E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
E01C19/282—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows self-propelled, e.g. with an own traction-unit
Pedalier pour deux manivelles de sept a trente pouces, permettant a tout moment la permutation immediate de la force motrice d'une manivelle a l'autre, avec des valeurs elevees du couple minimum