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Патент USA US2136705

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NOV. 15, 1938.
W_ C, NASH
_ _
l
2,136,705
WEB GUIDE MECHANISM
Filed Feb. 27,- 1936
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3 Sheetsßheet 1
WEB'GUIDE MEGHANISM
Filed Feb. 27, 193e
3 sheets~sneet 2
Nov. l5, 1938.
Wl c. NASH
2,136,705
WEB GUIDE MECHANISM
Filed Feb. 27, 195,6 .
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3 sheets-sheet 5
Patented Nov. 15, 1938
2,136,705
UNITED STATES PATENT OFFICE
2,136,705
WEB GUIDE MECHANISM
William C’. Nash, Neenah, Wis., Aassigner of one
fìfth .to Mary Jones and one-fifth to Marie
Duvall Nash, "both of Neenah, Wis., and one
fifth to William M. Nash, .Chicago„Ill., and .one
lifth to 4Roy A. Nash, New Rochelle, N. Y.
Application February 27, 1936, Serial No. 66,079
2 Claims.
Thisv invention relates to improvements in a
web guiding device and refers specifically vto a
device for guiding an endless traveling web in
substantially constant alignment whil-e said web
is traveling in a substantially vertical direction.
‘ The object and advantages of my invention will
be apparent from the accompanying drawings
and following detailed description.
'
In the drawings, Fig. 1 is a diagrammatic side
elevational view of a substantially vertically
traveling web 'guided by my improved apparatus.
Fig. 2 is an enlarged elevational View of the
guide roll actuating mechanism.
Fig. 3 is a sectional View taken on line 3--3
of Fig. 2.
Fig. 4 is a sectional view taken on line A~-¢l of
Fig. 2.
Fig. 5 is a sectional view taken on line 5_5 of
Fig. l.
Fig. 6 is a fragmentary detail elevational View
illustrating particularly the means for limiting
the guide roll actuating mechanism.
'
`Referring in detail to the drawings, I indicates
an endlessly traveling web which is adapted to
25 pass vover guide rolls, 2, 3, il, 5 and 5.
` In the paper making operation after the
newly formed web has beenstripped from the
forming wire, the same is passed forwardly
through one or more sets of presses and during
30 passage through said presses the weak wet web is
supported between two endlessly traveling felts
or blankets. In Fig. l the web I `comprises one
of the traveling felts or blankets. Of course, it
is essential that the felt or blanket be caused to
travel in substantially constant alignment.
Therefore, in view of the fact that the felt dur
ing its back travel is carried over' a series of
guide rolls positioned above vor below the path
of travel of the wet web, said felt must be caused
40 to travel in substantially vertical directions.
My present invention is particularly applicable
(Cl. ’i4-241)
of bolts I4 or the like. A bevel gear I5 is mounted
upon the end of shaft I I and is adapted to mesh
with a cooperating bevel gear I5 mounted upon
shaft I l. Shaft Il at its end may carry disc I8
and a pin i9 is eccentrically positioned upon the »
face of said disc. A connecting rod 2i) is pivotally
connected to pin I9 and is pivotally connected
at its opposite end at 2| to the upper end of
U-shaped member 22.
A link 23 is also con
nected at the pivot point 2| and is pivotally
anchored at its opposite end as atv 24 to the 10
frame I3. 'I‘h-e U-shaped member 22 comprises
spaced arms 25 and 26 which embrace or are dis
posed adjacent opposite faces of ratchet wheel 2l.
The ratchetwheel 2'lis rigidlymounted upon shaft 15
28 which is journalled in vbearings 29 and 35 car
ried by _frame I3. The Wheel 2l carries an in~
tegral hub 3.! which abuts bearings `29 and .35
at its opposite ends whereby lateral motion or
motion ofthe wheel 21, or motion along the
length of shaft 28 is prevented.
