Abstract: An adjustable ratchet wrench has a housing carried by a handle. The housing has a generally cylindrical chamber which carries a disc which in turn supports three equidistantly spaced jaws. The mounting disc is connected to the handle by a ratchet assembly whose setting determines the direction in which the tool may be used to turn the nut or other workpiece. The housing also carries a cam disc that engages the jaws and opens and closes them depending upon the direction in which it is rotated. A second ratchet mechanism determines the direction in which the cam disc may be rotated with respect to the mounting disc so as to open and close the jaws.

Abstract: An adjustable wrench has a drive shaft adapted to be turned by a conventional ratchet wrench. A housing is mounted on the output end of the shaft and three equidistantly spaced jaws are mounted between the shaft and surrounding housing. Cam surfaces are on the jaws and inside of the housing so that housing rotation in one direction will open the jaws and in the other direction will close them. A ratchet mechanism connects the shaft to the housing.