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oted between and to said plates, the outer ends of the two cheek, pieces overlapping each other when closed against the parallel plates and forming a circle adapted to grip 5 a pipe, and a curved link pivoted to the' in. ner end of said handle and connected to one of the cheek pieces, in combination with a
spring attached to one of said plates, where- by when said handle is moved backward or forward said spring will cause one of said 10 cheek pieces to open or close. In testimony whereof I have signed my name to this specification. RICHARD DENNIE HILL.