Additional attachment for all types of key operated machines

Details Additional attachment for all types of key operated machines Additional attachment for all types of key operated machines

1979-05-08

1981-10-27

Sewell, Paul T.

Typewriting machines

Key-board or key lever-actuating mechanism

Including mechanism for activating keys

235146, B41J 508

Patent

active

042970440

ABSTRACT:
Additional attachment for key operated machines comprises a frame which covers the keyboard and which holds the desired entire number of symbols. The frame has the shape of a perforated plate which is fixed to the keyboard. Additional keys are located in the perforations of the plate and are in alignment with the keys of the key operated machine. The cover plate is placed in a detachable manner on the surface of the perforated plate. The cover plate is perforated in agreement with the perforations of the first plate and is equipped with the desired symbols.

REFERENCES:
patent: 630847 (1899-08-01), Bofinger
patent: 3747735 (1973-07-01), Frick
patent: 4020328 (1977-04-01), Bradam
patent: 4158130 (1979-06-01), Speraw et al.

Affiliated with

Also associated with

Rating

Additional attachment for all types of key operated machines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Additional attachment for all types of key operated machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Additional attachment for all types of key operated machines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-277538