Type train assembly for printing machines

Details Type train assembly for printing machines Type train assembly for printing machines

1975-02-20

1976-08-03

Burr, Edgar S.

Printing

Selective or progressive

Printing members

B41J 120

Patent

active

039722821

ABSTRACT:
A type train assembly includes a pair of parallel belts stretched around drive wheels, a series of type carriers centered between and attached to both belts to balance and divide the traction and tension forces, and a guide bar slidably engaging a groove in the rear surface of each type carrier to guide them accurately and to support them firmly for impact by print hammers. The type carriers abut one another in the direction of travel and this combines with the tension in the belts to reduce dragging of the type, which would otherwise result from stretching of the belts occasioned by hammer impact. The carriers are formed with pairs of transverse arms having flanges and projections for gripping the pair of belts, and with recesses for engaging teeth formed in the belts, to fix the carriers firmly thereon.

REFERENCES:
patent: 3216348 (1965-11-01), Oldenburg et al.
patent: 3379125 (1968-04-01), Antonucci
patent: 3402657 (1968-09-01), Potter et al.
patent: 3621778 (1971-11-01), Ripple et al.
patent: 3633501 (1972-01-01), Edwards
patent: 3638565 (1972-02-01), Drejza et al.
patent: 3745918 (1973-07-01), Perry et al.
patent: 3766852 (1973-10-01), DePuy et al.
patent: 3814012 (1974-06-01), Derc
IBM Technical Disclosure Bulletin, Bostnick, vol. 9, No. 9, Feb. 1967, p. 1204.
IBM Technical Disclosure Bulletin, Stack, vol. 14, No. 12, May 1972, pp. 3638-3639.
IBM Technical Disclosure Bulletin, Mouchon, vol. 13, No. 8, Jan. 1971, p. 2467.

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