Constraint of a Carrier Support Shaft
Original Publication Date: 1985-Mar-01
Included in the Prior Art Database: 2005-Feb-18
A typewriter carrier shaft is constrained as a simply supported beam to eliminate induced moments, excessive flexure, and the resultant color imbalance in printed characters due to bending. A typewriter carrier shaft 1 (Fig. 1) has its right end formed with an insertion flat 2 and a detent flat 3. The carrier shaft 1 has its left end formed with an insertion flat 4 (Fig. 2) and a detent flat 5 with these corresponding to the flats 2 and 3 (Fig. 1) on the right end of the shaft 1. The left end of the shaft 1 has a groove 6 (Fig. 2) to receive a stop lug 7 of a left side plate 8. A right side plate 9 (Fig. 1) has a pair of locating surfaces 10 and 11 to engage the outer surface of the shaft 1 when the right end of the shaft 1 is inserted into the right side plate 9.