Patent 1,021,343 · Tingley's Locking Clamp · Page 3
a circular series of teeth, each disk being secured non-rotatively in one of said cylindrical portions, one disk being movable toward and from the other, springs normally pressing the movable disk toward the other, and a key for pressing the movable disk away from the other.
    7. A robe clamp comprising a pair of jaws having cylindrical bearing portions a disk having a circular series of teeth and fixed in one cylindrical portion, a second disk having a circular series of teeth mounted to move longitudinally but not rotatively in the
cylindrical portion of the other jaw and having a cam surface, means for yieldingly pressing the movable disk toward the other, and a key for acting on said cam surface to withdraw the movable disk from the other one.
    In testimony whereof I affix my signature in presence of two witnesses.
LEONARD C. TINGLEY.
Witnesses:
    HOWARD E. BARLOW,
    E. I. OGDEN.