US1726873A - Beating engine - Google Patents

Description

Sept. 3, 1929. w. WERNER 1,726,873

BEATING ENGINE filed Jari. 2o, 1927 Patented Sept. 3, 1929.

l UNITED STATES 1,726,813 PATENT OFFICE.

WALTER WERNER, OF HOOSICK FALLS, NEW YORK, ASSIGNOR T THE NOBLE & WOOD MACHINE CO., 0F HOOSICK FALLS, NEW YORK, .A CORPORATION OF NEW YORK.

BEATING ENGINE.

Application filed January 20, 1927'. Serial No. 162,288.

My present invention relates to tub-beaters or beating engines such as are used in the i preparation of paper stock.

Some such devices now in use, are provided with means for extracting lined stock from the tub while the beating operation is being carried out, such being known as continuous beaters. In these continuous beaters, so called, any stock which may be carried over by the beater roll is thrown against a screening device which is adapted to'pass the fined parts thereof and permit it to enter a trough which discharges outside of the tub, the coarser portions of the stock, those which have not yet been reduced to the desired fineness dropping back, or being washed back into the tub where they will be subjected to further beating.

From the foregoing it will be understood that before any stock can be screened, and that part which passes the screen be extracted, the direction of iiow thereof must be reversed. In other words, the extracting will be done while the stock is movingin contra direction to the natural flow thereof through or around the tub, and it will be self evident to those familiar with the operation of beating engines, that but a small proportion of the stock which has been reduced to the desired lineness will be carried over by the roll and its direction of travel so changed that it will be thrown against the screen and a part thereof be extracted by this described, usual extractor; and that by far the larger portion of the fined stock will be discharged over the back fall and so be carried around and again passed under the beater roll.

The extraction of stock from a tub-beater or beating engine by this usual means is far from satisfactory, and the object of this invent-ion is to provide a continuous beating engine of high efficiency, from which the stock will be automatically extracted, over, or through the upper part of the curb of the tub of the engine, the extracting being done with or by the flow of the stock or while it is continuing its usual course about the tub; a further object being to simplify the screening means generally used, and to so arrange them that they are self clearing.

In the accomplishment of my objects I make use of a number of substantially usual units or devices, the invention lying in the combining of them in a new manner, and one which produces the desired results.

'Ihe units or devices which I use, and the manner in which I have combined them and so produced the desired results, is illustrated by the accompanying drawings, in which:

Fig. l is a side elevation of my improved continuous beating engine.

Fig. 2 is a side elevation, parts broken away of a modified form of the same.

Fig. 3 is a partial front elevation of my improved screening and extracting device.

The same reference characters refer to the same .parts throughout the several views, the drltwings being in a certain sense illustrative on y.

Referring to Fig. l of the drawings, it will be seen that the continuous beating engine here illustrated comprises a tub A, having a midfeather B, a bed plate C, and a beater roll D. Back of the beater roll D, and between it and the back fall E, I mount a whipping and propelling device F.

A short distance back and preferably above the crest of the back fall E I mount my improved with the flow extractor which consists of a trough G lying across the tub, the discharge end thereof being lower than the opposite end, and extending through or over the upper part of the tub curb. In front of and screening the extractor is a fork-like separator H, which consists simply of a series of spaced pendent bars the free ends whereof are so placed that they intercept the water and stock which is thrown over the back fall and prevent any stock which has not been reduced to the desired iineness from entering the extractor, such stock being deflected downward and into the tub behind the back fall.

A machine for treating paper stock, disclosed in United States Patent No. 712,837, may be converted into a continuous machine by the addition thereto of an extractor and screen arranged and located in accordance with this invention, and the usual beating engine wherein the beater roll and bed plate are the only agents used to beat and grind the stock may be easily converted into a continuous beating engine b the addition thereto of an extracting troug and separating screen arranged and located in accordance with this invention. Such a converted machine is illustrated in Fig. 2 of the drawings.

I claim:

l. In a beating engine comprising a tub, a bed plate, a beater roll, and a back fall: an extractor trough located a short distance behind the crest of the back fall whereby stock thrown over said crest will be delivered outside of the tub, and a screening device interposed between said trough and said back fall whereby any insufliciently ned portions of the stock will be prevented from entering said trough and be deected back into the tub; and a whipping propelling device ahead of, and the periphery thereof in close proximity to 10 the face of said back fall.

2. In a beating machine of the character described, a tub, a bed plate, a beater roll journaled above the plate, an extractor trough arranged in spaced relation to said beater roll, a screening device suspended within the tub directly in advance of said trough, and a propelling device located between the beater roller and said screening device.

In testimony whereof I have lailxed my signature. i

WALTER WERNER.

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