[TheForge] Power hammer question.

Wed Jan 29 16:41:00 2003

> I "think" I have a pretty good handle on the valving for a self
> contained power hammer....How do you keep the ram piston from
> turning?

My Alldays & Onions has a flat on the ram.  A tranverse boring that
intersects the ram bore has a wedge in it and a tapered bar passes
through that.  Adjusting nuts on either end of the bar tracks the bar
along the wedge and presses it more or less tightly against the flat
of the ram.  The bar has a piece of 1/4" brass (company docs say "gun
metal") on the friction face attached with countersunk flathead
screws.

> I was afraid something like machined flats was the case, something I
> don't have the equipment to duplicate...

Er, oh. :-)

- Mike

-- 
Michael Spencer                  Nova Scotia, Canada 

[email protected]            
http://home.tallships.ca/mspencer/