Improvements in Machinery or Apparatus for the Drying of Paper or other Materials Capable of like Treatment.
Year: 1897

page_text: Date of Application, 9th Feb., 1897-Accepted, 15th May, 1897
COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for the Drying of Paper
or other Materials Capable of like Treatment.
I HENRY CLAY KING, of 361 Lowell Street, Lawrence, in the State of
Massachusetts, one of the United States of America, Grocer do hereby declare the
nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
My invention relates to improvements in machinery or apparatus for drying.
paper or other materials capable of such treatment, such as have heretofore been
devised in which the web of paper or fabric as it passes around the drying
cylinders and over the guide rolls, automatically regulates the supply of steam, by
the contraction and expansion of the paper accordingly as the latter is dried to‘a
greater or less degree.
The mechanism which thus controls the steam supply, moves the cut-off valve
with an initial movement due to the stretching or shrinking of the paper, and then
continues the movement of the cut-off valve by reason of the rotation of the
adjacent guide-roll.
It is one object of my present invention to make the operation of the cut-off
valve positive and definite, depending solely upon the web of paper, or other
material, which is being dried, and not depending on the rotation of the
guide-roll.
In connection with the mechanism for attaining this positive and definite
movement mentioned, I provide means whereby the operator may adjust with the
utmost nicety the degree of movement transmitted to the cut-off valve.
In order to make this capability of adjustment very delicate, I have preferably
made all the parts relatively adjustable, including a compound adjustment for the
tension device, and this, taken in connection with the other adjustments renders the
device extremely sensitive.
Further advantages of my invention will appear in the course of the following
detailed description, which, taken in connection with the accompanying drawings,
fully sets forth my invention.
In the drawings,
Fig. 1, in side elevation, shows a sufficient portion of a drying machine with my
improvements attached thereto in operative position to render the operation
thereof understood.
Fig. 2 is an enlarged detail in side elevation of one form of my improved
attachment.
Fig. 3 is a corresponding detail in end elevation.
Fig. 4 is a broken horizontal section taken on the dotted line 4 of Fig. 2.
Fig. 5 is a fragmentary detail in side elevation of another form of my
invention.
Figure 6 is a horizontal section thereof similar to that shown in Fig. 4 and taken
on the line 6, Fig. 5.
The frame A, the steam-heated drying cylinders B, the guide-rolls C, C¹, the
steam conducting pipes D, and the valve mechanism E, are of any usual or desired..
construction, the paper passing from left to right, Fig. 1, around one heating
cylinder and over the two intermediate guide-rolls C, C, and thence around the
second drying cylinder and on to the other machinery for further treatment.
My invention has to do with the mechanism shown in connection with the guide-
All

page_text: Referring particularly to Fig. 2, a designates a bracket, preferably provided
with suitable means as the bolt holes a¹ for securing the same in the desired location
on the drying machine...
b
At its upper end the bracket a receives a bearing 6 on which is mounted the
supporting arm con which the guide-roll C¹ is journaled, the journal bearings c¹
thereof being preferably longitudinally adjustable on the arm c, as by means of the
T-recesses c, herein shown.
This supporting arm c may be either journaled directly on the bearing b,
as shown in Fig. 6, or it may be journaled on the bub d, as shown in Fig. 4.
Extending downwardly is the tension lever e notched at its outer edge to receive
the eye of the free end of the tension device.
This lever e is shown as preferably secured in rigid adjustment on the hub d, or
it may be formed integrally with the arm c, as shown in Fig. 5.
In the former instance, the arm c being mounted to turn loosely on the hub d is
capable of adjustment relatively to tension lever e, by means of the set screw c³.
The tension device consists preferably of one or more chambers f¹, two being
shown in the present instance, to receive suitable coiled springs f2, which are held
therein at one end by the closed end of the chambers, and at the other end by the
adjustable thumb nuts f³ screwed onto the outer ends of the spindles f*, carried
by a cross-head 7 of the outer free end of the tension device, a central guide
spindle f being also preferably provided in order to ensure precision of movement
of the tension device..
5
The chambers f₁ are pivotally mounted at f' on the lower end of an arm f³,
Fig. 2, or on the fixed bracket a, Fig. 5.
Referring to Figs. 3 and 4, it will be seen that the upper end of the arm f³ has
a boss centrally mounted on the bearing b, the latter being provided preferably
with a shoulder 6 bearing against the end of the boss f³, and holding the arm f³ in
rigid contact with the bracket a by means of the nut b².
a,
This arrangement renders the support of the various moving parts rigid and yet
leaves the parts beyond the shoulder 6 free to turn easily on the bearing b.
In order that all the parts may be adjusted relatively to the bracket I have
provided the boss f° with an annular T-recess 10 to receive the heads of the
bolts.f", so that by loosening the bolts and also slightly loosening the nut 62,
all the parts may be turned into the desired position relatively to the bracket a.
This arrangement permits the placing of the bracket in any position found most
convenient on any of the usual drying machines, the remaining parts of the
mechanism then being adjusted as required to correspond with the necessary
position of the bracket.
At its outer end the bearing shaft carries a valve operating lever g free to turn
thereon.
This lever is connected to move in unison with the arm c carrying the guide
roll c¹.
⋅
In the present instance of my invention the connection therewith is by means of
a worm sector g¹ and a worm g³ the latter being mounted in the hanger d'extending
from the hub d, Fig. 3, or formed integrally with the arm c, Fig. 6, and being
provided with suitable operating means, herein shown as the hand-wheel w.
The worm sector gl may be formed in one piece with the lever g in the form of a
bell-crank, as shown in Fig. 2, or it may be independent thereof, as shown in
Fig. 6, the lever g in the latter case being adjustably clamped thereon by suitable
means, as by the bolt g³.
At its 'free end the lever carries the valve operating rod h, the latter being
- connected therewith by means of the link h¹ pivoted at 2 and 3, and having a
projection to receive the latch 9 in locking engagement therewith, the latter
being pivotally mounted at 95 on the valve operating lever 9 and normally held in
locking engagement, as shown in Fig. 2, by means of the spring 9 bearing against
the extended end g' thereof.
The latch g normally holds rod h under the control of the mechanism above

