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US Patent: 1,696,468
Multiple-spindle drill head
Patentee:
Joseph F. Buhr - Detroit, MI

USPTO Classifications:
74/665GA, 74/665R, 74/86

Tool Categories:
metalworking machines : drilling and boring : drill presses : multiple spindle drill presses

Assignees:
None

Manufacturer:
Buhr Machine Tool Co. - Ann Arbor, MI

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 06, 1924
Granted: Dec. 25, 1928

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Buhr Machine Tool Co.
Description:
Buhr Machine Tool Co. specialized in high-speed multi-spindle drilling machines for automotive manufacturing. Their machines tended to be specialized for particular operations such as boring holes in engine blocks for valve guides.

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