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Патент USA US2129224

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Sept-6, 1938.
A. M. MARTIN
LOOSE LEAF DEVICE
Filed Feb. 1, 1935
2,129,224
I
2 Sheets-Sheet 2
2,129,224
Patented Sept. 6, 1938
UNITED STATES FATENT OFFICE
2,129,224
LOOSE LEAF DEVICE
Alfred M. Martin, Park Ridge, Ill.
Application February 1, 1935, Serial No. 4,507
9 Claims. (01. 129-17)
This invention relates to loose-leaf devices more
particularly of the binder type including prong
holding means in the form of a. toggle device and
a supporting member such as a binder back pro
5 viding a support for the toggle for free movement
thereon.
Binders of this type which are generally of large
size, should be easily manipulated to close or
spread the prongs and should at the same time
10 provide a ?rm and non-collapsible support for
the leaves to be written upon, while a?ording a
writing surface as flat as possible. Heretofore
these objects have been sought in some instances
by maintaining the support or binder back against
15, tilting and, in other instances, by permitting the
support or binder back to tilt. In each case,
whether with the tilting or non-tilting support,
it has been important to prevent collapsing of the
support. Supporting means of the ?rst-mew
20 tioned type is disclosed in my Patent No. 1,722,810
of July 30, 1929; and in my copending application
Serial No. 752,219 ?led November 9, 1934., I have
described and claimed an improved device of the
tilting type.
My present improvement, among other objects,
25
aims to combine advantages of both the non-tilt
ing and the tilting types referred to and thus re
taining the greater advantages in stability and
?exibility peculiar to each type.
Other objects and advantages will be apparent
30
from the following description taken together
with the accompanying drawings, in which
Figure 1 is a partial end view of a binder con
structed in accordance with my invention, the
35 binder being shown in‘closed position;
Figure 2 is an end view of the binder of Fig. 1
in normally open position for the making of
entries on the loose-leaf sheets or for reference
thereto;
40 Figure 3 is a similar view of the binder in nor
mally open position for the removal or insertion
of sheets; and
Figure 4 is a similar view of the binder in ex
5
treme open position.
Referring in detail to the illustrative construc
tion shown in the drawings, I have indicated, in
general, a binder ID of the class described, it being
su?icient for present purposes and for those skilled
in the art, to show only that portion of the binder
which includes the leaf or sheet-engaging means
such as the prongs, and the support or hinder back
which supports the prongs for movement thereof
when the binder is open. Furthermore, it is
55‘; deemed su?icient to show merely end views of the
construction referred to, as these best illustrate
my novel improvement, and it will be understood
that the corresponding plan views, if shown, would
in general depict the usual book formation.
In accordance with my present invention, the 5
improved construction includes broadly, a binder
back embodying an inner normally trough-like
element H and an outer normally trough-like
element l2, these two elements, as shown in Figs.
1 and 2 being in telescoping or nesting relation, 10
the element l I constituting the means for directly
carrying the leaf-impaling prongs I3, l4 and the
element l2 constituting the support therefor, and
in this instance, the binder back proper.
The element l2 in this instance constituting 15
the binder back proper is, in accordance with my
invention, formed of two angularly displaceable
sections such as the metallic members [5, extend
ing longitudinally of the binder back, that is, away
from the observer referring to the views of the 20
drawings. Each of these members l5 has, in
this instance, an upright portion [6 and an in
tegral portion ll’ extending at right angles to
the portion IS, the portions ll of each member
extending toward each other, normally in a com
25
mon plane, to meet adjacent a median line run
ning longitudinally of the binder back. Each of
the said angular portions provides a base for the
binder extending for a material distance trans
versely of the binder back. The angle between 30
the portions I6, I l as at l8 desirably forms a
relatively sharp, square corner for purposes pres
ently pointed out, this corner being relatively
sharp and. square in the sense that it is a right
angle but being exteriorly slightly rounded by 35
reason of the resilient facing 22 to permit rota
tion on the table top or the like 23. Secured to
each of the portions I1 is a hinge-leaf l9 also
extending, in effect, longitudinally of the binder,
each of these hinge-leaves having alined hinge 40
lugs 20 through which is passed the usual hinge
rod or pintle 2| thus ?exibly connecting the angu
lar members 15 medially of the binder back for
free relative angular movement of these members. In this instance, the members l5 are per 45
mitted relative angular movement on the hinge 2 I ,
so that these members may move about the hinge
as a pivot in either direction. By this is meant
that the hinge may be either buckled upwardly
as shown in Fig. 2, in which event the hinge 21 is
disposed on one side of a plane passing through
the corners 18, or, as shown in Fig. 4, the members
I5 may be buckled in the opposite direction so
that the hinge is disposed upon the opposite side
of a plane passing through these corners. Under 55
2
2,129,224.
