Chicago House Wrecking Company · Chicago House Wrecking Company · leaf 65
Adjustable Elbow Figure 3.Figure 2 shows our No. 14 stack head,which is used for a second floorregister. It is laid flat between the jointswith the square flange projecting up andfastened to the opening in the floor andthe register sets right into this square- opening. It is necessary to use a…
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-254-107.webp)
