Central the new design was electric motor
which turned the main shaft means bevelled friction
g
wheels.
The reproducer and recorder diaphragms were mounted together in
the form pair spectacles. Much the third
floor the main building was taken with the continuing
development the phonograph: newly hired chemist, Jonas W.
Aylsworth, worked developing chemical substances for the
cylinders; adjoining room English experimenter called
Gladestone tried improve the output the battery;
Wangemann experimented recording music one end the
floor, surrounded piano, several different phonographs,
and sometimes four piece orchestra; and Edison, assisted
by the chemist Franz Schulzeberge, applied himself the
.IV- 6
December 1887 drew heavily several features patented for the
tinfoil machine. needle the recorder cut
a groove into the soft wax cylinder and, after recording, the
spectacle frame was then turned bring the reproducer stylus
onto the surface the cylinder.
Intensive research and development the phonograph
began the new laboratory 1888 Edison switched the
resources his lab into the phonograph. The cylinder was fitted onto one end the
main shaft, and the other end lead screw moved the
traveler arm which pushed the reproducer along the cylinder. The fragile reproducer
consisted diaphragm made gold beater's skin (or animal
membrane) which was connected curved steel wire serving as
the stylus
