| A | B |
|---|
| “Belt & Pulley” | ”The transmission of power between shafts by means of a belt connecting pulleys on the shafts.” |
| “Bevel Gear” | ”One of a pair of gears used to connect two shafts whose axes intersect.” |
| “Cam & Follower” | ”A pear-shaped disk with an off-center pivot point |
| “Crank & Slider” | ”A pivot pin near the outside edge of a wheel or disk that changes reciprocating motion into rotary motion.” |
| “Crown & Pinion” | ”A small cogwheel (pinion gear) that engages or is engaged by a larger cogwheel (crown gear).” |
| “Drive Gear” | ”The gear which transmits power and motion to the rest of the system. The input gear.” |
| “Driven Gear” | ”The member of a pair of gears to which motion and power are transmitted by the other. The output gear.” |
| “Energy” | ”The ability to do work.” |
| “Force” | ”A push or pull on an object.” |
| “Gear” | ”A toothed wheel that works with others to alter the relation between the speed of an engine and the speed of the driven parts.” |
| “Gear Ratio” | ”The ratio of the speed of the driving member of a gear train to that of the driven member.” |
| “Idler Gear” | ”A gear between the driver and the driven gear used to change rotational direction.” |
| “Input” | ”Something put into a system |
| “Inverse” | ”Opposite in position |
| “Lead Screw” | ”A threaded shaft used to convert rotary movement to linear movement.” |
| “Linear Motion” | ”Movement in a straight line.” |
| “Mechanism” | ”The part of a machine which contains two or more pieces arranged so that the motion of one compels the motion of the others.” |
| “Oscillate” | ”A swing back and forth at a regular rate.” |
| “Output” | ”The results of the operation of any system.” |
| “Pitch” | ”The distance between adjacent threads in a screw.” |
| “Rack & Pinion” | ”A rotating gear that meshes with a bar that has gear teeth along its length. Changes rotating motion into linear motion.” |
| “Ratio” | ”The quantitative relation between two amounts showing the number of times one value contains or is contained within the other.” |
| “Reciprocating” | ”A back and forth movement.” |
| “Rotary Motion” | ”Circular movement.” |
| “Simple Gear Train” | ”A combination of two or more gears used to transmit motion between two rotating shafts or between a shaft and a slide.” |
| “Torque” | ”A twisting force.” |
| “Universal Joint” | ”A joint that allows connected shafts to spin freely while permitting a change in direction.” |
| “Work” | ”The application of force that moves an object a certain distance.” |
| “Worm & Wheel” | ”A mechanical arrangement consisting of a toothed wheel driven by a short revolving cylinder bearing a screw thread.” |
