US1608041A - Sack filler - Google Patents

Description

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SACK FILTER Filed Maw 27 1925 2 Sheets-Sheet 1 1,608,041 A. J. SMITH Nov. 23 1926.

SACK FILLER 7 Filed May 27, 1925 2 Sheets-Sheet 2 ARTHUR 3'. SMITH, F. WASGO, OREGON.

SACK FILLER.

Application filed May 27,

This invention is a machine for use in filling sacks and is intended more particularly for use in connection with the bagging of grain, the object of the invention being to provide means whereby the commodity poured into the sack will be caused to quickly settle to the bottom thereof so that the sack may be more completely filled than has heretofore been possible. The invention is illustrated in the accompanying drawings and consists in certain novel features which will be hereinafter first fully described and then more particularly pointed out in the appended claims.

In the drawings:

Figure 1 is a plan view, partly broken away, of my improved machine Fig.2 is a side elevation of the same;

. Fig. 3 is a transverse vertical section on the line 3-3 of Fig. 1;

Fig. l is a detail section on the line 4-4 of Fig. 1, and 1 Fig. 5 is an enlarged detail section on the line 5-5 of Fig. 1.

I In carrying out the present invention, I employ a base frame consisting of side rails 1 which may be bolted to thefloor of a warehouse or anchored upon any other foundation. These side rails are disposed in parallel relation and on their inner faces at their upperends are provided with longitudinal flanges 2, as shown most clearly in Fig. 3. Secured in and rising'from the saidflanges 2 in rectangular relation are a plurality of posts or guide pins 3 which are adapted to pass through openings 4, provided therefor in a platform 5, and are equipped with fixed collars or abutments 6 between which and the respective flanges 2 are disposed expansion springs 7. These springs '7 serve as bufifers to absorb the shocks upon the platform in the operation of the device as will hereinafter appear, and also yieldably support the pins in their er:- treme upper positions, it being understood that the openings i in the platform are greater in diameter than the pins or posts so that the platform may play freely vertically upon the pins or posts. The platform may be of any material possessing the requisite strength and durability and will ordinarily be a stout board of rectangular form having the openings 1 near its corners, as will be readily understood upon reference to Fig. 1. On the under side of the platform are secured wear plates 8 of metal against which 1925. Serial No. 33,237.

cams 9 are adapted to ride so as to impart vertical movement to the platform. .These cams are carried by transverse shafts 10 which are mounted in bearings 11 provided therefor upon the respective rails 1 and one of said shafts 10 is disposed adjacent one end of the supporting frame while the other shaft is disposed at a point intermediate the ends thereof, Upon one end of each shaft is a sprocket wheel 12' around which is trained a sprocket chain 13 whereby the shafts will be caused to rotate in unison and in opposite directions, as will be understood upon reference to Fig. 2, it being also noted that'the cams 9 are so arranged that they will allhave the same relation to the platformat all times, although they rotate in opposite directions. "A tightener is also provided to maintain the chain 13 in taut relation to the sprockets 12 and to compensate for wear upon the parts, this tightener including a sprocket 13 about which the chain is trained, as shown most clearly in Fig. 2. The tightener sprocket is located at the opposite end of the frame from the end sprocket 12 and is carried by a shaft 1 1 whichis journaled in a bearing 15 slidably fitted in an opening 16 extendinglongitudinally' of the frame member 1.' At theadjacent end of the said frame member is an outwardly projecting lug 17 and an adjusting screw or bolt 18 is fitted through said 'lug and has threaded engagement with the bearing 15 so as to adjust the bearing along the opening 16 in an obvious manner,it being understood that this slidable bearing is-du plicated at the two sides of the frame and:

the shaft 14 extends across the frame so that it may be maintained at all times ata right angle to the frame and uneven wear upon the chain or, the sprockets will be avoided.-

The hub of the inner sprocket 12 is pro: vided with a clutch face 19 and is fixed upon the shaft 10. Loose upon the said shaft at the outer side of the sprocket is a band pulley 20 having a clutch hub 21 adapted to mate with the clutch face 19 and held y'ieldably in engagement therewith by a spring 22 coiled around the outer end of the shaft between an abutment 23 thereon and the outer end of the pulley hub. The outer end portion of the pulley hub is constructed with an annular groove 24 in which is en gaged a yoke 25 on the end of a shifting bar 26 which is loosely mounted at its opposite end upon the end shaft 10, as shown side member 1 of the frame and in the outer end of this arm or bracket is rotatably mounted a vertically extending rock shaft 28 having a crank handle 29 at its upper end and provided at its lower end with a crank 30 bearing against the inner side of the shifting bar 26. it will be readily understood that the operator by manipulating the crank handle 29 may rock the rod or shaft 28 and cause the crank 30 at the lower end of the same to bear against the bar 26 and rock the same outwardly thereby disengaging the clutch members 21 and 19. If the rock shaft be turned to such an extent that the crank 30 will extend at a right angle to the shift bar 26, the bar will be held in its outer position against the tension of the spring 22 and will remain in this position while a filled bag is being removed from the platform 5 and an empty bag being placed in position thereon. V fhen the bag to be filled has been properly arranged upon the platform, the rock shaft is returned to the position shown in Fig. 1, thereby permitting the clutch members to re-engage and transmit motion to the two cam shafts. The cams will then be, of course, caused to rotate and as they assume the positions shown in Fig. 1 and in full lines in Fig. 4, they will raise the platform. As the high part of the cam clears the wear plates upon the platform and the straight faces of the cams are presented to the platform, the platform will drop quickly and will thereby exert a jogging action upon the bags so that the material being placed in the bags will be caused to rapidly settle to the bottoms thereof and fill all the corners of the bottom. When the platform descends, it will, of course, impinge upon the abutments or collars 6 upon the guide pins or posts 3 and the shock of such impact will be absorbed by the springs 7. The platform may have a projection 30 formed or secured thereon to prevent the sacks from sliding.

My device is exceedingly simple in the construction and arrangement of its parts and will operate in a highly efficient manner to facilitate the filling of bags to their utmost capacity.

Having thus described the invention, I claim:

1. In an apparatus for the purpose set forth, the combination of a supporting structure, a platform mounted above the supporting structure for vertical movement, shafts journaled in the supporting structure and extending beneath the platform in transverse spaced relation to each other, cams on said shafts having their cam surfaces facing in opposite directions and arranged to ride against the under face of the platform and lift the platform when the shafts are rotated, means to impart simultaneous rotation to said shafts in opposite directions to cause the cams to have movement in opposite directions along the platform'while lifting the same, and means carried by one of the shafts for driving the same.

2. In a machine of the character described, a. supporting structure, a platform disposed above said supporting structure and slida-bly mounted for vertical reciprocating movement, a shaft journaled in said supporting structure and extending beneath said platform, a second shaft journaled in said supporting structure and extending beneath said platform at one side of the first shaft, sprocket wheels rigidly secured upon said shafts, an idler sprocket rotatably mounted at the opposite side of the first shaft from the second shaft, a sprocket chain trained about said idler sprocket wheel and the sprocket wheel carried by the second shaft and having one fii ht engaged with the sprocket wheel of the first shaft whereby rotary motion may be transmit-ted from one shaft to the other with the shafts rotating in opposite directions, and cams carried by said shafts beneath the platform and having their cam surfaces facing in opposite directions and adapted to engage the under face of the platform and move along the same in opposite directions while imparting upward movement to said platform as the shafts r0- tate.

In testimony whereof I affix my signature.

ARTHUR J. SMITH. [L.S.]

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