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Big fork mount from the '30s. Help with info?

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#1 Guest_**DONOTDELETE**_*

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Posted 20 October 2006 - 12:52 AM

Greetings--
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!
Clear Skies,
Uncle Bob
Fairfax, CA 94930

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  • 1207636-mount2.jpg


#2 Glassthrower

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Posted 20 October 2006 - 02:54 PM

Hi Bob,

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...

MikeG

#3 Don W

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Posted 20 October 2006 - 02:57 PM

Good idea.

#4 Guest_**DONOTDELETE**_*

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Posted 21 October 2006 - 06:16 PM

Thanks. I had posted to the mounts forum earlier, but have so far received no information.
Clear Skies,
Uncle Bob
Fairfax, CA

#5 Lew Chilton

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Posted 21 October 2006 - 08:13 PM

It looks to be a home-brew job. You might contact the local astronomy clubs, like the Eastbay Astronomical Society, and pass the picture among the club members, particularly the old-time telescope makers. Somebody might remember it.

#6 refractory

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Posted 21 October 2006 - 10:48 PM

I love the green- you don't see that much in astronomical equipment, except for some of the nastier fake reflectors being offered on ebay.

Jess Tauber


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