Yikes, Ian, will look it up later. Sounds like another machine to stay well clear of.
The scary part of the old two row corn chipper was sharpening the damned blades. They ran on the circumference
of a pair of parallel disks, about 18" long flat steel blades. To sharpen, climb up on the slick steel sides, one foot on
a tire, no foodholds, of course, undo a couple of wing nuts and open the door to whirling hell. Then flip over a two track
wire guide spanning the opening with a round axe sharpening stone bonded to a guide that runs on the two wires, about
1/4" diam rods, really.
Fingers CAREFULLY back on the handle, push the stone across the opening, as the blades blur by, throwing sparks.
Repeat a few times, then swing the stone and guide back to the side, and carefully close the Door to Hell, and tighten
up the wing nuts. Count your fingers and congratulate yourself on surviving another blade sharpening.
Kjnda like this one, but this is PTO driven, and we had no tractors nearly powerful enough to drive them with the
PTO, so they had their own 100hp motor on board. That raised up the chipper higher and meant you had to climb
up to get to it. Towed like an offset trailer, and the other tractor "flew formation" picking up the silage from your
chute. Long, long ago. Tiny and wimpy compared to that machine that waco makes, or the cedar eater. It'd still
take off a hand in a heartbeat.