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Патент USA US2068909

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Jan. 26, 19.37.
A, w’ ENG'E;
TRANSPARENT MOUNTING CORNER
‘ Filed March 23, 1953
'
2,068,909
Patented Jan. 26, 1937
2,068,909
UNITED STATES PATENT OFFICE
2,068,909
TRANSPARENT MOUNTING CORNER
Albert W. Engel, Chicago, 111.
Application March 23, 1933, Serial No. 662,231
9 Claims.
The purpose of this invention is to provide an
improved mounting device in the form of a pocket
for securing photographs, pictures, cards and the
like to any suitable mount in a convenient, artistic
manner, with the corners of the card or picture
inserted in the pockets which constitute the in
vention, and with said pockets adhesively a?ixed
to the mount. Another object is to provide a
mounting pocket of this character which shall be
10 transparent, and therefore substantially invisible,
so that it shall not obscure any portion of the
picture which it overlies. A further object is to
adapt a pocket of this character for securing the
card or picture either temporarily and remov
15 ably, or permanently, at the option of the user.
Another object is to permit the construction of
the transparent portion of the pocket of celluloid
or cellophane or like material, while combining
therewith a ?brous material ‘such as paper, which
20 may be rendered adhesive more reliably than the
transparent material.
In the drawing:
Figure 1 illustrates a grouping of the three
elements which constitute one form of the mount
25 ing corner, showing them in disassembled relation.
Figure 2 is a perspective view of the completed
corner on a larger scale.
Figure 3 is a. fragmentary view of a picture or
the like as secured to a mount by means of a
30 mounting corner of the type shown in Figure 2.
Figure 4 is a detail section taken as indicated
at line 4—4 on Figure 3.
Figure 5 illustrates a grouping of three elements
which constitute a modi?ed form of the corner,
and which are shown in disassembled relation.
Figure 6 is a perspective view of a ?nished
corner made from the elements shown in Figure 5.
Figure 7 illustrates a grouping of two elements
adapted to form a modi?cation of the preceding
corners.
Figure 8 is a perspective view showing said two
elements assembled into a ?nished mounting
corner.
Figure 9 illustrates a further modi?ed con
45 struction consisting of two elements shown in
disassembled relation.
Figure 10 shows a ?nished corner composed of
the two elements of Figure 9 with the backing
member secured to the inner surface of the flaps
50 of the pocket member.
Figure 11 shows a ?nished corner composed of
the two elements of Figure 9 with the backing
member secured to the outer surface of the flaps
of the pocket member.
Figure 12 illustrates still another modi?cation
55
composed of two elements shown in disassembled
relation.
Figure 13 shows the parts of Figure 12 assem
bled with the backing member secured to the outer
80 surfaces of the ?aps.
(Cl. 40-158)
Figure 14 is a perspective view of a corner com
prising three elements, namely, a pocket member
with folded ?aps and two similar backing mem
‘cars like the one shown in Figure 12.
This application represents a further develop
ment of the invention to which my Patent No.
1,913,110, issued June 6, 1933, is directed. In fact,
Figures 1 to 8 of the drawing herein illustrate
structures similar to‘ those shown in said patent.
The desirability of using transparent material
for a pocket mounting corner is obvious; it is
almost invisible in use, because the portion of
the picture, or any printed matter on the sheet
which is secured in position thereby, shows
through the transparent material overlapping the
corner of such sheet. When the transparent por
tion of such a corner is made from sheet material
folded into form, it is desirable to add an ad
hesive'member to complete the pocket, and also
to carry the gum which may be moistened for
rendering the pocket adhesive to a mounting sur
face when it is put in use.
Figure 1 shows such a pocket composed of
three elements, namely, a triangular sheet of
paper, I, preferably gummed on both sides, a
formed corner pocket of the transparent mate
rial, seen at 2, and a second triangular sheet
of paper, 3, also shown gummed on both sides.
The member, I, forms the bottom layer of the as
sembled pocket.
10
15
20
25
The under ?aps, 4, 4, of the 30
transparent member, 2, are secured to the upper
gummed surface of said member, I, and the
third member, 3, is inserted in the pocket, so
that its under gummed surface is adhesively se
cured to the upper or inner surfaces of the flaps, 35
4, and to the portion of the upper surface of the
member, I, which is exposed at the space or open
ing formed between the inner outlines of the
?aps, 4.
