US Patent: 4,594,779
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| Punch and die adapter
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Patentee:
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| Kenneth Hagemeyer (exact or similar names) - Rockford, IL |
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Patent Dates:
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| Applied: |
Nov. 01, 1984 |
| Granted: |
Jun. 17, 1986 |
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Jeff Joslin
Vintage Machinery entry for Ex-Cell-O Corp.
Vintage Machinery entry for Greenlee Brothers & Co.
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Description: |
| This adapter is for use when punching a relatively large hole in thin sheet metal. It avoids an extra step of enlarging the pilot hole to accept a larger-diameter draw stud. This patent number has been seen in a 1988 Greenlee catalog, for their Nos. 7804SB and 7806SB Quick Draw Hydraulic Punch Drivers. |
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