Red Devil coal loaders were used in both Alamosa and Antonito to load steam engines. They did not have the same construction. You can see some differences between the two if you compare photos. I have not seen any drawings for any of the two but there is lots of photos available through Internet.
This is a link to one of the photos:
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Red Devil Coal Loaders sometimes were used to load steam era freight cars, as well as to load steam era locomotive tenders with coal hauled in steam era freight cars. I am looking for steam era diagrams of Red Devil Coal Loaders or steam era advertising or other promotional materials plainly showing what a Red Devil Coal Loader looked like. Any suggestions? Google comes up with nothing.