ROTARY BLADE FOR MEAT GRINDER

• US 3,646,979 A
• Filed: 07/01/1970
• Issued: 03/07/1972
• Est. Priority Date: 07/01/1970
• Status: Expired due to Term

• Current Assignee: Eugene A. Anderson
• Original Assignee: Eugene A. Anderson
• Inventors: Anderson, Eugene A.
• Primary Examiner(s): Abercrombie, Willie G.
• Application Number:
  US05/051,645
• Time in Patent Office: 615 Days
• Field of Search: 146/189R,189A,182
• US Class Current: 241/82.5
• CPC Class Codes: B02C 18/362 Knives

Abstract

A meat grinder in which a worm conveyor on a horizontal shaft feeds the meat to be ground toward a rotary blade or chopper provided with radially extending blade arms. The blade arms move in a rotary path and cooperate with the surface of the perforated plate for cutting or chopping action. Each blade arm has a wedgeshaped blade block provided with outwardly converging surface portions with one surface portion having a straight leading cutting edge for riding on the surface of the plate. This cutting edge is disposed forwardly of and substantially parallel to the radial axis of the blade arm. The wedge-shaped blade blocks assure even wearing of the blade blocks against the plate.

Claims

1. In an improved rotary blade for use in a grinder having a perforated plate wherein the blade is adapted to be rotated about its axis adjacent one face of the perforated plate for chopping material urged against the plate, the improved blade comprising;

a blade hub portion, at least one blade arm extending radially from said hub, a blade block carried by said arm, said blade block detailed to include radially outwardly converging surface portions and wherein one of said surface portions defines a cutting edge for riding against said face of said plate for chopping material.

2. In an improved rotary blade as described in claim 1 further characterized in that said blade block has a trailing surface portion tapering outwardly with respect to said cutting edge.

3. In an improved rotary blade as described in claim 1 further characterized in that said blade block is wedge shaped and tapers outwardly.

4. In an improved rotary blade as described in claim 1 further characterized in that said blade block is provided with a face surface portion having a relief angle with respect to the radial plane of said axis of rotation of between approximately 30* and approximately 90*.

5. In an improved blade as described in claim 1 further characterized so that the inner end of said blade block is spaced outwardly of said axis of rotation and said blade block is wedge shaped having the wider portion thereof closest to said axis of rotation, with the narrower portion extending radially outward.

6. In an improved rotary blade as described in claim 1 further characterized in that said cutting edge is forward of the radial axis of its associated blade arm in the direction of rotation of the blade and substantially parallel to said radial axis.

7. In an improved rotary blade as described in claim 1 further characterized in that each of said blade blocks includes a front face and a bevelled surface intersecting to form said cutting edge.

8. In an improved rotary blade as described in claim 7 further characterized in that said front surface is inclined rearwardly and wherein said bevelled surface is disposed at an acute angle to the radial plane of said rotary blade.

9. In an improved rotary blade as described in claim 7 further characterized in that the angle subtended between said front surface and bevelled surface is between approximately 60* and approximately 90*.

10. In an improved rotary blade as described in claim 9 further characterized in that said blade block is provided with a face surface intersecting said bevelled surface, said face surface being rearwardly of said bevelled surface and disposed at a greater angle to said radial plane than said bevelled surface.

11. In an improved rotary blade as described in claim 10 further characterized in that said acute angle between the radial plane and said face surface is between approximately 6* and approximately 30*.