Pulley Box

Threading the wires through the pulley box and holding the wires in place until the Flagpole was set vertical was difficult.

The wires had a tendency to jump out of the pulleys when tension varied during erection.

Contact between the were and the brass pulley is assured by the force imposed as the wire is forced against the pulley.

Note: the original design used bristle probes to keep the wires in place but proved to be unreliable.

		The completed assembly ready to mount to the mast. Wire is threaded from the Hi Grip drive pulley, up through the brass pulley. Out toward the turnaround pulley to meet the insulating fiber line. Over the turnaround pulley. Back to the top of the nylon pulley. Down the backside of the nylon pulley and down toward the Hi Grip drive pulley.

		The improved pulley box has a main shaft which rests in a diagonal slot at the sides of the box. The center of the shaft is attaches to a spring which draws the pulley pair on an upward diagonal toward the back of the box. At the back of the box the side members of the pulleys meet a curved section of PVC pipe which is covered with the “loop” part of hook and loop adhesive. Wires are threaded through the pulleys but are prevented from jumping the pulleys by virtue of the mating on the pulley sides with the 90 degree pipe section. When the Flagpole has been erected, applying light tension to the now horizontal wires brings the wires in contact with the pulley root diameters (one knurled brass, the other smooth nylon). As the wires are properly tensioned, the pulley shaft slides downward to the stop bars.

		The brass gates open for assembly.