FIG. 40. ANOTHER USE OF SWIVEL JOINT, SHOWING POSSIBILITIES OF THIS FORM.
Still another variation in this form of swivel has the two main parts made to fit one within the other and a snap ring is placed in a groove in the male portion of the joint, this groove being deep enough to take the entire thickness of the ring. The two parts are then fitted together and the ring snaps out into a corresponding groove in the female portion of the joint, uniting the two parts. This joint gives a fairly free movement to the parts thereof, but has the disadvantage that it cannot be taken apart without breaking one of its parts.
FIG. 41. OPERATOR CLEANING TRIM OF DOOR WITH SWIVEL JOINT.
FIG. 42. SWIVEL JOINT, WITH SCREWED UNION.
FIG. 43. SWIVEL JOINT HAVING BALL BEARINGS.