| US Patent: 99,212 
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| Improvement in clamp | 
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| Patentee: |  |
 | Jacob S. Ladow (exact or similar names) - Mechanicsville, NY |  
 
 
 
 
 
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| Patent Dates: |  
| Granted: | Jan. 25, 1870 |  
 
USPTO (New site tip)| Patent Pictures:
	      
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                        Carl Matthews
 "Vintage Machinery" entry for Rowley & Hermance Co.
 
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| Description: |  | An example of this patent is seen in the January 1894 Manning, Maxwell & Moore catalog, page 532. There is no maker's name but the patent date is clearly legible. We found a later version in a 1925 Yates-American catalog and then in a 1905 Y-A catalog where it was labeled as the "R & H Special Heavy Door Clamp". On page 34 of the 1882 Rowley & Hermance catalog is the same artwork as in the MM&M catalog except that the right side casting has the words "LADOW'S PAT. / ROWLEY & HERMANCE MNFRS / WILLIAMSPORT". |  |