US1240912A - Machine for hulling peas, beans, and the like. - Google Patents

Description

L. C. YOUNG.

MACHINE Eon HULLING PEAS, BEANS, AND THE LIKE.

APPLICATION FILED JUNE 6. I916 Patented Sept. 25, 1917.

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LAURENCE C. YOUNG, 0F MONTGOMERY, ALABAMA, ASSIGNOR 03'? ONE-HALF TO MERRILL n. PRATT,

OF PRA'ITVILLE, ALABAMA.

MACHINE FOR HULL ING PEAS, BEANS, AND THE LIKE.

Patented Sept. 25, 1911 Z.

Application filed June 6, 1916. Serial No. 101,971..

To all whom it may concern: 1 7 Be it known that I, LAURENCE C. YOUNG, a citizen of the United States, residing at Montgomery, in the county of Montgomery and dtatc of rilabama, have invented certain new and useful Improvements in Machines for Hulling Peas, Beans, and the like; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

The object of this invention is the provision of an improved machine for hulling peas, beans and the like, in which the IlllX- ture of hulls and peas, for example, is delivered to a separating chamber and there subjected to the action of a blast directed vertically against the mixture to separate the hulls from the peas.

Other obj ectsof the invention will appear from the ensuing detailed description, when taken in connection with the accompanying drawings which illustrate a structural embodiment of the invention in a preferred form. The novel features of the invention will be particularly pointed out and specitied in the claims at the end of the specification.

In the drawings Figure 1 is a side sectionalelevation of a machine constructed in accordance with the present improvements. 1

Fig. 2 is a section taken through the hulling mechanism on the line 22 of Fig. 1.

Fig. 3 is a section taken on the line of Fig. 1 looking downwardly on the separating chamber.

Like characters of reference in the several figures indicate the same parts.

The machine illustrated in the accompanying drawings is designed more particularly for hulling and separating peas, or beans, although it will be understood that it may be applied with equal facility to other analogous uses, and no limitation to the scope ofthe invention in this respect will be implicated. As shown, the upper end of the frame 1, is provided with a delivery hopper 2 into which the unhulled pods are de posited. Communicating with the lower end of the delivery hopper 2 18 a passage 3, through which the unhulled pods are directed to the hulling mechanism. In the present embodiment, the delivery of the pods to the hulling mechanism is preferably accomplished by means of suction, whereby the dust and dirt may be carried off so that the pods are delivered in clean condition to the hulling mechanism. For this purpose, an air passage 4 is positioned just to the rear of the discharge opening 5 of the delivery passage, the air passage t comn'mnicating by means of an inclined passage 6, with the suction end of a blower 7. At the open end of the passage 4 behind the discharge opening for the pods is a screen 8 which prevents the pods from being carried through the passage 4: and permits only the dust and dirt to be carried off. The force of the air passing through passages 4: and 6 may, if desired, be reduced by a retarding plate 9 positioned in passage 4; behind screen 8. This retarding plate evens up the blast passing through the screen and prevents leaves and trash from being held against the same by the blast.

The pods pass through the discharge opening 5 to the hulling mechanism located directly below. In the present instance, the hulling mechanism consists of a revolving beater roll 10 having peripheral teeth 11 which pass through the spaces between stationary teeth 12, as shown more particularly in Fig. 2 of the drawing. teeth are mounted on a curved supporting plate 13, which extends around the lower half of the periphery of the beater roll and upwardly in the rear toward the inner end of the discharge opening 5, as shown in Fig. 1. The shaft 14 of the roll is driven in the direction indicated by the arrow, in Fig. l, and during rotation of the roll the pods are carried around between the rotat ing and stationary teeth, thereby crushing the pods and liberating the peas.

In front of the roll is a downwardly inclined delivery chute 15 on which the mixture of hulls and peas is deposited by the roll and which delivers the mixture to the separating chamber, wherein the mixture is subjected to the action of a blast directed vertically against it. The employment of a vertical blast for separating the hulls from the peas is an important improvement because the blast is applied directly beneath the hulls deposited in the separating chamber, carrying them upwardly, while the peas, because of their greater weight and smaller size, fall through the chamber.

The stationary This is effected without blowing away'any of the peas along with the hulls. Other machines, wherein the blast is directed at an angle against the mixture, are disadvantageous because, if the blast is strong enough to carry away the hulls, considerable numbers of the peas are blown away with the hulls; it the force of the blast is reduced so as not to blow away the peas, some of the hulls are permitted to fall with the peas and the machine chokes. With the vertical blast, however, the full power of the blast is applied directly underneath the mixture of hulls and peas deposited in the mouth of the separating chamber, and the result is that all the hulls are properly carried off without wasting any of the peas. Any unhulled pods, because of their heavier weight, will pass along with the peas, and may be separated from the peas later on and again passed through the hulling mechanism.

The separating chamber 16 is provided with vertical side walls 17, as shown in Fig. 1, and the delivery chute 15 extendsdirectly to the mouth of the separating chamher. At the delivery end of the chute, and extending over the mouth of the separating chamber is a row of fingers 18, these being spaced apart sufliciently to catch the hulls while permitting the peas to fall into the separating chamber. These fingers by retarding the movement of the hulls in their passage into the separating chamber greatly assist the blast in the chamber in separating the hulls from the peas. The discharge outlet 19 for the hulls is located adjacent the mouth of the separating chamber, and positioned over the discharge outlet is a curved deflecting plate 20 which extends inwardly quite close down to the delivery chute 15 to prevent the separated hulls from again mingling with the mixture on the delivery chute, and also to prevent loss of air.

If desired, the outlet 19 maybe connected with a suitable exhaust flue, not shown, for carrying the hulls away from the machine and out 01": the building. The upper end of the outer wall of the separating chamber is provided with a curved lip 21, which prevents any of the separated hulls from hanging on the end of the wall and insures a clean separation.

Because of their greater weight, the peas, and the unhulled pods fall through the The vertical blast in the separating chamher is supplied through a passage 25 which connects the lower end of the separating chamber with the discharge end of the blower 7. Side valves 26 controlled by operating rods 27 permit a regulation of the quantity of air, drawn in by the blower. As shown, the lower wall of the passage 25 extends over the outletQl, preventing the blast from reaching the peas passing into the outlet, as well as insuring the blast entering the separating chamber with full force. Y

What is claimed is:

1. In a machine such as described, the combination with an air blast separator and a fan inclosed by a casing and adapted to create a blast of air for said separator, a hulling mechanism, ahopper and delivery passage for delivering pods to said hulling mechanism, a substantially vertical suction conduit having one end covered with mesh netting and adjacent said delivery passage and the other end connected to theexhaust end of said fan casing for creating suction in the delivery passage whereby pods are drawnalong said delivery passage'to said hulling mechanism, and means for delivering the mixture of peas and hulls to the air blast separator.

2. In a machine such as described, the combination with an air blast separator and a fan inclosed by a casing and adapted to create a blast of air for said separator, a hulling mechanism, a hopper and delivery passage for delivering pods to said hulling mechanism, a substantially vertical suction conduit having one end adjacent said delivery passage, mesh netting covering said end of the suction conduit, a retarding plate positioned in said suction conduit adjacent said netting, and the other end of said conduit being connected to the exhaust end of said fan casing for creating suction in. the delivery passagewhereby pods are drawn along said passage to the hulling mechanism, and means for delivering the mixture ofpeas and hulls to the air blast separator.

LAURENCE o. YOUNG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

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