GB190418342A - Improvements in Electric Incandescent Lamps. - Google Patents

Improvements in Electric Incandescent Lamps.

Info

Publication number
GB190418342A
GB190418342A GB190418342DA GB190418342A GB 190418342 A GB190418342 A GB 190418342A GB 190418342D A GB190418342D A GB 190418342DA GB 190418342 A GB190418342 A GB 190418342A
Authority
GB
United Kingdom
Prior art keywords
filaments
filament
incandescent
serves
series
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
James Wiley Phelps
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB190418342A publication Critical patent/GB190418342A/en
Expired legal-status Critical Current

Links

Landscapes

  • Resistance Heating (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

18,342. Phelps, J. W. Aug. 24. Incandescent lamps. - L a m p s, especially those with two filaments for emitting light of different intensities, are constructed with switches operable by means of cords from a distance. The lamp base may be made to fit the ordinary types of holders, and consists of cylindrical metal sections 10, 11 fitted one within the other and fastened together. In the end of the section 10 the globe 12 is fixed by means of suitable cement 13, which also serves to hold in place a thin plate 19 of insulating-material carrying the switch. A cord 24 passing through eyelets 25 serves to actuate the switch arm 21, and is carried to any convenient point. The two filaments are placed in series, and the free end of the high-power filament 28 is connected to one terminal 17 of the lamp, carried by a porcelain plate 16. The other terminal 18 is connected to the switch arm. The free end of the low-power filament and the junction of the two filaments are connected respectively to two contact-studs 26, 27 on the plate 19. As the arm 21 is rotated from the position shown in Fig. 3, it first meets the stud 26, thereby sending a current through the two filaments in series, the filament 29 alone becoming incandescent, and then short-circuits the low-power filament, the highpower filament 28 becoming incandescent.
GB190418342D 1904-08-24 1904-08-24 Improvements in Electric Incandescent Lamps. Expired GB190418342A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190418342T 1904-08-24

Publications (1)

Publication Number Publication Date
GB190418342A true GB190418342A (en) 1904-09-29

Family

ID=32165157

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190418342D Expired GB190418342A (en) 1904-08-24 1904-08-24 Improvements in Electric Incandescent Lamps.

Country Status (1)

Country Link
GB (1) GB190418342A (en)

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