NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Can someone identify this
From: George Huxtable
Date: 2008 Nov 27, 10:48 -0000
From: George Huxtable
Date: 2008 Nov 27, 10:48 -0000
May I go back to the Zerbee FixFinder, discussed in Navlist 6509 and other postings, about which I wrote- It's a Zerbee "Fix Finder".Perhaps it's THE Zerbee Fix Finder. described in the US patent 2519532 , attached. It could be the prototype, perhaps the one-and-only, because it's labelled serial number 1; the invention of LouisB Zerbee, patent granted 1950. You can dial up the details in GooglePatents. ============================= Although the object itself is no longer on sale, I've been taking a closer look at the patent for this instrument, which has interested me, and wonder if anyone else has done the same. It's a VERY complex instrument, and whoever did the diagrams and the explanation has made a reasonable shot at it, in the circumstances. I think I am making sense of it until I get to the start of column 6, in the "mode of operation", which states - "... member 122 is adjusted to cause its carriage 123 to move into contact with member 118. Member 122 is then used in reading the angular position." I can't find 123 on any diagram, or any other reference to it in the text. Am I missing something simple, or is there an error in the text or the drawings? Should that reference to 123 really be to 120? If so, which points make contact, and how does the user detect that contact? This seems to be at the nub of the whole observation. Any ideas? George. contact George Huxtable, now at george@hux.me.uk or at +44 1865 820222 (from UK, 01865 820222) or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---