The short, compact mill with the base above the overlays of the saw floor, originated with Prescott. Wood rims with rubber faces on the wheels were speedily abandoned by him, and wheels all of metal were brought into use, so that a filer in rolling tension into the saw had a clean wheel free from bunches of pitch and sawdust which stuck to the rubber faces and produced unbalanced wheels; but then everybody supposed that rubber faces were a necessity. Mr. Prescott demonstrated that the mill was vastly better without them. The late improvements made in frame constructions merely add stability without increasing the quality or extent of the output, this being entirely dependent upon a light weight of the top wheel with its shaft and boxing in combination with a straining lever system made as frictionless and sensitive as possible; for without these good conditions no band mill will render duty of the highest grade. Logically, then, the same principles and elements of construction have been embodied in all the splendid Band Saw Mills now built by The Prescott Company herein shown. [Illustration: STANDARD HEAVY BAND MILL Of 1910, for sawing logs] Of this type The Prescott Company builds the following sizes, both right and left hand, single or double cutting: Diameter of wheels 7 feet for saws 10 inches wide. ” ” ” 8 ” ” ” 12 or 14 inches wide. ” ” ” 9 ” ” ” 12 to 16 ” ” Next is shown the Pacific type of the Prescott Band Saw Mills for cutting large logs, having wheels 9 feet in diameter, and using saws from 12 to 16 inches wide. They are built for double cutting as shown, as well as for single cutting. Their dimensions are about as follows: Base 9′ 7″ by 11′ 7″. Maximum distance between guides 6′ 6″. Distance from saw line to column 4′ 6″. Maximum length of saw 53′ 6″. Weight from 42,000 to 45,000 lbs. When desired a steam cylinder is applied for operating the upper guide, and a reversing engine for adjusting the top wheel when changing saws. Their straining mechanism is exceedingly sensitive, their shafts are large, their boxes 18 inches long and water cooled; so that in every respect these mills are perfectly equipped, and a 20-inch double belt is necessary to drive them. * * * * * For the largest logs of the Pacific coast cut with a Band Saw Mill, The Prescott Company advanced to a mill of the same type but having wheels 10 feet in diameter for saws up to 18 inches in width. The base of this mill is 10′ 7″ by 14′ 6″. Maximum distance between guides 7′ 3″. Maximum length of saw 60′ 9″. Distance from saw line to column 5′. Weight from 54,000 to 58,000 lbs. The shafts are large with 20″ water cooled boxes. Steam is applied to operate the top guides and adjust the top shaft when desired. A 24-inch double belt is necessary to drive it. [Illustration: PACIFIC COAST, 9 FOOT SINGLE AND DOUBLE CUTTING BAND MILL]