Related Words

Rocker: A broad-ended tool with a sharp-toothed curved base which is used to ground a mezzotint plate. It is so called because it is applied with a rocking motion.

Rocker Arm: A centrally pivoted lever that transmits the motion of the camshaft to open and close the valves.

Rocker Step: An offensive move consisting of a jab step followed by a step backward; the player can either shoot or drive, depending on the movement of the defender.

Rockered Blades: Used by professional ice hockey skaters; the gentle curve in a very sharp blade of an ice skate produced by rounding the toe and heel of the blade to make it easier for hockey players to tur . . . View Full Definition

Shovelhead: Shovelhead is the name of the Harley-Davidson engine used from 1966-1985. The shovel engine has rocker boxes, not covers, and rocker arms pivoting on shafts leading to castings on the heads. . . . View Full Definition

Pushrods: Pushrods are used to connect to rocker arm assemblies which, in turn, open and close valves. In this case, the Camshaft is located near the crankshaft. The rotation of the camshaft causes it . . . View Full Definition

Knucklehead: Knucklehead is the name of the Harley-Davidson engine used from 1936-1947. If you sit on the seat of a knucklehead machine and look down to the right side of the engine, the rocker box looks . . . View Full Definition

Overhead Valve (OHV): A type of piston engine that places the camshaft in the cylinder block and uses pushrods or rods to actuate rocker arms above the cylinder head to actuate the valves. Lifters or tappets resi . . . View Full Definition

Panhead: Panhead is the name of the Harley-Davidson engine used from 1948-1965. The chromed rocker covers resemble a baking or frying pan.

Camshaft: A metal shaft with two or more cams (oval “lobes”) that rotates to operate inlet and/or exhaust valves in a four-stroke engine.