The famous Leonard "Cleanable" Refrigerator came about after a mishap in the Leonard home: a pail of hot cooling lard was left inside an icebox on top of a cake of ice, resulting in melted ice, a spilled pail and cooled lard spilled all over.
Charles created his refrigerator with removable liners and flues.
In 1885, Leonard introduced metal shelves and improved the door-locking mechanisms.
1907 saw the introduction of porcelain lined interiors, which further enhanced the cleanability and sanitation of refrigerators.
The refrigerator cabinets were made of highly varnished carved-oak, brass fixtures, and enhanced with mirrors.