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Патент USA US2125048

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July 26, 1938.
a E, HAMLIN
'7
’ 2,125,048
Loosn LEAF BINDER.
Filed Sept. 50, 1935 ,
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July 25, 193.
G_ E, HAMLIN _ 1
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2,125,048
LOOSE LEAF BINDER
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Filed Sept. 50, 1955
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Patented July 26, 1938
'
UNITED STATES
2,125,048
PATENT OFFICE
2,125,048
LOOSE LEAF BINDER
Guy E. Hamlin, Syracuse, N. Y., assignor to Mc
Millan Book Company, Syracuse, N. Y., a cor
poration of New York
Application September 30, 1935, Serial No. 42,763
2 Claims.
My invention relates to loose leaf binders and
more particularly to loose leaf binders of the
post clamp type.
An object of my invention is the provision of
5 a loose leaf binder of the post clamp type in
which one cover section, including the casing for
housing the post clamping mechanism, may be
readily removed from the binder to enable re
moval, ire-arrangement or replacement of sheets
10 of paper in the binder and the provision of means
whereby the binder may be re-assembled quick
ly and with a minimum of elfort by placing the
casing over the ends of the posts and pressing
thereupon to secure the casing to the posts.
A further object of my invention is the provi
15
sion of a loose leaf binder of the post clamp
type which is easy to operate, and in which the
clamps, for securing the binder covering to the
posts, are brought into holding engagement with
the posts during re-assembly of the binder by
merely pressing upon the casing which encloses
the post clamps.
My invention further contemplates the provi
sion of a loose leaf binder of the post clamp
type in which the post clamps are spring actu
ated so that they may be secured to they posts
merely by pressing upon the housing which en
closes the post clamp and the provision of means
operated from the ends of the casing for releas~
3O
ing the post clamps from the posts.
Other objects and advantages of my inven
tion will be more apparent from the following
description when taken in connection with the
accompanying drawings, in which:
35
Figure 1 is a perspective view showing a com
plete binder with the pages thereof in assembled
condition.
’
'
Figure 2 is a view taken on the line 2—2 of
40
Figure 1' in the direction indicated by the arrow.
Figure 3 is a View taken on the line 3--3 of
Figure 2 in the direction indicated by the arrow.
Figure 4 is a plan view of the casing with the
top portion thereof removed, taken approximate
4
ly on the line 4—4 of Figure 2.
Figure 5 is a view taken on line 5-5 of Fig
ure 4.
Figure 6 is a perspective view of a saddle or
fulcrum for the post clamps.
50
Figure 7 is a view showing a spring suitable for
pressing the post clamps into clamping engage
ment with the posts.
'
Figure 8 is a view similar to Figure 2, showing
a modi?ed form of the construction illustrated
55 in Figures 1 to' '7 inclusive.
(Cl. 129—12)
Figure 9 is a view taken on the line 9-9 of _
Figure 8.
Figure 10 is a view taken on the line Ill-I0
of Figure 9.
The loose leaf binder, in which my invention
is embodied, comprises a pair of covers II and
I2 between which a quantity of paper I3, pam
phlets or similar articles are adapted to be found.
Each of the covers is provided with hinge lugs
I4 which are adapted to co-operate with similar 0
hinge lugs I6 extending from casings I1 and. I8.
Suit-able pintles I9, extending through the hinge
lugs Ill and I6, enable the covers II and I2
to hinge with respect to casings I1 and I8 re
spectively.
15
The lower casing I'l, while it may consist of
a ?at bar to which the posts 2I and 22 for re
taining the paper are anchored, preferably com
prises a tubular body 20 formed of sheet metal,
the ends of which. are closed by metal end clo
sures 23. The posts 2| and 22, while they may
be permanently anchored in the casing H, are
preferably removably threaded in anchor lugs
24 which are secured in the casing as by riveting
the ends thereof as indicated in the drawings
at 26. The posts 2| and 22 are preferably made
in two sections, as indicated at 21, so that the
top‘ half of each of the posts may be removed,
if desired, and a longer section of post threaded
into the lower half of the post in order to ac
commodate a larger quantity of paper in the
binder. Suitable apertures 28 and 29 are pro
vided in each of the post sections for the insertion
of a tool to enable the post sections to be readily
unthreaded from each other or from the anchor 35
lugs 24.
The upper casing I8 is formed in similar man
ner to the lower casing I1 and houses releasable
post clamping mechanism which upon release en
ables removal of the casing I8 together with the
cover I2 from the posts whereby sheets of paper
may be inserted or removed from the binder.
The housing I8 is provided with aligned openings
25 and 25’ for the reception of the ends of the
posts which, when the binder is in assembled con-- 1.
dition, project through the casing. The mecha
nism for releasably securing the casing I8 to the
posts 2I and 22 comprises post clamps 3| and 32
together with suitable mechanism for normally
urging the post clamps into clamping engage- '
ment with the posts and mechanism for shift
ing the post clamps from said position of en
gagement when it is desired to remove the casing
I8 and cover [2 from the posts.
