Spent time in the shop working on 1053 typewriter and Virtual 2315 build

TYPEWRITER MAIN SHAFT CLEANED UP AND REINSTALLED

The main shaft in the Selectric 1 mechanism holds the rear of the carrier, which slides left and right along the shaft to the various columns of the page. The shaft is keyed and rotates to energize the typeball mechanism rotation, tilt and strike onto the ribbon. 

The shaft on this 1053 had corrosion and pitting along its length, inhibiting the free movement of the carrier for spacing, backspacing, tabulation and carrier return operations. I had been concerned that the pitting might be so deep that I would need a replacement shaft. Fortunately, sanding the shaft smoothed it out enough for free sliding, particularly once I grease the shaft. The remaining pits are small and don't have raised edges.

The shaft is installed in typewriter allowing me to move on to adjusting and repairing the portion of the carrier that moves one column for spacing and backspacing as well as allowing free movement during tabulation until it reaches a set tab position. 

 THE VIRTUAL CARTRIDGE HARDWARE

I prepared the connector and wire harness to connect to the Arduino inside the project box. A ribbon cable will plug into this connector and carry the signals over to the connector on my interface board. Another cable runs from the interface board to an adapter with small wire-wrap lines that I can connect to the appropriate signal points of the IBM 1130 internal disk drive electronics backplane. 

Ahead I will connect the wire harness to the Arduino connector block for each relevant signal. The interface board will need to be mounted in place and the adapter for the wire-wrap connections must be secured before I can accomplish the actual connection to the backplane pins.