US Patent: 3,348,836
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| Clamping means having hydraulic power assisting devices
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Patentee:
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| Walter Smierciak (exact or similar names) - Elgin, IL |
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Patent Dates:
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| Applied: |
Dec. 21, 1964 |
| Granted: |
Oct. 24, 1967 |
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Carl Matthews
"Vintage Machinery" entry for Wilton Corp.
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Description: |
| The Wilton PowRscrew hydraulic vise was intended for manufacturing use where the vise could be set to its "open" distance and then a lever would move the jaw hydraulically a maximum of 1/2" or so. The activation was rapid and the clamping force could be quite high. It was also quite complex and was one of several Wilton attempts at a hydraulically operated bench vise. |
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