Патент USA US2140777код для вставки
Dec. 2-0, 1938._ H. L. c. WENK. JR 2,140,777 BAG SEAL Filed Aug. 12, 1938 - INVENTOR. 19222911 6.772722f, ('75:, ' BY ' ATTORNEY. 2,140,777 Patented Dec. 20, 1938 UNITED STATES PATENT» OFFICE 2,140,’? 77 BAG SEAL Henry L. C. Wenk , Jr., Jamaica, N. Y. Application August 12, 1938, Serial No. 224,469 5 Claims. (Cl. 292—308) rl‘rhis invention relates to improvements in bag seals of the type provided with a deformable lead seal body to engage and secure a tie cord ar ranged to encircle the gathered neck of a bag so as to close the mouth of the same against unauthorized access to the bag content. i) Bag seals of the kind to which this invention has reference are extensively used by banks, post of?ces, express companies and others to inviola 10 bly enclose money, valuables and the like. In the use of such bag seals, once a seal is op eratively applied to a bag it cannot be removed therefrom except by severing the tie cord there of. In the operation of cutting the tie cord 15 which, as operatively encircling the neck of the bag, closely hugs the bag material, there is always risk that the bag material will be gashed, thus destroying the future usefulness of the bag. This is objectionable since, in practice, the bags are otherwise intended to be used over and over again. It is an object of this invention to provide, in combination with a bag seal of the kind men tioned, novel means which will support the tie cord in such manner as to ef?ciently back the same against a cutting operation, while at the same time so localizing and guiding the cutting action as to prevent any contact of the cutting knife with the material of the bag, thus eliminat ing all risk of gashing the bag and destroying its future usefulness; furthermore, the novel means serving such functions, is designed additionally to both retain the bights of the tie cord, which operatively encircle the bag neck, under strong restrictive tension, whereby the same can not be stretched and loosened or shifted along and off the bag neck, while at the same time providing means to quickly part the bights when the same I): are severed or partially severed, so that the tie 40 cord quickly and easily releases itself and the seal body from the bag when authorized opening of the bag is desired. Other objects of this invention, not at this time more particularly enumerated, will be ' understood from the following detailed descrip tion of the same. An illustrative embodiment of this invention is shown in the accompanying drawing, in which: Fig. 1 is a side view of a bag closed and sealed = '. by the operative application thereto of a seal made according to this invention; Fig. 2 is an enlarged face view of the novel seal structure per se, and Fig. 3 is a transverse sectional View, taken on line 3-3 in Fig. 2. 55. Fig. 4 is an enlarged sectional view, taken on line 4—4 in Fig. 1, showing the novel seal as applied to a bag neck in closing and sealing rela tion thereto; Fig. 5 is a similar view, showing the effects of a ?rst cutting operation when re moving the seal from the bag; and Fig. 6 is a similar view showing the effects of a ?nal cutting operation when removing the seal from the bag. Similar characters of reference are employed in the above described views to indicate corre sponding parts. 10 Referring to the drawing, the reference char acter Ill indicates a seal body, the same being ordinarily made of lead or like relatively soft and easily deformable metal capable of being crushed ' and corrugated so as to immovably aflix the same to its associated tie cord. Initially formed in said seal body in are longitudinally extending tie cord receiving passages or openings, usually com prising a pair of inner openings H and a pair of outer openings l2; said openings being suitably relatively spaced apart. 20 Associated with the inner or bag abutting end of said seal body ill, to extend longitudinally and axially therefrom, is a compression spring sleeve E3 of spirally helical form, and preferably of frustro-conical shape, with~ its ‘smaller end abutted, and, if desired, affixed, to said inner end of the seal body, so that its larger end, in use, will bear against the gathered and closed neck 30 of a bag to which the seal is applied. Operatively related to said seal body Ill and the spring sleeve I3 is a tie cord arranged to provide a pair of connected bag encircling loops i4 and E5, the respective inner branches of which are formed by the respective free end portions l6 and ii of said cord, which extendv through the interior of said spring sleeve l3 and thence through the inner openings H of the seal body it to project freely from the outer end of the latter, while the outer branches l8 and E9 of said loops pass exteriorly along said spring sleeve l3 and thence through the outer openings E2 of the seal body Iii, being connected by a bight 28 ex tending between the outer ends of said openings 12 and across the outer end of said seal body ill. In operatively applying the seal to a bag 2|, the neck 22 of the latter is gathered and con stricted to close the mouth thereof. When the bag is thus closed, the loops M and I5 of the seal tie cord are engaged over the neck 22 so as to encircle the same, with the spring sleeve l3 abutting a side of the gathered and closed neck 22. When the tie cord loops are thus posi tioned and engaged relative to the bag neck 22, the free ends of the tie-cord are pulled out 55 2 2,140,777 wardly from the seal body l0, thus constricting the loops ill and i5 tightly about the bag neck, and at the same time compressing the spring sleeve l3 so as to close up the helices thereof and thus place said sleeve under strong tensional con traction (see Figs. 1 and 3). It will be obvious that, in this operation, the branches of the loops l4 and i5 will readily slide through the unrestricted openings H and E2 of the seal body, 10 until the desired contraction of the loops l4 and I5 and compression of the spring sleeve I3 is attained. When the seal is thus operatively re lated to the bag neck 22, the seal body it? is sub mitted to the action of a suitable deforming press 15 or stamp, by means of which the metal thereof is suitably compressed and crimped or corrugated to thereby tightly close up the openings II and i2 of the seal body so that the material of the latter grippingly binds the sections of tie-cord 20 extended therethrough against movement rela tive to the seal body. Preferably the seal body is transversely bent or corrugated as shown in Figs. 1, 4, 5 and 6, thereby eifectively preventing any tampering manipulation