I've had time lately to work towards getting my circa 1880's Putnam lathe operational and need some advice. Thread about my lathe is here if people want reference info & pics- https://www.practicalmachinist.com/vb/antique-machinery-and-history/new-guy-putnam-lathe-index-mill-model-40h-379375/
Right now I'm working to resolve the broken rise and fall screw. When I got the lathe, the screw was broken off approx flush with the cross slide base and a previous owner had attempted to drill it out... It did work but needs replacement. The saddle has been disassembled and this is what remains to be addressed-
Top view showing broken r&f screw and well-punished brass retaining nut(?) 99% as it came to me-
The underside, with bottom of r&f assembly visible through hole-
Not sure if this brass retainer is threaded, but assume it is. Any hex or square flats to facilitate removal are long gone. Lots of searching online, studying the few Putnam drawings I've found but discovered no applicable information yet. I've soaked it for the past few days. it isn't moving yet with moderate effort. Before I proceed, can anyone confirm if this retainer is threaded or not and if so, if it's more likely left- or right-hand threads? Any guidance is appreciated.
Right now I'm working to resolve the broken rise and fall screw. When I got the lathe, the screw was broken off approx flush with the cross slide base and a previous owner had attempted to drill it out... It did work but needs replacement. The saddle has been disassembled and this is what remains to be addressed-
Top view showing broken r&f screw and well-punished brass retaining nut(?) 99% as it came to me-
The underside, with bottom of r&f assembly visible through hole-
Not sure if this brass retainer is threaded, but assume it is. Any hex or square flats to facilitate removal are long gone. Lots of searching online, studying the few Putnam drawings I've found but discovered no applicable information yet. I've soaked it for the past few days. it isn't moving yet with moderate effort. Before I proceed, can anyone confirm if this retainer is threaded or not and if so, if it's more likely left- or right-hand threads? Any guidance is appreciated.