached being thus released, descends until the second 10o set of carbons are brought together. rlhe arc of the first set of carbons is thus shunted and goes out, and the strength of the current through t-he electro-magnet h is so weakened th at the armature-lever g is carried away from the poles of said magnet by the force of spring n, which presses against the adjustable screw n', passing through the lower part of the bellcrank or armature-lever g. The link or rod o, attached to lever p and lever c, is thus carried up, and with it the lever c and clutch c. The second set of carbons are thus separated and the are established.

Vhen the clutch CZ of carbon-rod f comes against its opposing stop and opens, permitting said rod f to descend, the other rod mis held suspended bythe annular clutch 7c. On the other hand, when the rod m is released by its clutch e, the first rod f is held suspended by the stop f. It will thus be seen that the weight of only one rod and its carbon bears upon the lever c at the moment of feeding as long as the lamp continues to burn.

The clutches d and e come against their opposing stops d e simultaneously, and they are opened simultaneously. The moment of feed with relation to theA length of arc is therefore the same, no matter which rod is feeding-that is to say, while the first set of carbons is burning the iirst rod feeds at the moment the arc becomes of a given length, and while the second set of carbons is burning the second rod feeds when the arc is of the length of the arc of the first set at the moment of feeding. The arc of the lamp is thus maintained at a uniform length, no matter which set of carbons may be burning.

I claiml. The combination, in a double-carbon electric-arc lamp, of a solenoid or electromagnet and its armature, a clutch controlled by said armature, a rod supported `by said clutch, and a contact-point Z, whereby the circuit may be closed and maintained through the said electro-magnet or solenoid and the clutch held out of engagement with its rod, substantially as and for the purpose specified.

2. The combination, with a solenoid or electro-magnet and its armature, of the clutch and one of the two rods of the lamp, the circuit, contact-point 7L, and the feeding mechanism, whereby the said circuit is closed through said contact-point h and the solenoid or electro-magnet, substantially as and for the purpose specified.

The combination, with a solenoid or electro-magnet and its armature, of the clutch and one of the two rods of the lamp, which is adapted to be sustained by the said clutch, circuits through the said solenoid, two switching devices connected with said circuits to close the circuit of the said solenoid, one of the switches being controlled by the feeding mechanism of the lamp and the other being controlled by the solenoid-armature, whereby the circuit of said solenoid may be closed to release the carbon-rod and its armature held suspended during the operation of the lamp.

4. The combination, with the two sets of carbons and the carbon-rods, of the retainingmagnet, which is connected with the clutch which normally supports the rod of the second set of carbons, a circuit through said retaining-magnet,with contacts adapt-ed to be closed by the feeding mechanism of the lamp, whereby the clutch may be lifted by the retaining-magnet and the second carbon-rod set free and the clutch retained during the operation of the lamp.

In witness whereof I hereunto subscribe my name this 26th day of November, A. D. 1884-.

CHARLES E. SCRIBNER. lVitnesses:

GEORGE P. BARTON, I IAnRIsoN P. NICI-Ions.