Improvements in Equalizing Mechanism for Paper-winding Apparatus.
Year: 1890

page_text: [Communicated from abroad by CHARLES DARWIN BINGHAM, of Watertown, New
York, in the United States of America.]
Improvements in Equalizing Mechanism for Paper-winding
Apparatus.
I JAMES YATE JOHNSON of 47 Lincoln's Inn Fields in the County of Middlesex
Gentleman do hereby declare the nature of this Invention which has been com-
municated to me from abroad by Charles Darwin Bingham of Watertown New York
in the United States of America and in what manner the same is to be performed to
be particularly described and ascertained in and by the following statement:
This Invention relates to that part of, or that appendage to, a paper making machine
known as the "winder" which is the part where the finished paper is wound into rolls
of the desired width and diameter.
In all cases where the sheet of paper coming from the paper machine is divided
longitudinally for the purpose of making two or more rolls from one sheet, it is
necessary that each reel upon which the paper is wound should take the paper
from the slitters where the sheet is divided at absolutely the
speed.
same
rate of
Unless all the rolls are maintained at exactly equal diameters the different
surface speeds would produce different tensions in the sheets going on to the several
rolls.
It is obvious that if a roll of smaller diameter be revolved faster than one of a
larger diameter, so that both shall have the same peripheral speed, then the paper will
be wound upon each with the same degree of tension and the object of this invention
is to supply a device which accomplishes this result automatically.
This feature is not broadly claimed under this application as it is known that devices
have before been invented and used to attain the saine end. The main characteristic
of this invention is the arrangement of parts whereby the entire equalizing mechanism
for any desired number of rolls can be assembled and concentrated upon one and the
same shaft, thereby greatly economizing space and material.
The nature of this invention and the manner in which the same is or may be
carried into effect can best be explained and understood by reference to the accom-
panying drawings in which,-
Figure 1 is a plan, and
Figure 2 is a side elevation of the winding apparatus of a paper machine for four
rolls the portion of the frame which carries the slitters being also represented.
Figure 3 is a longitudinal axial section partly in elevation of the parts of the
improved equalizing mechanism.
Figure 4 is a side elevation partly in section of the main driving shaft, the parts
directly secured thereto, and the devices with which they are immediately.
associated.
Figure 5 is a plan of the pinion locking device, in connection with the pinions
which it controls.
Figures 3, 4, 5 are upon a scale larger than Figures 1 and 2.
Referring to Figures 1 and 2, M is the sheet of paper as it leaves the finishing rolls
of the paper machine. It passes between the slitters N where it is divided into four
strips of the desired width which strips are wound upon the reels 01 02 03 04 of any
suitable kind, power being communicated to the reels through couplings of any
desired form, which connect the shafts of these reels with the winder shafts P1 P2 P3 P4.
The said winder shafts are rotated from the main shaft S by means of chains and
sprocket wheels as shewn ; but these chains and sprocket wheels can be replaced by
gearing, belted pulleys or any other usual appliance for transmitting power. R is a
pulley to which the primary power is applied.

