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US Patent: 2,113,087
Manually operated pressure tool
John Jensen - Rockford, IL

USPTO Classifications:
269/248, 72/416, 72/454

Tool Categories:
metalworking tools : metal punches
metalworking tools : sheet metal tools
specialty tools : wire connector tools

Whitney Metal Tool Co. - Rockford, IL

Whitney Metal Tool Co. - Rockford, IL


Patent Dates:
Applied: Apr. 10, 1937
Granted: Apr. 05, 1938

Patent Pictures:
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"Vintage Machinery" entry for Roper Whitney, Inc.
"The invention relates to manually manipulable pressure tools such as splicing tools for wire, sheet metal shears, punches, and the like." It provides a recirculating ball mechanism to create "free-running antifriction gearing capable of extremely large force multiplication."

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