US 1773513 A
Description (OCR text may contain errors)
Aug. 19, 1930. HS. BRADY 1,773,513
CLOSURE FOR RECEP'IACLES Filed Sept. 50. 1927 Patented Aug. 19, 1930 UNITED STATES PATENT OFFICE I HUGH S. vBRADY, OF WHEELING,= WEST VIRGINIA, ASSIGNOR TO HAZEL-ATLAS GLASS GO., OF WHEELING, WEST VIRGINIA, A CORPQRATION OF WEST VIRGINIA CLOSURE FOR RECEPTACLES Application filed September so, 1927. Serial No. 222,990.
The present invention relates to closures for bottles, jars and similar receptacles and has special reference to the sealing of such receptacles after they have been vacuumized; although in its broader aspect the invention is also adapted to the closing and sealing of receptacles irrespective of whether or not they have been previously vacuumized.
One of the objects of the invention resides in combining with a closure of the general type shown in my Patent No. 1,544,553, a composition gasket or seal for the top of the container being scaled.
A further object of the invention consists in co'n'ibining with such a closure a plastic seal for both the top and inner side of the mouth of the container to besealed.
Another object of the invention resides in so constructingthe closure that it will serve as a means to retain the sealing ring in position thereon.
A still further object of the invention is the formation of a cap or closure which will so confine thesealing material as to prevent its escape when pressure, either atmospheric or otherwise, is applied to the closure, and' which will also present a neat and attractive package in that it will effectually conceal the sealing material without overlapping the side walls of the receptacle Other objects and advantages of the invention will be apparent from the following description when taken in connection with the accompanying drawing; in which Figure l is a fragmentary side elevation of a jar having combined therewith the improved closure and seal.
Figure 2 is a plan view of the cap or closure.
2. This closure while intended more particularly for use in the vacuum sealing of receptacles is also well adapted to use in the sealing of receptacles without exhausting the air therefrom.
The closure 2 is provided with a domeshaped central portion 3 from the edge of which rises an outwardly inclinedwall 4 ter minating in a horizontal flange 5. Y
In the form of the invention shown in Figure 3 a sealing ring 6 of plastic composition material is provided and is disposed on the under side of the flange 5 and the outer side of the wall 4. This ring is retained in position partly by means of a head or projection 7 which is bent down from the outer edge of the flange 5 so as to encompass the outer edge of the sealing ring and to engage over a portion of its under surface. Such a construction serves a three-fold purpose,namely, to assist in retaining the sealing ring in its proper position on the closure,'to prevent the lateral escape of the plastic material of which the ring is formed when pressure is applied in sealing the receptacle, and to present a neat and attractive package the plastic material from View; I
The horizontal portion of the ring 6 is, of course, adapted to seat upon the upper edge of the receptacle to be sealed and the downwardly extending portion which is in engagement with the inclmed wall 4 is, adapted to be compressed against the inner wall of the mouth of the receptacle by reason of the outward expansion of this wall as the dome 3 is more or less collapsed by atmospheric pressure. This action of the dome 3 in compressing the sealing material. against the innor wall of the receptacle is quite similar to the action described in my atent heretofore referred to in which a rub er gasket is employed as the sealing medium, and a detailed description of this operation is believed to be unnecessary.
In the form of the invention shown in Figure 4 the plastic sealin ring 8 is identical with the mag 6 except t at the vertical portion thereof is' omitted so that the asket serves as a top seal only. The bead performs the several functions heretofore vdeby concealing scribed in connection with the disclosure of Figure 3, i. e., it retains the sealing material in position on the under side of the flange 4'), prevents the lateral escape of the material as pressure is applied to the closure, and serves to conceal the sealing material in the finished package.
In the operation of both forms of the mvention, the sealing material is applied to the closure as indicated in Figures 3 and 4 and is retained in position thereon partly by means of the head or crimped portion 7. The closure, with either type of gasket, is placed upon the receptacle to be sealed, and the receptacle is then vacuumized and the closure forced into position: any desired form of vacuumizer or sealer being employed for this sealing operation. In the form shown in Figure 3, atmospheric pressure on the dome 3 will force the wall 4 outwardly, thereby assisting in the maintenance of an effective seal. As pressure is applied to the closure the flange 5 will, of course, force the horizontal portion of thegasket, in either form of the invention, into sealing contact with the upper edge of the receptacle. and any tendency of the sealing material to escape from under the flange 5 is prevented by means of the head 7 which acts as a barrier to such a movement.
From the foregoing description taken in connection with the accompanying drawing the utility and efficiency of the embodiments of the invention shown herein will be apparent. and it will also be observed that the bead 7 which retains the sealing material in position on the closure not only insures against the escape of this material from the point of scaling contact but also greatly enhances the appearance of the completed package, due to the fact that the sealing material is concealed without the necessity of extending the closure down along the sides of the receptacle and thus breaking the continuity thereof.
While I have described what I now believe to be the preferred embodiments of the invention it is to be understood that various changes may be made in the details of construction without departing from the essentials of the invention; and all such changes and modifications are intended to be included within the scope of the appended claims.
Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:
1. The combination with a glass receptacle of a cover therefor, said cover including a substantially vertical wall disposed within the mouth of the receptacle adjacent its inner wall, a horizontal flange, a composition sealing ring of plastic material disposed between the flange and the mouth of the receptacle, andmeans on the outer edge of .the flange vto prevent the escape of the sealing material.
' tween the flange and the mouth of the receptacle, and a flange on the outer edge of said first-mentioned flange to prevent the escape of the sealing material.
3. The combination with a glass receptacle, of a cover therefor, said cover including a central portion, an upwardly inclined wall about the periphery of said central portion and disposed adjacent the inner Wall of the mouth of the receptacle, a flan e extending laterally from the upper edge 0 the inclined wall, a sealing ring of plastic material disposed beneath said flange, and a downturned annular projection on the outer edge of said flange for engaging said ring.
4. The combination with a glass receptacle, of a cover therefor, said cover including a central portion, an upwardly inclined wall about the periphery of said central portion and disposed adjacent the inner wall of the mouth of the receptacle, a flange extending laterally from the upper edge of the inclined wall, a sealing ring of plastic material disposed beneath said flange, and a downwardly and inwardly turned annular projection for 9 engaging the outer edge of sai rin HUGH s. BfiADY.