Question

On which part of the typewriter do the rigid dog and loose dog act ?

1. Escapement wheel
2. Pinion wheel
3. Thumb wheel
4. None of the above

• A. iii, iv
• B. iii only
• C. i only
• D. ii, iv

Answer 1

Answer:

C. i only

• Escapement wheel is responsible for step-by-step movement of the carriage.
• Loose dog and rigid dog act on the Escapement wheel.
• Loose dog will normally hold the tooth of the escapement wheel and arrest the  movement or the carriage.
• When the loose dog leaves the tooth of the escapement wheel, the rigid dog will catch  the same tooth of the escapement wheel that has been liberated by the loose dog.