[TheForge] Manual shears and punches
Ries Niemi
rniemi at fidalgo.net
Fri Mar 11 18:38:34 EST 2005
There were a lot of manual shears and punches in the old days because
power was so expensive. Sure, you could have a steam engine, but that
was only worth it for a big, many man shop.
So the little guys used manual equipment.
One problem with this was the capacity was limited. 5 tons is a big
lever action punch, and 5 tons wont punch much of a hole. Same with
shears. Most old manual shears will only cut 1/8" flat bar, with a big
cheater bar. They did evolve a few compound actions on shears, to get
up to thicker stuff- I have a 1913 catalog showing a Buffalo manual
ironworker that will cut 2" square bar, but the 1913 price was $400. In
today's dollars that would be something like $7500, about what a
decent hydraulic ironworker would cost you.
Even a smaller Buffalo no.5, which would shear 6" x 5/8" or 1" round
bars, and punch a 3/4" hole, was $2600 in todays equivalent dollars.
Roper Whitney does still make some hand operated tools- the no. 20
punch will punch a 3/4" hole in 1/4" plate, and they make some hand
powered shears as well.
http://roperwhitney.com/index.cfm
But the coolest manual ironworkers still made are from Germany- Mubea
used to make them, but now they are sold in the USA by Glaser- Harry
Haake is the US rep, at 88-668-8427- I dont know if he stocks any of
these here or not, and they would not be cheap anyway, but they are
very cool-
http://img.photobucket.com/albums/v132/rniemi/glasershear.jpg
ries
More information about the TheForge
mailing list