McKenna Process Company
Plant formerly located in Joliet, Illinois - ca. 1920.
Image 17 - Cold straightening with press and hammer face
Cold straightening with press and hammer face - Overall
Image 17. Cold Straightening with press and hammer 
face.
This is a new method which does away with the
narrow
"gag" by substituting a broad hammer face
which
delivers a distributed, instead of a concentrated,
blow
upon the rail.

Details scanned from the original print:

a. Overall image
b. Detail Of Straightener
c. Details Of Machine
d. Gears & Belts
e.
Detail - Bates Machine Co. (also a Joliet firm)
f. Straighteners Face
g. Comparison with
U.S. Patent No. 1,314,877
by George Langford, Sr.
Detail Of Straightener
Cold straightening with press and hammer face - Straightener
Straightener's Face

Cold straightening with press and hammer face - Straightener's Face
Details Of Machine

Cold straightening with press and hammer face - Machine Detail
Gears & Belts

Cold straightening with press and hammer face - Gears and Belts
Detail - Bates Machine Co. 
(also a Joliet firm)



Cold straightening with press and hammer face - Bates Machine Co.
Comparison with U.S. Patent No. 1,314,877 by George Langford, Sr.
Cold straightening with press and hammer face - Patent Comparison
Cold straightening with press and hammer face - US Patent 1,314,877