NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Goerz and Bumstead Sun Compasses
From: Gary LaPook
Date: 2007 Nov 05, 16:38 -0800
From: Gary LaPook
Date: 2007 Nov 05, 16:38 -0800
Her are some links to more information on the Bumstead compass.
gl
http://www.antarctic-circle.org/E02.htm
It was devised by Cartographer Bumstead in collaboration with George Washington Littlehales, chief engineer of the Naval Hydrographic Office, after Byrd requested something better for his purposes than the magnetic compass. The Bumstead-Littlehales sun compass, which contains a clock and a latitude adjustment, works on the principle that the compass direction of the sun at any time of day depends on the latitude and the sidereal time.
Go to page 80 in the following book.
http://books.google.com/books?id=LFw4neT2nxwC&pg=PA80&lpg=PA80&dq=bumstead+compass&source=web&ots=fHe2lGydul&sig=klJ3X2GKZ8_4Kio2hGl09SLGftU#PPA81,M1
--
You can buy a copy: http://bayarea.kijiji.com/c-For-sale-Other-Polar-Sun-Compass-W0QQAdIdZ28128489
glapook@PACBELL.NET wrote:
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
gl
http://www.antarctic-circle.org/E02.htm
It was devised by Cartographer Bumstead in collaboration with George Washington Littlehales, chief engineer of the Naval Hydrographic Office, after Byrd requested something better for his purposes than the magnetic compass. The Bumstead-Littlehales sun compass, which contains a clock and a latitude adjustment, works on the principle that the compass direction of the sun at any time of day depends on the latitude and the sidereal time.
Go to page 80 in the following book.
http://books.google.com/books?id=LFw4neT2nxwC&pg=PA80&lpg=PA80&dq=bumstead+compass&source=web&ots=fHe2lGydul&sig=klJ3X2GKZ8_4Kio2hGl09SLGftU#PPA81,M1
--
You can buy a copy: http://bayarea.kijiji.com/c-For-sale-Other-Polar-Sun-Compass-W0QQAdIdZ28128489
glapook@PACBELL.NET wrote:
I will attach the scans to the next post. gl On Nov 3, 10:16 pm, glap...@PACBELL.NET wrote:I have sever pages showing the Bumsted sun compass and I can scan them in on monday and post them. gl On Nov 3, 10:40 am, Wolfgang Köberer <koebe...@navigationsgeschichte.de> wrote:Robert,I assume that you are talking about about the Zeiss Ikon A.-G. Goerz-Werk "Sonnenkompass" It is described in the German Patent Nr. 474100 (issued 26.3.1929). If you do not have access to the patent I can send you a scan off list.Wolfgang -----Ursprüngliche Nachricht----- Von: NavList@fer3.com [mailto:NavList@fer3.com]Im Auftrag von Robert Eno Gesendet: Samstag, 3. November 2007 16:13 An: NavList@fer3.com Betreff: [NavList 3751] Goerz and Bumstead Sun CompassesHello fellow luminaries,Does anyone out there have any sources of information and/or photographs of the Goerz and Bumstead Sun Compasses?Robert
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---