from The Century Dictionary and Cyclopedia
- n. A metal plate attached to any surface to prevent abrasion or resist friction.
- n. A plate used in connection with a clamp to check the recoil of a gun-carriage.
Sorry, no etymologies found.
In this case the collar gives with the spindle, which latter has the necessary play in the long footstep; and as the collar and friction-plate are one, it is brought back to its normal place by centrifugal force.
The friction-plate a, on the top of the wharf carries the flier, and on its upper surface is in contact with the inverted cup, a, which is attached to the spindle by a pin or screw.