US1271426A - Beating-engine. - Google Patents

Description

B. BUEHLER.

BEATING ENGINE.

APPLICATION FILED JAN.22

Patented J 111 v ramzamlzc/z" UNITED sTATEs PATENT OFFICE.

BROWNELL IBUEHLER, 0F PHILADELPHIA, PENNSYLVANIA,

BEATING-ENGINE.

Specification of Letters Patent. 4

Patented July 2', 1918.

Application filed J'anuary22, 1918. I Serial No. 213,222.

withdrawing the stock as soon as it has been reduced to pulp whose'pieces are of the required' size.-

It is further desired to provide a machine of the type noted with a novel form of per-, forated structure and outlet chamber for withdrawing the pulp from the tank, the invention contemplating the perforation of the backfall and the. connection of the outlet pipe of the machine to the inclosed space immediately under said part.

These objects and other advantageous ends I attain as hereinafter set forth, reference being had to the accompanying drawings, in which Figure 1 is a longitudinal vertical section of a beating. engine including my invention,

Fig. 2 is a plan of the machine shown in Fig. 1, and

Fig. 3 is a perspective of the backfall.

In the above drawings, 1 represents the tank of a beating engine of the ordinary construction, having rotatably mounted between its central partition 2 and one of its sides, a beating roll 3 carried on a shaft 4 supported in suitable bearings 5 and 6. Fixed to the shaft 4' is a driving pulley 4 which, under operating conditions, is driven from any suitable source of power.

The roll or drum 3 has projecting from its surface blades or knives 7 designed to co-act with a fixed member 8 supported in the customary manner at the bottom of the tank by a frame 9 and a backfall 10 extends upwardly adjacent to but at an increasing distance from the surface of the roll, having its upper outer end carried to a heightslightly below the level of the center line of said roll, from whence it extends back and downwardlyat an angle of about 45 to the bottom of the tank.

As indicated, the outlet pipe 12 leading to any desired receptacle such as a stufi chest, is connected to the space defined by back fall 10, the downwardly extended cover portion 11 thereof and the bottom of the tank immediately under these parts, and there are perforations 13 formed through the backfall into the chamber 14. These openln gs are of the dimensions necessary to separate stock which has been reduced to pieces of pre-determined size and forms a pulp, from the larger pieces of stock.

Under operating conditions, rotation .of the beating roll 3 in the direction of the arrow a Fig. 1, causes a circulation of water and stock in the tank in the direction of the arrow 5,-the valve 15 in the pipe 12 being opened sufliciently to permit of a flow of pulp from the space 14 under the backfall at the desired rate to the stuff chest or other receptacle' Owing to the 'co-action of the blades on the roll with the fixed member 8, the stock is reduced to pulp and asthis is formed the greater portion of it is continu-' ously removed from the tank by passing through the perforations 13 in the backfall,

it being noted that the stoppage of said perforations by larger pieces of stock iseffectually prevented by the washing actionv of the liquid current passing at relatively high velocity over the concave face of. said backfall or equivalent structure.

By reason of the above described arrangement and operation of the parts, I am enabled to utilize what is ordinarily 'a waste space in the beating engine, to wit,that space under the backfall 10 and inclined" cover 11.

. It is to be understood that while for purposes of illustration I have shown my invention as applied to a machine technically known as a beating engine, it may without material alteration be employed in apparatus such as washing machines in which the roll is utilized for purposes of circulation or agitation of the stock either with or without the fixed member or bed plate 8.

I claim:'

1. The combination in a beating engine of a tank; a circulating roll; a backfall mounted in the tank adjacent said roll and having perforations therein of a size to permit passage of pulp; and means for withdrawing from'the tank the pulp passing through the perforations of said backfall.

2. The combination in a beating engine of a tank; a eating rol herein h i g lad a fixed member mounted in the tank to cooperate with the blades of said roll; a concave backfall extending upwardly adjacent the roll from a position near the fixed blades 5 and having perforations therein of a size to permit passage of pulp; an extension cooperating with the bottom of the tank and

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