US1581680A - Means for making closures for containers - Google Patents

Description

April 20 1926.

C. GUERITEY 4 Sheets-Sheet l MEANS Fon MAKING CLosUREs FOR CONTAINERS Filed Nov. 2"/l 1922 [I mi w. LT

5%/ ATTORNEY 7- p AApril 20 1926.- 1,581,680

c. GUERITEY MEANS FOR MAKING CLOSURES FOR CONTAINERS Filed Nov. 27, 1922 4 sheets-snet 2 n I ENTOR L\ BV//f ATTORNEY April 20, 1926. 1,581,680

c. GUERITEY.

MEANS FOR MAKING CLOSURES FOR CONTAINERS Filed Nov. 27, 1922 4 Sheets-Sheet 3 INVENTQR U1 f 9, laf Que/@Ze L l/z/Zg 9'r BW ATTORNEY I g April 20 1926. 1,581,680

C. GUERITEY MEANS FORMAKING CLOSURES FOR CONTAINERS Filed Nov. 27, 1922 4 Sheets-Sh'et 4 Y INVENTOR /f @may BY/j/ ATTORNEY Q 63m Patented Apr. 20, 1926. .p

UNITED STATES PATENTl OFFICE- cnaRLEs GUERITEY, 0E Passaic, NEW JERSEY, AssIGNoR rro Eassnic METAL WARE co., 0E Passaic, NEW JERSEY, A CORPORATION or NEW JERSEY.

MEANS FOR MAKING CLOSURES FOB CONTAINERS.

plantation mea November a7, 1922. serial No. 603,609. I

11o all whom it may concern.'

Be it known that I, CHARLES GUERITEY, a citizen 'of the United States, and resident of Passaic, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements -in Means for Making Closures for Containers, of which the following is a' specification.

In making containers, such as tin cans, having closures, such as heads and bottoms, that are seamed to the container bodies by suitable seaming mechanism, the closures frequently have marginal grooves to facilitate seaming the closures to the containers by seaming tools. For expeditious work the closures are stacked for rapid application to the containers but the closures are liable to stick to one another and prevent the successive feeding in a manner desired.

The object of In invention is to simplify the manufacture o such closures, and to provide closures with marginal flanges the edges of which are turned inwardly so that when the closures are stacked they will rest upon one another in such a manner as to be readily removed successively from the stack without danger of sticking to one another.

A further object is to enable the sheet metal for the closures to be first stamped to the proper size and reduced to the final form without drawing the metal, whereby danger of fracture of the metal, particularly at rounded corners, is avoided when the metal is being brought to its final shape for the closures.

In carrying out my invention I provide a l sheet of metal of the desired size for a closure and indent its marginal portion to produce a groove, and then I press the metal adjacent' permitting them to be readily separated successively when slid along one another.

My invention also comprises novel details of improvement that will be more fully hereinafter set forth and then pointed out in the claims.

In the acompanying drawings I have illustrated devices whereby my invention may be carried out and wherein.;

Figure l is a sectional view of dies adapted to c ut blanks for the closures and form preliminary grooves at their edges;

Fig. 2 is a detail section of the dies in position to cut the blank to size;

3 is a, detail of a closure formed according to the position of the parts in Fig. 1; b Fig. 4 is a plan View' of lower die memers;

5 is a4 section on line 5, 5 in Fig. 4;

Fig. 6 is an underside view of the upper die member of Fig. 1;

Fig. 7 is a section on line 7, 7, in Fig. 6;

Fig. 8 is a section of the finishing dies; Figs: 9, 9a and 10are sectional details illustrating steps of the dies of Fig. 8;

Fig. 11 is a sectional detail illustrating several complete closures stacked;

Fig. 12 is a similar view illustrating al modified closure;

Fig. 13 is a plan viewv of the lower die members of Fig. 8, and

Fig. 14 is an underside view of the upper die members of Fig. 8.

Similar numerals of reference indicate corresponding parts in the several views.

To form the closure to the size desired and produce the first edge grooving step thereon, a suitable metal sheet or plate 1 is passed between the die members shown in Figs. 1, 2 and 4 to 7. The female die comprises a lower block 2 having a marginal projection ingly shaped recess 4 therearound. The

block may be fastened to a plate 5 by screws 6. The block 2 may be made in two parts, 2f, 2b as indicated in Fig. 1, or may be in a single piece as indicated in Fig. 2. Block 2 may be considered as the female member of the die. The pressing or male member of the die is shown comprising a block 7 having an interior recess 8 providing a cutting and metal folding rim or rojection 9 adapted to enter the recess 4 of) the female member. The cutting edge of block 2 is indicated at 10 at the upper edge of and surrounding the recess 4, whereby the outer edge 9a of the rim portion 9 of the male member may cooperate with the cutting edge 10 to cut the stock or plate 1 to the required size. Within the recess 8 of block 7 is a head or plunger 11 that is movable within said recess and fits snugly within the rim portion 9 of block 7, the lower outer edge of which head or plunger is recessed at 12 and shaped to cooperate with projection 3 to form an initial marginal groove 1l in the closure 1, as illustrated in Figs. 1, 3 and 9. The head or plunger 11 is shown secured to a stem 13 slidable in a bore 14 in block 7, shown passing through a stein 7l on said block, a nut 15 nn stein 13 limiting relative movementof said stem and the head or plunger 11 with respect to block 7.

