US1084451A

US1084451A - Friction-top can.

Info

Publication number: US1084451A
Application number: US71812512A
Authority: US
Inventors: Louis Charles Krummel
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-08-31
Filing date: 1912-08-31
Publication date: 1914-01-13
Anticipated expiration: 1931-01-13

Description

L G. 'KRUM'MEL. 'FRIGTION To? CAN.

APPLIOATION FILED AUG. 31 1912.

Allorneys' Patented Jan. 13, 1914.

IIIIIIIIIIII Q a M 1 3 no 1 r To all whom it may concern:

LoUIs'orrARrEs 'KRU M L, or CLINTON, oonnne rrenr.

Be: it known that 1, Louis C. KnUMiin a citizen of. the United States, residing at Clinton, in the county of Middlesex, State of Connecticut, have invented certain new and useful Improvements in Friction-Top Cans, of which the following is a description, reference being had to the accompanyingdrawing and 'to thefigures of reference marked thereon. I

The invention relates to new and useful improvements in sheet metal 'cans, and more especially to what is known in the tradeas friction top cans.

1 An object of the invention is to provide a can ofthe above type wherein the cover is held in place on the can top partly by friction and partly by bending the cover fiange'dnringthe seating of the cover. I

A further object of the invention is to provide a can of the above type wherein the cover is held in place by a verticalfriction wall on the cover engaging a friction wall on the can top, and wherein said cover is also formed-with an outer downwardly projecting flange which is gripped by friction seating walls formed in the can top, which walls are so spaced as to bend the cover flange to aid in holding the cover seated.

These and other objects will in part be obvious and will in part be hereinafter more fully disclosed. y

In the drawings, which show by way of illustration the invention, Figure 1 is aside View of a friction top can, partly in vertical section, having my improvements applied thereto; Fig. 2 is an enlarged detail showing in vertical section a portion of the cover,

thecan top, and a portion of the body of the can, the cover being seated'on the can top Fig. 3 is a new similar toF g. 2, showing the coverbefore it is forced onto the can top. Fig.4; isa View similar to Fig. 2,

showing a modified form of' the-invention. Fig. 5 is a S1m1l3IfV18W Sh0W1I1g afurther Y modification,

In carrying "out my invention I hav sproride'd a metal can which cons sts ofv the usual-"ca n. body, towhich s, attached an aper:

hired t n OP- h apes u dcan top :is; formed with a curled, or,,rolled pgnt on at;

' its inner edge, which forms-ani ner seat for the cover" and alSQfiPMBS seatingwalls which are located-hen... inner friction se t and the onter edge'ofthe cantop}. The .co'veriisi-formediwithra vltl-l Specification of LettersPateiit. j Application filed August 31,1912. Serial No. 7 1s,125. i

. 'rnrcrroiv-j'roificanf- Patented an. 13, 1914.

-- cal friction wall adapted to engage the inner'friction wall'on the can top, andalso a downwardly projecting-flange adapted to be gripped by the 'spaced'friction seating walls on the can top. Thesev spaced seating walls are curved so as to. give a slight bend to the flangeon the cover when saidcover is forced onto the can top for closing the can.

Referring more in'detail to the drawing, my improved friction top. can consists of a can body 1, onwhich is mounted at the. up-

per edge a can top 2. This can top may beformed with an outer flange which is soldered to the can body, or with a flange which is rolled intoa double seam with a corresponding flange on the can body. Either form of securing the can top to the can body may be used, or other methods may be employed. The particular manner of securing the can top to the body of the can has nothing'to do with my invention. This can top is formed with a circular aperture. Said can top is also formed with a downwardly projecting vertical wall 3-, which is provided with a curl or roll 4 at its lower edge. This curl,-as shown in the drawings,'is preferably an open or loose curlwhich forms a pocket in which may be placed a plastic sealing substance 5, if desired. The curling of the loweredge forms an annular seating wall 6. 'The edge is further curled so as to form a second curved friction wall 7, which is spaced from the curved friction wall 8 formed on the inner. face of the flange 3 at the point where the curled edge of the flange begins. The cover 9 is formed witha circular depression which provides a vertical friction wall 10. This verticalfriction wall 10 is adapted to engage the inner annular friction seat 6 on the :can top. The outer edge of the cover is bent backward asat 11 t0 form-a prying olf rib, and thence downward to form 2. depending flange 12. This depending flange 12 is so'proporti oned that theouter face thereof engages the inner face "of the flange 3, and the lower edge of the the spaced

