viewtopic.php?f=1&t=1061
I thought sure it was here...but no mention of DC found. I hope someone else can add to that info. It shows 5 patents on the back plate: May 9, 1906, May 35, 1915, Jan 16, 1917, Oct 29, 1918, and Nov 26, 1918.
Here are the post-cleanup pics:




here are thumbnail pics of the reel before cleanup showing the mechanism. Note that the reel did not work in reverse and that turned out to be because someone had put the main gear in 180 degrees off: that little tang is supposed to be the stop at the levelwind gear and the arm stops at the main spindle when mounted properly. When the button is thrown, a post goes through that hole and makes contact with the spool to serve as a "drag"....as with all metal on metal drag mechanisms, this one does not work with much authority:






