US821584A - Pneumatic stacker and stacker attachment for threshing-machines. - Google Patents

Description

No. 821,584. PATBNTED MAY 22, 1906.

S. D. PELSING. v PNEUMATIC STAUKBR AND STAGKER ATTACHMENT FOR THRESHING MACHINES. APPLICATION FILED AUG.15, 1904.

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No. 821,584. PATENTED MAY 22, 1906. S. D. FELSING. PNEUMATIC STAUKER AND STAOKBR ATTACHMENT FOR THRESHING MACHINES. APPLIUATION FILED AUG. 15, 1904.

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S. D. PELSING. PNEUMATIC STAGKER AND STAOKBR ATTACHMENT FOR THRESHING MACHINES. APPLICATION IILED AUG.15, 1904'.

3 SHBETS- -SHEET 3.

- ticular machine to which they are applied.

name stares, PATENT omen SAMUEL D. FELSING, OF OROOKSTON. MINNESOTA, ASSIGNOR TO THE INDIANA MANUFACTURING- OOMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OF WEST VIRGINIA.

7 Specification of Letters Patent.

Patented May 22, 1906.

Application filed August 15, 1904. Serial No. 220,788.

To all whom it may concern.-

Be it known that I, SAMUEL D. FELSING, a citizen of the United States, and a resident of Crookston, in the county of Polk and State of Minnesota, have invented certain new and useful Improvements in Pneumatic Stackers and Stacker Attachments for Threshingdflachines, of which the following is declared to be a full, clear, and exact dcscription.

The improvement relates to pneumatic stackers for threshing-machines and in particular to stacker attachments.

The invention seeks to provide a construction by which the straw and chaff from the thresher-may be efficiently handled and to provide a stacker construction which may be readily attached to threshers of different makes and to those already in use.

Stacker attachment-s heretofore designed must be specially constructed to fit the par- The present improved stackers are so constructed and provided with adjustable means for attachment that they may be readily applied to threshers of different makes and sizes and to machines already in use.

The invention consists in the features of construction, arrangements, and combinations of parts hereinafter set forth, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

In the drawings, Figure 1 is a side elevation of the improved stacker in position upon the rear end of a threshing-machine. Fig. 2 is a cross-section on line 2 2 of Fig. 1. Fig. 3 is a longitudinal section through the stackerframe and parts carried thereby on line 3 3 ofFig. 2. Fig. 4 is a perspective View of part of the hood or casing for inclosing the space between the rear end of the thresher and the stacker-frame. Figs. 5 and 6 are detail sections on lines 5 and 6, respectively, of Fig. 4; and Fig. 7 is a detail perspective view of the adjustable connectors between the forward end of the stacker-frame and the thresher.

The frame of the improved stacker comprises lower longitudinal sills 10 and the upper forwardly-inclined side bars 1.1, carried 1 upon the short front posts 12 and the inclined long rear posts 13. The sides are connected by cross-bars 14 to form a rigid frame Within which the hopper and fan are mounted and which carries the deliverychute.

A single fan may be employed, but preferably a pair of fan-casings 15 are mounted in vertical position upon the cross-bars 14 at the forward end of the frame. These casings are preferably spaced from one another and from the opposite side of the stacker-frame and are provided with inlet openings or eyes 16 in each side. The fans 17 of suitable construction are mounted within the casings 15 upon a common fanshaft 18, which 1s journaled in bearings 19 in the sills 10. A pulley 20 upon the end of the shaft 19 may be conveniently bolted to pne of the thresher-shafts for driving the ans.

At the rear of the stacker-frame is n1ounted a hopper 21, which is arranged when in operation to receive the straw from the thresher. Hopper 21 is preferably rectangular insection and formed of downwardl inclined or converging walls secured at their upper edges to the side bars 11. the hopper and in front of the fans is located the horizontally-disposed open-topped airtrunk 22, which communicates at its inlet end with the delivery-nozzles 23 of the fans and at the outlet end with the deliverychute 24. The bottom 25 of the air-trunk is downwardly curved or concave and provided with upwardly-inclined inlet and outlet portions. The side walls 26 of the airtrunk are vertically disposed and abut along their upper edges against the lower edges of the inclined side walls 27 of the hopper 21, or the inclined hopper-walls 27 and the straight side walls 26 of the air-trunk may be formed in one piece. The lower edge of the rear wall 28 of the hopper is rearwardly bent to form a lip 29 and forwardly extended to form the upper wall of the outlet or discharge mouth of the air-trunk.

The discharge-nozzles 23 of the fan are so disposed that the blast is delivered in a direction tangential to the curved bottom wall 25 l of the air-trunk, and preferably the top and Beneath bottom walls of the nozzles 23 are parallel and the bottom wall tangent to the curved bottom 25. The direction of motion of the blast is gradually changed without shook by the curved bottom wall, and it is directed beneath the lip 29 at the rear lower edge of the hopper and out of the air-trunk mouth to the delivery-chute. By this arrangement the blast is confined within the air-trunk, and any tendency of the blast to deflect upwardly through the hopper is overcome. By having the side walls 26 vertical instead of inclined, as are the main side walls of the hopper, there will be no tendency for the upward escape of the blast through the hopper, which, in former constructions impaired the efiiciency of stackers of the type in which the straw is delivered into the blast from the fan. This type possesses an advantage over those in which the straw is delivered into the fan itself, inasmuch as they require less power and the straw cannot choke the fan.

The inclined side bars 11 give greater length to the stacker-frame at the rear end, so that the side walls of the hopper may have a gradual slope and will not form abrupt shoulders upon which the staw could lodge.

The fans themselves are arranged to receive the chaff from the thresher-sieves through the inlet openings or eyes 16, and preferably a hopper 30, mounted within the stacker-frame above the fan-casings, is arranged to deliver the chaff both between the casings and outside the same to all of the inlet-openings 16. The bottom of the hopper on the outside of the fan-casings is preferably open, as shown; but between the casings a curved plate 31 opposite the lower edges of the fan-inlets 16 forms a bottom for the hopper. This plate 31 is preferably provided with openings 32 at opposite ends, as shown, and air drawn through these openings prevents the chaff and short straw from collecting on the plate.

Inverted-V-shaped deflectors 33 prevent the chaff and short straw from collecting on the fan-casings 15, and to prevent this material from bridging the gap between the easings and the ends of the hopper 3O agitatingarms 34 are carried by collars 35 on the fanshaft at these points. If desired, one of these arms on each side may be arranged in inclined position, as shown.

To properly direct the air into the inner inlet 16 of the fan-casings and to prevent the suction of one fan from interfering with that of the other, a transverse vertically-disposed division-plate 36 is arranged between the fancasing to divide the air as it passed to the fans.

The plate is preferably mounted upon the fan-shaft 18 to revolve therewith and is of a size slightly smaller than the fan-openings 16. Preferably, also, the plate 36 is angular in outline, as shown, and provided with oppositely-deflected portions or wings 37, so

that it operates to prevent short straw from.

bridging across between the fan-casings and tend to project the same toward the fan-inlets 16.

The inlet end 38 of the delivery-chute 24 is shaped to fit over the outlet or mouth of the air-trunk 22, and the lower wall is curved to correspond with the concave bottom wall 25. Both of these walls are concentric with pivots 39 on opposite sides of the frame to which the supporting-arms 40 of the straw chute are connected and by which the chute is supported to swing vertically upon the stacker-frame. These bolts 39 are secured to short struts 41 extending between the up per side bars 11 and rear posts 13 of the stacker-frame.

The deliverychute is preferably provided with a section 24, flexible in lateral direction, and any suitable means may be employed to shift the chute laterally and vertically and thus distribute the straw upon the stack.

The stackenframe supporting the fans, hoppers, and delivery-chute could be carried upon wheels; but in accordance with the present invention means are provided for directly mounting the stacker attachment upon the rear end of the threshing-machine. The rear portion of the thresher is shown in the drawings. The sills 42 thereof carry the upright post 43, located at the rear of the side walls of the machine and extended across the longitudinal bars 44 of the thresher frame. The tailpiece 45 of the thresher is projected at its upper end adjacent the straw floor or rack 46. (Indicated in dotted lines.) The sieves are indicated at 47. These parts are common to the ordinary types of threshing-machines, but differ somewhat in form. Moreover, the width of the machine varies with the size thereof. Laterally-adjustable connections are employed to secure the forward end of the stacker-frame to the rear ends of the thresher-sills and are preferably in the form of butt-straps 48, of steel, ar ranged to extend beneath the adjacent ends of the sills 10 and 42 of the stacker and thresher frames. (See Figs. 1 and 7.) The butt-straps are laterally adjustable upon the sills 10 and are held in place thereon by the bolts 49, arranged to extend vertically through the sills and through any one set of a number of holes in a laterally-extended wing of the strap. Three sets of these holes are shown, and as the straps may be reversed or changed from side to side they will serve to connect the stacker-frame to threshers of five different widths. As the width usually varies by definite amounts in accordance with the length of the thresher-cylinder, the holes 50 may be correspondingly located; but other means may be employed for holding the laterally-adjustable connection in place within the scope of the invention. Bolts 51 are arranged to extend through openings in the projecting ends of the straps 48 and vertically through the rear ends of the threshersills 42.

The outer or rear end of the stacker-frame is supported by suspension-rods 52, one on each side, and preferably pivoted at their outer lower ends to the bolts 39 on the stackeri'rame. The inner upper ends of the suspension-rods are provided with adjustable connections for engagement with the frame of the threshing-machine. For this purpose bolts 53 and a series of holes 53 are provided in the suspension-rods, so that the latter may be adjustably secured to the upright and longitudinal frame- bars 43 and 44 of the thresher in accordance with the varying positions of such bars in different machines. Moreover, by means of the adjustable suspension-rods the outer or rear end of the stacker-frame may be raised or lowered to a limited extent to bring the chaff-receiving hopper 30 in proper relation with the thresher-sieves in different machines and to hold the fans a sufficient distance above the ground. To allow for this slight vertical adjustment, the con nection between the sills of the stacker and thresher frames is somewhat yielding that is to say, the horizontal butt-straps 48 are preferably bent, as shown, and though of strong steel or wrought-iron plate may be deflected more or less in vertical direction. A slight yield at this joint will permit the outer end of the stacker-frame to swing up and down some distance, and it may thus be properly located upon the thresher. Moreover, the verticaladjustment is made before the bolt connections 49 and 51 are tightened, and as this fits somewhat loosely in place the vertical adjustment is facilitated. Once in proper position, however, the bolts 49, 51, and 53 are tightened, and the stacker attachment is rigidly held in. place upon the thresherframe.

As shown, thefront post 12 and front crossbars 14 of the stacker attachment are located inside of the ends of sills 10 and side bars 11, so that such sills and side bars may be cut off if necessary to properly lit the thresherframe without weakening the stacker-framework.

A suitable hood. or casing incloses the space between the rear end of the thresher and the stacker frame, and for supporting the hood adjustable frame members are arranged to extend between the upper rear ends of the thresher and stacker frames. Such adjustable framework preferably comprises an upright end section 54 and horizontal side bars 55. Angle-brackets 56, bolted to the upper end portions of the end sections 54, carry vertical pivot-bolts 57, engaging the outer ends of the side bars 55. These side bars are thus laterally adjustable or may be swung upon threshers of different widths. Bolts'58 are arranged to secure the ends of side bars 55 to the upper ends of the rear posts 45 of the tailpieces 45, and preferably chamfered oints are formed, as shown in Fig. 5, or the side bars may be secured in proper place by other suitable means.

It is important that there should be sufficient space between the rear end of the straw floor or rack 46 of the thresher and the end of the inclosing hood to permit free movement of the straw over the end of flow down into the straw-hopper 28. The straw floor or rack in different machines projects to varying extents, and to provide this desired space the end section 54 is arranged so that it may be adjusted to and from the rear end of the thresher. This end section preferably comprises a frame formed of top and bottom bars 60 and connecting end bars 59. Bolts 61 extend through the cross-bar 14 at therear upper edge of the straw-hopper 28 and through the abutting bottom bar 59 of the end section 54. The end section 54 extends slightly inwardly toward the rear end of the thresher and at an angle to the rear end of the hopper 28, and the connecting-bolts 61 are therefore slightly bent, as shown. The holes or openings formed to receive the bolts 61 are considerably larger than the bolts, as indicated in Fig. 6, so that when the nuts 011 these bolts are loosened the section 54 and the end bars thereof may be swung to some extent upon the upper rear end of the stackerframe. A slight yielding at the joint will permit considerable movement of the upper portion of the section 54 and end bars 59,so that the end section 54 may be adjusted to and from the straw-rack to the desired extent. It will be understood, of course, that when the ad justment is once effected the bolts or nuts 61 are tightened to hold the same in adjusted position, as hereinafter described. Moreover, by lowering the outer rear end of the stackerframe by varying the bolt connections of rods 52 the lower portion of the section 54 and end bars 59 may be moved away from the rear end of the thresher. In this manner the end section and bars may be adjusted to leave sufficient space for free movement of the straw over the end of the straw-rack in machines of different makes. The side bars 55 are made of considerable length and are cut off at the proper point in accordance with the desired adjustment of the end section 54. When the adjustment is once effected, the nuts on bolts 58 and 61 are tightened and the whole held rigidly in place. i

The end and top of the hood may be formed of sheeting of iron or steel secured. to the adjustable framework formed of the side and end bars 55 and 59; but preferably the end section is constructed, as shown, of a rigid framework covered on its inner side with an iron or steel sheet 62, while a top cover 55 rests upon the side bars 55 and extends between the upperedge of the end section 54 and the deck 44 of the threshing-niachine. This top cover may be readily shaped to proper form after the end section 54 and side bars 55 are secured in place, and is preferably removable to permit access to the interior of the hood and to the end of the straw-floor. If desired, it may be hinged, as shown, to the deck 44.

The lower edge of the metal sheet 62 of the end section 54 is preferably extended (see Fig. 6) to overlap the joint between the end section and the upper rear end of the hopper 28, and thus prevent leakage of air.

The side walls of the hood are formed of flexible sheeting which will snugly inclose the space between the stacker and thresher frames even though these parts differ in width. After the stacker-frame, end section 54, and side bars 55 have been adjusted and secured in position the flexible side walls are out to proper outline and secured to the side bars 55, bars 59 of the end section 54, to the upper inclined side bars 11 of the stackerframe, and to the rear edge of the side walls of the thresher. The portion of the side walls 63 between the straw-floor 46 of the thresher and the straw-hopper 28 is preferably formed ofsheet-steel or wrought-iron, which will not be worn out by the passage of straw, but which is sufliciently flexible to closely fit in place. The lower forward portions of the side walls are preferably formed of flaps 64, of canvas or other suitable fabric, which may be detachably buttoned in position, as shown, to afford access to the threshersieves.

When in place, the improved stacker attachment forms practically an integral part of the threshing-machine; but its construction is such that it may be readily applied to threshers of different sizes and form' by unskilled workmen and can be kept in stock for the rapid filling of orders.

It is obvious'that numerous changes may be made in the details of structure without departure from the essentials of the invention.

Having described my invention, what I claim as new, and desire to secure byLetters Patent, is

1. In pneumatic stacker attachments for threshing-machines, the combination with the stacker-frame and with the fan, hopper and delivery-chute mounted thereon, of

means for connecting the stacker-frame to threshers, said connecting means being adjustable in accordance with the different widths of the threshers, substantially as described. j

' 2. In pneumatic stacker attachments for threshing-machines, the combination with the stacker-frame and with the fan, hopper.

and delivery-chute mounted thereon, of adsensed.

justable means for connecting the stackerframe to threshers of different widths and a hood having laterally-adjustable side sections for inclosing the space betweenthe stackerframe and the rear end of the thresher.

3. In pneumatic stacker attachments for threshing-machines, the combination with the stacker-frame, of laterallyadjustable connections for securing said frame to the sills of threshers of different widths, and a hood having sides of flexible sheeting for inclosing the space between the stacker-frame and the rear end of the thresher.

4. In pneumatic stacker attachments for threshing-machines, the combination with the stacker-frame and with the-hopper, fan and delivery-chute mounted thereon, of straps arranged to extend beneath the adj acent ends of the sills of the stacker-frame and thresher, laterally-adjustable bolt connections for securing said straps in place, and suspension-rods connectedto the rear end of said stacker-frame having adjustable bolt connections for engaging the thresher-frame.

5. In pneumatic stacker attachments for threshing-machines, the combination with the stacker-frame, of laterally-adjustable connections for securing said frame to threshers of different widths, a hood for inclosing the space between the thresher and said frame having laterally-adjustable side bars and side walls of flexible sheeting.

'6. In pneumatic stacker attachments for threshing-machines, the combination with the stacker-frame, of laterally-adjustable connections for securing said frame to threshers of different widths, a hood for inclosing the space between the thresher and-said hood comprising top and end sections, laterallyadjustable side bars pivoted to said end section and side walls-of flexible sheeting secured to said side bars, end section and stacker-frame.

