US1841702A - Wire vibrator - Google Patents

Description

E. E. BERRY Jan. 19, 1932.

WIR

E VIBRATOR 2 Sheet-Sheet 1 Filed Jan. 2, 1931 A HM ya DE cqr7 c". Z5erzy.

Jan. 19, 1932. E' E. BERRY 1,841,702

- K WIRE VIBRATOR Filed Jan. 2, 1951 2 Sheets-Sheet 2 'Iatented Jan. 19, 1932 UNITED STATES PATENTOOFFICE EA.RL E. BERRY, OF BELOIT, WSCONSIN, ASSIGNOR TO IBELOIT IRON WORKS, OF BEI:OIT,

WISCONSIN, A CORPORATION OF WISCONSIN v derside of the WIRE VIEBRA'IOR Application filed-January 2, 1931. Serial No. 506,013.

This invention relates to a wire vibrator and more particularly to means for vibratirg the forming wire of a Fourdrinier paper machine.

The standard type of Fourdrinier table structure includes a plurality ofspaced table rolls over which theforming wire travels carrying the stock from which the web of paper is formed. The purpose of the table rolls is not only to support the forming wire in its travel but also by contacting the unfoi'ming wire to increase the tendency of the water to drain through the wire. Whil"this function is performed to some extent by the table rolls, the rapid revolutions of the rolls also has a tendency to throw water by centrifugal force back against the underside of the traveling wire, with the result that the efiiciency of the table rolls, so far as causing the removal of Water from the stock carried by the f0rming wire is concerned, is not very great. 5

It1s therefore an object of this invention to provide a wirevibrator forassisting in the draining of water through the forming 4 wire and also for assisting in the formation of the sheet on the wire.

It isa further impbrtant object of this invention to provide an attachment for the table section of a Fourdrinier paper machine by means of which the wire may be vibrated through impulses acting ina vertical plane and transmitted through -a Vibrating member to the underside of the forming wire.

Y Other and further important objects of this invention will be apparent from the disclosures in the specifieation and the accompanying drawings.

This invention (in a preferred form)- is illustrated in the drawings and hereinafter more fully described.

On the drawings: V

Figure 1 is a side elevational view, more or less diagrammatic, of the breast roll end of a table structure, showing a wiring diagram and the connections of a wire vibrator embodying the principles of my invention.

Figure 2 is a broken transverse sectional view taken substantially on line .IIII of Figure 1.

Figure 3 is an enlarged fragmentary view of an electrical vibrator showing its method of attachment.

Figure 4 is a sectional view taken substantially on line IVIV of Figure 3.

F 1gure 5 is a fragmentary view of the breast roll end of a modified form of table structure with vibrating mechanism of my invntion.

As shown on the drawings:

The reference numeral 1 indicates a breast roll suitably supported by means of spring members 2 and 3 in a well known mariner. A tahle structure 4, associated with said breast roll l, comprises the usual table rails 5 and 6 and table "rolls 7 supported therefrom in bearings 8. Said table rails 5 and 6 are suitably mounted upon spring members 9 to permit the table structure to" be shaken, all in accordance with standard practice.

My invention comprises a vibrating device, indicated generally by the reference numeral 10, and comprising a board 11 extending transversely of the forming wire 12 and seboards 11 is positioned between adjacent table rolls 7 at the breast roll end of the machine,

' as indicated in Figure 1.

To each. of the transverse boards 11 is attached one or more electrical vibrators 15 of standard or other suitable construction. As best indicated in Figures 3 and 4, the electrical vibrator comprises a casing 16 secured by means of an angle piece 17 and screws 18 to the underside of a board 11. Inside of the casing 16 is mounted a soft iron member 37 providing a core 38 around which is positioned a coil 19. Insulated from the member 37 but secured thereto, as by means of a block 20 and screw 21 is a metallic spring member 22. Said member 22 is secured at one end by the head of the screw- 21 against The coil 19 is connected by means of wires 26 to an alternating current generator 27, which in turn is driven from a variable speed directcurrent motor 28. In the leads 29 to said motor 28 is connected a rheostat 30, by

, means of which the speed of the motor 28 v tion, and I, therefore,

may be varied and consequently the frequency or cycle ofthe alternating current generator 27 likewise varied.

