US Patent: 521,055 - Slip-collar for pulleys, shafts, &c.


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US Patent: 521,055

Slip-collar for pulleys, shafts, &c.

Patentee:

Charles W. Shartle (exact or similar names) - Middletown, OH

USPTO Classifications:

403/344, 403/350, 403/362, 403/7, 74/617

Tool Categories:

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

Assignees:

Middletown Machine Co. - Middletown, OH

Manufacturer:

Middletown Machine Co. - Middletown, OH

Witnesses:

C. C. Donley

T. H. Mitchell

Patent Dates:
Applied:	Oct. 24, 1893
Granted:	Jun. 05, 1894

Patent Pictures:

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Vintage Machinery entry for Middletown Machine Co.

Description:

The 1891-02-07 The Age of Steel, page 6, has a small display ad for "Shartle's Safety Set Collars", which closely match this patent's design. The ad is from Middletown Machine Co.