Driven Gear: the output motion and force are transmited by this gear
Driver Gear: the input motion and force is applied to this gear
Gear: a mechanical assembly ofinteracting parts that serves to transmit motion or to change the rate or direction of motion.
Gear Ratio: the gear ratio is defined as the rotation speed of the output shaft divided by the rotation speed of the input shaft.
Gear Train: a group of gears working together; They are arranged so that their teeth closely interlock (mesh).
Gear Wheel: a basic mechanism. A gear is a wheel with accurately machined teeth round its edge. Its purpose is to transmit rotary motion and force.
Meshed Gears: when the teeth of one gear are engaged with the teeth in the other
Spur Gears: two spur gears of different sizes mesh together; The larger gear is called a wheeland the smaller gear is called the pinion.
Verge Escapement: a device found in a mechanical clock; It consists of a crown wheel and balance, connected through gears to the clock hands. As the weight falls it puts the crown wheel in rotary motion. It turns in jerks or ticks. This makes the clock's hands move round too.