It can readily `be seen that -as web or blanket I
travels over guide rolls .-2, 3, d, 5 and `E, the rotary
motion of guide `roll 5 will drive sprocket wheel
Il! which, in turn, imparts motions tothe disc 25
I8 »which reciprocates connecting rod 2li. In
View of the `fact that the U-’shaped member 22
is connected'to the anchoring link 23, the recipro
cation of connecting rod 2i! imparts a substan
tially vertical motion to the U-shaped member 30
22. `Strictly speaking, the motion of pivot ‘point
2l is along an arc the radius of which is equal
»to the length yof `the anchoring link 23. How
ever, due to the relative `length of the link 23„v
`’vvith‘respect to the throw of the eccentric pin
I9, `the motion of the pivot point ZI is, for all
practical purposes, substantially Ain a vertical line.
It `can readily be seen, therefore, that under normal operation the U-shapedmember 22 oscil- Y
to the guiding of these traveling felts and a1
lates upwardly _and downwardly, the arms 25
being substantially equally spaced from the
`though I do not wish to be ‘limited to this appli
cation of my invention, the operation thereof will
wheel 21.
A bracket 32 is 4mounted upon frame I3 and
be -described as being carried out in conjunction
is secured thereto` by means of bolts 33 or the
like. The end _of the bracket 32 carries a bar 3l!
which is provided with a slot 35 which traverses
a substantial portion of the length of bar 34. A
with the guiding -of a felt.
The guide roll 5 is mounted upon shaft 'l and
a sprocket wheel 8 may also be mounted upon
said shaft. A sprocket chain SI may travel
around and be driven by the sprocket wheel 3,
said chain in turn driving sprocket wheel I5
which is mounted upon shaft I I journalled in the
upper portion of standard I2 (Fig. 3). A stand
ard, I2 may be mounted upon the upper portion
“of ‘frame I3 and may be secured thereto by means
second bar 36 is adjustably _secured to bar 30s,
the securing means comprising screw 3'! which
can be rotated by means of lhand wheel 38, screw
31 being adapted to project through the slot 35
and anchor bar 35 at a desired position along the
length of slot 35. Bar 36 is `also provid-ed with a
>longitudinally extending slot 39. A screw 4U pro
2,136,705
jects through slot 39 and is manipulated by hand
21 drives sprocket chain 63. Sprocket chain 63
wheel 4I to secure the member 42 to the bar 36
at a desired position along the length of the
slot 39. The member 42 carries sleeve 43 which
is trained around sprocket wheel 64 which, in
turn, is mounted upon shaft 65 (Fig. 5). Shaft
65 is journalled in a Wall of housing 66 which
serves as a bearing for pin 44.
An arm 45 (Fig.
1) is secured at one of its ends toy the pin
44, said arm terminating at its opposite end in
two spaced bifurcated projections 46. A feeler
or palm 41 carries spaced lugs 48 upon its rear
10 surface, said lugs being secured to the bifurcated
arms-46 by means of pin 49. A coil spring 50
embraces pin 49 between the bifurcated arms 46
for a purpose to be hereinafter more fully
described.
In utilizing my invention the bars 34 and 36 and
the member 42 are so positioned as to bring the
face of palm 41 adjacent the desired path of
travel of the edge of theweb or felt I.
An arm 5I is carried at the opposite end of
20 pin 44 and the extending end of said arm is
pivotally connected to link 52. The opposite end
of link 52 is, in turn, pivotally connected to the
extending end of an arm 53, said arm being keyed
to shaft 54, which in turn is supported‘by the
25 extension 55 formed integral with the end of
bar 34. A coil'spring (not shown) circumscribes
shaft 54 and normally urges palm 41 toward the
edge of the web I. Shaft 54 carries at its oppo
site end arm 56 which, in turn, is pivotally con
nected to the member 26 comprising one of the
U-shaped elements 22.
,As has been hereinbefore described, when the
web or felt I is caused to travel, roll 5 is rotated
and as a consequence sprocket chain 9 is driven
35 which, in turn, drives sprocket wheel I8.
