G'day Jack,
Thanks for your comments - reckoned if anyone had tried to pin down Kirby's start in small engines, you'd be da man.
Technically correct (I guess), but Turner certainly used Derlin to describe their wheels in 1961.
Just so; what I was getting at was that the name just specifies a
material.
The 'engineering plastics', as they are now known, really came into widespread use through the 1950's, and were almost 'wonder materials' back then. Very cutting-edge stuff.
So, mentioning that Turner used Delrin became a selling point, i.e. that they were up at the leading edge of materials technology.
Edit: I should add that Delrin is still a current DuPont resin product line;
http://www.dupont.com.au/products-a...plastics/brands/delrin-acetal-resin.html The 'Kralastic' mentioned in the other Turner ad is a Uniroyal resin - that one's still around too.
