Abstract: A mechanically controlled writing apparatus with presharpened pencil lead elements generally comprises of an inner cylinder and a pen-holder. The inner cylinder is a straight hollow tube, having two elongated piercing grooves vertically made at the bottom to permit the bottom end be slightly expanded for passing therethrough of pencil lead elements, and a plurality of wedge-like projections made on the outer wall surface at the bottom end and respectively reducing upward, which wedge-like projections may be squeezed inward by the inner wall surface of the outer pen-holder to firmly retain the bottom pencil lead element for smooth writing. The pen-holder comprises a reduced bottom end having a hook means integrally made thereon to alternatively insert through the two elongated piercing grooves into the inner cylinder, which hook means may be controlled to displace outward through a lever motion effect.

Abstract: A lead-replaceable writing implement including an outer tube, an inner rod received in the outer tube and formed with multiple lead channels and a push rod, a rotary tube partially inserted into a lower end of the outer tube, and a lead holder received in the rotary tube and partially protruded beyond the lower end thereof, wherein the multiple lead channels respectively contain several series of leads of different hardness, and the rotary tube is formed with a lead stop whereby when rotating the rotary tube to locate the lead stop right above a lead channel and then push the inner rod upward, the lead stop will stop a lowest lead with desired hardness from rising and drop the stopped lead into the lead holder, and when thereafter pressing the inner rod downward, the push rod thereof will partially protrude the dropped lead beyond the lead holder for writing.

Abstract: A useful writing implement which comprises an outer casing and an inner tube inserted into the outer casing for storing a plurality of presharpened leads. The outer casing has an intregrally formed protrudent flexible elongated reduced neck portion for releasably engaging an upper enlarged portion of the inner tube. The neck portion is integrally formed with a lateral triangular flat protrustion for partially covering the upper enlarged portion of the inner tube for preventing the presharpened leads from slipping out of the inner tube. The outer casing is integrally formed with a dependent leg for insertion into a longitudianl slot provided at the lower end of the inner tube, the leg being integrally formed with an inward hook-shaped portion which will be forced to extend into the slot and slide on a longitudinal slide side wall provided at the upper end of the slot, to allow the leads to fall down when the inner tube is moved downward.

Abstract: This invention relates to a writing implement comprising an outer casing, a coil spring disposed within the casing, an inner tube inserted through the coil spring and having a plurality of presharpened pieces of pencil lead stored therewithin, and a capping member fitted over the open end of the inner tube. The lower (writing) portion of the inner tube is split into two clamping halves. The lower end of the coil spring is formed into a hook which slides along the slot formed between the clamping halves to allow the expelling and feeding of presharpened pieces of pencil lead into the space between said two clamping halves.

Abstract: This invention relates to a writing implement comprising an outer casing, a coil spring disposed within the casing, an inner tube inserted through the coil spring and having a plurality of presharpened pieces of pencil lead stored therewithin, and a capping member fitted over the open end of the inner tube. The lower (writing) portion of the inner tube is split into two clamping halves. The lower end of the coil spring is formed into a hook which slides along the slot formed between the clamping halves to allow the expelling and feeding of presharpened pieces of pencil lead into the space between said two clamping halves.

Abstract: This invention relates to a writing implement comprising an outer casing, a coil spring disposed within the casing, an inner tube inserted through the coil spring and having a plurality of presharpened leads stored therewithin, and a capping member inserted over the open end of the inner tube. The front (writing) end of the inner tube is split into two clamping halves. The front end of the coil spring is formed into a hooked portion which slides along the slot formed between the clamping halves to allow the expelling and feeding of presharpened lead pieces into the clamping halves.