Looking For Scale Clamshell Bucket Plans

[Finster]

I had a Tonka clamshell crane as a kid and like Frizzen said it barely worked. At least that's what I remember. Anyway here is a different design that MIGHT be more reliable.
http://www.alansmeccano.org/models/triang.htm

Hope this helps.

[9W Monighan]

When I get a chance I can scan some stuff from my extensive crane literature collection. Or PM me with an email.