Patent ID: 9546453
Date: 2017-01-17
CPC Classifications: E01B

Claim:
1. A method of tamping at least adjacent first and second sleepers of a track by at least first and second adjoining tamping units arranged one following the other in a longitudinal machine direction or working direction and designed to be lowered independently of one another, wherein an inner sleeper crib is disposed between the first and second sleepers and first and second outer sleeper cribs are disposed outside the first and second sleepers, respectively, wherein the first tamping unit has a first inner tamping tine and a first outer tamping tine and the second tamping unit has a second inner tamping tine and a second outer tamping tine and the first and second inner tamping tines are provided for immersion into the inner sleeper crib and the second outer tamping tines are provided for immersion into the first and second outer sleeper crib respectively, wherein the method comprises: joint lowering of the first and second adjoining tamping units for tamping the first and second sleepers adjacent in the longitudinal direction of the machine; and wherein the joint lowering takes place with a time delay between lowering of the first tamping unit and lowering of the second tamping unit, during the joint lowering.