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Патент USA US2131401

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Sépt. 2.7, 1938.
w. w. KAfRLEN
COMBINATION SHEET FAS’I‘ENER
2,131,401
BAGKING SHEET
Filed Oct. '7. 1935
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BY
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A
ORNEY.
Patented Sept. 27, 1938
A 2,131,401
UNITED STATESl
2,131,401
COMBINATION SHEET FASTENER AND
BACKING SHEET
Willis W. Karien, Vilas, S. Dak.
Application October 7, 1935, Serial No. 43,969
8 Claims.
tion sheet fasteners and backing sheet with the
compressing bar plate removed.
The principal object of my invention is to pro
vide a means for detachably holding sheets such
as sheets of paper that occupies a minimum of
Fig. 3 is a cross-sectional View of one of my
devices taken on line >3--3 of Fig. 1, and shows
flat space when in use, thereby making for com
one method of attaching the same to a backing UI
5 pactness, neatness, and the conserving of valuable
file cabinet space.
Since the paper backing or folders usually em
~
Fig. 4 is a longitudinal sectional view of my de
ployed in filing correspondence and similar papers
vice taken on line 4--4 of Fig. 1.
' struction in which the paper fastener is con
structed to retain an offset in the paper backing
and at the same time mount the paper fastener
on the paper backing or folder without increas
l
ing the thickness or “build-up” of the folder be
yond the combined thickness of the metal of the
fastener and the paper.
A still further object of my invention is to pro
vide a paper fastener that may be easily, quickly,
20 and rigidly secured to its backing sheet, and when
vice taken on line 8_8 of Fig. 7.
and construction free from undesirable projec
tions or sharpcorners that might accidentally
'
Y
.
_
'
A still further object of my invention is to pro
vide a combination backing sheet and sheet
fastener that has certain depressions and/-or
ridges in the backing sheet for engagement with
30 complementary elements or portions of the sheet
fastener.
2U
Sheet fasteners orl clasps used individually or
catch or snare other items coming in contact
it.
,
Fig; 9 is across-sectional view of my device
taken on> line 9_9 of Fig. '7.
once so attached has a smooth ñat appearance
with
Y
Fig. 5 is a top plan view of o-ne of my sheet fas
teners before attachment to a backing sheet or
like.
Fig. 6 is a side View of one of my sheet fas
teners before attachment to a backing sheet or
like.
Fig. 7 is a top plan View of one end portion of
my device with its bendable arm bent outwardly
and with the compressing bar plate turned over
from its position as shown in Fig. 1.
Fig. 8 isa longitudinal sectional View of the de
is soft and flexible and will not retain offsetting,
10 this invention provides a backing or folder con
25
sheet.
'
A still further object of this invention is to pro
vide a combination sheet fastener and backing
in combination with backing sheets or folders are
indeed well known as they are almost universally
used in every voiîlce, kboth small or large, where
it is desired to p-reserve and secure one or more
sheets together. These clasps or fasteners, how
ever, due to their bulky construction, add much to`
the room required in the ñling cabinets and when 30
several groups of held sheets are piled up ver-A
tically on a desk or like the stack is, highly un-l
balanced and the attached sheets do not lie in
sheet that is exceptionally strong in construction proper flat condition. Another undesirable fea
35 with certain portions of the sheet fastener self
ture of such fasteners is their protrusions, espe- 30
centering with certain portions` of the backingv cially those on the outside of the folder, which
are always >catching on other objects vand which
sheet.
.
prevent the ready withdrawal or replacement
A still further object of this invention is to pro
vide a sheet fastener in combination with an, of the ñlefolders from or into the ñlingcabi
40 especially prepared file folder, file wrapper, back--> net. A still further objection to such fasteners is
ing sheet, or like that is attractive in appearance, their tendency to tear loose from the folder or
economical in manufacture, and durable in use. backing member to which they are attached. I
’I‘hese and other objects will be apparent to have overcome such objections as will be appreci- '
ated by those familiar with sheet fasteners.
those
skilled in the art.
45
Referring to the drawing, I have used the nu
My invention consists in the construction, ar
meral lil to designate the usual folder, file, back
rangement and combination of the Various parts`
of the device, whereby the objects contemplated
are attained as hereinafter more fully set forth,
50 pointed out in my claims and illustrated in th
accompanying drawing, in which:
'
Fig. l is a top plan View of one of my complete
combination sheet fasteners and backing sheet
ready for use.
55
Fig. 2 is a top plan view of one of my combina
ing sheet, `or like, of flexible material such as
cardboard, stiff paper, etc. As is well known,
paper fasteners are secured to such backing sheets
and the sheets to be held are secured by the fas- Y
tener to the front or face of the backing sheet.
My method differsfrom the general custom of f
construction and arrangement of parts, however,
in that I especially prepareor construct the back
ing sheet for the reception of the fastener. This
55
2,131,401
consists in embossing the backing sheet and
piercing it. This embossed depression or recess
is in the back of the backing sheet, as shown in
Figs. 1, 2, 3, and 4, and I have designated it by
CTI
the numeral II. In this embossed depression II
may be a longitudinal slot I2, as shown in Figs.
