US400110A - Joshua norton - Google Patents

Description

(No Model.)

- J. NORTON, Jr.

. BEATING ENGINE. No. 400.110.

Patented Mar. 26, I889 UNITED STATES PATENT OFFICE.

JOSHUA NORTON, JR, OF PORTNEUF, QUEBEC, CANADA.

BEATlNG-ENGINE.

SPECIFICATION forming part of Letters Patent No. 400,110, dated March 26, 1889.

Application filed June 25, 1888. Serial No. 278,080. (No model.) Patented in Canada April 4, 1888, No. 28,796.

To aZZ whom it may concern.-

Be it known that I, JOSHUA NORTON, J r., a resident of Portneuf, in the Province of Quebec, Canada, have invented certain new and useful Improvements in Beating-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, (said invention having been patented in Canada April 4:, 1888, No. 28,796.)

This invention involves few parts not found in other engines for the same purpose; but the combination and arrangement are believed to be novel and to secure distinctly different action and improved results.

It consists, principally, in an ordinary fiybar roll placed near the bottom of what may be called a vertical tub, since its greatest dimension is ordinarily its height, an ordinary bed-plate below said roll and a vertical mid-feather of adjustable height above said roll and parallel to its axis.

Figure 1 of the accompanying drawings shows the apparatus in perspective, one end of the tub being removed. Fig. 2 is a transverse section at 00 00, Fig. 1.

In the drawings, A is a tub having a preferably semi-cylindrical bottom, and a a are lugs or brackets for mounting it upon any suitable support.

B is a roll of cylindrical form bearing the fiy-bars Z), and mounted revolubly in preferably verticall y-ad j ustable bearin in the ends of the tub.

A bed-plate, C, consisting of the usual cluster of slightly-separated parallel knives, c, is fixed just below the roll B in a suitable recess in the bottom of the tub. Screws d serve to adj ust it vertically, and set-screws 6 hold it in position when adjusted.

Immediately above the axis of the roll is a mid-feather, D, fixed to the end walls of the tub, and alongside its upper part is a sliding extension, D, which may be raised or lowered by pinions M, engaging the racks N at each end of the extension. Ways 0 keep the extension in place. By a reversed curve the lower part of the mid-feather is carried to one side of the roll, where it terminates in close proximity to the path of the fiy-bars and nearly in the horizontal plane of the rolls axis. The curve is preferably such that the roll may be slightly raised without danger of the fiy-bars meeting the mid-feather. V

In operation the tub is filled with water, or so far filled that the mid-feather is submerged to some distance, the roll is set in motion, and material to be operated upon is introduced. The rotation of the roll induces a current, and the material is carried between the fly-bars and bed-plate repeatedly, the direction of motion being that shown by the arrows, and the material passing over the upper edge of the mid-feather during each circuit. From this apparently slight change in the disposition of parts in a beating-engine most im portant results followthe well-known tendency of beating-engines to leave the product in little rolls of aggregated .fibers entirely disappears, the circulation istmore rapid for the same speed of the same roller, the expenditure of power is less, and the product is of better quality.

In the ordinary machine the limit of speed of the roller is controlled by two considerations. The fiber is cut or torn off with squa: e ends if the speed be not in proper relation to the distance of the fly-bars from the bedplate and if this distance be too great high speed is of no use, since the pulp is not properly carried forward by the fly-bars, gravity alone not forcing it within reach of the fly-bars sufficiently fast, perhaps, for the reason that there is in this apparatus a tendency of the roll to produce a vacuum, thus adding to gravity atmospheric pressure, for the reason that the pulp moving vertically, because in all tubs provided with partially-submerged rolls air is carried with the fiy-bars. Be it for what reason it may, practical tests show the circulation in this 'machine to be not less than ten times as rapid as in the others. At the ordinary speed of the roller, and with the usual distance between the fiy-bars and bedplate, each cut will be made in the same time, but apparently upon a greater quantity of material, since it is more effective. In this case the pulp circulates with nearly the speed of the fly-bars themselves. Moreover, with this arrangement the speed of the roller may be increased if the distance from the bed-plate be also increased, and the feeding of the pulp to the fly-bars will be perfect and the tearing of the fiber unobjectionable. By varying the height of the mid-feather, the speed of the roller, its distance from the bedplate, and the amount of water, any desirable variation of or relation of quantity and quality of fiber produced may be had.

It is evident that changes may be made in the form of the various parts of my appara tus Without departing from the essential ele ments of my devices and arrangement, and I do not therefore propose to limit myself to the exact forms set forth.

hat I claim is 1. In a beatingengine, the combination, with a suitable tub, of a beating-roll mounted ing witnesses.

JOSHUA NORTON, JR. \Vitnesses:

FLAVIEN MoNDER, WILLIAM MAsoN.

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