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880,630
the apertures of said loop and enlarged in ad- vance of .the loop to limit the movement therethrough in one direction, whereby the oscillation of the knob spindle will release the a dog from engagement with the notches and hold the same released and permit the swing- ing of the door.
a
In testimony whereof I affix my signature, in presence of two witnesses. ROBERT CLARK. Witnesses: J. M. PERRY, CHASE. CONNOLLY.