US844938A

US844938A - Paper-making machine.

Info

Publication number: US844938A
Application number: US34066306A
Authority: US
Inventors: William H Hoffman
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-10-26
Filing date: 1906-10-26
Publication date: 1907-02-19
Anticipated expiration: 1924-02-19

Description

No. 844,938. PATENTED FEB. 19, 1907. W. H. HOFFMAN.

PAPER MAKIN G MACHINE.

APPLIOATION TILED OCT. 26, 1906.

/ 1 ATTOHNE rs men t.

' sheet B by the jinalihag-cylinder C, which car- \VILLIAM H.

To IP/IUIII it lll llj/ far/ marm- Be it known that .i, .VHJLr/iiu ii. ilori- MAN, a citizen oi the United States, and a resident of inttlc Falls, in the cour y of llcrkhner and State oi. New kforli, have in l Vented new and useful iirnprovcincnts in Paper-Making Machines, of which the iollou= ing is a full, clear, and exact description. The invention relates to cylinder and Fourdrinier machines; and its object is to provide certain new and useful lflllplOYQ-l merits in paper-making machines whereby light-Weight stuck, such as is usecl for making 1 tissue and toilet paper, is prevented from sticking and breaking .Yililfi passing the press-rolls, thus producing a better on ality of Figure l is a side elevation of the in1prevepaper, vincreasing; the capacity of the nut-l Fig. 2 is an 1 urged sectional side elevation of the press ils, the aprons, and the paper sheet passin between the aprons and press-rolls; and. 3 is a plan View of the driving-gear for is lower press-roll, the making-cvlindcr, auu the couclvroll. 1

The pulp in the rat It is formed into a wet ries the sheet to the endless apron l), passing between the rushing-cylinder U and ti couch-roll ll, arranged on the top oi the ii! ing-eylimlcr (l in the usual manner. The 1 apron i), with the sheet u'l paper 3 thereon, passes from the couch-roll l) to and between 3 the upper and lower press-rolls l5 anal i and then passes to anal arouinl the couch-roll =1 running in contact with the iirst rlryiu ycy inder ii, As shown in Fig.1, the apron l.) is I in contact with a portion of the peripheral face of the drying-cylimlcr ll, and the retur or lower run of the apron D passes over a sorics of guidcrr llers i, hack to and. between the Imiking-cylimler C anti the iirst c0uchroll E. Guide-rollers l for the upper run of the apron'D are arranged between the couchrollE and. the press-rolls l and F. A second I endless apron J passes around the lower half l Specification of Letters Patent.

Application filed October: 26. 1906. Serial lilo. 340,663

I and a belt witli the couch-roll G, (see that,

--, NEW roan.

Patented Feb. 19, 1907.

of the upper press-roll B, so that the sheet of paper B is for the time being between the aprons D and J--that is, While passing be- F tween the p1css-rolls F and F, as will be readily understood by reference to Fig. 2, the

additionai apron J prevents the sheet of paper l3 troin sticking to the upper press-roll l iiiiv r s i i i tans preventing lnea ring, or other IIIJUIY to the sheet of paper. The apron J passes over a series of guide-rollers K- aud also through a Washing device L for kceping the apron ii :iean, '7

The lower press-roll F has its shaft F connected with suitable machinery for driving the press roll i and this shaft F is conncctc-d by a driving: device 6, such as pulleys,

anti belt with the inching-cylinder C and also by a driving (let ice P, such as ulleys, 1g. 3,)

to rotate the latter in unison with. the driven press-mil 2?, it being understood that the retation of the couch-roll G causes the first drying vlinclcr ii to rotate. Thelatter is made hollow and is heated by steam or other suitable means, so that the sheet of paper is partial dry before it passes from the first (lryii' wc tinder H onto the second dryingcylinclcr i T and so on through the rest of he paper-making machine. (he the top of the first iryii'ig' cyiinder H is arranged a. doctor h to rercnt the return movement of tl sheet of paper on the drying-cylinder H.

it is understood that when the machine is running and the feed-apron D carries the wet slmct beta en the pressrolls F F" then the wet Met in subjected to pressure to srgucczo out the Water, the auxiliary apron l prevcnlmg the sheet n'orn sticking to the upper prcsswoll. and hence the sheet is positirclj' carried along; by the licerhupron Y i e cmsclnroller G dryingcylincler the sh ct is partlv dried by contact ryingpcylinrler H, it does not stick to the sam and hence passes readily to the h c'\'lin le.r ii.

second I From the icrcgoing' it will be seen that the trek sheet oi "paper ii is not liable to stick and hri alr, and hence the machine is veryserviccahle for making very thin paper, such as tissue and toilet paper, the arrangement permitting a continuous running of the 138,- pcrsnairing machine, thus increasing the canicity of the. machine, at the same: time reiiucinc' the waste to a minimum and pro clucing a better quality '05 paper.

Having thus described invention, l

r t claim as new and'desire to secure by Leti paper between the press-rolls while interters Patent l i posed between the aprons, a (iryingeviinder,

1. A papenmaking' machine comprising a j a coiwh-roli for the, same and over which pair 01 press-rolls of which one is driven, p:isses ti1( apron carrying the sheet of paper aprons assing between the said press-rolls, to deliver t.he ;ietter to the dryiri -cvlim er, 20 one of t e aprons carrying the Wet sheet of i and means fo fidriving the couch-roll in unipaper between the press-rolis While interson with the driving press-roil; tliecouchposed between the aprons, a dryirig-cylinder, roii driving the drying-cylinder. I and acouch-roll for the same and over which i -in testimony whereof I have signed my 10 passes the apron carrying the sheet of paper 1 name to this specification in the presence of 25 to deliver the latter to the drying-cylinder. two subscribing, Witnesses.

2. A paper-making niachine'comprising a WILLIAM H. HOFFB'IAN.

pair of press-rolls of which one is driven, Witnesses: aprons assing between the said press-rolls, Rizsn F. LEWIS, 15 one of t e aprons carrying the wet sheet of WILLIAM. D. WATT.