Abstract: A mechanical pencil has a tubular member having a front end and a rear end. A slide member is disposed at the front end of the tubular member for axial sliding movement therein. The slide member has a lead passageway for receiving a pencil lead. A lead advancement mechanism undergoes axial movement within the tubular member and has a chuck body for undergoing advancing movement to advance the pencil lead through the lead passageway of the slide member and toward the front end of the tubular member and for undergoing retracting movement toward the rear end of the tubular member. The slide member is disposed in frictional engagement with the chuck body for retracting movement therewith.

Abstract: There is provided a mechanical pencil which permits an effective use of a residual lead which is left in a front end of the pencil. The pencil has a tubular shaft having at its front portion a slide member which has a passage for a writing lead, and a lead advancement mechanism axially slidably disposed in the tubular shaft. The slide member and at least one element of the lead advancement mechanism are co-acted and interlocked with each other. This structure permits a favorable feeling of writing and an effective use of the writing lead.