US1445782A - Paper-making machine - Google Patents

Description

Feb. 20, 1923.

F J. MARSHALL.

PAPER MAKING MACHINE,

FILED OCT. 3, I921.

Patented f sh 2U, I23.

FRANK J. MARSHALL, 0F JEAS'IUN, PENNSYLVANIA.

- rarnn-aranrne nacrn'n Application filed Uctober a, 1921. semen in roaaaa.

T 0 all whom it may concern:

, Be it known that I, FRANK J. MARSHALL, a citizen of the United States, residing at Easton, in the county of Northampton and.

State of Pennsylvania, have invented a new and useful Improvement in Paper-Making Machines; and I do hereby declare the following, when taken in connection with the accompanying drawing, and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawing constitutes part of this application, and represents a diagrammatic view illustrating a paper-making machine embodying my invention.

This invention relates to improvement in paper-making machines, and particularly to machines for making light-weight paper. In the more general arrangement of papermaking machines, if light-weight papers are being produced, difficulty is experienced in transferring the paper from the couch rolls to the first press rolls without changing the form and practically the function of one of the couch rolls.

The object of this invention is to provide means by which the paper may be removed from the machine wire by which it has been passed through the couch rolls, and delivered to the first ress felt passing through the first press rolls, and the invention consists in the construction and arrangement as hereinafter described and particularly recited in the claims.

In carrying out my invention, I employ the usual couch rolls 5 and 6, between which a machine wire 7 passes, but in this case the wire 7 is carried forward, around an idler 8 and thence rearward beneath the lower couch roll 6. 9 and 10 represent the first press rolls between which the first press felt 11 passes, but as it comes forward beneath the roll 10, it is carried around an idler 12 and thence rearward between the rolls 9 and 10. The idlers 8 and 12 are spaced apart, and between them is a transfer-belt 13 of wire or felt, which runs over guide rolls 14, 15, 16, 17, 18, 19 and 20, and beneath a retch roll 21. The guide rolls are so arranged that the belt 13 comes into contact with the upper surface of the paper strip 22, which has been carried through the couch rolls on the wire 7, and below the belt 13, at a point in the rear of the idler 8, is a suction box 23 of usual construction, which will draw the paper from the wire 7 and cause it to adhere to the transfer-belt 13, by which it 1s carried to the first press felt and by that felt through the press rolls 9 and 10.

IVith this construction, the usual solid couch rolls may be employed, so as to couch out as much of the water as possible. The paper is then picked off the wire from the bottom side and carried to the press felt, thus permit-ting a very thin paper to be produced on paper machines of standard construction.

I claim:

1. In a paper-making machine, the combination with the couch rolls and first press rolls of a wire passing between the couch rolls to a point forward thereof, a press felt carried to a point in rear of the press rolls and thence forward through them; a trans fer-belt arranged between the couch rolls and press rolls and brought into contact with the wire at a point in rear of where its direction is reversed and in contact with the wire in the reversed direction, whereby a strip of paper carried by the Wire will be removed from the lower face of the wire, after it has been reversed in direction, and carried forward to the press felt.

'2. In a paper-making machine, the com-' bination with the couch rolls and first press rolls of a wire passing between the couch rolls to a point forward thereof, a press felt carried to a point in rear of the press rolls and thence forward through them; a transfer-belt arranged between the couch rolls and press rolls and brought into contact with the wire at a point in rear of where its direction is reversed and in contact with the wire in the reversed direction, whereby a strip of paper carried by the wire will be removed from the lower face of the wire,

after it has been reversed in direction, and from the under-side of the machine-wire 10 carried forward to the press felt, and a sucand transfer it to the press felt.

tion box arranged below the Wire and adapt- In testimony whereof, I have signed this ed to draw the paper therefrom to the transspecification in the presence of two subscribfer-belt. ing Witnesses.

3. In a paper-making machine, the com- FRANK J. MARSHALL. bination with the machine-wire and press Vitnesses: felt of a transfer-belt arranged between M. W. Lo'rr,

them and adapted to pick a web of paper G. F. Lorr.

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