some circumstances, it might be desirable to limit
relative angular rotation of the members l5, as
will be readily understood. These members, are
desirably faced with leather or ?ber, as at 22, to
prevent scratching of the tabletop 23, the facings
22 being spaced apart as at 24 in the vicinity of
the hinge 2! so as to avoid interference with the
hinge, but being desirably of suf?cient thickness
so as to be ?ush with the hinge-lugs 29, thus pro
10 viding that the members | 5, in effect, may rest
?rmly upon the tabletop or other working surface
23 with the portions |'| parallel therewith as
the hinges 30, to move laterally in a direction
apart. In accordance with my invention, such
spreading movement of the toggle device is per
mitted by my novel provision for hinging the
supporting members l5 of the binder back l2 at
2|, thus permitting the supporting members IE
to have relative angular movement which spreads
them apart correspondingly in the vicinity of the
upright portions l6 upon which the hinges 30 are
carried. Further to accommodate this movement, 10
the corners l8 may move slightly inwardly in a
direction towards each other on the tabletop 23.
The toggle is thus supported for free movement of
shown in some of the views of the drawings.
The element H, as here shown, is the usual
its medial hinge 26, the hinge 2| of the supporting
toggle device similar to the corresponding ele-_
ment shown in my prior disclosures above re
ferred to and also includes two complementary
means being responsive to the movement of the
toggle and permitting the supporting means to
automatically adjust itself to the movement of
members 25 medially hinged as. at 26 upon a
hinge-pin parallel with the hinge-pin 2| and also
20 each having the normally upright portion 21 and
right-angularly directed portions 28 which meet
adjacent the common plane of the hinges 2| and
26, the portions 28 being advantageously of box
t the toggle.
The parts as shown are so balanced
and the movement of the corners l8 on the table
top is so slight that little effort is required to 20
spread the prongs apart to the position shown in
Fig. 2. At the same time the parts are in stable
equilibrium and non-collapsible, so that any nor
mal amount of pressure may be placed upon either
like formation, for one purpose, for housing any
suitable looking or catch mechanism which may
side of the record leaves Without causing the
be employed, to prevent, until released, relative
angular rotation of the parts. Also since the
son ensuring a ?rm, smooth, writing surface. Any
parts 28 are of box-like formation, the members
25 of the toggle device can be buckled in only
30. one direction, that is upwardly, or away from
element l2, thus preventing collapse of the struc
ture.
Further in accordance with my present inven
tion, the elements ||, l2 are ?exibly connected
at their outer edges, in this instance by alined
hinge-lugs 29 some of which are formed inte
grally with the portions l5 of the members l5
and some formed integrally with the parts. 2’! of
the element II, the usual hinge-pins 30 rotatably
40 connecting the parts together, on lines parallel
binder back to tilt or move around, for this rea
downward pressure exerted on a hinge 34 of one
of the covers laterally outwardly of the base or
binder-back member which might tend to cause 30
the adjacent member vI5 to rotate, is counter
acted by the opposite member l5. which tends to
resist further upward movement of the hinge 2|,
due not only to its own weight but also to the
weight of the toggle device and the record leaves
thereon.
-
When it is desired to remove or insert record
sheets 32, by a relatively slight e?ort the prongs
l3, l4 may be further rotated to spread them com
with the hinges 2| and 26.
'One set of sheet-impaling prongs I3, which
pletely apart as shown in Fig. 3. During this 40
movement, the toggle device is buckled still fur
ther upwardly, the medial hinge 25 moving in this
may be appropriately spaced apart longitudinally
same upward direction to a point where it is
of the binder back, are carried by a bar 3| suit
spaced a materially great distance above the
hinge 2|. During this movement also the outer 451
edges of the toggle device are permitted to move
laterally in a direction apart to their maximum
distance, the upright portions l6 of the support~
ing means moving correspondingly apart, where
upon after having reached its maximum spread,
the toggle device will again contract in the sense
. ably secured to one of the parts 21 of the toggle.
The other, set of prongs I4 are similarly carried
by the other part 21, the prongs |3, |4 being
staggered longitudinally of the binder back so
as to be moved into and out of overlapping posi
tion as shown in Figs. 1 and 2, and being desirably
curved on an arcuation substantially concentric
with the hinge 28. Thus the leaves or other rec
ord sheets 32 may substantially ?ll the binder
extending from end to end of the prongs, as
- shown in Fig. 1.
The usual stiif covers 33 are provided which, as
here shown, are desirably hinged at 34 (parallel
with the other hinges mentioned) on the parts 25
respectively of the toggle device.
