US2669476A - Bag seal - Google Patents

Description

Feb. 16, 1954 w. M. BROOKS 3 Sheets-Sheet l Filed July 5, 1951 Jew e 5 Feb. 16, 1954 w. M. BROOKS BAG SEAL 5 Sheets-Sheet 2 Filed July 3, 1951 Patented Feb. 16, 1954 BAG SEAL Winfred M. Brooks, West Orange, N. J., assigner to E. J. Brooks Company, Newark, N. J., a corporation of New Jersey VApplication July 3, 1951, Serial No. 235,077

3 Claims. 1

The present invention is an improvement on the bag seal shown in U. S. Patent No. 2,163,660 of June 27, 1939, and has for its main object a device for sealing bags in which the loops of strand or cord-material can be drawn Very tightly around the bag without severing the cord during the tightening operation. The present application is a continuation-in-part of application Serial No. 226,724, iiled May 16, 1951, now abandoned.

lin the accompanying drawings, the invention is shown in several preferred and concrete forms, in which:

Fig. 1 is a view in side elevation of the sealing device before the loops are placed around the mouth of the bag;

Fig. 2 is a view similar to Fig. l but looking in the direction of arrow 2 of Fig. l, with parts broken away and in section;

Fig. 3 is a sectional view of the sealing-element, substantially on the plane of line 3 3 of Fis. 2;

. Fig. 4 is a top plan view of the sealing-element showing the cam-portion that is located at one end of the main-portion oi said sealingelement;

Fig. 5 is a view similar to Fig. 1 but shows the loops of the strand-material tightened around the bag;

Fig. 6 is a detail view of one form of guardmember used in connection with the invention;

Fig. 7 is a perspective view showing the sealing device in position on the bag with loops of the strand-material drawn tightly around the bag, and the sealing-element deformed;

Fig. is a vertical sectional View, on an enlarged scale, substantially on the plan-e of line 3-8 of ig. 1;

Fig. 9 is a sectional view, substantially on the` plane oi' line 2--9 of 10, showing a modied form of the invention;

Fig. 10 is a top plan view of the parts shown in Fig. 9;

Fig. 11 is a view similar to Fig. 6 but shows a modified construction of the guard-member;

Fig. 12 is a view similar to Fig. 10 but shows a still further modied form of the invention;

Fig. 13 is a View similar to 7 but shows the deformation of the sealing-element accomplished in a different manner;

Fig. 14 is a View similar to Fig. 2, but is in perspective and discloses a different method of threading the strand-material;

rigs. u15 to i9 inclusive-show a stili minier modication of the invention;

Fig. 15 is a View, partly in elevation and partly in section, of a sealing device;

Fig. 16 is a vertical, sectional View, substantially on the plane of line I6-|6 of Fig. 15;

Fig. 17 is a view similar to Fig. 15 but shows the effect of the guard-member upon the sealing-element, by tightening the cord;

Fig. 18 is a view similar to Fig 16 but shows the parts arranged in the manner in which they are disclosed in Fig. 17; and

Fig. 19 is a horizontal, sectional view, substantially on the plane of line iB--lSof Fig. 17.

Referring rst to the form of the invention shown in Figs. 1 to 8 inclusive, the sealing device consists of a sealing-element 20 of relatively compressible material such as lead, :a guardniember 2| of relatively rigid and non-compressible sheet-material such as steel, and a strand 22, preferably of iibrous material, Which strand is threaded through the sealing-element and guard-member to form two loops 23 and 24. The loops are placed around the mouth of a bag 25, guard-member 2| being interposed between the bag and sealing-element 20, after which the loops are tightened around the bag and the sealingelement is deformed in a suitable manner such as that indicated in Fig. 7. Heretofore, care had to be taken during the tightening operation not to overpull the strand-material and thereby sever it at the place Where it is pinched by the sealing-element and guard-member, as the guard-member constituted both a gripping and a severing-member. The disadvantage of the former construction is overcome by the means now to be described, which means are characterized by having a portion of the sealing-element extend into the opening of the guard-member to clamp the strand-material against the interior wall of the opening in the guard-member.

Sealing-element 26 consists here of a mainportion 26 and a cam-portion 27, said cam-portion, during the tightening operation, entering a central opening 28 in guard-member 2| and wedging or clamping the strand-material against the interior Wall of flange 29 of said opening 23. In the present instance, strand-material 22 is threaded through a transverse opening or perforation 36 in main-portion 26 of sealing-element 26, one end of the strand-material being then threaded through a perforation 3| in guardmember 2| to form loop 24, the other end of the strand-material being threaded through perforation 5.12 of guard-member 2| to form loop 23. The free ends of the loops of strand-material are now threaded through central opening 28 of guard-member 2l, and are then passed through longitudinal perforations 33 and 34 of sealingelement 20. Cam-portion 21 of sealing-element 26 is of double-taper formation and extends from one end of sealing-element 29. Base 35 of `said double-taper cam-portion 21 is narrower than the width of main-portion 26 of the sealingelement, and perforations 33 and 34 of the mainportion continue into cam-portion 27 in the form f of open grooves 36, to receive the strand-material.