page_text: described, but by raising the catch end thereof the rod h may be disengaged and
the valve entirely closed.
Referring to Fig. 5, it will be seen that I have made provision for taking up the
wear of the worm gear g², in order that the adjustment by means thereof may be
absolutely accurate, this provision being shown as a coiled spring s bearing at one
end against the hand wheel w and at its other end against the outer end of the
adjacent bearing, thereby tending always to maintain the worm tightly against said
bearing, and also holding the worm against accidental rotation."
Referring to Figs. 3 and 4, it will be noticed that the hub d is provided with a
spur d extending therefrom into a slot f12 in the boss fº, thereby limiting the
relative swinging movement of the arm e.
This provision is shown in Fig. 5 as made by opposite lugs a² formed on the
arm a to limit the movement of the stub arm or spur e projecting from the bearing
of the arm c.
In operation as the paper passes around the drying cylinders B, more or less
moisture is dried out of the web of paper, according to the temperature of the
cylinders due to the amount of steam admitted thereto. Accordingly the paper
stretches or contracts to a corresponding degree as it passes over the fixed.
intermediate guide-roll C and the swinging guide-roll C, the latter maintaining an
even tension on the paper or other material being dried according to the degree of
tension maintained in the springs f².
It will be evident, therefore, that as the paper contracts the guide roll C¹ and its
supporting arm c, will swing correspondingly toward the left Fig. 1, and will
instantly transmit precisely the same movement through the valve controlling arm g
to the valve mechanism. E, thereby cutting down the amount of steam admitted to
the drying cylinders.
As the latter becomes cooler and the paper, therefore, loses tendency to shrink
and becomes more yielding to the springs of the regulating device, the latter
will recover its normal position, the guide-roll C₁ swinging back towards the
right and transmitting the same definite movement through the arm
lever g to the valve controlling rod h and correspondingly admitting more
steam.
c and
If it is found that the apparatus does not work evenly the same can he
adjusted with absolute accuracy and to the most perfect degree of nicety by
changing the relative positions of the different parts, to accommodate the
apparatus to different materials being dried, or, if it be paper, to different
qualities of paper and to different kinds of drying machines, conditions of the
atmosphere, etc.
This adjustment can usually be accomplished to the degree required simply by
turning the hand wheel w and rocking the lever g slightly up or down relatively to
the arm c and tension lever e.
The operation of the mechanism may be further regulated, however, by
loosening the set screw and changing the relative direction of the arm cand
lever e, or, in case of the device illustrated in Fig. 6, the relative angle of the
worm sector g' and the lever g may be varied as desired by loosening the
bolt g³.
The tension is under absolute control by means of the nuts f3 bearing against
the tension springs, and also by reason of the capability of shifting the free end f
of the tension device towards or from the fulcrum pivot of the lever e.
If it is desired to set the machine so that it will be impossible for the steam
valve to be opened or closed beyond a certain fixed limit, it may be accomplished
by shifting the arm slightly relatively to the bracket a so as to change the
position of the spur d² relatively to the stops formed by the respective walls of the
slot / 12.
This same object may be attained in the form illustrated in Figs. 5 and 6, by
changing the position of the worm sector g¹ relatively to the spur c*.
For some purposes also, it is desirable to vary the amplitude of swing of the
>

