Find out the odd one?
AImpression Roller
BPinion Wheel
CFeeding Tray
DOperating lever
Answer:
B. Pinion Wheel
Read Explanation:
Rocker Mechanism
- Four main parts of Rocker Mechanism are
Loose dog
Rigid Dog
Escapement wheel
Pinion wheel
Dog block
- A rectangular portion seen below the escapement wheel is known as dog block
- Two dogs are there in dog block : 1. loose dog 2. Rigid dog
- Movement of carriage is controlled by loose dog and a rigid dog
- Metal piece which always seen holding the tooth of escapement wheel when the machine is at rest is called loose dog
- If there is no loose dog the carriage dashes towards the left of the carriages.
- Loose dog is movable as it has loose dog spring.
- Rigid dog is stationary
- Loose dog helps in step by step movement
Escapement wheel
- A rigid dog and loose dog act on the Escapement wheel
- The action of the two dogs on the escapement wheel causes the step by step movement of the carriage
- Escapement wheel and pinion wheel are fixed in a same shaft.
Pinion wheel
- A small wheel at the center of the typewriter on which the carriage rack moves degree by degree is called pinion wheel
- The carriage moves on Pinion wheel
- Pinion wheel is connected to Escapement wheel
Impression Roller , Feeding Tray, Operating lever are the main parts of the Duplicator.