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Número de publicaciónUS649761 A
Tipo de publicaciónConcesión
Fecha de publicación15 May 1900
Fecha de presentación17 Jul 1899
Fecha de prioridad17 Jul 1899
Número de publicaciónUS 649761 A, US 649761A, US-A-649761, US649761 A, US649761A
InventoresEmil Saltzkorn, Ludwig Nicolai
Cesionario originalAmerican Metal Edge Box Company
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: USPTO, Cesión de USPTO, Espacenet
US 649761 A
Resumen  disponible en
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Descripción  (El texto procesado por OCR puede contener errores)

No. 649.761. Patented May I5, |900. E. SALTZKURN & L. NIEOLAI.

E Y E L E T.

(Application med July 17,1899.)

(No Model.)

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SPECIFICATION forming part of Letters Patent No. 649,761, dated May "l5, 1900.

Application filed July 17, 1899. Serial No. 724,072. (No model.)

To @ZZ whom it may concern:

Be it known that we, EMIL SALTZKOR'Nand LUDWIG NICOLAI, subjects of the Emperor of Germany, and residents of Dresden, Germany, have invented certain Improvements in Eyelets, of which the following is a speciiication.

The object of our invention is to so con-` struct a metal strip or eyelet adapted particularly to fasten the edges of boxes that 'each projection will be turned in clenching at a point near its base. This object we attain in the following manner, reference being had to the accompanying drawings, in which' Figure l is a perspective view showing a metal strip embodying our invention. Fig. 2 is an enlarged perspective View of one of the eyelets. Fig. 3 is a plan view. Fig. 4 is a sectional view on the line 4 4t, Fig. 3. Fig. 5 is a section on the line 5 5, Fig. 3. Fig. G is a view showing the eyelet clenched to the cardboard side of a box or other strip. Fig. 7 is a view of a single eyelet embodying our invention. Fig. S is a view of a corner-strip having two eyelets embodying our invention.

Our invention is especially adapted for use in connection with the metal strips forming the metal edges of a pasteboard box; but it will be understood that while we have described the invention in connection with the strip in which a series of these eyelets is used a single eyelet may be used, such as shown in Fig. 7 if desired, as in manyinstances we may use either a single eyelet or a corner-piece having two eyelets, as shown in Fig. 8.

Referring now to Figs. l, 2, 3, and 4, A is a strip of metal adapted to be bent at right angles to form the metal edge of a box. This strip can be made in any length desired. Near each edge of this strip are a series of perforations d. The metal forced from the strip to form the perforations is in the present instance separated into four parts b by a suitable die, and each of these parts is curved so that the points will project slightly backward. The object of this is that when the eyelet is forced into the material the projec tion will be directed backward to clench rather than forward to close the opening.

In order to insure the bending of the projection at the base where it joins the metal strip, we undercut the projection at c, so that each projection is in the form of an arrowhead. Thus the greatest width of the projection is some distance above the point where it joins its base, and consequently when the projection is bent over to clench it will bend on a line below the points d d.

In making the arrow-head projections by undcrcutting each projection we form a short pointed projection a.' between each of the larger projections, as indicated in the drawings. These short projections a' are turned up, as shown in the drawings, and complete the circle, as shown in Fig. 3, so that the' edges of the strip around the opening will be smooth. y

It will be understood that while we have shown four points for each eyelet three or more points may be made, as desired.

l/Ve have shown the metal strip scalloped at each edge; but it will be understood that the strip may have perfectly-plain sides without scallops, if desired, or the strip may be shaped differently from that shown without departing from our invention.

IVe claim as our inventionl. As a new article of manufacture, an eyelet having one or more pointed projections undercut at the base forming arrow-heads, whereby the eyelet can be forced into the material and clenched, substantially as described.

2. As a new article of manufacture, an eyelet having a series of pointed projections unn dercut, and a series of short pointed projec- In testimony whereof:` We have signed our tions alternating With the larger projections, naines to this specification in the presence of substantially as described. subscribing witnesses.

3. As anew article of manufacture, a metal EMIL SALTZKORN. 5 strip forattaching the sides of boxes together, LUDWIG NICOLAI.

said strip having a series of openings, the Witnesses as to Emil Saltzkorn: metal from these openings being foreed up to Y HERNANDO DE SOTO, form prongs, said prongs being bent back# PAUL ARRAS. Ward and arrow-shaped so that they will bend Witnesses as to Ludwig Nicolai:

io at a point near the body of the strip when l H. D. JAMESON,

clenched, substantially as described.


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US2648486 *23 Mar 195311 Ago 1953Douglas Young IncCardboard box
US2684515 *24 Abr 195127 Jul 1954Victor F ZahodiakinFastening device
US2751139 *23 Abr 195319 Jun 1956Douglas Young IncCatch for a cardboard box or the like
US3090088 *7 May 196221 May 1963Foley & Lavish Engineering CoConnector device
US3242788 *7 Dic 196429 Mar 1966Truswal Systems IncConnector plate
US3295405 *3 Sep 19643 Ene 1967Burke James StanleyGrip plate for wooden truss members
US3667337 *11 Jun 19706 Jun 1972James Stanley BurkeGrip plate for wooden truss members
US6033144 *28 Ene 19987 Mar 2000World Wide Stationary Mfg. Co., Ltd.Ring binder mechanism
Clasificación cooperativaY10S411/92, Y10S411/921, F16B15/0046