US1764260A - Deckle for paper-making machines - Google Patents

Description

June 17, 1930.

J. W. HARRIS DECKLE FOR PAPFR` MAKING MACHINES Filed Aug. 4, 1925 3 Sheets-Sheet 1 June 17, 1930. J, w, HARRls 1,764,260

DEGKLE FOR PAPER MAKING MACHINES Fiied Aug. 4, 1925 3 Sheets-Sheet 2 lllll A A llll-lllllll Illmlllllll' June'l7, 1930. J. w. HARRIS DECKLE FOR PAPER'MAKING MACHINES Filed Aug. 4. 1925 3 sheets-shet s lill' 1 ||||I1 limi' Hummm Patented June` 17, 1930 UNITED STATES PATENT' ortica4 JAMES W. HARRIS, or neutroni), MAINE, AssIGNoR, EY MESNE ASSIGNMENTS', To PAPER- MAeHrNER-Y ooRPoEAToN, or DAYTON, oHIo, A CORPORATION? or omo DECKLEFOR PAPER-MAKING MACHINES Appncation mea August 4, 1925. serial' no. 48,024.

My invention relates' to deckles for papei` making machines and is applicable to paper nia-king machines of many different kinds.

T he object of my invention is to provide a stationary deelde for use in paper making machines generally and which has many advantages over previous deckles used in paper making machines. Previously, in paper malting machines the deolles generally in use were comprised of what is known as declle straps which were carried upon rolls so that there would be one deckle strap at each side of the saine supported upon and moving with the FourdrinierV wire screen, to prevent the r liquid carrying the paper stock from owing laterally oii" the wire. By providing stationary deckles,v in accordance with my invention, the life of the wire is increased, and the life of the rolls carrying the wire is also increased, as they do not support the weight of the declles. There is also greater ease in changing the width of the sheet on the machine, and less liability of water and dirt dropping from the upper part of the deckles onto the paper.

Furthermore, the declrles made in accordance with my invention not only enable a sheet of paper to be made, which is better formed and more nearlyr of the same thickness at the edges while increasing the production of the machine due to the longer life of the wire, but also eliminate the elaborate mechanical devices previously used forcarrying the deckle straps, and accordingly del n crease the'cost of repairs in the upkeep of the machine.

Furthermore, I have found that'I may accmnplish the above purposes without having` such long decliles as were previously used. Further advantages of my invention will appear from a detailed description of the same hereinafter. A

lVhile my invention is capableof embodiment in many different forms, by way of illustration l shall describe only one form of the saine in the accompanying drawings, in which- Figure l is a side elevation of a paper making machine shown diagrammatically and equipped with my improved form of deckles,

Figure 2 is a plan view of the same,

Figure 3 is a' transverse section taken on In the drawings I have 'shown a Fourv,

drinier paper makingi'nachine having astoclt supply box for receiving the stoclrcarried by a body of water, preferably in the proportion of about 8-38/100 pounds of paper stoel; to 200 gallons of Water, the same being' delivered into the stock` supply box through any suit-- able type of screens, in the usual manner. From this point the paper stoclr'liows out of the stock supply box onto an apron 2 to a dept-h of about 4 inches, the dept-hrbeing main tained by means of two side' aprons 3'` andtwo slices 4 and 5, in the usual manner. From this point the water carrying the paper stock flows under the slices 4 and 5 onto a Four drinier wire 6 of the usual l`i'nd,whicliis coms prised of a very fine wire mesh screen cloth of brass in the form of a belt passing over roll 7 having an adjusting mechanism 8, pro vided with an operatingl handle 9, for raising or lowering the roll 7. The other end of the wire passes over a suction or couch roll 10 of the usual type. The roll 7 and its adjusting mechanism 8 are carriedv by a support 11, which, together with two supports l2 near the other end of the machine, actas a sup'-A porting means for two longitudinal rails 13. and`14, forming therewith the main frame of the machine. The wire 6 in its forward movement passes over a set of table rolls 15" supported in any suitablebearings' carried by angle bars 16 supported in any" suitable manner from the rails 13 and v14. Y