The ?nished corner is shown in Figure 3, and
it will be seen that the notch formed at 211 in the
continuous triangular area of the transparent
upper wall, will facilitate entering the corner
of a sheet or card in the pocket. If it is desired
to secure such sheet permanently in the pocket, 45
the sheet itself may be moistened on its under
surface before insertion, and then as it is entered
in the pocket, it may be pressed against the up
wardly exposed gummed surface of the part, 3,
to which it will adhere. The upper surface of the 50
card or picture, 5, will be visible clearly through
the transparent material, 2, of the pocket, as
seen in Figure 3. The adhesive on the under side
of the member, I, will serve for attaching the
pocket to a mounting surface. Figure 3 repre 55
sents a fragment of such a mount at 6, with the
corner portion of a picture or card, 5, secured in
a pocket indicated at 2, in the usual position for
such use. The relation of the parts is clearly in
dicated in section in Figure 4.
60
2
2,068,909
If celluloid or cellophane is employed as the
material of the pocket member, 2, the adhesive
used on members, I and 3, may be such as will
form an effective bond with the transparent ma
terial. However, to further ensure the perma
nency of this connection, the flaps, 4, are formed
with terminal portions adjacent the open side of
the pocket, which are wider than the remainder
of the ?aps, so that the inner outline of each ?ap
is angular, and the space between them at the
open edge of the pocket is narrower than at a
on both sides. The gum employed is such as to
form a ?rm and permanent bond with the trans
parent material of the member, 2, and the tri
angle, I5, may be secured either to the inner sur
face of the flaps, 4, as shown in Figure 10, or it
maybe fastened to the outer surface of said flaps,
4, as seen in Figure 11. With the arrangement
of Figure 10 a part of the gummed area is ex
posed outwardly through the spaces between the
edges of the flaps, 4, and will serve for securing
the pocket to a mount such as that shown at 6
point remote from said edge. Thus the areas of
the ?brous members, I and 3, which are adhe
sively secured to each other, are inter-locked with
15 these angular ?aps against withdrawal in the
direction of the open edge of the pocket; hence,
even if the adhesive should not hold perfectly be
in Figure 3. This leaves the entire upper gummed
surface available for fastening the picture into
tween the cellophane or celluloid and the ?brous
the entire lower area is available for attaching
members, this inter-locking arrangement will
the pocket to the mount.
Figure 12 illustrates a two-part construction 20
comprising a transparent pocket member, 5!), and
a ?brous member, 89, which may be understood
serve to hold the parts in their assembled rela
tion.
A feature of my present structure is that the
?brous triangular members, I and 3, are slightly
smaller than the triangular outline of the trans
parent member, 2, so that when the parts are
assembled, the folded marginal portions, ‘I, of the
the pocket, if desired. With the parts as
sembled as shown in Figure 11, a portion of the
upper area of the part, I6, is exposed in the
spaces between the edges of the flaps, ll, 5, while
as gummed on both sides.
The pocket member
is similar to the member, 2, of Figure 1, except
in two particulars. Its upper triangular area has 25
no notch cut in its hypotenuse. Instead, the
?nished pocket, are outside the outlines of the
gummed member, 68, of ?brous material, is
opaque members, I and 3, and when a card or
formed with a notch, GI, and this member is as
picture, such as that indicated at 5 in Figure 3,
sembled with the pocket member, Ell, so that the
notched edge is substantially flush with the
30 is inserted in such a pocket, the paper parts, I
and 3, are completely hidden under the card, 4.
This feature is of especial advantage in mount
ing postage stamps or other articles having ser
rated edges which are thus completely accom
modated in the transparent marginal portions,
‘I, of the pocket, with the paper parts, I and 3,
wholly covered by the solid area of the stamp.
The result is a very neat effect, owing to the
unobtrusive character of the mounting pocket.
Figures 5 and 6 illustrate a modi?cation in
which the three-ply lower wall of the corner
straight edge, 5!, of the pocket. And the flaps.
54, instead of terminating parallel with the edge,
5I, are cut back slantingly with respect thereto.
The ?brous member, 60, may be adhesively se
cured to the under surfaces of the flaps, 54, as in
Figure 13.
