US277920A - Can and process of making the same - Google Patents

Description

(No Model.)

RNORTGN. CAN AND PRUGESS 0F MAKING THE SAME.

Patented May 22, 1883.

f No. 277,920.

Messes:

l 4 l 4 Il.

N. PETERS. MDM WIM on. ILC.

' UNITED STATES IjATnNT OFFICE.

EDWIN NORTON, OF -EGHIOAGQ ILLINOIS.

CAN AND PROCESS MAKING THE SAME.

' SPECIFICATION forming part of Lettersfatent No. 277,920,dated May 22, 1883,

A Application tiled December 7, 1882. (No modelf)` v vide a cheap, simple, and expeditious mode of lo manufacturing open-mouthed round cans or packages, suoli as are used for bakingpowder and other similar materials".

Heretofore it has been customary to secure the bottom on these cans by a crimped seam x but by this method the parts are not united so firmly but that, at least in the better class of these packages, it is also found necessary or desirable to solder them, which of course adds materially to thelabor and expense.

By the present invention I am enabled to producein a very simple and expeditious method-that is to say, by simply compressing the can bottoni and body between two dies or `stamps-a very strong and'eflicient can with- I z 5 out the use ot solder or the comparatively slow and expensive method of double-seaming; and

i bereit may be remarked that the stock it is desirable, on account of cheapness, to employ in these cans er packages is of the inferior quality and not suitable to be subjected to the action of double-seeming rollers; and my improved can, formed in this way, consists of a can-body havin gan inturned flange at its end,

interlocked between folds in the flange of the can bottom or cover, the lower edge of the flange on the can bottom or cover being forced out against the interior wall of the can-body,

so as to brace against it, and the remaining portion of said iiange being folded outwardly 4Q upon itself anddown upon the flange of the can-body.

In manufacturing the cans a suitable die,

press, or stamp is inserted inside the can-body,

which is provided with the inturned lian ge, and

4 5 the can bottom or cover, having the ordinary straight or right-angle ilange, is placed on the inside die, inside the lian ge on the canbody, and

' pressed down by another suitable plate or die,

which forces theiiange of the can-cover against 5o the insidedie andoutagainstthe vertical wallof the can-body, forming the interior fold, and

,dies or stamps toward each other. latter figures especially the thickness of the stock and size of the folds are exaggerated and then the continuance of the-pressure forms the exterior folds in the can-cover i'iange outside the can-body.

My invention will be more fully understood In the drawings, Figure l represents a cen-K t-ral longitudinal sectional view of a can embodying my invention.

similar views, showing successive stages in the Figs. 2, 3, and 4 are seam as it is formed bysimply forcing the two In these somewhat out of proportion, to make the same appear more clearly.

In the drawings, A is the can-body, (represented in heavy black lines in Figs. 2, 3, and 4.) Itis provided with an inturned iiange, a, at its end. l

B is the can bottom or end. lts flange b is folded over the flange a, one thickness or fold inside vand two outside the same.

O represents the inside die, which ftsinside the can-body, and is provided with a curved shoulder or offset, c, which guides and turns the edge of the ilange b outward under the flange a when pressure is applied to the can end B, thus forming the first fold, as shown in Fig. 3.

D is the outside die or stamp. It may be provided with a flange or collar, d, to tit over the end of the can-body to hold it rigid and prevent its giving when the liange b is forced out against it; or other suitable means may be employed for the purpose. Either one or both of the dies O and D may be made movable, so as to press the can end and body between the dies and form the seam uniting the two together. i

c and d are respectively circular depressions and projections in the dies C and D to form a bead, b', in the can end VB as the dies are pressed together. In this way, it will be observed, by a simple and single motion of the dies the seam is formed, uniting the can end to the body in a firm .and secure manner, so that the cans may not only be produced very rapidly and cheaply, but the seam itself will IOO be so close and strong that there will be no necessity for soldering it.

The can end B is shown in Fig.2 in position ready to be applied to the can-body by pressing the dies together. It is slightly snlallerin diameter than the can-body. In Fig. 3 its form and position are shown after the dies are partially pressed together so as to force the flange b out against the wall of the can-body A under the flange a.. After the flange b strikes the wall of the eau-body, as shown in Fig. 3, the motion of'the dies, continuing, folds the remaining part of the flange b down upon the flange a on the outsideof the can, as shown in Fig. 4, and as the dies are forced together the folds of the seam are pressed down close upon each other, forming a tight joint. The can formed in lthis way is rendered very strong by reason of the seam heilig composed of four thicknesses ofthe stock pressed and interlocked together.

E is the slip-cover f'or closing the mouth of the can.

This invention is applicable to round cansthat is to say, to cans circular or oval in cross- Section. t

It will be observedthat in forming the seam in this manner the flange of the can end is first turned and pressed out against the inside wall of the can-body, thus taking up all the slack in the can-body and bracing theflange end or edge firmly against it. The continuance of the pressure then causes the upper part of' the cancover flange to fold down over the inturned flange on the can-body, forming a double-braced interlocked seam between the can cover and body, and uniting the parts together in a very strong and efficient manner. After the edge of the flange b strikes against 'the inside wall of the can-body the continuance of' the pressure will cause the remaining portion ofthe flange b to fold outwardly over the flange a instead of' inwardly, as the stock will naturally bend or fold in the direction which offers the least resistance; butto insure perfect uniformity and accuracy in the operation I construct the die C so that its upper or plain surface projects slightly above the upper or exterior surface of the flange c, as shown ln Figs. 2, 3, and 4., so that the shoulder@ will support the stock on the inside and cause it to fold outwardly over the flange c.

I expressly reserve for future application any invention or improvements which I may be entitled to secure by Letters Patent upon the dies herein shown or apparatus employed in making my improved can.

I claim- 1. The herein-described process of securing ends having a downwardly-turned flange in cans having an inturned flange by a single operation, consisting in turning the flange of the can end out under the flange on the can-body A until its edge strikes the inferior Wall of the can-body, and then, by simply continuing the f'orce, folding the remaining portion oftheflange outwardly over the flange on the can-body and closing it down upon said flange, interlocking it in the folds, substantially as specified.

2. The can-body provided with an inturned flange, a, in combination with a can end having the lower edge of' its flange b turned under the flange a and out against the interior wall of the can-body, so as to brace against it, the

remaining portion of said flange b being folded outwardly upon itself and down upon the flange a., suhstantiallyas specified.

EDWIN NORTON.

Witnesses:

H. M. MUNDAY, T. EVERETT BROWN.

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