A metal shearing tool demonstrating improved fatigue life having a body; an edge of the body having a first surface and a second surface; a cutting surface disposed between the first surface and the second surface. The edge has a substantial absence of finish marks substantially parallel with the cutting surface on all surfaces of the edge, and at least one of a curved profile surface and a radiused cutting surface.

A shearing apparatus includes a housing, a die within the housing, and a workpiece seat plate attached to the housing by a standoff. The die has a cutout which is positionable to align with a passageway through the housing. The workpiece seat plate is spaced from the housing by the standoff, and has a cutout which at least partially aligns with the passageway in the housing and the cutout in the die.

To provide a plate material cutting device of which thickness can be reduced and made compact. A plate material cutting device includes: a first cutting blade fixed to a housing; a second cutting blade that cuts plate material collaboratively with the first cutting blade; and a drive unit that causes the second cutting blade to reciprocally move with respect to the first cutting blade, wherein the drive unit includes: a shaft that is rotatable on a rotational axis; a first motor connected to one end portion of the shaft; a first mechanism that is capable of causing the second cutting blade to reciprocally move with respect to the first cutting blade in conjunction with rotation of the shaft on the rotational axis; and a second mechanism that is capable of supporting a load onto the shaft at a time of cutting plate material.

The application relates to a double acting demolition device according to one embodiment for demolishing structures. The device includes a first crushing jaw for crushing operation, a first cutting jaw for cutting operation, and a combination jaw. The first jaws are separate jaws. The combination jaw is attachable to the first cutting jaw for constructing a second crushing jaw and to the first crushing jaw for constructing a second cutting jaw. The second crushing jaw is used jointly with the first crushing jaw in crushing operation and the second cutting jaw is used jointly with the first cutting jaw in cutting operation. In crushing operation, the first crushing jaw rotates around a fulcrum other than that of the second cutting jaw in cutting operation.

The electromechanical vertical cutting shear (1) comprises an electric servomotor (4) combined with a gear reducer (5) at least one shaft (6) bearing one or more spools (7), at least one motion transmission means (8) which is connected to a guillotine (11), and a cutting system comprising at least a pair of knives (12). The electromechanical shear (1) comprises a pulley system (9) for every motion transmission means (8).

A powered threaded rod cutter includes first and second cutting dies, an electric motor, a planetary transmission positioned downstream of the motor, a drivetrain for converting a rotational output of the transmission to a pivoting movement of the first cutting die, and a clutch mechanism for redirecting torque from the motor away from a drivetrain and the first cutting die in response to the first cutting die seizing during a rod-cutting operation. The clutch mechanism includes a ring gear in the planetary transmission, and a spring that rotationally affixes the ring gear below a predetermined threshold of reaction torque through the drivetrain and permits rotation of the ring gear above the threshold.

The present disclosure provides a reversible cutting tool to cut a material such as sheet metal on a press brake. The reversible cutting tool is further comprised of a handle portion to grip and move the cutting tool, wheels to allow the cutting tool to slide along the press brake, a blade portion to cut the material, and an adjustable cutting mechanism. The adjustable cutting mechanism allows the reversible cutting tool to pivot and cut the material in two different directions, and also allows the cutting tool to be set in a third storage position. In a preferred embodiment, the adjustable cutting mechanism is comprised of a channel on an underside of the cutting portion, the channel configured to receive a plunger, the plunger to slide between two opposed cutting positions and a storage position.

A ring removal apparatus configured to remove a ring from a finger utilizing a first technique or a second technique. The first technique employs cutting the ring while the second technique utilizes elements to distort the shape of the ring achieve removal. The ring removal apparatus includes a cutting assembly wherein the cutting assembly has a void centrally located therein and an opening thereto. The void has a first blade member and a second blade member on opposing sides thereof. The first blade member includes a ring protrusion member operably secured thereto and in axial alignment with the first blade member. The second blade member is movable in a forwards-backwards motion and is moved via a hydraulic assembly. The hydraulic assembly includes a conventional hydraulic cylinder that is operated via an operational lever so as to provide the movement of the second blade member.

A cutting device to sever a cable or the like. The cutting device can be used to sever the cable or the like in relatively inaccessible locations, such as in the ocean. The cutting device can include one or more springs that can be loaded to facilitate the deployment of a cutting tool to sever the cable or the like. The cutting device can include a lever than can be rotated between a locked configuration impeding deployment of the cutting tool and an unlocked configuration permitting deployment of the cutting tool. A linkage can retain the lever in the locked configuration. The linkage can be compromised, permitting the movement of the lever into the unlocked configuration.

A pliers-type cutting tool having two tool legs which cross at a joint pin and are pivotable about an axis of rotation in a pivot plane with respect to one another. The tool legs form gripping portions on one side of the joint pin and a pliers mouth on the other side. Cutting of the pliers mouth pass into a position one over the other, at least radially on the outside, for the first time in a closing region. The cutting edges have in the position one over the other only in the closing region a particular free length on this central plane, and that over the free length a greatest opening width is present along an intermediate length on the central plane, and that the greatest opening width makes up a third or more of the total length of the cutting edges.