Hinge pin locks

A hinge pin-lock comprising an elongated member and a sleeve member having one end blocked and adapted to releasably receive a portion of said elongated member, said elongated member defining a shaft terminating at one end in an enlarged annular head, said shaft defining a second head, said second head being disposed on shaft forward of said first head, said sleeve member having a depth about equal to the distance on said shaft from head to head and defining a substantially toroidal base portion, a side of said base portion being elongated and defining a substantially conically shaped protrusion, said base member being operative to slidably engage a portion of said elongated member, the distal end of said head adapted to abut said closed end of said sleeve whereby movement of said member is arrested.