friction walls

7 and 8,1it' willfbe firmly gripped thereby. At.'the.tin e, .o r before said flange 12 is-g'ripped by the s friction walls 7 -and 8," the; vertical fr ction need,

' walllO on the cover is reinforced, or-held in place by the material of the coverat the bottom of the depression in the cover. That ,is to say, the vertical Wall at one side of the cover, through the connecting metal, re

inforces and braces the'vertical wall'10 at the other side of the cover. Therefore. the yertical wall 10. is practically unyielding As this wall is forcedinto the apertured top, the curled or rolled edge of the top will be firmly'held in place, and any tendency on the part of the flange 1.2.to unroll the curl or unduly separate the

walls

7 and 8 will be prevented by this backing up, or reinforcing the curl-ed edge by the friction'wall 10 on the cover. Therefore, when the cover is seated in the can top, the flange 12 will be firmly, grippedby' the

friction walls

7 and 8, and the friction walls 6 and-1O forming the inner friction seat for the cover will further assist in holding the cover seated. In order to further. aid in holding the cover on the can body portioned thatthe flange 12 will be carried down between the friction walls 7 and '8 along the curved portions thereof, to a certain extent. These curved walls forming the

friction seats

7 and 8,:will bend the extreme outer edge of the flange 12, and this bending of the flange surface is afurther and an ad ditional lock for holding the cover. seated. lVhen the curled portion of the can top is provided with a sealing material, the flange 12 will engage said sealing material and substantially .embed therein, which will form an effectual seal at the points of contact between the flange 12 and the

friction walls

7 and 8. It is obvious that from certairraspeots of the invention, this'sealing material may be omitted. Furthermore, it will be apparent that in my improved friction top I have a point of sealing where the friction wall 10 on the cover engages the friction seat 6 on the curled part of the can top. I also have two additional points of sealing where the flange 12 engages respectively the

walls

7 and 8.

It will be obvious that when my improved can is used for packing materials containing gummy substances, that said substance will lodge at some one of the three sealing points and thus aid in the efficient closing or sealing of the can.

The can top is wall of the can body so as to form a recess 13. The outer edge of the cover, when seated, overhangs. said recess and the coveris preferably .so proportioned that the extreme outer face ofthe cover, when seated, 1s flush with the outer edge of the can. By this proportioning of the parts the can cover can be forced into its seat and the edge of the can body will serveas a limiting means to .edgeof the flange of the cover. therefore, be understood that I donot limit the parts are so pro-.

depressed adjacent the be inserted underneath the flange on cover.

for prying the sameoff from the can body. \Vhile I have described the parts as so proportioned as to bend the flange of thecover to assist in locking the cover to the canbody, it will be obvious that from certain aspects of the invention the flange 0n the cover may be shortened so as to be firmly gripped by the spaced

friction walls

7 and 8 without any resulting bend in the extreme It will myself to a construction wherein a flange is necessarily bent during the seating of the cover. It is also to be noted that'while the lower edge oI'the flange 12 is frictionally clampedbetween the friction walls/7 and 8,

-' the vertical walls of'the flange 12 also frictionally engage the vertical portion of the flange 3,-s0 that, in effect, I have at this part.

of the' cover a vertical friction seating surface, which terminates in tliespaced friction seating surfaces 7vand S.

