US Patent: 877,403
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| Rapid-Traverse Device for Boring-Mills
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Patentees:
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| Emanuel Henrikson (exact or similar names) - Bridgeport, Fairfield County, CT |
| Edward P. Bullard (exact or similar names) - Bridgeport, Fairfield County, CT |
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Patent Dates:
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| Applied: |
Mar. 16, 1906 |
| Granted: |
Jan. 21, 1908 |
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Joel Havens
Vintage Machinery entry for Bullard Machine Tool Co.
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Description: |
| This patent was listed on a Bullard Maxi-Mill patent plate.
Abstract:
This invention relates to new and useful improvements in boring mills and similar machine tools and particularly to mechanism 'or quickly shifting and setting the 'heads End tools of such machines. Heretofore boring mills of this class have been connected to operatively feed the tool forward slowly, both. crosswise and vertically n operating upon a piece of work, and could )e. run back by reversing, the same mechanism, which however being operated at a very low speed was objectionable. These feeds rave also been. operated in some instances )y hand power which .owing, to the labor involved in setting the head, and likewise on recount of the slowness with which it was accomplished was likewise unpopular.
Claim:
A rapid power traverse for boring mill tools, comprising driving mechanism, movable feed rod operatively related to said driving mechanism, a tool bar having operative connections with the feed rod, an independent high speed shaft, gears connecting the latter and the feed rod for engaging the feed rod-with the high speed shaft at predetermined points in the range of movement of the feed rod, mechanism for engaging the feed rod with the driving mechanism when the feed rod is in a position intermediate of its range of movement, and for disengaging the driving mechanism when the rod is engaged with the high speed shaft, and means for operating the feed rod to render operative the connections between the same and the high speed shaft when the rod is shifted from said intermediate position. |
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