Big fork mount from the '30s. Help with info?
Posted 20 October 2006 - 12:52 AM
I am looking for information about this (see pic) fork mount, acquired in San Francisco. It is US mf'd, bears no casting numbers (because it has no castings). Welded steel construction. 2-7/16" RA shaft (big!). Not shown, a tube ring with an ID of 13.75". As pictured, it is riding on a dolly with levelling jacks. Mount has 4 3/4" bolt holes in the base for permanent mounting. Sidereal drive is by chain from a gearbox/motor 115vac mains. It's in pretty good shape, except for cosmetics. I plan to use it for my 12.5" newtonian. Any help in identification is greatly appreciated!
Fairfax, CA 94930
Posted 20 October 2006 - 02:54 PM
I don't know jack about that massive fork. But, I can suggest posting this over in the "Mounts" forum. Maybe PM some of the folks on CN who have or work at observatories.
Good luck and clear dark skies...
Posted 21 October 2006 - 06:16 PM
Posted 21 October 2006 - 08:13 PM
Posted 21 October 2006 - 10:48 PM