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Sept. 24, 1946.
5.0. MCFARLANE
2,407,992
PLAN FOLDING MACHINE
Filed March 11, 1944
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EDWIN C.M€FARLANE
BY
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ATTORNEY
‘
Sept 24, 1946-
E. c. MCFARLANE
2,407,992
PLAN FOLDING MACHINE
Filed March 11, 1944,
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2 sheets-sheet 2
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INVENTOR.
EDW/N C. MS-‘FARLANE
BY
‘ATTORNEY
Patented Sept. 24, 1946
2,407,992
UNITED STATES PATENT OFFICE
2,407,992
, PLAN FOLDING MACHINE
‘ Edwin C. McFarlane, Brooklyn, N. Y.
Application March 11, 1944, Serial‘No. ‘526,097
3 Claims.
( U1. 270—-'73)
1
2
In industrial plants and in manufacturing and
.
widely varying widths without adjustment as to
‘building operations large numbers of plans fre
width.
quently have to be handled. These are commonly
in the form of photostats or blueprints, some of
which are of a size which necessitate that they
‘
Features of the invention, other than those
adverted to, will be apparent from the herein
after detailed description and claims, when read
conjunction with the accompanying drawings.
be folded ‘for convenience in ?ling. This work
has heretofore been done entirely by hand. ‘ In
some plants the number of plans made daily is
The drawings illustrate one practical embodi
ment of the invention, but the construction
so great that a large force is employed expressly
therein shown is to be understood as illustrative,
for initially folding them after they come from 10 only, and not‘as de?ning the limits of the in
vention.
.
theprinting machines, The work is tedious and
Figure 1 is a perspective view showing one
when done by hand is seldom if ever uniform. I
The object of ‘the present invention is to elimi
form of the machine of the present invention.‘
Figure '2' is a ‘fragmental view showing one of
the creasing bars retracted to permit :a plan to
he introduced betweensaid bar and the‘ folding
nate this manual work by the provision of a ma
chine which will satisfactorily perform the fold
ing operations on plans in such an e?ic‘ient man
platform.
ner that one operator can do the ,workwhich
heretofore required a‘ dozen or more persons to
manually perform.
‘
4
The machine of the present invention is so con
‘
Figure 3 is a view similar to Figure 2, but illus
trating the creasing bar in normally active po—
20
sition.‘ ,
Figure 4 is a fragmental elevation looking from
the right hand side of Figure 3.
Figure‘ 5 is a fragmental plan looking down on
manner as to retain folded condition when re
Figures‘ 3 and 4.
moved from the machine and to do this work in
Figure 6 is a vertical, longitudinal section
a uniform manner, so that they will properly fit 25
through the machine shown in Figure 1 ‘with the
into the filing requirements of the plant.
central portion of the machine broken away.
In one of its practical forms,‘ the machine of
Figure 7 is a fragmental elevation looking from
this invention comprises an arcuate folding plat
the right hand of Figure 6 and showing the
form. A pair of parallel creasing bars overlie the
platform in substantially parallel relation to the :2: means‘ for adjusting the length of the fold.
Figures 8, 9 and 10 are diagrammatic views
axis of its curvature and a pair of parallel fold
showing successive positions of the operating
ing bars are mounted to move back and forth
parts in folding a plan, with a fold of one par
over the platform to carry successive portions of
ticular length.
'
‘
>
a plan from one creasing bar to the other, and
Figure 11 is a like view showing ‘adjustment of
vice versa, and to tuck the plan beneath said
the parts to produce a fold of a different length.
creasing bars in succession. The creasing bars
stituted that, when operated, it will manipulate
plans into flat accordion folds, creased in such
are lifted in proper timed relation to the opera
tions of the folding bars to permit the plan to
be introduced beneath them, but are spring im
pelled in the direction‘of the platform, so that
when released, they press the plan against the
platform to form a fold therein and hold the
already folded portion of the plan in position
while the next fold is being performed.
The machine may be conveniently operated
manually by a crank and after one end of a plan
has been fed into the machine, movement of the
crank will cause the ‘machine to automatically
manipulate the plan until it is completely folded. ~
Figure 12 is a perspective view of a folded plan.