The operation of my present improvement is as
follows:
In the position shown in Fig. 1, the binder is
ready to be opened for any purpose. In this posi
tion, both parts I‘! of the back members l5 are
parallel with the tabletop and rest squarely there
on, thus providing a ?rm support for the re
mainder of the binder.
Upon opening the binder, the prongs l3, l4
may be permitted to come into less overlapped re
70 lation, as seen in Fig. 2, thus a?ording flatter sur
faces 36 upon the uppermost leaves or sheets 32,
facilitating reference to the sheets or writing
thereupon.
To permit the prongs to move in a
direction apart, the toggle' mechanism H is
lbuckled upwardly causing its outer edges, as at
that the hinge-points 3|] connecting the toggle
device and the supporting means will move later
ally inwardly. When this has occurred, the mem
bers | 5 of the supporting means will be rotated in
a direction opposite to that ?rst described for
them, so that the hinge 2| of the binder back is
moved downwardly until it reaches the tabletop
whereupon the parts I? of the supporting mem
bers I5 will be flat or parallel with the tabletop
(Fig. 3).
This being the position of greatest
stability for the supporting means, an unusually
firm and non-collapsible support is provided for
the leaves 32 during the critical steps of removing
leaves from the prongs or impaling leaves thereon.
Also if the binder be of the type in which one of
the toggle parts may move longitudinally with
respect to the other, on its respective hinges, in
accordance with the well-known shift type of.
binder, a markedly ?rm support is provided for
this operation which is usually performed in the
position of the binder shown in Fig. 3. Any nor
mal weight may be placed upon either'side of the
binder in this position without causing the back
members l5 to rotate or collapse since the parts 75"
2,129,224
3
counterbalance each other and the squarecorners
l8 further resist any turning movement of the
members, each comprising an upright portionand
a portion angular thereto, the latter portion of
supporting members.
each member being directed toward the other, a
hinge connecting the said latter portions, and
‘
When, for example, a majority of the leaves 32
are ‘all on one side of the binder and it may be
desired to remove a large number-of :sheets at one
time, this can best be done by spreading the prongs
l3, I4 still farther apart to the position. ‘shownin
Fig. 4. In this position the toggle device is buck
10 led upwardly to its extreme limit ‘Where normally
prong-carrying means in the form of a two-part
medially hinged toggle pivoted on both said up
rightportions for free movement of the medial
hinge, relative angular movement of the sup
porting members being responsive to movement
of the toggle and the hinge of the supporting 10
upright portions 23 of the toggle device assume a
transverse relation substantially in a common
plane, this movement requiring‘still further con—
traction of the outer edges of the toggle device
represented by the hinges 30. This extreme con
members being free to buckle on either side of a
traction is permitted, ‘by my present improvement,
by the fully ?exible connection represented by the
hinge 2| between the supporting members 15. In
other words, as shownin Fig. 4, the supporting
back for relative angular movement of the mem
bers,.a set of ‘prongs for each of said members in
parallel arrangement, each set of prongs being in
dividually pivotally mounted on a longitudinal
element l2 consisting of the two .angularly mov
able members 15 is permitted to buckle in'the
opposite direction to that shown in Fig. 2, so that
the hinge 2| is on the opposite side ‘of a- plane
passing through the corners i8. ‘As clearlylshown
in Fig. 4, the supporting means still remains en
axis on said members respectively, and means 20
connected ‘with said prongs serving when one set
of prongs is swung‘ upwardly and outwardly with
respect ‘to the other set to give said members a
slight relative angular movement to cause the
medial hinge of the members to move upwardly. 25
tirely stable, however, contrary to what might at
?rst be expected, since what actually happens is
that one “of the angular members 15, that is, the
the combination with a trough-shape binder back,
plane common to the said angular portions.
2. In a loose-leaf binder, the combination in
cluding a binder back embodying two supporting
members hinged together medially of the binder 15
- 3. .In-‘a loose-leaf binder of the class described,
of prong-holding means in the form of a trough
one adjacent the largest number of leaves, re
30 mains unmoved and in a ?rm, square position
shape toggle device normally nested within the
upon the tabletop, thus itself providing the desired
rigid support for the side of the binder upon
which the greatest weight is sustained; the other
corresponding member i5, upon the side of the
binder carrying at this time relatively no weight,
prising means for supporting the toggle for free
movement of the medial hinge, said means in
cluding a pair of supporting members carrying the
is permitted to rotate on the hinge 2| so that its
upper edge, represented by the hinge 3!], follows
the movement of the adjacent edge of the toggle
device, the other edge of the toggle device being
40 held relatively stationary by the opposite member
I5 which remains stationary, it being su?icient, as
will be readily understood, that the outer edges of
the toggle device have relative movement and it
being not necessary that both edges of the toggle
device move to permit the buckling of the toggle
device as described. A still further advantage
may be derived from the position of the parts
~shown in Fig. 4, and that is that when a large
number of the sheets are upon one side of the
50 binder as shown in this ?gure, the flatness of the
upper sheet may be enhanced by buckling the
toggle and supporting member as shown. It will
be understood, however, that such extreme buck
ling of the parts is not usually necessary as sheets
can be readily removed and inserted, and also
written upon, with ease and comfort when the
parts are in the position shown in Fig. 3.
