US405044A - manahan - Google Patents

Description

(No Model.\ 2 Sheets-Sheet 1.

G. MANAHAN a; H. GADE. v APPARATUS FOR COATING PAPER.

No. 405,044. Patented June 11, 1889-.

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(No Model.) 2 Sheets-Sheet 2.

G. MANAHAN & H. GA DE. APPARATUS FOR COATING PAPER.

No. 405,044. Patented June 11, 1889.

WITNESSES: I l/VVE/VTOI? .v @fiw y M 1 mg ATTORNEY invention.

UNITED STATES PATENT OFFICE.

GEORGE MANAI-IAN AND HENRY GADE, OF NEWV YORK, N. Y.

APPARATUS FORiCOATlNG PAPER.

SPECIFICATION forming part of Letters Patent No. 405,044, dated June 11, 1889.

Application filed April 5, 1889- Serial No- 306,067. (No model.)

To and whom it may concern:

Be it known that We, GEORGE MANAHAN and HENRY GADE, both of the city, county, and State of New York, have invented a new and useful Improvement in Apparatus for Coating Paper and other, Materials, of which the following is a full, clear, and exact description.

This invention relates to apparatus for applying to the one or under side of a web of paper or other flexible material compositions of various kinds in a fluid form; but the invention is mainly intended to be used in applying a preservative and weather-proof composition to a web of paper for making sheathing or building paper; and the invention will here be described more particularly with refcrence thereto.

The invention consists in certain novel constructions and combinations of parts in an apparatus of the above description, substantially as hereinafter described, and pointed out in the claims, whereby provision is made for varying the amount of the acting smearing-surface, according to the thickness or texture of the paper or material being coated, and for removing surplus composition from the latter without any special or varying adj ustmcnt of the scrapers used in such removal.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a longitudinal vertical section of so much of an apparatus for coating a web of paper on its one side with afluid composition, as is necessary to explain our Fig. 2 is a plan of the same, and Fig. 3 a longitudinal view and end view of one of the scrapers used in the apparatus detached.

A is the vat containingthe fluid or composition b to be applied to the one or under side of a web of paper B. This vat and the roller 0, from which the web of paper is taken, and the take-up roller D at the opposite end of the apparatus may be of the usual or any suitable construction, and the same may be supported at the required height from the ground upon any suitable frame E. It is common in such and analogous machines to apply the fluid compositionin the vat t0 the one or under side of the web of paper by causing the latter to run over a smearing or delivery roll arranged to dip into the composition in the vat and afterward to pass the smea'redor coated web through or over scrapers to remove the surplus composition from the web; but in this our improved apparatus we use a series of smearing, coating, or delivery rollsthat is, two or more, three G G G here being shownthe same being arranged one behind the other between the paper and take-up rollers, all dipping into the fluid composition in the vat or in separate vats, if desired, and we erect between the last of such delivery-rolls and the take-up roller D a rack of fixed scrapers H H for removing the surplus composition from the web. This rack is composed of opposite side pieces I I, which may be attached to the frame E at and over the rear end portion of the vat and arranged to extend some height above the coating or delivery rollers G G G and preferably curving or inclining in an upward direction toward the opposite end of the vat, and of a series of independent fixed scrapers H H, placed across from the one side piece or I support I to the other, and arranged one above the other at suitable distances apart and extending above and to or below the level of the smearing-rolls. ture of this rack surplus material removed from the web by the scrapers H or any one of them will fall back into the vat A without interfering with the other scrapers.

The scrapers H H are not independently and vertically adjustable and essentially dilfer from a series of vertically-adjustable scrapers arranged side by side below the level of the smearing device, and all acting in concert upon the web and requiring independent and special adjustments; but our scrapers occupy fixed positions one above the other, thus requiring no special or nice adjustment to adapt them to the web, and do not act in concert upon the latter; but they are so arranged that the web B in its passage from the paper-roller Otto the take-up roller D may,

By the inclination or curvaaccordingly as it is run over a higher or lower scraper H, be caused to come in contact with either one or more of the coating or delivery rollers G G G as shown by full and dotted lines in Fig. 1. In this way orby these means, and by simply entering the take-up end of the web between an adjacent pair of scrapers at different heights, the web B is made to come in contact with either only the first coating-roll G or with it and the next coating-roll G, or with both of said rolls, and, if necessary, with a third one G or more, and thus the web may be exposed to a varied extent of working smearing-surfaces to suit different thicknesses or textures of paper, a thin paper usually requiring less exposure than a thick one to produce the necessary coating or absorption of the fluid composition.

The web B may be conveniently introduced between any one pair of the scrapers to work over one of them by doubling the web at its end passing between the scrapers over from opposite sides, and introducing the point of such doubled end through a recess (1, Fig, 3, in the middle of the length of the scrapers, when or after which the web may be readily conducted to the take-up roller D.

The take-up roller may be driven in the usual or any suitable manner. Such roller as well as the paper-carrying roller, vat, and a rotating smearing or coating device, are well-known elements in machines for coating paper and other material with wax and various other substances or compositions. In

this our apparatus, however, we find that we can dispense with independent tension-rollers to act upon the web.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the Webcarrying roller 0, web take-up roller D, the vat A, and two or more smearing or coating rolls proj ecting down within the vat and arranged one behind the other, of a rack of fixed scrapers H H, arranged one above the other and extending above and to and below the level of the smearing-rolls, essentially as and for the purposes herein set forth.

2. The combination, with the vat A and the series of smearing or coating rolls arranged to work therein, of the fixed scrapers H H, arranged one above the other, and in overhanging relation with one another above and over the vat, substantially as specified.

3. The scrapers H, constructed with a recess d intermediately of their length and arranged one above the other, as described, in. combination with the seriespf smearing-rolls, the vat, and the web-carrying and take-up rollers, essentially as and for the purpose herein set forth.

GEORGE MANAI'IAN. HENRY GADE.

\Vitnesses:

A. GREGORY, G. SEDewIoK.

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