An apparatus configured to twist a first wire about a second wire is presented herein. The apparatus includes a securing mechanism configured to secure ends of the first wire and the second wire. The first wire is arranged parallel to the second wire along a longitudinal axis. The apparatus further includes a gripping mechanism configured to grip central portions of the first and second wires, a tensioning mechanism configured to apply a lateral offsetting force to the gripping mechanism, thereby deflecting the central portions of the first and second wires orthogonally from the longitudinal axis, and a rotating mechanism configured to rotate the gripping mechanism, thereby twisting the first and second wires about one another. A method of twisting a pair of wires is also presented.

A ply (16, 18) comprises metallic monofilaments (46′, 46″). Each monofilament (46′) of a first group has a positive torsional elastic deformation in a first direction about its main axis (G). Each monofilament (46″) of a second group has a negative torsional elastic deformation in a second direction about its main axis (G). The absolute value of the torsional elastic deformation C of each monofilament (46′, 46″) is such that |C|≤6 turns per ten metres. The mean S of the torsional elastic deformations of the monofilaments (46′, 46″) of the ply (16, 18) is such that −0.25 turn per ten metres≤S≤+0.25 turn per ten metres. The monofilaments (46′, 46″) are arranged next to one another so as to alternate one or more monofilaments (46′) of the first group with one or more monofilaments (46″) of the second group.

A ply (16, 18) comprises metallic monofilaments (46′, 46″). Each monofilament (46′) of a first group has a positive torsional elastic deformation in a first direction about its main axis (G). Each monofilament (46″) of a second group has a negative torsional elastic deformation in a second direction about its main axis (G). The absolute value of the torsional elastic deformation C of each monofilament (46′, 46″) is such that |C|≤6 turns per ten metres. The mean S of the torsional elastic deformations of the monofilaments (46′, 46″) of the ply (16, 18) is such that −0.25 turn per ten metres≤S≤+0.25 turn per ten metres. The monofilaments (46′, 46″) are arranged next to one another so as to alternate one or more monofilaments (46′) of the first group with one or more monofilaments (46″) of the second group.

A tool includes: a main body includes an output section provided on a front end portion in a longitudinal direction and accommodating a driving unit for driving the output section therein; a gripping unit provided on a lower surface side of the main body; a first hook attachment unit located on an upper surface side of the main body and to allows a hook opened at one side attached; and a second hook attachment unit located on a side surface side of the main body and allows the hook attached. The hook is attached to the first hook attachment unit so that an opening of the hook faces the front side in the longitudinal direction of the main body. The hook is attached to the second hook attachment unit so that the opening of the hook faces the lower side in an upper-lower direction.

A tool includes: a main body includes an output section provided on a front end portion in a longitudinal direction and accommodating a driving unit for driving the output section therein; a gripping unit provided on a lower surface side of the main body; a first hook attachment unit located on an upper surface side of the main body and to allows a hook opened at one side attached; and a second hook attachment unit located on a side surface side of the main body and allows the hook attached. The hook is attached to the first hook attachment unit so that an opening of the hook faces the front side in the longitudinal direction of the main body. The hook is attached to the second hook attachment unit so that the opening of the hook faces the lower side in an upper-lower direction.

A method of twisting a pair of wires includes the steps of arranging a first wire parallel to a second wire along a longitudinal axis, securing ends of the first and second wires, and gripping outer surfaces of central portions of the first and second wires. Inner surfaces of the central portions of the first and second wires are in contact with one another. The method further includes the step of rotating the central portions of the first and second wires, thereby twisting the first and second wires about one another.

A method of twisting a pair of wires includes the steps of arranging a first wire parallel to a second wire along a longitudinal axis, securing ends of the first and second wires, and gripping outer surfaces of central portions of the first and second wires. Inner surfaces of the central portions of the first and second wires are in contact with one another. The method further includes the step of rotating the central portions of the first and second wires, thereby twisting the first and second wires about one another.

An electric wire twisting device is provided, which is capable of producing a preferable twisted electric wire from a plurality of electric wires of which both ends are cut. An electric wire twisting device 1 includes a first gripping device 11 including a first clamp 2a that grips a first end of a first electric wire CT, a second clamp 2b that grips a first end of a second electric wire C2, and a first holder 15A that holds the first clamp 2a and the second clamp 2b. The electric wire twisting device 1 includes a second gripping device 12 that grips a second end of the first electric wire CT and a second end of the second electric wire CT, a first revolving actuator 3b that causes the first holder 15A to rotate around a center line of revolution CL, and a first rotating actuator 3a that causes the first clamp 2a and the second clamp 2b to rotate around a center line of rotation that is parallel to the center line of revolution CL or is inclined with respect to the center line of revolution CL.

An electric wire twisting device is provided, which is capable of producing a preferable twisted electric wire from a plurality of electric wires of which both ends are cut. An electric wire twisting device 1 includes a first gripping device 11 including a first clamp 2a that grips a first end of a first electric wire CT, a second clamp 2b that grips a first end of a second electric wire C2, and a first holder 15A that holds the first clamp 2a and the second clamp 2b. The electric wire twisting device 1 includes a second gripping device 12 that grips a second end of the first electric wire CT and a second end of the second electric wire CT, a first revolving actuator 3b that causes the first holder 15A to rotate around a center line of revolution CL, and a first rotating actuator 3a that causes the first clamp 2a and the second clamp 2b to rotate around a center line of rotation that is parallel to the center line of revolution CL or is inclined with respect to the center line of revolution CL.

An electric power tool disclosed herein may include an actuator; a control unit; and a main switch. When the main power is on, the control unit may be capable of executing at least one sequence operation in which the actuator is operated according to a predetermined sequence. When the operation to switch the main power from on to off is performed on the main switch during execution of the at least one sequence operation: the main power may be kept on and electric power supply to the actuator may be continued until the at least one sequence operation under execution is completed; and the electric power supply to the actuator may be cut off and the main power may be switched from on to off after the at least one sequence operation under execution has been completed.