Find A ProjectSign Up To TranscribeSign In
EN
DeutschEnglishEspañolFrançaisPortuguês

8

OverviewVersionsHelp

Here you can see all page revisions and compare the changes have been made in each revision. Left column shows the page title and transcription in the selected revision, right column shows what have been changed. Unchanged text is highlighted in white, deleted text is highlighted in red, and inserted text is highlighted in green color.

2 revisions
yaquinalights at Mar 13, 2017 06:02 PM
yaquinalights
Sara Carlstead Brumfield

8

Tillamook Rock Light Station, Oreg.
1. Lens made by Henry Lefrante, Paris.
First order, catadioptric Fresnal lens.
Revolving, once in two minutes, with white flash every five seconds.
24 panels in lens apparatus.
18 prisms above dioptric drums.
8 “ below “ “ .

2. Funk’s 1st order hydraulic float lamps.
Height from base to top of burner, 34.31 inches.
3. Distance “between centers of bolts on which the lamp directly rests”, 15.82 inches.
6. Height from focal plane of lens to lower edge of cylinder at top, 62.52 inches. Inside diameter of this cylinder 6.29 inches.

8

Thanks for helping keep history alive, if you have any questions or comments please contact us at blm_or_yh_education@blm.gov