| US Patent: 217,176 
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| Improvement in apparatus for regulating pressure in fermenting-casks | 
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| Patent Dates: |  
| Applied: | Apr. 04, 1879 |  
| Granted: | Jul. 01, 1879 |  USPTO (New site tip)
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                        Jeff Joslin
 Vintage Machinery entry for Ulscht & Linn
 
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| Description: |  | An 1884 book, "Commerce, Manufactures & Resources of Rochester, N.Y.", mentions that Ulscht & Linn manufactured "the firm's own Patent Pressure Regulator for Brewers, an invaluable invention to the manufacture of malt liquors."Co-inventor David Lang was a cooper special in brewers' and wine casks. |  |