.~.~> Ratio change gearing and nonratio change gearing
DEFINITION
Classification: 476/31
Plural friction gearing in series:
(under subclass 27) Subject matter wherein said second assembly of elements also includes parts transmitting rotary motion by surface friction of rolling contact. [figure] [caption] A drive reducer for a tape recorder accomplishes a large reduction from the surface speed of a motor-driven shaft to the surface speed of a drive element for advancing a tape media such as magnetic recording tape on a flat card. A cup-shaped element is fixed to a reducer shaft and positioned so that the inner surface to a
cylindrical outer wall engages the motor-driven shaft. An idler wheel freely rotatable on the reducer shaft is positioned radially inside the cup-shaped element and is formed of compressible material with a diameter large enough for compressibly engaging the motor-driven shaft and pressing it against the inner surface of the outer wall of the cup-shaped element. Rotation of the reducer shaft is transferred to the driven element preferably by a friction sleeve on the reducer shaft and a friction disk engaging the sleeve and turning a shaft supporting the driven element
