.~ Tools relatively adjustable horizontally without causing vertical displacement {7}
646
.~.~ Laterally adjustable tools, independently free to move vertically
DEFINITION
Classification: 172/646
(under subclass 645) Apparatus in which the earth working elements are adjustable in a lateral direction and each earth working element is capable of free vertical movement independently of the other.
(1) Note. For the meaning of "adjustable" see the class definition.
(2) Note. Movement against a spring- biasing means is considered to be free movement under this definition. However, selective adjustment from one fixed position to another is not considered to be free movement.
