US337080A - Stock-regulator for paper-mach ines - Google Patents

Description

(NoModel.) V

GJPOSPTAP. STOCK REGULATOR .POR PAPER MACHINES. A No, 337,080. Patented' ManZ, 1886.

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(No Model.)

. G. POTTER.

STOCK REGULATOR PoR PAPPA MACHINES.

Patented Mar. 2, 1886.v l

. WITNESSES VIAJVEAI/)EOR www@ Arana* erica.

CHARLES POTTER, OF H OLYOKE, MASSACHUSETTS.

STOCKREGULATOR FOR -PAPER-MACi-HNES.

SPECIFICATION forming part of Letters Patent No. 337,080, dated March 2, 3.886A

Application tiled December 12,1884.

Serial No. 150.153. (No model.)

To all whom it may concern:

Be it known that I, CHARLES POTTER, a citizen of the United States, residing in Holyoke, Hampden county, Massachusetts, have invented n ew and useful Improvements in Stock Regulators for Paper Machines, of which the following is a specitication, reference being had to the accompanying drawings.

,The invention relates to machinery for the manufacture of paper from pulp; and the object of my invention is to accurately7 gage the flow of stuff to the paper-machine in order to secure uniformi-ty in the thickness and weight ofthe paper.

Heretofore a movable gate has been used to regulate the flow, and the paper weighed at intervals to determine the adjust-ment of the gate. The paper is," however, liable to vary between these adjustments on account ofthe constant variation in thedensity of thc pulp. An apparatus has also been devised adapted to cause the automatic adjustment of the gate by the variations in the weight ot' the pulp as it is fed to the machine by sustaining the'feedbox upon a scale in such manner that the box rises and falls accol'ding tothe varying weight ofthe stoclcand the outlet is opened and closed by the variations in the position of the feedboX. This construction is objectionable, as the gate as used in this device closes the outlet in such manner that the free operation of the scale is prevented, and the tendency is with some stock to create an intermittent flow rather than the uniform ow to be desired. A iiexible connection has also been made between the supply and feed box. This is objectionable, as the flexible material will vnot at all times retain the same degree ol ilexibility,

and consequently constant adjustment of the scale is required to compensate for these variations. In short, ithas not been found possible heretoforeto obtain an accurate, delicate, and automatic adjustment or variable feed, which will prevent variations in the weight of the paper. To this end therefore is the object of my invention.

In the accompanying drawings, in which similar letters ot' reference indicate like parts,

5o Figure l is a side elevation of my device.

Fig. 2 is a plan View: Fig. 3 is a front elevation with aportion ofthe box E broken away, and Fig. 4 is a perspective.

The construction and method of operation will be readily understood on reference to the drawings. From a stock-chest, B, the stock flows through a spout, C, to the chute or pan D, and from the pan D to the box E. The box E is divided into two compartments by a movable partition, a, adapted to swing from side to side, and to be locked in position by a set-scre\v, I), which passes through the box E into a'. nut which slides in a slotted segment, 0, attached to the top of the partition o. This partition separates the stock as it flows from the pan D, one portion ilowing to the compartaient at the rightand oneto the left of this partition Aor gate. Each compartiment is prol vided with a conduct-pipe, f and f. The

pipef leads to the machine, and the pipe f leads back to the stoclvchcst. The pan D is supported by the arms or supports c d, to which it is pivotally connected, and the arm dis adapted to be adjusted, as shown, thus allowing ot' the changing 'ot' thcincline ofthe pan D. These arms are secured to the crosspiece e, and this crosspiecc is supported upon knife-edges g upon the scale-arms H, which in` turn are supported u`pon knife-edges L upon ya support, J. A graduated scale or weight-arm,l H, projects, as shown, and is provided with a weight, t', adapted to be moved upon the arm. A stop, j, prevents the arm l-I from passing a given limit. The

'weighted arm or pendulum It' is pivotally attached to the lower side oll the pan D. rihis pivotal connection is shown in Figs. l and 3. This connection allows the pan to be adjusted to the desired incline, while the weight keeps 'the sides in the same planewz'. e., a line on the bottom of the pan D at right angles to a line drawn through the center ofthe pan from the closed to the open end will be maintained in a horizontal position without regard to the movement of the scale or supA porting beams. y

The edge oi' the separating-partition forms for the pan two outlets, the stock flowing through one outlet entering the compartment at the right of the Scparatingpartition, and the stock from the other outlet entering the compartment atthe left. If, now, the edge of n A g 337,080l

the partition a were perpendicular, then the vertical movement of the pan would not affect the amount of the iow of pulp to the two compartments, as the size of each of the out-` lets of the pan would be the same regardless of its elevation; butwith this partition standing at an angle it will be seen that the lowering of the pan exposes a greater portion of its outlet to the compartment m and a lesser portion to the compartment n. Thus the variation in the elevation of the'pan will vary the'si'ze of its two outlets, that'which is taken from one being given to the other, and the stock flowing from the pan will be conducted to the two compartments whose line of separation is formed by the partition a,the proportion of stock entering these compartments being governed by the elevation of the pan D. If, now, the paper-stock ilows from the stock-chest B to the pan D, the pan being adjusted to the desired incline to give the requisite rapidity of flow, and the'weight upon the graduated arm H being properly placed to balance and maintain tbe scale-bean1 in an approximately horizontal position, when the desired weight of stock is flowing through the pan, and the partition or gate a being set at an incline, it will be seen that so long as the weight of stock flowing through the' pan D is the sume, the pan will remain in the same position', and that the division ofthe stock by the partition a. will not vary; but that il' the weight of stock be increased it will cause the pan to descend, thus increasing the flow of stock to the compartment m, and lessening the low of stock to the compartment n.

As before stated, the stock from the compartment n is conducted to the machine,while the remainder, or that which flows to the coni-v partinent m is conducted back to the stockchest. By this arrangement variationsin the weight of the stock may be readily detected and the weight of stock which forms the paper be automatically controlled. A slotted piece,

`o,is connected withthe partition or gate a, and the set-screw b engages with it. The gate may thus be readily adjusted to any incline and iirmly held in place. The` knife-edges are turned upward to prevent the clogging which might occurii' they were turned downward. A

I It will readily be seen that very many modifications may be made without departing from my invention,` and I do not confine myself to the exact construction shown.

Having therefore described my invention, what I claim is 1. A pan or box, D, and box E, having partition a, in combination with the scale and machine is varied by a change in position of box D, substantially as shown.

4. In combination with the feed mechanism of a paper-machine, a chute, D, adapted to be changed in position by variations in the weight ofthe stock flowing through it, and a receiving box or compartment having a receiving-opening oftapering form, whereby the iiow ot' material to the receivingbox is varied by a change in the position of thechute D without changing the amount 4or rapidity of the'ilow of pulpfrom the chest, substantially as shown.

5. rlhe combination, in apaper-machine, of a chute, D, adapted to be varied in its incline, and a supporting-balance and a box, E, with gate a, substantially as shown.

6. In a paper-making machine, a conducting-chute, D, hav'ing a weight suspended from it, whereby the chute is maintained in the desired position, substantially as shown.

ing ar'ms c d, weighted pendulum k, balancevlever H, box E, and gate a, substantially as Witnesses:

HAMILTON S. SMITH, ALLEN WEBSTER.

.90 7. The combination of chute D, support-l

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