means for imparting rotation to said pulley, said means comprising a rotating means, means connecting said fixedly positioned flange to said rotating means; and means for connecting said axially movable flange to said rotation means while permitting the axial movement thereof, said means comprising {HEAD ~ an externally splined member} connected to said {TAIL ~ axially movable flange} and a meshing internally splined coupling member connected to said rotation means 
means for imparting rotation to said pulley , said means comprising a rotating means , means connecting said fixedly positioned flange to said rotating means ; and means for connecting said axially movable flange to said rotation means while permitting the axial movement thereof , said means comprising { HEAD ~ an externally splined member } connected to said { TAIL ~ axially movable flange } and a meshing internally splined coupling member connected to said rotation means
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