Jordan wrote:
On 2/26/2011 10:20 AM, Rich Grise wrote:
a "timing belt"
on a sewing machine?

Indeed. There's lots of high grade engineering in the humble sewing
machine. Timing these is very important. The oldest toothed belt I saw
was on an ancient Singer. It seemed to be made of string and wire.

Yep, you want to see a complex machine take a look at the older machines
with multiple stitch functions done mechanically. Timing belts, cams and
gear drives galore.

--
Steve W.