US Patent: 1,952,432
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| Grinding Machine
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Patentee:
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| Frederick S. Haas (exact or similar names) - Cincinnati, OH |
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Patent Dates:
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| Applied: |
Apr. 28, 1930 |
| Granted: |
Mar. 27, 1934 |
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Patent Pictures:
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1 | 2
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Joel Havens
"Vintage Machinery" entry for Cincinnati Grinders, Inc.
"Vintage Machinery" entry for Brown & Sharpe Mfg. Co.
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Description: |
| Abstract:
An object of the invention is the provision of 6 improved mechanism for actuating a movable slide of a machine tool organization. Another object of the invention is the provision of improved means associated with the tool slide of a machine tool organization to insure 0 the retraction of the slide to carry the tool a sufficient distance away from the work while same is being replaced so that no inadvertent engagement between the work and tool may occur. Another object of the invention is the provision of automatic mechanism for retracting and advancing a tool slide relative to the work which supplements the normal feeding mechanism of the slide. A further and specific object of the invention is the provision of a grinding machine having a grinding wheel slide movable toward and from the work including improved means supplementing the normal feeding means so that at the completion of the grinding operation and upon reversal of the feeding means a certain definite retraction of the slide takes place before the automatic retraction of the slide to permit replacement of a work piece in the machine.
Claim:
In a machine tool organization the combination of a bed, a slide carried thereby and movable relative thereto, means for actuating the slide at a slow rate including a shaft, means f or actuating the slide at a rapid rate including a piston, an hydraulic medium for actuating this piston, a shiftable reversing valve controlling the direction of flow of the medium and direction of movement of the piston, and means operatively connecting the valve with the shaft whereby actuation of the shaft in one direction effects instantaneous shifting of the valve and actuation of the shaft in the other direction effects a delayed shifting of the valve. |
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