Teleprinter assembly

Claim 1

In combination with a teleprinter of the type having a frame; a plurality of electromagnets mounted in the frame and arranged in two spaced parallel rows; an equal plurality of armatures pivotably mounted in the frame in two spaced parallel rows, each armature being associated with a corresponding electromagnet and individually movable from a non-printing position to a printing position in response to energization of the corresponding electromagnet; an equal plurality of print hammers arranged in a single row, one corresponding to each print position in a line, one print hammer being associated with each armature; and means responsive to movement of each individual armature for firing the associatd print hammer; and improved assembly of electromagnets and armatures characterized by: A. the electromagnets being arranged vertically beneath the printer frame in two horizontal rows, the electromagnets in the two rows being staggered so that the electromagnets in one row operate odd numbered print hammers in the row of hammers and the electromagnets in the other row operate even numbered print hammers; B. the armatures comprising pivoted arms mounted in the frame generally horizontally in two spaced parallel rows, each armature being mounted vertically beneath the associated electromagnet and having an operating end extending inwardly toward the center of the printer, the operating ends terminating in a common vertical plane midway between the two rows of electromagnets, the operating ends of the armatures in one row being interleaved with those of the other row; C. the electromagnets comprising a plurality of vertically arranged magnet cores secured to the frame and depending therefrom in the two parallel rows, a plurality of bobbin assemblies slidably received on the cores in vertical positions, and electrical operating coils wound on the bobbin assemblies; D. a pair of printed circuit cards mounted vertically in the frame between the cores and the operating ends of the armatures, one card being associated with each row of electromagnets and armatures, the cards extending downward from positions above the tops of the bobbins to positions below the armatures, the cards having elongated vertically disposed slots therethrough, through which the armatures extend and which permit pivoting movement of the armatures when the coils are operated; E. snap-in connecting means for physically connecting each bobbin assembly to its associated circuit card in the required position in its row, the cards serving to vertically position the bobbin assemblies on the cores at the desired altitude, each card having a plurality of printed conductors having portions extending vertically downward to the bottom of the card and terminating in terminal pads along the bottom of the card, the conductors being arranged on the cards opposite to the bobbins and being electrically connected to the leads of the coils; and F. means for connecting individual operating circuit components for the electromagnets to the terminal pads at the bottom of the cards.