In the form here shown, flange 29 is continuous and surrounds opening 28 completely, and it will be seen that said flange intersects the planes of perforations 33 and 34. Thus the strand-material, when tightened around the bag, is gripped or clamped very frmlv but is in no danger of being severed by overpulling.

In Figs. 9 and 10, sealing-element 2lia ls shown in juxtaposition to guard-member 21a, the showing of the strand-material being omitted. Guard-member 21a, instead of having a circular opening as 2B of 6, is provided with an opening 28ab which is substantially in the form of a hexagon. The strand-material is clamped between interior wall 29a of opening 28EL and camportion 2'!a of the sealing-element in the manner previously described.

Fig. 11 shows a different form of guard-member 2lb from that disclosed in Fig. 6, in that, instead of circular openings 3| and 32, said guard-member is provided with cut-away Vportions Bla and 32a which are the equivalent of openings 3| and 32 of Fig. 6.

Fig. 12 shows a view similar to Fig. 10. the chief difference being that guard-member Zic is provided with a central opening 28C that is substantiallv in the form of a rectangle, in which oneninrlr th ere are formed strand-material receiving-pockets 28d.

Fig. 13 is a view substantially like Fig. 7 but shows a different mode of deforming sealingelement 24 in that the device used to deform the sealing-element can also impress lettering thereon. as indicated bv A, B and C.

YIn the previously-described forms of the invention. the threadingr of the strand-material has been through a transverse perforation in the sealing-element. then through the guard-member into loon formations, and finally .longitudinallv back through the guard-member and seal- V ing-element. As shown by Fig. 14, sealingelement 20h be. provided with four longitudinal perforations 31, 38, 39 and 40, and strandmaterial 4i can be threaded through outer perforations 31 and 39, and through openings 311 and B2b guard-member 2lf into loop formations, then returned back through central opening 28g of the guard-member, and finally through inner Vperforations 38 and 40 of the sealingelement. Y

In Figs. 15 to 19 inclusive is shown a still further modication of the invention. Here sealingelernent I has no preformed cam-portion but, when strand-material 42 is pulled tightly around the bag, the lower end 43 of flange 44 of guardmember 45 will engage and indent end surface 46 of said sealing-element 5I, and thereby a portion 41 of said sealing-element will enter opening 49 of the guard-member and will clamp the strand-material securely against interior Wall 50 of flange 44. Portion 41 therefore becomes, in effect, a cam-portion of sealing-element 5 I-. Surface 46 can be initially straight or slightly curved, as shown in Fig. 15.

I claim:

1. In a sealing device ln which strand-material is to be tightened around the mouth of a bag of flexible material after being threaded through perforations in a sealing-element and through a guard-member that is interposed between said sealing-element and said bag: a sealing-element composed of compressible material perforated to receive strand-material; a guard-member composed of non-compressible and rigid sheetmaterial having an opening to receive strandmaterial to be threaded through the perforations in said sealing-element; and a dependent flange on Vsaid guard-member adjacent the opening thereof, said flange extending across the perforations in said sealing-element, the lower edge of said flange engaging and indenting that surface of the body of said sealing-element which is adjacent to said flange when the strand-material is tightened around the'bag, whereby a portion of said sealing-element extends within the flanged opening of said guard-member and clamps the strand-material against the interior wall of said flange.

2. In a sealing device in which strand-material is tightened around the mouth of a bag of flexible material after being threaded through perforations in a sealing-element and through a guardmember that is interposed between said sealingelernent and Said bag: a sealing-element composed Of compressible material perforated to receive strand-material; a guard-member composed of non-compressible and rigid sheet-material having an opening to receive strand-material threaded through the perforations in said sealing-element; a dependent flange of non-compressible and rigid sheet-material carried by said guard-member adjacent the opening thereof, said flange extending across the perforations in said sealing-element; and a portion, carried by said sealing-element, that extends into the opening in said guard-member and clamps the strandmaterial against the interior wall of said flange.

3. In a sealing device in which strand-material is tightened around the mouth of a bag of flexible material after being threaded through perforations in a sealing-element Vand through a guard-member that is interposed between said sealing-element and said bag: a sealing-element composed of compressible material perforated to receive strand-material; a guard-member composed of non-compressible and rigid sheetmaterial having an opening to receive strandmaterial threaded through the perforations in said sealing-element; a dependent flange of noncompressible and rigid sheet-material carried by said guard-member adjacent the opening thereof, said flange extending across the perforations in said sealing-element; and a double-taper camportion, carried by said sealing-element, that extends into the opening in said guard-member and clamps the strand-material against the interior wall of said flange. Y

WINFRED M. BROOKS.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 2,140,777 Wenk Dec. 20, 1938 2,163,660 Brooks June 27, 1939 FOREIGN PATENTS Number Country Date 42,770 France Oct.10, 1933 Y. 0f 7314375

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