A power miter saw includes a rotatable table on a base; a saw blade and motor mechanism; and two linear guide mechanisms each interconnecting the table and the saw blade and motor mechanism. The linear guide mechanism is provided with a first link, a spring biased second link pivotably secured to the first link, a fastener for fastening the second link and the positioning seat together; a projection on the first link; and a latch pivotably secured onto the second link and including first and second slots. In a first locked position, the second slot is placed on the projection. In a second locked position, the first slot is placed on the projection.

A sawmill 1 has an operator end 6, a pair of end frames 2, a track 3 elevated by and extending from at least one end frame to the other, a carriage moveable 4 to carry a saw 5 along at least part of the track, flip elements able to move the saw from a horizontal cutting orientation to a vertical cutting orientation, and a relocatable stopper 13 associated with the track. The carriage 4 can be driven away from the operator end 16 with the saw 5 in the horizontal cutting orientation to contact the stopper 13 when the carriage, this resulting in the flip elements automatically moving the saw 4 into the vertical cutting orientation.

To provide a cutting machine that suppresses swinging of the cutting portion when the battery pack is attached or detached, the cutting machine includes a cutting portion, a base, and a swing support mechanism. The cutting portion includes: a motor, a motor housing accommodating the motor, an output shaft configured to be rotated upon rotation of the motor, a battery pack serving as a power source of the motor, and a battery pack attaching portion including a pair of rail portions with which the battery pack is engageable, where a cutting blade is configured to be detachably attached to the output shaft. The base has a contact surface on which a workpiece is configured to be placed. The swing support mechanism is connected to the base and the cutting portion and includes a swing shaft extending in parallel to the output shaft. The swing support mechanism supporting the cutting portion such that the cutting portion is swingable about the swing shaft between a top dead center and a bottom dead center in a direction parallel to a side surface of the cutting blade. The pair of rail portions extend in a direction crossing the side surface of the cutting blade.

To provide a cutting machine that suppresses swinging of the cutting portion when the battery pack is attached or detached, the cutting machine includes a cutting portion, a base, and a swing support mechanism. The cutting portion includes: a motor, a motor housing accommodating the motor, an output shaft configured to be rotated upon rotation of the motor, a battery pack serving as a power source of the motor, and a battery pack attaching portion including a pair of rail portions with which the battery pack is engageable, where a cutting blade is configured to be detachably attached to the output shaft. The base has a contact surface on which a workpiece is configured to be placed. The swing support mechanism is connected to the base and the cutting portion and includes a swing shaft extending in parallel to the output shaft. The swing support mechanism supporting the cutting portion such that the cutting portion is swingable about the swing shaft between a top dead center and a bottom dead center in a direction parallel to a side surface of the cutting blade. The pair of rail portions extend in a direction crossing the side surface of the cutting blade.

A sawmill includes a four-stroke internal combustion engine having an output shaft for driving a sawblade. The output shaft has a longitudinal axis. The engine is mounted on the sawmill for rotation between a first operative position with the longitudinal axis of the output shaft extending at a first angle, and a second operative position with the longitudinal axis of the output shaft extending at a second angle transversely to the first angle. The engine has fuel injection to facilitate operation in the first and second operative positions and a lubrication system incorporating a wet sump. An oil pick up for the lubrication system is configured to pick up oil from the wet sump at both the first and second operative positions.

A motorized saw assembly includes a base assembly having a workpiece support surface which defines a workpiece surface plane, an upper support assembly configured to support a saw blade, and a hinge assembly including a first linkage assembly and a second linkage assembly. The upper support assembly is configured to move between a first position, whereat the first linkage assembly and the second linkage assembly extend substantially perpendicular to the workpiece surface plane, and a second position, whereat the first linkage assembly and the second linkage assembly extend over the workpiece support surface.

A saw machine system includes a modular saw machine and a plurality of saw machine implements, wherein the modular saw machine is selectively coupled to the saw machine implements to transform one type of saw machine to another saw machine. By selectively coupling the modular saw machine to the saw machine implement, the saw machine system becomes one of a portable hand-held saw machine, a fixed cutting-head saw machine, and a cutting-head guide-by-rail saw machine.

An articulated chop saw mast section (30) replaces a rigid prior art mast section (22) between a chop saw base (20) and a chop saw swing arm assembly (23). The articulation of mast section (30) provides a front-to-rear longitudinal movement of the swing arm assembly (23) along an axis that is parallel to the longitudinal axis of a chop saw cutting wheel (26), ultimately providing front-to-rear movement of the cutting wheel (26) along its longitudinal axis. The movement of wheel (26) in this fashion provides a means for optimum adjustment to the geometric relationship between wheel (26) and the material to be cut. The ability of the articulated mast to achieve optimum cutting geometry offers greater cutting efficiency by reducing the point or points of contact between wheel (26) and the material's specific profile.

A combined reflex and laser sighting device is provided. In one aspect, the reflex sight and one or more laser elements are coaligned, such that both the reflex sight and the laser sight can be sighted in or boresighted to a weapon together in a single operation. In another aspect, one or more laser elements are mounted within a laser bench and aligned with a reflex sight attached to the laser bench. In yet another aspect, a plurality of laser elements are provided within the laser bench and are coaligned with each other and the reflex sight. In another aspect, a mounting block with yielding vertical and horizontal webs is provided to allow windage and elevation adjustments to be made to the reflex sight and laser elements together. In still another aspect, an elevation macro-adjustment mechanism is provided to provide a simple adjustment that that realign the sight to a weapon to accommodate different shooting scenarios, such as different velocity rounds, different target distances, and elevational differences of the shooter's vantage point.

To provide a cutting machine that suppresses swinging of the cutting portion when the battery pack is attached or detached, the cutting machine includes a cutting portion, a base, and a swing support mechanism. The cutting portion includes: a motor, a motor housing accommodating the motor, an output shaft configured to be rotated upon rotation of the motor, a battery pack serving as a power source of the motor, and a battery pack attaching portion including a pair of rail portions with which the battery pack is engageable, where a cutting blade is configured to be detachably attached to the output shaft. The base has a contact surface on which a workpiece is configured to be placed. The swing support mechanism is connected to the base and the cutting portion and includes a swing shaft extending in parallel to the output shaft. The swing support mechanism supporting the cutting portion such that the cutting portion is swingable about the swing shaft between a top dead center and a bottom dead center in a direction parallel to a side surface of the cutting blade. The pair of rail portions extend in a direction crossing the side surface of the cutting blade.