US2596719A - Staple remover - Google Patents

Description

y 1952 w. G. PANKONIN 2,596,719

STAPLE REMOVER Original Filed Sept. 2, 1949 INVENTOR.

ATTOWY Patented May 13, 1952 UNITED STATES PATENT QFFICE- 2,596,719 STAPLE REMOVER William G. Pankonin, Chicago, Ill.

Original application September 2, 1949, Serial No.

113,849. Divided and this application Novena,- ber 13, 1950, Serial No. 195,277

2 Claims. (Cl. 254-28) This invention relates to improvements in tools for removing sheet-binding staples from sheets of paper or other material which have previously been secured together by the staples. This application is a division of the application of applicant herein, Ser. No. 113,849, filed September 2, 1949 for Staple Remover. A tool of this type is described and claimed in Patent No. 2,033,050,, issued to William G. Pankonin on March 3; 1936. While the staple remover therein described operates satisfactorily, it will efficiently remove only staples of the one size of crown for which it was designed and will not efficiently remove staples the crowns of which are smaller than that for which the remover was originally designed.

It is an object of this invention, therefore, to provide a device which will readily remove staples having a variety of widths at the crown.

Another object of this invention is to provide a device of this character which is simple in construction, low in cost of manufacture, and quick and reliable in operation.

In the removal of staples from material where the legs have been clinched or bent over under the material, it is necessary to provide a solid surface which during withdrawal of the staple bears against the inner side of each leg and straightens each leg enough to prevent substantial damage to such material. The surface for each leg must be closely adjacent such leg to be effective in a practical manner. The foregoing objects are obtained by making the relative po-' sitions of each surface selectable so that such surface will be close to its respective leg even though the distance between legs varies with different size staples. In this modification there are several of such surfaces spaced at varied distances so that those properly spaced for the particular size staple may be used.

The novel features, which are considered characteristic of the invention, are set forth with particularity in the appended claims. The invention itself, however, both as to its organization and its method of operation, together with additional objects and advantages thereof, will best be understood from the following description of a specific embodiment when read in connection with the accompanying drawing, in which: I

Fig. 1 is a view in side elevation of a stapleremoving device embodying the present invention;

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1 showing the relative positioning of the staple-engaging teeth as they are about-to engage a staple with a relatively small or' narrower than standard crown;

Fig. 3 is a sectional view taken on line 2- -2 of Fig. 1 showing the staple-engaging teeth after they have substantially removed such staple Fig. 4 is a sectional view taken on line 22 of Fig. 1 showing the staple-engaging teeth as they are about to enter under a staple'with rela tively large or standard crown; and

Fig. 5 is a sectional view taken on line-2-2 of Fig. 1 of the staple-engaging teeth after substantially removing such staple.

Referring to the drawings by reference numerals, all modifications of the staple remover have opposed cooperable jaws I0 and I2 which are pivoted at [4 so that they may be swung toward each other under the influence of manual force applied to handles it and I8 and swung apart by a spring (not shown). Each jaw has teeth with upper and lower camming surfaces enlarging outwardly from their intersection or point of the tooth. In the modification herein described, as the jaws are brought together, such camming surfaces operate in the manner de-.-

scribed in the aforesaid patent and reference is made thereto for a full and complete description of such action.

As shown in Figs. 1 to 5, inclusive, the jaw 12 has two teeth 50 and the jaw H) has three teeth 52, all of which are laterally fixedly spaced. The outside teeth 52 are spaced from the middle tooth 52 so that a pair thereof comprising the middle tooth and one of the outer teeth will enter under the crown and be close to the inside of the legs of a staple with a relatively small or narrower than standard crown. The two outside teeth are spaced at such a distance that they will enter under the crown and be close to the inside of the legs of a staple with a relatively large or standard crown. The teeth 50 on the jaw l2 are spaced with respect to the teeth 52 so that each one will enter in between adjacent ones of the teeth 52 and leave enough space between each tooth 50 and the middle tooth 52 to accommodate the leg of a staple therebetween. Thus when the remover of this modification is used to remove a staple S with a relatively small or narrower than standard crown, the jaws l0 and I2 are placed on opposite sides of the bridge of the staple as shown in Figs. 1 and 2 and the outer sides and lower camming surfaces of the middle tooth 52 and one of the outer teeth 52 will provide surfaces which bear against the inside of the staple legs to straighten said legs as the staple is removed. One of the teeth 50 will act upon the staple crown and the other tooth 50 will lie outside the legs of such staple during removal thereof as the jaws l and 12 are brought together in the manner substantially as described in the aforesaid patent. A staple L with a relatively large or standard crown is removed by placing the jaws l0 and 12 on opposite sides of the bridge as shown in Figs. 1 and 4 and as the jaws are brought together the outer sides and lower cam-' ming surfaces of the outermost teeth 52 will provide surfaces which bear against the inside of the legs to straighten them during removal thereof in the manner described in such patent. In such case the middle tooth 52 has no material effect. Hence the device of this modification can efiiciently and readily remove staples with smaller than standard crowns as well as staples with standard crowns.

Although only one embodiment of the invention-is shown and described herein, it will be understood that this application is intended to cover such other changes or modifications as come within the spirit of the invention or scope of the following claims.

I claim:

1. In a staple remover having cooperable jaws provided with spaced teeth insertable beneath the crown and between the legs of a sheet-binding staple and relatively movable into overlapping relation to remove said staple. one of said jaws having a plurality of teeth spaced laterally so that two adjacent teeth enter in between the legs of a staple having a relatively small or narrower than standard crown and three adjacent teeth enter in between the legs of a staple having a relatively large or standard crown, the other of said jaws having a pair of teeth one of which is cooperable with said two adjacent teeth and both of which are cooperable with said three adjacent teeth.

2. In a staple remover having coo'perable jaws provided with spaced teeth insertable beneath the crown and between the legs of a sheet-bindi staple and relatively movable into overlapping relation to remove said staple, one of said jaws having three laterally fixedly spaced teeth and the other of said jaws having two laterally spaced teeth so alined with said three spaced teeth that various combinations of the teeth on opposite jaws may be utilized to remove staples of varying size crowns.

WILLIAM G. PANKONIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number

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