John McClelland found a handful of these cute cast metal valves
in someone's junk box in Texas.  Now they're in John's junk box in
California, still awaiting identification.  They look like little
Diesel locomotives; molded in the casting is "Patent Pending".

Viewed like a locomotive, the casting measures length 2.530",
width 1.065, height 1.340 to the top of the "smokestack".

The rear face is clamped against a wood manifold which supplies vacuum
to the lower chamber and provides a passage from the upper (valve)
chamber through the wood to a pneumatic.  Inside, at the far end of
the wood pouch block, is a bleed cup between the pouch chamber and the
vacuum chamber in the middle.  The visible hole in the wood block is
for the tracker bar connection.  The valve core assembly is reminiscent
of Standard Pneumatic valves.

The width of the casting is such that it would have been used in a
two-tier pneumatic action.  On one side you can see where the sprue has
been cut and filed, so it's either an elegant sand casting or else an
injection molding.  After painting they might make cute locomotives for
an HO scale model railroad.  See the pictures at
http://mmd.foxtail.com/Pictures/

Robbie Rhodes
Etiwanda, CA