29. Basic 4/4 Dreadnaught
steel end with small
side darts between large
corrugations applied to
Frisco boxcar in late 1920s.
29
30. Two-panel 5/5
Dreadnaught end with
lumber door in upper
panel.
30
were also installed in car ends [5 and 12]. Boxcars designed to
transport automobiles frequently had full-width end doors to
ease handling their intended lading [32].
Dreadnaught ends
The Dreadnaught stamped steel car end was introduced in
1925 by Union Metal Products, a company under the control of
Standard Railway Equipment Company since the early 1920s.
The distinctive new end featured large horizontal ribs that
tapered toward the sides. For added rigidity, short darts from
