US1999423A - Mounting corner - Google Patents

Description

Apmifi 30, 1935. LEY 1,999,423

MOUNTI NG CORNER Filed Dec. 31, 1932 5 Q) wawar. v. A Jain A TTUR/VEK Patented Apr. 3%, 1935 FAN? Ei lCE 3 Claims.

This invention relates to corner mounts for attaching cards, photographs and similar articles to the pages of an album or to other flat supporting surfaces.

One of the important objects of the present invention is the provision of a corner mount having a transparent face which will not obscure the portion of the card or photograph mounted under said face and which is substantially invisible.

Another object is the provision of a transparent corner mount which may be made of diminutive size to permit its use for mounting postage stamps in collectors albums and elsewhere and which will not obscure the face of the stamp.

A further object is the provision of a corner mount which will adapt itself to various thicknesses of cards or photographs mounted therein.

An additional object is the provision of a device of the character described which requires no folding and is ready for immediate use and which can be manufactured at an exceedingly low cost.

Other objects of the invention will be more specifically set forth hereinafter.

In the accompanying drawing showing one embodiment of the invention Fig. l is a plan view illustrating the use of a pair of corner mounts, constructed in accordance with the invention, for affixing a postage stamp to an album leaf or other flat surface; Fig. 2 is a plan view showing a blank of transparent material adapted to be cut from a continuous strip for use in making the corner mount; Fig. 3 is a front plan view of the blank with one corner folded underneath; Fig. 4 is a View in perspective of the blank in the condition shown in Fig. 3 as viewed from underneath; Fig. 5 is a front plan view of the blank with both corners turned underneath into overlapping relation; Fig. 6 is a view in perspective of the blank in the condition shown in Fig. 5; Fig. 7 is a rear plan view of the finished corner; Fig. 8 is a view in perspective of the backing provided with adhesive on both faces; and Fig. 9 is a cross sectional view of the corner mount on line 9 in Fig. 1.

Referring to the drawing, my invention is shown as embodied in a corner mount of right-angled triangular form, preferably made of transparent material in order that the portion of the card or other article being mounted which is inserted in the mount will be fully exposed and visible through the face of the corner. Although any suitable transparent material may be used for this purpose, I prefer to employ thin sheets of the cellulose hydrate known commercially as Cellophane because this material can be made (Cl. 4ll-158) transparent and colorless and very thin and flexible and will not tear easily.

In the illustrated embodiment of the invention, the corner mount comprises a face ll] of transparent sheet material having two flaps l2 and it of triangular form folded over on contiguous lines it and H3, at right angles to each other, to form the back portion of the corner. This forms a pocket between the face and back portion with an opening l9 on the hypotenuse side of the triangle.

The two flaps overlap at their adjacent edges in the back and to hold them in that position a back piece it of fibrous sheet material such as paper or the like is adhesively secured to the flaps. The back piece Zii is preferably provided with adhesive on both faces so that it may be fastened to the flaps by the adhesive on one face and the adhesive on the other face may be used to fasten the corner mount to the surface upon which it is to be mounted.

The back piece is'of smaller area than the area of the corner mount in order to leave a margin of transparent material projecting around the three edges of the corner mount beyond the edges of the back piece which is necessarily of opaque material. This accomplishes two purposes, first, it permits the corner mount to expand to take cards of diiferent thicknesses and, secondly, it eliminates the possibility of the edge of the back piece being visible when a card is inserted in the corner. If the back piece covers the entire back of the corner, its edge will be visible as a thin opaque line around the corner of the card inserted in the corner mount which detracts from the appearance of the mounting. At the same time the back piece prevents the corner expanding to take a thicker card. The two folded edges 22 and- 24 of the right-angled sides of the corner are preferably rounded folds without sharp edges in order to contribute to the expansibility of the corner mount and to permit the corner of a card to be fully inserted into the mount and in engagement with the folded edges.

