US1128076A - Friction-top can. - Google Patents

Description

J. c. TALIAPERRO.

FRIGTION TOP GAN.

APPLICATION FILED MAY 4, 1912.

" three radially spaced places, whereby thev form of cover; and Fig. 5 is a similar view top is preferably'rolledior bent downwardly -170 all whom 'it may concern:

' surfaces, whereby the frictional contact be` vided a metal can which consists of the usual .romte. Tarrant u, oir-fnenirmonn, maar: un; assreuon er nessun assidu- MENTS, re eoitrrunirrancau coilrrnumlruc., a comentaron or new' no t: t:

marcaron-'rer can.

' v 'Specification of Letters Patent. Pmgmihwdl www 9 111915-,

Application ledl. May t, '1912, Serial No. 695,20S.

and then outwardly to form a curl, the inner part of which becomes a friction face to aid -in holding the cover on the can top. The cover is formed with an inner substantially vertical friction wall, which coperates with this friction surface on the curl of. the can top, and also with an annulardepression between they inner frictionfwallf, and thev edge ofthe cover, which copera'tes :with the fric- Vtion walls formed by an annular depression in thecantop.l j

Referring more in detail to the drawings,

the can body is represented at l, and is preferably of sheet metal.v At the upper end is t. Be it known that l, JOHN C. TALIAFERRO, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Friction-Top Cans, of which the following is a description, reference being had to the -accompanying drawing, and'to the figures of reference marked thereon.v

' rEhe invention relates to .new and useful improvements in sheetmetal cans, and more especially to what is knowny in the trade as f the friction top can. y i p' An object of the invention is to provide a can of the above type, wherein the cover is held in place on the can' top orl can body by a plurality l oflradiallyg spaced friction secured in any desired way to the metal can body. rThis can to 2 has a part 3, which overhangs the can ody, bent so as to form tween the cover and thel can top is distributed,.a`nd the liability of a leak occurring, due to imperfections in the surface f of the metal or the forming of the cover and ,can top, is reduced to a minimum.

. A furtherl object of the invention 'is to provide a friction top can, which is so constructed that the frictional contact between .thecover and the top may be distributed at substantially vertical friction wall or seat 4, and -a second substantially vertical friction wall or seat 6. `These two walls are connected by the metal 5 of the can top, and said walls are concentric and radially spaced. The can top at its inner edge is rolled or bent' downwardly and thence outwardly to form a curl or bead 7,which in# frictional lock betweenA the cover and the top may be inade more efficient to prevent leakage through said surfaces.

These and other objects will in part be obvious, and will in part be hereinafter more Y fully disclosed..` Theinvention is illustrated in the ac'- companying drawings, in which,--

Figure l is'a central vertical section of a portion of a friction top can embodying my inventiongFig. 2 is an enlarged detail to more clearly illustrate the invention; Fig. 3 is a detail section, showing theparts beforejthe friction cover is forced on the top; Fig. 4 is a similar view showingI a different ing a collapsing of the top when the cover 1s forced by pressure onto the friction seats.

at its inner face.v

The cover 8 has its outer edge bent or folded back, as at 9, to give strength to the Aedge of the cover, whereby said cover may be pried from the top by engaging a tool underneath said bent or reinforced edge. Said cover is formed with an annular depression, which provides, on its outer face, a friction wall 10, which is substantially vertical and which is so positioned as to engage or lock with the friction seat or wall 4 the cover also forms a second substantially vertical friction wall 12, which is so positioned as to engage or lock with the friction seat or wall 6 on the can top. The walls 10 and 12 are connected by a metal part 11 of the cover, which serves to hold said friction walls radially spaced for proper cooperation with the friction walls on the can top. 'Said cover is also formed with a central-depression, which provides a third substantially showing a different form of top. In carrying out the invention, I have procan body, to which is attached in any suitable way an apertured can'top. |This apertured top `is formed with an annular depression, which provides two substantially vertical friction walls. Thejnner. edge of thecreases the strength of the can top,preventl A This curl also forms a third friction contact/ an apertured top 2provided with a flange,

an annular depression, which provides a on the can top. 4Said depressed portion of vertical friction wall 14, which-is so positioned as to frictionally coperate wlth the inner face of the curl or bead 7 of the can top. The friction wall 14 is held spaced from the friction wall 12 by a metal 13 of 4the cover. Between the walls 12 and 14 is an annular depression forming a pocket. 15, in which a gasket or sealing substance ,16 may be placed.

