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US Patent: 2,211,050
Woodworking machine
Drill press
John E. Boice - Toledo, OH

USPTO Classifications:
144/92, 248/660, 474/79

Tool Categories:
electrical devices : electric motors : motor mounts
woodworking machines : wood drilling and boring : drill presses
metalworking machines : drilling and boring : drill presses


Delta Manufacturing Co. - Milwaukee, WI
Boice-Crane Co. - Toledo, OH


Patent Dates:
Applied: Feb. 02, 1937
Granted: Aug. 13, 1940

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Delta Manufacturing Co.
"Vintage Machinery" entry for Boice-Crane Co.
"The invention is directed particularly to the problem of easy shifting of the belt drive so as to change the speed ratio between the driving and the driven pulley. To this end, it provides a motor that is swingingly mounted on the frame of the press in such a manner that gravity, i.e., the weight of the motor, keeps the belt taut, and which may be moved to a position to release the belt by simply grasping a lever and pulling toward the operator."

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