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also includes {HEAD ~ a rotary knife} which is actuated as {TAIL ~ a trailing end portion} of the exposed film is being withdrawn from the film cassette so as to sever the film which was wound upon the take up reel from its attachment to the film cassettes spool 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includes { HEAD ~ a rotary knife } which is actuated as { TAIL ~ a trailing end portion } of the exposed film is being withdrawn from the film cassette so as to sever the film which was wound upon the take up reel from its attachment to the film cassettes spool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