Патент USA US2132598код для вставки
Oct. 11, 1938. ' L. J. BARTON VENTED STOPPER 2,132,598 _ Filed March 7, 1956 6 3 3 4 J74, 5... guam y ./ /\VH5_ ,, we INVENTOR. LARRY J. BARTON - BY M - ATTORNEY. Patented Oct. 11, 1938 _ 2,132,598 ‘‘ UNITED STATES PATENT‘ 2,132,598 VENTED STOPPER Larry J. Barton, Oakland,’ Calif., assignor to 'Clorox Chemical 00., Oakland, Calif., a corporation of Delaware Application'March ‘7, 1936, Serial No. 67,678 OFFICE’ ‘ 7 .5 Claims. (01. 215-56)‘ . My invention relates to a vented stopper, and My invention is designed to overcome the above more particularly to a stopper adapted for con tainers such as carboys and jugs 'for various described di?‘iculties, and has as one of its objects the provision of an improved stopper of the char chemicals, such as hypochlorite solutions, which acter related, which has vent means therein a14 5 have the characteristic of slowly evolving a gas. vIn the handling of such chemicals, it is neces lowing gas to escape with absolute certainty, and 5 in such manner that there is no chance of sary to provide venting means in the container stopper to allow the escape of gas which is slow ly given o? by the substance in the container. The provision of, a vent ori?ce in ‘the stopper plugging or cementation of the vent means. I Another object of the invention resides in the provision of ,a stopper, of the character related, ,, which is of strong and economical construction. Other objects of the invention will become ap parent from a‘ perusal of the following descrip o?ers a problem, particularly with’ respect to liquid solutions containing salts such as occur in hypochlorite solutions. ‘This is . so because tion thereof. plugging or blocking of the vent ori?ce frequently occurs when some of the solution splashes on the "it ' In general, the vented stopper of my invention includes a stopper body portion of comparatively Yrs stopper, leaving, after evaporation, anaccumula ’ tion of salt residue which plugs the vent ori?ce. Heretofore, stoppers have been made of yield- able, compressible or elastic ,material, such as soft and compressible material, such as soft rub her, and a relatively hard and rigid insert therein, preferably of hard rubber. Instead of providing a single vent ori?ce through the interior'of the 20 soft rubber, which ‘when inserted into the mouth insert, as has heretofore been employed, an ori 20 of a jug, carboy or similar container, will e?ec ?ce is formed between the outer surface of the tively seal the mouth and thereby prevent the , insert and the inner surface of the'stopper body, escape ‘of the chemical solution in the container. by having the con?guration of the insert differ The provision of a vent ori?ce through the rela ent from that of the body aperture for the insert. 25 tively soft yieldable stopper is not satisfactory, Preferably, more than one of such ori?ces is pro because when the stopper is pressed into the vided, to insure adequate venting. The end of mouth of the container, to seal tightly the mouth, the insert and the end of the stopper body fac the pressure causes compression of the stopper ing the container, are so related with reference with consequent closing of the vent ori?ce. To to each other as to provide means whereby ma overcome this dii?culty, it has been the practice to terial splashing against the stopper can drain provide the stopper body with an insert of com away before it reaches the'vent ori?ce, thereby paratively hard and rigid material such as wood, protecting the container end of the vent ori?ce hard plastic material, glass, porcelain, or hard and'avoiding plugging of the ori?ce. rubber. A single vent ori?ce has been provided Reference will now be made to the drawing 35 through the interior of the insert. Hence, when for a more detailed description of the invention. vthe stopper proper is inserted into the mouth of I the container, the pressure transmitted, there through will not cause distortion of the relatively hard insert, and its vent ori?ce will not become 40 closed. Although the single vent ori?ce in the interior of the described relatively hard insert will not becomeclosed by virtue of distortion created by pressure, salt deposits which accumulate therein, jcaused either by material being carried through the vent ori?ce as'gas evolves or ‘by splashing of material against the ‘insert, gradually plug up the ori?ce. It is impractical to form more than one ‘ori?ce through the interior of the insert to pro 50 vide ‘for adequate escape of gas in case one ori ?cebecomes clogged, because the insert is ‘neces sarily limited in size in order not to interfere with the compressibility of the stopper body, and because of the cost involved in iorming'more than one interior ori?ce. Figure 1 is a transverse vertical sectional view through‘ one form of stopper of my invention; the section being indicated by line |—l in Fig. 2. Figure 2 is a horizontal section taken in a plane indicated by the line 2-2 in Fig. 1. 