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Webster 1913 Edition

Noun.

An instrument of iron, with sharp prongs, attached to a boot or shoe to enable the wearer to walk securely upon ice; a creeper.

Kane.

clamper ‎(plural clampers)

One who, or that which, clamps.
If you park your car in a no-parking zone, watch out for clampers.
An attachment with sharp metal prongs, attached to a boot or shoe to enable the wearer to walk securely upon ice.
- Elisha Kane
  Both divisions are provided with clampers, to steady them and their sledges on the irregular ice-surfaces […]
(electronics) A circuit that restricts the amplitude of a waveform.