of the seal body with 25 intent to release its grip upon the tie cord. The shown and described frustro-conical form of the spring sleeve I3 is preferable, because it provides, when closed, tie cord backing portions which incline away from the bag neck 22 and to ward the inner end of the seal body l0, whereby any accidental slip of the cutting knife, when op eratively manipulated, is de?ected toward the seal body 10, by which it may be arrested to the pro tection of the operator against accidentally cut ting himself, as well as away from the bag ma terial to the better safe-guarding thereof against accidental gashing. While for these reasons said frustro-conical shape of spring sleeve I3 is pref erable, it will nevertheless be understood that, in its broader aspects, my invention is not to be lim ited to such speci?c form and shape of spring 15 sleeve, since many other shapes, including a sim ple cylindrical shape, may be employed and will attain the essential advantages of my invention. Having thus described my invention, I claim: 20 1. A bag seal comprising, a deformable seal body having tie cord passages, a tie cord extend ing through said passages so as to form con strictive bag neck encircling loop means extend ing from the inner end of said seal body, and a tensionally compressible means projecting from 25 Owing to the compression of the spring sleeve l3 intermediate the bag neck 22 and the crimped the inner end of said seal body to abut an en seal body [0, a strong tensional stress is exerted gaged bag neck, portions of said tie cord loop therebyupon the bag neck encircling loops of the means being disposed to extend exteriorly over 30 tie-cord, by reason of which stretching, loosen said latter means from said seal body. 30 ing or shifting of said loops relative to the bag 2. A bag seal comprising, a deformable seal neck is impossible of attainment. Furthermore, body having tie cord passages, a tie cord extend both stretch and contraction of the tie cord, due ing through said passages so as to form constr'ic- ‘ to changes of atmospheric or like conditions to tive bag neck encircling loop means extending which it may be exposed, is efdciently compen from the inner end of said seal body, and an sated by the tensional stress of the spring sleeve axially compressible spring sleeve foo-ted upon l3 as operatively interposed between the bag neck the inner end of said seal body to abut an en 22 and seal body ll]. gaged bag neck, portions of said tie cord loop When it is desired that the bag be opened under means being disposed to extend from said seal authorized conditions, the authorized operator body exteriorly over said spring sleeve. may do so by severing the loops l4 and i5 of the 3. A bag seal comprising, a deformable seal 40 tie cord by operatively applying the cutting edge body having tie cord passages, a tie cord extend of a knife thereto. Such cutting operations are greatly facilitated by reason of the presence of 45 the contracted spring sleeve l3 which not only provides a backing for the tie cord sections to which the knife is applied, but also serves as an interposed guard between such tie cord sections and the material of the bag, so that accidental cutting or gashing of the bag material'during the tie cord severing operations is e?iciently guarded against. To sever the tie cord, the operator ap plies his knife against a section of the cord which overlies the exterior side of the spring sleeve 13. Since the helices of said spring sleeve are closed together by the compression of the latter, the sleeve is thus readily adapted to provide both a cord backing and bag material guard interme diate the cord and bag. Assuming the operator cuts ?rst through the branch [9 of loop IS, in such case release and partial tensional expansion of the spring sleeve l3 aids in parting this branch I9 so as to cause the loop l5 to open up- (see Fig. 5). Loop l5 being thus opened, the operator thereupon next cuts through the branch l8 of loop l4, whereupon said spring sleeve l3 being wholly released for reactive expansion, the oc currence of such expansion immediately causes the loops l4 and I5 of the tie cord to fully relax and open out, so that the seal and its tie cord is automatically caused to spring away from the bag neck and drop therefrom, thus releasing the bag neck so that the mouth of the bag may be thereupon opened and the contents of the bag removed. ing through said passages so as to form constric tive bag neck encircling Ioop means extending from the inner end of said seal body, and an axially compressible spirally helical spring sleeve 45 of frustro-conical form having its smaller end abutting the inner end of said seal body and its larger end adapted to abut an engaged bag neck, portions of said tie cord loop means being dis posed to extend from said seal body over the di 50 vergent exterior sides of said spring sleeve. 4. A bag seal comprising, a deformable seal body having longitudinally extending outer and inner pairs of tie cord passages, a tie cord hav ing its free end portions extending through said 55 inner seal body passages, said tie cord being ar ranged to provide constrictive bag neck encir cling loop portions having connected outer branches respectively extending through said out 60 er seal body passages, and an axially compres sible spring sleeve footed upon the inner end of said seal body to abut an engaged bag neck, said free end branches of the tie cord loops being dis posed to extend interiorly through said spring 65 sleeve from said seal body and the outer branches of said tie cord loops being disposed to extend ex teriorly over said spring sleeve from said seal body. ' 5, A bag seal comprising, a deformable seal 70 body having longitudinally extending outer and inner pairs of tie cord passages, a tie cord having its free end portions extending through said in ner seal body passages, said tie cord being ar ranged to provide constrictive bag neck encircling 75 2,140,777 loop portions having connected outer branches respectively extending through said outer seal body passages, and an axially compressible spiral ly helical spring sleeve of frustro-conical form having its smaller end abutting the inner end of said seal body and its larger end adapted to abut an engaged bag neck, said free end branches of , 3 the tie cord loops being disposed to extend in teriorly through said spring sleeve from said seal body and the outer branches of said tie cord loops being disposed to extend from said seal body over the divergent exterior sides of said spring sleeve. 5 HENRY L. C. WENK, JR.