US 4,067,429 A · Selector system for a printing head for printing office machines

Abstract

A selector system for a printing head for use in printing machines and the like for selecting a character to be printed from the printing head. The system comprises at least two actuatable code bars. The printing head is positioned with respect to a first coordinate by the use of a selector lever having a set of pivot elements thereon each defining a pivot axis about which the selection lever pivots a preselected amount. In response to the actuation of the code bars, the pivot element about which the selector lever pivots is selected by two stop members each pivotable in response to the actuation of one of the code bars and each engageable with one of two pivot elements, a third stop member engaged with a third pivot element and not pivoting in response to the actuation of any of the code bars and a fourth stop member engaged with a fourth pivot element and pivotable in response to the actuation of either of the two code bars.

Claims17

Dependent claims

A selector system for a printing head for use in printing machines and the like for selecting a character to be printed from the printing head, said system comprising:

at least two actuatable code bars;
means for effecting the positioning of the printing head with respect to a first coordinate comprising a first selector lever having a set of pivot elements thereon each defining a pivot axis about which the first selector lever pivots a preselected amount;
and
means responsive to the actuation of the code bars for selecting the pivot element about which the first selector lever pivots, comprising a first group of stop members each movable in response to the actuation of one of the code bars to engage one of a corresponding number of pivot elements, a second group of stop members each engaged with one of a corresponding number of pivot elements different from those associated with the first group and not movable in response to the actuation of any of the code bars and a third group of stop members each engageable with one of a corresponding number of pivot elements different from those associated with the first and second groups and pivotable in response to the actuation of either of at least two of the code bars.

1 more element

A selector system for a printing head for use in printing machines and the like for selecting a character to be printed from the printing head, said system comprising:

at least two actuatable code bars;
means for effecting the positioning of the printing head with respect to a first coordinate comprising a selector lever having a set of pivot elements thereon each defining a pivot axis about which the selector lever pivots a preselected amount;
and
means responsive to the actuation of the code bars for selecting the pivot element about which the selector lever pivots, comprising a first group of stop members each movable in response to the actuation of one of the code bars and each engageable with one of a corresponding number of pivot elements;
actuating means for effecting the pivoting of the selector lever about one of the pivot elements comprising an input element connected to the selector lever and shiftable by a predetermined amount, and wherein the system further includes an output element connected to the selector lever and movable through a given stroke, an intermediate lever connecting the output element to the printing head and means mounting the intermediate lever to have two different strokes for each said given stroke of the output element in response to the actuation of the code bars, said mounting means including a change-over element and a movable support for selectively arresting the change-over element and means controlled by the actuating means to coordinate the movement of the change-over element with that of the input element and the selector lever.

2 more elements

Dependencies are inferred from the claim text.

Selector system for a printing head for printing office machines

Life of this patent

Selector system for a printing head for printing office machines

Life of this patent

Abstract

Claims17