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Print Hammer Drive

IP.com Disclosure Number: IPCOM000090482D
Original Publication Date: 1969-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Wankmueller, G: AUTHOR

Abstract

Print hammers 1 are loosely pivoted on continuously rotating shaft 2 and can be magnetically coupled to the latter. The coupling process permits each print hammer 1 being optionally fired against the paper 3 to be printed, ribbon 4, and types 5. The latter are arranged on type carriers 6, e.g., chain, wheel, or roll. Each print hammer 1 is rigidly connected to yoke 7 carrying coil 8. Upon exciting coil 8, hammer 1, through magnetic flux, is moved by Shaft 2 in the direction of types 5. Elastic bar 9 serves as a shock absorber. Bolt 11, returning the fired hammer 1 to its original position, acts on yoke 7 through spring 10. The return motion is damped by elastic bar 12.

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Print Hammer Drive

Print hammers 1 are loosely pivoted on continuously rotating shaft 2 and can be magnetically coupled to the latter. The coupling process permits each print hammer 1 being optionally fired against the paper 3 to be printed, ribbon 4, and types 5. The latter are arranged on type carriers 6, e.g., chain, wheel, or roll. Each print hammer 1 is rigidly connected to yoke 7 carrying coil 8. Upon exciting coil 8, hammer 1, through magnetic flux, is moved by Shaft 2 in the direction of types 5. Elastic bar 9 serves as a shock absorber. Bolt 11, returning the fired hammer 1 to its original position, acts on yoke 7 through spring 10. The return motion is damped by elastic bar 12.

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