{HEAD ~ This increase} in tension is effective to rotate the film cassette 30 in {TAIL ~ a clockwise direction} into the position shown in FIG 2 thereby causing the protruding portion 38 of the film cassette 30 to engage and move the pin 86 and the bell crank 76 in a counterclockwise direction about the pin 78 
{ HEAD ~ This increase } in tension is effective to rotate the film cassette 30 in { TAIL ~ a clockwise direction } into the position shown in FIG 2 thereby causing the protruding portion 38 of the film cassette 30 to engage and move the pin 86 and the bell crank 76 in a counterclockwise direction about the pin 78
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