Pistol barrel mounting structure

Claim 1

A GUN INCLUDING A BODY, A BARREL MOVABLY MOUNTED TO SAID BODY, A BUSHING DISPOSED ABOUT AND POSITIONING SAID BARREL TOWARD THE MUZZLE END THEREOF, AND MEANS MOUNTING SAID BARREL FOR SLIGHT UPWARD AND DOWNWARD SWINGING MOVEMENT OF THE BREECH END THEREOF RELATIVE TO SAID BUSHING AND ABOUT ESSENTIALLY AN AXIS EXTENDING TRANSVERSELY OF SAID BUSHING AT ESENTIALLY THE LOCATION THEREOF. SAID BUSHING HAVING A FIRST BUSHING SURFACE POSITIONED TO ENGAGE AND EMBRACE THE UNDERSIDE, OF SAID BARREL AT A LOCATION FORWARDLY OF SAID AXIS, AND HAVING A SECOND BUSHING SURFACE POSITIONED TO ENGAGE AND EMBRACE THE UPPER SIDE OF SAID BARREL AT A LOCATION REARWARDLY OF SAID AXIS, SAID SURFACES BEING POSITIONED FOR MOVEMENT OF SAID BARREL INTO LOCATING ENGAGEMENT WITH BOTH OF SAID SURFACES BY SIDE SLIGHT UPWARD SWINGING MOVEMENT OF THE BREECH END OF THE BARREL, AND FOR MOVEMENT OF THE BARREL OUT OF SAID LOCATING ENGAGEMENT WITH BOTH OF SAID SURFACES BY SAID SLIGHT DOWNWARD SWINGING MOVEMENT OF THE BREECH END OF THE BARREL, SAID FIRST BUSHING SURFACE EXTENDING REARWARDLY SUBSTANTIALLY TO A TRANSVERSE PLANE CONTAINING SAID AXIS AND SAID SECOND BUSHING SURFACE EXTENDING FORWARDLY SUBSTANTIALLY TO THE SAME TRANSVERSE PLANE TO CONFINE THE BARREL BETWEEN TEH EXREMITIES OF SAID SURFACES DURING SAID PIVOTAL MOVEMENT.