LumberJocks

Machine mods, oddities, and fix-ups #16: Pneumatic case clamp by Handy Manufacturing co.

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Blog entry by Loren posted 81 days ago 1166 reads 0 times favorited 5 comments Add to Favorites Watch
« Part 15: Making replacement metal parts for vintage machines Part 16 of Machine mods, oddities, and fix-ups series Part 17: SCMI stroke sander demo »

Model 43. Circa 1914-1957. I’d guess it’s on the later end of Handy Mfg.’s run.

-- http://lawoodworking.com



5 comments so far

View William Shelley's profile

William Shelley

103 posts in 102 days


#1 posted 81 days ago

You can figure out the clamping force exerted by that piston by multiplying the surface area of the piston by the air pressure… It looks like the bore of the piston might be around 9-10” or so… lets say 10” bore @ 120 PSI..

10in diameter / 2 = 5in radius,
3.14159 x (5×5) = 78.539 square inches surface area of piston
120 pounds per square inch x 78.539 square inches = 9424.68 pounds of force.

I bet if you were doing bent laminations, you could make your ‘moulds’ in two halves, put the lamination in the middle, chuck it in that press, and go crazy. the 4” stroke might be a limiting factor though but you could crank that wheel to pull the back cheek closer allowing the air cylinder to close it all up.

-- Woodworking from an engineer's perspective

View Loren's profile (online now)

Loren

7430 posts in 2280 days


#2 posted 81 days ago

That’s good to know. When I acquired the clamp I was excited
about using it for laminations. It may go farther than 4”... it just
hit the back jaw and stopped.

It was seized until yesterday and I just got the sprocket system
working again.

-- http://lawoodworking.com

View William Shelley's profile

William Shelley

103 posts in 102 days


#3 posted 81 days ago

Almost 5 tons, that’s a LOT of force. don’t put your hand in :) Good luck and I look forward to seeing what becomes of this.

-- Woodworking from an engineer's perspective

View Bob Current 's profile

Bob Current

313 posts in 250 days


#4 posted 80 days ago

Interesting machine, your collection is amazing.

-- When you are wrong admit it, when you are right forget it.

View Loren's profile (online now)

Loren

7430 posts in 2280 days


#5 posted 80 days ago

If you think I got it bad, this guy is out of his freaking mind:

http://www.owwm.net/

-- http://lawoodworking.com

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