> At least one Auto-Typist pump is providing vacuum for an automatic
> instrument: Fresno, California organ man Tom DeLay installed one in
> his 3-rank Photoplayer.

Auto-typist pumps were also used in Berry Wood instruments.  The
orchestrions with pipes in fact used two separate pumps, one for
pressure.  They were mounted  parallel to each other and shared one
drive shaft. A very poor design indicating the Berry Wood used more
'off the shelf' components than they designed and developed.

S. K. Goodman