A FRUIT JAR COVER FITTED WITH AIR PUMP. curved or flaring forward end, while the rear end is steam. The steam cells open into a space at one side As the exclusion of air is a most important element cut out and adapted to fit closely around the rounded of the case, and at the other side they have… … to support, combustion. This invention has been patented raise the end. The guard also has downwardly pro- by: Mr. B. 8. Benson, 52 East Monument 8t., Balti- canning provide some means of attaining this object jecting side flanges, with aslightcurve upward at the with more or less completeness.…
Internet Archive · Public domain (published before 1931). Free to use for anything.
