US233282A - Machine for waxing paper - Google Patents

Description

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G. H. RICH. Machine for Waxing Paper. No. 233,282. Patented Oct. 12, I880.

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2 Sheets-Sheet 2. G. H. RICH. Machine for Waxing Paper.

No. 233,282. Patented Oct. 12,1880.

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NITED STATES PATENT OFFICE.

GEORGE H. RICH, OF LYNN, MASSACHUSETTS.

MACHINE FOR WAXING PAPER.

SPECIFICATION forming part of Letters Patent No. 233,282, dated October 12, 1880.

- Application filed November 26, 1879.

To all whomt't may concern Be it known that I, GEO. H. RICH, of Lynn, Essex county, Massachusetts, have invented a certain new and useful Improvement in Machines for Waxing Paper, of which the following is a full and exact description, sufficient to enable any one skilled in the art to which my invention belongs to make, construct, and use the same.

My invention relates to certain improvements in machines for waxing paper; and it consists in certain combination of parts, as will be hereinafter more fully described.

In the following description reference is made to the drawings accompanying the same, in which- Figure 1 is a plan view of the machine embodying my invention. Fig. 2 is a vertical longitudinal section of Fig. 1, taken near the middle of the figure. Figs. 3 and 4 are detail views. Fig. 5 is a plan view of a modified form of the mechanism shown in Figs. 1 and 2. Fig. 6 is a vertical longitudinal section of Fig. 5. Figs. 7 and 8 are detail views of parts shown in Figs. 5 and 6.

A is the frame of the machine, to which the operative parts are attached. B is a roll, journaled in one end of the frame, upon which the paper to be treated is wound in a long continuous strip or broad ribbon. The paper, after leaving this roll, is led over several smooth rods or spindles, a. a a, by which a certain degree of frictioniis imparted and the surface is freed from wrinkles. From the last spindle, a, the sheet passes into the trough (1, containing the wax, which is kept in a melted condition by means. of the heat imparted from a steam-jacket, D, beneath. In this trough are placed two posts, E E, at each end of said trough. In these posts are journaled two rolls-one a lower roll, F, and the other an upper roll, F wh ich may, if desired, be of somewhat less diameter than the roll F. A third roll, F, is journaled in rocking bearings connected with the machine by a stud, e, which enters a depression in the bottom of the trough, the upper side of the bearings being connected with the posts E E by means of a bolt, f, having its extremity threaded and provided with a spiral spring, g, coiled upon the bolt and confined by a washer, h, resting against the head of the bearing d, and by the enlarged head of the bolt. By turning the bolt it is screwed into the post E, and the spring g is compressed, pushing the roll F against the roll F with a force proportioned to the power of the-spring. The roll F is placed in the same horizontal plane as the roll F, so that both revolve partly in and partly out of the liquid wax contained in the trough. The upper roll, F, is journaled in movable boxes G, which rise and fall in the slotted portion of the posts E E, the journal-boxes G being supported by a vertical screw-threaded rod, a, having a thumb-nut, G, through which the rod passes freely, and an adjusting-nut, G. The nut G is threaded into the top of the post, and is bored sufficiently to allow a spiral spring, 9, to be placed on the rod a. It is evident that by turning the nut G the rod a will be raised, the spring g compressed, and the roll F will be raised from the lower roll, F. When the tension of the spring is suitably adjusted the roll may be again lowered until it is in contact with the lower roll, F, by simply turning down the thumb-nuts G.

The paper sheet B is carried from the spindle a beneath the roll F then, passing between it and .the roll F, it is carried over the latter and between it and the upper roll, F. From this point it is led directly to a receiving-roll, placed at any suitable distance--as, for instance, a roll, at the farther end of the machine.

By means of the bolts f and springs g the pressure of the roll F upon the roll F is adjusted, while the degree of pressure exerted by the roll F upon the roll F is determined by means of the nuts G and G and the spring g.

Motion is communicated to the operative parts by a pulley, I, on the shaft of the roll F. The two remaining rolls, F and F, are revolved by their frictional contact with the roll F.

A cord-pulley, K, is mounted upon the end of the roll-shaft, and by means of an elastic belt or cord, L, this pulley is geared with the reel B. By this means motion is given to the reel to enable it to take up the paper strip as it is delivered by the waxing-rolls, while at the same time the increased speed of the periphery of the take-up roll B (said increase being due to the increase in size as the paper accumulates thereon) will not exert a sufiicient tension to tear the paper strip, the elastic band L permitting the driving-pulley to travel faster than the driven pulley.

Steam is admitted to the jacket D through an induction-pipe, m, and discharged through a waste-pipe, m.

The rolls F F F" are metal, brass or some similar composition being preferable.

As the rolls are heated by contact until they are the same temperature as the melted wax, no trouble is experienced from the wax adhering to them.

The operation of the machine is as follows: The paper strip being led through the trough and between the rolls in the manner already described, the roll F" is brought into contact with the roll F, and sufficient pressure is caused by turning up the bolts f, to insure a close and equal pinch upon each and every part of the paper sheet throughout the whole line of contact. The upper roll, F, is then screwed down closely upon the roll F, and motion is imparted to the shaft of the roll. By the revolution of the rolls the paper is fed through the trough, and as it passes between the two rolls F and F the wax is spread equally upon both surfaces, while the roll F, to the action of which it is immediately subjected, forces the wax into the fiber, and at the same time removes all superfluous wax from the paper. As fast as the paper arrives at the point where the reel is placed it is wound upon it, the distance to that point being sufficient, considering the rate of speed at which the strip travels, to enable the wax to become so dry that it will not stick when the paper is wound upon the reel.

