On Dec 13, 9:33*am, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:
" fired this volley in news:cc5a1ba4-
:

I can not see well enough to tell, but I think the handle turns the
roller.

The hand crank turns an offset crank arm on the roller. *The link pin
creates the offset, and carries the torque from the hand crank to the
crank arm. *'Tis a weak point of possible failure, methinks; but it
allows the mechanism to work, which it could not if the link were
attached directly to one side or the other of the hand crank. *If the pin
is stout enough, it would be strong enough -- it just doesn't look very
big.

LLoyd

The top roller looks a lot like one of the commercial rollers I have
in my junk pile(shop!). The two powered rollers are of similar size,
but must be made by the operator. The rest appear to be welded up. I
wonder if I have enough junk to make one? Might be an interesting way
of recycling metal.

Anyone else see the old steam tractor in the background? Watch the
roller sequence and look at the back wall.

Paul