초록 ▼

A spraying apparatus of a type for dispensing a liquid chemical to crop land. A trailer adapted to be connected to a prime mover includes a frame attached thereto. A parallelogram actuating mechanism is provided for vertically adjusting the position of the frame and thereby spraying apparatus connec

A spraying apparatus of a type for dispensing a liquid chemical to crop land. A trailer adapted to be connected to a prime mover includes a frame attached thereto. A parallelogram actuating mechanism is provided for vertically adjusting the position of the frame and thereby spraying apparatus connected thereto with respect to the trailer and thereby with respect to the ground. A pair of folding spraying booms having spray nozzles thereon are pivotally connected to each side of the frame and an actuating mechanism is provided for moving the booms between an extended position for spraying and a retracted position folded along side the trailer for transporting from place to place.

대표청구항 ▼

Spraying apparatus for spraying a liquid, comprising: a frame; a first elongated member; means for pivotally connecting one end of said first elongated member to said frame along a substantially vertical axis; a second elongated member; means for pivotally connecting one end of said second elongated

Spraying apparatus for spraying a liquid, comprising: a frame; a first elongated member; means for pivotally connecting one end of said first elongated member to said frame along a substantially vertical axis; a second elongated member; means for pivotally connecting one end of said second elongated member to the other end of said first elongated member along a substantially vertical axis; spraying means attached to said first and second members for spraying a fluid; actuating means attached to said frame and to said first and second members for moving said first and second members between an extended and a retracted position, in said extended position for spraying said first and second members extending in a direction substantially transverse to the normal direction of travel of the spraying apparatus; and, in said retracted position, the first and sEcond members being folded together and being each substantially in line with the direction of movement of the spraying apparatus, for transportation from place to place; said actuating means including a strut means pivotally connected to said frame and to said second member; said actuating means further comprises means connected to said strut means for biasing said second member to said extended position in one position of said actuating means, and biasing said second member to said retracted position in another position of said actuating means; and said strut means comprising a first portion pivotally attached at one end thereof to said second member, an abutment member rigidly attached to said first portion, a second portion pivotally attached at one end thereof to said frame, an abutment portion disposed on said second portion, said biasing means comprising a coil compression spring disposed around said first portion and in abutment with said abutment member and said abutment portion, one of said first and second portions being reciprocally connected to the other of said first and second portions and means for limiting the amount of relative reciprocal movement between the first and second portions comprising: a rod connected to said first portion at one end thereof and slideably connected to the second portion at the other end thereof.