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US Patent: 922,371
Boring Machine
Randolph Winkler - Covington, KY

USPTO Classifications:
173/30, 408/124

Tool Categories:
woodworking tools : hand drills : corner drills



George C. Kolb
Robert L. Zeidler
Benjamin Joffe
William J. Sperl

Patent Dates:
Applied: Nov. 30, 1908
Granted: May 18, 1909

Patent Pictures: [ 1 | 2 ]
All patent images are included in this condensation.
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Martin J. Donnelly Antique Tools
Munn & Co.- patent attorneys

The primary object of the invention is to provide a boring machine which is free from clamps or levers, which would conflict with the brake connections, camber rods and floating levers such as are customary in freight cars. It is a further object of my invention to provide a boring machine which may be held in position by the knees or legs of an operator sitting underneath the car, thereby enabling him to use both hands to drive the bit, or else use one hand to drive the bit and one to produce lever pressure. A further object is to provide a boring machine with removable handles and removable pressure-sustaining devices, so that one side of the boring machine may be entirely free from any lateral projections.

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