US1976281A - Affixable corner mount for pictures - Google Patents

Description

Oct. 9, 1934. HERMANN 1,976,281

AFFIXABLE CORNER MOUNT FOR PICTURES Filed July 8, 1933 nyfa. J

Patented Oct. 9, 1934 fcToR'1-';i :aiuoiriwfi on PICTURES Heinrich Hermann,- Stuttgart-Wangen,Germany, ..r assignontmLeopold-Rado,Berlin, Germany ppli'eialtio 4 Claims.

, 'I'l'1e,-present ,invention-relatesto an ailixabl corner mount for pictures, which is made, up;o f,a transparent upper,section and a lower section connected therewith, the lower portion being. of 6 paper or'other inferior-fibrousmaterial which serves as afixative carrier.

. In the already known corner mounts :of this type, the transparent. or translucent upper section, consisting, for instance of fibreless cellulose .10 membrane, is folded into the form of what isv really a triangularpocket. In this construction, the lower section-, which carries the fixative, constitutes merely a reinforcing surface for the folded-under .flap o'fzthe transparent. pocket;

.1l u Theseknown types of corner mounts have the drawback that the cutting. folding and, putting together otthe tworhalvesrare 'cumbrousoperations that occupy considerable time.'and necessitate special machines that are'very; expensive. Moreover, the unnecessarilyhigh-expenditure :of first-class material to form the upper; transparcut section, raises the productionoasts: con'sid-= erably. In most cases also :it .is -impossible. to. avoid waste inputting the'blanks from-strips ofv r w material is fed inadirection oblique to the width 80 materiaL- 7 V tending between two edges of thelower section at right angles to one another, and formed of a:

strip doubled over at its endsa Preferably'the arrangement is such-thatthe doubled over ex tremities of thestripforming theretaining bar,.

are folded over the right-angled edges of the lower section and are secured to'the back of the said lower section which carries the fixative.

In view of the fact that the under side of the lower section of the mount, which carries the fixative, is covered in places by the foldedover extremities of the transparent strip, arrangements must be made to ensure a reliable adhesion of the mount when fastened to a backing support. For this reason the corner of the lower portion formed by the aforesaid edges at right angles projects beyond the transparent retaining bar in the form of a tab, the fixative layer on the back extending on to this projecting corner.

In the new method of putting the corner mount together, the amount of high-class material necessary to form the transparent upper section is limited to the utmost possible minimum. The lower section of the corner mount can be made exclusively of paper or some other inferior fibrous material. The outline form of both sections of The present invention- 'remedies lithese sdraw-e backs and is'characterized in that the transparent '[J' iyiiri933, Serial No. 679,563 I ssr' ierv emb 28, 1 2-1; 1..

the ,inountv isextremely simple. Thus, for instance, both the transparent retaining bar as well as the lower portion which carries the fixative can be cut'to rectangular form. The tools and machines .required for this purpose are of very simple type, while the combining of the two sections can be eiiected in a manner which is materially more simple than hitherto.

In order to manufacture the improved corner mount by mass production, a further feature of the invention consists in an improved process for its manufacture, in which several rectangular blanks, intended to form the under portions of the. corner mounts are cut simultaneously, by incisions at right angles to each other, from an. intermittently fed strip of paper or other inferior, fibrous material, the transparent strips being cut from a} se,c0nd intermittently fed strip of transparent material by incisions transverse to the direction 'offeed of said strip. All waste may be avoided by making the incisions both lengthwise and crosswise of the endless strip of fibrous material so as to form a zig-zag cutting line obliquely across the strip, while the strip of transparent of fibrous material and strips are out therefrom by transverse 'incisionsparallel to the common diagonal of the rectangular pieces out from the strip of fibrous material.

Practical constructional forms of the corner mount and of the process for its production are diagrammatically illustrated in the accompanyingldrawing, in which Figs. 1, 2 and 3 show a constructional form of the corner mount in views from above, from below, and in section respectively;

"Fig. 4 shows a second constructional form in plan view;

Fig. 5 shows the method of production of the cornerfmount shown in Figs. 1-3; while Fig. 6 illustrates the production of the corner mount'according to Fig. 4.

