Plate-plan′ing ma-chine′.
A machine designed for planing true edges and bevels on plates for boilers and for
iron ships.
In the machine illustrated, the plate is clamped upon a wooden bed, 14 feet long, by means of holding-down bolts
a a,
[
1739]
etc. The cutter-head is driven by a screw sliding on a pair of ways
b b, one above the other.
It is self-operating in feed, and has cutters which work each way. It bevels the edge and squares up a narrow calking surface.
Ships' plates may be planed before or after bending.
In the latter case the bed is curved to the form of the plate.