In making the corner mount a rectangular blank 26 of suitable size is cut from a continuous strip 23 of cellophane or other suitable material (Fig. 2) which blank is folded along lines it and it, the flap i2 being first turned over on the line it and then the flap it on the line 58. The line it extends from one side of the blank at, a point a slight distance above the bottom line of the blank to a point slightly to the left of the center of the top line of the blank. After the flap l2 has been folded over, the flap M is then folded on line It, which line is located on the other end of the blank in a position symmetrical with that of line H3. The apex of the corner mount is therefore formed at the point 36 slightly below the upper edge of the blank which results in a slight launching of the material at point 32 (Fig. 5) but when thin material is used, this bunching of the material is not noticeable and has the advantage of closing the apex of the corner mount so that there is no possibility of its being opened up when a card or other object is inserted therein. Another advantage of this method of folding is that the face H] of the corner mount projects on the hypotenuse side of the corner a slight distance below the back portion of the corner which facilitates the insertion of the corner of a card or other object in the mount.

In folding the two fiaps to form the back portion of the mount it is essential that the adjacent edges of these two flaps overlap an appreciable distance because if the edges are merely butted, the adhesive on the back piece when it is applied to the flaps will percolate through the adjacent edges of the flaps and cause the back piece to adhere to the front face portion of the corner mount. It is therefore essential that the joint between the two flaps should be overlapped or closed sufiiciently to prevent the percolation of any, adhesive through the joint. In applying the back piece to the flaps the adhesive on one face thereof is moistened in any suitable manner and the back piece pressed to the flaps, care being taken in this operation to avoid pressure upon the edges of the corner mount because it is preferable that they should remain'as rounded folds.

In the use of corner mounts made in accordance with my invention, four mounts are placed on the four corners of the card or other object to be mounted, the adhesive on the backs of the mounts is then moistened and the card is laid on the supporting surface and the corner mounts pressed thereto. When small objects such as stamps are to be mounted, two corner mounts placed at opposite diagonal corners of the stamp, as: shown in Figure 1, will be found sufficient.

Corner mounts made in accordance with my invention are especially adapted for use in mounting stamps because they can be made in a small size and being of triangular form in which the back portion does not project beyond the front face, two mounts can be placed on the opposite diagonal corners of a stamp without interference one with the other. The face of each mount covers a portion of the stamp large enough to prevent curling of the stamp and to hold it securely in place, and since the face is transparent, it does not obscure the face of the stamp.

It is to be understood that my invention may be embodied in forms of construction other than that herein shown and described, all within the scope of the following claims.

What I claim is:

l. A corner mount of right-angled triangular form comprising a triangular face portion of thin cellophane and a triangular back portion of smaller area than said face portion made up of a pair of triangular flaps integral with said face portion and folded over on adjacent intersecting lines at right angles to each other into overlapping relation at their adjacent edges, the surplus overlapped material at the apex of the mount being folded over to close said apex, and a triangular sheet of paper adhesively secured to said flaps to hold them in overlapped relation, said sheet being of smaller area than said back portion in order to present transparent edges on both the front and back of said corner and having its exposed face coated with adhesive.

2. A corner mount of right-angled triangular form comprising a triangular face portion of cellophane and a triangular back portion and having a card receiving opening on the hypothenuse side of said mount, said back portion being of smaller area than said face portion permitting said face portion to overlap said back portion on the said hypothenuse side to facilitate the insertion of a corner of a card within said mount and said back portion comprising a pair of flaps integral with said face portion and folded over on adjacent lines at right angles into overlapping relation at their adjacent edges and a triangular sheet of paper adhesively secured to said flaps to hold them in overlapped relation, said sheet being of smaller area than said back portion in order to present transparent edges on both the front and back of said corner and having its exposed face coated with adhesive.

3. A corner mount of approximately right angled triangular form comprising a rectangular blank of thin cellophane folded upon two lines at right angles to each other, each of said lines extending from one end of said blank adjacent the bottom edge thereof to intersect with the other of said lines at a point below and adjacent the top edge of said blank, said folded portions being in overlapping relation with the sur plus material at the apex of the corner mount folded over on the back of said mount, and a triangular sheet of paper adhesively secured to said flaps to hold them in overlapped relation, said sheet being of smallerarea than said back portion in order to present transparent edges on both the front and back of said corner and having its exposed face coated with adhesive.

LESTER S. RILEY.

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