pair of air oil tanks 254 256 one being in series with each port of the double acting cylinder 170 the top of the stack of components 90 is sensed by a photoelectric mechanism 182 secured to the support structure 24 just below the drop plate 152 the photoelectric sensor controls the location of the top of the stack of components through the air oil tanks and cylinder 170 as will be subsequently described the operation of the system will now be described an operator actuates a manual switch 200 which turns on the sewing machine motor 55 the operator then properly positions and aligns a panel 26 in front of the sewing instrumentalities of the sewing machine using both hands depressing the treadle 38 operates the sewing machine motor clutch 202 which initiates operation of the sewing machine instrumentalities 32 the clutch also simultaneously activates a microswitch 204 which in turn activates the brush motor 80 brush motor 41 a solenoid valve 206 which permits the discharge of air from jet 42 and a valve 208 which controls vacuum source 43 which draws any waste material through opening 46 in the cloth plate 48 actuation of the clutch 202 also drives the binding drive belt 54 the binding wheel 52 the cloth wheel 50 and the conveyor belt 92 through the various pulleys belts and shafts previously described the operator.