This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
At times bread, meat, or other food, placed in ordinary baking pans in the oven becomes burned on the bottom. If the detachable metal strips shown in the sketch are placed on the pan, this will not happen, as the pan does not come in direct contact with the oven floor.
The attachment can be placed on agate ware or sheet-iron pans of any length. The shoes are made from light V-shaped metal strips and in two parts, as shown, with the edges of one part lapped over so that the other strip will slide in it.
Ill: Shoe and How It is Attached to the Pan