Crank gear for multi-cylinder reciprocating IC engine or pump - uses multi-piston crosshead block carrying slider enclosing crankpin

摘要

The crank gear for multi-cylinder recip. IC engines or pumps has the rods from an even number of pistons with parallel axes rigidly connected to a common crosshead. A block free to slide at right angles to the line of piston movement in bearings in this crosshead forms the 'big end' for a crank on the drive shaft whose axis is perpendicular to the lines of both piston and block movement.