Typewriter with improved case shift means

Details Typewriter with improved case shift means Typewriter with improved case shift means

1977-09-15

1980-05-27

Wright, Jr., Ernest T.

Typewriting machines

Case-shift mechanism

Multiple-shift mechanism

4002166, 4004342, 400685, 400693, B41J 1116

Patent

active

042047803

ABSTRACT:
In a typewriter of the kind having a carriage movable vertically relative to the type bar assembly to provide three cases of type, the carriage rests on a shift member slidable vertically in guides formed in the body of the typewriter and a spring acts between the body and the shift member biassing the shift member to an intermediate position. One shift key moves the shift member to a lowermost position, overcoming the spring bias, and a second shift key moves the shift member to an uppermost position, overcoming the weight of the carriage.

REFERENCES:
patent: 532153 (1895-01-01), Graham et al.
patent: 1013084 (1911-12-01), Westin
patent: 1098542 (1914-06-01), Wisner
patent: 1203683 (1916-11-01), Anderson
patent: 1412637 (1922-04-01), Uhlig
patent: 2692037 (1954-10-01), Reichert et al.
patent: 2692038 (1954-10-01), Winter
patent: 2705553 (1955-04-01), Thomson
patent: 3057449 (1962-10-01), Thomson

Affiliated with

Also associated with

Rating

Typewriter with improved case shift means does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Typewriter with improved case shift means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Typewriter with improved case shift means will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1117141