US707014A - Paper-making machine. - Google Patents

Description

No. 707,014.. Patented Aug. l2, |902.

J. F. RICHARDS;

PAPER MAKING MACHINE.

(Application led Hay 29, 1902.) (NoModal.) 2 Shaets-Shaet I.

v1 WSW me/Moz 'F 'my No. 707,014. I Patented Aug. l2, |902.

J. F. RICHARDS. PAP-ER MAKING MAGHINE.4

(Application led May 29, 1902.)

(mi model.)

2 sheets-sheet 2.

. THEnoRms 4versus co.. mumumc.. wnsmNuYoN. n. c.

' NISTFED r'res l JAMES FRANKLIN RICHARDS, or. LUKE, MARYLAND.

parsa-MAKING MACHINE.

SPECIFICATION forming part of Letters Patent No; '7o7,o14,.datea August 12, 1902. Appumionieai/Iay 29,1902. senat No. 109,466. (No moans' To all whom it may concern.

chines; and I do declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilledin` the art to which it appertains to make and use the same.

This invention relates to improvements `in.

paper-making machines of the 'Fo urdrinier class, and particularly to the shaking-section'l thereof, whereby the saturated pulpl carried by the traveling wire cloth orapron is shaken laterally and agitated to cause the particles, or fibers of the pulp to intermingle,A whereby' a Web-like structure of the saturated stuifisr secured. I-Ieretofore the shaking-table fin this class of machines has been pivoted at or adjacent to one end to thecouchf-frame, either in front or in rear of the suction-boxes, and

has been operated upon at its opposite end by appropriate shaking mechanism, whereby the suction-boxes, which are suitably iixedj upon the shaking-table7 are all caused vto swing or vibrate in the samedirection and to different degrees,according to their respective distances from the pivot-point, theV boxes closest to said point thus having little or .nok

vibratory action relative to" the' traveling apron. p the reason that when the apron is'loaded and drawn down by the action fVV the suctionboxes the vibratory action of those boxes nearest to the pivot-point is not sufficient to prefv vent the apron from stickingto. saidV boxes, Y and whereby. the latter prevent the apron' from having thevibratory action it should at thispoint. As a consequence the strands of the wire apron are caused to cut into the perforated tops of the boxes and form grooves which are Aengaged by the diagonal stitches connecting the ends of the apron, said stitchesboxes" to a smooth surface.

Such constructions are defectiveforV comes necessary to break the vacuum by supplying `air to the suction-boxes, whereupon the apronis freed and becomes responsive to theguide-roll; but owing to the rapid lateral `returnI movement of the apron to its normal positionihe edges of the same frequently `bend or doubleup, sometimes rendering it `useless and' at least requiring the stoppage of the machine for the purpose of adjusting the apron and planing'off the mutilated suction- Hence great skill and care'fmust be exercised in order to keep themachine in running o1der,and much valuable time is lost from frequent stoppages and repairs. I

The object otmy invention is to provide simple and effective means for overcoming these objections and for regulating the vibral tory .playgof the suction-boxes in such manner as tosecure the` best results.

` VVith'the above and other objects in view, `which willreadily appear as the nature of the inve'ntionis betterunderstood, said invention consists incertain novel features of construction vand combination and arrangement of `partsvvhich Will be hereinafter fully described and claimed,y and illustrated in the accom panying drawings, in Which-= Figure lis a view in side elevation of a Fourdrinier paper-making machine embodying myinvention.' `Fig. 2 is a top plan view, on

'an enlarged scale, showing that portion of the machine-bearing the invention. Fig. 3 is a vertical section through the head of the supporting 'post, showing the pivot-bolts and coactingparts. Fig. this a vertical section taken atright vangles to Fig. 3.

`Referringnow more particularly t0 the drawings,`the numeral l represents the shaking-table of the machine, comprising the side bars 2 and table-rolls 3; et, the breast-roll; 6, the endless-Wire apron mounted `in the usual way; 7 and 8, the couch-rolls; 9, the guideroll; `10,` the wire-covered dandyrollff and l2 the suction-boxes, which are constructed and arranged; except as hereinafter specified, in the ordinary Way. n

In carrying my invention into practice I bolt or otherwise secure the suction-boxes in one 0r more transverse pairs or series to the pivotally mount the vibrating table to supporting-posts 13 in the following manner:y

