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Show moreDigitized image/text from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14) ; Photo no. 1: “C” Machine, arranged for feed rates from 5/16” to 3-3/4” per minute.
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14).
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14).
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14).
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14).
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14).
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14).
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14).
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14).
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14) ; experimental built-up end mill bank with arc welded tool steel deposited for cutting edges, May 1945.
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14).
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14) ; Photo no. 5: “M” machine: 36” x 36” x 8 ft. ; weight, 24,000 pounds ; arranged for feed rates of 3/16” to 10” per minute.
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14).
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14) ; Photo no. 4: “F” machine: weight, 6,500 pounds.
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Show moreDigitized photograph from Fred H. Colvin papers (Spec-Coll-00011) -- Series III: Photographs and Glass Plate Negatives, 1880-1964 -- Machines. Milling machines, circa 1903-1945 (Series 3, Box 11, Folder 14) ; Photo no. 42: This was the original Ingersoll Auto Type machine (circa 1907), a light, universal tool for work on engine blocks, crankcases, oil pans. Originally offered without rail elevation or side head elevation except by hand.
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