US Patent: 1,421,485 - Cone belt shifter


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US Patent: 1,421,485

Cone belt shifter

Patentee:

Emerald E. Jones (exact or similar names) - Chicago, IL

USPTO Classifications:

474/81

Tool Categories:

industrial machines : industrial machine mechanisms : industrial machine pulleys and belt drive mechanisms

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Helen F. Lillis

Joshua R. H. Potts

Patent Dates:
Applied:	Mar. 10, 1919
Granted:	Jul. 04, 1922

Patent Pictures:

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Vintage Machinery entry for Surty Guard Co.

Description:

The inventor had previous patents assigned to Surty Guard Co.; it is not known whether he had parted ways with that company, or whether this patent, was, in fact, used by them.