FYI, I recently acquired this pile of metal from a local ebay seller.
Vintage Signal Corps US Army Printer TG-7-B Teletype Corp Printer Parts/Repair | eBay


I got it to keep it from the landfill & maybe harvest some bits & pieces before recycling what's unneeded. Let me know if you see anything that might be useful to you & we'll arrange a deal. You can see how much I have invested in this item (LOL).

I've not checked anything out beyond the following: It's a pulling magnet unit.  The motor turns by hand but just barely (I may want to keep that, though).  I may need to keep the dashpot.  The sound deadening pads are mostly missing & the rest are going to trash.  No glass.  I need to clean & examine the gears to see if they're chewed up (presently there's so much dirty grease I cannot be sure).

Wayne 
WB4OGM