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Series II. Blueprints, 1905-1934

Scope and Content Notes:

Series II consists of Mackintosh-Hemphill blueprints from 1905-1934. The blueprints are of processes used to manufacture products and of the products themselves. Some of the processes include rail roughing, continuous roughing, rail rerolling, and cold rolling. Some of the items produced by Mackintosh-Hemphill are grooved chills, billets, rails, beams, rail flanges, and girder rails.

Folder 9-10 Grooved Chills, 1905-1906
Folder 11-15 Grooved Chills, 1910-1914

Box 2
Folder 1-2 Grooved Chills, 1915-1916
Folder 3 Grooved Chills, 1918
Folder 4 Grooved Chills, undated
Folder 5 Billets, 1905
Folder 6 Rails and Rail Roughing, 1906
Folder 7 Continuous Roughing, 1909
Folder 8 Half-Templates, Rail Rerolling 1910
Folder 9 Rail Flange, Continuous Roughing, 1911
Folder 10 Standard Beams, Continuous Roughing,Plow Beams, 1912
Folder 11 Rail Rerolling, Flanges, I-Beam Harrow Bars, 1913
Folder 12 Rails and Rail Splitting, 1914
Folder 13 Rail Splitting and Continuous Layout, 1915
Folder 14 Rail Rerolling and Continuous Roughing, 1916
Folder 15 Rails and Rail Roughing, 1917
Folder 16 Rails and Rail Rerolling, 1918
Folder 17 Girder Rails, 1919
Folder 18 Razor's Edge and Billets, 1920
Folder 19 Sebeaded Drill Section and Rail Diagonal Method, 1924
Folder 20 10 inch Mill Hexagons and Billets, 1925
Folder 21 Cold Rolling For Hexagons and Octagons, 1931
Folder 22 Rail Rerolling, undated
Folder 23 Rails, undated
Folder 24 Plug Ovals, undated
Folder 25 Billets, undated
Folder 26 Billets, Railheads and Flats, undated
Folder 27 Miscellaneous Blueprints, undated