skerpningsdon at motorkedjesag for skerpning of sagkedjans tender

摘要

A mounting bracket is arranged to be attached to the bar of a chain saw and supports a sharpening element holder through the medium of a head secured laterally to the bracket. The sharpening elements are mounted on the underside of the holder, and a pivotal guide rail is mounted on the holder for directing the cutter elements of the chain properly into the sharpening elements. The holder has auxiliary guide portions arranged for engagement by a depth gauge portion of the cutter elements to take the impact off the latter as they move toward the sharpening elements. The sharpening elements are shaped to sharpen cutter elements having inside surfaces and are arranged symmetrically to sharpen oppositely facing cutter elements. A brake, comprising a pair of friction rollers arranged to clamp against opposite sides of the chain to control the speed of the chain, may be supported on the mounting bracket.