US2009680A - Bail ear for pails - Google Patents

Description

July 30, 1935- c. H. RoLLASoN 2,009,680

Patented July 30, 1935 A UNITED STATES PATENTl FFICE -BAILEAILFOEPAILS steel caminan, Wham,

towlleellng This invention relates broadly to sheet metal pails. and more speciilcally to a-bail ear for such pails.

The primary object of the invention ls to provide a pail embodying bail ears which are attached rigidly to the body without the provision in the latter of apertures for their reception and without the use of solder or other separate attaching devices.

A further object of the invention is to provide a bail attaching ear for pails which is mounted on the pail body in such manner that all possibility of leakage of the contents of the pail at or adjacent to the ear is positively eliminated, and also that no extraneous parts or material are required to maintain the attached relation between the ear and the body.

In describing the invention in detail, reference is herein had to the accompanying drawing, in which- A Figure 1 is a fragmentary side elevation of a pail embodying the invention;

Figure 2 is a section on line 2 2, Fig. 1;

Figures 3 and 4 are sectional views oi' the pail body and of two sets of dies illustrating the two successive steps employed in preparing said body for the reception of an ear;

Figure 5 is asimilar view illustrating a third set of dies positioned in initial ear-attaching position;

Figureisasimilarviewshowingsaidthird set of dies in final ear-attaching position.

Referring to said drawing, l designates the body'of a sheet metal pail, and 2 a bail of usual form designedto be attached to said body through theintermediacyof oppositely disposed ears, as hereinafter set forth. The bail ear, indicated generally by the reference numeral l, is formed of sheet metal which, for reasons which will hereinafter be made apparent, is preferably of heavier gauge than that of which said pail body is formed.

The ear 3, as initially formed for attaching to the pail body, is of substantially bell shape, comprising a shallow concave, or cup-like, body having a circumferential outwardly flared skirt 4, as shown in Fig. 5. Said initially formed ear is designed to be seated in a socket-like cavity provided therefor and preferably Pressed inwardly in the pail body, following which it and the pail body are simultaneously subjected to the action of companion dies or die members whereby the ilared skirt I thereof is flattened out into annular flange form or caused to assume a position at arightangletotheearbody,and,inso assumingrits ilattened form, said ilange expands the cavity-forming walls by which it is encircled and disposes itselfwithin the close embrace of a circumferential fold which preferably lies inwardly of and substantially parallel to the body wall of the pail, as also in more or less cloly seated l relation to the interior wall of said pail, as shown in Fiss. 2 and 8.

To prepare the pail body I 'for the application thereto of the bail ear, upper and lower die members t and 'l are provided, the former having 10 thereon a projecting. knob l of approximately semi-spherical form and the latter having therein a seat or socket 9 of corrponding form. asshown in Fig. 3. Said die members are employed for forming in the pail body at each of two ap- 15 propriately located diametrically opposite points an inwardly indented or concave portion Il, such formation of the concave portion l0 constituting the ilrst operation. Following this rst operation, the metal of said body at and adjacent to said 20 concave portion is subjected to a second pressing, or drawing, operation in which are employed Vupper and lower die members Il and I2, the former having on its face a short and substantially cylindrical projecting portion Il and having formed 25 in its said face in encircling relation to the base of said portion Il a shallow groove or channel I4. The face of the lower die member l2 is provided with a shallow cylindrical socket I l substantlally corresponding in form and size to the o portion I3 of the upper die Il, and formed on said face in encircling relation to said socket I5 is a projecting circular rib li which substantially corresponds in shape and size with the ,channel Il of the upper die. In the second operation above referred to, the form of the socket S and the adjacent marginal portion of the wall I are altered to the extent that there is formed a shallow inwardly directed cylindrical depression I1 having a substantially flat bottom and defined o at its open end by an outwardly pressed circular ribor bead I8,asshowninFig. 4.

The interior diameter of the depression I1 corresponds substantially with that of the outer edge of the skirt 4 of the ear 3, which latter is adapted 45 to be seated in said deprsion, as shown in Fig.

5, preliminary to subjecting the above-described parts of the structm'e to the action of upper and lower die members t9 and 20. Said upper die member has formed in its face a socket 2| adapt- 50 ed to conformably receive therein the body of the preliminarily shaped ear 3, the depth of said A socket being such that, when the die member assumes the position shown in Fig. 5, the angle formed between the substantially flat face and the socket 2| of said die member engages the ear approximately at the line of junction between the ear body and the skirt. The face of the lower die member 2l, herein shown as fiat, has the metal constituting the flat bottom of the depression I'l resting thereon as it is approached by the descending upper die member |I,asshowninsaidFig.5. Assaidearbodyis depressed by the said descending die member, the flared skirt I of said ear is gradually thrust outward until, in the fully seated position of said die members, it assumes a flattened position at a right angle to the axis of said ear body, forming aange-N, asshowninFig. 6. As itisthus thrust outward, the metal forming said flange 22 gradually forces in advance thereof the cylindrical depression-defining wall of the pail body and utilizes a portion of the metal of the rib Il, as also the increased tendency of the metal embodied in said rib to bend by reason of its curved bead formation. At the limit of the descending stroke of the die member I9, the iiange 22 has its opposite surfaces closely embraced by the inner and outer members of the fold 5, which latter is preferably seated against 'the adjacent ear-encircling wall of the pail body, as shown in Fig. 6. Moreover, the cooperating die members act at the limit of the ear-attaching reciprocation of the upper of said members to completely return the remainder, or any unutilized, portion of said rib I8 to the plane of the body wall of the pail.

Manifestly, due to the relatively heavy gauge of the metal of which the ear 3 is formed, the formation of the fold i as the skirt l is flattened into fiange form is readily effected.

It is to be noted that the herein described shaping of the pail body preliminary to applying the ear thereto requires but two simple pressing operations, and also thatthe act of applying the ear is accomplished in a single operation. lloreover, as is apparent, the ear as herein set forth is so rigidly and permanently attached as to resist practically any ordinary force tending to detach it, applied in any direction, since the ear issecuredtothepaiiwailthroughonttheentire circumference of the ear.

What is claimed isi. In combination, a sheet metal pail body and a bail ear therefor having a rim portion for cooperationwiththepailbody,thepailbodyhav ing an inward fold and an inwardly directed ear holding portion connected with said fold and having an integral base extending thereacross, said'base being nat throughout, and maintained under tension, said rim portion of the ear being disposed in said ear holding portion.

2. Incombinatiomasheetmetalpailbodyand a bail ear therefor having a rim portion for cooperation withthepailbodyandagenerally outwardly extending body portion, the pail body having an inward fold and an inwardly directed ear holding portion connected with said fold and having an integral base extending thereacross which is maintained under. tension with respect to said fold, said rim portion of the ear being disposed in said ear holding portion.

3. In combination, a sheet metal pail body and a bail ear therefor having a rim portion and a generally outwardly extending body portion, the pail body being imperforate and having an inwardly drawn ear holding portion, said rim portion of the ear being disposed in said ear holding portion, the material of said pail body within said ear holding portion opposite the bail ear beingdisposedinitsentiretyatleastasremote fromtheaxisofthepailbodvastheinnerpart of said ear holding portion which is in engagement with the ear.

CHARLES H. ROILABON.

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