US2330756A - Metal edge box staying machine - Google Patents

Description

Sept. 28, 194-3. w, 3, STANGER I 2,330,756

METAL EDGE BOX STAYING MACHINE Filed Nov. 24, 1941 2 Sheets-Sheet 1 M/VEA/IWIF rv/r/msi' 4rramvsns'.

Sept. 28, 1943. w, D. STANGER" 2,330,756

METAL EDGE BOX STAYING MACHINE Filed Nov. 24', 1941 2 Sheets-Sheet Patented Sept. 28, 1943 UNITED" STATES PATENT; OFFICE M I I i' fassoa s s o METAL BOX STAYING MACHINE William ,1). Sanger, deceased, late of Seaside Park, N. J.,'by Esther M. Stanger, executrix,

Seaside Park, N. J., assignor to'Louis Wolf, El-

' kins Park, Elias Wolf; Dresher, Howard A. ,Wolf, JenkintowmandWalterL. Wolf, Rydai, Pa., co- 9 partners, trading as-National Metal Edge Box Gompany, Philadelphia, Pa. Application November 24,1941, Serial No. 420,192

This invention relates to that type of box or other article, usually constructed of cardboard, in which meeting edges of adjacent walls or sections of the article are permanently secured together and (or) reinforced, by means of a metal strip overlapping such edges. Said metal strip, as most usually constructed, has near each of its opposite longitudinal edges a row of holes with prongs extending from the peripheries ;of the holes and penetrating the cardboard and upset so as to be embeddedin the material of the cardboard or clinched on the reverse side, and an intermediate row of holes extending along the langitudinal center of the strip and which extends over the adjacent edges of adjacent sections of the article. The strip is applied to the article by positioning it in a die or hammer, which is moved toward an anvil (to which said sections have been applied) to bend the strip along its longitudinal edge against the adjacent faces of the sections and force the prongs into or through the material and upset and clinch them as above described. The adjacent faces of the anvil are smooth flat surfaces corresponding to the shape of the article, to be stayed and the die recess has smooth flat surfaces corresponding to the smooth fiat surfaces of the anvil.

Other metal strips or stays are provided with only a single row of fasteners. In other metal strips the fasteners of a row are staggered. Other metal strips are not provided with a row of perforations along that longitudinal section of the strip which extends over the meeting edges of the walls or sections of the article to be stayed.

An article the meeting edges of which are joined and reinforced as above described is open to the objection that, inthe bending of the strip along its longitudinal center, that is, directly through the central longitudinal row of perforations (if the strip contains such perforations), the metal surrounding and immediately adjacent such perforations is so distorted that the reinforced corner is decidedly rough-suinciently so as to scratch varnished surfaces and prevent free telescoping, such, for example, as the sliding of a box lid on and off a box. body. The object of the invention is to completely eliminate this roughness.

The object of this invention is accomplished by the modified construction of die and anvil hereinafter described and illustrated in the accompanying drawings, wherein Fig. 1 is a perspective view of the die which cooperates with the anvil to bend the metal strip over two angularly disposed sections of an-article and force prongs of the strip intofastening engagement with the material. Fig. 2 is an end viewofthe dieand anvil, with the adjacent sections of the article shown in section. Fig. 3 is an end view, and-Fig. fl is a perspective view, of the two sections of the article. after their union.

Fig. 5 is a side elevation of' box, staying machine.

In Fig. 5 is shown a stayingmachine ofthe type towhich this invention may be applied." It comprises a frame It on'wh'ich is mounted driving means m having a connection (not shown) with a lever it connected by a link 0 with a diecarrier p carrying a die 0. The die carrier and die are movable up and down on the frame is by actuating the treadle r connected to the driving mechanism. The anvil a is fixed to the frame. The metal strip e is fed to the die 0 and is held in longitudinally extending grooves therein, preparatoryto the staying operation, as shown in Fig. 2. For a further description of machines of this type, reference is made'to the Stokes Patent No. 793,549, issued June 27, 1905; the Jackson and Horton Patent No. 1,192,201, issued July 25, 1916; the 'Walz and Morris Patent No. 1,346,573, issued July 13, 1920; the Stanger Patent No. 1,918,922, issued July 18, 1933; and the Wismer Patent No. 2,070,767, issued February 16, 1937.

To the anvil a is applied the two pieces of material f, 1, which are to be secured together. The edges of the pieces meet at the ridge or corner of the anvil. The corner of the anvil is provided with a longitudinally extending recess d. The bottom of the die recess is provided with a longitudinally extending rib b. When the die 0 is moved downward against the material on the anvil, the projections on the strip e, as heretofore described, penetrate the material and secure together the meeting edges of the box sections f and 1. At the same time the rib b presses the meeting edges of the sections ,f, ,1" into the groove (1, draws together the stayed edges, and so bends in and buries any rough edges of the perforations that may be formed in the operation of bending the metal strip as to produce, along the line of perforations, a perfectly mooth surface.

The rib or blade b in the die recess may be made integral with the die, but it is preferred to make it as a separate member and confine it in a slot in the die. The rib b need not be shaped as shown, its shape, thickness and size being variable to adapt it to different sizes and forms of metal stays. It is not necessary in all cases to "by llliett'ers Patent is 1 3 staying of box corners, but also to the staying of p the meeting edges of any article, although it finds its most useful application tostaying the meeting edges of sections of articles which meet one another at an angle.

ing recessed along the corner or apex thereof for reception of the rib.

2. Means for staying the meeting edges of the walls of an article by the application thereto of a metal stripprovidedwith fastening prongs and with a 'row'of perforations; said means comprising an anvil having two faces extending at an "angle to each other, a die having a recess whose faces extend at the same angle to each other and Even Where the metal str'ipis unprovided with a row of perforations extending over the n'ieeting edges of theangularly disposed sections o'f ithe article to he stayed, it is advantageous to use this invention; and it should therefore be understood that, except in those claims which are otherwise expressly limited, the invention is notlimited in its application to operating upon any iparticulartype of metal stay.

' 'What is claimed. and d sired to be protected 1; Means for staying the Ine'etingedegs or the angularly disposed walls of an article by the "application thereto of a metal strip and bending the same around. said metin g edges, said means "i dmprising an "anvil having two' faces extending at "an angle to each o'ther, a-die having a recess whose faces extend at the same angle to each other and whichafre complementary to theanvil faces, and a rib' extending longitudinallyalong the bottom of 'th'e 're'cess oi the 'die, the 'anvi'lbecomplementary to the anvil faces, and a rib extendinglongitudinally along the bottom of the recess of the die, the anvil being recessed along 'the corner Ora'peX thereof for reception of the I .3. {Means for staying the meeting edges of artic'les by theapplication thereto of a metal strip provided with prongs and with a row of perfora- -tions, said means'comprising an anvil adapted .toholdadjacent sections of the article with their edges substantially meeting, a die having a shape complementary to that (of the anvil and adapted, in its mov'emel'it "toward the :anvil, Eto force the prongs 0f -the strip into lfastening engagement withthe sections of the :article, ?and a rrib, "on

the striking iface of the :di'e, adapted to :alignwith 'said row of perforations, rt'he'ranvil-having a longitudinally sextendingigraove adapted ito align with said row "of perforations and with the rib on the die.

' ESTHER'IMSTANGER,

Executria: of like .Estatecoj William D. Stringer,

Deceased.

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