US2488394A - Filling machine having reticulated drums for filling fabric containers with fibrous material - Google Patents

Description

Nov. 15; 1949 M. GOLDBERG FILLING MACHINE HAVING RETICULIATED DRUMS FOR FILLING Filed Aug. 9, 1945 FABRIC CONTAINERS WITH FIBROUS MATERIAL 3 Sheets-Sheet 1 MAX GOLD BE RG INVENTOR BYWMM ATTORNEY NOV. 15, 1949 M, GOLDBERG 2,488,394

FILLING MACHINE HAVING RETICULATED DRUMS FOR FILLING FABRIC CONTAINERS WITH FIBROUS MATERIAL Filed Aug. 9, 1945 3 Sheets-Sheet 2 l N I I IOOOOOOOOOOOOOOOM 10060000 0000000000 ,1 l mono-000000000000 oooooooooooomooea I oooooooooooooooaa l oooooooooooooooow oo00o00oo0o000000 ODQOOOOOOOQOOOMN MAX GOLDBERG INVENTOR BMW A TTORNE Y 2,488,394 LING Nov. 15, 1949 M. GOLDBERG FILLING MACHINE HAVING RETICULATED DRUMS FOR FIL FABRIC CQNTAINERS WITH FIBROUS MATERIAL 3 Sheets-Sheet 3 Filed Aug. 9, 1945 Fig. 6

MAX GOLDBERG INVENTOR ATTORNEY Patented Nov. 15, 1949 UNITED srA'ras PATENT OFFICE zmm- FILLING momma navmc narrow-ran mums roa FILLING FABRIC conmmras wrrn rmaous MATERIAL Max Goldberg, New York, N. Y. Application August 9, 1945, Serial No. 09,745 2 Claims. (Cl. 226-19)' This invention relates to a filling machine for filling containers with fibrous filling material particularly of the very air buoyant type, such as the downy covering of cattails, known in the art as- Typha. Also for such filling materials as kapok. down and the like, and particularly into non-porous containers.

An object of this invention is to provide a filling machine in which containers are filled with material which is so light as to practically float in the air.

Another object of this invention is to provide a filling machine having two co-acting perforated drums mounted to rotate toward each other within openings in the side walls of a hopper, and feed fibrous filling material from the hopper through a nozzle and into a container to be filled.

Another object of this invention is to provid suction means connected with suction chambers fixed inside the perforated drums through which the air entrained between the interstices of the fibrous material is removed therefrom while the drums exert a feeding action on the fibrous material.

With the above and other objects in view, the invention will be hereinafter more particularly described, and the combination and arrangement of parts will be shown in the accompanying drawings and pointed out in the claims which form part of this specification.

Reference will now be had to'the drawings, wherein like numerals of reference designate corresponding parts throughout the several views, in which:

Figure 1 is a top plan view of the two-drum filling machine.

Figure 2 is a cross-sectional view, the section being taken as on line 2-2 in Figure 3.

Figure 3 is a view showing a front elevation of the filling machine, partly broken away to show the interior of the drums.

Figure 4 is an end view of the filling machine.

Figure 5 is a front elevation of the filling machine showing drive mechanism.

Figure 6 shows a fragmentary portion of the' filling machine taken along the outer surface of the front wall of the casing, the front wall being broken away to show a semi-circular gasket.

In the illustrated embodiment of the invention, the numeral I0 indicates a filling machine for filling containers such as cushions, pillows, etc., with material which is so light as to practically float in the air.

]- mounted in bearings l2, l2 at the front wall l3 of the casing II are two shafts 14, ll with their axes in a horizontal plane. The shafts extend into the casing II and have drums I5, 15 secured at their ends inside the casing. The casing II has side openings Ii, I. in opposite side walls through which portions of the drums extend outwardly.

Gears l1, II are fixed to the shafts II, M and are in intermeshing relation. A pinion gear I! carried by a motor 20 is in intermeshing relation with one of the gears l1 and when the motor shlaft rotates, the drums l5 rotate towards each 0 er.

For the purpose of this invention, the drums cumferences. The casing II has an inlet or hopper portion II for filling material at its upper end. The casing has a nozzle or outlet 22 at its lower end.

The drums are in slightly spaced-apart relation and provide a passageway 23 from the inlet of the hopper H to the outlet 22.

Suction housings or chambers 25 are fixedly secured inside the rotatable drums l5. Each suction chamber has an open arcuately shaped side adjoining the inner periphery of a drum. Suction means such as an air blower 26 is in communication with the suction chambers 25, by means of a pipe 24.

