ABSTRACT
A Chicago firm, established in 1916 and incorporated in 1919. A specialty product was the Blood Tone Arm, named for its inventor, first advertised in January 1921. This device was compatible with lateral-cut or vertical-cut discs. It had a tapering design. Three months later the tone arm was renamed the Jewel (but in March 1923 the firm advertised in TMW that there were illegal imitators of the Blood Tone Arm being sold ). It seems that the name of the company also changed in 1921, to the Jewel Phonoparts Co. The final Chicago directory listing for Jewel was in 1929. At that time William T. Urles was president, and A.H. Davis was vice president.
