I'm going to guess that is some sort of luggage holder, or half of a luggage holder.
"The Bellevue Manufacturing Company was originally the Conway Steel Range Company. In 1915, they began to manufacture automobile parts, such as, bumpers, luggage carriers, gasoline gauges and windshield wipers. During the depression, they started manufacturing products, such as, refrigerator panels, metal card tables and apartment size electric ranges. In 1937, the company announced that they had developed two new types of automobile filters: the Fram Oil and Motor Cleaner and a filter for the Lincoln Zephyr. Today, the company's only line is the oil filter."
http://us.kompass.com/c/bellevue-mfg...-the/us806861/