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US Patent: 2,567,641
Hydraulic work hold-down or clamp
Patentee: Merrill W. Hazelton (exact or similar names) - Cincinnati, OH USPTO Classifications: 269/23, 269/285, 92/130R, 92/258, 92/80, 92/86 Tool Categories: metalworking machines : metalworking machine mechanisms : hydraulic apparatus metalworking machines : metal shapers Assignees: Cincinnati Shaper Co. - Cincinnati, OH Manufacturer: Cincinnati Shaper Co. - Cincinnati, OH Witnesses: Unknown	Patent Dates: Applied: Jul. 28, 1949 Granted: Sep. 11, 1951 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Cincinnati Shaper Co.
Description: Improvements to patent 1,881,185 to prevent hydraulic oil leaking past the piston to drip onto the workpiece.

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