US853094A - Stay-strip. - Google Patents

Description

ENO. 853,094. PATENTED MAY 7, 190'7..

x s. G. LEITGH.

STAY STRIP.

APPLIOATIQN FILED AUG. 10. 1906.

UNITED s'rA'rEs' PATENT' OFFICE.

SAMUEL GILEITCH, OF SOMERVILLE, MASSACHUSETTS, ASSIGNOR TO CARTER, RICE &'COMPANY, INCORPORATED, A` CORPORATION O MASSACHUSETTS.

No. 853,094. i

In the making of paper boxes in which a stay strip is employed to bind together two adj oiningisides of the box,I the strip is usually glued or pasted partly to one cof said adjoining sides and partly to the other and, therefore, has to' be bent at a right angle in order to lap over onto the two sides. Stay strips of various kinds for this purpose have been fmade, but diiiicultylhas been found in bending or folding the stay strip neatly and accurately along a line parallel with its sides which is necessary in order to make a good piece of work. When the stay strip is put on by machine, it is sometimes the practice to crease the strip 'along the intended folding line in ,order to enable it to be accurately folded. Sometimes this is done by means of a creasing device connected with the Inachine which applies the stay to the box, that is by runnin the iiat strip over' a creasing device just be ore it reaches the box. Sometimes this has been done by forming a longitudinalvcrease or groove in the face ofthe stay strip. This latter method is somewhat objectionable as it tends to weaken the stay strip along the folding line.

One object of the present invention is to l lprovide a stay strip indented in such a way that it will more readily fold along the particular line desired without creasing it along the folding line or in any other way weakening the strip along fthe said folding line, and at the same time to increase the flexibility. J

The invention consists essentially in forining in one face of the strip a series of depressions or indented diagonal lines on either side of the said intended folding line and slanting in opposite directions from each other, that is at an angle to each other, the

apexes of the angles formed by the junctions of the oppositely'inclined indented lines being ina straight line alongwhich vthe strip will readily fold. l

T he invention will vbe fu'lly understood from the following description taken in con- S-peccaton of Letters Patent.

Application iled August 10, 1,906. Serial No. 330.062.-

. box.

is preferably wound into a coil 21.

STAY-STRIP.

Patented May '7, 1907.

nectionl with the yaccompanying drawings,

and the novel features are pointed out and clearly defined in the claims at the close of the specification.

In the drawings,-Figure l is a perspective view of a coil of Stay strip embodying my in- 6o vention, partially uncoiled and showing the gummed face thereof with the diagonal lines of indentations. Fig. 2 is a longitudinal central section of a` piece of the stay strip on an enlarged scale from Fig. 1, the section being taken through the points of junction of the two oppositely inclined series of indented lines. Fig. 3 is a perspective view showing theA strip partially applied to the corner of a a modification in which the diagonal lines cut through the adhesive. -Fig. 5 is another /Referring to the draWings,-1 represents 5 the stay strip which, for convenience in use,` The body or backingr 2 of the strip is composed of cloth or paper or other suitable material and has upon one face a coating 3 of adhesive mate- 8o -rlal of suitable composition which may be applied in any well known way and dried. There is formed in one face of the strip,y preferably in the guinined face, if the invention is ,use'd with gunimed stay strip, as shown in 85 Figs. l1 and 2, a series of indented. lines 4, 4, on opposite sides of the intended folding line of the strip which, as shown in the drawings, is the median line lengthwise of the stri ,as

itis usually intended to fold the strip a ong 9o the middle. These lines are formed at an angle with each other and with the intended folding line, and preferably connect with each other vat their inner ends, forming an angle 5 at the point Ofjunction, the apexes of 95 all of these angles being a straight linewhich is the folding line. 'i

The lines 4, 4; may be formed in any way suitable or convenient, either by pressure as by-a wheel having wing flanges which are dis- Ico posed in angular relation to each other as the lines to be formed, or by a die or by cutters which cut through the film of adhesive. If formed by pressure, the indentations might be as shown in Figs. 1 and 2 in which a depression 1 o5 is formed on one side andla correspondin bulge 6 on the oppositelside. If the diagona lines are formed by cutting through the fil-m Fig. 4 is a longitudinal section showing 7o of adhesive, as shown' bylines 7 in iFig. 4,

there would not necessarily be any bulging same time there is no weakening of the strip Y, Y along the said line.

Heretofore in stay strips of this general character, it has been vfound that when ernployed to stay both the outside and the inside of the corner to a box, the stay strip has a tendency to spring out from one side or the other of the box owing to the fact that the gum does not'set sufficiently quickly. My present invention renders the stay strip'lexible at the point where thebend over the edge of the box occurs, so that there is no tendency on the part of the stay strip to become displaced or spring out, and it remains fixed in place. This fixing of the stay-strip occurs without the necessity of holding the stay strip inposition or very great pressure to be exerted bv the cornerstaying machinewhich appliesvthe stay strip to the box.

The formation of lines which cut or break' through the adhesive film, When the invention is used on gumrnedstay strip, causes the backing to more readily absorb the moisture, throughout the strip, as these lines extend laterally the entire width of the strip and may be placed at close intervals. After the strip is applied to the box, it dries quickly.

Nhile it is preferred `to have the diagonal lines of indentations in the gummed face of the strip, they lmight be made in the back face as shown in Fig. 5 and still`come Within the scope of my invention',` although I do. not consider this as desirable. While I. have shownthe indentations in the gurnined face of lthe strip in the form of diagonal straight lines, Vit Will be understood that the series of diagonal'lines may be made from` somewhat curved or irregular lines, all of which have thesame general vdirection as the straight lines, in place of using lines which are absolutely straight. v

I claim as iny invention:

1. The improved corner stay stripfhavingin one face thereof two series of diagonal indented lines at an angle to each other whose proximate ends terminate in the intended folding line.

2. A corner stay strip for boxes and the like having upon one face a coating of adhesive substance and having in a face thereof a series of diagonal indented lines on each side of the intended folding line, the lines on opposite sides of the intended folding line being at an angle to each other.

3. A corner stay strip for boxes and thev like having upon one face a coating of adhesive substance and having 4in one face thereof a series of indented diagonal lines on each side of the intended folding line, the indented lines on opposite sides of the intended folding line slanting in opposite directions, the inner ends of those on one rside of the intended folding line being connected with the inner ends of those on the other side of the intended folding line, the apexes ofthe angles formed by the junctions of the lines in the two series being in a straight line which forms the intended folding line.

4. A corner stay strip for boxes and the like having upon one face a coating of adhesive substance and having in the gummed face thereof a series of diagonal indented lines on either side of the intended folding line, the diagonal indented lines on opposite sides of the intended folding line being at an angle to each other. A

In testimony whereof I affix my signature, in presence of two witnesses.

SAMUEL G. LEITCH.

Witnesses:

ALICE H. MORRISON, AUNE TARR.

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