US364687A - Pulp-beating engine - Google Patents

Description

(No Model.) Q B. B. TOBIE.

v PULP BEAI'ING ENGINE.

No. 364,687. PaQtentedJune 14, 18'87.

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I To all whom it may concern:

Be it known that I, BYRON B. TOBIE, of V UNITED STATES PATENT OFFICE,

BYRON l3. TOBIE, OF FRANKLIN FALLS, NE\V HAMPSHIRE.

PULP BEATlNG ENGINE.

SPECIFICATION forming part of Letters Patent No. 364,687, dated June 14, 188?.

Application filed August 30, 188d. Serial No. 212,205 (No model.)

Franklin Falls, county of Merrimac, and State of New Hampshire, havcinvented anlmprovement in Pulp-Beating Engines, of which the following description, in connection with the accompanying drawings, is aspeeification, like letters on the drawings representinglike parts.

Pulp-beating machines now commonly in use have elongated tanks, and the disintegrating or beating devices are located either at one side of the tank or near one end, to thereby establish a current in the material as it is being beaten.

In machines of the class referred to much time is required for all the material contained within the tank to be brought in contact with-the beating devices, and consequently the operation of beating is very slow; and such tanks are further objectionablabecause the material lodges at certain points and is not acted upon by the beating devices, thereby causing much trouble in the further processes of making paper, 820.

In my experiments to improve pulp-beating in any corner I have made the bottom of the tank over which the pulp travels concave.

My invention in pulp-beating machines consists, essentially, of an upright tank or re ceptacle of comparatively small area in crosssection, having a concaved bottom, combined with disintegrating or beating devices located .at the lower end of the tank and extended horizontally therein. Suitable devices are employed for adjusting the cutting or grinding bed and the cylinder with relation to one another.

Figure 1 in end elevation shows a pulpbeating engine embodying this invention; Fig.

2, a vertical section of Figa 1, taken on the dotted line as w; and Fig. 3, a vertical section of Fig. 2, taken on the dotted line y y.

A represents my improved upwardly-ex tended or high-column tank or receptacle, of &

20, made cit-her in flat sections, to form a quadrangular tank, or in curved sections, or a single piece, to form a tank having curved side walls.

The tank A in cross-section will in practice be preferably rectangular.

The devices instrumental in disintegrating or beating the pulp consist of a cutting or grinding cylinder, a, secured to a shaft, a, journaled in suitable boxes, I) b, and a co-opcrating cutting or grinding bed, a, seated in the bottom plate, 0, of the machine, the said grinding-cylinder and bed extending horizontally substantially across the lower portion of the said tank A.

The tank A is provided with a concaved wall or bottom plate, 0, to insure more uniform feeding of the material to the beating devices and to prevent lodging.

The cutting or grinding bed c is herein shown as adjustable vertically by means of a bar, (I, having an inclined top surface, upon which the bed 0 rests, the said bar d moving in slots 6 6' cut in the uprights supporting the tank A. A'piniomf, is mounted upon the shaft carrying the cutting or grinding cylinder a, said pinion being, positively rotated by a toothed gear, f, it in turn being rotated in any usual or suitable manner; but it is obvious that the cutting or grinding cylinder may be positively rotated by any other suitable means.

The pulp material, cut or chipped in any .usual manner, or it may be, if desired, crude material, is placed in the tank or receptacle A, together with a suitable supply of water,

and the beating devices operated, and as the with the disintegrating devices, so that the opcration of beating is greatlyincrcased, thereby increasing the capacity of work for each engine, and the material has no chance or place to lodge, and thereby escape, being acted upon by the beating devices. The tank is divided at a, so that the top portion may be taken off when it is desired to remove the cylinders a.

The outlet It enables the tank to be emptied, and the outlet h serves when washing up, but it is obvious that any other suit-able outlet may be employed for this purpose.

I am aware that a pulp-beating machine has been devised comprising a high pulp-holding vessel with the disintegrating devices on the bottom thereof; but said vessel consisted of an outer shell and an inner shell, the material being contained therein, and the disintegrating devices were arranged but part wayacross the bottom of the vessel, so that much ti me was consumed in disintegrating the material.

I claim- 1. In apulp-beating machine, an upwardlyextended tank, A, to contain a high column of pulp, said tank being composed of side walls, 20, but having no interior construction, combined with disintegrating or beating devices consisting of a cutting or grinding cylinder, a, and bed 0, located at the lower end of the tank A and extending horizontally for 0 substantially the entire length of the tank, substantially as and for the purpose described.

2. In a pulp-beating machine, an upwardlyextended tank, A, to contain a high column of pulp, said tank being composed of side 35 walls, 20, but having no interior construction, and having a concaved bottom, 0, combined with disintegrating or beating devices consist ing ofa cutting or grinding cylinder, a, and

bed 0, located at the lower end of the tank A 4c and extending horizontally for substantially the entire length of the tank, substantially as and for the purpose described.

In testimony whereof I have signed my name to this specification in the presence of two 5

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