Automatic lead supply apparatus for plotter

Details Automatic lead supply apparatus for plotter Automatic lead supply apparatus for plotter

1991-07-05

1994-09-27

Grimley, A. T.

Recorders

Markers and/or driving means therefor

Stylus feature

346139R, G01D 1516

Patent

active

053510720

ABSTRACT:
When a pen holder of a drawing head of an automatic lead supply apparatus is raised and lowered, and a knocking pipe of a pencil holder held by the pen holder strikes or is pressed against a knocking plate in order to repeatedly raise and lower the knocking pipe, a lead contained in the pencil holder is fed to a front end of the pencil holder. Before the lead feeding operation, a controller functions to finely oscillate the drawing head in order to prevent the lead from clogging the knocking pipe. As a result, a single lead will be properly and reliably guided to a lead chucking mechanism.

REFERENCES:
patent: 4905016 (1990-02-01), Kobayashi
patent: 4991300 (1991-02-01), Takahashi
patent: 5150525 (1992-09-01), Iai

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