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Old 01-29-2014, 04:36 PM
thx1138 thx1138 is offline
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Join Date: Jan 2012
Posts: 371
Originally Posted by GSM View Post
Hi thx1138.

I did not reply to your Double Coil Relay contribution because I was not sure why you had included it, and I was not going to make any assumptions.
Sorry, but I missed this one earlier. Remove the vertical magnet between the coils and what remains is a pivoting armature above two coils wound to have opposite polarities.

These devices actually exist and come from pay phones. The coils are triggered to direct the coin to the hopper or the return tray in the pay phone. So maybe LJH wasn't using ringer coils at all but one of these devices with the central magnet removed.
Antique Telephone History Website

Figure 1 at that page shows a drawing of the entire device and figures 2a, 2b, and 2c show that the magent should be easily removable.
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