Abstract: In a textile yarn processing machine, such as spinning and twisting machines, the combination therewith of control apparatus for automating movements of various elements of the yarn processing machine for preparing the same for doffing of full packages and for starting-up of new packages of processed yarn including combinations and subcombinations of the following. Independent hydraulic fluid operated devices are connected to the builder motion mechanisms of the machine including a piston and cylinder device positively connected between the crank arm of the builder motion mechanisms and the machine frame for relative reciprocating movement with respect to each other during reciprocating movements of the crank arm and the ring rail of the machine.