US Patent: 1,749,374
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| Machine Tool
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Patentee:
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| Edward P. Bullard, Jr. (exact or similar names) - Stratford, Fairfield County, CT |
| Assignees: |
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Bullard Co. - Bridgeport, Fairfield County, CT |
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Patent Dates:
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| Applied: |
Aug. 26, 1927 |
| Granted: |
Mar. 04, 1930 |
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Joel Havens
Vintage Machinery entry for Bullard Machine Tool Co.
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Description: |
| Abstract:
This invention relates to new and useful improvements in machine tools of the lathe and boring mill types such as include a rotatable work carrying table mounted to operate on a vertical axis, and having front and side tool carrying heads for operating upon work carried by the rotary table. The invention is applicable to a commercial type of machine having a rotary work carrying table and in conjunction with which is employed a vertically adjustable cross rail carrying one or more front centrally arranged turret heads that are laterally movable upon the cross rail and adapted for both horizontal and vertical feeding movements. The invention more particularly relates to a novel form of side head and mechanism for operating the same, which is designed and especially adapted for the above type of machine and whereby tools of the side head may be fed to the work upon the rotary table in conjunction with and in close proximity to the, vertical and horizontal moving tools of the front turret heads. A further and important object of the invention is to provide a saddle for a side head which is compact and rigid and form a firm support for the tool head carried thereby. It is also to be noted that the side head is hung directly on vertical ways or uprights of the front corner portion of the bed of the machine, thereby forming but one vertical slide joint between turret and bed which obviously insures accuracy for angular type of slide. The slide is thus brought nearer to the bed, the overhang of slide being less than heretofore, thus insuring a compact and more rigid combination. The slide is further mounted to operate radially with respect to the work table and center of work carried thereon. The design in its entirety is relatively simple in construction and is none the less rigid and durable. The saddle is carried in front of and in side of ways of bed, being slidably fitted to ways thereof and has fiat bearing surface on corner of bed to further support the saddle.
Claim:
In a lathe of the class described, the combination with a base and upright having vertical front and side ways, a rotary work table, a front turret head mounted above the 5z, table, a saddle including a front portion and a side portion engaging the ways, a slide mounted in the saddle and carrying a tool head adapted to be moved to and from the axis of the table, a vertically disposed threaded rod secured to the base, a rotatable sleeve carried by the saddle and engaging the threaded rod, power means for operating the sleeve upon the rod, to raise and lower the saddle and tool slide, and power means for feeding the tool slide longitudinally in the saddle and with respect to the axis of the table. |
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