US878946A - Roller-press for paper-making machines. - Google Patents

Description

- P. BSGARFAIL.

PATENTED FEB; 11, 1908,

' 2 SHEETS-SHEET 1.

No. 878,946. PATENTED FEB. 11, 1908.

A P. ESGARFAIL.

ROLLER PRESS FOR PAPERMAKING MACHINES.

APPLICATION FILED MAR. 22, I907.

' 2 SHEETS-SHEET 2.

To all whom it may concern:

UNITED STATES PATENT OFFICE.

ROLLER-PRESS FOR PAPER-MAKING- MACHINES.

Specification bf Letters Patent.

Patented Feb. 11, 1908.

Application filed March 22. 1907. Serial No. 363.874.

Be it known that I, PIERRE ESCARFAIL, a citizen of the Republic of France, residing at Pontcharra sur Brda, France, have invented certain new and useful Improvements in Drying Roller-Presses for Paper-Making Machines, of which the following is a full, clear, and exact specification.

In the machines used in the manufacture of paper, it is desirable to wash the couching and rinsing felts without stopping the manufacturing operation, and for that purpose,

either two cylinder washing machines or a single roller pressed upward against the lower press cylinder of each dry press, have generally been used, the motion being effected from the latter cylinder. But in practice F these arrangements have some inconvenience which may be avoided by the present invention, such invention comprising: a felt squeezing cylinder located under the lower cylinder of the dry press, receiving motion, and transmitting the same frictionally to the said lower press-cylinder, this latter is carried by levers which, being combined with a counter-weight device, allows of" the lower cylinder to follow the upward movements of the upper cylinder.

Referring to the accompanying drawings, Figure 1 shows a paper machine dry press, and Fig. 2 is a diagrammatic view of a paper machine showing all the parts of Fig. 1 and the whole of a couching press, dry press and endless belt.

a is the upper cylinder of a dry press carried in pivotal supports,and b is the lower cylinder, the supports of which are resting on levers combined with a counter weight device, so that this cylinder can follow the upward movements of the upper cylinder. 0 c is the driving and felt squeezing cylinder; the same is arranged in stationary supports beneath the cylinder 7). It receives motion from the power transmission and transfers it to the cylinder 1) by friction which carries it over to the cylinder a. The paper and the felt are moving in the direction of the arrows. The cylinder 0 receives the power by means of a wheel 0 and a pinion p secured to the shaft carrying a pulley g which receives the motion by abelt, or by any other suitable means. It is evident that the upper cylinder a which is carried by supports pivoted at f may also be combined with slide ways as is the case in some machines.

A suction tank (1 is advanced in the well known manner as near as possible to the contact point of the press cylinder so as to act upon the felt as near as possible to that contact point, and so increase essentially the effect of aspiration.

In Fig. 2 the different parts are lettered as follows: the endless felt h, its guiding rolls 2', the metal cloth 3' bringing the paper paste or wet stock, is the cylinders of the wet press, and Z the paper drying cylinder. The paste arrives in the direction of the arrow M, and the paper comes out in the direction of the arrow Having thus described my invention, what I claim is In a paper making machine the combination with press rolls between which wet stock is carried, of a driving roll in fixed bear,- ings below said press rolls adapted to transfer motion to the press rolls, of weights, rods and levers acting on the lower press roll to lift it against the upper roll and of a felt apron passing with the paper between the press rolls and freed of the paper between the ower press roll and driving roll substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

' PIERRE ESCARFAIL. Witnesses:

J. GAUTIER, T. W. MARTIN.

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