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US Patent: 1,709,233
Mechanical movement
Patentee:
Oscar Christian Schroeder (exact or similar names) - Chicago, IL

USPTO Classifications:
235/61L, 475/218, 74/348

Tool Categories:
metalworking machines : metal lathes : metal lathe accessories and attachments

Assignees:
Oscar Christian Schroeder - Chicago, IL
Hardinge Brothers, Inc. - Chicago, IL

Manufacturer:
Hardinge Brothers - Chicago, IL

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 18, 1920
Granted: Apr. 16, 1929

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Hardinge Brothers
Description:
Quick-change threading box.

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