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Scientific American, Vol. 89, No. 8 (1903) (1903)
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o be from beaver case the material has been entirely removed, showing the full diameter. The two tracks shown are merely used for picking up the cast-iron plates and placing narrow-gage working tracks for the contractors. Ul- them in position ready for bolting up. It is interesting to know that in… … trols the motor mounted in the base of the searchlight which operates the projector in a vertical direction © 1903 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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