2 and 3. Near each end of the depression II is
a slit opening I3. It is to such a prepared back
incr sheet that I attach my sheet fastener and
which I will now describe.
’
I have used the numeral I4 to designate the
elongated comparatively flat base body portion
of my fastener. This portion I4 has its corners
rounded in order to eliminate any catching pro
jections and has dimensions similar but slightly
smaller than that of the dimensions of the em
bossed depression I I. The reason for this is that
this body portion is designed to- rest within the
depression II of the backing sheet when on the`
backing sheet. By such a construction the out
side face of the body I4 will be substantially flush
with the back outside face of the backing sheet.
This provides a smooth, uniform surface over the
back of the backing sheet.
Y
The numerals I5 and I6 designate the usual
bendable arms extending from the two ends of
the base I4, respectively. As is well known such
arms extend through the backing sheet from its
back side to detachably engage the sheets to be
held. In the drawing, these arms extend through
the backing sheet by passing through the two
slits I3. The numeral I 'I designates a longitu
dinal ridge extending down the center line of
the base I4,
When the sheet fastener is on the backing
sheet this ridge I'I extends upwardly and into
the slot I2 of the backing sheet. This ridge
obviously strengthens the base bar I4 and aids
I_n centering the sheet fastener properly on the
backing sheet at time of installation.
Any suitable means may be used to rigidly
the two arms I5 and I6. Extending between
these two slits 20 is a longitudinal trough 2|.
Extending from each of the slits 20 to the ex
treme end of the bar plate is a trough 22. The
trough 2I is conversely arranged relative to the
troughs 22 and when the arms I5 and I6 are
bent inwardly as shown in Fig. 1, the trough 2l
is exposed to receive them.
However, when the arms I5 and I6 are bent out
wardly as shown in Fig. '7, the plate I9 is turned
over. in order that the troughs 22 will be exposed
to receive the arms I5 and I6, respectively.
When the fastener base is constructed' and
mounted in the folder or backing sheet as shown
in Figs. 2 and 5, the attachment of the fastener
base to the backing sheet along opposite sides at
spaced intervals throughout the length of the
base of the fastener, provides such a connection
between the fastener base and the folder; that in
the use of the usual bendable sheet metal em
20
ployed for making fasteners, the bending of the
fastener base in the use of the backing sheet with
correspondence papers filed on the front face
thereof, will not cause the central portion of the
base oneither side to become separated from the 25
backing sheet so as to project rearwardly from
the sheet and provide an objectionable projection
at the back of the folder or backing sheet that will
cause one set of bound papers when being placed
in or removed from a ñle drawer'to catch on an 30.
adjacent and similarly constructed set of bound
papers. 'I'he manner of securing the fastener
base to the backing sheet therefore retains inti
mate contact between the backing sheet and the
fastener base throughout its length and around its 35
entire margin and with particular reference to
the construction shown in Fig. 5, the extension
of the prongs through the backing sheet from the
back to the front and then outwardly over the
front face of the backing sheet provides a particu 40
larly desirable construction because where there
is any tendency for any part of another folder or
secure my sheet fastener portion to my backing
sheet, although it is understood that in some . fastener to catch on the fastener base, the secur
instances it may not be desirable to so perma
ing projections will help to guide such other
nently secure it. In Fig. 2, I sho-w the base bar
I4 secured by the conventional burr rivets I8.
These burr rivets are each formed in the bar I4
by cutting a cross, bending the resulting four
prongs upwardly, having them pierce the back
ing sheet, and then riveting them. When riveted
they add no additional thickness, but do rigidly
secure the sheet fastener to the backing sheet.
In Figs. 3, 5, and 6, I show the bar I4 secured by
fastener over the rear smooth face of the fastener 45
and folder. In this way the likelihood of one
backing sheet and one thickness of the sheet metal
forming the fastener in securing the fastener to
tongues or prongs I8’ formed on the side mar
the backing sheet or folder.
gina] edges of the bar I4 and designed to pierce
and clamp onto the backing sheet. When plac
ing the bar I4 these prong projecting tongues
may be bent upwardly to pass through the back
ing sheet and then bent outwardly, as shown in
60 Fig. 3. When these members I 8’ are bent out
wardly they not only provide a very flat con
struction, but tend to maintain the embossing.
From the above it will be seen that I have
provided a very thin combined sheet fastener and
backing sheet, as the ridge I‘I merely comes to
the upper embossed surface of the backing sheet
as shown in Fig. 3. The sheets to be held are
threaded onto the arms I5 and I6 in the usual
manner. They may be bent inwardly as shown
70 in Fig. l, or bent outwardly as shown in Fig.- 7 .
I have provided a novel compression bar plate
I9 that may be used with the device when de
sired and which lends itself to the bending of
the arms I5 and I6 either outwardly or inwardly.
75 This bar plate has the usual two slits 20 to receive
folder catching on another is substantially obvi
ated.
The outwardly extending projections ' of
the structure, as shown in Fig. 5, effectively retain
the embossment in the paper backing without
increasing the thickness of the paper forming the
.
