US1197555A - Incandescent lamp. - Google Patents

Description

.7 T- I. SHONLEY.

mcmpsscznr um; APPLICATION FILED 026.15. 1914.

1,197,555. PatentedSepp. 5, 1916."

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" a ine ra ninon THEODORE Zl'. SHONLEY, 0E LEAVEN'WORTE, KANSAS.

Incennnscnnr LAMP.

menses.

Epeciflcation of ie'jtters Patenti Patented s t. 5, rain Application filed December 15, 1914. Serial Ito. 877,381.

' may be used for matching colors, where the ordinary electric light cannot so be used. I In the drawings accompanying this specification and forming a part thereof, the preferable form of my invention is illu tratedQin which Figure 1 is a view in perspectiveof my novel lainp. Fig. 2 is asectional View taken on the line 2-2 of Fig. l.

Referring to the drawings in which simi lar reference numerals designate correspondi ing parts throughout the several views, the lamp includes the usual base 3 and exhausted bulb 4i,

The tube 5 which carries the lead-in wires 6 and 7 is supported by the base 3 into which the upper supporting arms 8 are atlixed.

The insulated post or standard 9 is carried by the tube..;5*and supports the lowerfilai cut. carrying arms' -10. The filament carrying arms 8 and 10 are insulated one from the other and include the hooked terminal ends 11 around which the filament extends as is the usual and approved construction.

The filament 12 which is supported by the arms'8 and 10 is formed of a plurality of discontinuous sections l314-15, three being illustrated in the present drawings, but it will be readily understood that this number may be varied if desired.

The filament section 13-is-in electrical connection with the lead-in 6 and has its opposite discontinuous end 16 rigidly affixed and -held stationary by one of the upper filament supporting arms 8. The adjacent ,filament section 1% is provided witl ffthe free bendable end 17 resting upon the stationary end 16 thereof with Which'it eifectsa sliding electrical connection. Thus the length of the active portions of the filaments 14 will depend upon the position of the free end 17 and the distance or length thereof which overlaps the stationary end 16 of the adjacent filament. The free end 17 is provided with the spaced stops 18 arranged upon opposite sides of the point of contact between the filament sections and limit the relative sliding motion therebetween. The remote free end 19 of the filament section-14 is similarly arranged and efiects a sliding elec- I trio connection with the filament section 15, which latter is in electric connection with the lead-in wire 7.

An incandescent lamp constructed as described provides an efiicientmeans for matching colors owing to its peculiar whiteness.

Having thus fully described my invention what l1 claim is An incandescent lamp having sectional filaments, including two end filaments and a central filament having projecting ends engagingand extending beyond the end filaments.

THEODORE J. snoNLnY.

Witnesses:

Jnssn A. HALL, H. V, REILLY.

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