The post clamps 3| and 32 each consists ofa 55
2
2,125,048
by a metallic end closure 62 while the other
end of the casing I8 is closed by two metallic
end closure members 63 and 64. The end clo
gripping section of each of the post clamps is sure member 64, shown most clearly in Fig
provided with an opening 31 for the reception ‘ ure 5, is anchored in position by making the
portion 66 thereof slightly larger than the casing,
of the posts. The opening 31 in each of the
gripping sections is slightly larger in diameter as indicated at 61, so that it bears against the
than the diameter of the post and is preferably end of the casing. The end’ closure member
64 has an internal hollow portion 68 adapted
slightly oval with the long axis thereof extend
to receive a spring 69 one end of which is se 10
10 ing crosswise of the housing |8 so that the post,
when the gripping section of the post clamp-ris cured to the leg 51 of the slide while the other
perpendicular thereto, may freely pass ‘through end is secured to an anchor pin 1| retained in
the opening. The openings 31, when the grip—' the end closure 64. The end closure 63 consti
ping sections of the post clamps are perpendicular tutes a ?nger piece for moving the slide_52 to
one leg 58 of which it is secured by riveting as 15
15 to the posts, are in registry'with the openings
shown
at 12. The’ ?nger piece 63 is slidable in
25 and 25’ in the bottom and top walls of the
the casing and slidable with respect to the end
housing I8. Each of the post clamps is pro
closure 64.
vided, at or near its midpoint, with a trans
The mechanism described constitutes a sim
verse slot 4| adapted to receive the- midpart
42 of an upstanding member 45 formed as part ple means for releasing the post clamps from 20
comparatively thin metal plate bent at approxi
mately its midpoint as indicated at 33 to form
gripping section 34 and a lever section 36; The
of a post clamp saddle 43. The post cla‘m'p'saddle
43 comprises the upstanding member 45 which is
formed with’ grooves 44 and fulcrum points '46
upon which the post clamp rocks. The other end
of‘ the post clamp saddle'has an upstanding por
tion 41 which is adapted’v to be received in an
end slot 48‘ formed- inrthe post‘ clamp. A U
shaped hairpin spring 49', shown in Figure '7,
rests in the grooves 44 and has its legs extending
through‘ apertures 5| formed in the base of the
post clamp saddle.
7
When the post clamp saddle and the post
clamp are’ in assembled relationship, the legs
of the spring 49 rest upon the base of the sad
dle and the upper portion of the spring which
encircles‘ the upstanding portion 41 presses up
wardly upon the lever section 36 of the post
clamp thereby rocking the post clamp about the
f‘ulcrumpoints 46 so that the walls of the open
40 ing 31 in the post clamp engage the sides of the
post. The post clamp saddles may be held in
the. casing l8 by striking up portions 50 of the
housing. to retain the post clamp saddles against
movement longitudinally of the housing and; con
45 ?ne them rigidly between the bottom and top
walls of the casing. It will be appreciated that
rocking of the post clamps on the fulcrum points
46 will raise‘or lower the gripping sections 34
of the-post clamps so as to release or engage the
post clamps with the posts.
Means are provided for raising the gripping
sections 34 of the post clamps to a position per
pendicular to the posts and thereby release the
housing from the posts. Such means comprise
a slide 52, suitably mounted in the housing l8,
and adapted to move longitudinally thereof’ so
as to‘ bring cam portions 53 formed in" the slide
into engagement with the ends of the gripping
sections of the post clamps; The cam portions
53 when movedv into engagement with the ends
of the post clamps cam the gripping sections
upwardly to a position perpendicular to‘the posts
and thus release the posts; The opposite ends of
the slide 52 are provided with openings 56‘form
ing legs 51‘, 58, 59’ and 6| which straddle the
posts, the cam portions-H53 of the slide being
formed in these leg portions‘ of the slide, The
central‘ portion of the slide has a raised por
tion as indicated at 60 which engages the top
70 wall of the casing and retains the slide in the
return automatically into a position such that
when the binder is to be reassembled the eas
ing may be pressed down over the posts and the
post‘ clamps re-engaged with the posts without 25
the necessity of returning the slide to its nor
mal position manually. When the ?nger piece
63 for releasing the slide is pushed inwardly the
slide 52 is moved longitudinally of the casing
|8 until’ the cam portions 53 engage the ends
of the post'clamps 3| and 32 raising them against
the tension of the springs 49 until the openings
31 are in registry with and the side walls of the
openings free from the posts whereupon the cas
ing I8, together with the cover l2, may be lifted
from the ends of the posts. Upon release of
the ?nger piece 63‘ from manual contact the
spring 68 automatically draws the slide to the
left, as viewed in the drawings; until the cam
portions 53 are out of engagement with‘ the post 40
clamps 3| and 32, whereupon the springs 49
will automatically press the post clamps back
into position to be engaged by the posts.
