prior art and does not require the transmission cord to be redirected before it is wound around the motor 39 s wheel or drive pulley prior art employs multiple wheels and or clips with channels to redirect the cord vertically before engaging a pulley wheel then redirects it back horizontally before the cord re enters the traverse rod e g see us 2006 0162877 a1 and 7360576 b2 this increases the complexity of the assembly and may decrease efficiency and contribute to slippage u s pat no 7 360 576 b2 purports to combat the slippage problem but still requires redirection of the transmission cord and appears to increase rather than decrease structural complexity referring to fig2 a traverse rod aperture 114 r penetrates the front surface of drive pulley housing 104 which contains a drive pulley 105 with a drive pulley groove 106 to receive a transmission cord shown in fig2 from traverse rod 108 reverse electric motor 110 is positioned in front of and coupled with right angled drive 112 to rotate 105 rubber not shown coats 106 to increase traction of the transmission cord traverse rod aperture 114 r is sized to receive the right end of horizontally disposed traverse rod 108 while said traverse rod 39 s transmission cord is wound around 106 of drive pulley 105 which replaces the traverse rod 39 s right.