Pulley
| View Cart ⇗ | Info
A pulley, also called a sheave or a drum, is a mechanism composed of a wheel on an axle or shaft that may have a groove between two flanges around its circumference. A rope, cable, belt, or chain usually runs over the wheel and inside the groove, if present. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion. Two or more pulleys together are called a block and tackle.
Galleries
PulleysSource
Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)
Downloads
2400×2355, 372.1 KiB
1024×1004, 65.8 KiB
640×628, 36.5 KiB
320×314, 15.2 KiB