Charles Bauman’s Meat Shop was a thriving business in Belleville, Illinois. The business placed this ad in The Semi-Weekly Advocate, the local paper, on Friday, Sept 26, 1879:

BAUMANN’S EXCELSIOR MEAT ROASTER

“This apparatus is an air-tight chest or box, which must be put in the baking part of the Cooking stove. By this mode of Roasting or Baking, meats will cook as tender as mutton. Poultry of all kinds cooked in this way is the most palatable and delicious ever produced by any other mode of cooking and as regards economy this chest cannot be excelled. The cost of this apparatus will be more than saved in three or four months from the fact that butter, (by the way, a large item in the course of a few years) as the essence from the meat forms a most delicious gravy, by a distilling process. The chest if made of the best quality of sheet iron, on a self-sealing principle. Any housewife who gives it a fair trial will not do without it. The cost of the Apparatus is very small, from the fact that it is very durable. If well cared for it will last from ten to fifteen years.            320 East Main Street, Belleville, Ill. 

This image is the best I could find for a Baumann’s Excelsior Meat Roaster. 

Likely not correct but surely close?