Extensible screed and auger assembly for a road paving machine

• US 3,907,451 A
• Filed: 01/28/1974
• Issued: 09/23/1975
• Est. Priority Date: 01/28/1974
• Status: Expired due to Term

• Current Assignee: Raygo, Inc.
• Original Assignee: Kenneth A. Kuhl, Robert F. Fisher
• Inventors: Fisher, Robert F., Kuhl, Kenneth A.
• Primary Examiner(s): Stein, Mervin
• Assistant Examiner(s): Hawkins, Steven
• Application Number:
  US05/436,841
• Time in Patent Office: 603 Days
• Field of Search: 404/101,118,102,119
• US Class Current: 404/101
• CPC Class Codes: E01C 19/4873 Apparatus designed for railless operation
• CPC Class Codes: E01C 2301/16 Laterally slidable screeds

Abstract

The invention relates to a paving machine, and more particularly to an extensible screed and auger assembly for use thereon. The paver, which is self-propelled, includes a frame, a tiltable hopper having a discharge opening, a generally vertical center strike-off assembly connected to the frame and positioned rearwardly of the discharge opening, a pair of laterally extensible strike-off plates connected to the center assembly and a pair of rotatable augers positioned between the discharge opening and the strike-off plates. The augers are mounted on the side strike-off plates and coextend therewith relative to the center assembly.

Claims

1. A machine for spreading paving material comprising:

a. material transport means for transporting a quantity of paving material over a surface to be paved, b. said transport means including discharge means for depositing the paving material on the surface to be paved, c. extensible strike-off means connected to said transport means and positioned rearwardly of said discharge means for leveling and smoothing the paving material as it is deposited on the surface to be paved, d. said strike-off means including a laterally stationary first member and a second member connected to said first member for lateral movement relative thereto, e. a rotatable auger mounted on and carried by said second member and positioned between said discharge means and said strike-off means, and f. means for laterally extending and retracting said second member and said auger.

2. The machine of claim 1 and wherein:

a. said transport means includes a hopper, and b. said discharge means is an opening in said hopper.

3. The machine in claim 1 and wherein said first and second members include respectively first and second vertical plates connected for slidable lateral movement relative to each other.

4. The machine of claim 3 and wherein said auger is mounted substantially directly in front of said vertical plates.

5. The machine of claim 1 and wherein said strike-off means further includes:

a. a laterally stationary third member and a fourth member connected to said third member for lateral movement relative thereto, b. a second auger mounted on and carried by said fourth member.

6. The machine of claim 5 and including means for laterally extending and retracting said fourth member and said second auger.

7. The machine of claim 6 and including remotely controlled means for rotating said augers independently of each other.

8. A screed and auger assembly for paving machines comprising:

a. strike-off means for leveling and smoothing paving material which has been deposited on a surface to be paved, b. said strike-off means including a first strike-off member and a second strike-off member, c. material conveying means being mounted on said second member, d. means connecting said second member to said first member for permitting lateral rectilinear movement of said second member and said conveying means relative to said first member, e. said material conveying means being positioned forwardly of said strike-off means, and f. means for moving said second member and said conveying means linearly relative to said first member.

9. The assembly of claim 8 and wherein said material conveying means is an auger.

10. The assembly of claim 9 and wherein:

a. said first strike-off member includes a substantially vertical plate, and b. said second strike-off member includes a substantially vertical plate slidably mounted on said first member.

11. The assembly of claim 10 and wherein said means connecting said second member to said first member includes:

a. a hollow stabilizing member rigidly mounted to said first member, and b. an elongated connecting member rigidly connected to said second member and slidably disposed within said hollow member.

12. The assembly of claim 11 and wherein said means for moving said second membEr and said conveying means includes:

a. a hydraulic ram, and b. means connecting said ram between said first member and said connecting member to extend and retract said second member relative to said first member.

13. The assembly of claim 11 and wherein said means connecting said second member to said first member includes a bolt connected to one of said first or second members and passing through a slot in the other of said first or second members.

14. A screed and auger assembly for paving machines comprising:

a. strike-off means for leveling and smoothing paving material which has been deposited on the surface to be paved, b. said strike-off means including a first strike-off member and a second strike-off member, c. means connecting said second member to said first member for permitting lateral rectilinear movement of said second member relative to said first member between a fully retracted position and a fully extended position, d. means for moving said second member laterally between said fully retracted and said fully extended positions, and e. a rotatable auger mounted on and carried by said second member, f. said auger being completely supported by said second member and positioned forwardly of said strike-off means.