I got my second 101 just a few days ago. I found an old thread here from a month or so ago, that covered among other things knee levers, and related electrical connections, and it left me with some questions.
References were made in that thread that the earliest controllers were in the machine itself, later ones were mounted on the right side of the cabinet, and the latest machines had a Bakelite foot controller mounted on the right side with linkage to a knee lever. I have examples of the last two methods, in a model 66 in a #40, and a 15-91 in a Queen Anne.
But, now I’ve come across something different in the 101.
The machine is 1929 by serial number, and it is in a #40 cabinet. The light and motor wiring looks original, in that it is cloth-covered (with the braided, flexible wire shield tubes), the factory-crimped terminal wire ends are wrapped in thread to prevent unraveling,. The length of the wires reaches down to the bottom of the backside of the cabinet, where there is a double wire clamp, and below it a Singer 3-prong connector, screwed into the bottom edge of the cabinet back.
Here’s where I get confused, the controller wiring for my 101 leads from the 3-prong connector, using the same type wiring and wire protection tube and clamps as the motor and light. It runs over to the right side of the cabinet and terminates in a Mercury Electric #705 knee controller, which is actually just a foot controller with a knee lever riveted to the foot lever.
I can find no evidence of any other device ever having been attached to the right side of the cabinet. Is it possible that this is the original controller, and if not, what other controller might the machine have had?