Or, if desired, two similar members,
indicated at 62 and 63 in Figure 14, may be se
cured to opposite faces of the ?aps, 5L3, forming
a three-piece structure in which, at the open
side of the pocket, one edge is the straight edge, 40
5|, of transparent material, and the other edge
projects beyond the upper transparent wall, 20,
at the hypotenuse, 2i, of said upper wall, to
is a two-ply edge of paper, or the like, the two
facilitate entering the corner of the card or pic
ture which is to be mounted. In this construc
tion the hypotenuse, 2i, is not notched as in the
form shown in Figure 1, since the function of
the notch, 21*, shown in Figure 1, is to be per
formed by the projection of the lower wall be
yond the hypotenuse in this modi?ed style. The
reason of the slanted formation of the ends of
layers being bonded directly to each other by
flaps, 54. The members, 62 and 63, are both 45
notched at 6V‘.
With the devices of Figures 13 and 14., the cor
ner of the card or picture to be mounted is in
transparent portion of the pocket includes flaps,
40, folded under the upper wall, 20, and formed
serted in the pocket by registering it first in the
notch, SI or 6 Ia, and pressing it upwardly against 50.
the overlapping transparent area of the pocket
member, 50, thus forcing the pocket open suffi
with notched inner edges to secure an inter-lock
ciently to receive the corner of the picture.
ing effect with the triangular paper members, III
and 30, when the parts are assembled.
Figure 7 shows a slight modi?cation from the
structure of Figures 1 to 4, in which a single
piece of material is substituted for the triangles,
shown in the drawing, notched members, 60, 62
I and 3. It may be a substantially square sheet
60 folded along its diagonal, I5, to form triangular
halves, II and I5, so that these two halves may
be assembled against opposite surfaces of the
flaps, 4, 4, of the transparent corner member,
2. This arrangement may simplify the process
of assembly, and will slightly strengthen the con
struction, at the same time giving the ?nished
article a somewhat neater appearance, because
the folded edge, I5, will replace the three-ply
edge of the construction shown in Figures 1 to 4,
as will be clear from Figure 8.
Figure 9 shows the unassembled parts of a
As
and 63 may be made smaller in area than the 55
outer face of the pocket member, 50, so that
their edges shall be set back from the folded edges
of the pocket members, thus leaving completely
transparent marginal portions of the pocket for
a purpose already made clear in the description 60
of the preceding forms of my invention.
The precise method of manufacture has not
been described herein, but there are several ways
in which the parts may be assembled, either by
hand or by automatic machinery. Furthermore,
it may be understood that the ?brous or paper
elements, I and 3, I0 and 39, II-I3, I8, 60, 62
and 63, of the several constructions herein de
scribed, may be double-gummed stock, that is,
sheet material which has been previously coated 70
on both sides with a gum which only requires
ment, 2, and a single triangular element, l6, of
moistening to make it adhesive; but double
gummed stock is not essential, since the two op
posed faces of the ?brous members, I and 3, or
15 ?brous material, such as paper or textile gummed
the corresponding parts of the other structures,
pocket corner composed of two elements instead
of three, comprising the transparent corner ele
2,068,909
may have a gum or mucilage applied to them in
the process of assembly, in which case the stock
need be previously gummed only on one surface,
which is to be moistened by the user in mounting
the pocket or in securing the picture or card
therein.
While there is shown and described herein cer
tain speci?c structure embodying this invention,
it will be manifest to those skilled in the art that
10 various modi?cations and re-arrangements of the
parts may be made without departing from the
spirit and the scope of the invention, and that
the same is not limited to the particular form
herein shown and described, except in so far as
15 indicated by the appended claims.
I claim:
1. A mounting pocket comprising a top wall of
transparent sheet material with ?aps of said ma
terial folded thereunder and along two sides of
20 the pocket, together with a layer of ?brous sheet
material adhesively secured to said flaps, tying
them together to form the bottom wall of the
pocket, said bottom wall having a notch in its
25
35
40
45
50
55
3
each other, leaving a relatively wide space be
tween the edges of said ?aps under the top wall,
and a layer of gummed ?brous sheet material
adhesively secured to said flaps and extending
across the space between their edges to form a
bottom wall for the pocket with a portion of its
gummed surface exposed in said space, said bot
tom wall having a notch in its edge at the open
side of the pocket and disposed under the area
of the top wall.
