US2262620A - Bag filling holder - Google Patents

Description

Nov. 11, 1941. J. J. NEUMAN l BAG FILLING HOLDER Filed Appil`22, '1940 I2 Sheets-Sheet l Nov. 11, 1941. J. .1. NEUMAN BAG FILLING HOLDER g sheets-sheet 2 Filed April 22, 1940 :HI Ill '1b. n|l| l i J mi" Gttorneg Patented Nov. 11, 1941 BAG FILLING HOLDER Jacob J. Neuman,

South Salem, N. Y., assignor to United States Patent Development and Royalty Company, South Salem, N.

New York Y., a company of Application pril 22, 1940, Serial No.`331,048

4 Claims.

The present invention relates to improvements in Bag filling holders and aims to provide certain improvements over my prior Patents Nos. 2,156,224 granted April 25, 1939; 2,159,858 granted May 23, 1939; and the Richardson Patent No. 2,178,494 granted October 31, 1939.

More particularly the invention relates to certain improvements in pneumatic tube filling holders, more especially to such a holder for use in filling paper or cloth bags with granulated or powdered commodities, such as sugar, grain, salts, cement or like materials.

It is a primary object of this invention to provide a holder which is semi-automatic in operation and on which the empty bag or sack may be placed with a minimum loss of time and effort.

Another important object is to provide such a holder embodying means for firmly gripping the bag at the upper edge thereof and shaking it while in a suspended condition during filling to compact the commodity with which the bag is being filled. y

A further object is to provide such is adaptable without alteration to filling both cloth and paper bags and which will provide a dust-tight seal between the entire circumference of the bag and the holder to prevent less of material when filling bags with dusty or powdered commodities.

A still further object is to provide such a holider which is adaptable to filling bags such as disclosed in my copending application Serial No. 245,546 where the gussets are folded against the side walls of the bag and remain in such a folded condition during the entire lling operation for the purpose of facilitating the subsequent sewing or other closure operation.

It is a further object of the present invention to provide a holder constructed and arranged to grip the bag with such force as to permit suspended shaking without detachment of the bag and at the same time avoiding any increase in pressure upon the mouth of the bag such as would be apt to rupture the same, and wherein the strain on the mouth of the bag is actually relieved.

A still further object of the invention is to provide an improved holder or clamping arrangement to receive the bag in which gussets have been preformed and received upon the clamping L.

device in the folded condition, thus facilitating later sewing inasmuch as the gussets do not have to be reformed.

A still further object of the invention is to provide for a vacuum means for exhausting the a holder that air from the pneumatic tube which binds the bag in the clamping device, such vacuum arrangement being adapted to save time over an arrangement which depends solely on the tension of the rubber tube to exhaust the air from the pneumatic expansion device.

A still further object of the invention is to provide a novel form of actuating means whereby pressure or vacuum may be put in communication with the pneumatic expansion tube to facili-.- tate easy and quick placement of the bag in lthe holder and its removal therefrom.

With the above `and other objects in view as will become apparent from the subjoined specification and claims, I have illustrated my invention in the attached drawings Where- Figure 1 is a plan View of the improved bag holder with a bag in position for filling as viewed on the line I-I of Figure 2.

Figure 2 is a vertical section on the line 2--2 of Figure l with parts broken awayand parts shown in section.

Figure 3 is an enlarged vertical section on the centerline of the valve which controls the admission and exhaust of pressure fluid.

Figure 4 is a fragmentary vertical section taken through the improved bag holder and showing the collapsed position of the pneumatic tube and the release of the bag.

Figure 5 is .a vertical section taken on the line 5-5 in Figure 4.

Figure 6 is a horizontal section taken on the line 6-6 in Figure 2 showing the expanded condition of the pneumatic tube.