7. In pneumatic stacker attachments for threshingmachines, the combination with the stacker-frame, of connections for securing said frameto the rear end of the thresher, a hood for inclosing the space betweenthe thresher and said frame comprising an end section mounted upon the rear end of said stacker-frame, side bars pivotally secured to the upper end of said endsection to swing laterally and arranged to be secured to the rear, upper end of the thresher,,a top section mounted on said side bars and side Walls of flexible sheeting secured to said side bars, end section and stacker-frame.

8. In pneumatic stacker attachments for threshing-machines, the combination with the stacker-frame and with the hopper, fan and delivery-chute mounted thereon, of laterally-adjustable connections for securing the-stacker to threshers of different widths, suspension-rods secured to the rear end of the stacker and having adjustable bolt connections for engaging the stacker-frame and a hood for inclosing the space between the thresher and said frame having side walls of flexible sheeting. I

p 9. In pneumatic stacker attachments for threshing machines, the combination with the stacker-frame and with the fan, hopper and delivery-chute carried thereby, of a vertically-yielding connection for securing the forward end of said frame to the rear end of said thresher, adjustable suspension-rods secured to the rear end of said-frame and adapted to be secured to the thresher-frame and side walls of flexible sheeting extending between the thresher and said frame.

10. In pneumatic stacker attachments for threshing-machines, the combination with the stacker-frame and with the fan, hopper and delivery-chute carried thereby, of vertically-yielding, laterally-adjustable connections for securing said frame to the sills of threshers of different widths, suspension-rods pivoted to the rear end of said frame and aving adjustable bolt connections for engaging the thresher-frame and a hood for inclosing the space between the thresher and said frame having side walls of flexible sheeting adapted to be secured to said stackerframe and to the thresher-frame.

11. In pneumatic stacker attachments for threshing-machines, the combination of the stacker-frame comprising lower sills and upper, forwardly-inclined side bars, a strawiopper mounted within the rear end of said frame, a fan delivering into said hopper mounted within, the forward end of said frame and arranged to receive the chafl' from the thresher-sieves, laterally-adjustable connections for securing the stacker-frame to the sills of stackers of different widths, suspension-rods for supporting the rear ends of said I frame and a hood having side walls of flexible sheeting extending between the side bars of said frame and the side walls of the thresher. 12. In pneumatic stacker attachments for threshing-machines, the combination of the stacker-frame comprising lower sills and uper, forwardly-inclined side bars, a strawopper mounted within the rear end of said frame, a fan delivering into said hopper mounted within the forward end .of said frame and arranged to receive the chaff from the thresher-sieves, means for connecting the forward end of said frame to the thresher, suspension-rods for supporting the rear end of said frame and a hood comprising an end section mounted upon the rear edge of said hopper, laterally-adjustable side bars pivoted to the upper end of said end section and arranged to engage the thresher-frame, a top cover on said side bars and side walls of flexible sheeting secured to said side bars, end section and to the upper end bars of said stacker-frame.

13. In pneumatic stacker attachments for mounted within the forward end of said frame and arranged toreceive the chaff from the thresher-sieves, 1aterally-adjustable connections for connecting the sills of said stackerframe to the sills of threshers of different widths, adjustable suspension-rods for supporting the rear end of said frame, and a hood having side walls of flexible sheeting adapted to extend between the rear ends of the side walls of said thresher and the upper, side bars of said stacker-frame.

14. In pneumatic stackers for threshingmachines, the combination with the stackerframe and with the hopper, fan and deliverychute mounted thereon, of a hood for inclosing the space between the rear end of the thresher and said stacker-frame having an end section disposed in operative position opposite the end of the straw floor or rack of the thresher, said end section being adjustable on said stacker-frame to and from the end of said straw floor or rack.

15. In pneumatic stackers for threshingmachines, the combination with the stackerframe and with the hopper, fan and deliverychute mounted thereon, of a hood for inclosing the space between the rear end of the thresher and said stacker-frame, said hood comprising an end section mounted upon the rear end of said stacker-frame and adjustable thereon to and from the rear end of the thresher and side walls of flexible sheeting extending between said end section and stacker-frame.

