Do you have a Singer sewing machine with the Featherweight style Bakelite Foot Pedal? I’ve seen them on Model 15 machines, Featherweights (Model 221/222), Model 99 machines, Model 128 machines, 400 Series machines, and I’m sure there are others.
Unplug the machine immediately and if safe to do so, relocate the pedal to somewhere it won’t damage surrounding items.
(I use the sink or inside the oven (not heated up of course) For what to do if this happens, see the article I am currently writing entitled: What a Pile of ….
Singer sewing machines have a long and rich history, dating as far back as 1851.
Lots of people suggest throwing that foot out and replacing it with a new one, or a “more modern one”. Better still, keep your vintage machine paired with its original pedal and adjust it!!
These instructions will also show you how to get in and replace a damaged cord, or to take out the capacitor(s) to stop your machine from running on its own.
These beautiful machines have evolved over the years but are still standing the test of time, with some of the older models being highly sought after by collectors and sewing enthusiasts.