cam 1 control rods 15 15 39 move horizontally to pivot the cranks which in turn move shedding rods upwardly and downwardly with correct timing for shedding vertical yarns of the circular weaving machine in this way a single support 9 can control four shedding rods this saves substantial space and permits the use of a larger number of shedding rods and thus the weaving of a larger circular fabric support 9 rotates about bolt 3 which acts as its center of rotation bolt 3 also moves horizontally toward and away from the shedding rods which produces a pushing and pulling action the control rods 15 15 39 the pushing and pulling of control rods 15 15 39 causes rotation of the cranks which in turn causes vertical pivotal movement of the links 17 17 39 24 24 39 for example when cam 1 rotates the amount of friction generated between cam paths 6 and the follower means in the form of roller 10 11 10 39 11 39 is not exceedingly high the impact load on the follower means is also satisfactory and the mechanism of power transmission is very smooth without interferring the circular weaving machine can thus operate for long period of time without readjustment or repair the cam 101 of a convention circular weaving machine rotates in order to transmit power to the shedding rods which move in an up and down motion the friction and impact load of the prior art cam is not satisfactory and the machine cannot operate for long periods of time as with the invention in addition control rods 15 15 39 move in a reciprocating horizontal direction the lever arms 103 of a conventional circular weaving machine as shown in fig1 must transmit power directly to.