To provide a great number of assemblies of housings for providing a jacquard type weaving mechanism having multiple individual actuators stored in the interior of the housings.

In this jacquard type weaving mechanism for forming a shed in a weaving machine, harness cords 6 connected to a heald frame 12 related to warps 13 are controlled by electric actuators stored in compartments of a great number of housings 1. The housings 1 are mutually installed according to a line or a pillar and the line or the pillar of the housings 1 constitutes at least one panel A or B positioned at the top of the weaving machine.