Music Trade Review -- © mbsi.org, arcade-museum.com -- digitized with support from namm.org
THE
MUSIC TRADE
REVIEW
Angelus
Diaphragm Pneumatics
produce a pliant, resilient touch like that of the
human fingers, and they enable the Angelus-pianist
to create tone. Also, the life of these pneumatics is
practically everlasting, as is attested by the following
Excerpt from Scientific American,
December, 1906:
"The recessed chamber is closed by a diaphragm of specially
tanned and very thin and flexible sheepskin, which is glued down
upon the face of the block in such a way as to provide an air-tight
inclosure, but yet allow the sheepskin to be sucked into the cavity,
or distended above it, by the alternate admission or expulsion of the
air into the pneumatic. By this arrangement the sheepskin is not
subjected to any sharp creasing or folding, and its life is indefinitely
prolonged.
"By way of testing the rapidity and durability of the diaphragm
pneumatic an ANGELUS player was recently installed in Wana-
maker's exhibition room in New York City and run continuously ten
hours a day for several months, during which period each of a dozen
of the diaphragm pneumatics was operated SEVENTY MILLION
times at an average speed of 600 strokes per minute without showing
at the end of that time any appreciable evidence of wear."
The Wilcox & White Company
MAKERS OF THE ANGELUS
MERIDEN, CONNECTICUT
THE PIONEER PIANO PLAYER