The field of the invention is the same as that found in my prior United States Patent 4,303,206, which is solid material comminution or disintegration and particularly processes and machines having classification or separation of material and apparatus utilizing an arcuate screen concentri with a rotary comminuting member.

The present machine is a variation from the one disclosed in my prior United States Patent 4,303,206 and provides a different way of supporting the end of the auger near the product inlet and does away with the removable actuator threaded on top of the body and the locking lever assembly and other parts and arrangement therein. While the previous arrangement performed satisfactorily, sometimes there is a tendency for the seal on the end of the auger to leak due to the force of the liquid, and there is also some expense and inconvenience in the mounting and supporting of the end of the auger. The auger of the present machine is provided with a circular flanged portion within the housing and adjacent to the ι ^* ubber- coated seal functioning to interrupt the flow of liquids toward the seal and in addition, the flange is provided on the inner surface with a plurality of slots which serve to interrupt and direct the fluid thereby improving the seal and reducing the loss of fluid and pressure. The end of the auger is supported in a bearing arrangement which is bolted by means of an end cap to the auger housing to fasten the auger housing to the spaced columns which are mounted on the base plate.

The auger itself is provided with an additional flight near the bone exit comprising an additional helical member the same as the other helical member on the auger but positioned in between two previously existing helical members in order to provide a better flow of material. The ends of the two helical auger members are square.

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-— ^{" "" "} SUMMARY OF THE INVENTION

The invention provides in a deboning machine for separating mixed particles of bone and meat products, such as obtained by grinding fish or chicken bones having meat thereon, comprising a machine frame, a motor mounted on said frame, a product auger having a first end and an opposed second end, said first end being driven by said motor, said auger being tapered on the outside and comprising auger blades arranged in a continuous helix for removing meat products, support means on the base for supporting said auger for rotation by said motor, bearing means for said auger, an auger housing mounted on said base and having said auger mounted therein and there being a product space between the inside of said housing and the exterior of said auger near the second end thereof, a bone outlet, a sleeve having- holes therein mounted over said auger, a meat outlet, a product inlet mounted on said machines adjacent said second end of said auger and being in communication with said auger, and a seal adjacent the second end of said auger, the improvement comprising: means adjacent the second end of said auger for directing the product mixture including fluids away from the second end of said auger and the seal and towards the first end of said auger and the product outlet.

From another aspect, the invention provides in a method of separating mixed particles of bone and meat products, such as obtained by grinding fish or chicken bones having meat thereon, utilizing apparatus comprising a machine frame, a motor mounted on said frame, a product auger having a first end and an opposed second end, said first end being driven by said motor, said auger being tapered on the outside and comprising auger blades arranged in a continuous helix for removing meat products, support means on the base for supporting said auger for rotation by said motor, bearing means for said auger, an auger housing mounted on said base and having said

SUBSTITUTE SHEET

O 84/01267

- 3 -

auger mounted therein and there being a product space between the inside of said housing and the exterior of said auger near the second end thereof, a bone outlet, a sleeve having holes therein mounted over said auger, a meat outlet, a product inlet mounted on said machines adjacent said second end of said auger and being in communication with said auger, and a seal adjacent the second end of said auger, the improvement comprising: directing the product mixture including fluids away from the second end of said auger and the seal and toward the first end of said auger and the product outlet by means for directing on said auger.

The invention also provides in a machine for separating mixed particles of bone and meat products, such as obtained by grinding fish or chicken bones having meat thereon, utilizing apparatus comprising a machine frame, a motor mounted on said frame, a product auger having a first end and an opposed second end, said first end being driven by said motor, said auger being tapered on the outside and comprising an auger blade arranged in a continuous helix for removing meat products, support means on the base for supporting said auger for rotation by said motor, an auger housing mounted on said base and having said auger mounted therein, a bone outlet, a sleeve having holes therein mounted over said auger, a meat outlet and a product inlet mounted on said machines adjacent said second end of said auger and being in communication with said auger, the improvement comprising: said first end of said auger having a tip on said auger blade and said tip being quadrilateral, such as square or rectangular.

The invention further provides in a machine for separating mixed particles of bone and meat products, such as obtained by grinding fish or chicken bones having meat thereon, utilizing apparatus comprising a machine frame, a motor mounted on said frame, a product auger having a first end and

an opposed second end, said first end being driven by said motor, said auger being tapered on the outside and comprising an auger blade arranged in a continuous helix for removing meat products, support means on the base for supporting said auger for rotation by said motor, an auger housing mounted on said base and having said auger mounted therein, a bone outlet, a sleeve having holes therein mounted over said auger, a meat outlet and a product inlet mounted on said machines adjacent said second end of said auger and being in communication with said auger, the improvement comprising: said auger housing having support member extending outwardly therefrom adjacent the second end of said auger; bearing means supported on said support member about the tipper second end of said auger, a closure cap covering said bearing means and the second end of said auger, and means for se'curing said cap to said support member.

