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Патент USA US2117265

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May 17, 1938‘.
2,117,265
|_. L. ALLYN
BINDER ‘OR LOOSE SHEET HOLDER
Filed March 13, 1937
W
INVENTOR.
Zea/7 Zl. ?//7/7
MATTORNEYS
2,117,265
Patented May 17, 1938
UNITED STATES PATENT OFFICE
2,117,265
BINDER OR LOOSE SHEET‘ HOLDER
Leon L. Allyn, Kalamazoo, Mich, assignor to
Master-Craft Corporation, Kalamazoo, Mich.
Application March 13, 1937, Serial No. 130,670
8 Claims. (Cl. 129-41)
This invention relates to improvements in
binders or loose sheet holders.
The main objects of this invention are:
First, to provide a binder or loose sheet holder
5 which may be very quickly adjusted to sheet
clamping position and easily released, even when
the binding members are under substantial stress.
Second, to provide a binder or loose sheet holder
embodying these advantages which is simple in
10 its parts and capable of being embodied in bind
crs or sheet holders of various sizes.
Objects pertaining to details and economies of
my invention will de?nitely appear from the de
scription to follow.
The invention is pointed out
15 in the claims.
A structure which embodies the features of my
invention is clearly illustrated in the accompany
ing drawing forming part of this application in
which:
Fig. 1 is an inside fragmentary View of a binder
or sheet holder embodying the features of my
invention with the covers in open position, the
binding means being partially open.
Fig. 2 is a fragmentary inverted view of the ad
25 justing mechanism removed from the cover.
Fig. 3 is an enlarged fragmentary plan view
with parts in ratcheting holding position.
Fig. 4 is an enlarged fragmentary view showing
the pawl in released position in full lines and ad
30 justed to reversing position by dotted lines.
Fig. 5 is a fragmentary view mainly in section
on line 5-5 of Fig. 3.
The embodiment of my invention illustrated
comprises covers I and 2 provided with sheet
20 U! clamping members 3, the cover I having a recess
or chamber ll on its inner side. The binding
members 5 in this embodiment are in the form of
?exible tapes or straps connected to one cover
40
and adjustably connected to the other cover
through the adjusting means provided therefor.
This adjusting means comprises a ratchet bar
8 mounted longitudinally of the cover I within
the chamber or recess 4 and the adjusting mem
ber l‘ in the form of a cross bar to the ends of
which the binding members 5 are secured. The
adjusting member is slidably mounted on the
ratchet bar.
I am aware that binders of this general type
are old in the art, for example, in the patent to
Wiggintcn No. 1,010,556, issued December 5, 1911.
The adjusting member ‘I is provided with a
cammed slot 8 which is disposed in an inclined
relation relative to the ratchet bar, the outer end
of the slot, that is, the end remote from the
5 ratchet bar, being toward the inner end of the
cover.
The pawl 9 is provided with a pivot l0
slidably and pivotally engaging the slot 8 and
having a ?nger piece I l at its outer end by means
of which the pivot may be manually adjusted in
the slot. A reversely bowed or bent spring [2 is U!
mounted on the stud l3 with its free end I4 en
gaging the inner edge of the pawl. The pawl has
a ?attened end portion !5 with which the inter
mediate body portion l6 of the spring engages
when the pawl is in its non-holding position as
shown in Fig. 4, this acting to hold the pawl in
engagement with the ratchet teeth so that on the
outward movement of the adjusting member the
pawl is swung to holding ratcheting position as
15
shown in Figs. 2 and 3.
It will be observed that with the pawl in hold—
ing ratcheting position the pivot is at the inner
end of the slot and the thrust of the pawl is
against the edge of the slot. It is found that the
holding is very effective and that there is no
tendency for the pawl to slip out of position.
The slot preferably is cammed or slightly ir
regular, being provided with an inset at I‘! on
its outer edge and with a slight lug IS on its op
posite edge. These, however, are not absolutely
essential to the operation of the device, but are
of advantage.
'
With the binder adjusted so that the binding
strips are under stress the binder may be very
easily released merely by pulling the pawl pivot
toward the outer end of the slot, and even when
the binder is under heavy stress this can be done
very easily. When this is done the pawl is re
leased from its locking engagement with the
ratchet bar and swings to the position shown in 35
Fig. ll, but as soon as the adjusting member is
pulled outwardly the pawl will reverse itself, the
pivot shifting downwardly to a position indicated
by dotted lines in Fig. 4 until the pawl can shift
or swing to the ratcheting holding position as in 40
dicated in Figs. 2 and 3. This reversing of the
pawl occurs during the ?rst part of the tightening
adjustment of the member 1.
In mechanisms such as the Wigginton patent
referred to, when the binding members are ad
justed to clamping position it is very di?icult to
release the pawl and attempts to do so frequently
result in a broken ?ngernail or the necessity for
using a coin or other object to prevent injury to
the ?ngers.
With my improvements the pawl
may be released, even when the binding members
are under very considerable stress.
I have illustrated and described my invention
in a practical embodiment thereof. I have not
attempted to illustrate or describe other embodi 55
2
2,117,265
ments or adaptations which I contemplate as it is
believed this disclosure will enable those skilled
in the art to embody or adapt my invention as
may be desired.
