U.S. patent number 3,760,521 [Application Number 05/119,219] was granted by the patent office on 1973-09-25 for showcase.
Invention is credited to Pierre Charles Henri Barraya.
United States Patent |
3,760,521 |
Barraya |
September 25, 1973 |
SHOWCASE
Abstract
A showcase for documents, photographs and the like is formed by
a straight sided transparent prismatic case with triangular bases
formed by triangles whose three angles are acute and at least one
base of which case is open, but may be closed by a removable cover
to permit the positioning against the inner lateral faces of said
case of photographs, engravings or other documents, rigid or
rendered rigid, of a format adapted to the surface of said faces
and with the holding in position of each such document against its
respective case face being assured by the other two adjacent faces
of the case forming acute angles therewith.
Inventors: |
Barraya; Pierre Charles Henri
(Paris, FR) |
Family
ID: |
9051415 |
Appl.
No.: |
05/119,219 |
Filed: |
February 26, 1971 |
Foreign Application Priority Data
Current U.S.
Class: |
40/720; D6/661;
D11/145; 40/661; 40/737 |
Current CPC
Class: |
G09F
1/14 (20130101); A47G 1/14 (20130101); G09F
1/12 (20130101); A47G 2001/145 (20130101) |
Current International
Class: |
A47G
1/14 (20060101); A47G 1/00 (20060101); G09F
1/12 (20060101); G09F 1/00 (20060101); G09F
1/14 (20060101); G09f 001/12 () |
Field of
Search: |
;40/152,10,1D,156,154 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Michell; Robert W.
Assistant Examiner: Contreras; Wenceslao J.
Claims
I claim:
1. A showcase for documents comprising a transparent hollow prism
shaped case having side walls each with inner and outer straight
surfaces and with each of said inner an outer wall surfaces
extending on an acute angle to the corresponding surfaces of an
adjacent wall, said case also having triangular bases formed by
triangles whose three angles are acute and at least one of said
bases being open whereby a document can be inserted through said
open base and one face of the document positioned flat against said
wall inner surfaces and retained flat against each wall inner face
by the other two adjacent wall inner surfaces forming acute-angle
dihedrals with said inner face, and a core of circular
cross-section positioned within said case between and spaced from
said wall inner surfaces and extending between said bases whereby
the opposite face of the inserted document is maintained in
position by the generatrix of said core.
2. A showcase according to claim 1, wherein said core delimits with
each of said wall inner surfaces of said case a space narrowing in
the direction of the insertion of the document to bring about a
pinching of said document when fully introduced.
3. A showcase according to claim 1, wherein said core is
cylindrical.
4. A showcase according to claim 1, wherein said core is a
truncated cone-shaped central core whose great diameter is arranged
facing the open base of said case, said core delimits with each of
the inner face of said case a space narrowing toward the large base
of said core to bring about a pinching of the document when fully
introduced;
5. A showcase for documents as claimed in claim 1 wherein said core
has one end integral with the other of said bases.
6. A showcase according to claim 5, wherein said core has a central
portion which is hollow and opens through said other base.
Description
The present invention relates to a showcase for documents,
photographs and the like, characterized in that it is formed by a
hollow prism, of transparent material, of the straight sided type
with triangular, preferably equilateral bases, or formed by
triangles with acute angles, at lease one of which is open, but may
be closed by a removable cover, to permit the engagement, against
the inner lateral faces of said prism, of photographs, engravings
or other documents, rigid or rendered rigid with the holding in
position of each of said documents against its respective face of
the case is assured by the two other adjacent faces of the case
forming acute-angle therebetween.
In the case of insufficiently rigid documents susceptible of
bending, the prism case of transparent faces is combined with an
inner core of suitable form, leaving between said faces and the
periphery of said core a space equal to or slightly greater than
the thickness of the documents, photographs or the like to be
displayed.
According to a modification, said inner core is arranged so that
the useful space which it defines with the walls of the prism
gradually diminishes in the direction of the penetration of the
document so as to obtain a pinching of the edge of the latter when
fully inserted.
In both bases, the central core of the prism may be hollow to form
a receptacle to hold various objects.
According to a simple embodiment permitting the use of rigid
photographs or which have been rendered rigid by any known means,
the showcase is formed by a straight sided primatic case of
transparent plastic material, molded under pressure for example,
having two parallel equilateral triangular bases, one of which is
open to permit the introduction of documents, photographs or the
like against its inner lateral faces with said documents or
photographs having a format equal to or very slightly less than
that of said case faces.
According to a conception more particularly intended for thin, and
hence flexible documents, the prismatic case includes, either
molded directly in one piece with it or added by gluing or welding,
a cylindrical central core which extends over its entire height and
whose exterior diameter is slightly less than a circle inscribed
between the sides of the case triangular bases.
According to a modification, the core is slightly conical, and has
its great diameter, placed on the side opposite to the opening of
the case, being slightly less than a circle which can be inscribed
on the bases of said case.
The invention will be understood by the following description and
with reference to the annexed drawing, in which:
FIG. 1 is a perspective view of a showcase according to the
invention, more particularly intended for rigid photographs or the
like;
FIG. 2 is a transverse section of FIG. 1;
FIG. 3 is a perspective view of a showcase according to the
invention adapted to assure the correct holding of flexible
documents;
FIG. 4 is a vertical section of FIG. 3; and
FIG. 5 is a horizontal section of FIG. 4.
Referring to the drawing, the showcase of the invention, intended
for the exhibition of documents, photographs or the like, is formed
by a straight sided prismatic case 1, with triangular bases 2,
equilateral in the example chosen, at least one base of which is
open but may be closed by a removable cover (not shown). Said case
is made of transparent plastic material and able to receive three
photographs P, naturally rigid or rendered rigid for example by
pasting the back thereof. The photographs are placed against the
inner surface of the case lateral faces and adhers thereto or is
retained by being wedged between the acute angles formed by the
other two adjacent faces of the case.
It is clear that to obtain the aforesaid wedging of each
photograph, the triangular section of each corner of the case must
now have an angle equal to or greater than 90.degree..
If the documents to be exhibited are thin, and hence rather
flexible, the prismatic case is internally provided with a
cylindrical central core 3 adjoining the base opposite that which
forms the opening of the assembly with said core having an exterior
diameter slightly less than the largest circle capable of being
inscribed on one of said bases so as to leave between said core and
the faces of the prism a space 4 equal to or slightly greater than
the thickness of the photographed enclosed therein, see FIGS. 3 to
5.
This arrangement thus prevents any deformation of the photograph or
the like by median bending.
According to a modification susceptible of positively assuring the
holding of thin photographs or pictures, core 3 has a certain
conicity causing the progressive narrowing of space 4 so as to
bring about the pinching of the lead edge of the document when
fully introduced. The great diameter of said core being, for this
purpose, very slightly less than said inscribed circle.
Lastly, in both cases, the cylindrical or truncated cone-shaped
core, is molded directly onto one of the bases of the prism or
added by gluing or welding and is preferably hollow as at 5 to form
a container for lodging various objects therein when the assembly
is placed vertically on the opposite base.
Such a showcase, and in particular the one shown in FIG. 1, may, of
course, also be disposed so as to rest on one of its three
rectangular lateral faces.
The present invention is not limited to the form of construction
described and represented but extends, on the contrary, to all
variants of forms, material and dimensions.
The term "document" as used herein is meant to describe any sheet
like object.
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