In waxing long strips of paper, as the piece is led directly from the waxing-rolls to the reel, there is no difficulty experienced from the paper adhering to the rolls. It is, however, frequently necessary to wax short pieces, no one of which is of sutiicient length to reach the reel before the other end leaves the rolls. It is also impossible to feed these short pieces under the roll F, which has to be removed when the strip is inserted, and as the ends of the short pieces are very apt to stick to the rolls and wind around them, I have found it necessary, in order to wax them upon my machine, to make certain modifications in the construction described above. These modifications are illustrated in Figs. 5 to 8 of the drawings, inclusive, and I will now proceed to describe the same.

In the first place I remove the metal roll F (shown in Figs. 1 and 4) by taking out the screw-bolts n n and lifting off the upper part of the post E. In its place, and journaled in the same bearings, I substitute a roll composed, with the exception of its central shaft, wholly of felt, as seen at F Fig. 8. Around the upper roll I carry a series of endless bands or cords, H, at regular intervals, extending to and passing around a smooth-surfaced spindie, M, which is mounted upon slotted supports at. These cords are retained at equal intervals apart by a series of very shallow channels or grooves formed on the surface of the spindle m. The cords run in these grooves, and as the upper roll revolves they travel slowly in the direction of the arrow in Fig. 6. A similar series of endless cords or hands is arranged so as to extend from a revolving shaft, N, just in front of the felt roll F", over a series of rolls. N N N, a gravity-roll, N, being placed in about the center of the lower part of said cords. This roll is guided by slotted bearings 0, formed in the frame of the machine, whereby the roll is steadied and retained in place, while at the same time its whole weight rests upon the cords and imparts the proper degree of tension to them. The machine is now ready for use in waxing short pieces. However, should it be desired, the side pieces, A, (shown in Fig. 2,) which carry the two rolls a a, may be wholly removed, and the chute A may be substituted. By this means the small sheets of paper may be fed with more ease and certainty.

The operation of the machine is as follows: Motion, being imparted to the shafts of the roll F, (this being the felt roll substituted for the metal roli F,) is communicated through the gear K and pinion K to the pinion K on the end of the spindle or roll M, thus setting in motion the series of endless cords H. A sheet of paper being now pushed forward in the chute A, it is seized by the rolls F and F and passed between them, receiving a com plete coating of wax as it goes. The series of cords H prevent the paper sticking to the upper roll, and the lower roll being made of felt, there is, owing to the nature of the material, no tendency on the part of the paper to adhere to it. As the paper issues from between the rolls it falls upon the traveling cords or bands 11*, which are caused to travel with a speed equal to the movement of the paper while passing between the rolls. By these cords the sheet is supported until it is clear of the rolls, after which it is carried forward upon the cords and delivered at the end of the machine, as at P, Fig. 6. The interval of time occupied in moving over the space between the waxing-rolls and the point P is sufficient to dry the wax and preclude the possibility of the pieces sticking together.

It will be seen that by my invention substantially the same mechanism is used in both the machine shown in Figs. 1 to 4, inclusive, and the modified form illustrated in Figs. 5 to 8, inclusive, the principal difference being in the addition of the devices described, whereby the paper is prevented from sticking to the rolls and the travelers, whereby it is supported after leaving the waxing-rolls.

The main feature of my invention is found in the peculiar method which I have discovered, whereby I am able to apply the wax to both surfaces equally and to remove the surplus wax and save it without using scrapers or any analogous devices. This consists in passing the paper through the wax and then submitting it, while the wax is still liquid, to severe pressure, either between rolls or equiva lent mechanism, in the manner already described.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. The machine for waxing paper herein described, consisting of a steam-heated trough, two rolls revolving therein in contact with each other, a third roll placed above the second of the trough-rolls, and devices for adjusting the pressure of said rolls, all as set forth.

2. The combination, in a machine for waxing paper, of a trough for the wax having a steam-chest beneath two rolls revolving in said trough, athird pressure-roller placed above one of said rolls, devices for regulating the pressure of said rolls, and reels for discharging and receiving the continuous paper strip, as set forth.

3. The combination, in a machine for waxing paper, of a steam-heated trough, a felt roll revolving in said trough and partly submerged in the liquid wax, an upper metallic pressure-roll resting on said felt roll, a series of endless bands passing around said metallic roll and around a spindle placed at a suitable distance therefrom, and a series of traveling bands extending from a point immediately in front of the waxing-roll to the delivery end of the machine, as set forth.

4. The combination, with the trough (J, having a steam-chest, D, of the roll F, mounted in rocking bearings d, pressure-adjusting devices f 9, lower stationary roll, F, upper pressure-roll, F, slotted posts E, boxes and rods a, nuts G G, and spiral springs g, all as set forth.

5. The combination of the felt roll F pressure-roll F, endless bands H, spindle M, slotted supports m and travelers H all as set forth.

6. The combination of the felt roll F, the pressure-roll F, the endless bands H, and the steam-heated trough, all as set forth.

7. The combination of the two pressurerolls F F, the cord-pulley K, the reel B, and the elastic belt L, as set forth.

8. The combination, with the roll F", of the journal-blocks 01, having stud e, the trough 0, having a depression to receive said studs, the threaded bolt f, spiral spring g, and post E, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEO. H. RICH. Witnesses:

CHAS. B. TILDEN, OSCAR Low.

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