The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 1993
Filed:
Oct. 30, 1990
Isamu Takahashi, Tokyo, JP;
Mutoh Industries Ltd., Tokyo, JP;
Abstract
An automatic lead feeding apparatus is used in an automatic drafting machine adapted to exchange pencil holders between a line drawing head and a writing instrument stocker. The automatic lead feeding apparatus has a unit holder moving in a direction of approach and separation from the writing instrument stocker to take a writing instrument or pencil holder removably arranged on the stocker. In consequence, the pencil holder is exchanged between the writing instrument holder and a writing instrument holder of the stocker. A lead feeding reservoir-stocker has a plurality of lead reservoirs containing plural leads. The lead feeding reservoir-stocker is arranged above the travelling path of the writing instrument holder. Lead is fed one by one from the reservoir-stocker by a shutter placed under the stocker and the lead is pushed in the pencil holder by a predetermined distance by a lead pusher. The lead feeding reservoir-stocker and writing instrument stocker are able to be removed from the base of the automatic lead feeding apparatus.