A curved piece of wood attached to the bottom of a rocking chair or cradle that enables it to rock back and forth
a member of the group of people in Britain in the 1960s who dressed in black leather, were interested in 1950s music, were predominantly racist and hated mods
In canoe design, the curve of the keel line from bow to stern A straight keel line has no rocker, tracking well but lacking maneuverability A heavy rocker is exceptionally maneuverable but will not track well Moderately rockered canoes are usually straight with a rise toward the ends Most general recreation canoes have a moderate rocker
A measure of the amount of a curve in the portion of a skate blade that touches the ice Speed skating blades have little rocker, which makes them faster but less maneuverable Hockey skates have a great deal of rocker, allowing greater maneuverability
A skate with a curved blade, somewhat resembling in shape the rocker of a cradle
A rocker is a chair that is built on two curved pieces of wood so that you can rock yourself backwards and forwards while you are sitting in it
The amount of curvature in a wakeboard If a wakeboard has 2 inches of Rocker, then the tip and tail are 2 inches higher than the middle of the board There are two types of rocker, continuous and three-stage Continuous rocker is a smooth curve, while a board with three-stages of rocker, with a flat spot in the middle of the board
A multi-toothed steel tool for laying mezzotint ground It is rocked across the plate many times in all directions to produce the characteristic burr top
upward curvature of the keel of a boat toward bow and stern when viewed in profile On a flat surface, the bow and stern of a boat with rocker will not be resting on the surface, and the boat can "rock" (pitch) like a rocking chair On a boat with no rocker, a side view of the keel forms a perfectly straight line
a curved support that permits the supported object to rock to and fro an ice skate with a curved blade a trough on rockers used by gold miners to shake earth in water in order to separate the gold a teenager or young adult in the 1960s who wore leather jackets and rode motorcycles a performer or composer or fan of rock music an attendant who rocks a child in a cradle
1 A turn on one foot in which the skater changes direction but not edge, producing a trace which is a section of one circle before the turn and a section of another circle of opposite curvature after the turn The cusp of the turn points inwards from the center of the circle preceding the turn and outwards towards the center of the circle following the turn 2 Any compulsory figure consisting of three circles in which rocker turns are used to transition from the center circle to the end circles 3 The curved contour extending from the heel to toe of a skate blade
In mezzotint, a serrated cutting tool with a wide curved edge that roughens the surface of a metal plate
These are pivoting levers that transfer the movement caused from the rotating lobes of the camshaft to the opening and closing intake and exhaust valves
A curved lever that pivots in the middle One end is attached to the top of the valve stem In overhead-valve engines the other end is attached to the push rod In some overhead-cam engines the other end is attached directly to the camshaft lobe As the camshaft rotates, the rocker arms pivot causing the valves to open and close Also see ball joint rocker arm and high lift rocker arms
A lever located on a fulcrum or shaft, one end on the valve stem and the other either on the push rod or directly on the camshaft lobes As the camshaft rotates, the arms rock on their fulcrums causing the valves to open and close
(Otomotiv) Curved levers, each of which has one end attached to a push rod and the other end attached to a valve stem in order to make the valves open and close in response to the pressure of the cam lobes on the spinning camshaft. Cars with overhead cams don't always require rocker arms, because the valve stems may contact the cam lobes directly
originally a British youth subculture that evolved out of the teddy boys in the 1960s; wore black leather jackets and jeans and boots; had greased hair and rode motorcycles and listened to rock'n'roll; were largely unskilled manual laborers