Abstract: The self adjusting pipe wrench includes a movable jaw that is spring urged to its closed position with respect to its fixed jaw. A lock element holds the movable jaw in a open, fixed position until it is disengaged from the movable jaw, whereupon the movable jaw moves into engagement with a nut, or the like, or to its closed position. A housing is located about the path of movement of the leg of the movable jaw and extends between the lock element and the joke of a handle to maintain the lock element out of force-bearing relationship with respect to the yoke.

Abstract: A foot-mounted roller skate includes front and rear roller assemblies pivotable about upright axes. The rollers are hemispherical in shape and resilient pads are positioned on opposite sides of the roller support brackets to restrain the pivoting of the rollers out of alignment with the foot support platform.

Abstract: Apparatus to progressively spiral wrap a sheet about a longitudinally axially elongated generally cylindrical object comprises:(a) a frame including a beam member extending in the general direction of said object axis, and at a higher elevation than said axis,(b) a head carried by the beam for displacement therealong,(c) support structure carried by the head to support a sheet roll to rotate about another axis angled from horizontal and to directionally feed the sheet toward and into parallel and close tangency to the object, in a skew feed direction relative to the object axis, whereby as the object is rotated about its axis and said head is displaced along the frame member the sheet unwinds from the sheet roll and becomes progressively spirally wrapped about the object.