As stated a few posts back the ratchet advance mechanism was missing from this machine. It looks like the previous owner started on making the ratchet, but only got so far and then sold the machine to me in 2012.
I will start with the parts that were supplied with the machine, they were a bit rusty so I took it all apart and cleaned each part. I also purchase a hand crank from China.
There are problems in that the pawl did not want to jump over teeth nor advance when I tried to operate it by hand on the X axis screw.
First operation was to true the pawl face on my 800 grit diamond lap using a wood chisel, hand plane blade sharpening jig.
The next problem was that the teeth on the ratchet teeth were square to the axis and needed a bit of rounding to allow the ramp on the pawl to lift up against the spring when turned. The spring was too long and exhibited too much force for the pawl to lift up and was shortened.
At this point I removed the X axis screw and turned down the end to allow me to install a hand crank then threaded the end and used a self locking nut to secure the handle to the X axis screw. What had been installed was a section of 3/4" hex stock that was drilled and pined to the end of the screw.
Now to make the connecting rod. A section of stainless steel tube was reamed on my Myford ML7.
I then made up the following parts from brass and stainless steel. I could have TIG welded the parts, but the fits were all good and the heat from the welding would have distorted the parts and fits so I pressed the parts together having to stake at the ratchet part of the connecting rod I also used my 8 ton electrical hydraulic crimping tool to set the rod to the tube at the driven end.
TonyK.
Grimsby Ontario Canada.