Abstract: An adjustment mechanism for a tool includes a first shroud pivotally attached to a first jaw of the tool and having a trough-shaped first body with a first gap and a first side section with a first aperture. A second shroud is pivotally attached to a second jaw and has a trough-shaped second body with a second gap and a second side section. An arm is pivotally attached to the first and second shrouds, disposed in the first and second gaps, and has a slot aligned with the first aperture and communicating with both a periphery and a pin mount of the arm. Rotatably mounted in the pin mount is a pin with a threaded aperture aligned with the slot. An adjustment screw passes through the first aperture and the slot and engages the threaded aperture. The screw head has a distal bearing surface restrained by the first side section.

Abstract: A PEX crimping tool includes four rigid links pivotally coupled together in a modified four-bar linkage arrangement. The first link has a first jaw with semicircular work face, a first handle and an elongated slot between the jaw and handle. The second link is pivotally connected with the first link at a first pivot and includes a second jaw with semicircular work face. The third link is pivotally connected with the second link at a second pivot and includes a second handle remote from the second pivot. The fourth link has a first end pivotally connected to the third link at a third pivot and includes a second end connected to the first rigid link so as to swing and move with respect to the first link about a fourth pivot movable along the elongated slot. The tools are designed to crimp ASTM F 1807 rings.

Abstract: A ratchet tool has a first jaw member pivotally mounted on a first handle. An elongate linkage has a first end pivotally mounted on a second handle and a second end pivotally connected with a second jaw member on the first jaw member. The second jaw member includes a plurality of ratchet teeth. A pawl is pivotally mounted on the second end of the second handle along with the elongate linkage. The pawl has first and second sets of ratchet teeth alternatively engageable with the second jaw member teeth by a pivotally mounted spring and a rotatable actuator with cams that can be rotated into over center positions with respect to the spring and held there by the spring and a stop engaged by the actuator.

Abstract: A hand-held ratchet tool has first and second elongated handles with free first ends and second ends pivotally coupled together. A first jaw member is pivotally mounted on the second end of the first handle. An elongate linkage has a first end pivotally mounted on the second end of the second handle and a second end pivotally connected with a second jaw member on the first jaw member. The second jaw member includes a plurality of ratchet teeth. A pawl is pivotally mounted on the second end of the second handle along with the elongate linkage. The pawl has first and second sets of ratchet teeth alternatively engageable with the second jaw member teeth by means of a pivotally mounted spring member and a rotatable actuator with cams that can be rotated into over center positions with respect to the spring member and held there by the spring member and a stop engaged by the actuator.

Abstract: A cutting tool having a work piece feed mechanism includes a first jaw and a second jaw connected together for pivotal movement between a closed position and an open position. The work piece feed mechanism includes first and second ratchet members as well as a slide member adapted to engage a work piece and mounted for movement between a fully extended position and a fully retracted position. Movement of the first and second jaws from the closed position to the open position causes the first ratchet member to operably engage the slide member and incrementally advance the slide member toward the fully retracted position. Movement of the first and second jaws from the open position to the closed position causes the second ratchet member to operably engage the slide member to restrain the slide member from movement toward the fully extended position.

Abstract: A cutting tool capable of cutting work pieces which are thicker than what comparably-sized conventional cutting tools are capable of cutting has a jaw with a cutting edge which does not completely abut or overlap over the full length of an opposing edge of a second jaw when the cutting tool is in its closed position. A resulting gap between the opposing edges varies from a maximum at the free end of the cutting edges to zero at a portion of the opposing edges where the edges abut one another. The cutting tool successively notches a work piece, and as the notch deepens, the work piece is advanced toward the abutting portion of the cutting edge and the opposing edge until it is finally severed. The jaws may be operated manually by hand levers or driven by hydraulic, pneumatic or electrical drive mechanisms.

Abstract: A cutting tool capable of cutting work pieces which are thicker than what comparably-sized conventional cutting tools are capable of cutting has a jaw with a cutting edge which does not completely abut or overlap over the full length of an opposing edge of a second jaw when the cutting tool is in its closed position. A resulting gap between the opposing edges varies from a maximum at the free end of the cutting edges to zero at a portion of the opposing edges where the edges abut one another. The cutting tool successively notches a work piece, and as the notch deepens, the work piece is advanced toward the abutting portion of the cutting edge and the opposing edge until it is finally severed. The jaws may be operated manually by hand levers or driven by hydraulic, pneumatic or electrical drive mechanisms.

Abstract: A hand-held, ratchet action tool closes together a pair of jaws. A first jaw is fixed in position. A second jaw includes a plurality of ratchet teeth and is mounted to pivot with respect to the first jaw. The ratchet tool further includes a linkage of four links operatively coupled together and with a motorized drive mechanism. A first pawl is supported on one of the links so as to be engageable with the teeth of the second jaw. The linkage is configured to convert drive motion from the drive mechanism into oscillatory motion of the pawl along the teeth. The first pawl is arranged to drive the working face of the second jaw towards that of the first jaw during the oscillatory motion. A second pawl engages with the teeth to permit the first pawl to be ratcheted back and forth, closing the second jaw on the first jaw. A selector lever is provided to manually disengage the pawls and to permit reopening of the jaws.