arch head

noun

, Machinery.

1. a vertical, arc-shaped member fixed to the end of a walking beam, for supporting a chain from which a pump rod or the like is suspended in such a way as to let it rise and fall vertically.

Example Sentences

It is divided into four lights, and the arch-head is filled with good simple tracery.

From Project Gutenberg

A chain from the piston-rod to the arch head, as described in the single-acting engine, would fail to transmit this force.

From Project Gutenberg

But the arch head has a natural organism, which separates its ornament into distinct families, broadly definable.

From Project Gutenberg