US595753A

US595753A - Charles e

Info

Publication number: US595753A
Authority: US
Publication date: 1897-12-21
Anticipated expiration: 1914-12-21

Description

(No Model.) 0. E. BARRETT..-

SHAKE R'AIL FOR FOURDRINIER MACHINES.

No. 595,753. Patented Dec. 21, 1897. 211:112 F91 V 7 5111171; 0

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UNITED STATES Enrica PATENT CHARLES E. BARRETT, OF LAWRENCE, MASSACHUSETTS, ASSIGNOR TO THE J H. HORNE & SONS COMPANY, OF SAME PLACE.

SHAKE-RAIL FOR FOURDRINIER MACHINES.

SPECIFICATION forming part of Letters Patent No. 595,753, dated December 21 1897. Application filed November 27, 1896. Serial No. 613,638. (No model.)

To a whom it may concerm Be it known that 1, CHARLES E. BARRETT, of Lawrence, county of Essex, and State of Massachusetts, have invented an Improvement in Shake-Rails for Fourdrinier Paper Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

The present invention relates to a Fourdrinier paper-machine, and is embodied in a novel construction and arrangement of the supports for the shake-frame whereby a better action of said shake-frame is produced for the proper laying of the fiber along the wire.

As heretofore constructed the shake-frame has been mounted upon arms or supports pivotally connected therewith at their ends, the result being that the shake-rails and table-rolls connected therewith when vibrated or moved from side to side travel on the arc of a circle, the radius thereof being determined by the length of the supports for the shake-frame, so that an up-and-down or vertical movement is imparted to the pulp-support in addition to the rectilinear movement. This up-and-down movement is objectionable and results not only in an imperfect laying of the fiber, but also in a twisting and straining of the shake-rails, and the present invention is intended to obviate these difiiiculties by supporting the shake-frame in such a manner that the surface of the table-rolls, including that of the breast-roll, will be confined in its movement to a horizontal plane in the vibration of the shake-frame without any up-and-down movement whatever.

In carrying out the invention the shakeframe, in which the breast-roll is mounted, is supported at its movable end upon movable supporting members properly held in position and having cylindrical upper and lower surfaces, thus practically constituting rollers or rolling supports along which the shakeframe moves, so that in the lateral movement thereof there is no vertical movement whatever, the desired result thus being accomplished and the construction at the same time simplified, the pivotal joints, moreover, being dispensed with, so that wear is practically reduced to a minimum.

Figure l is a front elevation of the shakeframe, showing the supports therefor and the breast-roll. Fig. 2 is a side elevation of a sufficient portion of the machine to show the general arrangement of the shake-rails and shake-frame; and Fig; 3 is aperspective view, on an enlarged scale, of the supporting member, which forms the main feature of the invention.

The shake-frame a is provided at its ends with uprights a adapted to support the breast-roll b, the said uprights being preferably formed integral with the shake-frame. The shake-rails o are pivotall y secured in any suitable way at the top of the said uprights, as indicated at c in Fig. 2, to provide for the movement of the shake-frame with relation to the stationary parts of the machine beyond it, the said shake-rails extending back to the stationary support A, where they are pivoted at 0 The table-rolls c are mounted in bearings 0 connected to the shake-rails by hang ers 0 these parts, together with the wiregauze belt 0 (shown only in Fig. 2,) constituting whatv is known as the wire part of a Fourdrinier machine. To provide for the lateral vibratory movement of the said shake-frame a, it is mounted, in accordance with the present invention, upon the top of movable supporting members cl, which are interposed between the lower surface of said shake-frame at the ends thereof and the floor or support e, upon which the machine is set up. The said members d have cylindrical upper and lower surfaces 01 and (i the shakeframe at having fiat bearing portions a resting upon the upper surface 61 while the lower surface 01 rests upon the stationary support e, a shoe or supporting-plate e being shown as secured to the floor e to provide a proper bearing for the member 01. The member d, therefore, practically constitutes, so far as the lateral movement of the shake-frame a is concerned, a rolling support upon which the said frame moves back and forth, so that in the vibration thereof there is no lifting and lowering of the same as is the case when it is mounted at the end of swinging arms or pivoted supports, the movement of the wire part being in a horizontal plane.