When the die members described are fitted in a suitable punch press, the stem 7'* being attached to the reciprocative member of said press, a piece of suitable stocker metal plate 1 will be placed in position on die 2 beneath the upper male die when the latter is in the elevated position, and the head or plunger 11 will han Within recessoi' chamber 8, as indicated in Fig. 7, being su ported by nut 15 stopped on stein 7.

en the upper or male die member is advanced to the work, the `head or plunger 11 will rest upon stock 1 (Fig. 2), and the block 7 will advance, whereupon its cutting edge 9" in cooperation with the cuttin edge 10 will cut the stock to shape and imensions, and the rim or projection 9 will continue to advance to bend the metal at lb beneath it, (Fig. 2), along the outer side of the projection or rim 3, in recess 4, and when the solid part of block 7 opposes and bears against t e head or plunger 11 the latter will be forced against the stock 1 to press it into the recess 2 of block 2, the extreme edge of the stock being forced by the rim portion 9 of block 7 againstprojection 3 to produce the marginal groove l, as illustrated in Figs. 1 an 3, whereby the closure is partially formed. S acers 7 b may be interposed between bloc 7 and head 11.

After the closure has been formed with its marginal groove 1, as before described, it is placed between dies illustrated in Figs. 8, 9, 9, 10, 13 and 14. The lower or female die comprises block 16 corresponding in shape to the closure and adapted to have the body portion ofthe partly finished closure placed thereon. Around the block 16 is located a movable die member 17 which fits snugly to and is guided by the block 16, having an outline corresponding to the shape of the closure to be completed. The movable die member 17 is normally held raised to a position substantially flush with the top of block 16 by means of springs 18 shown operative in recessesv in the bottom of member 17 and in plate 19 on which block 16 rests and to which the block is secured by screws 20. A guide 21is free around die member 17, and at one end the guide is reduced at 21 to permit the artially formed closure blanks to be sli to position over the block 16 and member 17.

The guide 21 is normally held eleyated by means of springs 22, bearing'against said 7l screws 27, the inner edge of which mem er 26 is recessed at 26 to engage the extreme edge 1 of the partially formed closure, recess 26* being suitably curved or rounded to turn edge 1 inwardly. Within the recess 24 of the block 25 is a head or plunger 28 ada ted to bear upon the main body portion o the closure blank that rests l upon block 16, (see Fig. 8), within .the grooved portion 1 of the blank. The head or plunger 28 is provided with a stem 29 guided in a bore 30 in stem 23 of die block 23. Said stem 29 is provided with a stop 31, between which stop and the stem 23* a spring 32 is Alocated to resiliently support the head or plunger 28.

lVhen the die members last described are fitted in -a punch press, the female members will be elevated and 'a partially formed closure blank, as illustrated in Fig. 3, will be laid upon the die block 16 with the groove 1l upwardly, and substantially as indicated in Fig. 9. When the female die is advanced to the -work the member 26 will engage the guide 21 to push it, and pressing member 25 will bear upon the metal 1 adjacent tothe inner wall 1l of the' blank and will force the same downwardly against the resilient resistance of member 17 while the groove 26'L in member 26 will engage the edge ortion. 1 of plate 1, (Fig. 9*), whereby e metal of plate 1 projecting beyond die block 16 will be forced downwardly and transferred from a position in thek plane of the plate to a position oiset from said plane or angular thereto as indicated at 1, (Figs.v11l and 12). During such operation the groove 26 not' only prevents the original groove 1'* of plate 1 from being displaced laterally but the outerl edge 1? will be rolled or turned inwardly, as indicated at 1'. B the opera-l tions described the metal for t e closure 1 is not drawn, in the ordinary sense of draw-v ing metal, to produce the wall 1, but is ilo transferred or reducedA from the position shown in Fig. 9 to position shown in Fig. 10, while at the same time the original 'groove 1* is notremoved from the plate but is reshaped, having its'edge'at 1 rounded inwardly by reason of contact with the curved recess 26 of die member 26.

While in severalI of the ii res the main body portion of closure 1 is s own at, said body portion may be given any desired shape by suitably shaping the die members 2 and By means of my improvements I am enabled to produce the closure described from a sheet of stock originally cut by the dies to the desired dimensions without having to provide for drawing of the metal to produce the finished closure. A further advantage of my invention is that as the. metal is not -required to be drawn, but is merely bent to the desired shape, the metal is not liable to crack at the cooperating edges or corners of the die members, since it is not necessary to unduly squeeze 4the metal or cause it to flow as the cooperating die members may fit With'suficient freedom with the metal for the closure therebetween to not unduly strain or crack the metal.

Having now described my invention, what I claim is: v

1. Means for reducing the marginal portions of blanks for closures having marginal grooves, comprising a block to receive a portion of the blank Within its marl ginal groove, a movable member around said block to oppose the grooved portion of the blank, a blank reducing member comprising a block having a recess and provided with a pressing member to cooperate with the first named block to reduce a portion of the blank fprojecting therebeyond, a member outside o the pressing member having a curved recess at its inner edge to cooperate with the outer edge of the blank for turning such edge inwardly, a head or plunger within the recess of the second named block adapted to oppose the mid-portion of the blank, and means movably connecting said head or plunger with the second named block, a guide movabl supported outside of the first named mova vle member, and resilient means supporting said guide.

2. Means for reducing the marginal portions of blanks for closures having marginal grooves comprising a base, a block` thereon, a movable member around the block to oppose the grooved portions of the blanks, springs normally elevating said member, a

second block having an interior recess and provided with a pressing member to oppose a portion of the blank located between the first named block and the outer edge of the groove of the blank, said second block being provided with a member having a recessed inner corner provided with a portion curved toward' said pressing member, and a head or plunger wlthin the recess of the second named block to op ose the blank on 'the rst named block, sani) head or plun `er being provided with a stem movably gui ed in a bore in the first named block, a guide around the first named movable member, and' springs normally retaining said guide with its upper surface above the first named block.

Signed at Passaic in the county of Passaic and State of New Jersey this 23rd day of November A. D. 1922.

CHARLES GUERITEY.

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