ROADWAY SLOPING ATTACHMENT FOR ASPHALT PAVING MACHINE

• US 3,680,451 A
• Filed: 06/15/1970
• Issued: 08/01/1972
• Est. Priority Date: 06/15/1970
• Status: Expired due to Term

• Current Assignee: Ralph D. Birtchet
• Original Assignee: Ralph D. Birtchet
• Inventors: Birtchet, Ralph D.
• Primary Examiner(s): Nackenoff, Jacob L.
• Application Number:
  US05/046,239
• Time in Patent Office: 778 Days
• Field of Search: 94/44,45,46
• US Class Current: 404/104
• CPC Class Codes: E01C 19/187 solely for spreading-out or striking-off deposited mixtures, e.g. spread-out screws, strike-off boards
• CPC Class Codes: E01C 2301/20 Screed or paver accessories for paving joint or edge treatment

Abstract

An attachment for an asphalt paving machine which permits the machine to slope the outer edge of a roadway to a desired angle. A material spreading assembly in disclosed which includes a pivoted blade having means for adjusting the angle of the lower surface of the blade relative to the bottom line of the strikeoff board. The pivoted blade portion is located between the end gate and the main blade (or board) so that the assembly when attached to a paving machine serves to lay down an angled shoulder to the roadway as a part of the continuous surface laying operation.

Claims

1. A roadway sloping assembly for an asphalt paving machine comprising in combination:

a first elongated blade having a substantially straight lower edge and an outer end;

a support frame;

a second elongated blade positioned immediately adjacent to and aligned with said first blade, said second blade having a bottom edge and first and second ends;

pin means pivotally connecting said second blade to said frame at a location near said first end;

adjustment means connected to said second blade and to said frame for adjusting the angular position of said second blade relative to said first blade; and

support means connected to said frame and supporting said frame and second blade adjacent said outer end of said first blade.

2. The apparatus of claim 1 wherein a first section of the lower edge of said second bLade from a point below said pin means extending in an outward direction to said first end is disposed at an upward angle relative to the remainder of the bottom of said second blade.

3. The apparatus of claim 1 wherein said first end is arcuate with the center of curvature located at said pin means.

4. A roadway sloping assembly for an asphalt paving machine comprising in combination:

a first elongated blade having a substantially straight lower edge and an outer end;

a second blade having a lower edge defined by first and second sections which are each substantially straight and intersect at an obtuse angle;

said first section being shorter than said second section and extending to a first end of the second blade;

blade support means including pivot means pivotally supporting said second blade on said support means;

means connected to said support means for moving said support means laterally relative to said first blade to selectively position said second blade near the outer end of said first blade with said pivot means aligned with said outer end; and

adjustment means connected to said second blade and to said blade support means for rotating said second blade about said pivot means with said first section of said second blade being selectively aligned parallel to and in line with said lower edge of said first blade or at an angle with respect thereto.

5. The apparatus of claim 4 including adjustment means connected to said second blade for selectively lowering or raising said lower edge of said second blade relative to said support means.

6. A roadway sloping assembly for an asphalt paving machine comprising in combination:

a support frame, an elongated blade having a bottom edge and first and second ends;

pin means pivotally connecting said blade to said frame at a location near said first end, said first end being arcuate with the center of curvature located at said pin means, a first section of the bottom edge of said blade from a point below said pin means extending in an upward angle relative to the remainder of the bottom edge of said blade and the distance from said pin means to said first section along a line perpendicular to said first section being less than the radius of curvature of said first end;

adjustment means connected to said blade and to said frame and operable to adjust the angular position of said blade relative to said frame; and

extensible support means connected to said frame and adapted for connection to an asphalt paving machine with said blade aligned with the main asphalt spreading member of the machine.

7. The apparatus of claim 6 including a protection block secured to said support frame adjacent said first end of said blade and having an arcuate surface adjacent said first end.