Figure 7 is a fragmentary top plan view of the corner mount in applied position;

Figure 8 is a section on the line 88 of Figure 7.

In the constructional form illustrated in Figs. 1-3, the corner mount is made up of a square or rectangular piece a of paper or other inferior fibrous material and a strip b of transparent material, such as, for instance, fibre-free cellulose membrane. The strip 17 extends over the rectangular piece a parallel to a diagonal of the latter and is folded over at its extremities over two right-angled edges of the piece a, the foldedunder section a which acts as fixative-carrier is of dovetail form. The points-thus-formed at the one extremity of the section, may, if desired, be folded upwards along some .such lineas "ac-J: and secured to the picture which is to be kept in position by the corner mount. y

In both constructional forms, the strip 1), forming the transparent retaining bar, of such size and so fitted that a corner of the lowefs'ec tion betweenthe right-angled edges over which the strip is folded, projects in the form of a peak a beyond the retaining bar. The underside of the back piece a is coated over its entire surface '1 with a layer of adhesive substance, the said layer thus'extending as far as the extremity of the peak a. When the corner mount hasbeen mounted on a support by means of the layer of fixative on its back, any loosening of the mount witlriin,thearea of the transparentretainingjbar prevented 'by the peak a which "adheres to the support backing. Without the peak a no rel-i-ableffastening of'the corner mount would be possible, because the folded-over extremities fc of the-retaining bar I) cover a part of the fixative According to Fig. 5, the mass production of the mounts represented in Figs. 13, is carried out in the following manner: From an intermittently 4 fed strip (1 of paper or the like, byincisions made alternately in the longitudinal and cross'direction of the width, several square or rectangular pieces a a are severed. In this way there is produced a continuous, stairlikelcutting outline g ,-h g 7L2 of zig-zag, form-extending obliquely across the strip d. Either beforeor after the detachment of the 'rectangularpie'ces a a-', a band 1. of transparent material, such as, for example, fibreless cellulose membrane. is fitted over the projecting halves of these rectangular pieces and parallel to their common diagonal. This band. 1 is cut off from an endless strip 6 in a direction transverse tothat of its feed, the said strip e being fed obliquely to the paper width d. The

--band f is then subdivided along the lines 1', i

rectangular pieces a a? ner mount shown in Fig. 4 is effected by cutting the under portions a of the mount, individually and 'by angular incisions from an intermittently fed band k, so that the said under sections are of dove-tail formation. The transparent strip intended to form the retaining bar I) may be attachedto each separate part a"either before or after the detachment of thelatter.

What I claim as my invention and desire to secure by Letters Patent is:-

'1. A corner mount for pictures including an under section adapted to act as an adhesive carrier and having two right angularly related edges, there being an adhesive layer on the under side of saidunder section, and a picture-retaining .strip extending across one corner of the under .section and having its ends folded over the right angled edges of said under section and aflixed to the under side of said under section, that corner of the, under section which is formed by the right angled edges extending beyond the said picture retaining strip," the adhesive layer on the back of the section extending as far asthe extremity of said corner.

I 2. -A corner mount for pictures comprising a transparent upper section and an under section of fabric acting as an'adhesive'carrier, the transparent upper section constituting a retainer and being formed of a strip having its ends folded over two right angled edges of theupper section and aflixed to the under side of the under section, the corner of the under section which is formed by the right angled edges projecting beyond the trans meansof incisions at right angles to each other,

cutting a stripfrom a second intermittently fed sheet or transparent material, cutting each of said strips into short lengths. to form picture retainers, folding said short lengths at their ends over the angularly related edges of the rectangular blanks,:and securing the folded over ends tov the back of said rectangular blanks.

4. A method of manufacturing aflixable corner.

mounts according to claim 3 further characterized in that several rectangular blanks are simultaneously cut from a correspondingly wide sheet by incisions in both longitudinal and transverse directions so as to form a zig-zag cutting line while the sheet of transparent material is fed in a direction oblique to the first-named sheet, with its edge at an angle of 45 to the length of the firstmentioned sheet, the second named sheet having a width equal to the width of a 45 diagonal on the first named sheet.

HEINRICH HERMANN.

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