Hammer blow

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A blow with a hammer.
  2. 2
    A pounding of the rails by the driving wheels of a steam locomotive caused by the inertia of unbalanced parts.

    "The balancing of the engine is unusual, with the rotating masses fully balanced and 40 per cent of the reciprocating masses statically balanced by lead weights in the coupled wheels; the reciprocrating balance weights are in the same phase on both sides of the engine. This system saves balance weight and reduces the wheel hammer-blow."

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"The balancing of the engine is unusual, with the rotating masses fully balanced and 40 per cent of the reciprocating masses statically balanced by lead weights in the coupled wheels; the reciprocrating balance weights are in the same phase on both sides of the engine. This system saves balance weight and reduces the wheel hammer-blow."

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