Abstract: A pipe wrench which is locked in adjustment by engagement of rack-like teeth on the stem portion of the movable jaw with similar teeth on a slidable member carried in a wide groove in a rocking sleeve. The wrench is adjustable with one hand by squeezing the sleeve and slider to disengage the teeth, then moving the jaw stem via a spur engageable with the finger. The major parts of the sleeve and slider may be made of welded steel stampings.

Abstract: An improved tree-pruning tool of the type known as a pole pruner, which features greatly reduced friction in operation. A cutting blade and an anvil are moved toward each other in a linear path. The blade is on top, so that the downward bending of the tree branch will tend to open the cut rather than to pinch the blade. Friction is further reduced by a novel cam-like engagement of the moving parts with a guide pin, which eliminates incidental lateral displacements of the cutting elements due to the geometry of the operating lever. The mechanism is simple, and may be made from stampings.