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US Patent: RE8,586
Improvement in sash-cord guides
Patentees:
William H. H. Kesler (exact or similar names) - Baltimore, MD
Edward H. N. Clarkson (exact or similar names) - Baltimore, MD

USPTO Classifications:
16/215

Tool Categories:

Assignees:
Frank S. Clarkson - Baltimore, MD
Frank B. Sloan - Baltimore, MD

Manufacturer:
Not known to have been produced

Witnesses:
Frank B. Sloan
R. D. Williams

Patent Dates:
Applied: Jan. 03, 1879
Granted: Feb. 18, 1879

Reissue Information:
Reissue of 201,749 (Mar. 26, 1878)

Patent Pictures:
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"Vintage Machinery" entry for Joseph Clarkson & Son
Description:
This patent is of interest because a mortising machine was developed to produce the mortise required by this pulley; see patent RE9,221. Eventually both the pulley and mortiser patents were owned and used by C. Sidney Norris & Company of Baltimore, and were sold across the country.

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