McKenna Process Company
Plant formerly located in Joliet, Illinois - ca. 1920.
Image 10 - Hot rail entering the leading rolls
Hot rail enetering the leading rolls - Overall
Image 10. Hot rail entering the Leading Rolls.  
A workman is stooping at the furnace door to pull
out another rail.


Details scanned from the original print:

a. Hot Rail Entering Rolls-Overall
b. Cropped View
c. Detail
d. US Patent No. 522,228 by Edward W. McKenna
e.
US Patent No. 635,577 by Edward W. McKenna

The men tending the furnace did not have to handle the
rails by mean strength alone. Edward W. KcKenna thought
of that, as shown in his US Patents No. 522,228 and 635,577.
Hot rail entering leading rolls - Cropped View
Cropped View  The man tending the furnace at right did not 
have to pull each rail out of the furnace by mean strength
alone. The image below shows that he is attaching a clamping
device that is hooked up to a cable:
Hot rail entering rolls - Detail of Withdrawing Mechanism at Right
Note also that he is standing between the conveyor rolls !
Mckenna Patent No. 522,228 - Rail lengthening
US Patent No. 522,228 by 
Edward W. McKenna

This part of the patent drawing shows
that the rails are elongated by the rolls
just enough to permit the cropping of
the battered rail ends and worn bolt holes.
Hot rail entering rolls - Detail of McKenna Patent 522,228 showing furnace
US Patent No. 522,228 by 
Edward W. McKenna

This furnace detail suggests that the
patent allows for rail transport by
roller conveyor.
Hot rail entering firnace - Detail of McKenna patent 635,577 showing transport layout
US Patent No. 635,577 by 
Edward W. McKenna

Even though the patent drawing shows
a mirror image of the actual McKenna
plant layout, the resemblance is quite
clear.