US1730295A - Packing device for automatic sack-weighing machines - Google Patents

Description

Oct

- 1929. J. w. REUTHER 30,295

menus DEVICE FOR AUTOMATIC SACK wnmnme mcnmns Filed April 2, 1928 2 Sheets-Sheet 1 Oct. 1, 1929. J. w. REUTHERV PACKING DEVICE FOR AUTOMATIC SACK WEIGHING MACHINES Filed April 2, 1928 2 Sheets-Sheet Patented Get. l, 192% mazes PACKING DEVICE FOR AUTOMATIC 'sAcK-wmsnme macnrnns Application filed April 2, 1928, Serial No. 266,778, and in eerme'nyaprii- *7, 1927.

In automatic weighing machines in which the material runs into sacks there are used packing devices in which the packing members act against the sides of the sack, there 5 being generally used two such packing members between which the sack is suspended. The packing members are arranged atthe same level and act either alternately or simultaneously against the sack. If the packing members strike the sack alternately, the action is quite insutiicient, but even when the packing members strike the sack simultaneously it is found that the packing is not'sufhcient because it the members act at the same level against the sack it is scarcely possible to secure a sufiiciently deep penetration of the oppositely arranged packing members, even if they are operated with considerable force. Accordingly there was effected only a comparatively slight shift of the contents of the sack between the two packing members.

According to the present invention the two packing members are arranged to engage the sack simultaneously, but at difierent levels, either transversely to the vertical axis of the sack or at an angle thereto. By such operation the sack or its contents is, so to speak, bent to one side. The shifting of the contents of the sack effected thereby results in particularly good packing action, which is I considerably enhanced when the packing device is constructed to be double-acting, two packing members being arranged at each side of the sack, of which the upper member at one side operates simultaneously with the lower packing member at the other side of the sack, and thereupon the lower packing member at the first mentioned side operates simultaneously with the upper packing member at the other side. Thus the packing members arranged opposite each other do not operate simultaneously but alternately. The sack is therefore bent alternately to one and the other side, so that a firm packing is effected in a very short time. This bending to and fro of the sack avoids injury to the sacks and creation of dust.

To effect uniform packing irrespective of the diameter of the sack, the packing members may be adjustable or replaceable.

In the accompanying drawing, Fig. 1 is a side elevation of the device, the packing members adapted to operate on the sack being shown in neutral position.

Fig. 2 is an elevation at right angles to. Fig, 1. i Fig. 3 is a similar-view to Fig. 1 with the packing members in working position, and

Fig. i a similar view of a single-acting device. v

Fig. 5 is a plan showing means for adjustment of the packing members. a,

In the constructionshown in Figs. 1, 2

On one end of each of the shafts a and b is mounted a double-armed packing member 0 or (Z, and on the other end of the shaft is mounted a lever'f'e' or f; The leverse and f are connected by connecting rods 70 and Z with a crank 2' fixed to the shaft 9 which may be thrown intov gear by a clutch h. .By the rotation of the shaft 9 and thus of the crank z the two packing members 0 and (Z are alternate-ly pressed against the sack, that is to say, the pressing headd of the member'd presses against the sack near the. top while the pressing head 0 of the member 0 presses against the sack near the bottom, Fig. 3. In a similar manner the pressing head d of the member (Z will press against the sackat a Y lower point when the pressing head 0 of the member 0 impinges 0n the sack higher up.

' The sack will thus be bent, and the flour within the sack, on every rotation of the crank 2', will be subjected to agitation and pressure, whereby the packing is effected in an extremely short time.

and 3 the packing device is double-acting.

sition by springs n pressing prejections p into nctehes 0 in the arms or members a.

I claim:

1. In sack packing mechanism, means for alternately simultaneously exerting pressure against opposite sides of the sack at different levels whereby to eflect a bending of the sack alternately in opposite directions in the successive operation of the means.

2. In sack packing mechanism, spaced packing members arranged to coact with 0pposite sides of a sack to be packed, and means for actuating said members to efiect pressing engagement of the same with the sack simultaneously at different levels, whereby to effect a bending of the sack between the points of engagement of the members therewith.

3. In sack packing mechanism, spaced packing members arranged to coact with 0ppositcsides of a sack to be packed, the members being mounted, between their upper and lower ends, for rocking movement and each being provided with upper and lower presser heads to engage the sack, and means for actuating said members to alternately effect simultaneous engagement of non-corresponding ones of the presser heads of the members with the respective proximate portions of the sack, whereby to effect a bending of the sack alternately in opposite directions between the points of engagement of the me1nbers therewith.

In testimony v whereof I have signed my name to this specification,

JOHANN WILHELM REUTHER.

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