enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Pulley - Wikipedia

   en.wikipedia.org/wiki/Pulley

   Sheave without a rope. A pulley is a wheel on an axle or shaft enabling a taut cable or belt passing over the wheel to move and change direction, or transfer power between itself and a shaft. A sheave or pulley wheel is a pulley using an axle supported by a frame or shell (block) to guide a cable or exert force.

3. Compound bow - Wikipedia

   en.wikipedia.org/wiki/Compound_bow

   The limbs store the kinetic energy of the bow – no energy is stored in the pulleys and cables. Draw weights of adult compound bows range is between 40 and 80 pounds (18 and 36 kg), which can create arrow speeds of 250 to 370 feet per second (76 to 113 m/s). In the most common configuration, there is a cam or wheel at the end of each limb. The ...

4. Block and tackle - Wikipedia

   en.wikipedia.org/wiki/Block_and_tackle

   A block is a set of pulleys or sheaves mounted on a single frame. An assembly of blocks with a rope threaded through the pulleys is called tackle. The process of threading ropes or cables through blocks is called "reeving", and a threaded block and tackle is said to have been "rove". [7]

5. Line shaft - Wikipedia

   en.wikipedia.org/wiki/Line_shaft

   The fixed pulley on the upper shaft is driven at constant speed by a belt from the power source. The loose pulley ('idler') allows the machine to be stopped in isolation – necessary for changing speed. The stepped pulleys (left) provide three drive speeds for the machine tool (not shown), depending on which pair of pulleys is connected by the ...

6. Traveling block - Wikipedia

   en.wikipedia.org/wiki/Traveling_block

   A traveling block is the freely moving section of a block and tackle that contains a set of pulleys or sheaves through which the drill line (wire rope) is threaded or reeved and is opposite (and under) the crown block (the stationary section).

7. Block (sailing) - Wikipedia

   en.wikipedia.org/wiki/Block_(sailing)

   In sailing, a block is a single or multiple pulley. One or a number of sheaves are enclosed in an assembly between cheeks or chocks. In use, a block is fixed to the end of a line, to a spar, or to a surface. A line (rope) is reeved through the sheaves, and maybe through one or more matching blocks at some far end, to make up a tackle.