Complex sentence: In 1915, Wolf bought out Fox's interests and constructed a five story building in Altoona, Pennsylvania, renaming the company Wolf Furniture Company, then the largest furniture store between Pittsburgh and Harrisburg, Pennsylvania.
Split into simpler sentences: In 1915, Wolf bought out Fox's interests, constructed a new five story building in Altoona, Pennsylvania, and renamed the business Wolf Furniture Company. At that time, it was the largest furniture store between Pittsburgh and Harrisburg, Pennsylvania.