Figure 7 is a similar View showing the contracted position of such tube, and

Figure 8 is a diagram showing the output and intake of the same compressor utilized for the creation of pressure and suction in the bag hold- Referring to the drawings, a hopper IIJ is provided from which material is adapted to be fed through the flexible sleeve connection I I and the holder i2 to the bag B, The lower extremity 40 of the holder I2 is formed with an indentation extending around its entire circumference and into which the pneumatic tube I3 is adapted to be secured by any suitable means such as vulcanizing. At each side of the -holder I2 and suitably secured thereto are the clamp shaped member-s I4 extending down and around the pneumatic tube I3. While shown as two separate clamps, if so desired, a single clamping ring of similar section may extend completely around the holder I2. The inner faces of said clamps are rod I9 has the collar 2l! fixed on the lower extremity thereof and thereby supports the frame I5 and the holder I2. The upper end of the rod I9 is attached to a shaking device (not shown) which may be a motor driven eccentric similar to that shown in my Patent No. 1,823,283 or any other suitable means for imparting a reciprocating motion to said rod I9 for the purpose of shaking down the contents of the bag B during lling. The opposite extremities of the members I5 are also joined in fixed spaced apart relation by the transverse member 2| which is formed with the journal portion 2IA adapted to receive the shaft 22. The outer ends of the shaft 22 extend beyond the journal portion 2IA and have pinned thereto the rod connectors 23 into which are tapped the Isupporting rods 24 and 25. The rods 24 and 25 are rigidly secured at their upper extremities to any suitable supporting structure (not shown).

'I he tube I 3 is connected by means of the pipe .26 iand the flexible hose connection 26A to the valve 21 which is supported on one, of the rods 24. 'I'he valve 21 consists of a hollow body portion 21A with three holes or passages 4I, 42 and 43 adapted to receive hose or pipe connections and communicating in 90 spaced apart relation with a hollow inner portion Fitting in the hollow inner portion of the body 21A is the rotatable cylinder 21B having a passage 44 formed therein which is adapted when rotated to the proper position to connect the hose 26A with either the pipe connection 28 or 29. The cyl- .inder 21B is pinned to a shaft 30 and through suitable lever rods and shafts is adapted to be rotated through 93 by means of a double foot pedal 3| having the foot engaging plates SIA and 3IB.

In operation the mouth of a bag B is placed over the tube I3 of the holder I2 and inside of the clamp members I4 and the foot plate3IA is depressed thus operating the valve 21 to connect the tube I3 with a suitable source of pressure fluid such as compressed air through the pipes 26 and 28. The tube I3 is thus inflated and presses the upper edges of the .bag against' the corrugations of the clamp members I4. The portions of the tube I3 between the clamp members I4, which are not restrained thereby, expand further until the slack in the mouth of the bag is taken up and the mouth is then fully expanded and a perfect seal is established between the mouth of the bag and the tube I3. No

dust or material is thus permitted to escape. While the material is fed into the bag the entire frame I5 is rapidly moved up and down by the rod |19 about the pivot 22 thus thoroughly shaking down the material in the bag and compacting the same.

When the bag is filled, the operator depresses the foot plate 3IB, thus operating the valve 21 to cut off the supply of compressed air and con- 1 necting the pipe 26 to the pipe 29. The pipe 29 is connected with a suction means and the air is thus rapidly exhausted from the tube I 3, which is completely collapsed against the sides of the plies the pressure to the pipe 28 thus obviating the necessity of a vacuum pump.

It will be noted that since the tube I3 is completely deflated that its outer circumference is thereby greatly reducedr thus permitting the empty bag to be quickly and easily placed and adjusted thereon. If the tube I3 were merely exhausted to atmosphere it would not only take longer to deate but would still have a fairly large outer circumference thus making it much more dilcult to place the empty bag thereon.

By use of the restraining clamps I4 the bag is not only held much more securely but it will be noted, as shown in Figures 1, 6 and '1, that the gussets G may be clamped in a folded condition thus preventing undue expansion of the mouth of the bag B by the filling material. Since the gussets G are thus maintained in a folded condition they do not have to be reformed prior to sewing and the time usually wasted in performing this operation is entirely eliminated.

It will be obvious that due to the construction and relative arrangement of the hopper I0., the flexible sleeve II, the holder I2 and the tube I3 that the entire passage for material from said hopper into the bag is not only completely sealed against escape of dust or material, but that this is accomplished without the use of sliding or reciprocating parts which invariably become clogged and jammed with material. It is not believed that this is so thoroughly accomplished by any other existing shaking type bag filling holder.

