An Improved Guide for the Carbon Holder of an Electric Are Lamp.
Year: 1898

page_text: Date of Application, 8th Feb., 1898
Complete Specification Left, 10th Aug., 1898-Accepted, 10th Sept., 1898
PROVISIONAL SPECIFICATION.
An Improved Guide for the Carbon Holder of an Electric Are Lamp.
I, SIGMUND BERGMANN, of 572, First Avenue, New York City, State of New
York, United States of America, Electrical Engineer, do hereby declare the nature
of this invention to be as follows:
My invention relates to means of supporting and guiding the upper carbon of
an electric arc lamp, and conveying the current from the guiding tube to the
carbon as I shall describe referring to the accompanying drawings in the several
figures of which similar numerals indicate like parts:
Fig. 1 is a view part in elevation and part in vertical section, showing a magnet
spool, guiding tube, carbon holder and a pair of electric light carbons.
Fig. 2 is a transverse section on the line of Fig. 1.
Figs. 3 and 4 are detached vertical sections of portions of the carbon holder.
5 represents a solenoid, 6 a guiding tube, which is in circuit with the solenoid
coil through the conductor 7. The upper carbon holder consists of the body 8,
with split divided part 9 holding the carbon.
From the shoulder at 10 projects upward a stem 11, screw threaded at the top.
The shoulder 10 is annularly hollowed to form a race 12 for a number of balls 13.
Over the balls is a cylindrical piece 14, having a bore 15, fitting the stem 11.
The lower end of 14 has a convex surface 16 which lying over the balls 13, tends
to force them outward.
This portion 14 bears on the balls by its weight which may be aided by a
spring 17 contained in a cavity 18 and interposed between its bottom and the
As
under surface of the interior of a cap 19, which is screwed on the stem 11.
the cap 19 merely serves to enclose the part 14 and adjust the pressure of the .
spring 17 both this cap and the spring might be dispensed with.
The balls serve to guide the carbon holder in the tube and to form a rolling
clectrical conductor between the carbon holder and the tube.
L
OIL
...
1000
ABEL & IMRAY,
Agents for the Applicant.
An Improved Guide for the Carbon Holder of an Electric Arc Lamp.
I, SIGMUND BERGMANN, of 572, First Avenue, New York City, State of New
York, United States of America, Electrical Engineer, do hereby declare the nature
of this invention and in what manner the same is to be performed to be particu-
larly described and ascertained in and by the following statement:-
My invention relates to means of supporting and guiding the upper carbon of
an electric arc lamp, and conveying the current from the guiding tube to the
077

page_text: carbon as I shall describe referring to the drawings accompanying my Pro-
visional Specification, in the several figures of which similar numerals indicate
like parts.
Fig. 1 is a view part in elevation and part in vertical section, shewing a magnet
spool, guiding tube, carbon holder and a pair of electric light carbons.
Fig. 2 is a transverse section on the line of Fig. 1.
Figs. 3 and 4 are detached vertical sections of portions of the carbon holder.
5 represents a solenoid, 6 a guiding tube, which is in circuit with the solenoid
coil through the conductor 7. The upper carbon holder consists of the body 8,
with split divided part 9 holding the carbon.
From the shoulder at 10 projects upward a stem 11, screw threaded at the top.
The shoulder 10 is annularly hollowed to form a race 12 for a number of balls 13.
Over the balls is a cylindrical piece 14, having a bore 15, fitting the stem 11.
The lower end of 14 has a convex surface 16 which lying over the balls 13, tends
to force them outward.
This portion 14 bears on the balls by its weight which may be aided by a
spring 17 contained in a cavity 18 and interposed between its bottom and the
under surface of the interior of a cap 19, which is screwed on the stem 11. As
the cap 19 merely serves to enclose the part 14 and adujst the pressure of the
spring 17 both this cap and the spring might be dispensed with."
The balls serve to guide the carbon holder in the tube and to form a rolling
electrical conductor between the carbon holder and the tube.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is;
-
In combination with a guiding tube for a carbon of an electric arc lamp, a
carbon holder and a set of balls which act both as bearings and rolling electrical
contacts interposed between the tube and the holder substantially as described.
Dated this 10th day of August 1898.
ABEL & IMRAY,
Agents for the Applicant.