When
sprocket wheel I0 is so driven, the disc I8 is
rotated and reciprocating motion is imparted to
the U-shaped member 22. During normal oper
ation of my device, that is, when the web or
40 felt I is traveling in desired, constant alignment,
the U-shaped member 22 merely reciprocates
vertically, both arms 25 and 26 being out of
contact with the wheel 21 and being substan
tially equally spaced from the respective opposite
45 faces of said wheel.
Pawls 58 and 59 are ad
,iustably carried at the ends of respectively, arms
25 and 26. Each face of the wheel 21 is pro
vided with ratchet teeth 6U and 6I, said teeth
being formed adjacent the periphery of the
wheel and being pitched in opposite directions.
It can readily be seen that during operation of
my device lateral shifting or creepage of the web
or felt I will cause palm 41 to move which, in
turn, rotates pin 44. By means of the arm and
55 linkage mechanism connecting pin 44 and the
U-shaped member 22, said member will be rocked
to bring either pawl 58 or pawl 59 into contact
with teeth 60 or 6I, depending upon the direc
tion of the shift of the web or felt I.
Of course,
60 simultaneously with the shifting of the member
may be mounted upon any suitable support (not
shown). A substantially vertically positioned
screw 61 may also be journalled in the upper
and lower portions of the housing 66, the upper
end of said screw comprising an open-top bear
ing 68 in which shaft 69 is journalled, said shaft 10
carrying guide roll 6. A bevel gear 10 is keyed
to shaft 65 within housing 66 and meshes with a
cooperating bevel gear 1I which is threadedly
mounted upon screw 61. The arrangement is
such that upon rotation of sprocket wheel 64, 15
bevel gear 1I is rotated and being threadedly
engaged with screw 61, said screw is moved up
wardly or downwardly. It can readily be seen
therefore that one end of roll 6 is therefore
moved upwardly or downwardly. Hence, when 20
web or felt I creeps` laterally from a predeter
mined aligned position, palm 41 actuates mecha
nism which causes one end of roll 6 to be moved
upwardly or downwardly. The shaft 61 at the
opposite end of roll 6 is pivoted in a swivel bear 25
ing (not shown) whereby roll 6 may be canted
from its normal horizontal position by upward
or downward movement of screw 61.
This ac
tion of roll 6 tends to shift the web or felt I back
30
to its proper position of alignment.
A spur gear 12 is also mounted-upon shaft 28
and is rotated when wheel 21 is moved by either
pawl 58 or 59 and, consequently, spur gear 12
and sprocket wheel 62 also mounted upon shaft
28 move in unison. Therefore, whenever the end 35
of roll 6 is moved upwardly or downwardly to
return web or felt I to desired position, spur
gear 12 is rotated. Spur gear 12 meshes with a
cooperating larger spur gear 13 mounted upon
shaft 14 which, in turn, is journalled in bearing 40
15 carried by frame I3. A worm pinion 16 is
also mounted upon shaft 14 and engages with
worm wheel 11 which is mounted upon one end
of shaft 18. At the opposite end of shaft 18 a
disc 19 is positioned which is provided with a
circumferentially arranged series of apertures
80. A screw 8I is positioned in one of the aper
tures 80, all of which are internally threaded so
that they may receive the screw 8|. An arm 62
is pivotally connected to arm 26 of the U-shaped
member 22, the opposite end of said arm being
provided with a slot 83. The end of arm 82
having slot 83 is provided with a series of spaced
apertures 84 through which cotter-pins 85 may
be positioned. Arm 82 normally extends sub
stantially horizontally from arm 26 and screw
8| may be positioned through slot 83.
When the web o_r felt I shifts thereby causing
ratchet Wheel 21 to be rotated and in turn caus
ing gear 12 to be rotated, said gear drives spur 60
will engage the 'ratchet teeth 68 or 6I as the
case may be, and move wheel 21 upwardly to
gear 13, worm pinion 16, worm wheel 11, shaft
18 and disc 19. Consequently screw 8I is moved
within slot 83. To prevent abnormal shifting or
raising or lowering of roll 6, cotter pins 85 may
65 downwardly as viewed in Fig. 2.
