Mop with quickly removable head

Claim 1

A MOP INCLUDING A TUBULAR HANDLE HAVING AT ONE END A TRANSVERSE MEMBER OF GENERALLY CHANNEL SHAPE IN CROSSSECTION AND EXTENDING BEYOND THE PERIPHERY OF SAID HANDLE, REINFORCING MEANS EXTENDING BETWEEN SAID TRANSVERSE MEMBER AND SAID HANDLE, A CARRIER LINK RECIPROCABLE WITHIN SAID HANDLE AND HAVING AN END PORTION THEREOF EXTENDING INTO SAID CHANNEL, A KEY FORMED ON SAID END PORTION, MEANS TO MOVE SAID KEY IN A PLANE GENERALLY PARALLEL TO THE SIDES OF SAID CHANNEL, A MOP HEAD HAVING AN ELONGATED BASE MEMBER AND AN ELONGATED TOP MEMBER, A MOP RAG CLAMPED BETWEEN SAID BASE AND TOP MEMBERS, A KEYWAY ON SAID HEAD FOR DETACHABLE LOCKING ENGAGEMENT WITH SAID KEY, PORTIONS OF SAID CHANNEL-SHAPED TRANSVERSE MEMBER BEING IN TIGHT ENGAGEMENT WITH PORTIONS OF SAID HEAD IN A RETRACTED POSITION OF SAID CARRIER AND KEY TO CLAMP SAID HEAD THEREAGAINST, AND RIB-LIKE MEANS ON SAID HEAD PROVIDING A RAISED ELONGATED RIDGE CLOSELY ADJACENT THE LEGS OF SAID CHANNEL TO PREVENT RELATIVE ROTATION OF SAID HEAD AND HANDLE.