In Fig. 4 of the drawings, I have shown my cover constructed as in Figs. 1 to 3, the central portion of the cover,'however, being curved outwardly, thus forming a central dome in the depressed part of the cover.

In Fig. 5 of the drawings, I have shown a can top formed with a depressed portion 17, which facilitates the insertion of a tool underneath the bent or reinforced edge of the can cover.

From the above description, it will be apparent that I have provided a friction top and cover for a can body which includes three radially spaced vertically arranged friction seats or engaging walls, which cooperate to firmly holdl the cover on the can top and to prevent any possible chance of f leakage'by said engaging walls. The annular depression in the topforms two of the vertical walls, and the curledflange or bead 7 on its inner face forms the third friction wall forthe top, while the central depression in the cover'l forms the inner vertical friction wall 14, which coperates with the frictional wall on the inner face of the bead or iiange 7, and the annular depression in the cover forms the other two vertical friction walls which coperate with the vertical friction walls formed by the annular depressionin the top. Where -a single -friction` wall is used for seating a cover, there are likely to be rough places or inequalities in the surface of the metal, which may form an opening sufficient to cause a leak. Where, however, two friction vwallsare formed, the liability of a leak is greatly reduced, for the reason that any slight inequality or roughness in the surface is less liable. to extend throughout both of the spaced friction seats. When athird wall is formed, which is also radially spaced from the other two walls, this li-ability of leak is reduced to a still further minimum;I Furthermore, where a single friction wall is used, the surfaces-must be constructed so as to engage each other with a great deal of friction, in order to retain the cover on the can top. Where three spaced friction seats are used, as in the present structure, this frictional pressure can be distributed over the three surfaces, and a much tighter joint formed between the cover and-the top, Without the excessive frictional pressure required when a single friction seat is used. Furthermore, it will be noted from the above description and the drawings that the vertical wall 14 extends downwardly to space a point substantially in line with the bottom edges of the walls 10 and 12, and as a result this vertical wall 14 will engage the inner face of the curl or bead 7 substantially at the same time that the walls 10 and 12 frictionally engage the walls 4 and 6 on the can top. Therefore, the three points of ,frictional' contact are brought together substantially at the same time, and even if the cover is only partially seated, these separate contacting faces will be in engagement and an eliicient sealing of the can secured. Furthermore, this substantially simultaneous en'- gagement of the different points of frictional contact causes one w'all lto rein-force the other and prevent any disarrangement of the walls which might otherwise prevent the proper seating of the cover.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A friction top can consisting of a body portion, a top secured thereto and a cover, said cover having a central depressed portion forming a substantially vertical friction wall, and an annular depressed portion between said vertical wall and the edge of the cover, forming two separated substantially- Vertical frictionwalls,'said can top having an annular depression therein forming two substantially vertical friction walls adapted to engage respectively the friction walls of the annular depression in the cover,

tion forming a substantially vertical friction wall, and an annular depressed portion between said vertical wall andthe edge of the cover, forming two separated substan-` tially vertical friction walls, said can top having an annular depression therein, form ing two substantially vertical friction walls adapted to engage respectively the friction walls of the annular depression in the cover, said `top v at its inner edge being curved downwardly and outwardly to form a curl, the inner face of which provides a friction contact adapted to engage with the inner vertical friction surface of the cover, and a sealing` material located in one of said annular depressions.

3. A friction-top can comprising a body, a top-secured thereto, and a cover, said cover having three annular concentric and radially substantially vertical friction Walls, the lower edges of which are located in substantially the same horizontal plane, and saidtop having three frictional contacting faces adapted to frictionally engage respectively and substantially simultaneously the three Walls on the cover.

4. A friction top can comprising a body, a top secured thereto, and a cover, said cover having three annular concentric radially spaced substantially vertical friction Walls, said top yhaving three frctional contact faces adapted to substantially simultaneously frctionally engage respectively the three Walls on the cover.

In testimony whereof, I aiiix my signature, in the presence of two Witnesses.

JOHN C. TALIAFERRO. Witnesses:

C. L. STURTEVANT, A. M. PARKINS.

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