US16927A - Pasteboakd - Google Patents

Description

`UNITED STATES PATENT OFFICE.

Louis xOoH, or New YORK, N. Y.

MACHINE FOR MAKING PASTEBOARD.

Specication of Letters Patent No. 16,927, dated March 31, 185'?.

` To all 'whom it may concern:

ing and pressing roller. Fig. II is an outthe required thickness` is Obtained, when the side view of the same and Fig. III is a front view.

In the present mode of manufacturing pasteboard, the paper web, formed on the common wire gauze cylinder inthe usual manner, is brought by and upon an endless felt between two rollers, the upper one O-f which `is called the forming roller, upon which said paper web is wound during as many revolutions of the said roller, until workman, following with a suitable instrument a groove running the whole length of the roller, cuts the so formed board in two,

and then grasping with his hands the corners of the board at the next revolution, tears' the same off from said roller, by which arrangement it not only requires great attention to Obtain the boards all the same thickness but atsame time va great diiiiculty is experienced in the manner of taking the boards off from the roller without tearing or breaking the same.

` My improvement consists rst in an arrangement by which `the board is cut through or to-rn asunder by the machine; when the'same has obtained any` desired thickness which can beeasily regulated and secondly combining `therewith an arrange` ment whereby the such cut board is taken ofi'l from the roller upon which the same has been formed.

The paper web is first prepared upon a common wire gauze cylinder in the usual manner and is then carried upon the felt F between the rollers A and B. `The roller A is called the forming roller and is covered with muslin or linen, the adhering property of which with the paper web causes the latter to wind itself around said forming roller A instead of following the felt which rulilis` T e circumference of this forming roller is made equal to the required length of one board. These rollers A and B run in boxes fitted into the side frames G of the machine. The boxes of the lower roller B` are acted upon by screws D by which said roller is firmly fixed in its place, and the boxes of the upper roller A are acted upon by the weights W so as to press this forming roller against the lower roller B. By the pressure thereby produced the moist surfaces of the paper,

web `will be made to adhere to each other as the same is secured upon the forming roller, and at the same time the water contained in the same will be partially pressed out.

E is a roller turning in suitable boxes ca-H` pable of sliding in grooves in the frame C and pressed by springs (a), acting against said boxes, against the face of the forming roller A. 'To the boxes of said roller E an arm Gr is attached, provided on its other end, with a movable screw or projection, O, which is consequently carried backward with this roller E, `.when said roller is forced away from the formingroller A in consequence of its gradually increasing diameter by the intermediate thickness of the board formed aroundsaid roller A.

In theforming roller A a movableslide P, which extends the whole length of said roller, is fitted sliding in a suitable box and acted upon bysmall springs f. On the outside of the forming roller A an arm H is attached tO this slide P, into which the lever R is' ttedbearing against a nose, n, on said arm H, and acted upon by a small spring to keep said lever R in its place, preventing thereby the'slide P from being pressed outward, by the action of its springs f. The other end of this lever R forms an inclined plane, having at the extremest point of its length and toward the line of motion of the projection or screw O, its higher point. From this point the inclination of the plane diminishes to all sides regularly, so that all other points from this end of the lever R; lie in a lower position. The position of the screw O of the arm G when the roller E is in direct contact with the forming roller A,

`is in the lowest point of the plane on the lever R during the time of their meeting, and it follows that when said roller E is forced away from the roller A by the increasing thickness of the board, thescrew O which is moved with and through this roller E will touch at each revolution of the roller A, the plane on `the end of the lever R but withoutjcommunicating sufficient motion to saidlever R, to. force the other end o-f the same away and clear of the nose n on the arm H, until the roller E hasbeen so far pressed away fro-m the forming roller A as to bring thereby the screw O on the end of the arm Gr opposite to that point on the plane on the end of the lever R where the motion thereby produced, is suflicient to force the lever B, clear of the nose (n) on the arm H, thereby setting said arm H as well as the slide P at liberty, when the action of the springs f will force said slide P outward. By changing the position of the screw O, the distance to which the roller E `shall be forced away from the forming roller vH and consequently with the slide P.

g, is a projection fast on the frames C of the machine.

