NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Artificial Horizon, K & E USN No. 6
From: Alexandre Eremenko
Date: 2012 Nov 26, 09:20 -0500
From: Alexandre Eremenko
Date: 2012 Nov 26, 09:20 -0500
It is hard to believe that for filing the mercury the basin had to be inverted. I have another conjecture. That the upper portion of the jug served as a kind of funnel. Alex. > Hello: > > With help from a friend, here are some photos of AH. Since I last wrote, > I've found on-line more pictures of these devices, but none with a basin > having a threaded connection in the corner. The tip of the cone/jug is > missing, and the small threaded connection on the interior tip is > partially broken off. There is a fine hole in the broken tip/threaded > piece. > > I now believe the missing tip was a transition piece that allowed the jug > of fluid to be directly threaded to the basin. The basin has a 3/8 inch > bolt thread. The top of the jug where you see the plug is a 7/8 inch bolt > thread. > > I suspect the pouring process went something like this: 1. The jug was > removed from the carrying box and the missing transition piece was screwed > into the basin. 2. Plug removed. 3 . With the basin inverted , the basin > was screwed onto the transition piece with jug. 4. Then the entire unit > was inverted with the Hg flowing into the basin. After CN work > completed, the HG was poured back into the jug. Note how the cone can be > inverted so it acts as a funnel for the fluid going into the jug. The > corner of the basin has the pouring spout. Maybe?? Pretty simple and > neat!? > > A friend has access to a machine shop and I'll have a brass transition > piece machined. I would love to know how the original top piece and any > other components looked. I've given up looking online and maybe I'll > contact the RPI library in Troy NY. Maybe they have some old Gurley > catalogs. > > Has anyone ever used something like this? Thoughts? > > > Bruce > ---------------------------------------------------------------- > NavList message boards and member settings: www.fer3.com/NavList > Members may optionally receive posts by email. > To cancel email delivery, send a message to NoMail[at]fer3.com > ---------------------------------------------------------------- > > > > Attached File: http://fer3.com/arc/img/121212.artificial-horizon-0554.jpg > > Attached File: http://fer3.com/arc/img/121212.artificial-horizon-0555.jpg > > Attached File: http://fer3.com/arc/img/121212.artificial-horizon-0557.jpg > > Attached File: http://fer3.com/arc/img/121212.artificial-horizon-0559.jpg > > Attached File: http://fer3.com/arc/img/121212.artificial-horizon-0560.jpg > > > : http://fer3.com/arc/m2.aspx?i=121212 > > >