A related site is Burch Popcorn Machine. Although not as complete as
this site, its goal is the same. Burch Manufacturing Company was the name
used until Manley changed its name in 1940.
Apparently there were two types of top covers. One was of thinner
aluminum (approximately 20 gauge). That is depicted in the above
drawing, and the photo below:
A second type of top cover uses a thicker aluminum, but the aluminum is
not folded on the edges. Also, the holes are identical.
