US Patent: RE8,586
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| Improvement in sash-cord guides
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Patentees:
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| William H. H. Kesler (exact or similar names) - Baltimore, MD |
| Edward H. N. Clarkson (exact or similar names) - Baltimore, MD |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 03, 1879 |
| Granted: |
Feb. 18, 1879 |
| Reissue Information: |
| Reissue of 201,749 (Mar. 26, 1878) |
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Jeff Joslin
"Vintage Machinery" entry for Joseph Clarkson & Son
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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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