Safety mechanism in an automatic engraving assembly

Details Safety mechanism in an automatic engraving assembly Safety mechanism in an automatic engraving assembly

2006-08-24

2010-02-02

Culler, Jill E (Department: 2854)

Typewriting machines

Typing to produce embossed character

By type-die mounted on carrier movable for selection of...

C408S110000, C408S202000, C101S038100, C033S018100

Reexamination Certificate

active

07654759

ABSTRACT:
A safety mechanism includes multiple positioning recesses defined in a bottom face of the head of the adjusting sleeve, a stop received in one of the positioning recesses, a slot defined in a top face of the body, an urging spring received in the slot, and a urging ball partially received in the slot and urged by the urging spring. Therefore, rotation of the adjusting sleeve relative to the body is limited due to engagement between the urging ball and the stop which is received in one of the positioning recesses and separation between the adjusting sleeve and the body is avoided.

REFERENCES:
patent: 1705957 (1929-03-01), Braren
patent: 2710549 (1955-06-01), Cogsdill
patent: 3384965 (1968-05-01), Sicking
patent: 4507026 (1985-03-01), Lund
patent: 5380132 (1995-01-01), Parks
patent: 6543971 (2003-04-01), Mawhinney
patent: 6834434 (2004-12-01), Nelson

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