US Patent: 2,448,305
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| Bolt Pointing Machine
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Patentee:
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| Ernest Girard (exact or similar names) - Central Falls, Providence County, RI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 19, 1945 |
| Granted: |
Aug. 31, 1948 |
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Joel Havens
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Description: |
| Claim:
My invention relates to improvements in high speed pointing machines particularly adapted for pointing bolts. While bolts may be pointed on a lathe by advancing the rotating bolt into a stationary holder and I am aware that others have provided ball or other types of anti-friction bearings for use in such a stationary holder, it has been discovered that the production of bolts can be greatly increased if the time necessary to start and stop rotation of each individual bolt is lessened by successively advancing stationary bolts through a continuously rapidly rotating tool holder. This has been done in the art for many years, but to support the bolts the inner end of the tool holder has been provided with a standard type of bearing or bushing. Also in the prior art only one cutting tool has been employed to rotate with the rotating tool holder. One tool therefore has tended to wear the bearing which rotates evenly therewith diametrically opposite its point of application on the stationary bolt and these bushings have tended to wear out very quickly, the longest length of life thereof in use being for the production of about 25,000 screws. |
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