The machine works with a rotary action – in other words the press is treadled by pressing the pedal up and down. The connecting rod attached to the foot pedal turns the big black flywheel which turns the big cogwheel inside the circular top casing. The cogwheel then turns the offset cam which powers the ram – this means the ram is constantly going up and down as long as the flywheel is turning so fingers need to be kept out of the way.
You adjust the height of the cut by turning the platen (check out the heavy duty thread) and locking it off with the big knurled screw on the side of the casing.
When the big flywheel is turning it sounds really cool – a very slight chatter of cog teeth, the whirr of the wheel and the sound of greased metal coming together and parting. It is almost silent.
It takes around 1/2 minute to stop turning after you stop treadling...
Kate, given that it looks like a prop from a Steampunk movie, I guess I was kinda looking for a Victorian sounding name, tho Thumper is pretty cool!