page_text: guide-roll c', in order to permit a greater or less degree of stretching of the fabric,
being dried, and provision for this is made by moving the bearings c¹ longitudinally
of the arm c, as shown in Fig. 2.
While I have herein shown and described the preferred forms of my invention,
yet I do not limit myself to the present embodiment thereof, inasmuch as many
changes may be resorted to without departing from the spirit and scope of my
invention.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is —
1. In a machine or apparatus for drying paper or other materials capable of the
like treatment, a swinging arm, a guide roll journaled thereon, a swinging valve-
controlling lever adapted to control by its movement the steam supply of the
machine, means to cause said arm and said lever to swing together in unison,
whereby the lever receives positive and definite movement corresponding to the
movements of the arm and roll, and means for changing, at will, the angle of said
arm and lever relatively the one to the other, substantially as described.
2. In a machine for drying paper, or other materials capable of the like
treatment, a swinging arm, a guide-roll journaled thereon, a swinging valve-
controlling lever adapted to control by its movement the steam supply of the
machine, means to cause said arm and said lever to swing together in unison,
whereby the lever receives positive and definite movement corresponding to the
movements of the arm and roll, and hand-operated means for adjusting the
position of the said lever relatively to the said arm, for varying the regular normal
swing thereof, substantially as described.
3. In a machine for drying paper or other materials capable of the like
treatment, a supporting bracket, a swinging arm pivotally mounted thereon, a
guide-roll journaled on said arm, a valve controlling lever also pivotally mounted
on said bracket and constituting with said arm substantially a bell-crank, and
adapted to control the steam supply of the machine, and a suitable adjusting device
connecting the arm and lever for changing the angular relation of the two at will,.
substantially as described.
4. In a machine or apparatus for drying paper or other materials capable of like
treatment, a supporting bracket, a swinging arm pivotally mounted thereon, a
guide-roll journaled on said arm, meaus for adjusting said roll longitudinally of said
arm, a valve-controlling lever also pivotally mounted on said bracket and con-
stituting with said arm substantially a bell-crank, and adapted to control the
steam supply of the machine, and a suitable adjusting device connecting the
arm and lever for changing the angular relation of the two at will, substantially
as described.
5. In a machine for drying paper or other materials capable of like treatment, a
supporting bracket, a swinging arm pivotally mounted thereon, a guide-roll carried
by the arm, a tension lever mounted independently of said arm and adjustable
relatively thereto on said bracket, means to rigidly connect the arm and tension
lever together, a tension device connected to the tension lever, and a valve-
controlling lever also mounted on said bracket and constituting with said arm
substantially a bell-crank, and adapted to control the steam supply of the machine,
substantially.as described..
6. In a machine for drying paper or other material capable of like treatment, a
supporting bracket, a swinging arm pivotally mounted thereon, a guide-roll carried
by the arm, a tension lever mounted on the bracket, a tension device connected at
one end to the tension lever, an arm adjustably secured to the bracket and supporting
the other end of the tension device, a valve-controlling lever mounted on the
bracket and constituting with said swinging arm substantially a bell-crank and
adapted to control the steam supply of the machine, and means to adjust on said
bracket all of said other mentioned parts, substantially as described.

page_text: 7. In a machine for the drying of paper or other material capable of like
treatment, a supporting bracket, a swinging arm pivotally mounted thereon, a
guide-roll carried by the arm, a tension lever mounted on the bracket, a tension.
device connected at one end to the tension lever, a valve controlling lever pivotally
mounted on the bracket and adapted to control the steam supply of the machine, and.
an adjusting device, one member of which is arranged to be rigidly connected to
said arm and the other member of which is arranged to be rigidly connected to said
valve-controlling lever, said two members being relatively inovable by means of
a hand wheel and gear mounted on one member and co-operating parts on the
other member, substantially as described.
8. In a machine for the drying of paper or other material capable of like
treatment, a supporting bracket; a swinging arm pivotally mounted thereon, a
guide-roll carried by the arm, a tension lever mounted on the bracket, a tension.
device connected at one end to the tension lever, a valve controlling lever pivotally
mounted on the bracket and adapted to control the steam supply of the machine,.
and an adjusting device, one member of which is arranged to be rigidly connected
to said arm and the other member of which is arranged to be rigidly connected to
said valve controlling lever, said two members being relatively movable by means.
of a hand wheel and gear mounted on one member and co-operating parts on the
other member, and means to shift the position of either or both of said members-
relatively to their said rigid connections, substantially as described.
ليم
1
17 1
1007
WM. BROOKES & SON,
55 & 56 Chancery Lane, London, Agents for the Applicant..