USRE464E - Machine for drying and pressing paper - Google Patents

Description

J. N ORTH; DRYING AND PRESSING PAPER.

No. 464; Reissued May 19, 1857.

f pressed, thus again occupying much time and expensive machinery. "Jobtain uniformity'in drying and pressing and {expeditiously prepare printed paper for folding isthe object of my invention.

:paper-itis necessary by my plan to convey the tween-the chests, to be dried, and then con- .UNITED STATES PATENT "OFFICE.

JOHN NORTH, OF MIDDLETOWN, CONNECTICUT.

MACHINE -FOFLDRYING AND PRESSING PAPER.

Specification forming part of Letters Patent No. 17,050, dated April 14, 1857; Reissue No. 464, dated May l9, 1857.

To all whom it may concern Be it known that I, JOHN Non'rn, of Middletown, in the county of Middlesex and State of Connecticut, have invented a new and useful Machine for Drying and PressingPrinted and Stained Paper; and I do hereby declare that the following is a full and cleardescrip- I tion thereof, referring to the accompanying drawings, in which- Figure 1' is a perspective representation of the complete machine. Fig. 2 is a detached view of one section of the cylinder case or cover. Fig.3 is a modified machine-in which the drying apparatus is in one line. Y

The present well-known method of dryin and pressing printed and stained sheets of paper is expensive and inconvenient, as' large space is required to hang the sheets up in, and much time is occupied in the drying and labor in the repeated handling of the sheets. Now, when the printed paper is dried it is placed, each sheet singly, between pasteboard and To avoid all this and Fordryin g and pressing printed and stained sheet-son tapes, or their equivalents, between tw" or'more hollow heated chests or plates as near as practicable without coming in contact ortoiiching the chests on their passage beveying them forward between two calenderin grollers, heated or otherwise, where they are pressed smooth, ready for folding.

My machine will occupy but little space, and performs its work with; great expedition and but one handling.

In constructing my machine I make a suitable frame, a, Fig. 1, on which the two cylinders or press-rollers b b are hung. The upper half of theuppcr cylinder and the lower half of the lower cylinder are covered with a case that is so adjusted and formed as to closely fit said cylinders around the edges and leave a space above. The lower edge of the semicircular case has a flange, 0, that projects inward to the cylinder. (This is clearly represented in Fig. 2.) Within the case are three (more or less) cylindrical brushes, 0 c c, that revolve l where it is retained therein on being closely fitted on its edges to the cylinders. The brushes are made to revolve against the notion of the cylinders and keep the surface of the cylinders c'lean during the process of pressing the printed sheets. The brushes remove the oily and other foreign substances from the cylinders, and the sawdust (orother proper substances) absorbs and retains them within the case. Thus are the cylinders kept continuously clean, so as not to smut or soil the printed sheets on passing through them to be pressed. Without the cleaning apparatus the cylinders would soon become soiled and spoil the printed or stained sheets on passing through them to be pressed, to prevent which is the object of myinvention.

On the frame a, Fig. 1, back of the cylinders 11 b, the drying apparatus is affixed; This consists of a series of four hollow steam'chests placed at proper distances apart, to admit the sheet of paper to pass between, free and unob structed. At each end of these chests 0 there are rollers f, placed around which endless by means of the tapes or belts g, care being taken to so arrange the belts as not to touch the parts that are printed. The chests e are heated, being hollow, by steam or hot air-the usual way well known .in heating, plates or chests. The rollers are driven by gears J K L, &c. The paper enters the drying apparatus at the point 1,and in. the direction indicated by it, and comes out at the point 4 perfect] y dry and ready to pass directly between the calender-rolls l) b, where'it ispressed ready for folding or use otherwise. The pressure is regulated by means of the screw X.

The machine may be driven by the crank J, allixcd to the axes of the lower cylinder 1).

The upper cylinder revolves by its contact with the lower one or the material between them. After the sheet -is pressed itis conveyed from the cylinder 1; by the roller it ontothe table 0, suspended on the ends of levers p, the fulcra of which are at R. filo these levers are attached spiral 'sprin gs 7 at thepoints s.- These springs regulate the height-of the table 0 properly to receive the sheetsof paper as-they are pressed,.and the weight .of each of the sheets depresses the table sutlicientl y for the succeeding one. s I inclose the drying apparatusas combined in a thick wooden case,

orsoineother suitablenon-conductor, so as to retain the heat within. 7 p i H avin g thus full 5 described my machine for dryingund pressing paper, what i claim as new therein, and desire to secure by Letters Patent, isr 1. The ll'lCftS-lng of the cylinders in part and attaching ot' brushes inside of said cases, and

the a jn'ilication 0f sawdust or other proper substance for'the purpose of cleaning the outer surface of the pressing cylinders, as specified.

2. Combining two or more hollow steam or heated chests at proper distances apart so as to admit of the sheets of paper to pass between said chests, free and unobstructed, by meansof endless belts orth'eir equivalents, for the purpose specified.-

3. Incasing the outer surfaces ot'the heated chests, as combined,-by non-conducting substances, for the'purpose of retaining the heat,

4. In combination with the pressing'cylindcrs, as herein described, the drying apparatus consisting of heated chests, between which the sheets of paper are passed on tapes or their equivalents without touching or dragging thereon, as specified JOHN NORTH.-

VVitnesses J. 0, PEDRIOK,

JOHN S. HOLLINGSHEAD.

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