US1712378A - Wire guide for paper machines - Google Patents

Description

y 7, 1929; F. CIBOROWSKI 2,378

WIRE GUIDE FOR PAPER MACHINES Filed Nov. 21, 1927 Patented May 7, 1929.

- UNITED-STATES PATENT OFFICE.

FRANK CIIBOROWBKI, 0] WORCESTER, MASSACHUSETTS.

WIRE GUIDE FOR PAPER MACHINES.

Application fllcd November 21, 1927. Serial No. 234,653.

This invention relates to a device for controlling the'trave'l of a felt belt or wire in the form of an endless apron over a air of rolls. It is particularly adaptable ibr use with Fourdrinier wires of paper machines.

The principal object of the invention isto provide automatic means for preventing the wire from running OK the roll on which it is mounted. The invention, however, is not confined'to its use withFourdrinier wires or similar wires of paper machines.

Wit

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 is a diagrammatic longitudinal sectional view of a part of a paper machine showing the way in which the press felt is guided therethrough;

Fig. 2is an end view of the machine, partly in section, showing one end-of the guide roll supporting the Fourdrinier wire with a preferred form of this inventionapplied thereto, and

Fig. 3 is an end view of the same, partly in section.

"These wires are quite wide and long and the are supported by rolls which, if made stationary, bearlngs in all 'cases, will be apt to result in the running of the wire off of one roll in case there is any slight inaccuracy in the setting up of the machines. This invention is designed to provide auto? matic means to take care of any travel of the wire along the roll.

In Fi .-1 the machine is shown as having a pair 0 squeeze rolls 10, through which the felt 11 passes. 'Supporting rolls 12 carry the felt and a guide roll-13 is shown located in the usual place. This roll is supported in a stationary hearing at one end and an open sided hook bearing 14 at the other end.

This latter bearing is supported by a vertical stud 15 having a head under which'is a springlfi for carryingthe stud. The tensionof the spring is adjusted by a. screw 9 2 carried by a cover 8.

The frame of .with a fixed arm 18'o n which is feeler 19. This feeler is ada te to come into contact with the edge of t e felt 11 and is' kept in contact with that edge by an operating wei 'ht20on a bell crank 21 which the machine is provided is connecte by, a link- 22 with the fwler 19.

'iTheweight constitutes a nonositive means for normally forcing the fee an '19 ivoted a' for holding the bearmganlp a right hand end of the feeler 19, as shown in Fig. 2, it will overcome the action of the weight and move the feeler as indicated in dotted lines. The result of this is to turn the bell crank 21 about its, pivot 23, thus raising the weight incidentally and also closing a pair of contacts 24.

This establishes an electric circuit which energizes an electromagnet 25 and pulls down a pivoted lever 26 that is connected with the top of. the rod or stud 15. The result is to lower this end of the roll 13 which, as the other end is in a stationary or pivoted hearing, will turn this roll on that hearing enough so that the felt will move back. Advantage is'taken of the principle that a wire or belt-running on a pair of rolls will always move toward the high side. This electro-magnetic means actually moves the roll at one end so that the other side tends to become the high side and the felt moves back. Of course, as soon as it moves back enough to break the contact at 24, that operation stops and the spring 16 raises the bearing 14! again. In this way the action. is kept up alternately moving the bearing 14 up and down and preventing the felt from crawling up the roll at either end. This can all be done by action at one end.

This is a comparatively sim le device for keeping the felt on the roll. t is operated from one end .of the roll and prevents the felt from moving far over to either side. The invention can be applied to any belting proposition in which a belt or other endless apron travels over a pad of rolls, such as a Fourdrinier wire.

Although I have illustrated and described only one form of the invention I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish tobe limited in these respects but what I do claim is 1. In a machine having an endless apron and a roll engaging it, the combination with a movable bearing for the roll, a vertical rod on which the bearing is supported, a spring to apply tension to the" apron, a magnet pted to move the bearing down to reduce the tension at that end, a finger positioned to engage the adjacent edge of theapron and means whereby, when thfinger is moved back toward thatend, the magnet will be connected up with asource of power.

2.,In a machine having an endless apron and a roll engaging it, thecombination with a movable bearing for the roll, a rod on which the bearing is supported, a spring for holding the bearing in a position to apply tension to the apron, a pivoted arm connected'with said rod, a magnet in position to swing the arm on its ivot to move the .end, and means whereby, when the apron is hearing down to reduce t e tension at that moved toward that end, the magnet will be connected up with a source of power.

3. In a machine having an endless apron and a roll engaging it, the combination with a movable bearing for the roll, a vertical rod on which the bearing is supported, a spring for holding the bearing up to apply tension to the apron, means for moving the bearing down to reduce the tension at that end, a finger positioned to engage the adjacent edge of the apron, and means whereby, when the finger is moved back toward that end, said means will be connected with a source of power.

' In testimony whereof afiixed my signature.

FRANK CIBOROWSKI.

I have hereunto

Images