Pinman

The modern haberdasher has swallowed up the mercer, the draper, the skinner, among the ancient trades, and the hosier, the glover, the needlemaker, the pinman, and we know not how many more, among more modern trades.

Source: wiktionary

The second pinman, similarly equipped, also accompanies the surveyor, and relieves the first when the pins of the latter are used up.

Source: wiktionary

In substance, it was alleged that appellee and two other members of a switch crew were engaged in transferring cars from one switch track to another, and that as he was walking upon and near the end of the last car but one, the pinman, as he is designated in the testimony, without notice or warning uncoupled the last car and signaled the engineer to reverse the movement of the train, which was suddenly done, thus throwing appellee forward and off the car.

Source: wiktionary

Of course, we sent a bunch of pretty good pinmen to Berlin in 1936 for all-out bowling war.

Source: wiktionary