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Concurrent Indexing and Selection for Type Belt

IP.com Disclosure Number: IPCOM000093527D
Original Publication Date: 1967-Oct-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 80K

Publishing Venue

IBM

Related People

Hickerson, JE: AUTHOR

Abstract

The apparatus indexes home position of a type belt by incrementing the print hammer with concurrent character selection as printing proceeds from an initial margin location.

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Concurrent Indexing and Selection for Type Belt

The apparatus indexes home position of a type belt by incrementing the print hammer with concurrent character selection as printing proceeds from an initial margin location.

Type belt 1, drawing A, is carried by pulleys 2 and 3 each having two portions 2a, 2b and 3a, 3b respectively. Portions 2a and 3a are driven by character selection mechanism at 13. Portions 2b and 3b are driven by an indexing mechanism in drawing C, as shown in the chart at D. Selection mechanism 4 has input slides a, b, and c and provides output through gear e which is incorporated in a planetary assembly 5 in drawing C.

Movement of belt 1 to select a character for printing can be to either side of the current index printing position. Following selection and printing at a character position, escapement 6 drives external ratchet 7 one increment. Ratchet 7 rotates gear g which drives tape 8 through pulley connection 9 and tape anchor
10. Print hammer 11 is thus incremented to the next character printing position. Hammer 11 can be mounted on a belt for movement incrementally and can have an associated strike bar extending coextensively with the entire printed line and actuated against hammer 11 to effect printing. The indexing sequence for several index positions is illustrated at D. The side-to-side spacing of type on belt 1 is shown to be the same as the printing pitch, but can be different.

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