US2060945A - Paper making machine - Google Patents

Description

1936- E. J. MELLENTINE PAPER MAKING MACHINE Filed Dec. 11, 1955 Inven lot e n a 1L n e w M E q By @5110 M g Altorneys Patented Nov. 17, rest estates PAPER MING MAC Edward John Melientine, Kapnslzasing,

Ontario, Canada Application December ill, M35, Seriai No. 53,969

3 Glaims. (Cl. 3M8) This invention relates to improvements in paper making machine, the general object of the invention being to provide means for drying the paper side of the dryer felt so as to insure a more even drying of the paper.

Another object of the invention is to provide means for removing wads and the like, caused. by the paper webs breaking, said wads causing damage to the dryer felts and other parts of the machine.

This invention also consists in certain other features of construction and in .the combination and arrangement of several parts, to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claims.

The drawing shows a diagrammatic view of a drying part of a paper making machine constructed in accordance with this invention.

In this drawing, the upper row of drying dryers is shown at l and the lower row at 2, the two rows being staggered relative to each other and the paper web A passes first partly around the first dryer of the lower row and then upwardiy partly around the first dryer of the upper row,-then partly around a dryer of-the lower rowand so on throughout the unit, as shown in dotted lines. The dryer felt on the upper row is shown at B anda roller 3 is placed adjacent each side of each dryer for causing the felt to contact the paper web as it passes over a dryer. After passing around the rearmost roller 3 the felt is caused to pass to the. front of the unit by means of the rollers I, one or more of which is offset upwardly as shown at 4 to stretch the felt. The upper reach of the felt iscausedto pass partly around a dryer 5 for drying the felt.

A dryer 6 is located adjacent the dryer 5 and after the felt passes over a part of the third dryer i it passes around a roller .1 and then around the dryer 6 and then passes downwardly around the roller 3 which is located between the third and fourth dryers I. This roller 3 and the dryer 6 are so arranged that the felt contacts another portion of the third dryer as shown. After passing over the roller 3 in rear of the fourth dryer the felt passes over the two spaced rollers 8 and then downwardly over the roller 3 located between the fourth and fifth dryers and in the space formed'by the felt passing over the rollers 8 are located steam .or hot air coils 9' which act. to further dry the felt.

The felt for the lower row of dryers is shown at C and the dryer for the lower reach of this felt.

is shown at 5'. The dryer for this felt is shown at 5' and as it will be seen the felt after it passes partly around the first three dryers of the lower row passes around this dryer 6' and then upwardly partly around the fourth dryer.

ihe stretcher roller for the lower felt is shown at d" and this lower felt is caused to pass downwardly partly around the spacing rollers H which are spaced farther apart than are the rollers 02 which are located above the rollers ll. These rollers i2 form a pair of the rollers 3' which cause the lower felt to partly pass around the lower row of dryers. These rollers I 2 and the rollers l2 which cause the lower felt to pass around the conditioner dryer 6 are arranged as shown in the drawing. A trough i4 is located above the rollers ii so as to receive pieces or wads of paper breaking off from the web of paper so that said pieces or wads will not be carried along though the remainder of the dryers with the feltand pieces can be readily removed from the trough. If desired a second trough id may be placed above the dryer 6' and as many of the troughs can be used as desired and as many of the heating coils 9 can be used as desired.

The drawing shows a unit including six upper dryers and six lower dryers, the right end of the drawing showing two dryers and felts of a second unit. Of course, as many unitscan be used as desired or necessary.

Thus I have provided means for drying. the paper side of the upper and lower dryer felts and means whereby pieces of paper or the like breaking 03 the web will be removed and therefore not caused to travel on through the rest of the dryers with the web and felt, it being well known that such pieces of paper cause damage to the felt and certain parts of the machine.

If desired or necessary heating coils can be placed below the trough M to condition the felt and it is to be understood that the various loops can be located wherever desired.

What is claimed is:-

1. In a. paper making machine including upper and lower rows of heating dryers, dryer felts passing over the dryers, guiding rollers for said felts, a pair of rollers forming a loop in the lower felt between a pair of the dryers and a trough located in the space formed by the. loop for receiving particles of paper breaking off the web of paper.

2. In a paper making machine including upper and lower rows of drying dryers, dryer felts passing over the dryers, guiding rollers for said felts, a pair of rollers forming a loop in the lower felt between a pair oi the dryers and a trough located in the space formed by the loop torreceiving particles of paper breaking oi! the web of paper, a conditioner dryer around which felt passes from a point intermediate the row of dryers.

3. In a. paper making machine including upper and lower rows of drying dryers, dryer felts passing over the dryers, guiding rollers for said 10 felts, a pair of rollers forming a loop in the lower' felt between a pair of the dryers and a trough located in the space formed by the loop for receiving particles of paper breaking of! the web of paper, a conditioner dryer around which felt passes from a point intermediate the row of dryers, and a trough located in the space formed by the loop or the felt passing around said conditioner dryer.

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