It will be further understood that the cover
members 33, which are of stiff construction, ex
(30 tend in their full length, to the tabletop 23, and
further contribute to providing a flat writing sur
face on the leaves.
In my co-pending application Serial No. 543,
374, ?led June 10, 1931, I claim broadly the pivot
ing of prong holding means on a support at a
point apart from the pivot point of the prong
back and having a medial hinge, said back com
30
toggle device, hinge connections between the tog
gle and said supporting members at their upper 35
outer sides respectively, and a hinge operatively
connecting said members medially of the binder
back whereby the supporting members are free
to move angularly but relatively of the toggle
device in response to movements of the medial 40
hinge of the toggle.
4. In a loose-leaf binder, the combination in
cluding a binder back embodying two internested
normally trough-like elements ?exibly connected
at their outer edges, each comprising a pair of 45
right-angular members, each member having
rigid portions forming between them a relatively
sharp square corner and each element having its
respective members hinged together medially of
the binder back for free relative angular move 50
ment whereby the elements may be buckled into
and out of internested relation and the medial
hinges may move in the same or opposite direc
tions responsive to relative movements of the said
55
elements.
5. In a loose-leaf binder, the combination in
cluding a binder back embodying two internested
normally trough-like elements ?exibly connected
at their outer edges, each comprising a pair of
right-angular members, each member having 60
rigid portions forming between them a relatively
sharp square corner and each element having its
respective members hinged together medially of
the binder back for free relative angular move
ment whereby the elements may be buckled into 65
and out of internested relation and the hinges
holding means and the binder cover, and in my
may move in the same or opposite directions re
copending application Serial No. 752,219, ?led
November 9, 1934, I claim the pivoting of the
sponsive to relative movements of the said ele
ments, a set of curved prongs carried by each of
the members of the inner element concentrically 70
with the hinge individual thereto, and a cover
hinged to each of said members of the inner ele
ment.
6. In a loose-leaf device, a jointly trough-shape
70 prong carrying means intermedially to a support
whereby the prong carrying means is intermedi
ally fulcrumed thereon.
Having described my invention, I claim:
1. In a loose-leaf binder, the combination in
cluding a binder back embodying two supporting
pair of angular directly connected relatively 75
4
angularly
2,129,224
displaceable
supporting
members,
members, at least one of said members having a
angularly displaceable sheet-engaging means
normally upright portion and another portion ex—
tending rigidly toward the other of said members,
and a normally trough-shape toggle device nor
pivoted to said members at each side thereof, a
connection between said means so that movement
of the means on one side causes movement of the
means on the'other side, said members being
angularly adjustable in response to movements
of the sheet-engaging means, and a pair of covers
one hinged directly to each of the sheet-engaging
10 means apart from the pivots of the said. means
on said members.
'7. In a loose-leaf device, the combination in
cluding a trough-shape binder back comprising
two angularly formed back sections pivoted to
15 gether medially of the binder back, and trough
shape sheet-engaging means in the form of a two
part toggle device hinged at each side to one of
mally nested within the supporting members 5
pivotally connected at both sides to said members,
said members being automatically angularly ad
justable in response to movements of the toggle
device.
1
.
9. In a loose-leaf binder of the class: described, 10
the combination with a trough-shape binder back,
of prong-holding means in the form of a trough
shape toggle device normally nested within the
back and having a medial hinge, said back com
prising means for supporting the toggle for free 15
movement of the medial hinge, said means in
cluding a pair of supporting members carrying the
said sections and normally nested therein, said toggle device, hinge connections between the tog
toggle device having a medial hinge parallel with gle and said supporting members at their upper
the hinge of the back sections, both said hinges outer sides respectively, and a single hinge opera 20.
being freely movable transversely of the binder - tively connecting said members whereby the sup
back in either direction, and said sections being porting members are free to move angularly but
angularly movable in response to movements of
the medial hinges.
8. In a loose-leaf device, a jointly trough-shape
25
pair of relatively rotatably connected supporting
relatively of the toggle device in response to move
ments of the medial hinge of the toggle.
25
ALFRED M. MARTIN.
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