labouring at T.D. Cross...
 

...or at Bayliss-Wiley -

in the 1960 film "Saturday Night and Sunday Morning" the young protagonist, portrayed by Albert Finney, is seen at his work as he rectifies the races on cottered bottom bracket spindles. a supervisor passes by his station as he examines his finished parts. appears to have been filmed in an actual machine shop rather than at a made up set. gives a good glimpse of what a production facility looked like in this epoch.

http://www.imdb.com/title/tt0054269/?ref_=fn_tt_tt_1


http://www.youtube.com/watch?v=zJAeb0wiQjA

Ha-ha. :thumb: I run a T.D.C. track cog on my fixed gear bike, and it's the smoothest, quietest cog I own.

http://www.os2.dhs.org/~john/tdc-cog.jpg

FWIW, T.D.C. is still in business; just not the bicycle business. They make gears and such for heavy industrial equipment.