Reciprocatory saw and more especially a jigsaw

摘要

A reciprocatory saw and in particular a jigsaw comprises a pitman with a chuck means arranged for the releasable clamping of a saw blade. The chuck means comprises a movably mounted chuck jaw arrangement able to be clamped laterally against the saw blade shank, a wedge element arrangement adjacent to and for cooperation with the chuck means, a first spring means whose spring force acts downwardly on the inserted saw blade and a second spring means whose spring force acts on the wedge element arrangement downward. The wedge element arrangement is connected with the chuck jaw arrangement in a manner for the transmission of rotary movement and from the outside and is able to be shifted between a bottom clamping position clamping the chuck jaw arrangement against the saw blade shank and a top release position freeing the chuck jaw arrangement. The wedge element arrangement assumes an angular position turned in relation to the clamping position and is seated on a stationary holding face. Furthermore there is a stationary abutment face associated with an abutment arrangement on the saw blade shank so that in the clamping position the abutment arrangement is held by the first spring means against the abutment face and in the turned release position of the wedge element arrangement and the chuck jaw arrangement the shank may be moved beyond the abutment face.