A drive transfer device comprising: a first rotating element having a
plurality of apertures therein; a second rotating element adjacent the
first rotating element; a plurality of transfer elements; and a control
element mounted for rotation with the first element and moveable with
respect to the first element between a first position in which the
control element holds the transfer elements in an engaged position where
the transfer elements extend through the apertures of the first rotating
element to engage with the second rotating element to urge them to rotate
together, and a second position where the transfer elements are moved and
held out of engagement with the second rotating element.