Some changes may be made in the construction
and arrangement of my improved combination
sheet fastener and backing sheet without depart
ing from the real spirit and purpose of my inven
tion, and it is my intention to cover by my claims
any modified forms of structure or use of mechan
60
ical equivalents which may be reasonably included
within their scope.
I claim:
~
I
1. In combination with a backing sheet element
having an embossed depression and an elongated 65
slot opening extending through it and communi
eating with said embossed depression, a sheet
fastener comprising a base portion, a ridge por
tion on said base portion extending into and en
gaging said slot opening in said backing sheet ele
ment, and a sheet engaging means on said base
portion.
.
2. In combination with a single backing sheet
element having an embossed depression in one of
itsv sides and an opening extending through it> and
70
3
2,131,401
communicating with said embossed depression, a
sheet fastener comprising a base element resting
in said embossed depression, a projection on said
base element extending into said opening in said
backing sheet element, and bendable arms on said
base element extending through said backing
sheet element.
3. In combination with a single backing sheet
having a depressed area portion and an elongated
10 slot opening extending through it and communi
cating with said depressed area portion, a sheet
fastener comprising, a base portion, a ridge on
said base portion extending into and engaging said
slot opening in said backing sheet, bendable mem
15 bers on said base portion extending through said
backing sheet for holding said base portion in said
depressed area portion, and bendable sheet en
gaging arms on said base portion.
4. A paper filing device, comprising a backing
20 member formed of a single sheet of material, a
section of said member being offset to one side
thereof and forming a recess in the opposite side,
a bendable prong fastener formed of sheet metal
having a base portion seated in said recess against
25 said section, retaining projections on said base
portion extending outwardly therefrom through
said sheet at the juncture of said section with the
remainder of said sheet with the ends overlying
the opposite face of the sheet beyond said section
30 for retaining said base portion in said recess, and
bendable prongs on said base portion extending
through said sheet of material for impaling
papers on the opposite side of the backing mem
ber, whereby the composite thickness of said de
35 vice at any point does not exceed that of the
paper sheet plus the thickness of the metal form
ing said fastener base, and said offset section co
operates in facilitating the mounting of said
fastener base on said sheet and provides a smooth
back surface on said backing member to prevent
catching of papers and fasteners when one device
is slid over another.
5. A paper filing device, comprising a backing
member formed of flexible sheet material, a sec
tion of said member being offset to one side
member formed -of flexible sheet material,a sec
tion of said member being offset to one side
thereof and Vforming a recess in the opposite
side, a bendable prong fastener having a base en
gaged in said recess with bendable paper impal
ing prongs extending` through said backing
member for impaling papers on the side opposite
said base and projections at spaced intervals
around the edge of said base extending outwardly
therefrom through and outwardly over the op 1o
posite face of said backing member for securing
substantially all» portions of said base against
separation from said backing member and re
taining said embossed portion in said backing
member without increase in the composite thick 15
ness of said device at any point greater than one
thickness of said backing sheet plus one thick
ness Vof the material forming said fastener.
7. A paper filing device, comprising a backing
member formed of sheet material, a section of 20
said material being offset to one side thereof and
forming a recess in the opposite side, a bendable
prong fastener having a base engaged in said
recess with the margins of said base and the
portions of said backing member connecting said 25
offset section to the-remainder thereof in con
tiguous relation, a pair of bendable paper impal
ing prongs on said base arranged one at each
end projecting through said backing member for
binding papers on the opposite side of said base, 30
and a plurality of projections spaced along each
side edge of said base extending outwardly from'
said base through the portions of said backing
member connecting said offset section to the
remainder thereof and outwardly, over the oppo 35
site face of said backing member beyond said
offset section, for retaining said offset section
in offset relation and intimate contact between
said base and offset section throughout all por
tions thereof.
Y
'
8. A paper filing device, comprising a backing
member formed of flexible sheet material, >and a
40
bendable prong fastener formed of bendable
sheet metal having a base portion with one face
engaging one surface Vof said backing member, 45
thereof and forming a recess in the oppositeV .bendable paper impaling means on said base
side, a bendable prong fastener having a base portion, said backing member having a slot
engaged in said recess with bendable paper im
formed therein, an offset portion on said base
paling prongs extending through said backing
member for impaling papers on the side oppo
50 site said base, and attaching means extending>
outwardly in opposite directions at the margin
of said fastener base having cooperative engage
ment with said backing member for securing said
fastener base to said backing member to retain
55
intimate contact between all portions thereof
and for also retaining said section in said offset
relation without increasing the composite thick
ness of said device at any point more than the -
thickness of said sheet material plus the thick
ness of the material forming said base.
6. A paper :tiling device, comprising a backing
portion engaging in said slot, and a plurality'of
projections on the side edges of said base por
tion extending through said backing memberand
50
outwardly from said base portion over the oppo
site face of `said backing member to retain all
portions of said base in intimate relation with
said backing member and prevent one device 55
from catching on an adjacent one', without in
creasing the composite thickness of‘said device
to an extent greater than the thickness of said
sheet metal plus the thickness of said sheet ma
terial.
60
WILLIS W. KARLEN.
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