NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Brad Morris
Date: 2014 Jan 19, 12:52 -0500
Don
Thank you!
Is there any chance at the "Patent Greatest Angle Clamp" paperwork. Undoubtedly a UK patent but there is no associated patent number with this one. The patentees will be the same as 17840, if that's any help.
Brad
Stan wrote: In an earlier message I said that Bill's site said the "endless tangent screw" patent was in 1909. I now also note from the site that I might have misinterpreted that. Heath may have applied for the patent in 1909 but did not receive it until March 1910. It was patent no. 17840. Does your sextant actually say "Patent 17840" on it? Mine simply says "Patent" on the tag on the front of the clamp mechanism and on the back of it.
Attached is Heath's patent.Don Seltzer
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Attached File:
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