His elevator ran faster and with larger sized masses than hydraulic or steam elevators. 584 of Sprague's elevators were being set up prior to he sold his company on the Otis Elevator Organization in 1895. Sprague also created the idea and technological innovation for many elevators in only one shaft. https://holdensahm29629.qowap.com/92094164/maximizing-space-and-efficiency-with-attic-storage-lifts