Abstract: The invention concerns a motor powered saw with a saw chain (2) and a guide bar (1), the rear portion of which is covered by a side cover (3) and during operation clamped with a certain clamping force between the side cover and a counter support on that side of the guide bar which is turned towards the motor, tensioning elements being provided for tensioning the saw chain by displacing the guide bar forwards, when the guide bar has been loosened by easing the clamping force, and elements for securing the guide bar in a new position.

Abstract: The invention concerns a motor powered saw with a saw chain (2) and a guide bar (1), the rear portion of which is covered by a side cover (3) and during operation clamped with a certain clamping force between the side cover and a counter support on that side of the guide bar which is turned towards the motor, tensioning elements being provided for tensioning the saw chain by displacing the guide bar forwards, when the guide bar has been loosened by easing the clamping force, and elements for securing the guide bar in a new position.

Abstract: A portable, combustion engine powered cutting or sawing machine comprises a rear part (1) with a motor housing (3) with a combustion engine (4), an engine block (5) with a crank house, and a front part (2) with an annular blade (30) and a blade holder (31). The blade is provided in/or adjacent to a center blade (37) of the machine. The engine block forms a central body in the machine, including portions of said body on both sides of said center plane, and the blade holder comprises a blade holder chassis (35), which is provided substantially on a first side of said center plane. The blade holder chassis is fixedly connected on one hand with the portion of the engine block, which is located on said first side of the center blade, and on the other hand with a portion which is located on a second, opposite side of the center plane.

Abstract: The invention relates to an apparatus in an engine-driven machine having a tool carrier for a rotary tool and having a splinter shield cover (20) for the tool, which cover houses a section of the tool and has a through-running fixture hole (27) for the cover in a bearing side wall.

Abstract: In a thread regulating wheel (F), a storage body (B) is rotatably mounted on a shaft (1) that can be rotated in a housing, and mutually oriented holding magnets (8, 9) mounted in the housing (G) and on the storage body (B) position the storage body (B). At least one oscillating body (K) movably arranged in relation to the storage body (B), linked by friction (R) thereto, is associated with the storage body (B) and acts as a damping mass (m).