PURPOSE: To fix a work to a work fixing tool in a stopped position by stopping only a part of an endless chain while rotating the whole of a chain system conveyance line.

CONSTITUTION: A chain system conveyance line is constituted of a work fixing tool arranged in an endless chain 7 of a chain system conveyance line and the endless chain 7 which is a tuning device with a work installing device 9 and with which the first gear, the second gear, the third gear, the fourth gear, the fifth gear and the sixth gear are meshed in order. Pivotally fixing shafts for the second gear and the fifth gear are connected by means of a connecting rod 8, and a support shaft 8a is arranged erectly in the central position of the connecting rod, and the connecting rod is supported with the support shaft so as to be put in slewing motion freely, and brake means 11 are arranged in the third gear and in its vicinity so that the third gear can repeat rotation/ stop intermittently, and thereby the chain between the uxtaposed third gear and fourth gear provided with the work installing device can be stopped temporarily.