K It will be obvious that as the cycle of the alternating current generator 27 is varied, the frequency of the vibratory impulse imparted by the hammer 24 to the board 11 is likewise varied.

Preferably, a plurality of vibrating mechanisms are secured at spaced intervals along the vibratir1g board 11. The result is that very rapid vibratory'impulses are imparted to the board 11 and transmitted through the board to the forming wire 12. The actual amplitude of the vibration that may be imparted to the board 11 is very small, of the magnitudeiof only thousandths of an inch, but is nevertheless appreciable and results in a vibration that is quite visible both to the eye and to the touch.

It is evident that these rapid vibrations acting through a vertical plane upon being imparted to the f0rming wire 12 aid in the draining of the water from the stock carried by the'forming wire and also aid in the matting of the fibers deposited upon the forming wire from thestock.

In Figure 5 there 1s shown an arrangement of vibrating mechanisms 31 similar in construction to those already described but arranged in suficiently closely adj acent relation to support the forming wire 12 without the use of table rolls. It will be apparent that all of the table rolls may thus be replaced by the vibrating board 31 or only a part of the table rolls so replaced. The rapid vibration of the board tends to prevent the wear that would otherwise ocbur were the boards not subject to vibration. v

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invendo not purpose limiting the patent g1anted hereon otherwise than necessitated by the prior art.

I claim as my invention:

1. In a paper machine, the combination with a forming wire of a member contacting the underside thereof and means for imparting a definite continuous vibration to said member.

2. In a paper machine, the combination with a forming wire and table rolls theref of a member contacting the underside thereof between successive table rolls and means for imparting a definite continuous vibration to said member.

3. In a paper -machine, the combination with a forming wire of a member contac ting the underside thereof and electrically operated means for imparting a definite continuous vibration to said member.

4. In a paper machine, the combination with a forming wire and table rollsthereof of a member contacting the underside thereof between suocessive table rolls and electrically operated means for imparting a definite continuous vibration to said member. 5. In a F ordrinier paper machine including the f0rming wire and table rolls thereof, a member mounted transversely of the wire and contacting a narrow arca of the underside thereof and means imparting a continu-' ous series of shocks to said member.

6. In a Fourdrinier paper machine including the forming wire and table rolls thereoi', a member rigidly mounted at its ends to extend transversely of the wire and contacting a narrow arca of the underside thereof and electrical vibrators attached to said. member for imparting a continuous series of shocks to said member.

7. In a Fourdrinier table structure including table rails, table rolls and forming wire, a plurality of members contacting the underside of the forming wire at spaced intervals between successive table rolls and means for imparting vibratory impulses to said memers.

8. In a Fourdrinier table structure including table rails, table rolls and forming wire,

a plurality of members contacting the un derside of the forming wire at spaced inter vals between successive table rolls and electrical vibrators attached to said membersfor -)mparting vibratory impulses to said memers.

9. In a Fourdrinier table structure including table rails, table rolls and forming wire, a plurality of boards secured at their ends to said table rails and contacting the underside of the forming wire at spaced intervals between successive table rolls and electrical vibrators attached to said members for imparting vibratory 1mpulses to said members.

forming Wire, a plurality of boards posik combination with the scribed my r W1sconsm.

tioned between successive tabledrolls at the breast roll end, said boards being secured at their respective ends to said table rails and electric vibrators attached to said boards for imparting vibratory impulses thereto.

13, In a Fourdrinier table structure including breast roll, table rails, table rolls and forming wire, a plurality of boards p0- sitioned between successive table rolls at the breast roll end, said boards being secured at'their respective ends to said table rails, electric vibrators attached to said boards for imparting vibratory impulses thereto and means for varying the frequency of the vibratory impulses.

14. In a paper machine, the combination with the formi1ig wire of means for imparting vertically acting vibratory impulses to said wire.

15. In a Fourdrinier table structure, the

forming wire of members contacting the underside of the wire,for supporting said wire and means for imparters.

16. In a Fourdrinier table structure, the combination with the forming wire of members contacting the underside of the wire for supporting said Wire and electrical Vibratorsv secured to said members for imparting thereto vertically acting vibratory impulses.

In testimony whereof I have hereunto subname at Beloit, Rock County,

EARL E. BERRY.

ing rapid vibratory impulses to saidmem- 25 b

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