US2692709A - Combination closure device and pouring spout for containers - Google Patents

Description

26, 1954 ALDO PEDRO TESTA 2,692,709

COMBINATION CLOSURE DEVICE AND POURING SPOUT FOR CONTAINERS Filed June 25, 1949 @&

INVENTOR. #41 0 P7a 721579 Patented Oct. 26, 1954 COBIBINATION CLOSURE DEVICE AND POURIN G SPOUT FOR CONTAINERS Aldo Pedro Testa, Sao Paulo, Brazil, assignor to Produtos Quimicos Guarani S/A., Sao Paulo,

Brazil Application June 25, 1949, Serial No. 101,420 Claims priority, application Brazil January 6, 1949 1 Claim. 1

Cans for containing liquids to be used a little at a time, such as those for insecticides, lubrieating oils and other such products, are generally provided with a cylindrical spout which acts as a support for a threaded capsule or cap. The liquid can be poured through this cylindrical spout, after the top has been perforated, as such parts are in the form of small cups With a thread spun on the cylindrical wall, with the edge soldered to the can and the bottom turned outwards, that is, in the direction of the cap. The respective part is fitted to the can before the latter is filled, the liquid being introduced through a hole afterwards closed by means of a metal stopper which, in nearly all cases, is soldered in place. It is rare to find cans with the stopper closed by pressure on special machines. In general it can be said that all cans of this type have two separate parts, namely, the outlet spout, with threaded cap, and the closing cap, these parts being fitted separately, that is, first the spout, before the container is filled at the time the container is manufactured, and then the threaded cap, after filling has been effected.

The device embodying the invention functions as a support for a removable cap as well as a pouring spout. The whole device is fitted on the container by means of pressure.

In the drawing:

Fig. 1 is a side-elevational view of an ordinary container;

Fig. 2 is a top plan view thereof;

Figs. 3 and 4 are sectional views thereof;

Fig. 5 is an enlarged, fragmentary, side-ele- V vational view of the device embodying the invention as applied to a container;

Fig. 6 shows the device embodying the invention as applied to a container; on the right in side elevation with cap removed; on the left in vertical cross-section;

Fig. 7 is a vertical, sectional view of the device in one position;

Fig. 8 is a vertical, sectional view thereof in another position;

Fig. 9 is a top plan view thereof showing radial expanders applied thereto; and

Figs. 10 and 11 show the device embodying the invention in phantom as applied to two different types of containers.

Referring to the drawings and especially to Figs. 1 through 4, it must be stated that in some cans, the two parts of the can correspond to separate phases of manufacture, that is, making, and sealing, in the same part of the container, that is, the stopper or seal, in the central upperpart of the spout. These two separate types are shown, for purposes of comparison, in Figs. 1 to 4 of the attached drawings, wherein Fig. 1 shows an ordinary can 12 seen in elevation, with the threaded cap appearing above the edge. Fig. 2 shows the same can from above, it being seen to have, in addition to the high threaded cap I3, a soldered closure [4 over the opening through which the liquid was introduced. Fig. 3 (a schematic section of the worked parts of the lid of the con tainer) shows the cup l5 with its bottom part I 6 turned upwards, the edge being soldered to a certain area of the lid ll. It also shows the closure i4 likewise soldered to another part of the lid. The cylindrical wall of the cup i5 is provided with protruding threads, spun onto it, down to the base of the capsule or closure l3. Fig. 4 shows the type of closure in which the cup l5 has the filling orifice in its bottom part, which is sealed by the closure M, soldered in the part [8 of the bottom It, while the cup itself is affixed to the can in the mouth of an opening, at the soldered area ll. Even when the closure 14 is put in place by means of a special machine (some cans being thus finished), the preliminary operation of soldering the cup i5 is still required. Bearing in mind the fact that this latter operation is not performed on a machine, at a rapid rate, but merely done piece by piece, with known heating means, it can readily be understood that this makes the manufacture of containers more costly and delayed, and that substantial production becomes irregular due to the need for relying upon the efforts of numerous workmen.

Referring now in particular to Figs. 5 and 6, the sealing device is fitted by means of a simple and practical apparatus. The purpose of the sealing device is to function as a support for a removable cap, as well as a pouring spout, the whole costing less than the old type of plain cup fixed by solder.

The external appearance of cans provided with the new sealing device, when covered by the removable cap, is no different from that of cans with a sealed opening at the top of the threaded cup. As is seen in Fig. 5, all that can be seen above the top of the can I2, is a support or cup 19 and a threaded cap it. When the latter cap I3 is removed, it can be seen that the support or cup [9 for the cap i3 is an opentopped cylindrical member, with a thread 20 extending into the wall, and which is held near its bottom 2| within a collar 22, which protrudes from the edge of the can filling aperture. It

is emphasized that the present invention provides a unitary cylindrical cup member adapted to be made from a single blank of suitable material and which serves not only as a support for cap i3 but also as a pouring spout.

Fig. 6 shows, the new device fixed to the can, one side of" said figure showing a side view of same, with cap removed, while the other side is a vertical cross-section of same. The device is aflixed by spinning a part of the wall l9, at the level of the bottom 2|. The device which can be seen from Fig. 7, has a shoulder 23 in the wall, said shoulder preventing the device from penetrating any further into the aperture of the container. The collar 22 formed on the edge of the filling aperture, may be trained doyvn into the interior of the can and spun there simultaneously with part of the cylindrical support l9. For example, in Figs. '7, 8, 10 and 11, the spun partof the support I9 is flared below the level of the conical opening 22 of the can. Depending merely on the type of can and the strength of the plate used, the collar can be higher or lower, the opening be situated either in an area at the bottom of a shoulder (as in Fig. 10), or at the topoi a conical part (as in Fig 11). In any case, after the container has been filled with liquid, the inner surface of the support I9 is expanded by means of radial expanders 24 and 25, having at least two rollers or stretching surpurpose not only as a definite stopper but also. as. a support for the threaded cap and asa spent to make the process of pouring the liquid from the can. into some other recipient, more convenient.

Having now described the invention, what is 4 claimed as new and desired to be secured by Letters Patent, is:

In a container including a top wall provided with a discharge aperture; an upstanding frustroconical collar with a downwardly diverging inner surface defining said discharge aperture, a unitary closure cap and pouring spout consisting of an upwardly opening cup-shaped body formed from a single blank of material, said cup-shaped body having a substantially cylindrical side wall projecting upwardly from said collar and having further a bottom wall traversing said discharge aperture, an annular shoulder provided on said body adjacent and spaced from said bottom wall and resting on and engaging said collar to thereby limit the downward displacement of said body relative to said top wall, the portion of said side wall disposed intermediate said shoulder and said bottom wall being received below the inner surface of said collar and conformed to the latter to. thereby retain said body on. said collar and to-provide a hermetic. seal between said container and said body, and thread means on the outer surface of said side. wall of said body upwardly from said shoulder and adapted to threadedly en gage a complementary closure, element over said body.

References Cited in, the file of this patentv UNITED STATES PATENTS Number Name Date 785,177 French patent May 13,, 1935- 1,189,294 Ruggles July 4, 191.6. 1,575,154, Drakev Mar. 2, 19-26- 1,972,5,43 Thompson et al. Nov. 10,,1936 2,196,426. QBrien Apr. 9,, 1940 2,367,300 et al Jan. 16;, 1945 FOREIGN PATENTS Number Country Date 291,187 Great; Britain May 31, 1928 7511,9585 France July 3, 1 933-

Images