US484748A - Copying-press - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

E. P. VERRILL.

. COPYING PRESS.

No. 484,748. Patented 061;. 18, 1892.

(No Model.) 2 Sheets-Sheet 2.

E. P. VERRILL.

COPYING PRESS.

No. 484,748. Patented 001;. '18, 1892.

UNITED STATES PATENT OFFICE.

EDGAR F. VERRILL, OF SAN FRANCISCO, CALIFORNIA.

COPYING-PRESS.

SPECIFICATION forming part of Letters Patent No. 484,748, dated October 18, 1892.

Application filed October 2, 1891. Serial No. 40 7,566. (No model.)

To all whom it may concern.-

Be it known that I, EDGAR ,F. VERRILL, a citizen of the United States, residing in the city and county of San Francisco, State of California, have invented an Improvement in Copying-Presses; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to that class of copying-presses in which rollers are employed.

It consists in the novel arrangement of the rollers, both those for copying and those for feeding, a novel adjustable moistening-roller adapted to be thrown into and out of contact with the copying paper at will, and the means for operating said roller, the novel water-supply roller for acting on the moistening-roller, and other details of construction and arrangement, all of which I shall hereinafter fully describe, and specifically point out in the claims.

The objects of my invention are several. These are attained by the different features of novelty, and may be briefly described as, first, a perfect and sufficiently-long pressure on the papers to insure a good copy; second, a durable and effective water-supply roller; third, the avoidance of wetting or keeping wet the copying-paper when the machine is not in use, thereby preventing its disintegration; fourth, the moistening of the copyingpaper only when in immediate use and by the same power which effects the operation of the machine; fifth, the guiding of the copying-paper through such a course after it has received its impression as will prevent, the paper copied from following it and will separate the two; sixth, the cutting of the impressed duplicate or copying-paper when necessary; seventh, the keeping of the copying-paper safely taut under its feed, and other minor objects, which will appear fully in the course of the following description.

Referringto the accompanyingdrawings for a more complete explanation of my invention, Figure 1 is an elevation taken from one side of the machine. Fig. 2 is a vertical longitudinal section of the same. Fig. 3 is an elevation taken from the other side of the machine.

A is the frame. In the upper portion is mounted the main copying-roller B, Fig. 2. Below this and a little to one side is the second copying-roller C, which bears on roller B, and immediately below is the third copying-roller D, which bears on roller C. These three rollers form the pressing mechanism for the paper and by which the impression is made. In the front top of the frame is a water-tank E. In this is located the watersupply roller F, and in contact with this roller isthe moistening-roller G, which is adapted to be brought down upon the main copyingroller B.

H is an idler-roller bearing against the front of roller B forremoving the surplus water from the copying-paper, pressing the air-bubbles out, and smoothing the paper.

I isa guide-roller in the lower front portion of the frame.

J and K are feed-rollers for drawing the copying-paper through and keeping it taut. In the back portion of the frame is a drum L, on which the roll of copying or tissue paper M is carried.

N is a feed-table at the front of the machine to carry the paper 0 to be copied and from which it is fed.

From Fig. 2 it will be seen that the courses of the paper are as follows: The tissue or copying paper, winding forwardly from the bottom of the roll, passes up to and over the main copying-roller B. In its course over said roller it is moistened by the roller G. It thence passes down between roller B and idler H, the latter removing its surplus moisture and pressing it out smooth. Thence it passes between roller B and the second copying-roller C and thence between roller 0 and the third copying-roller D. Thence it passes down to and makes an abrupt turn backwardly under guide-roller I, and thence through between the feed-rollers J and K, by which it is drawn along and kept taut. The paper 0 to be copied is pushed in from table N and passes between rollers B and C, and thence between rollers C and D and down to the guide-roller I, about which its end fails to make the abrupt turn, being thereby directed forward, and thus at this point separating from the paper M. -The copying is done between the rollers B, C, and D, where the two papers travel in contact, There are two points of pressure, one between rollers B and C and the other between rollers C and D. This double pressure is for the purpose of insuring a perfect copy by maintaining the pressure sufiic-iently long and giving the ink time enough to soak into the tissue-paper.

The object of the guide-roller I, located as shown, is to provide for such an abrupt turn of the positively-moving tissue-paper that the paper to be copied will fail to make the turn, and will therefore separate from the tissuepaper.

The power-transmitting mechanism is as follows: 1? is a shaft, to one end of which is secured a crank-handle 12, Fig. 1. Upon this shaft is a pinion 10'. This meshes with a gear b on the shaft of roller B. This gear meshes with a pinion con the shaft of roller 0. Roller D is driven by frictional contact with roller 0. Now, referring to Fig. 3, it will be seen that upon the other end of the shaft of roller Dis a large pulley (1. Upon the end of roller J is a smaller pulley j and a smaller pulley 7c is on the end of roller K. From pulley d a single belt Q, driven from the pulley D and bent upon itself, as shown, extends to and around pulleys j and 7c in a proper direction to effect the rotation of said pulleys j and 7c and their rollers in opposite directions. The object of having the pulley dlarger than ,pul-

leys j and k is to drive the feed-rollers J and K faster than the pressure-rollers above, thereby keeping the paper M taut, and to avoid tearing the paper the belt Q has to slip or yield, and to insure this it is preferably made of elastic material.

All the rollers over which the paper passes are covered with suitable material to prevent the paper from sticking to them.

The moistening-roller G is carried between swinging arms R, mounted on the shaft or axis of the water-supply roller F, so that said roller G in being raised from or depressed into contact with the main roller B shall always be in contact with the water-supply roller F.

