US2642276A - Weighing and packaging machine - Google Patents

Description

Julie 16, 1953 MQNSQN 2,642,276

WEIGHING AND PACKAGING MACHINE Filed Feb. 23, 1952 ATTORNEY Patented June 16, 1953 UNITED STATES PATENT OFFICE WEIGHING AND PACKAGING MACHINE Martin B. Morison, near Henderson, 0010.

Application February 23, 1952, Serial No. 273,079

4 Claims.

This invention relates to a bag conveyor for 2 and highly efficient bag holder upon which open bags may be rapidly and easily hung, and which will convey the open bags past filling opera-tors in a position to be easily and rapidly filled, and to so construct the bag holders that they will individually indicate to the filling operators when a predetermined weight of material has been placed in each bag, with a minimum of manual labor being required.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efiiciency. These will become more apparent from the following description.

In the following detailed description of the invention, reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing:

Fig. 1 is a plan View of a bag filling table, illustrating the improved conveyor and bag holder in place thereon;

Fig. 2 is an enlarged cross-section through the table, taken on the line 2-2, Fig. 1;

Fig. 3 is a detail perspective view, illustrating the type of bag holder employed in the invention; and

Fig. 4 is a detail section, taken on the line 4-4, Fig. 1.

The improved bag conveying and weighing device employs a table top 12 supported at a convenient height in any desired manner. The table top is provided with a bag compartment l and a material compartment H, the remainder serving as a packing platform.

Two sprocket shafts l3 arise from the table top 12 and support two horizontal chain sprockets [4 in spaced-apart relation, there being one shaft and one sprocket adjacent each extremity of the table top I2. An endless link belt or chain [5 is trained about the two sprockets [4. The lower edge of the chain frictionally engages the table top to support the chain between the sprockets. The two reaches of the chain are maintained in parallel, spaced relation by means of a raised central spacing block [6 against the opposite sides of which the chain bears.

A plurality of supporting standards H are mounted on and secured to certain of the links of the chain 15 at uniform intervals so as to arise therefrom in spaced-apart relation. The

standards are prevented from tilting outwardly at their tops by means of slide bars 18 which are supported above the top 12 and above the two parallel reaches of the chain I5 on suitable supporting brackets l9 which are secured to the table top in any desired manner, such as by means of suitable clamping nuts 20. As the chain [5 travels, the standards 11 slide along the inner faces of the bars [8.

Each standard I1 is bent outwardly and upwardly at its upper extremity to form a substantially horizontal bracket arm 2| having a bifurcated outer extremity. A bag lever 22 is tiltably mounted in the bifurcated extremity of each bracket arm 2| on a suitable hinge pin 23. A bag-supporting plate 24 is fixedly mounted on the outer extremity of each bag lever 22 in T- shaped relation therewith. Each bag plate 24 terminates at its extremities in upturned, bagengaging points 25 upon which one side of the open mouth of a bag, such as indicated in broken line at 26, may be hung.

A scale beam rod 21 is formed on and projects inwardly from each bag lever 22 and supports an adjustable counter-balance weight 28 which may be set in any desired position along the beam 21 by means of a suitable set screw 29. The upward swing of the scale beam 21 is limited by means of an overlying restraining hook 30 which is mounted on the bracket arm 2|. The structure mounted on all of the standards i7 is similar to that described.

Let us assume that the chain is traveling in a direction as indicated by the arrows in Fig. 1. An operator takes a bag from the bag compartment l0 and impales the rear edge of the bag opening upon the points 25. The bag hangs open and is conveyed to filling operators who take materials from the material compartment II and place them in the bags 26 until the scale beam 2'! of each bag rises to engagement with the hook 30, as shown on the right side of Fig. 2. The filled bags are then conveyed around the end sprocket M to the packing platform i2, where the bags are removed, sealed, and packed. The empty bag holders return continuously to the bag placer.

While a specific form of the improvement has been described and illustrated herein, it is to be understood that the same may be varied, within the scope of the appended claims, without dep rting from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent is:

1. A bag supporting and conveying device comprising; a table t p; a P ir of sprocket shafts aeeaeve mounted on and extending upwardly from said table top; a chain sprocket mounted on each shaft in horizontal alignment with each other above the table top; an endless chain trained about said two sprockets, said chain being supported intermediate the sprockets on said table top; chain spacing means frictionally engaging the inner faces of each reach of said chain to prevent inward movement of the latter; supporting standards mounted on and arising from said chain at spaced intervals; slide bars frictionally engaging said standards and acting to prevent outward movement of the latter; and a bag-engaging device carried by each of said standards.

2. A bag supporting and conveying device as described in claim 1 in which the bag-supporting devices comprise: a hinge. member supported at the upper extremity of each standard; a bagsupporting lever tilt'ably mounted on and projecting outwardly from each of said hinge members; and a scalebeam rod projecting inwardly from each of said bag-supporting levers so that a premounted on each scale beam rod; and means mounted on each standard for limiting the degree of upward movement of the scale beam rod there- 4. A bag supporting and conveying device as described in claim 3 having a T-shaped head formed on the outer extremity of each bag lever; and a bag-engaging point extending upwardly from each extremity of said head upon which an open bag may b hung. I

MARTIN B. MONSON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 442,537 OBrien Dec. 9, 1890 643,102 Bates Feb. 13, 1900 819,930 Sawyer May 8, 1906 975,005 Wade Nov. 8, 1910 992,513 McAnulty May 16, 1911 1,230,734 Lilja June 19, 1917 1,856,904 Campbell May 3, 1932 2,318,156 Hannah May 4, 1943 2,359,786 Pechy Oct. 10, 1944 2,564,544 Richardson Aug. 14, 1951 Peterson Aug. 5, 1952

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