Steam Made Ice Cream

In the early 1900's steam manufactured Ice Cream was widely advertised.  Instead of being handcranked the crank was replaced by a pulley and that was hooked to a steam engine and turned.  Those Ice Cream Plants next to a rail line would also advertise they would ship anywhere by train. 
You tube has a number of videos showing ice cream made by steam but I found few still photographs of the process .
http://wn.com/steam_powered_ice_cream_maker

In some cases gasoline engines were used to churn the ice cream

as electric lines and improved electric motors became available steam engines would be replaced