Pivoted to the arm R is a pawl r, the free end of which engages the pinion ,p of the crank 19. Bearing under the bases of arms R are friction-springs r. In the use of tissue paper for copying, or, in fact, in the use of any copying-paper, it is not desirable to keep the moistening-roller in contact with the paper when the machine is not in use. The object is to prevent the paper from being disintegrated or tending to become so by being long wet. Now the roller G, being mounted on swinging arms R, can be raised out of or lowered into contact with the paper at the will of the operator. This raising and lowering is by the means shown rendered automatic. The crank 19 is turned in the direction of the arrow to operate the machine. The pinion p then slips freely by the pawl r, and said pawl merely rests upon it and allows the arms R to fall sufiiciently to carry the moisteni'ng-roller down into contact with the paper on roller 13;

but when the use of the machine ceases the crank 19 is turned in the other direction sufficiently to cause the pinion p to engage the pawl, and thereby to force said pawl back and raise the arms R, thus lifting the roller G out of contact with the paper. When ready for use again, the crank being turned in the first direction, the roller G drops again into position for action. The spring r, pressing on the arms R, steady them in any position.

A novel feature lies in the construction of the water-supply roller F. It is made of a body or core of any suitable material, which is covered with spunk. (Represented by f in Fig. 2.) This spunk is procured in sheets and is cemented to the body of the roller. I have found that it works well in practice. It is not injured by being in water all the time, it is soft and yet firm enough, absorbent without being too spongy, and supplies the roller G evenly and fully, yet not with an excess of moisture.

The roller G is covered with felt or cloth g or other suitable absorbent material.

Under the table N are springs n, the ends of which bear lightly on the roller 0 and prevent the paper from following around said roller.

The drum L of the copying-paper roll has its axle resting freely in slotted bearing-arms a of frame A, and the roll is held well together and its folds guided and directed by a follower consisting of a shaft S, mounted in the slotted arms a and resting on the roll, said shaft being provided with end flanges s, which overlap the ends of theroll. The follower is drawn down by spring s, Figs. 1 and 3. It is advisable at times to copy separate sheets on a single broad piece of tissue-paper. In such case in order to divide the copies I place on the roller K a central cutter which opcrates in an opposing groove in roller J and divides the paper longitudinally as it passes between the rollers; but as this cutter is not always needed I provide for throwing it out of action by dropping roller K far enough to remove the cutter from the groove of roller J. It will be seen that the ends of the shaft of roller K are mounted in slots k in frame A, and are held up to place by a latch 70 By releasing this latch the roller K can drop down.

The several rollers are held to place and contact by suitable spring or cushion adj ustments. Roller O is held against roller B by means of a sliding bearing 0, having a socket, in which is a pin a, surrounded by a spring 0 bearing between its head and the base of the socket. A screw c bears .on the head of thepin and adjusts it. Similarly roller D is held to its contact with roller 0, as is shown, by the screw 01 and intervening pin d spring 01 and sliding bearing d.

Roller J is adjusted by screw j and intervening devices. Idler H is likewise adjusted by screw h.

Having thus described my invention, what IIO I claim as new, and desire to secure by Letters Patent, is-

1. In a copying-press, the combination of copying-rollers, between which the papers pass and are pressed, feed-rollers for one of said papers, and the guide roller I, about which said paper abruptly turns, whereby the other paper separates from it, substantially as herein described.

2. In a copying-press, the combination of copying-rollers, between which the papers pass, feed-rollers for drawing the copying-paper from the copying-rollers, a guide-roller I, about which the copying-paper turns and is separated from the other paper, and powertransmitting connections for driving the feedrollers faster than the copying-rollers, consisting of the large pulley on one of the copying-rollers, the smaller pulleys on the feedrollers, and the intervening slip or yielding belt, substantially as herein described.

3. In a copying-press, the combination of the copying-rollers, the feed-rollers, and the means for operating them, consisting of the crank having the pinion, the gear I), pinion a, pulley d, pulleys j and 7c, and the single belt Q, passing around the pulleys d, j, and 70, substantially as herein described.

4. In a copying-press, the combination of a roller over which the copying-paper passes, a water-supply roller, and a swinging moistening-roller adapted while remaining in contact with the water-supply roller to be thrown into or out of contact with the copying-paper,substantially as herein described.

5. In a copying-press, the combination of roller B, over which the copying-paper'passes,

a water-supply roller, the moistening-roller G, and the swinging arms R, in which said moistening-roller is mounted, substantially as herein described.

6. In a copying-press, the combination of copying-rollers, a movable moistening-roller, mechanism for operating the copying-rollers, and a mechanism operated thereby for moving the moistening-roller into and out of contact with the copying-paper as the machine is started and stopped, substantially as herein described.

7. In a copying-press, the combination of the swinging moistening-roller, the powercrank of the copying-rollers, the pinion of said crank, and the pawl operated on by the pinion to throw the moistening-roller into and out of contact with the copying-paper as the machine is started and stopped, substantially as herein described.

8. In a copying-press, the combination of the copying-roller B, the moistening-roller G, the swinging arms carrying said roller, the crank for operating roller B, the pinion of the crank, and the pawl r, connectedwith the swinging arm and operated on by the pinion, substantially as herein described.

9. In a copying-press, the combination of the roller B, water-supply roller, moisteningroller, arms R, carrying the moistening-roll er, crank 19, and connections to operate the roller B, pinion p of the crank, and the pawl 13 connected with the swinging arm and operated on by the pinion, substantially as herein described.

In witness whereof I have hereunto set my hand.

EDGAR F. VERRILL.

Witnesses:

S. 1-1. NOURSE, J. A. BAYLESS.

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