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A pulley belt arranged so that the sides cross, thereby making the pulleys rotate in opposite directions.



Related Terms

BELT SHIFTER

A device with finger like projections used to shift a belt from one pulley to another or to replace a belt which has slipped off a pulley.

ARC OF CONTACT

  1. The angular distance over which a gear tooth travels while it is in contact with its mating tooth. Also known as arc of action. 2. The angular distance a pulley travels while in contact with a belt or rope.

HEAD SECTION

That part of belt conveyor which consists of a drive pulley, a head pulley which may or may not be a drive pulley, belt idlers if included, and the necessary framing.

IDLER PULLEY

A pulley used to guide and tighten the belt or chain of a conveyor system.

TIMING BELT

The type of belt that used where slippage cannot be tolerated.

POSITIVES DRIVE BELT

The type of belt that used where slippage cannot be tolerated.

BLOCK

A pulley with one or more sheaves (grooves), over which a rope is roved. It can be used to chage the direction of the rope, or in pairs used to form a tackle.

END GUIDE ASSEMBLY

One of the four pulley units that guide the cable of a vehicular cable ferry across the ferry (also called pedestal).

FLOOD PLAIN

The belt of low flat ground bordering a stream or river channel that is flooded when runoff exceeds the capacity of the stream channel.

CHEEKS PLATES

The sides of a block that retain the pulley sheaves.

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