|Glen Miller posted|
1910 postcard of a rotary steam snow shovel on a Chicago and North Western train.The steam engine in the plow does nothing but turn the rotary. They pile on regular locomotives on the back to push it into the snow.
David Borck provided a video link. Since he said that it is still in use, and since video recording devices did not exist when the plow was first used, I assume the crew knew that railfans were watching. That would explain why the plow and the first engine firemen are putting too much coal on the fire to create all of that black smoke. In fact, at the beginning of the video, the first engine pushing the plow was running with a clear stack. But when he came around a curve and realized that railfans were watching, he turned the smoke black.
Union Pacific rotary video.
|Screenshot of video posting|
|Daniel C Carroll Jr. shared Old Images of Denver's photo|
View of the Colorado Midland Railway rotary snow plow on Hagerman Pass (Pitkin County), Colorado.
Between 1882 and 1896?
Is part of; History Colorado, William Henry Jackson Collection
|Chris Stivers posted|
Andrew Koetz From what I heard, when this rebuild was done, the traction motors in the front truck alone are for the blade movement alone, so indirectly they are not powered in the sense of say tractive effort. I would suggest that this unit is powered, but not powered for "self propulsion", due to the effort of grafting the plow onto the nose of the geep.
[Andrew also added some links of the plow before the rebuild: front, left+rear.]