In Fig. 4, I have shown a slightly modified form of construction, in that the cover is not providedwith a circular depressed portion. The construction in this figure is otherwise in all respects the same as that shog'ign and described in connection with Figs. 1 to 3. Inthis modified construction the cover is .held on the can top solely through a frictional engagement of the vertical wall on the flange 12 with the frictional wall on the face of the flange 3, and the gripping friction between the walls 7 and S as they engage the. lower edge of the flange 12. As to the construction shown in this figure, the flange may also be sufficiently long so that when the cover is seated, it, will be slightly bent by the curved surfaces forming the

friction walls

7 and 8, as clearly shown in the drawings, or said wall maybe terminated so that the lower edge thereof will be frictionally gripped by the '

walls

7 and 8 without any bending of the flange.

In Fig. 5 I have-shown the central depression as carried down farther so that the friction wall 10 engages'the friction wall 6 before the projecting flange 12 is gripped by the

friction walls

7 and 8. In this figure the cover.- is also cupped centrally,

It is obvious that minor changes in the details of construction and the arrangement of parts may be made without departing from the spirit of the invention, as set forth in theappended claims.

at its lower edge inwardly, upwardly and backwardly toward itself to form spaced curved friction walls, and a cover having a downwardly projecting vertical flange adapted to have extended vertical frictional engagement between its outer wall and the flange on the can top and adapted to have the lower free edge thereof seated between and engaging the spaced'friction walls on the'can top.

2; -A friction top can comprising an apertured top having a vertical flange curled at its lower edge inwardly, upwardly and backwardly toward its-elf to form spaced curved friction walls, a cover having a downwardly projecting vertical flange adapted to have extended vertical frictional engagement between its outer wall and the flange on the can top and adapted to have the lower free edge thereof seated between and engaging the spaced fr rtltai walls on the can top, and a sealing material in said curled edge of the can top in which the downwardly projecting flange of the cover may be seated.

3. A friction top can coinprisingan apertured top having a vertical flange curledat its lower edge inwardly, upwardly and backwardly toward itself to form spaced curved friction walls, a cover having a downwardly projecting vertical flange adapted to have extended verticalfrictional engagement between its outer wall ,and the flange on the can top and adapted to have the lower free edge thereof seated between and engaging the spaced friction walls on the can top; and a sealing material in said curled edge of the can top in which the downwardly projecting flange of the cover may be seated, said cover having at the upper portion of. the flange an outwardly projecting prying off r1b. y

4:; A friction top can comprising an apertured top, having a-vertical flange, curled at its lower edge to form'spaced curved friction walls and a cover having a single downfree edge adapted to seat between said walls and frictionally engage each wall, said cover also having a circular depression forming a vertical friction wall, adapted to engage the inner face of said curled edge the engaging and gripping surfaces between the vertical walls and the curled edge being arranged in substantially a horizontal line.

5. -A friction top can comprising an apertured top, having a vertical flange. curled at wardly projecting flange having its lower its loweredge to form spaced curved frictioii walls and a cover having a downwardly pro ecting flange adapted to seat between said walls and frictionally engage each wall,

"said cover also having a circular depression forming. a vertical friction wall, adapted to engage the inner face of said curled edge, said cover flange, when seated, projecting into the curved portions of the spaced. friction walls and partaking of the curvature thereof.

6. A friction top can comprising an apertured top, having a vertical flange, curled at its lower edge to form spaced curved friction walls and a cover having a downwardly projecting flange adapted to seat between said walls and frictionally engage each wall, said cover also having a circular depression forming a vertical friction wall, adapted to engage the inner face of said curled edge, said cover flange, when seated, projecting into the curved portions of the spaced friction walls and partaking of the curvature thereof, said curled portion of the can top having a plastic sealing material therein. in which the flange of the cover is adapted to be embedded.

In testimony whereof, I allix my signature, in the presence oftwo witnesses.

LOUIS CHARLES KRUMMEL.

Witnesses: r

CHAs. A. 'Posr,

S. BURDETTE REED.