' The spring upon shaft 54 tends to keep palm
so as to limit the movement of screw 8I within
22, said member is also reciprocated vertically
and, consequently, either pawl 58 or pawl 59
41 in contact with the edge of the web I if said
webtends to move away from said palm. If
the web moves toward the palm at a greater rate
70 than the web shifting mechanism Canbperate,
spring 50 permits palm 41 to flex and therefore
prevents injury to thek web or palm.
Shaft 28 upon which ratchet Wheel‘ 21 is
mounted carries at its end sprocket wheel 62
.75 which upon being rotated by movement of wheel
be positioned through appropriate apertures 94 65
slot 83.
It can readily be seen that if disc 19 is
rotated to too great an extent, pin 8I contacts
one of the cotter pins 85 and prevents motion
of the U-shaped member in one direction or the 70
other. The gearing arrangement is such that
if the mechanism tends to move roll 6 by engage
ment of pawl 58 with ratchet teeth 6D and this
movement becomes excessive, disc 19 will rotate
in a clockwise direction, as viewed in Fig. 2, and 75
2,136,705
screw 8| will contact one of the cotter pins,
namely the one to the left of the screw, thereby
moving the U-shaped member 22 andcausing
`disengagement of pawl 58 from teeth 6U. If
the roll 6 is moved excessively in the opposite
direction, that is, when pawl 59 repeatedly en
gages teeth 6l, disc 19 will rotate in a counter
clockwise direction until screw 8| contacts cot
ter pin 85 and causes disengagement of pawl 59
comprises in combination, a guide roll having its
surface in contact with said web, a bearing for
supporting one end of said guide roll, means for
moving said bearing, means for driving said bear
ing moving means, .a contact member movable
in response to lateral movement of said web
and an engaging member for connecting said
driving means to a source of mechanical power,
a connection between said Contact member and
from teeth 6i by rocking the U-shaped member
said engaging member for connecting said driv
in a counter-clockwise direction. By the provi-_
sion of the coil spring 5U the operation of disc
ing means to said source of mechanical power
19 which prevents excessive or extremely pro
longed engagementof either pawl 58 or 59 with
the respective ratchet teeth 60 or 6l, palm 41
is prevented from injuring the web or felt I since
said spring will ñex before injury to. the web
or to the mechanism results.
.
In the event that the web or felt I is to be
20 cleaned or for any other reason it is desired to
L)
3
10
in response to movement of said contact member,
means synchronized with said driving means,
and means connecting said synchronized means
and said engaging member for limitingA move 15
ment of said engaging member.
2. A device for guiding a substantially> ver
tical moving web which comprises in combina
tion, a guide roll having its surface in contact
with said web, a bearing for supporting one end 20
render the device herein described inoperative,
of said guide roll, means for moving said bearing
that is, to prevent upward or downward move
ment of the end of roll 6, a hairpin-shaped mem
ber 86 may be inserted in apertures 84 in arm
82 >adjacent each side 0I screw 8l. It can readily
be seen that inasmuch as the disc 19 is posi
tively connected and responsive to movement of
in a substantially vertical direction, means for
driving said bearing moving means, a Contact
member movable in response to lateral move
ment of said web and an engaging member for 25
connecting said driving means to a source of
mechanical power, a connection between said
contact member and said engaging member for
connecting said driving means to said source of
mechanical power in response to movement oi 30
said contact member, means synchronized with
said driving means, and means connecting said
synchronized means and said engaging member
the ratchet wheel 2ï, the U-shaped member 22
cannot be maintained in rocked position for any
30 substantial period of time.
In other words, plac
ing ratchet wheel 21 into operation causes the
U-shaped member 22 to disengage from ratchet
wheel 2i and render the latter inoperative.
I claim as my invention:
1. A device for guiding a moving web which
for limiting movement of said engaging member.
WILLIAM C. NASH.
35
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