Automatic drafting instrument with stylographic pen

Details Automatic drafting instrument with stylographic pen Automatic drafting instrument with stylographic pen

1978-07-07

1979-10-30

Hayes, Monroe H.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346141, G01D 1516

Patent

active

041730208

ABSTRACT:
An automatic drafting instrument of the type supporting a plurality of stylographic pens above a drafting surface. The instrument includes a reciprocating mechanism for lowering the pens from an upper rest position to a lower drafting position in contact with the drafting surface. The device is characterized by a vertically actuable and pivotable sealing element which engages the writing pen tip in its rest position and is actuable vertically downwardly and pivotably away from the pen as it is lowered to the writing surface.

REFERENCES:
patent: 2963337 (1960-12-01), Spalek
patent: 3340541 (1967-09-01), Klassen et al.
patent: 3346869 (1967-10-01), Stone
patent: 3613248 (1971-10-01), McInnis
patent: 4081804 (1978-03-01), Breemen et al.
patent: 4097874 (1978-06-01), Anderka et al.
patent: 4106031 (1978-08-01), Jozat

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