The inner or front ends ofthe bars rests upon a seat 14, formed upon the couch-frame, and are provided at a desired distance in rear thereof with longitudinal slots 15, such distance being sufficient to leave a space for a desired number of transverse pairs or series of boxes between the posts and seat. Through each slot 15 passes the upper end of a bolt 16, which is threaded .to receive a top adjusting nut 17, holding the bar against upward displacement, and is formed with a threaded recess 18 for the reception of a stud-bolt 19, upon which is mounted the bracket 20, supporting the adjacent end of the dandyroll. The lower end of the bolt 16 is horizontally adjustable in a cross shaped slot 21, formed in the upper end or head of the post 13 and extends beneath a shoulder 22 to receive a nut 23, which bears against said shoulder and secures the bolt from upward movement. On the bolt is formed a head 24, which occupies the transverse portion of the slot and against which bear adjustingscrews 25 25', working in threaded openings in bearing-plates 26, located on opposite sides of the post-head. By this construction it will be seen that the shaking-table is mounted to vibrate laterally on the bolts 16 and that the latter are adjustable longitudinally of the machine and in the slots 15 to vary the pivot-point relative to the front or adjacent end of the table, which adjustmentis obtained through the medium of the screws 25 25.

As heretofore stated, it is customary to mount all the suction-boxes either on one side or the other, but generally in rear of the pivotal point of the table, thus causing those rolls nearest the pivots to have little or no swing or vibration, whereby the apron, as previously described, cuts into the suctionboxes and is forced toward one side of the machine by the diagonal stitches of the apron acting as threads in the grooves thus formed in the boxes. By mounting the boxes on opposite sides-of the pivots, so that one or more boxes stand in rear and one or more in front of the transverse plane of the pivots, this objection is entirely overcome, as the front boxes have a lateral swing or vibration equal to that of the rear boxes, and as this swing or vibration eectually prevents sticking of the apron to the boxes no cutting or grooving action can ensue, and hence there will be no surfaces for the threads at the end of the apron to work on and crowd said apron to one side of the machine. Furthermore, by adjusting the pivot-bolts by means of their adjustingscrews in the slots 15 the vibratorv action of the front set of suction-boxes-i. e., those nearest the couch-rolls-may be regulated to the utmost nicety. It will therefore be seen that the invention is productive of great advantages in rendering the machine less liable to injury and in saving the time and labor ordinarily expended for more or less frequent repairs.

The front ends of the bars or rails 2 are apertured to receive bolts 27, adapted to be passed through openings in the seat 14, so that the table may be lheld lixed against movement when desired.

From the foregoing description, taken in connection with the accompanying drawings, it is thought that the construction, mode of operation, and advantages of my improved paper-making machine will be readily apparent without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principleor sacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. InaFourdrinier paper-making machine, the combination with a traveling apron, of a shaking-section pivotally mounted at apoint adjacent to one of its ends, and suction-boxes mounted upon the shaking-section at the front and rear of the pivotal connection, sub stantially as described.

2. In a Fou'rdrinier paper-making machine, the combination with a traveling apron, of a shaking-section pivotally mounted at a point adjacent to one of its ends, suction-boxes mounted upon the shaking-section at the front and rear of the pivotal connection, and means for varying the position of the pivotal connection, substantially as specified.

3. InaFourdrinier paper-making machine, the combination with a traveling apron, and a shaking=section, of suction-boxes located at different points longitudinally of said shaking-section, and means for pivotally mounting the shaking-section at a point between the boxes,V substantially as set forth.

4. In a Fourdrinier paper-making machine, the combination with the couch-frame, and a traveling apron, of posts mounted upon said frame, a shaking-section, lneans for pivotally connecting the shaking-section to the posts, andsuction-boxes upon the shaking-section at the front and rear of the pivotal connection, substantially as and for the purpose set forth.

5. In a Fourdrinier paper-making machine, the combination with the couch-frame, and a traveling apron, of posts mounted upon said frame, pivot-bolts upon the posts, a shakingtable slotted to receive said bolts, suctionboxes upon the table at the front and rear of the pivotal point, and means for adjusting the bolts in said slots to vary the pivot-point, substantially as described.

6. In a Fourdrinier paper-making machine, the combination with a traveling apron, of a shaking-section pivotally mounted at a point IOO IIO

IZO

adjacent to one of its ends, suction-boxes mounted upon the shaking-section at the front and rear of the pivotal connection, and means for securing the shaking section against movement, substantially as described.

7. InaFourdrinier paper-making machine, the combination with a traveling apron, of a shaking-section pivotally mounted at a point adjacent to 011e of its ends, suction-boxes xo mounted upon the shaking-section at the front and rear of the pivotal connection,

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