US Patent: 45,054 - Improvement in screw-cutting machines


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US Patent: 45,054

Improvement in screw-cutting machines

Patentee:

L. W. Langdon (exact or similar names) - Northampton, MA

USPTO Classifications:

29/45, 29/57

Tool Categories:

metalworking machines : screw machines

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Charles Strang

David E. Grimes

Patent Dates:
Granted:	Nov. 15, 1864

Patent Pictures:

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Description:

The inventor manufactured miter boxes and this patent appears to be somewhat of an anomaly for him. However, this patent and Francis Curtis's patent 120,044 were called out in "Methods of Machine Shop Work", by Frederick A. Halsey, 1914, page 173, as notable predecessors to Christopher Spencer's patent 275,431, which is seen as advancing the development of the turret lathe to "practical usefulness".