Do not use oil on friction cylinder. If its action is not perfectly
smooth a little clear soap rubbed on its surface will properly correct
its action. The means used to produce the resistance is a simple
friction clutch, which takes instant hold at the commencement of the
stroke and retains the pressure till its completion, when it instantly
releases it precisely as in a boat. Quickly taken apart without
loosening any bolts or screws. Each machine is adjustable to any amount
of friction or resistance.