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| Heiland Research (HR) solenoids | |
| Author | Message |
|---|---|
| Les Joined: 09 May 2001 Posts: 2682 |  Posted: Wed Oct 11, 2006 2:10 amDoes anybody have a Heiland solenoid with patent numbers on it? I'm having an... er... discussion about who invented what solenoid. He referenced the patent numbers off an HR and I don't remember ever seeing patent numbers on an HR solenoid. Graflex solenoid yet, but not an HR. |
| jdman Joined: 13 May 2001 Posts: 302 | Posted: Wed Oct 11, 2006 3:56 am I have one Pat. 2161855 but very hard to read at my age. Russ |
| jdman Joined: 13 May 2001 Posts: 302 | Posted: Wed Oct 11, 2006 4:10 am one on e-bay for 129.00 now along with some discussion on who invented the solenoid. something about 1936. Russ |
| Top Joined: 06 Apr 2002 Posts: 198 | Posted: Wed Oct 11, 2006 1:27 pm Patent # on the box is 2161355. The same # is stamped on the gizmo as well. Top (and yes, I have a few NIB) <font size=-1>[ This Message was edited by: Top on 2006-10-11 06:31 ]</font> |
| Les Joined: 09 May 2001 Posts: 2682 | Posted: Wed Oct 11, 2006 2:28 pm Yeah I'm in the shuttle diplomat behind the scenes of that ebay auction. That patent number was filed in '37 and issued in '39 and also shows up on the Graflex solenoid. While I don't think Irving Jacobson had anything to do with the HR solenoid, I'm trying to find proof that royalties might have something to do with his patent on Sidney O. Lindahl's solenoid. Les |
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