Of course, the name tag shown above – Saylor-Beall – identifies the manufacturer.
James, Saylor-Beall is still in business, and contact information is available on this site on this page.
They might like to see the photos too and can provide a wealth of information about your compressor, I’m sure.
The motor is perhaps under-rated and for continuous duty, as it draws 3/4 HP worth of juice, but looks like it’s rated for only 1/4 HP, so should run pretty cool. Ditto the pump because it’s a S-B.