fountain lamp

plural fountain lamps

1. historicalA lamp fed with oil from an elevated reservoir.

   The flame generally used in reflectors is from an Argand fountain lamp, the wick of which is one inch in diameter.

   1854, Charles Tomlinson, Cyclopædia of Useful Arts, Mechanical and Chemical, Manufactures, Mining, and Engineering, page 180

   2 more examples

   The oil will be maintained at an uniform level in the burner of this lamp as perfectly as it is in the cocmmon fountain lamp, without being open to the objection against that lamp, of casting a shadow.

   1841 May 29, N. N. L., “Description of a plan for maintaining the oil of a lamp at a uniform level.”, in Mechanics' Magazine, number 929, page 408

   but it was asserted by Mr. Faraday that the beneficial effect could not be maintained unless the oil was supplied more copiously than at present by the inefficient fountain lamp universally supplied by the Trinity Board to the 1st order, dioptric lights.

   1861, Report of the Commissioners Appointed to Inquire Into the Condition of Lights, Buoys and Beacons, page 65

2. A lamp that consists of a large number of fiber optic tubes that mimic the spray of water from a fountain.

   A familiar application is the fountain lamp that has several hundred fibers spraying out of the top.

   1989, Ron Whittaker, Video Field Production, page 349