US Patent: 1,499,412
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Drilling machine
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Patentees:
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Roswell H. Rausch (exact or similar names) - Plainfield, NJ |
Willard Thomas Sears (exact or similar names) - Montclair, NJ |
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Patent Dates:
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Applied: |
Feb. 21, 1921 |
Granted: |
Jul. 01, 1924 |
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Jeff Joslin Vintage Machinery entry for Niles-Bement-Pond Co.
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Description: |
Improved control of the spindle drive change-speed gearing of the radial drill in patent 1,296,863. |
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