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Hartness 3x36 flat turret lathe with cross-sliding head, equipped for bar work, 1910 [1]. A turret lathe is a form of metalworking lathe that is used for repetitive production of duplicate parts, which by the nature of their cutting process are usually interchangeable.
Hartness 3x36 flat turret lathe with cross sliding head, equipped for bar work. [5] James Hartness with his most successful invention, the flat turret lathe, c. 1920. Jones & Lamson publicity photo. Bar work—Pieces made by a turret lathe from a long bar of stock. [5] Patent drawings for Hartness screw-thread optical comparator.
Center lathe with digital read out and chuck guard. Size is 460 mm diameter x 1000 mm between centers. In machining, a metal lathe or metalworking lathe is a large class of lathes designed for precisely machining relatively hard materials.
Hartness, James (1915), Hartness Flat Turret Lathe Manual: A Hand Book for Operators, Springfield, Vermont and London: Jones & Lamson Machine Company; Smid, Peter (2010), CNC Control Setup for Milling and Turning, New York: Industrial Press, ISBN 978-0831133504, LCCN 2010007023.
The Lincoln miller's spindle could be raised and lowered, but the original idea behind its positioning was to be set up in position and then run, as opposed to being moved frequently while running. Like a turret lathe, it was a repetitive-production machine, with each skilled setup followed by extensive fairly low skill operation.
By 1913 the company employed 100. In 1916 to 1917, Steinle extended the factory floor to the south, including the monitor roof. During World War I Steinle manufactured military supplies - using his turret lathes to manufacture five-inch naval guns in a separate 600-man factory on Atwood Avenue. Minor additions to the factory at 149 Waubesa ...
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