The roller E which is pressed by the spring a' against the forming roller A, upon which the paper web is wound, as before described will be gradually forced away from said roller A as the board increases in thickness taking with it the arm G and Vscrew 0.-l/Vhen the paste board has obtained the required thickness which is regulated by the-position of the screw O, said screw O acts upon the lever R so as to force the levery R away and clear of the nose n on the arm H setting thereby the slide P at liberty which will then be forced outward by the springs f, by which action the paste board which has been formed on the roller A will be cut in two. To facilitate this cutting or tearing of the thick pasteboard a recess, o, forming a groove: running the whole length of the roller A vis made on the top edge of the slide P or immediately before the same in the body of the roller A by which consequently the pulpy substance is at that part under no pressure from the roller B, and contains more water than anywhere else. The cohesion of the fiber of the pulp is therefore weakest at this point, and by the springing out of the slide P the board is easily torn asunder at that point, whereas it adheres to the solid part of the slide P, so that the same is, by the springing out of the slide, loosened from the roller A the whole space between the slide P and the touching point of the roller E.

Instead of cutting the board after the same has obtained the required thickness by means of a movable slide in the manner above described, a hinge, vlet into the forming roller A the whole length Hush with the circumference of the same may be substituted and operated by levers in such a manner as to make said hinge fly open when the required thickness of the board is obtained.

S is a movable frame running the whole length of the forming roller A and turning in bearings in the frames C of the machine, provided with arm w connected with levers m, which latter are acted upon by projecting pins, r, fast on the ends of the forming roller A, by the actions of these pins, r, against one end of the levers m a downward motion is communicated to the movable frame S, by each revolution of the roller A. A small spring or weight brings this frame S back again into its original position. To this frame S a piece of leather vor india rubber w, is attached extending the whole length of the forming roller A and projecting toward the roller A so far, that it overlaps the slide P when the same is pressed out about one quarter of an inch. l

When the slide P has cut the board and partly loosened the same from the forming roller A as above described, the pins, 7", on the ends of the roller A act upon'the levers m and 'communicate thereby a downward motion to the frame S by which motion the india rubber strips the board off from the endl of the slide P when said board falls upon the roller p and felt T and is carried away upon this endless felt T.

By the springing out of the slide P the levers p and c which are connected with the arm H of the slide P have been moved with ythe same, by which motion the end of the leverflc has been thrown outward. By the further revolution of the roller A the projection g on the frames C comes into contact with the end of the lever 7c pushing the same back, and which later by its action upon the arm H forces thereby the slide P back again into the roller A when the lever R by the action of its spring is again forced against the nose n of the arm H holding thereby the slide P fast in the roller A. By the further revolution of the roller A the remaining board is loosened from said roller A, by its own weight and is taken olf successively by the roller p and endless felt T until the end of the board has left theA point of contact between the rollerE and the forming roller A.

When the board has passed from between the rollers A and E and said roller E is no more separated from the former by any intermediate thickness said roller E is then again forced into its old position together with its arm Gr and screw O, by the action of the springs when the above described operation will'be repeated.

so y

What I claim as my invention and desire to secure by Letters Patent sl. rIhe arrangement of the rollerE in connection With the arm Gr and projection or screw O for the purpose of operating the lever R by which the slide P is held fast or set at liberty When the board has obtained the required thickness, together With the arrangement of regulating by means of said screw O the required thickness of the pasteboard in the manner specified.

2. I claim the movable slide P or its equivalent constructed and operated as described, and for the purpose of cutting or tearing and lifting the pasteboard Which Was formed on the roller A from said roller after the same has obtained the required thickness. n

3. I claim the arrangement of the movable frame S With leather or its equivalent attached, for the purpose of stripping oft1 the cut paste board from the end of the slide P the Whole being operated in the manner as specified. s LOUIS KOCH. Witnesses:

HENRY E. ROEDER, J. AOKENHAUSEN.

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