US Patent: 113,729 - Improvement in shaft-couplings


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US Patent: 113,729

Improvement in shaft-couplings

Patentee:

James H. Blessing (exact or similar names) - Albany, NY

USPTO Classifications:

292/238

Tool Categories:

industrial machines : industrial machine mechanisms : shaft keys

industrial machines : industrial machine mechanisms : industrial machine shaft couplings

Assignees:

Townsend & Jackson - Albany, NY

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Granted:	Apr. 18, 1871

Patent Pictures:

USPTO (New site tip)
Google Patents
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Vintage Machinery entry for F. & T. Townsend Foundry

Description:

This design simplifies the coupling body but requires a difficult-to-manufacture shaft key. That seems like a poor trade-off as the key is the expendable part when the coupling is overloaded.