Ratchet wrench for accommodating both English and metric-sized workpieces

DETAILED DESCRIPTION Accordingly, it is an object of this invention to provide a rachet-type wrench which is serviceable on either English-sized elements or similarly sized metric elements.
Another object is to provide for a relatively economical conversion from one size to a slighly different size in the manufacture of certain wrenches.
One more object is to foster the increased serviceability of a given size wrench so that it might be usable on nuts or the like which have a wider variation in external size than would otherwise be tolerable.
Still another object is to provide a technique for modifying existing cam-lock wrenches in order that their utility will be expanded.
These and other objects of the invention are accomplished in a cam-lock wrench by providing a planar bevel on the end of the cylindrical cams in such a wrench.
This permits the corners of oversized nuts to engage the planar bevel when the wrench is turned in the reverse direction and cause retraction of the cams.
This permits the oversized nut top slip into the opening between the cams.