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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
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FR571400D1923-10-011923-10-01Appareil permettant le soufflage des traverses de chemins de fer
ExpiredFR571400A
(fr)