The machine as shown in the drawings com
prises an arcuate folding platform I preferably,
‘although not necessarily, curved on the arc of a
‘circle to embody a substantially semi-cylindrical
tubular‘structure, the opposite ends of which are
closed by end walls 2, ‘It is convenient to provide
an appropriate base 3.
Extending longitudinally between the end
walls 2 and projecting through and beyond them
is a pivot rod 4 and-pivoted to this rod externally
of'each end ‘wall 2‘ are‘two links 5 and 6.‘ The
inner ends of the links Sand 5 are pivoted to the
rod ll and beyond ‘the surface of the folding plat
The folded plan may then be removed and the
form i the ‘corresponding links1 at the opposite
next plan introduced and folded in the same
ends of the'machine ‘are connected ‘together by
manner. Provision is made for adjusting the
rods '1 and‘ 5, respectively. These rods pass
width of the fold to meet ?ling requirements and
through brackets S'pfor’mped on the under sides of
the machine is constructed to handle plans of 55 creasing bars It and H. r The‘ bar It) may be con
3
4.1
of course its companion 30) shifted appropri
veniently referred to as the left hand creasing
ately to produce a shorter fold. It will of course
bar and the bar I I, as the right hand creasing bar.
be understood that normally the nut 31 is tight
These bars overlie the folding platform I and are
ened, so as to produce su?icient friction between
faced on their under sides with soft rubber strips
I2 to better adapt them to grip a plan between C1 the adjusting disks and the cavities 3| in which
they are contained, to preclude inadvertent shift
them and the folding platform.
ing of these disks and that the nut is only loos
The rubber facings of the bars are normally
ened when a change of adjustment is desired.
held in contact with the folding platform by
Positioned at each of the opposite ends of the
springs 83 coiled around the rods 1 and 8, with
one end of each spring hooked about theadjacent 10 machine are two upstanding v‘folding bar car
rying arms 39 and 40.’ The arms 39 at the op->
link 5 or 6 ‘and the other end of the spring hooked
posite ends of the machine are both ?xed at their
about the bracket 9 of the creasing bar, as best
lower ends to a rock shaft 4| which passes di
shown in Figures 3-5 inclusive. The springs l3
rectly through the machine, so that when the
are tensioned so as to permit the rubber facings to
tightly grip the plan against the platform at all 15 rock shaft is oscillated by a crank 42 also secured
times save when the creasing bars are swung ‘back
on their pivot rods 1 or 8 for reasons presently
to be explained. This disengagement of the
creasing bars with the folding platform may be
accomplished in two ways. First, by the opera
.tion of cam members l4 and I5 which are rigidly
mounted at the opposite ends of the respective
creasing bars or by means of releasing handles
.l 6 and I‘! with which said bars are provided. The
releasing handles are pivotally secured to the re
spective creasing barsby means of pivot screws l8,
.to said shaft, both of the arms 39 will be simul
taneously oscillated about the axis of said shaft.
The arms 40 at the opposite ends of the machine
maybe likewise secured together, but this is not
necessary and in practice they are merely se- .
cured by pivots 42 to the end walls of the machine.
bar, so .that the creasing bars may be selectively
On the upper ends of the arms 39 and 40 are
eyelets through which are passed a pair of par
allel rods which pass externally of the eyelets
through spacing blocks 43 and are headed over as
shown .at 44. On these rods are mounted folding
bars 45 and 45 which are provided at their op
posite ends with cam operating rollers 4'! and
disengaged from the platform by grasping the
48. These rollers, are adjacent the inner faces
positioned normal to the upper surface of each
handles It or 7|‘! and rocking the ‘bars upwardly 30 of the eyelets on the upper .endsof the arms 39
and 4B and are spaced apart for cooperation with
, on their pivot rods 1 or 8 against the tension of
the springs l3.
When desired the creasing bars
may be locked in these raised or retracted posi
tions by engaging the cupped inner end IQ of an
enlargement 20, formed on each handle, with a u
conical head rivet 2| carried by the outer end of
each of the links 5 and 6, as shown in Figure 2.
The position of the creasing ‘bars circumferen
tially of the folding platform is controlled by links
the cam members l4 and I5, as will be presently
explained. For convenient reference the folding
bar 45 may be termed the left hand folding bar 7
and the bar 45, the right hand folding bar.