Figure 1 is an elevation view of the machine with the auger and related structure shown substantially in medial, vertical cross-section.

Figure 2 is a plan view of the slotted plate on the entrance end of the auger next to the seal.

Figure 3 is a top plan view of the end cap on the tipper end of the machine in Figure 1.

Figure 4 is a plan view of the housing supporting the upper end of the machine in Figure 1.

Figure 4 is a plan view of the housing supporting the upper end of the auger, with the end cap, bearings and auger removed.

Figure 5 is a side elevation view of the lower or bottom end of the auger near the discharge end showing the added flight.

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Figure 6 is a partial elevation view in full lines of the upper part of the auger.

Referring initially to Figure 1, the general arrangement of the machine which does not per se form a part of the claimed invention is similar to the machine shown in my United States Patent 4,303,206 and the machine ^* 10 is mounted on a floor support base (not shown by means of adjustment screws 12 attached to a base plate 14 which supports a large electrical motor (not shown) having a motor drive coupling 16. The drive coupling 16 is attached to a cylindrical adapter 18 having a threaded collar 20 on which is threadedly mounted an auger 22 having auger blades 23 defined by a helix which provides a flight (or flite) each 360° of the helix on the auger 22. A bearing assembly and arrangement 24 is provided at the bottom of the auger 22 on base plate 14 to support the auger for rotation thereon in the manner similar to that described in my previous United States Patent 4,303,206. There is a compression ring arrangement 26 provided with a tapered bore to be adjusted in engagement with the interior of a stainless steel housing 30 and screen arrangement 31 which is mounted on a mounting collar 32 having flanges 34 which are bolted to supports 36 having collars 38 which are attached about vertical columns 40 that are mounted on and attached to base plate 14. There is a bone exit 42 and a meat exit 44 leading from the perforated screen.

As an improvement in the previous arrangement, the auger is provided with an additional blade 46 (see Figures 1 and 5) which is an additional flite (or flight) extending 180° between two previous flites and blades 48, SO of the previous auger arrangement. The added flight 46 in one specific example is spaced from the blades 48, 50 approximately one inch.

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The tip 49 of blade 48 is square. Tips of blade 46 are also square to assist removal.

In my previous machine in United States Patent 4,303,206, the auger had its upper end rotating in a collar on a bearing assembly and held in place by a cap on another collar. The space next to one collar is sealed by gasket. Due to the constant amount of pressure from fluids sometimes the gasket would leak. In the present arrangement the auger 22 is provided with a fluid director in the form of circular flanged portion 51 supported for rotation with the auger 22 inside the product inlet sleeve -52 having product inlet 53. Product inlet sleeve 52 is provided with a fixed flange in the form of a circular collar 54 defining a space 56 (Figure 1) with the upper circular end 58 of auger 22 and a circular rubber coated seal 60 is provided in this space. The flanged portion 51 is provided with four slots or grooves 62 which are milled at an angle of 45 degrees from the starting point of the auger flighting 23 a distance into the face 64 of the flanged portion 51 in the manner shown in Figure 2. The first slot 62 is 45° approximately from the starting point of the auger 22. Of course the slots 62 stop before reaching the seal area. The liquids which are thrown under pressure upwardly from the rotation of the auger 22 are directed against the face 64 of the flanged portion 51 and into the respective slots 62 which have the effect of interrupting and breaking up the flow of the fluid under pressure thereby reducing the concentrated pressure and flow "against the rubber coated seal 60 which reduces the tendency to leak at this particular place. This makes it easier to keep the machine clean and also makes the seal 60 last longer. The flanged portion is located adjacent the product inlet 53 to assist in keeping . the flow of the product in a downwardly direction in Figure 1 rather than in an upwardly direction toward the rubber coated seal 60.

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The upper end 68 of auger 22 is mounted for rotation inside of a flanged auger support 70 having a flanged portion 72 attached to the auger by means of a pin 74 and being mounted inside a thrust bearing assembly 76 having thrust bearings 78 supporting a roller bearing assembly 80 which is held in place by an end cap 82 having circular flanged portion 84 bolted in place by bolts 85 to the flanges of the product inlet sleeve 52 and also to supports 36 mounted on the vertical columns 40 by means of bolts 86.

While I have shown and described a particular preferred embodiment of this invention in detail and including a suggested mode of operation, this is by way of illustration only because there are various alterations, changes deviations, eliminations, revisions and departures which may be made in the invention without avoiding the scope of the invention set forth in the appended claims.

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OM