Type wheel 1 is turned by means of spiral gears 2 and 3. When the required letter on type wheel 1 faces roll 4, it is printed by motion of the wheel toward the roll. Link 5 rotates counterclockwise and engages roller 6 of link 7 which is pivoted on carriage 8. This turns link 7 so that its tooth a enters a tooth space of gear 9. Then shaft A turns about fixed axis K and type wheel 1 approaches roll 4. Link 10 supports shaft A, and is raised by pin 11 and held in the raised position by pawl 12. When pin 13 pushes lug b of pawl 12, the pawl turns and releases pin c so that link 10 drops and type wheel 1 is returned by gravity to its normal position.
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