In the drawings the spacing blocks 43 are shown 3
as spacing the upper ends of the arms 39 and 443
the same distance apartv as the lower ends of
these arms, so that said arms are parallel at all
times. .If desired, however, these bars may be
22 and 23. These links are secured by pivots 24
other than parallel without departing from this
and 24 to intermediate portions of the links 5
invention. The essential criterion is that: When 7
and 6. This arrangement is duplicated at both
the parallel folding bars 45 and 46, conjointly
endsof the machine. The outer ends of the links
move to the left in Figure 1, under the impulse of
22 and 23 are provided with stops '25 ‘and 26, the
‘purpose of which will be presently explained, 45 the crank 42, the rollers 48 of the right hand
folding bar 46 will engage with the underv sides
while the inner ends of said ‘links are connected to
of the cams i4 and retract the left hand creasing
pivots 27 and 28 carried by adjusting disks 29
bar I!) to permit the folding bar 43 to move into a
and 33,, positioned, respectively, at opposite ends
position beneath the creasing bar ID, i. e., be
of the machine.
The adjusting disks 29 and 3,0 are best shown 50 tween said creasing bar and the platform, as
shown in Figure 10, and when the folding bars
in Figures 6 and '7. They are set into recesses 3|
move to the right in Figure 1, under the impulse
in the opposite end walls and are held in such
of the crank, the rollers 41 of the left hand fold
recesses by a shaft 32 which extends entirely
ing bar 45 will engage with the under side of the
through the machine. This shaft is in the nature
cams l5 of the right hand creasing bar II and
of a bolt, the head of which is formed by a key
retract the latter, so that the folding bar 45 may
33 which extends through a slot in the shaft
move into a position beneath said right hand
and is received in a slot 34 in the disk 30, by vir
creasing bar I I, i. e., between said creasing bar
tue of which the disk is locked for rotation with
and the platform, as shown in Figure 9. It'is by
the shaft 32.
The other end of the shaft is locked to the disk 60 virtue of these operations that the folding of a
plan is accomplished,
.
29 by a pin 35 passed through a hole in the shaft
The machine operates in the following man
and projecting into a cross-axial slot 36 in the
ner: The plan, designated P in Figures 8-10, is
disk 29. This end of the shaft is threaded and
threaded between the folding bars 45 and 45, as
receives a nut 31. When the nut is loosened, an
shown in Figure 8, and the forward’ end of the
appropriate wrench may be introduced into holes
plan is placed beneath the rubber facing of the
38 in the disk 29 and this disk may be turned to
left hand creasing bar l9. Duringrthis operation,
simultaneously turn the disk 30 for the purpose
of shifting the positions of the pivots 21 and 28
the ‘handle I6 is manipulated in the manner
and thus angularly adjusting the levers 5 and 6 in
described, to retract the rubber facing of this
creasing bar, so that the end portion of the plan
order to adjustthe creasing bars l0 and I I, so
can be introduced between the rubber facing and
that they are closer together or further apart,
according to the length of the fold desired. Fig
the folding platform. When thus positioned the
ures 8-10, inclusive, show the‘ position of the piv
handle is released, so that the end of the plan
is gripped against the platform.‘ The parts are
ots 72'! and 23 ‘for a particular length of fold,
while ‘Figure 11 shows the adjusting disk 29 (and
then in thepositions shown in Figure 8;
'
5
2,407,992
If the main operating handle 42 is now oscil
lated in a clockwise direction, the folding bars
will move to the right until the rollers 47 of the
left hand folding bar 45 engages with the cams
l5 whereupon further movement of the folding
1. A plan folding machine comprising: a fold
ing platform, right hand and left hand creasing
bars extending transversely of said platform and
normally impelled into contact therewith, right
bars in the same direction will cause the right
parallel relation to one another and to the creas
hand and left hand folding bars arranged in
hand creasing bar to be retracted to permit the
left hand folding bar 45 to tuck the plan beneath
the creasing bar II, as shown in Figure 9.