' When the binder is being re-assembled the
housing I8' is placed over the ends of the posts 45
with the openings 25 therein in registry with
the posts and upon a slight manual pressure
being exerted on the top of the housing |8 the
posts will cam the post clamps 3| and 32 up
wardly so that the posts will enter the openings 50
in the post clamps and then pass upwardly
through the openings 25' in the housing I8. As
soon as the posts have passed through the open
ings 31 in the post clamps‘ the springs 49 will
automatically press the post clamps into en 55
gagement with the posts and upon further move
ment of the casing, into the position shown in
Figure 2, the housing l8 will be rigidly secured
to the posts.
'
'
‘
In Figures 8 to 10 inclusive I have shown a 60
V modi?ed form of the construction illustrated in
Figures 1 to' '7 inclusive. In this modi?ed con
struction instead of using a single slide in the
casing I8, as in the construction previously de 65
scribed, two slides 86 and 81 are used, to the
inner ends 88 and 89 of which a spring 9| is
secured. The spring 9| tends to move the inner
ends 88 and 89 of the slides toward each other
thereby moving outwardly the outer ends of the 70
proper position in the casing. A pin 65 extending
slides which are secured as indicated at 90 to
through the walls of the casing is‘in registry with
a slot 65’ formed in the slide and serves to guide
?nger piece 63. Stationary end closure pieces
> the‘ slide.
73
theposts and for enabling the post clamps to
One open' end of the casing l8r is‘ blocked’ off
end closures or ?nger pieces 92, similar to the
93' are also provided which are rigidly held in
the casing in a similar manner to that described 75
3
2,125,048
in connection with the preferred form of the
invention.
In this modi?ed construction the operator
presses upon both ?nger pieces 92 to push the
slides 86 and 81 inwardly against the tension of
the spring 9!. The inward movement of the slide
brings the cam portions 53 of the slides into con
tact with the post clamps to raise them out of
engagement with the posts. When the casing l8
10 has been removed from the posts and the ?nger
pieces 92 released the spring 9| automatically
returns the slides to normal position. Outward
movement of the slides so as to bring the ?nger
pieces beyond the end closures 93 is prevented by
15 stops 94 provided respectively on the slides 86 and
81. The stops 94 engage the ends of the post
clamp saddles 43 and prevent further outward
movement of the slides. When the binder of
Figures 8 to 10 is being reassembled the post
20 clamps are automatically engaged with the posts
when the housing I8 is pressed down over the
posts.
It is believed that the operation of the construc
tions shown is sufficiently clear from the fore
25 going description and it will be apparent there
from that I have provided a loose leaf binder of
the post clamp type in which one cover and its
associated casing can be readily removed from
the posts and when the binder is being reassem
30 bled, after the insertion or removal of sheets of
means in the releasable housing adapted to move
the post clamps to a substantially perpendicular
position with respect to the posts is normally re
tained out of engagement with the post clamps
by spring means, characterized by a ?nger piece
connected to said slide and protruding from one
end of the releasable housing, said ?nger piece
being movable at least part way into said housing
against the action of the spring means to move
the slide to post clamp disengaging position, a 10
closure member for the end of said releasable
housing through which the ?nger piece protrudes,
said member projecting beyond the housing along
the rear edge of the ?nger piece, whereby said
member protects the ?nger piece from being ac 15
eidentally operated, said construction enabling
the operator to remove the releasable housing
from the posts by grasping said releasable hous
ing at its ends and pushing inward on the ?nger
piece while simultaneously lifting the releasable 20
housing upward.
2. A loose leaf binder of the so-called post
clamp type wherein the paper is tightly retained
between a housing having posts rigidly secured
thereto and a second housing releasably secured 25
to said posts, and wherein apertured post clamps
are normally spring pressed into angular rela
tionship with the posts to clamp the same thereto
and wherein slide means in the releasable hous
ing adapted to move the post clamps to a sub
30
tions illustrated without departing from the spirit
stantially perpendicular position with respect to
the posts is normally retained out of engagement
with the post clamps by spring means, charac
terized by ?nger operated means connected to
said slide means and protruding from at least 35
one end of the releasable housing, said ?nger
operated means being movable inward at least
part way into- said housing against the action of
of myinvention, as de?ned in the appended
said spring means to move said slide means to
paper, the housing may be quickly and conven
iently secured to the posts merely by placing the
openings in the housing in registry with the posts
and pressing downwardly on the‘ top of the hous
It will also be appreciated that various
modi?cations and changes may be made in the
form~ and relation of the parts of the construc
35 ing.
40 claims:
1. A loose leaf binder of the so-called post
clamp type wherein the paper is tightly retained
between a housing having posts rigidly secured
thereto and a second housing releasably secured
45 to said posts, and wherein apertured post clamps
in the releasable housing are normally spring
pressed into angular relationship with the posts
to clamp the same thereto, and wherein slide
post clamp disengaging position, means in con 110
nection with the housing for protecting said ?nger
operated means against accidental operation, said
construction enabling the operator to remove the
releasable housing from the posts by grasping
said releasable housing at its ends and pushing v2. 1.
inward on said ?nger operated means while simul
taneously lifting the releasable housing upward.
GUY E. HAMLIN.
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