Thanks to Gerry Gill for finding the patent for this ingenious device that combined a damper regulator with a pressure gauge, water gauge, safety device. It was issued to B.R. Doody for low pressure steam and analogous systems in 1909.
Here is the original Installation and Operating Instructions and Parts List for The H.B. Smith Company's Oil Fired Cast Iron Hot Water Boilers (No. OHB-13W). This is esti...
The Henry Ford Museum in Dearborn, MI has an interesting hot-water heating system. Take a look at the radiators below. They are from the Shaw-Perkins Manufacturing Compan...
We estimate that this cast-iron boiler catalog from The Peerless Heater Company in Boyertown, PA is from the 1980s or 1990s.