ing bars, means for mounting said folding bars
for conjoint movement back and forth over the
platform in a direction normal to both the creas
If the handle is now oscillated to the left in a 10 ing and folding bars to alternately bring the left
counterclockwise direction, the rollers 41 will
hand folding bar between the right hand creas
release the right hand creasing bar I l and permit
ing bar and the platform and the right hand
it to drop down under the tension of spring l3
folding bar between the left hand creasing bar
on to the plan, thereby forming the subjacent
and the platform, means for. s0 moving said fold
loop in the plan into a crease and tightly grip 15 ing bars, cam members associated with the creas
ping the plan while the handle continues to move
ing bars, and rollers movable with the folding
to the left. During the movement of the handle
bars to lift the creasing bars from engagement
to the left the folding bar 46 will feed the plan
with the platform and permit such folding bars
back across the surface of the folding platform
to enter between said creasing bars and the
until the rollers 48 engage with the cam l4, re
tract the latter and allow the right hand folding
bar 46 to tuck the plan beneath the left hand
creasing bar Ell, as shown in Figure 10. The
handle 42 is thereupon again moved to the right
20
platform.
2. A plan folding machine comprising: a sub
stantially semi-cylindrical housing the curvilinear
surface of which constitutes a folding platform,
carrier links pivoted to the opposite ends of the
and the operations described are repeated as the 25 housing substantially concentric with the curva
handle is moved back and forth to feed succes
ture of the platform, right and left hand creas
sive portions of the plan back and forth across
ing bars pivoted to said carrier links with springs
the platform in superimposed relation. The
rollers 4'! and 48 will retract the creasing bars
bearing against the creasing bars to normally
impel them toward said platform, right and left
as the handle approaches the termini of its 30 hand folding bars connected for conjoint opera
travel, and as these rollers leave the respective
tion and parallel to one another and to the creas
cams, the looped portions of the plan will be
ing bars and individually mounted on the oppo
creased, so that by the time the handle has been
site ends of the housing for pivotal movement
operated su?iciently to feed all of the plan across
back and forth over the platform in a direction
the platform, the folding of such plan will be
complete and the planin ?nished folded condi
tion will be in the grip of the two creasing bars.
It may be released from said bars by operating
the handles I‘! in the manner hereinbefore de
scribed, whereupon the plan may be lifted off
of the machine and a new .plan introduced for
repetition of the operations hereinbefore de
scribed, to accomplish the folding of the same.
The stops 25 and 26 to which I have referred
normal to both themselves and the creasing bars
to alternately bring the left hand folding bar
between the right hand creasing bar and the
platform and the right hands folding bar between
the left hand creasing bar and the platform,
means for so moving said folding bars, adjusting
links connecting the carrier links to adjusting
means at the opposite ends of the housing for
varying the distance between the creasing bars,
and stops on the adjusting links to limit the
are to preclude overtravel of the arms 39 and 4!! 45 movement of the folding bars according to the
in opposite directions, as indicated in Figures 9
positions of the creasing bars.
and 10. These stops are preferably faced with
rubber, so that when contacted by the arms no
3. A plan folding machine comprising: a sub
stantially semi-cylindrical housing the curvilin
noise will result.
ear surface of which constitutes a folding plat
The machine of this invention may be oper 50 form, carrier links pivoted to the opposite ends
ated at considerable speed. In practice it is not
of the housing substantially concentric with the
uncommon for experienced operators to fold
curvature of the platform, right and left hand
plans 30" wide and 10 ft. long in less than 20
creasing bars pivoted to said carrier links, right
seconds. Such manipulation of plans is impos
and left hand folding bars connected for conjoint
sible by the old hand method. In fact, the ma 55 operation and parallel to one another and to the
chine of this invention can accomplish over any
creasing bars and individually mounted on the
particular period of time more work and do it
opposite ends of the housing for pivotal move
more satisfactorily, than could be accomplished
ment back and forth over the platform in a direc
by many hand operators, and the product is a
tion normal to both themselves and the creasing
uniform product.
60 bars to alternately bring the left hand folding
In the foregoing detailed description I have
bar between the right hand creasing bar and the
set forth the invention as it has been marketed.
platform and the right hand folding bar between
I am aware, however, that certain modi?cations
the left hand creasing bar and the platform,
may be made without departing from the basic
means for so moving said folding bars, and ad
concept of the invention, the scope of which is 65 justing means common to both the creasing and
to be understood as fully commensurate with the
folding bars for varying the distance between
appended claims.
the creasing bars and also limiting the movement
Having thus fully described the invention, what
of the folding bars accordingly.
I claim as new and desire to secure by Letters‘
Patent is:
70
EDWIN C. MCFARLANE.
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