Thanks to Frank "Steamhead" Wilsey for finding and sharing this one with us. Here are his comments about this piece from 1912: "As nearly as I can figure, the 'Doody Attachment' was a float-type damper regulator that worked something like the Broomell and VECO regulators. However, this one was not connected to the dry return to act as a receiver for water and air. Air was vented through special Doody vents installed on each radiator. These were designed to allow some steam to escape to humidify the rooms. The Doody equipment could be installed on a one-pipe steam system. In this case the vents were installed in the usual radiator tappings. When used on a two-pipe system, the vents were installed in special Doody return elbows. So the Doody could be used to retrofit older installations as well as in new heating systems."
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.