brake shoes are one sort of mechanical shoe--there are others. (and things other than shoes can need grease.)

late in life (mid thirties) i was enlighted--all the mechanical part names i knew for sewing machines were not specific to sewing machines.. Cams in sewing machines fuctioned just like 'overhead cams' in car engines. (and sewing machine cams were most often 'over head too!)

feed dogs.. ditto.
and drive belts in card feeders were changed and tensions almost identically to drive belts on sewing machined (and not to differently than fan drive belts.)--and most other motor/belt driven mechanism.

and cars (not that i really know much about cars. butth parts: clutches, brakes, bearing; generic, generic, generic!

I loved mechanics!
as a child, i used to annoy my mother and entertain myself by lying under her sewing machine (as she was sewing) to watch the drive (and gears, and ...) by the time i was 12 or so, i knew enough about the machine to help fix it when it jammed.


my other obsession