It Will be appreciated that the clamps I4 are rigid and therefore permit the pneumatic tube I3 to expand the bag into a very firm gripping and holding arrangement in which suspended shaking of the bag will be permitted without incurring the likelihood of the bag sliding off the support. In other words the corrugated clamps I4 afford a solid abutment against which to clamp the bag and incidentally to relieve the strain on the mouth of the bag. Also the pneumatic tube I3 expands the bag into the fixed corrugations, thus providing added protection against slipping off. The clamps I4 are constructed to cover more or less of the circumference of the tube, depending on the size and type of bag for which the holder is designed; it being desirable to leave some open space to facilitate quick placing of the empty bags on the holder.

Another advantage of the clamp I4 is that the gussets G may be clamped in a folded condition, thus facilitating later sewing as the gussets do not have to be reformed. In the Richardson patent the lateral tension induced at the mouth of the bag by the tube unfolds the gussets. The advantages of clamping the gussets in folded condition are described in my application Serial No. 245,546.

The suction or vacuum means for exhausting the air from the pneumatic tube saves time over the Richardson arrangement where the exhaust of the air depends solely on the tension of the rubber tube which takes a much longer time. Also, by using vacuum, the pneumatic tube I3 is more completely collapsed, thus facilitating easy and quick placement of the empty bag on the holder.

In Figure 8 is shown a single compressor 5I having an intake 52 and output 53 connected respectively With the suction and pressure lines 29 and 28. This arrangement enables one compresser to furnish pressure for inflating the exible bag-holding tube, While the intake of the same compressor provides suction for deflating the tube I3.

It is obvious that various changes and modifications may be made in the details of construction and design of the labove specifically described embodiment of this invention Without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

What is claimed is:

1. In a bag filling machine including a shaking table and a filling tube carried by said table, means for holding a bag With its open mouth in place on the discharge end of said filling tube, comprising a pneumatic exible tube carried by said lling tube and adapted to enter the mouth of the bag, rigid clamp members xed to said lling tube and having parts extending radially out- Ward of said pneumatic tube and adapted to surround at least a portion of the outer periphery of the mouth of the bag, said pneumatic tube being inflatable to expand the bag against said clamp members, and being deflatable to release the bag, a conduit carried by said table and in fluid communication with said pneumatic tube, pressure and suction connections to said conduit,

a valve for selectively controlling the communi- 5 cation of said suction and pressure connections to said conduit to control the ination and deflation of said pneumatic tube, and an actuator for said valve.

2. In a bag lling machine including a filling tube, means for holding a bag With its open mouth in place onthe discharge end of the filling tube, comprising annular means on the discharge end of said lling tube adapted to enter the mouth of the bag, said annular means being expansible and contractable radially stationary means adjacent the discharge end of said filling tube spaced radially outwardly from said annular means, means for expanding said annular means to clamp said bag against said stationary means, and means for quickly contracting said annular means to thereby permit quick and easy placement of an empty bag thereon. A

3. In a bag lling machine including a lling tube, means for holding a bag with its open mouth in place on the discharge end of the lling tube, comprising an annular pneumatic tube on the discharge end of said lling tube adapted to enter the mouth of the bag, stationary means adjacent the discharge end of said filling tube and spaced radially outwardly from said pneumatic tube, means for inflating said pneumatic tube to expand the bag against said stationary means and clamp the same in place, and means for quickly and completely deflating said pneumatic tube to thereby permit quick and easy placement of an empty bag thereon.

4. In a bag lling machine including a filling tube, means for holding a bag with its open mouth in place on the discharge end of the filling tube, comprising an annular pneumatic tube on the discharge end of said lling tube adapted to enter the mouth of the bag, stationary concentric segments spaced radially outwardly from the discharge end of said lling tube and adapted to surround at least a portion of the outer periphery of the mouth of the bag, the inner surfaces of said segments being grooved circumferentially, and means for selectively inflating and deating said pneumatic tube, said pneumatic tube cooperating with said segments during inilation to force the mouth of the bag against the grooved inner surfaces of said segments to thereby clamp the bag in place.

JACOB J. NEUMAN.

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