Apparatus for changing a lap

In combination,

• a lap processing machine having a working position for receiving and unwinding a lap roll thereat and a reserve position for receiving a reserve lap roll;
• means for moving said reserve lap roll from said reserve position to said working position, said means being pivotally mounted to move with a received reserve lap roll thereon towards said working position to move the received reserve lap roll from said reserve position towards said working position in an arcuate manner during pivoting of said means;
• said means includes a trough receiving at least one reserve lap roll therein and further includes at least a pair of arms secured to said trough and pivotally mounted on a common pivot axis and a piston and cylinder unit pivotally connected to and between at least one of said arms and said lap processing machine for pivoting said arms about said axis;
• and
• a blocking element for selectively blocking movement of said arms towards said working position.