Thereafter a timed flasher provided the "on/off" characteristic. From 1912 to 1940 a falling weight mechanism rotated a metal shutter around the light causing the beam to be cut off to seaward for 10 out of every 30 seconds. At the turn of the century, an incandescent vapor lamp was used, followed by electric lights in 1919. Lard oil soon replaced whale oil, and in turn was replaced by kerosene in 1880. The first light source was a whale oil lantern in which the oil was forced up from a tank by a gravity-operated piston. A larger, second order light had been planned, but delay in shipment caused the present light, originally destined for the Fort Point Lighthouse in San Francisco, to be installed instead. The BeaconThe light is a third order Fresnel with lenses, prisms and mechanism manufactured in France in 1853.
LIGHTHOUSE KEEPER JOBS CALIFORNIA ARCHIVE
Please visit the Pt Pinos Lighthouse website for restoration and archive documents. Alcatraz Island Lighthouse preceded Point Pinos by 8 months, but was replaced in 1909 by the expanding military prison. Oldest Continuously Operating Lighthouse on the West CoastSince February 1, 1855, its beacon has flashed nightly as a guide and warning to shipping off the rocky California coast.
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