US1438050A - Paper-making machine - Google Patents

Description

s. s. MILLER. PAPER MAKING MACHINE. APILICATION FILED JULY 27. 192|.

1,438,050, vPatented Dee. 5,1922.

j Y @d "I'I ummm I '17 IIIIIII I- l kIII! IIIIIIII I nuewtoz Innung Patented Dec. 5, 1922.

STANLEY S. MILLER, OF GLENS FALLS, ,NEW YORK.

PAPER-MAKING MACHINE.

Application led July 27', 1921. Serial No. 487,965.

`practice in using machines of this type to run-the wire aprons upon which the web of paper is formed at increasingly high speeds, it now being not uncommon for the apron to attain a speed from six hundred to a thousand feet per minute. When these machines are run at such'high-speeds much difiiculty and inconvenience has been experienced where thedeckle straps leave the surface of the wire apron and pass around vthe supporting pulleys, by reason of the fact that the centrifugal force developed by the deckle bands as they make the turn about said pulleys causes more or less water and wet paper stock which adheres to the deckle strapsto be thrown off and toward the rear of the machine, lto the inconvenience of workmen and oftento the serious injury of the web of paper being formed, necessitating the section of the web thus spattered with the water and paper stock being removed and discarded, with incident loss in production and delays in the operation of the machine.

My invention has for its object to arrest, collect and take care ofthe material thus thrown off from the deckle straps by centrifugal force.

In the accompanying drawings, i

Figure 1 is a side view of a portion of a paper-making machine embodying my invention; and

Figure 2 is a top plan view of a portion of such machine.

In the drawings, 2 designates the framework vof the machine; 3 the endless wire apron upon which the web of paper is formed, and 5 the rollers that support the apron in the usual manner.v I do not show means for imparting motion to the wire apron nor for feeding the paper stock thereto, or taking away the web of paper after it has been formed, as these may be of any usual or preferred construction and arrangement, and they form no part of my present invention.

4f. designates ak deckle strap,lof usual or preferred construction, the machine being provided with two of these. -6 is the pulley about which the deckle strap makes its turn toward the delivery end of the machine. This pulley is supported upon a shaft 7.

A bracket 8, supported by some part ofl the framework 2 in proximity to, and preferably a little to the rear of, the pulley 6, carries an inwardly extending arm'to which is secured a guard and collector 10 locatedV directly to the rear of the deckle strap and with its lower end near to the upper surface of the lwire apron 3. Thegguard and collector is widerfthanthe deckle strap and is in shape a sort of curved trough-like receptacle set upright, having an inner side wall 11 and a-wall 12 at right angles thereto, curved to constitute the vbottom of the lower partof the collector guard and the.

rear wallof the upper part thereof. The lower portion of the guard and collector 10 curves forwardly toward the deckle strap, its lower yforward end being approximately parallel with the upper surface of the wire apron and aboutthree-quarters of an inch above the surface thereof. The guard and y .collector is thusy open toward the deckle strap and on one, the outer, sideu linto it is discharged, and by it collected, the material thrown by centrifugal force from the deckle strap, as has been described. ln the,

converging space between the lower, end of the guard 10, the upper surface of the wire apron, and the surface' of the deckle strap as it is. directed by the pulley awayffrom the wire apron, l arrange a small roller 13, mounted upon a shaft 14 supported in bearings carried by the guard 10. The shaft 14 is driven, by belt 15, from the shaft its direction ofrotation being indicated. bythe arrow. The roller 13 ispreferably wider than the deckle strap but not so wide as the forward open lower end of the guard 10, in practice being about two inches in diameter and four inches long. It is preferably located so that its periphery is about a quan ter of `an inch, at the nearest point, from the surface of the deckle strap and a like distance from the upper surface ofthe wire apron 3. It is rotated so that its peripheral speed is much less thanthat of the deckle L strap, 100 feet per minute being about the right speed for it. Its function is to arrest material thrown off from the lower portion of the deckle strap and collect the same upon its peripheral surface from which it is removed by a scraper l? and delivered into the lower pan-like portion of the guard or collector l0. Such material as is not arrested by the roller 13 is Cfathered by the doctor i6 and delivered into the collector or guard. lThe rear, bottom, wall l2 ot the guard is extended utlieiently tar to one side to deliver the material collected beyond the edge of' the web of paper that has been formed upon the wire apron so that it will not come in contact with or injure the web. rlhe material thrown ott bythe deelde strap be Sutliciently fluid in character to flow 1 from the guard, otherwise it is washed off by a flowing stream oi water supplied for that purpose.

The device described has proven to be successful ior the purpose for which it is intended, and eitlects a large saving in the product or the machine and enables the machine to be run practically continuously. lt

may be quickly and easily applied to a` machine already installed, and is inex- .opensive.

Wvhat l claim is l. ln -a high speed Fourdrinier papermaldng machine, the combination with the wire apron and deelde straps thereof, ot

' means for arresting and collecting the paper stoclr and water thrown by centrifugal torce from the deelde straps where they leave the surface of the apron on which the web of paper is formed, means for conducting the paper stoel; and water so collected so it will not be deposited on the paper being formed.

3. The combination stated in claim 2 when the collector is in the form of a trough open toward the deelde strap as it leaves the surface of the apron, the trough p i ,lesben having a side wall and a rear and bottom wall.

4. The combination stated in claim 3 having the bottom wall of the collecting trough extended laterally outwardly to deliver the material collected beyond the edge of the web of paper being formed.

5. The combination with the wire apron` and the deelde straps of a Fourdrinier paper-making machine, of a guard and collector located in rear of each deelde strap to receive and collect the material thrown by centrifugal force from such strap as it leaves the surface et the apron, and a small roller located between the lower portion oi' the said guard and collector, the apron and the deelde strap, and means for turning the roller at a speed less than that out the deelde strap, the roller serving to intercept some of the material thrown oil" Jfrom the deelde strap and deliver it to the guard and collector.

6. The combination stated in claim 5 including a scraper for removing the material adhering to the surface of theroller and delivering it to the collector guard.

7. ln combination with the wire apron and deelde straps ot' a Fourdrinier papermaking machine, a collector located close to and in rear of each deelde strap, the collecter being in the form of a trough open toward the deelde strap as it leaves the surface of the apron, and a doctor bearing upon the deelde strap above the lower portion of the collector arranged to remove and intercept material carried upwardly by the deelde strap and deliver such removed material to the collector.

8. ln combination with the wire apron and, deelde straps of a Fourdrinier papermaking machine, a collector for receiving the material thrown ott from the deelde strap as it leaves the surface of the apron and delivering it away from the paper being produced, and adjustable supporting.

means for the collector uniting it with the frame of the machine and permitting it to be adjusted with reference to the deelde strap and the edge of the a ron.

STANLEY MILLER.

Images