Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of IT454054ApublicationCriticalpatent/IT454054A/it
E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast
E01B27/13—Packing sleepers, with or without concurrent work on the track
E01B27/16—Sleeper-tamping machines
E01B27/18—Sleeper-tamping machines by introducing additional fresh material under the sleepers, e.g. by the measured-shovel method, by the blowing method
E—FIXED CONSTRUCTIONS
E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
E01B2203/00—Devices for working the railway-superstructure
E01B2203/06—Placing ballast
E01B2203/067—Special methods for posing or quantifying ballast