page_text: Thus far there is nothing new in the machine. I proceed now to a description
of the mechanism in which this invention is comprised, referring for this purpose more
particularly to Figures 3, 4 and 5.
Keyed fast to the shaft S and rotating with it, is the hub A having on
diametrically, opposite sides the counterbalance A¹ and the arm A² carrying the
pinions B1, B2, B³, B'.
The pinions B B are keyed to the shaft J which is journaled in the arm A²; the
pinion B engages with the pinion B³.
The pinions B3, B4, are fastened together, forming practically one pinion of
double width of face, revolving upon a stud K, having its support in the arm A² as
shewn.
The pinions B B engage respectively with toothed wheels C, C¹, the one (C) of
which is keyed fast to, or is formed in one with the sleeve D, and the other of
which (C) is keyed fast to, or is formed in one with the sleeve D¹. These two
sleeves DD are mounted independently of each other upon the shaft S, and can be
revolved freely thereon, except in so far as they are controlled or driven by the
pinions B2 B34.
To each of the sleeves DD' is keyed fast a hub a, similar to the hub A, except that
they are bored large enough to fit the sleeves D D', and like the hub A they are each
provided with a counterbalance a¹ and an arm a² carrying the same arrangement
of pinions marked as the arm A2 of the primary hub A.
In the drawing, the pinion 73 is not shewn, being hidden (as in Figure 3) by the
pinion which is in front of it. But, as already remarked with reference to
the pinions B3, B4, the pinions 63, 14 are practically one pinion of double width
of face.
Revolving freely upon the sleeves D, D', (except in so far as they are controlled by
the pinions 62, 6, are gear wheels E, (two upon each sleeve) which mesh the one
with the pinion 2 and the other with the pinion 64, the said gear wheels each being
fastened solidly to or forming part of a sprocket wheel F.
Each of these four sprocket wheels is connected by a chain to the winder
shafts P, PP³, P* respectively.
It will be noted that throughout this arrangement spur gears and pinions are made
use of, and this is preferred because such gears and pinions can be much more easily
and cheaply made than bevel gears and pinions. Still, if desired, the latter may be
used instead in which case in lieu for instance of the four pinions B', B2, B3, B4, there
would be journaled on the arm A2, upon a vertical axis, a bevelled pinion to engage
directly with the gear wheels (, C" which of course in this event would be
correspondingly bevelled.
By this arrangement all the equalizing devices for the several winder shafts are
assembled, supported and move upon one and the same driving shaft S. In this
system each sprocket wheel is a fulcrum for all the others, and, the size of the gears
being uniform, the power communicated from the shaft S to any sprocket
wheel will exactly equal that communicated from it to any other one of
the set.
If any three of the sprocket wheels be held fast while the shaft S is rotated.
the remaining one will revolve at four times the speed of the shaft; or if two be
held fast the remaining two will revolve at twice the speed of the shaft.
The outer sprocket wheels and their gears are kept from endwise movement on the
sleeves by collars G on the latter; and the sleeves in turn are similarly confined by
collars on the shaft S.
It is obvious that the same system may be extended indefinitely (that is to eight,
sixteen; or a greater number of sprocket wheels driving a corresponding number of
reels) by increasing the number of sleeves with the necessary- additional arms and
gearing, still using one central shaft S only.
to
If it be desired at any time with a four reel winder, such as that represented,
wind a less number of rolls than four, this may be done by locking one or more of
the pinions thus compelling the gears on each side of the revolving driving arm to
'

page_text: revolve as one. For this purpose a locking device is provided which preferably is of
the construction shewn in section in Figure 4 and in plan in Figure 5.
It consists of a pin p, capable of longitudinal and rotary movement in a barrel A³,
on the arm A. The inner end of this pin projects through the inner end of the barrel
and is shaped to fit into the spaces between the teeth of the pinion .B³.
The pin is pressed toward the pinion by a spiral spring s, in the barrel the said
spring encircling the pin p and being confined between the latter and the outer
end of the barrel. The pin is provided with a head or button by which it may be pulled
back out of engagement with the pinion; and it has on it a lateral projecting stud or
spline p', which moves in a groove p² in the barrel. When the pin is pulled
out far enough to bring the spline outside of the groove, it can be held in the
retracted position by turning it so as to throw the spline out of register with the
groove.
As soon as the spline is brought again into register with the groove, the pin is
free to again move inward into engagement with the pinion.
It is not recommended however that a four reel winder be used for winding three
rolls except temporarily, as it is obvious that such an arrangement winds one of
the rolls with the same tension as both of the others, or in other words with twice
the tension of either of the others. So for winding three rolls it is preferred to
supply a three reel winder which has the third reel driven by a gear and pinion
of such relative proportion to the gears and pinion driving the other reels, that the
third reel will have a tension upon the paper one half that of the other two, or the same
as either of the other two.
Having now particularly described and ascertained the nature of the said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
The combination with the primary driving shaft and the primary driving arm and
gearing carried by and revolving with the same of separate and independent sleeves
or tubular secondary shafts, mounted to revolve freely on the said primary shaft,
gears fixed to the said sleeves to engage with the gearing of the driving arm on the
primary shaft, secondary driving arms, one for each sleeve, fixed thereto, gearing
carried by the said secondary driving arms respectively, and gears-mounted to revolve
freely on the said sleeves and engaging the gearing carried by the secondary
driving arms, under the arrangement and for joint operation substantially as herein-
before set forth.
Dated this 3rd day of June 1890
J. H. JOHNSON & Co.,
Agents.