| US Patent: 578,764 
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| Device for Tightening Gage-Bars | 
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| Patentee: |  |
 | Nels Nelson (exact or similar names) - Attleborough, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Apr. 22, 1896 |  
| Granted: | Mar. 16, 1897 |  USPTO (New site tip)
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                        Ralph Brendler
 
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| Description: |  | This patent is not for a marking gage, but rather for a method
	 of tightening gage heads that could be used on a marking gage
	 or similar tool.
	 The idea here is fairly simple-- a bent level rides in a tight
	 slot such that it forces the side of the slot into the gage arm.
	 These would be cheap to produce, and probably would work well. |  |