US Patent: 1,696,468 - Multiple-spindle drill head


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US Patent: 1,696,468

Multiple-spindle drill head

Patentee:

Joseph F. Buhr (exact or similar names) - Detroit, MI

USPTO Classifications:

74/665.0GA, 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:

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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.