Vanderman Manufacturing Co.

Appears to have been founded in 1878 by William Vanderman in Willimantic, CT.  Here's a brief historic review on the Nesci Enterprises Website.  They predominately produced strong boxes and pipe / steamfitter vises.

This article from the June, 1908 edition of Engineering Review notes that the company was first organized as the Vanderman Plumbing & Heating Co. and reorganized as the Vanderman Manufacturing Co. in 1892.

Here are the results of a Google search on William Vanderman patents.

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Here's an example of a #1 Pipe Vise courtesy of Skip and posted here on Tool Talk.