Pedersen 309 Bobbin case wires question

[Einherj]

I am doing some heavy maintenance on this Pedersen 309 outsole stitcher I got for cheap.

What are these wires going into the bobbin case? Are they for some kind of heater for the bobbin thread wax, or am I way off?

Thank you for your assistance.

[Constabulary]

don´t know for sure but could be a heating device for warming the waxed thread. But its just guessing.

 

EDIT:

Rapid E 317 is the same machine AFAIK - see manual page page 8.

Rapid E 317.pdf

Edited January 1 by Constabulary

[Einherj]

On 1/1/2026 at 7:39 AM, Constabulary said:

don´t know for sure but could be a heating device for warming the waxed thread. But its just guessing.

 

EDIT:

Rapid E 317 is the same machine AFAIK - see manual page page 8.

Rapid E 317.pdf 1.24 MB · 3 downloads

Thank you. I'm fairly sure it's for a heater then.

[Tastech]

You are correct , Its a heater for the wax pot . Modern threads come wax impregnated which makes the wax pot pretty much redundant . You can still get un-waxed thread but the right wax is hard to get . If you only use the machine intermittently for the odd repair then use the pre-waxed thread. If you are doing a large production run then heated wax is more economical in the long run . If you are going to use the pre-waxed thread get the braided polyester type because it is much more durable than the linen/flax type . While you are at it give the machine a good clean using kerosene and a paint brush . old wax can clog up the machine and makes parts sticky and not move properly . The rapid is a very good machine when it's working smooth.