JOHN ALLEN HEANY, OF YORK, PENNSYLVANIA, ASSIGNOR TO THE TETER-HEANY DEVELOPING COMPANY, OF CHARLESTON, WEST VIRGINIA, A CORPORATION OF WEST VIRGINIA. ELECTRIC-ARC LAMP. SPECIFICATION forming part of Letters Patent No. 761,379, dated May 31, 1904. Application filed December 4, 1903, Serial No, 183,703, (No model.) To all, uhon, it may concern: