Terry Chouinard sent me this advertisement he saw in the BBS Specimen Book (No. 25) for a “Vandercook Gordon Press Vibrator.” He asked if Vandercook made any other equipment for production presses? Good question. After all, their presses were marketed as pre-press equipment. But nothing in the catalogs I’ve seen references anything like the Gordon Vibrator.
Some time ago Daniel Morris gave me a CD of pdfs of Vandercook patents he found on Google Patents. After reviewing these files it appears that the vibrator and R.O. Vandercook’s first patent “Means for Dissipating Static Electricity” (1902), plus three for offset presses, were the only ones issued to his company for inventions not part of a proof/test press or plate making equipment. Hacker Manufacturing Co., acquired by Vandercook in 1937, held 14 U.S. patents for equipment that later became part of the Vandercook product line, notably their well known plate gauge.
Rather than uploading Daniel’s files, I’ve created a page with tables listing the patents issued to Vandercook and separate pages for Hacker and Challenge. Each feature links to the drawings and descriptions on Google.