10
6. A mounting pocket comprising a triangular
top wall of transparent sheet material with flaps
of said material folded under and along two
sides of the triangle, leaving a relatively wide
space between their edges under said top wall, 15
and a layer of ?brous sheet material gummed
on both sides and adhesively secured to the inner
surface of said ?aps with a portion of its gummed
surface exposed outwardly through the space
20
between their edges.
'7. A mounting pocket composed of a top wall
of transparent sheet material with flaps of said
material folded under and along two sides of the
edge at ‘the open side of the pocket and the top ’ pocket and having respectively, at their inner
wall overlying the area of said notch.
ends, terminals which project toward each other, 25
2. A mounting pocket of right-triangular form forming, back of said terminals, recesses in the
comprising a top wall of transparent sheet mate
oppositely facing edges of the flaps, and a single
rial with portions of said material folded there
layer of gummed ?brous sheet material adhe
under along the two legs of the triangular out
sively secured to said ?aps extending across the
line, and a layer of ?brous sheet material adhe
gap between said recessed facing edges with its 30
sively secured to said portions connecting them gummed surface exposed through said gap for
and forming the back wall of the pocket, said adhesive attachment to the surface of another
back wall being also of right-triangular outline element with which the pocket is to be employed,
and except for a right-angled notch formed in whereby such attachment locks the ?aps and
its edge at the open side of the pocket and under thereby the top wall of the pocket against edge 35
the area of the top wall with the sides of said wise withdrawal.
8. A mounting pocket composed of a top wall
notch substantially parallel to the legs of the
of transparent sheet material with ?aps of said
triangular outline.
3. A mounting pocket comprising a triangular material folded under and along two sides of the
top wall of transparent sheet material with flaps pocket and having respectively, at their inner 40
of said material folded under and along two sides ends, terminals which project toward each other,
of the triangle, leaving a relatively wide space forming, back of said terminals, recesses in the
between their edges under said top wall, and a oppositely facing edges of the ?aps, and a single
layer of ?brous sheet material gummed on both layer of gummed ?brous sheet material adhe
sively secured to said ?aps extending across the 45
sides and adhesively secured to the under sur
faces of said ?aps with a portion of its upper gap between said recessed facing edges with its‘
surface exposed toward the top wall through said gummed surface exposed through said gap for
space between the edges of the flaps, said bottom adhesive attachment to the corner of a picture
Wall having a notch in its edge at the open side card or the like when the latter is inserted in
of the pocket and disposed under the area of the the pocket, whereby such attachment locks the 50
top wall.
?aps and thereby the top wall of the pocket
4. A mounting pocket comprising a triangular against edgewise withdrawal.
top wall with ?aps integral with it at two sides
9. A mounting pocket composed of a top wall
folded toward each other under said top wall of transparent sheet material having two edges
and having respectively at their inner ends ter
at right angles along which the material is folded 55
minals which project toward each other forming under itself in the form of ?aps providing space
back of said terminals recesses in the oppositely for the insertion of a picture card or the like
facing edges of the flaps, and a layer of gummed with its edges stopped by said folds, the card
?brous fabric material adhesively secured to said being entered at the open edge of the pocket
60 flaps extending across the gap between said re
cessed facing edges with its gummed surface
exposed through said gap for adhesion to a
mount, whereby when the pocket is mounted, the
?brous fabric sheet exposed through the gap and
65 adhering to the mount locks the ?aps and there
by the top wall of the pocket to the mount against
edgewise withdrawal.
5. A mounting pocket comprising a top wall
of transparent sheet material with ?aps of said
70 material folded under and along two sides of the
pocket which are substantially at right angles to
opposite the right angle formed by said folds, 60
said ?aps forming a relatively large opening be
tween their opposite edges under the top‘ wall,
said opening having greater width as measured
at a distance fro-m the open edge of the pocket
than it has adjacent said edge, and a single layer
of gummed ?brous material adhesively secured
to said ?aps extending across the opening between
them with its gummed surface exposed through
said opening for adhesive attachment to a sur
face when the pocket is placed in service.
ALBERT W. ENGEL.
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