Old Style 10 x 15- Part fell from press and press is not turning over

Hey all,

I hope that someone can at least point me in the right direction on this.

Mid-run just a a few minutes ago a piece literally fell from the press and clanked on the floor. At first I thought it was maybe one of the rear nuts or bolts from the treadle mechanism, but it wasn’t.

I’ve attached a picture of the piece that fell. It is about 4 inches long and has a half of a hole/notch on one side only.

When I try to turn the press over the rollers get to around the bottom of the inkplate and then the whole back of the press kind of falls back rather than turn over.

Anyone with a clue on this?


image: Piece.jpg


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Looks like a shaft key for a gear or the flywheel — there is a slot on the shaft and a matching slot in the bore of the gear. Check the drive shaft spur gear (on the shaft with the treadle hooked to it) and the flywheel both. There may be other gears that are keyed to their shafts but these are the two I remember.


Thanks for the advice Bob. Right after I posted this I did realize that it is the pinion key. I am going to look into one of the keys with the L shape just to prevent this from happening again but I tapped it back in and all is working ok!