Abstract: A machine for assembling fence panels. The machine includes rail supports, a plurality of rail transport assemblies, a picket hopper for storing pickets substantially perpendicular to the rail supports, a picket transport assembly, a picket spacing assembly, a picket skewing assembly, and nailing guns. The rail transport assemblies include a conveyor for moving rails longitudinally to an assembly position. The picket transport assembly uses a conveyor to move pickets from the hopper to the assembly position, delivering the pickets at an acute delivery angle. The picket spacing assembly increases the delivery angle for a picket to increase spacing between pickets. The picket skewing assembly pushes an end of a picket closer to a previous picket to adjust for spacing between warped pickets. The nailing guns secure a picket at the assembly position to the rails. A machine controller is used to automatically operate the components of the machine.

Abstract: A machine for assembling fence panels. The machine includes rail supports, a plurality of rail transport assemblies, a picket hopper for storing pickets substantially perpendicular to the rail supports, a picket transport assembly, a picket spacing assembly, a picket skewing assembly, and nailing guns. The rail transport assemblies include a conveyor for moving rails longitudinally to an assembly position. The picket transport assembly uses a conveyor to move pickets from the hopper to the assembly position, delivering the pickets at an acute delivery angle. The picket spacing assembly increases the delivery angle for a picket to increase spacing between pickets. The picket skewing assembly pushes an end of a picket closer to a previous picket to adjust for spacing between warped pickets. The nailing guns secure a picket at the assembly position to the rails. A machine controller is used to automatically operate the components of the machine.

Abstract: A speed control for varying the video tape speed which is adapted for use with the video tape recorder having a power supply providing a power signal and a capstan motor for driving the video tape in forward and reverse directions. The speed control includes: a capstan drive amplifier receiving the power signal and an input control signal for providing an output signal which is connected to the capstan motor and which is controllably variable in response to the control signal; and a variable speed control providing the controllably variable control signal which is connected to the capstan drive amplifier for controllably varying the output signal of the capstan drive amplifier thereby controllably varying the speed of the capstan motor.