US Patent: 410,146
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| Screw Cutting Machine
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Patentee:
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| Edward P. Bullard (exact or similar names) - Bridgeport, Fairfield County, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 25, 1889 |
| Granted: |
Sep. 03, 1889 |
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Joel Havens
"Vintage Machinery" entry for Bridgeport Machine Tool Works
"Vintage Machinery" entry for Bullard Machine Tool Co.
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Description: |
| Claim:
My invention relates to certain new and1 useful improvements in screw-cutting machines, but more particularly to such machines`as are used in cutting large screws for assembling heavy machinery and like uses; and the object of my invention is to provide a simple and compact construction which shall be easy of operation, and in which undue complication shall be avoided, and furthermore and particularly does it consist in the arrangement of the chaser-bar Within and extending through the back-gear quill and standards, whereby strength and economy of space are promoted; and with these ends in view my invention consists in the construction and combination of elements |
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