A measurement structure is adapted for a curtain cutting machine, and the curtain cutting machine contains: a track, a slidable seat, a scale set, a cutting device, and a covering cover. The track includes a front segment and a rear segment, and the slidable seat is disposed on and slides along the track and includes a clamping apparatus. The scale set is secured on the track to indicate a position of the slidable seat, the cutting device is located adjacent to the front segment of the track and includes an opening, and the covering door is mounted between the cutting device and the track and moves between a first position and a second position. When the covering door slides to the first position, it stops the opening of the cutting device, and when the covering door slides to the second position, it opens the opening of the cutting device.

A cutter for cutting a formed gutter discharged from a seamless gutter machine. The cutter may be positioned to cut a back wall of a formed gutter below a front upper edge of a front wall of the gutter. In turn, a gutter may be mounted to a building (e.g., a fascia board thereof) to achieve additional lift, thereby providing increased pitch over a given length of gutter while maintaining overlap between a gutter apron and a back upper edge of the back wall of the formed gutter.

A cutter for cutting a formed gutter discharged from a seamless gutter machine. The cutter may be positioned to cut a back wall of a formed gutter below a front upper edge of a front wall of the gutter. In turn, a gutter may be mounted to a building (e.g., a fascia board thereof) to achieve additional lift, thereby providing increased pitch over a given length of gutter while maintaining overlap between a gutter apron and a back upper edge of the back wall of the formed gutter.

A power shear tool includes a housing portion, a motor positioned within the housing portion, and a tool head portion extending from the housing portion and including a blade rotatable relative to the tool head portion. The power shear tool includes a workpiece support member positioned proximate the tool head portion. The workpiece support member includes a top surface and a bottom surface opposite the top surface, side surfaces extending between the top and the bottom surfaces, a first channel defined in the top surface and extending from at least one of the side surfaces, and a second channel defined in the top surface. The second channel intersects the first channel and extends transverse to the first channel.

An impact cutoff device for a progressive high speed cold former having a low mass rigid cutter carriage, a torsion spring for carriage return, and an articulated, oil lubricated and dampened carriage drive block on a pivoting drive lever serving to reduce impact induced vibration otherwise leading to fatigue failure and wear of the various cutter parts and consequent loss of cutoff accuracy and quality.

An impact cutoff device for a progressive high speed cold former having a low mass rigid cutter carriage, a torsion spring for carriage return, and an articulated, oil lubricated and dampened carriage drive block on a pivoting drive lever serving to reduce impact induced vibration otherwise leading to fatigue failure and wear of the various cutter parts and consequent loss of cutoff accuracy and quality.

A shearing tool for shearing a strut channel includes a housing, a drive casing coupled to the housing, an output movable along a longitudinal axis relative to the drive casing between an extended position and a retracted position, and a die. The die includes a front face, a rear face opposite the front face, and a cutout extending through the front and rear faces, the cutout configured to receive the strut channel therethrough. A die retaining mechanism is movable between a locked configuration, in which the die retaining mechanism couples the die to the output for movement therewith between the extended position and the retracted position, and an unlocked configuration, in which the die is removable from the drive casing. The die retaining mechanism is movable from the locked configuration to the unlocked configuration without the use of tools.

A shearing tool for shearing a strut channel includes a housing, a drive casing coupled to the housing, an output movable along a longitudinal axis relative to the drive casing between an extended position and a retracted position, and a die. The die includes a front face, a rear face opposite the front face, and a cutout extending through the front and rear faces, the cutout configured to receive the strut channel therethrough. A die retaining mechanism is movable between a locked configuration, in which the die retaining mechanism couples the die to the output for movement therewith between the extended position and the retracted position, and an unlocked configuration, in which the die is removable from the drive casing. The die retaining mechanism is movable from the locked configuration to the unlocked configuration without the use of tools.

A cutting machine for cutting a window covering includes a machine base and a cutting device provided on the machined base. The machine base includes a sustaining face for putting the window covering thereon. The cutting device includes a frame provided on the machine base, a cutter, a movable block, a stopping block and a connecting bar. The control bar is pivoted on the frame and controllable to pivotally swing and drive the cutter to move up and down. The movable block is moved along with the cutter to drive the connecting bar to pivotally swing relative to the frame. The stopping block is adapted to abut against one end of the window covering to be cut and is further driven by the connecting bar to reciprocate along the machine base.

A cutting machine for cutting a window covering includes a machine base and a cutting device provided on the machined base. The machine base includes a sustaining face for putting the window covering thereon. The cutting device includes a frame provided on the machine base, a cutter, a movable block, a stopping block and a connecting bar. The control bar is pivoted on the frame and controllable to pivotally swing and drive the cutter to move up and down. The movable block is moved along with the cutter to drive the connecting bar to pivotally swing relative to the frame. The stopping block is adapted to abut against one end of the window covering to be cut and is further driven by the connecting bar to reciprocate along the machine base.