40 Figure 3 is a vertical sectional view through another form of stopper; the section being indi cated by line 3-—3 in Fig. 4. , Figure 4 is a horizontal section taken in a plane indicated by the line 4-—4 in Fig. 3. Figure 5 is a vertical sectional view of another embodiment of the invention; the section being indicated by line 5--5 in Fig. 6. Figure 6 is a horizontal section taken inthe plane indicated by the line 6—6 in Fig- 5.‘ ‘Figure ‘7 illustrates still a further embodiment of the invention, in vertical section indicated by line 1-’! Fig. 8. ' - Figure 8 is ahorizontal section taken in the plane indicated by the line 8-8 in Fig. 7. 2,182,598 In the modi?cation illust ated by Fig. 5, it will be noted that both the top of the stopper body I and the top of the insert 3 are relatively flush. However, the drainage and shielding effect for protecting the .container ends 6' of the vent ori ?ces 6 against plugging, is provided for by a With reference to Figs. 1 and 2, this form of stopper comprises a stopper proper or body I of comparatively soft, compressible material, such as soft rubber, or cork. The body I is formed with an aperture 2 leading from the outer to the container end I’ thereof, and adapted to receive and grip tightly therein the hard and rigid, elon flared concavity or cup-shaped recess 9 in the container end I’ of thestopper body I and adja gated insert 3, preferably'of hard rubber, or any cent the container end 3’ of insert 3, the stopper other hard material such as glass or'hard plastic having a skirt to provide the recess '9. This enables the container end 3’ of the insert to 10 material. The insert preferably extends beyond the container end of body I, and thereby provides protecting means against which splashing liquid extend beyond the container ends 6’ of the vent ori?ces 6 to protect the ori?ces against splashing can impinge, for a purpose to be subsequently ex liquids. plained. The con?guration of the insert is dif Fig. 7 illustrates a further embodiment of the invention, in which the top is rounded similar to the Fig. 3 modi?cation and for the same purpose. The container end 3' of the insert 3_ is consider ably above the container end I’ of the body I of the stopper; and such body is provided with a flared recess 9 adjacent the container end of the insert. As a result, ample drainage is provided to 15 ferent from that of aperture 2, by being provided with ?utes or grooves 4 in the outside thereof, which, when the insert is placed in the body of the stopper, form a plurality of vent ori?ces 6 between the insert‘ and the body I. vIt is desir 20 able that these grooves 4 be comparatively nar row and deep; so that when the soft material of the body I is compressed as the stopper is in preclude the plugging action previously referred serted into the mouth of a container, such mate rial will not enter, and thereby close the vent 25 ori?ces. Since the container end 3' of the insert pro jects beyond the container end I’ of the body I of the stopper, it extends also beyond the con tainer ends 6’ of ori?ces 6. Hence, plugging of 3.0 the vent ori?ces is avoided, because the container end 3' of the insert, preferably pointed, acts as a means for shielding or protecting the container to. splashing liquid. By the provision of the plu rality of the ori?ces, adequate venting is provided; by providing the grooves 4 in the outer surface of the insert, as is illustrated in Fig. 2, the same effect may be produced by making the insert'tri angular in shape as is illustrated by Fig. 4, or by 45 forming the aperture in the body of the stopper triangular in shape and the insert circular in shape, as shown by Fig. 6. The aperture in the stopper body for the insert, need not be circular in cross section, even if the vent ori?ces are formed by grooves in the outer surface of the in sert, as is illustrated in Fig. 8. It is to be under stood, therefore, that the stopper of my inven tion, may have its vent ori?ces formed as shown in Fig. 2, or in any other of the ways mentioned. It is only necessary that the cross sectional shape of the insert be diiferent from that of the aper ture in the body portion for the insert, and that the insert ?t tightly in such aperure. In the modi?cation illustrated by Figs. 3 and 4, the same reference characters have been ap plied to indicate the parts corresponding to the parts illustrated in Figs. 