It is to be noted that the filling material has interstices between the fibers, and when deposited in the inlet or hopper portion ll of the casing I l is fed by the drums is into and through the nozzle 22 and into a container 28 suitably held by the nozzle. The air displaced by the filling material from the container 28 is removed by the suction means 26. The air passes outwardly from the container through the interstices between the fibers in the nozzle. The direction of fiow of the air is opposite to the direction of ggeding of the filling material through the nozzle Traetive driving force between the fibrous material and the peripheral surfaces of the drums II is imparted to the fibers by the suction through the apertures IS in the drums l5 which form nodules of fibrous material in each perforation.

At the greatest compression point 30, or the point where the two drums are nearest, the-filling material is compressed and acquires its greatest tractive driving force to deliver the material into and through the nozzle.

The filling machine ll comprises a casing ll At a lower clearance point 3| where the nozzle walls adjoin the revolving drums there are sealing strips 32 which are fixed to edges of the suction chambers 25 and frictionally contact the inner peripheral surfaces of the revolving drums IS.

The compressed material passes the point of greatest compression 39, breaks up into batches, and continues this motion for a short distance due to the influence ofthe suction through the apertures l9. Sealing strips 33 fixed to the upper edge portions of the nozzle 22 compensate for mechanical clearances and prevent air at atmospheric pressure from leaking into the sub-atmospheric nozzle chamber.

The adhering filling material on the drums, after passing the lower edges of the walls of the eryof a drum, suction means in communication with said suction chambers and with said filling material in said casing through said perforations, whereby fibrous material having interstices and deposited in said hopper is fed by said drums into and through said nozzle while the entrained air is removed from said filling material through said interstices, the direction of the flow of said entrained air being opposite to the direction of feeding of said filling material into said nozzle,

a said nozzle being under sub-atmospheric pressure,

' and sealing strips fixed to edges of said auction suction chambers, is past the influence of the with substantially air buoyant material, comprissuction in the suction chambers through the perforations and is released from contact with the apertured drums and is forced downward by the compressed material at the point of greatest compression 39 directly into and through the outlet 22.

As shown in Figures 1 and 6, a substantially semi-circular gasket fits between the drum [5 and the casing II and prevents leakage around the drums. The gasket is held in any suitable manner in fixed relation to the casing. Four gaskets are employed, one gasket at each end face of the drums.

Each drum l5 has an annular flange 29 at the end opposite the solid end wall 34. Each flange 29 is in frictional engagement with a gasket 35 on the side of the casing H facing the suction means 26. A flanged sleeve 36 is fixed to the wall 34 by rivets 37. A pin 38 secures the shaft it to the flanged sleeve 36.

As shown in Figure 2, a branch pipe 24' is suitably connected to the suction housing 25 by a flange 21. Each of the suction housings 25 has a flange for connection with the branch pipe 24'. It is to be noted that the suction chambers 25 are secured to the pipes 24'.

In accordance with the patent statutes I have described and illustrated the preferred embodiment of my invention, but it will be understood that various changes and modifications can be made therein without departing from the spirit of the invention as defined by the appended claims.

I claim:

1. In a filling machine for filling containers with substantially air buoyant material, comprising a casing, two perforated drum's rotatably chambers and frictionally contacting said drums to prevent air under atmospheric pressure from leaking into said nozzle.

2. In a filling machine for filling containers ing a casing, two perforated drums rotatably mounted in said casing with their axes lying in a single horizontal plane, means for rotating said drums toward each other, said casing having a hopper portion or inlet at its upper end and a nozzle at its lower end, said drums being slightly spaced apart and providing a passageway therebetween from said hopper to said nozzle, suction chambers fixedly secured inside said rotatable drums, each suction chamber having an arcuately-shaped open side adjoining the inner periphery of a drum, suction means in communication with said suction chambers and with'said filling material in said casing through said perforations, whereby fibrous material having interstices between the fibers and deposited in said hopper is fed by said drums into and through said nozzle while the entrained air is removed from said filling material through said interstices, the direction of the flow of said entrained air being opposite to the direction of feeding of said filling material into said nozzle, said nozzle being under sub-atmospheric pressure, and sealing strips fixed to edges of said suction chambers and frictionally mounted in said casing with their axes lying in contacting said drums to prevent air under atm'ospheric pressure from leaking into said nozzle, said suction chambers having walls positioned substantially radially of said drums, the distance between said radial walls being less than the distance between said sealing strips.

MAX GOLDBERG.

REFERENCES CITED The following references are of record in the file of this patent:

, UNITED STATES PATENTS Clark Aug. 1, 1944

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