As herein shown, the shake-frame a is held in position upon the supporting members (1 (there being one of said members at each end of the said frame) by means of cooperating engaging portions, the said frame at having shoulders or projections a between which extends a tongue 61 there being, preferably, two of said tongues, one at each side of the support d, cooperating with two corresponding sets of projections a at opposite sides of the upright a". In a similar manner the shoe 6 is provided with a projection e at each side thereof, extending upward between shoulders, shown as formed on lateral projections e from the supporting member at, the shoe 2 being preferably provided with a bearing-surface e risingsomewhat above the main surface thereof, with which bearingsurface the support at directly engages.

The shoes 6 may be secured to the door by any suitable or usual means, it being obvious that the projections d and (1 keep the parts in proper operative position after they are once assembled, there being, practically, no pivotal joints or bearings to be taken care of, while the vibration of the frame takes place in a straight instead of curved line of movement, with practically no frictional resistance, since it moves upon a rolling support.

The vibration of the frame may be pro vided for in any suitable way, the said frame being herein shown as provided with "a pitman f, secured to a lug or projection f at the side thereof.

To prevent the shake-frame from rolling off the supports if for any reason the pit'mati f is disconnected therefrom, the said supports are shown in Fig. 1 as provided with horns or projections d adapted to engage the under side of the shake-frame a in the rolling movement of the supports if said movement is continued beyond the normal.

It is found that the rectilinear movement obtained by this construction and arrangement of the supports for the shake-frame lays the fiber of the pulp to much better advantage, since the vertical movement, which is combined with the rectilinear movement in machines as heretofore constructed, tends to tip up the fibers and roughen the sheet, such tendency being obviated by getting rid of the vertical movement. Difiiculty is experienced also .in such machines, owing to the fact that the peculiar movement due to the manner of supporting the shake-frame results in a twisting of the shake-rails, tending to wear loose or break the pivotal connection thereof with the stationary portion of the machine. This difficulty is entirely obviated by the construction herein described, which produces a movement of the shakerails, confined to a horizontal plane perpendicularto the axis of the pivots, with no tendency to twist or strain.

The breast-roll is shown as secured to the shake-frame on the inner side thereof or the side toward the stationary part of the machine, the construction being such that the bearings for the breast-roll are detachably secured to the shake-frame, so that it is not necessary to remove the breast-roll bearings from the said roll in order to remove the roll from the machine. Since the breast-roll is on the inner side of the shake-frame, moreover, it is obvious that after it has been lowered it may be moved toward the stationary part of the machine to slacken the Wire-gauze belt, so that it is not necessary to disturb the tension-rolls, which are provided to keep the said belt tight.

The breast-roll is mounted in bearings I)? at each end thereof, the said bearings being of any suitable construction, and each bearing is provided with a tongue b3, extending upward into an opening" in an overhanging lug b secured, as by bolts 6 to the inner side of the shake -frame. After the said tongue is inserted in the opening in the lug b it is secured by means of apin b4", extending laterally through said lug, the said lug being also provided With a set-screw b to prevent any lateral play of the projection b in its socket.

The lug b is shown as provided with a setscrew b for the proper vertical adjustment thereof. WVhen, therefore, it is necessary to remove the breast-roll, the set-screw Z7 is loosened and the pin 12 taken out, and the said breast-roll may then be lowered and moved inward or toward the stationary end of the machine, so that it can be readily moved out endwise at the side of the machine.

1. In a Fourdrinier paper machine, the combination with the shake-frame and shakerails pivotally secured thereto at one end, and pivotally connected at their opposite ends to a stationary support, of stationary supporting plates or shoes for said frame, and

movable supporting members having cylindrical upper and lower surfaces, said members being interposed between said frame and said plates and provided with engaging portions cooperating with said frame and the stationary supporting-plate, substantially as CHARLES E. BARRETT.

Witnesses:

J OHN W. BOLTON, GEORGE E. BURNI-IAM.

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