Crank-arm Sentence Examples

In a turning piece, the perpendicular let fall from its connected point upon its axis of rotation is the arm or crank-arm.

If at any instant the direction of one of the crank-arms coincides with the line of connection, the common perpendicular of the line sf connection and the axis of that crank-arm vanishes, and the 3irectional relation of the motions becomes indeterminate.

The position of the connected point of the crank-arm in question at such an instant is called a dead-point.

If a connected point belongs to a turning piece, the direction of its motion at a given instant is perpendicular to the plane containing the axis and crank-arm of the piece.

The centre of the eccentric is its connected point; and its eccentricity, or the distance from that centre to the axis of the shaft, is its crank-arm.

When it is connected with a continuously turning piece (such as the crank of a steam-engine) the ends of the stroke of the reciprocating piece correspond to the d.ead-points of the path of the connected point of the turning piece, where the line of connection is continuous with or coincides with the crank-arm.

Let S be the length of stroke of the reciprocating piece, L the length of the line of connection, and R the crank-arm of the continuously turning piece.