US 5,407,014 A · Gravel scarifying device

Abstract

A scarifier/grader apparatus comprises, in combination, a tractor connected through a 3-point hitch to a scarifier/grader attachment wherein: the tractor is adapted to be operably connected through a three point hitch to a scarifier/grader attachment comprising a scarifier including hydraulics for raising and lowering a plurality of scarifying teeth borne thereon in laterally pivotable relation on a bracket that is angled in a forward direction to improve the angle of attack; a grading blade having a mold board and a cutting edge; a second frame interconnecting the scarifier frame and the blade in mutually spaced apart relation with the scarifier in operably leading relation and the blade in operably trailing relation, wherein the scarifier includes height-adjusting hydraulics for selectively raising and lowering the plurality of scarifying teeth borne thereon relative to the cutting edge.

Claims9

Dependent claims

A scarifier comprising a plurality of supported, downwardly depending, axially secured scarifying teeth having substantial lateral free play at respective scarifying tip ends thereof:

wherein said scarifier includes a scarifying-tooth supporting frame having bracket means adapted to engage respective shank portions of a downwardly depending plurality of scarifying teeth in axially secured relation wherein said teeth have scarifying points at ends of respective ones of said teeth;
and
wherein said teeth and bracket means include interconnecting pivot pin means and said teeth are rotatable in a laterally extending plane, relative to said bracket, and within the limits of an arc of rotation set by pivot-arc-limiting blocks positioned on said bracket in mutually laterally spaced relation from respective ones of opposed sides of said shank portions.

A scarifier/grading device comprising in combination:

a scarifier frame including a plurality of scarifying teeth borne thereon;
a grading blade having a mold board and a cutting edge;
and,
a second frame interconnecting said scarifier frame and said blade in horizontally, mutually spaced apart relation with said scarifier in forwardly leading relation and said blade in trailing relation;
wherein said scarifier includes height-adjusting means for selectively raising and lowering said plurality of scarifying teeth relative to said cutting edge, and, wherein said teeth are mounted on an angled bracket means for engaging respective shank portions of said plurality of scarifying teeth;
said bracket means further angling said teeth at a forward attack angle of between 5 and 15 degrees from vertical;
and wherein said plurality of supported, downwardly depending, axially secured scarifying teeth are mounted to said scarifier frame by a means for allowing substantial lateral free play at respective scarifying tip ends thereof.

4 more elements

Dependencies are inferred from the claim text.

Gravel scarifying device

Life of this patent

Gravel scarifying device

Life of this patent

Abstract

Claims9