A saw chain holder with a bar mounted sharpener for sharpening a chain includes a base plate and a cover plate removably attachable to the base plate. The base plate has a first base side surface, an opposite second base side surface, a groove extending into the first base side surface, and a base recess extending into the second base side surface. The cover plate has a first cover side surface and an opposite second cover side surface. The cover plate is movable into an assembled state in which the first cover side surface abuts the first base side surface, the chain is movable along the groove between the base plate and the cover plate, and the bar mounted sharpener is mounted in the base recess, bears against the second cover side surface, and is positioned over the groove.

A saw chain holder for sharpening a chain with a bar mounted sharpener comprises a base plate and a cover plate removably attachable to the base plate. The base plate has a first base side surface, an opposite second base side surface, a groove extending into the first base side surface, and a base recess extending into the second base side surface. The cover plate has a first cover side surface, an opposite second cover side surface, and a cover recess extending into the second cover side surface. The cover plate is movable into an assembled state in which the first cover side surface abuts the first base side surface. The chain is movable along the groove between the base plate and the cover plate and the bar mounted sharpener is mounted in both the base recess and the cover recess and is positioned over the groove.

A saw chain holder for sharpening a chain with a bar mounted sharpener comprises a base plate and a cover plate removably attachable to the base plate. The base plate has a first base side surface, an opposite second base side surface, a groove extending into the first base side surface, and a base recess extending into the second base side surface. The cover plate has a first cover side surface, an opposite second cover side surface, and a cover recess extending into the second cover side surface. The cover plate is movable into an assembled state in which the first cover side surface abuts the first base side surface. The chain is movable along the groove between the base plate and the cover plate and the bar mounted sharpener is mounted in both the base recess and the cover recess and is positioned over the groove.

The invention relates to an automatic sharpener for cutting teeth of a chain-saw chain of the type that has links and cutting teeth comprising a depth gauge. The sharpener comprises a receiving region comprising a chain support that can receive a chain-saw chain of the above-mentioned type, a driving means allowing a preferably automatically regulated horizontal translation, forwards and in stages, of said chain-saw received in the receiving region, a sharpener means arranged so as to sharpen the cutting teeth at different sharpening angles, after each translation of a chain-saw chain, and a means for planing the depth gauge of a cutting tooth, the planing means and the sharpening means each comprising a flat file and a round file which are detachably secured in a file carrier.

A saw chain holder for sharpening a chain with a bar mounted sharpener comprises a base plate and a cover plate removably attachable to the base plate. The base plate has a first base side surface, an opposite second base side surface, a groove extending into the first base side surface, and a base recess extending into the second base side surface. The cover plate has a first cover side surface, an opposite second cover side surface, and a cover recess extending into the second cover side surface. The cover plate is movable into an assembled state in which the first cover side surface abuts the first base side surface. The chain is movable along the groove between the base plate and the cover plate and the bar mounted sharpener is mounted in both the base recess and the cover recess and is positioned over the groove.

A saw chain holder for sharpening a chain with a bar mounted sharpener comprises a base plate and a cover plate removably attachable to the base plate. The base plate has a first base side surface, an opposite second base side surface, a groove extending into the first base side surface, and a base recess extending into the second base side surface. The cover plate has a first cover side surface, an opposite second cover side surface, and a cover recess extending into the second cover side surface. The cover plate is movable into an assembled state in which the first cover side surface abuts the first base side surface. The chain is movable along the groove between the base plate and the cover plate and the bar mounted sharpener is mounted in both the base recess and the cover recess and is positioned over the groove.

An operator operates a throttle lever and by maximizing the extent of said operation, the drive state is initiated, and the crank shaft rotation rate R increases and reaches the maximal value (RC) thereof. Subsequently, the operator operates the dressing operation lever so as to be in a second state at elapsed time (t0) while keeping the extent of the throttle lever operation maximized. Because a microswitch is turned off, the crank shaft rotation rate (R) is controlled in a range of R1<R<R2. By placing the saw chain in contact with a grindstone fixed to the dressing operation lever simultaneously with said action, dressing work is performed. After the microswitch is turned off at elapsed time (t0), the output of an ignition coil is controlled cyclically by a control unit at a cycle (T1+T2) so as to be on (ignition) during period (T1) and off (flame off) during period (T2).

The invention relates to an automatic sharpener for cutting teeth of a chain-saw chain of the type that has links and cutting teeth comprising a depth gauge. The sharpener comprises a receiving region comprising a chain support that can receive a chain-saw chain of the above-mentioned type, a driving means allowing a preferably automatically regulated horizontal translation, forwards and in stages, of said chain-saw received in the receiving region, a sharpener means arranged so as to sharpen the cutting teeth at different sharpening angles, after each translation of a chain-saw chain, and a means for planing the depth gauge of a cutting tooth, the planing means and the sharpening means each comprising a flat file and a round file which are detachably secured in a file carrier.

The disclosure relates to a file for filing a saw tooth of a saw chain. The file includes a file body defining a circumferential direction and a circumference. The file body, in a cross section, has an unhewn guide surface and a file surface adjoining the unhewn guide surface in the circumferential direction. The unhewn guide surface extends over at least of the circumference in the cross section.

A cutting member of a saw chain has a cutting tooth and a cutting surface having at least one cutting edge. In a side view, looking in a sharpening direction, a first line connects an intersection between an upper edge of a roof section and the cutting surface to an intersection between an imaginary line, which extends parallel to the upper edge, and the cutting surface. A second line connects an intersection between the upper edge and an imaginary displacement of the cutting surface parallel to the contact surface at a position in which a tooth tip of the cutting tooth lies perpendicular to the running direction above a longitudinal center axis of the rearward bearing point, to a point of intersection between the imaginary line and the imaginary displacement of the cutting surface. The contact surface is aligned such that the first and second line extend in parallel.