US1327225A

US1327225A - Press-roll arrangement for paper-making machines

Info

Publication number: US1327225A
Application number: US102194A
Authority: US
Inventors: James K Darby
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-06-07
Filing date: 1916-06-07
Publication date: 1920-01-06
Anticipated expiration: 1937-01-06

Description

J. K. DARBY.

PRESS RoLL ARRANGEMENT FOR PAPER MAKING MACHINES.

APPLICATION FILED JUNE 7,1916. I

I Patented Jan. 6,1920.

JAMES K. DARBY, 0F CHILLICOTHE, OHIO.

PRESS-ROLL ARRANGEMENT FOR PAPER-MAKING MACHINES.

Specification of Letters Yatent.

Patented Jain, e, aeao,

Application filed June 7, 1916. Serial No. 102,194.

To all whom it may concern:

Be it known that 1, JAMES K. DARBY, a citizen of the United States, residing at Chillicothe, county of Ross, State of Ohio, have made a new and useful invention in Press- Roll Arrangements for Paper-Making'Machines, of which the following is a specification.

This invention relates to paper making machines, and particularly to the press roll arrangement thereof.

The object of the invention is to provide a paper making machine which is simple in structure, and which reduces the amount of space occupied by the present types of machines.

Further objects of the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination, location and relative arrangement of parts, all as will be more fully hereinafter set forth, as shown by the accompanying drawing, and finally pointed out in the appended claims.

Referring to the drawing Figure 1 is a diagrammatic View in elevation of the common type of Fourdrinier paper making machine.

Fig. 2 is a similar View of a similar structure embodying my invention.

Fig. 3 is a similar view of a modification of the structure shown in Fig. 2.

The same part is designated by the same reference numeral wherever it occurs throughout the several views.

In the Fourdrinier type of paper-making machines, as diagrammatically illustrated in Fig. 1, it is customary to run the paper between a pair of rolls 1, of substantially equal diameter, a-second pair of press rolls 2, of substantially equal diameter, a third pair of press rolls 3, of substantially equal diameter, over a receiving roll 5, and on to the drying rolls of the machine. The paper is fed into and carried past the respective press rolls on felts 6, operating over felt rolls 4. The action and purpose of the pairs of rolls 1, 2, 3, is to press out the water from the pulp sheet, which water, after being pressed out,

is sponged up by the felt carrier. It is obvious that the paper should pass between the pairs of rolls in order that the water may be pressed out of the pulp thereby. It is among the special purposes of mypresent invention to provide means for pressing the aper so as to remove the water therefrom,

employing press rolls for this purpose, and to secure the usual or necessary number of press roll applications to the paper to expel or press out the water'therefrom, while at the same time greatly reducing the number of press rolls employed for this purpose, without altering the etliciency of the presslng action of the rolls, thereby reducing the space occupied by the machine, the weight thereof, and the cost. In Fig. 2 I show my invention as combining the pairs of press rolls 1 and 2 of Fig. 1, and reducing the number of rolls by one. In this arrangement Iprovide the top press roll 8, and the bottom press roll 9, in the usual manner, and position a third or auxiliary press roll 10, also in pressure contact with the top press roll 8, retaining substantially equal diameters of all of the rolls and substantially equal pressures between the rolls 8 and 9, and the rolls 8 and 10. In op eration, the paper 11, travels on or is carried by the felt 6, first between the two press rolls 8 and 9, and then between the two press rolls 8 and 10, and thence on to the press rolls 3, receiving roll 5, &c., as above explained. It will be observed that the felt carrier 6 is on one side only, and that is the under side of the paper at the point of ap plication of the pressure of the pairs of

rolls

8, 9, and 8, 10. It will thus be seen that by this arrangement, I eliminate one of the press rolls of the ordinary Fourdrinier type of paper-n1aking machine, without eliminating the number of press roll applications to the paper, and without requiring cooperating pairs of carrying felts at the points where the paper is subjected to the pressing action of the rolls. It will also be seen that I retain substantial equality of diameters of the press rolls, and secure substantially uniform degrees of pressure between the rolls.

In Fig. 3, I show my invention as combining the press rolls 1, 2, and 3, of Fig. 1. In this arrangement I provide the

rolls

8, 9 and 10, as in Fig. 2, and position above the roll 8 a similar roll 12, so that the paper presses between the rolls 8 and 9, then between the rolls 8 and 10, and finally between the rolls 8 and 12. It will be seen that the paper in efl'ect, passes between three sets of press rolls, but in reality only four rolls are employed instead of six It will be seen further that inasmuch as it is customary and the eiiicien-t practice to have a complete set of felt and felt rolls for each lll (I may be driven positioned in contact with air of press rolls, I am enabled to eliminate all but one felt web and one set of felt rolls, though my invention is not to be limited in this respect as it is obvious that independent felts may be employed if desired. I The

respective press rolls

8, 10, and 12, by friction, or otherwise, and I have shown the same as being driven by gears carried thereby, which mesh with a' gear carried at one end of the roll 8. My invention, however, in its broad scope is not to be limited to this feature.

Having now set forth the-objects and nature of my invention, and having described a diagrammatic illustration of the same, to which, however, my invention as defined in the claims is not to be limited, what I claim as new and useful, and of my own invention, and desire to secure by Letters Patent, is,

1. In a paper making machine, the combination with a pair of press rolls adapted to allow the paper to pass therebetween, and positioned in contact with each other whereby oneof said rolls is frictionally rotated by the other and an auxiliary press roll adapted to cooperate with one of said press rolls to form a second pair of press rolls in the path of travel of the paper all of said .rolls being of substantially the same diameter and mechanically operated means cooperating between said auxiliary press roll and 'one of said first mentioned press rolls for rotating said auxiliary press roll.

2. In a paper making machine, the combination with a pair of press rolls adapted to allow the paper to pass therebetweemand each other where- 40 by one ofsaid rolls is frictionally rotated by the other and an auxiliary press roll adapted to cooperate with one of said press rolls to form a second .pair of press rolls in the path of travel of the paper all of said rolls being of substantially the same diameter and mechanically operated means actuated by one'of said press rolls for rotating said auxiliary press roll.

3. In a paper making machine, the combination with a pair of press rolls adapted to allow the paper to pass therebetween, and positioned in contact with each other whereby one of said rolls is frictionally rotated by the other and a plurality of auxiliary press rolls each cooperating with one of said first mentioned press rolls to form a series of presses in the path of travel of the paper all of said rolls being of substantially the same diameter and mechanically operated means actuated by one of said press rolls for rotating each of said auxiliary press rolls:

4. In a paper making machine, the combination with a pair of press rolls adapted to allow the paper to pass therebetween, and positioned in contact with each other whereby one of said rolls is frictionally rotated by the' other and a plurality of auxiliary press rolls ea'ch cooperating with one of said first mentioned press rolls to form a series of presses in the'path of travel of the paper all-of said rolls being of substantially the same diameter and independent gears actuated by one of said press rolls for rotating all of said auxiliary rolls.

In testimony whereof I have hereunto set my hand in the presence of the subscribing witnesses, on this 31 day of May A. D., 1916.

JAMES K. DARBY. Witnesses:

NELLIF. V. TUTTLE, HORATIO C. OLAYPOOL.