The SPMW 7221 (SPMW 221) Rotary Snow Plow
Between 1885 and 1903 the Leslies built 64 plows before selling the rights to the American Locomotive Company (ALCO). From 1905 to 1937 ALCO built 71 more plows. One of these was the SPMW 7221, built at the ALCO Cooke Locomotive works in Schenectady, New York in 1917 and delivered later that year to Southern Pacific Railroad in Sacramento.
In order to clear the rail of snow, a rotary plow had to be lowered off its wheel assemblies, known as the trucks. During snow plowing operations, the bottom of the plow rides 3 inches off of the top of rail.
Rotaries were originally powered by a steam locomotive engine driving a ring and pinion system. The SPMW 7221 was converted to electric power to turn the blade in 1966 and was renumbered the SPMW 221, as was the practice with all of the rotaries after they were "electrified.
The SPMW 221 was stored in Roseville for many years, where it was maintained to battle heavy winter storms over Donner Summit, a key east-west corridor for moving both freight and passengers.
This SPMW 221 was last operated by Unfon Pacific in the 1980's. It was donated to the City of
The City of Roseville would like to thank Union Pacific Railroad, Union Pacific Roseville
Locomotive Facility, Union Pacific Foundation, the Roseville Community Development
Corporation, Jim Dobbas, Inc., WestCon General Contractors and Livingston Concrete for
their work and donations to make this display possible.
Topics. This historical marker is listed in this topic list: Railroads & Streetcars. A significant historical year for this entry is 1885.
Location. 38° 45.126′ N, 121° 16.898′ W. Marker is in Roseville, California, in Placer County. Marker is at the intersection of Atlantic Street and Vernon Street, on the right when traveling south on Atlantic Street. Touch for map. Marker is in this post office area: Roseville CA 95678, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Southern Pacific Railroad No. 2252 Steam Locomotive (within shouting distance of this marker); Garbolino Building (about 700 feet away, measured in a direct line); Railroad Hobbies Building (about 800 feet away); Eagles Hall (approx. 0.2 miles away); Barker Hotel (approx. 0.2 miles away); Roseville’s First City Hall (approx. 0.2 miles away); Farlow Building (approx. 0.2 miles away); Bank of Italy Building (approx. 0.2 miles away). Touch for a list and map of all markers in Roseville.
Also see . . .
1. Rotary Snowplow (Wikipedia). (Submitted on June 17, 2019.)
2. Rotary Snow Plow (YouTube, 6 min.). (Submitted on June 17, 2019.)
Credits. This page was last revised on June 17, 2019. It was originally submitted on June 17, 2019, by Andrew Ruppenstein of Sacramento, California. This page has been viewed 281 times since then and 65 times this year. Photos: 1, 2, 3, 4, 5. submitted on June 17, 2019, by Andrew Ruppenstein of Sacramento, California.