Jones & Lamson grew out of the gun-manufacturing company Robbins & Lawrence. Jones & Lamson was formed in 1869 and continued in the gun business also manufacturing machine tools for making guns and sewing machines along with engine-lathes, screw-milling machines and drill presses. In 1888 James Hartness became the superintendent at Jones & Lamson and began development of a flat-turret lathe of his own design. He obtained patent 457,967 in 1891 and the company changed its focus to the production of the machine. The undated bottom picture looks like the machine in the 1911 article here.
Machine description here.
Manual for Flat-Turret Lathe by James Hartness here
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