US2371414A - Seal - Google Patents

Description

March 13, 1945. w. STELZER SEAL ' Filed April 3, 1942 IN VEN'EORL Patented Mar. 13, 1945 UNITED STAT ES PATENT oFF cs SEAL I 7.

William Stelzer, Detroit, Mich assignor to Stoffel Seals Company, Incorporated,'New York, N. Y.. a corporation of New York Application April 3, 1942, erial No. 437.529

4 Claims.

cision tools.

The present invention aims to eliminate the inward curl without reducing the security or usefulness of the seal in any way by curling the rim of the seal outwardly and to wrap the cord or wire within the rim.

Anotherobject is to produce a novel pre-fabricated shape which necessitates the least eiiort for fastening of the seal in the field.

The leading object of the invention is to provide a novel seal and a novel method of securing it to a cord or wire so that metal with greater tolerances in thickness and temper may be used, and to conserve metal of a higher grade.

Further aims and advantages will appear by in-. spection of the drawing, wherein:

Fig. 1 is a sectional side view of the novel seal in the pre-fabricated shape before it is fastened;

Fig. 2, a plan view thereof;

Fig. 3, a sectional side view illustrating the method of fastening the seal.

Fig. 4, a plan view of the finished fastened seal;

Fig. 5, a plan view of a modified construction;

Fig. 6, a sectional side view of the seal corresponding to Fig. 1 but of modified construction.

Fig. '7, a further modification f the seal shown cup-shaped member I, shown in Figs. 1 and-2,

having a rim 2 whose lower extremity is curled at 3 to facilitate the press-fastening operation. The rim has two diametrically disposed slots 4 to accommodate the cords orwires 5 shown in I 8, or the die 8 is moved in the direction of arrow 9. An injector I0 yieldingly presses against 'the cup so that the shape of the back is maintained during the fastening operation. The seal may be made of any suitable metal, but in the preferred embodiment I use enainelled sheet steel, whereby the central areas of both sides of the seal may be used for advertising or utilitarian printing, as illustrated in Fig. 4.

While curl 3 as shown in Fig. 1 provides a cup that is extremely easy to fasten, because the effort required to close the rim is very small, the rim may be only slightly flared out as at H in Fig. 6, or not at all as in cup I2 shown in Fig. '7. These modified constructions require a greater pressure for forming the curl, but afford slight simplification in manufacture.

The novel seal is suitable for use with metallic or non-metallic cord, or wire, and it is customary to seal the two ends, whereby one end is held in one half of the rim, and the other end is heldin the other half. However, the seal is satisfactory in security and appearance if both ends are placed in the same half of the rim. Where certain wire is used instead of cord it is easier to place both ends in one rim. For this purpose I provide a modified construction shown' in Fig. 8 where a cup I similar to that shown in Fig. 1 has one half, as indicated by numeral 13, finished in fabrication so that the effort required to fasten the seal to the wire is further reduced.

It is apparent that the invention can be carried out in ways different from that shown, and

the outline of the seal may vary to suit the particular purpose for which it is intended, for

instance it may be formed as illustrated by seal I4 in Fig. 5.

Various methods of further securing a cord or wire in an inwardly curled rim, consisting of crimps or tabs, are known, and may be incorporated in this construction, however, I have found that a rim firmly curled around a cord holds the latter absolutely secure, so that crimping is of small value unless used only for appearance such as an ornament.

I do not wish to belimitedin the scope of the invention to these particular embodiments excord, and diametrically opposed slots to accommodate the ends of said cord, said marginal rim being of such a height that after it is curled it extends above and below the bottom of said cup shaped member.

2. A seal comprising a prefabricated circular cup whose rim has a pair of diametrically opposed slots to accommodate a fastening member, said rim being divided into two halves by said slots, one half beingcurled outwardly during pro-fabrication to form-a completed curl extend-- ing beyond the bottom surface of said cup, the other half being flared outwardly to form the beginning of a curl into which said fastening member is wrapped and which is closed in a press when the seal is to be secured.

3. A sheet metal seal comprising a prefabricated circular cu-p having a bottom arida marginal rim, the marginal extremity of said rim being bent outwardly in the pre-fabrication to form the beginning of an outward annular curl and to facilitate a re-bending operationduring which a fastening member is placed into said -curl to be enveloped and secured by said curl while it is closed in said re-bending operation the insertion of a fastening member, the marginal extremity of said rim being bent outwardly in the fabrication process to form the beginning 'of a curl of said rim and to receive a fastening memberto be embedded and locked in said rim in a re-bending operation so that said rim forms a closed annular curl extending on both sides of said bottom surface.

' WILLIAM STELZER.

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