16. In pneumatic stackers for threshingmachines, the combination with the stackerframe and with the hopper, fan and deliverychute mounted thereon, of a hood for inclosing the space between the rear end of the thresher and said stacker-frame, said hood comprising an end section mounted to swing upon the upper rear edge of said hopper, said bars for connecting the upper edge of said end section and the thresher-frame, and side walls of flexible sheeting secured to said side bars, end section and stacker-frame.

17. I11 pneumatic stacker attachments for v threshing-machines, the combination with the stacker-frame and with the hopper, fan and delivery-chute carried thereby, of means for securing said frame to the rear end of the thresher and a hood for inclosing the space between the rear end of the thresher and. said frame comprising an end. section mounted upon the rear upper end of said frame and adjustable to and from the end of the thresher, and side walls of flexible sheeting adapted to extend between said end section and frame to the side walls of the thresher.

18. In pneumatic stacker attachments for threshing-machines, the combination with the stacker-frame, of laterally adjustable connections for securing said frame to the sills of threshers of different widths and a hood for inclosing the space between the thresher and said frame, comprising an end section mounted to swing upon the rear, upper edge of said frame, side bars for connect ing the upper edge of said section and the thresher-frame and side walls of flexible sheeting arranged to extend between said side bars, end section, stacker-frame and the rear end of the thresher.

19. In pneumatic stacker attachments for threshing-machines, the combination of a stacker-frame comprising lower sills and upper, forwardly-inclined side bars, a fan and hopper mounted, within said frame, laterallyadjustable connections for securing the forward end of said frame to the sills of stackers of different widths, adjustable suspensionrods for supporting the rear end of said frame and a hood for inclosing the space between the thresher and said frame comprising an end section mounted upon the rear, upper edge of said hopper and adjustable to and from the end of the thresher and side walls of flexible sheeting arranged to extend between said end section, said frame and the side walls of the thresher. t

20. In pneumatic stacker attachments for threshing-machines, the combination of a stacker-frame comprising lower sills and upper, forwardly-inclined side bars, a fan and hopper mounted within said frame, laterallyadjustable connections for securing the forward end of said frame to the sills of stackers of different widths, adjustable suspensionrods for supporting the rear end of said frame and a hood for inclosing the space between the thresher and said frame comprising an end section mounted to swing upon the rear, upper edge of said hopper, adjustable side bars for connecting the upper edge of said end section and the thresher-frame, a top cover on said side bars and side walls of flexible sheeting arranged to extend between said side bars, end section, stacker-frame and the side walls of the thresher.

21. In pneumatic stacker attachments for threshing-machines, the combination of a stacker-frame comprising lower sills and upper, forwardly-inclined side bars, a fan and hopper mounted within said frame, a hood for inclosing the space between the thresher and said frame comprising a swinging end section mounted to swing upon the upper, rear edge of said hopper, side walls of flexible sheeting and a sheet-metal strip overlapping the joint between said end section and hopper.

22. In pneumatic stacker attachments for threshing-machines, the combination of a stacker-frame comprising lower sills and upper, forwardly-inclined side bars, a fan and hopper mounted within said frame, a hood for inclosing the space between the thresher and said frame comprising a swinging end section mounted to swing upon the upper, rear edge of said hopper, adjustable side bars arranged to extend between the top of said end section and the thresher-frame, a top cover on said sidebars, and sidewalls of flexible sheeting connected to said side bars, end section and the upper, inclined side bars of said stacker-frame.

23. In pneumatic stackers, the combination with a frame, of vertically-disposed fans and fancasings, inlet-openings in the inner side walls of said casings, a fan-shaft extending through the same, and a separator-plate mounted on said shaft between said casings, said separator-plate having an angular edge.

24. In pneumatic stackers, the combina tion with a frame, of vertically-disposed fans and fan-casings, inlet-openings in the inner side walls of said casings, a fan-shaft extending through the same and a transverse, vertical separator-plate mounted on said shaft having oppositely-deflected portions on either side of said shaft.

25. In pneumatic stackers, the combination with a frame, of vertically-disposed fans and fan-casings, openings in opposite sides of each of said casings, a hopper leading to said openings, a fan-shaft extending through said casing and agitators mounted on said shaft between said casings beyond the outer sides thereof.

SAMUEL D. FELSING.

Witnesses:

ALVIN D. Bunnows, JOHN J. FLYNN.

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