The apparatus also includes a rotary knife which is actuated as a trailing end portion of {HEAD ~ the exposed film} is being withdrawn from the film cassette so as to sever the film which was wound upon the take up reel from its attachment to {TAIL ~ the film} cassettes spool 
The apparatus also includes a rotary knife which is actuated as a trailing end portion of { HEAD ~ the exposed film } is being withdrawn from the film cassette so as to sever the film which was wound upon the take up reel from its attachment to { TAIL ~ the film } cassettes spool
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH