P. Carter of Ware, Massachusetts patented a simple lathe parer with
a disc slicer in 1856. A flat piece of metal oriented across the base
forces the blade against the apple. The shaft has no threads and one
might think it would be difficult to use; however, the disc slicer
to advance the apple at a steady pace (Thornton 1991, p. 44). The
Carter has an unusual first class lever paring arm apparatus.
Resistance is felt at the paring head. The paring arm's L-shaped structure
plate applies the force needed to keep the paring arm firmly against
the apple by pushing on a small right angle bend at the end of the
paring arm apparatus.