(under the class definition) Apparatus in which a means is provided for excavating or picking up the aggregate-type ballast of a railroad bed and (1) classifying said aggregate into different groups according to size, shape, weight or other physical characteristics, and/or (2) dividing from said aggregate undesirable matter such as weeds, dirt, trash or like debris.
(1) Note. Included are devices which may or may not return the ballast to the road bed.
SEE OR SEARCH CLASS
37, Excavating, appropriate subclasses, especially
104, for similar devices wherein the claims are limited to ballast excavating or road grading means, per se.
104, Railways, appropriate subclasses, especially
2+, for ballast cleaners combined with means for handling railroad track or ties. 209, Classifying, Separating, and Assorting Solids,
233+, and 509+ for assorting and sifting devices, respectively, of general utility.
299, Mining or In Situ Disintegration of Hard Material,
7+, for subject matter relating to excavating or breaking up hard material in situ and separating valuable constituents thereof.
