Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to advance material
Patent
1988-08-01
1990-01-30
Apley, Richard J.
Coating implements with material supply
Solid material for rubbing contact or support therefor
Including means to advance material
401 80, B43K 2116
Patent
active
048969826
ABSTRACT:
A lead feed mechanism for a mechanical pencil, in which a lead protruded by a certain length from a lead protection pipe housed in a bottom member attached at the bottom of the pencil is fed together with the pipe, and which comprises a lead chuck which is split in plural parts along the axis of the pencil and whose bottom sections pinch the lead on its outside circumferential surface. A sleeve contains the lead chuck so as to urge the lead chuck upwards by an elastic member. The sleeve includes an engaging portion provided on the inside circumferential surface of the top portion of the sleeve and engaged with an engaging portion provided on the outside circumferential surface of a bottom bearer for a lead pipe in which a spare lead is housed. A frame is provided around the sleeve which is fitted on the bottom with a pushing member which bears by the open top of the frame an elastic member provided between the bottom bearer and the frame. A slider is fitted in a cylindrical fixed member fixed in the bottom member so that the slider can be slid by the action of an elastic member. The top of the slider is separated at a prescribed distance from the pushing member.
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patent: 4620811 (1986-11-01), Kageyama
Kageyama Hidehei
Mitsuya Yoshihide
Apley Richard J.
Bender David J.
Kotobuki & Co. Ltd.
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