The paper stock which passes under theV slices 4 and5 tobe received upon they wire' 6 formsa paper web owing to the elimination of the water' therefrom, the body of' stock being maintained in position at a uniform loo depth during the formation of the paper web by means of stationary decirles, comprised of sheets of fabric, such as rubber or any other desired material 17 and 18, located at the two sides to the machine immediately above the Wire 6. The supporting means for the rubber sheets 17 and 18 is comprised of outer clamping plates of copper 19 and 2O and inner angle members of copper 21 and 22 secured together byl bolts 23. The angle members 21 and 22' are secured by bolts 24 to four deelde frames 25, 26, 27 and 28, which are slidably mounted upon corresponding deckle frame supports 29, 30, 31 and 32, having geared serevs7 threaded shafts 33 passing therethrough to engage with the decirle frames 25, 26, 27 and 28. The

y said shafts 33 are adapted to be operated by CII handles 34 and 35 with the aid of longitudinal shafts 36 and 37, having appropriate bearing meshing With the gears 33. It will be noted that the supports 29, 30, 31 and 32 are carried upon suitable uprights 34', 35', 36 and 37 which, if desired. may be made of telescoping parts, as shown in Figure 1, in order to enable them to be adjusted vertically by means of nuts 37". The Water which passes through the Wire 6 at this point in the machine is received by appropriate trays 38, 39, 40, 41 and 42, from which the Water flows into laterally removable pans 43, 44, 45 and 46.

After leaving the table rolls 15, the Wire passes over any desired type of vacuum ber- es 47, 48 and a supporting roll 49 and between a supporting roll and a dandy roll 51. Thence it passes over tivo vacuum boxes and 53 and a guide roll 54 until the suction roll 10 is reached. Thereafter the wire 6 passes in the reverse direction adjacent to carrying and stretch rolls 55, 56, 57, 58 and 59 back to the `breast roll 7. Y

It will also be noted that the deckles are comparatively short in that they do not eX- tend more than approximately one third the length of the set of table rolls 15, Whereas previously the decirle straps have extended even beyond the end of the set of table rolls.

In the operation of my apparatus the paper stock carried by the body of Water flows into the stock supply box 1. and thence onto the apron 2, Where it is maintained at a depth of substantially four inches by means oft-hc side aprons 3. The paper stockl theu fiou's onto the Wire 6 and under the slices 4 and 5, which provide a body of the paper stock of uniform depth on the Wire. This uniformity' of depth is maintained even at the sides of the ivire 6, owing to the presence of the stationary deekles at `the two sides ofthe Wire, which effectively prevent the body ofpaper stock from flowing away at the edges of the Wire 6. These decirles may be adjusted laterally when desired by means of the handles 34 and 35, all of the four ends of the two decirles being simultaneously moved in a V uniform manner during the adjustment'. lise the decirles may be adjusted in a vertical direction by adjusting the nuts 37 and elevating the vertical supports 34, 35', 36 and 3T or lowering the same, as desired. The Water which flows away from the paper stock through the Wire 6 is collected in the pans 43, 44 and 45 and flows therefrom continually to a suitable return water pump. The Web of paper thus formed on the Wire 6 is thereafter conveyed over vacuum bones 4? and throueh the supporting roll 5() an d the dandy roll 51 and over vacuum boxes 52 and for the removal of the residual Water, after which the iinal traces of Water are removed by the suction roll 10, and the Web of paper conveyed therefrom to any suitable apparatus for further iinishing the paper in the desiredmanner. The Wire 6 then travels in the reverse direction back to the roll 7.

While I have described my invention above in detail, I Wish it to be understood that many changes'may be made therein Without departing from the spirit of the same.

I claim: Y

1. In a paper making machine a substantially stationary decirle, comp -ising a sheet of flexible material, means for holding the same, and a. laterally adjustable means to which the flexible material holding means is removably secured for supporting the holding means. v

2. In a paper making machine a substantially stationary decirle, comprising a sheet of iiexible material, clamping plates on opposide sides of the said sheet holding' the same, and a laterally adjustable means to which the clamping plates are removably secured for supporting the clamping plates.

3. In a paper making machine of the character described, having a traveling forming Wireand means for flowing a stream of stoel( upon said traveling Wire, a stationary decide forrrestraining lateral spread of the stock upon the Wire, comprising a laterally adjustable channel member extending longitudinally of said Wire, a longitudinally extending angle member having one leg removably secured to said channel member, 'a depending sheet of flexible material adapted to extend to a position to restrain lateral spread oi stock upon said Wire, and a eian'lping plate for removably securing said sheet between the other leg of said angle member and said clamping plate.

In testimony that I claim the foregoing, I have hereunto set my hand this 39th day of July, 1925.

JAMES IV. Hiiiiiff.

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