1 and 2. For certain types of chemicals having high concentration of salts, such as concentrated hypochlorite solutions, back drainage provided for by the recess 1 in Fig. 1, might cause plugging of the vent ori?ces. To overcome this, the top of the stopper adjacent the insert, in the Fig. 3 modi?cation, is formed As a result, any material which might escape through the vent ori?ces, caused primarily by being car ried therethrough due to the evolution of gas, can drain away from the ori?ces to- the'outside 75 of the stopper, thereby minimizing plugging. . ranged with respect to each other as to provide means for protection of the vent ori?ces, against ends 6' of the ori?ces against splashing liquid with a protuberance 8, preferably rounded. r the container end of the stopper body are so ar which can readily drain away before reaching the ori?ces. Inasmuch as the grooves 4 are on the outside of the insert, they may be readily formed therein. A cup or recess 1 is formed in the top of the stopper to allow for back drainage of ma terial carried out by evolving gas and which con on top of the stopper. 40 denses Although the vent ori?ces are preferably formed 50 I The recesses 9, in the modi?cations of Figures 5 and '7, are preferably but not necessarily ?ared. In all embodiments of the invention, it will be observed that the container end of the insert and and at the same time, even should one ori?ce happen to become plugged by virtue of salt residue 35 resulting from evaporation of splashed mate rial, the remaining unplugged ori?ces will pro vide proper venting. I The stopper to which the invention relates is generally employed for sealing containers such 4.0 as large carboys or jugs adapted to hold large quantities of material. Since such containers are always handled upright because of their size and because one usually recognizes from the nature of the container the fact that it contains mate rial of the character related, handlers will not usually turn over the container and there will consequently be no escape of the chemicals through the vent ori?ces. The vent ori?ces are of comparatively small size. Hence, foreign mate 50 rial can enter the container only with difficulty, and the container will be substantially completely sealed. While this invention has been described with reference to containers for sodium hypochlorite 55 solutions, it will of course be understood that it is applicable'to containers for any liquid that re— quires venting and that tends to form an incrus tation or deposit. 60 I claim: 1. A stopper of compressible material having an opening therethrough, an insert ?xed in posi tion in said opening, the contour of said insert being such as to form with the wall of the opening throughout the length of the latter a (it plurality of passages for permanently venting the stopper, said passagesv being unobstructed from the outside of the stopper to the bottle side thereof, the insert being of substantially uniform cross sectional shape throughout its engagement with the stopper and having its bottle end taper ing, said tapering end continuously decreasing in cross section toward the bottle end of the insert, said passages opening into said tapered end, and said tapered end extending below the lowermost 2,132,598 point of engagement of said insert and said stopper. 2. A stopper as de?ned in claim 1, in which the bottle end of the stopper is provided with a skirt portion, ‘the interior face of said skirt form ing a downwardly and outwardly ?aring recess. 3. A stopper as de?ned in claim 1, provided at the top with a protuberance the sides of which 3 tion in said opening, the contour of said insert being such as to form with the wall of the opening throughout the length of the latter, one or more passages for permanently venting the stopper, said passages being unobstructed from the outside CI of the stopper to the bottle side thereof, the insert being of substantially uniform cross sec flare outwardly and downwardly to the circum tional shape throughout its engagement with the stopper and having its bottle end tapering, said upper end of the passages liquid emerging there tapering end continuously decreasing in cross sec tion'toward the bottle end of the insert, said pas sage or passages opening into said tapered end, and said tapered end extending below the lower most point of engagement of said insert and said 10 ference of the stopper to de?ect away from the through. 4. A stopper as de?ned in claim 1, wherein the top of the stopper is provided with recess bounded 15 by sloping sides. 5. A stopper of compressible material having an opening therethrough, an insert ?xed in posi stopper. LARRY J. BARTON.