Having thus described my invention what I
claim as new and desire to secure by Letters
Patent is:
1. In a binder or loose sheet holder, the com
bination with the covers and the binding mem
10 bers, of a ratchet bar disposed longitudinally of
one of the covers, an adjusting member for said
binding members slidable on said ratchet bar and
having a cammed slot disposed in an inwardly
inclined relation to the ratchet bar, a pawl dis
15 posed on the inner side of said adjusting member
and provided with a pivot slidable in said slot
and having a ?nger piece at its outer end, said
pawl having a ?attened inner end, a reversely
curved spring mounted at one end on said ad
20 justing member with its free end coacting with
said pawl and disposed so that its end engages
the inner edge of the pawl when the pawl is in
ratcheting holding position and an intermediate
part of the spring engages the ?attened end of
25 the pawl when the pawl is retracted, the spring
acting to urge the pawl into engagement with
the rack in all positions of the pawl, the angle of
the slot being such that the pawl is out of hold
ing engagement with the ratchet bar when the
30 pivot is shifted to the outer end of the slot.
2. In a binder or loose sheet holder, the combi
nation with the covers and the binding members,
of a ratchet bar disposed longitudinally of one of
the covers. an adjusting member for said binding
members slidable on said ratchet bar and having
a cammed slot disposed in an inwardly inclined
relation to the ratchet bar, a pawl disposed on the
inner side of said adjusting member and provided
with a pivot slidable in said slot and having a
' ?nger piece at its outer end, said pawl lockingly
engaging said ratchet bar when the pivot is at the
inner end of the slot, a spring mounted on said
adjusting member to coact with said pawl, the
spring acting to urge the pawl into engagement
with the rack in all positions of the pawl, the
angle of the slot being such that the pawl is out
of holding engagement with the ratchet bar when
the pivot is shifted to the outer end of the slot.
3. In a binder or loose sheet holder, the com
50 bination with a cover and binding member, of a
ratchet bar disposed longitudinally of one of the
covers, an adjusting member for said binding
member slidable on said ratchet bar and having
a slot disposed in an inwardly inclined relation
55 relative to the ratchet bar, a pawl provided with
a pivot slidable in said slot to lockingly engage
said ratchet bar in inward position of the pivot in
the slot and having a ?nger piece at its outer
end, and a spring acting to urge said pawl to
60 rack engaging position, the angle of the slot
being such that the pawl is out of holding en
gagement with the ratchet bar when the‘ pawl
pivot is shifted outwardly in said slot, the spring
automatically acting to engage the pawl when
65 the pawl pivot is released.
4. In a binder or loose sheet holder, the com
bination with a binding member, of a ratchet bar,
an adjusting member for said binding member
slidably associated with said ratchet bar and hav
70 ing a slot disposed in an inclined relation relative
to the ratchet bar, a pawl provided with a pivot
slidable in said slot and having a ?nger piece, a
spring acting to urge said pawl to rack engaging
position, the angle of the slot being such that
75 the pawl is held out of holding engagement with
the ratchet bar by the slot when the pawl pivot is
shifted outwardly in said slot, the spring auto
matically acting to engage the pawl when the
pawl pivot is released.
‘
5. In a binder or loose sheet holder, the com
bination with a binding member, of a ratchet bar,
an adjusting member for said binding member
slidably associated with said ratchet bar and hav
ing a slideway inclined and angularly disposed
relative to» the ratchet bar, a pawl provided with 1O
a pivot pivotally and slidably supported in said
slideway and manually adjustable longitudinally
of the slideway, and a spring acting in all positions
of the pawl pivot in the slideway to urge the pawl
to ratchet bar engaging position, the outer end 15
of the slideway being so positioned relative to
the ratchet bar that the pawl is rendered inef
fective for holding engagement with the ratchet
bar by manually shifting the pawl pivot to the.
outer end of the slideway, the spring acting to 20
reengage the pawl with the ratchet bar for non
holding ratcheting engagement therewith on the
immediately following inward movement of the
adjusting member on the ratchet bar, the pawl
being automatically shifted to holding ratcheting 25
engagement with the ratchet bar on the outward
adjustment.
6. In a binder or loose sheet holder, the combi
nation with a binding member, of a ratchet bar,
an adjusting member for said binding member 30
slidably associated with said ratchet bar and hav—
ing a slot disposed in an inclined relation to the
ratchet bar, a pawl provided with a pivot pivot
ally and slidably engaged in said slot and hav
ing a ?nger piece, the angle of the slot being 35
such that the pawl is held out of holding engage
ment with the ratchet bar by the slot when the
pawl pivot is shifted outwardly in the slot, and a
spring acting to urge said pawl to rack engaging
position in all positions of the pawl pivot in said
slot and to return the pawl pivot to the inner
end of the slot when the pawl is reversed to hold
ing position upon the binding member tightening
movement of the adjusting member on the
45
ratchet bar.
'7. In a binder or loose sheet holder, an adjust
ing means comprising a ratchet bar, an adjust
ing member slidably associated with said ratchet
bar and having a slideway inclined and angularly
disposed relative to the ratchet bar, a pawl pro 50
vided with a pivot pivotally and slidably sup
ported in said slideway and manually adjustable
longitudinally of the slideway, and a spring act
ing in all positions of the pawl pivot in the slide
55
way to urge the pawl to rack engaging position
and acting to return the pawl pivot to the inner
end of the slideway, the outer end of the slide
way being so positioned relative to the ratchet
bar as to render the pawl ineffective for holding 60
when the pawl is at the outer end of the slideway.
8. In a binder or loose sheet holder, an adjust
ing means comprising a ratchet bar, an adjust
ing member slidably associated with said ratchet
bar and having a slot disposed in an angular in 65
clined relation to the ratchet bar, a pawl provided
with a pivot slidably and pivotally engaged in
said slot, the angle of the slot being such that
the pawl is held out of holding engagement to the
ratchet bar by the slot when the pawl pivot is 70
manually shifted outwardly in the slot, and a
spring acting to urge said pawl to ratchet bar en
gaging position in all positions of the pawl pivot
in the slideway.
LEON L. ALLYN.
75
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