US Patent: 505,013
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| Machine for Centering, Preparing, and Countersinking Bars, Studs, etc.
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Patentee:
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| William Webster (exact or similar names) - Leeds, York, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 14, 1892 |
| Granted: |
Sep. 12, 1893 |
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Joel Havens
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Description: |
| Pattison & Nesbitt - patent attorneys
My invention relates to improvements in machinery for centering, preparing and countersinking bars, studs and similar articles, previous to their being turned, more expeditiously, economically, and in a superior manner than at present. The objects of my invention are first, to fix the bars under treatment in a movable jawed chuck, on the end of a hollow rotating spindle of a fast headstock, secondly to cause the bar to be operated on to run truly, by means of a suitable rest, thirdly to drill the centers in the ends of such bars, studs and similar articles, by means of the point of a twist drill or a straight grooved, or spear shaped flat drill, and while the center is being drilled, to prepare or face the ends of such articles, by means of a fixed cutter; then to countersink the center by means of a smaller drill.
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