Mechanical pencil with lead-feeding device operable by forward s

Details Mechanical pencil with lead-feeding device operable by forward s Mechanical pencil with lead-feeding device operable by forward s

1978-11-17

1980-06-03

Coven, Edward M.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 67, B43K 2116

Patent

active

042059240

ABSTRACT:
A lead-feeding mechanism comprising a lead reservoir, a connector, and a chuck in a mechanical pencil is held by a front spring in a normal rear position, at which the chuck is clamping a lead piece, but when a forward shake is imparted to the pencil, a weight collides forwardly with the lead-feeding mechanism and pushes the same forward, counter to the force of the spring, whereupon the chuck feeds the lead piece through a specific distance then releases the same, the lead-feeding mechanism being subsequently returned by the spring to the normal position, where the chuck again clamps the lead piece at a new position thereof.

REFERENCES:
patent: 2158991 (1939-05-01), Stenersen
patent: 2385329 (1945-09-01), Buchanan
patent: 2492839 (1949-12-01), Bovbaker
patent: 2561113 (1951-07-01), Hallberg

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