Patent Document

BACKGROUND OF THE INVENTION 
       [0001]    1. Technical Field 
         [0002]    This invention relates to machines that will reduce waste material into smaller pieces for reuse, specifically knife blades that use multiple replaceable teeth for engagement with bed blade assemblies. 
         [0003]    2. Description of Prior Art 
         [0004]    Prior art devices of this type have a movable blade and fixed blade engagement surfaces wherein blades rotate engaging material and cut it into smaller pieces, an example of same can be seen in U.S. Pat. Nos. 3,982,704, 4,797,977, 6,375,106 and 8,616,481. 
         [0005]    U.S. Pat. No. 3,982,704 is directed to a grinding disk for disk mills that have multiple annular rings with a plurality of saw teeth removably secured thereto. 
         [0006]    U.S. Pat. No. 4,797,977 claims a picker assembly having multiple hook teeth secured on a moving mounting bar. 
         [0007]    U.S. Pat. No. 6,375,106 illustrates a waste reduction machine with replaceable teeth mounted radially on a hub. 
         [0008]    U.S. Pat. No. 8,616,481 discloses a drum associated with a tooth kit having multiple upstanding teeth positioned on a mounting bar and is removable from the drum for replacement. 
       SUMMARY OF THE INVENTION 
       [0009]    A blade assembly set for material shredding and grinding having a movable engagement blade with interchangeable teeth and a fixed bed blade for registration therewith. The bed blade progressively intermeshes with each of the multiple blade edges providing for multiple engagement points for enhanced shredding and progressive reduction of waste pieces defined material into smaller processing size in a single stage processing step for reuse, specifically in the recycling industry. 
     
    
     
       DESCRIPTION OF THE DRAWINGS 
         [0010]      FIG. 1  is a side elevational view of the movable shredding blade of the invention. 
           [0011]      FIG. 2  is an enlarged end elevational view thereof. 
           [0012]      FIG. 3  is an enlarged side elevational view of a replaceable knife insert therefore. 
           [0013]      FIG. 4  is a side elevational view of the fixed bed blade assembly of the invention in use orientation. 
           [0014]      FIG. 5  is an end elevational view thereof. 
           [0015]      FIG. 6  is an enlarged side elevational view of a knife insert thereon. 
           [0016]      FIG. 7  is an enlarged end composite view of the movable and fixed blade orientation interface there between. 
           [0017]      FIG. 8  is an enlarged side graphic representation of the blade&#39;s progressive interface. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0018]    Referring to  FIGS. 1, 2 and 3  of the drawings, a primary blade  10  of the invention can be seen having elongated mounting bar body  11  with multiple longitudinally spaced attachment slots  12  therein. The mounting bar body  11  has an elongated offset blade attachment portion  13  extending inwardly from its perimeter edge  14  with a number of blade inserts mounting apertures BA. 
         [0019]    Knife edge teeth inserts  15  can be seen in  FIGS. 2 and 3  of the drawings having a rectangular body member  16  with correspondingly spaced aligned mounting apertures MA therein for registerable alignment with the hereinbefore disclosed bar body member apertures BA by threaded fasteners F as will be well understood by those skilled in the art and best seen, as broken away, in  FIG. 1  of the drawings. 
         [0020]    The knife edge insert assemblies  15  are each characterized by a tapered recessed mounting surface  17  for receiving a multiple apertured knife edge fixtures  18  secured thereto by secondary fasteners F through correspondingly aligned apertures. The knife edge fixtures  18  have parallel saw tooth knife edge configurations  19 , as best seen in  FIG. 2  of the drawings. 
         [0021]    It will be evident that the angular inclination of the defined saw tooth knife edge teeth is supported by the angular positioning of a tapered recess mounting surface  17  in the offset blade attachment portion  13 . The angular inclination of the teeth edges are approximately forty-five degrees at AI from the horizontal edge blade plane EP graphically illustrated in  FIG. 3  of the drawings. 
         [0022]    The knife edge inserts  15  are, as noted, secured to the body member  16  in aligned end to end relation providing a continuous multiple shearing and cutting knife edge surfaces along the mounting bar body  11 . 
         [0023]    Referring now to  FIGS. 4-6  of the drawings, a bed blade  20  can be seen for progressive engagement with the primary blade  10  as will be described in greater detail hereinafter. The bed blade  20  has a plurality of elongated mounting slots S in longitudinally spaced alignment there along. 
         [0024]    The blade bed  20  has an elongated body member  21  with an apertured offset blade edge mounting area  22  extending inwardly of its lower perimeter edge  23  when in use orientation. 
         [0025]    A plurality of adapted cutting blade inserts  24 , best seen in  FIG. 5  of the drawings, are selectively secured into the blade edge mounting area  22  in linear end to end alignment to form a continuous cutting knife blade edge there along. 
         [0026]    Each of the blade inserts  24  are formed of a rectangular flat body member  25  with spaced mounting apertures A for fasteners F registerable therethrough securing each of the blade inserts  24  to the body member  21  by corresponding aligned apertures A therein. 
         [0027]    It will be apparent that this orientation will allow for rapid replacement due to wear or damage as needed. 
         [0028]    Each of the blade inserts  24  have a plurality of registering knife edge teeth  26  milled therein forming a saw tooth cutting edge pattern SP there along which is of a same size and angular delineation so as to conform with the hereinbefore described angular disposed blade edge assembly saw tooth knife edge inserts  15  as it will be progressively engaged at multiple material contact points MCP there along seen graphically in  FIGS. 7 and 8  of the drawings. 
         [0029]    It will be seen that by intermeshing the respective angular cutting surfaces of the knife edge insert assemblies  15  during use that the so aligned cutting edges  26  of the bed blade  20  as described define a unique progressive multiple material engagement cutting action which by its multiple points of material contact effectively combine the hereinbefore traditional two-stage two blade cutting sequence required in recycling venues of shredding and grinding to a single compound cutting event of material processing, unique and novel within the art. 
         [0030]    As seen in  FIGS. 7 and 8  of the drawings the progressive interface between the bed blade  20  and primary blade  10  can be seen wherein the respective saw tooth cutting edges configurations mesh creating a multiple shearing edge cutting points there along to achieve a unique improved and efficient material processing. 
         [0031]    It will thus be seen that a new and novel compound shearing blade  10  and bed blade  20  has been illustrated and described and it will be apparent to those skilled in the art that various changes and modifications may be made thereto without departing from the spirit of the invention. Therefore I claim:

Technology Category: 7