US Patent: 1,250,512
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| Valve-Grinding Tool
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Patentee:
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| Jacob B. Rose (exact or similar names) - Cleveland, OH |
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Patent Dates:
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| Applied: |
Dec. 04, 1916 |
| Granted: |
Dec. 18, 1917 |
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Patent Pictures:
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Jacob B. Rose patent Dec. 18, 1917 |
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Stan Schulz
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Description: |
| A swinging yoke actuated by the crank oscillates the shaft with the valve-engaging bit. Many of the parts are made of sheet metal stampings.
Marketed as the MARVEL JR. with a set of interchangeable bits by the Marvel Accessories Mfg. Co., Cleveland, OH. |
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