US693354A - Paper-making machine. - Google Patents

Description

Nn. 693,354. Patented Feb. ||,-l |902.

H. PARKER.

` PAPER MAKING MACHINE.

(Application led June 22, 1900.)

(No Model.)

lill .nu

iglllfl!! n `wm` ||1 will.

uw' 'MH l!l UNITED STATES PATENT OFFICE.

HOWARD PARKER, OF BELLOWS FALLS, VERMONT.

PAPER-MAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 693,354, dated February 1 l, 1902.

Application tiled J une Z2, 1900. Serial Ilo. 21,187. (No model.)

To all whom t Hwy-concern: Be it known that I, HOWARD PARKER, of Bellows Falls, in the county of Windham and State of Vermont, (having apost-oftice address at Bellows Falls, Vermont,) have in- Vented certain new and usefnllmprovements in Paper-Making Machines, of which the following is a full, clear, and exact description, whereby any one skilled in the art may make and use the same.

My invention relates to a machine adapted to pick up particles of finely-divided material which are held. in suspension in a liquid, such as the stuff ordinarily used in papermaking.

My device comprises, in the main, a tank adapted to hold the semiiiuid mass of material, a roll arranged to pick up the stuff and form it into a continuous web of semiplastic material partially free from moisture, and means for removing the web of material from the surface of the roll as soon as it has asslllned a form of proper consistency to be hand e The essential objects of my invention are to provide a rotary mechanism for a paper-making roll which during its revolution will pick up upon its periphery the particles of the stud, partially extract the moisture from said stuff, and deliver it in a continuous web of any desired thickness.

Referring to the drawings, Figure l is an end view of the device with partsfcut in section. Fig.y 2te a view, looking toward the left, of the parts shown in Fig. l, withparts broke away" to better show the construction.

In the accompanyingdrawings the lettera denotes atankbuilt fromany suitable material and adapted to hold the stuft which is to be picked up and formed into a continuous sheet or web by the paper-making roll c, vrevolubly mounted therein. This tank is preferably rectangular in shape and is provided with a breasting a of sufficient height to prevent too great an agitation of the'material in the compartment b in which the paper-making roll is located. The material is introduced to the tank after being ground or reduced by chemical action and after rising over the breasting a floods into the compartment b, Where it 'is picked up by the roll.

the escape of liquid about `the bearing.

ments c3. VAt either end of the roll a flange e,

concentrically arranged with relation to the center of the roll, cooperates with an annular fixed liange a2, formed on the inner sidesof the end members of the tank, the two flanges forming a main chamber f. Overlying the meeting edges of these flanges is a packing f', which forms a water-tight joint between them. At

`the lower end of this chamber f is a-comparatively llarge outlet g, connect-ed with a suitable pump G for exhausting the air from the several compartments of the roll and withdrawing any liquid. I At the upper end of the 4chamber f isarranged a second and smaller chamber h, having an outlet h', connected with a suitable blower H for creating an airpressure in the chamber h. The chamber 7L is provided with inclosing walls h2, which completely shut it o from the main cham-4 ber f, but is,.however, open on its side nearest ytheend of theroll, as shown at h3 in Fig.

`l. Itwill be observed from this construction, rthere being a constant air-pressure in the chamber h, that the compartments c as they come into registering position with the opening h3 will also be iilled with air under pressure, which can find its way out only through4 the perforationsc formed in the outer shell of the roll. At rone side of the roll and arranged in close proximity to it is a doctor 'L'. This is preferably hinged at its 'outer end, as at 2', to ears as on the tank and is arranged with its inner end substantially tangential to the roll. `It is preferably located with its operative inner edge just in advance ofacompartment when the latter is in its registering position withthe opening of the air-chamber h. Said edge rests by gravity upon the roll and is also drawn toward the same tosome extent by the suction of the air flowing into the roll beneath the IDO body of the doctor. The oftice of this doctor is to deflect the web of material which has been formed on the periphery of the roll.

The operation of the device will be readily understood. The roll being driven from any suitable source of power and having its several compartments under the action of the exhaust-pu mp connected with the outlet-pipe g, picks up during its revolution particles of the material in the tank. This picking up of the material will continue so long as the periphery of the roll is in contact with the semiluid mass. As soon as one of the compartments is carried beyond the level of the material in the tank, the suction action still continuing, any superfluous moisture in the material will be removed, and as the compartment revolves still farther and is brought into registering position with the air-chamber t a pressure will be created within the compartment which Will lift the material carried on the periphery at a proper time to allow the doctor t' to engage it and deflect it from the roll.

The thickness of the material, or rather the web of material, which is formed on the roll may be regulated and varied by an adjustment of the speed of the roll and the force of the suction action or by varying the depth to which the roll is immersed. The surface of the roll, as in all devices of this sort, is covered with a finely-divided screen, which may be applied in any Well-known manner. As shown in the drawings a chamber with inlet and outlet ports and pump connections is provided at each end of the device, and this is the preferred construction, though it is not necessary to have compartments at both ends for the purposes of the inventor. In fact, many of the details of construction might be changed without materially altering the main idea sought for, and I do not Wish to limit myself to the precise construction herein shown and described, as any paper-making roll having a series of isolated compartments extending from end to end of the roll and opening into an exhaust-chamber formed at the end thereof with means for creating an air-pressure in the several compartments at a predetermined time would come within the scope of my invention.

I claim as my improvement-'- l. In a paper-making machine, the combination with a tank for the pulp, and a rotary perforated roll mounted therein; of means for picking up, partially drying, and delivering the pulp in a web, and a doctor hinged at one end to a support and having its other end standing in operative relation to the roll.

2. In a paper-making machine, the combination with a tank for the pulp, and a rotary perforated roll mounted therein; of means for creating suction within the roll above and below the level of the pulp, means for interrupting this suction at a point above said level, and a doctor having its edge standing in operative relation to the roll just beyond the point in the direction of rotation where said interruption occurs.

8. In a paper-making machine, the combination with a tank for the pulp, and a rotary perforated roll mounted therein; of means for creating suction within the roll above and below the level of the pulp, means for creating air-pressure within the roll at a point above the level of the pulp, and a doctor having its edge standing in operative relation to the roll just beyond the point in the direction of rotation where said air-pressure occurs.

4c. In a paper-making machine, the combination with a tank for the pulp, and a rotary perforated roll mounted therein; of means for causing the pulp to adhere to the surface of the roll, means for producing air-pressure Within the roll at a point above the level of the pulp, and a doctor having its edge standing in operative relation to the roll just beyond the point in the direction of rotation where said air-pressure occurs.

5. In a paper-making machine, the combination with a tank for the pulp, and a rotary roll therein comprising a perforated shell and a series of radial webs forming compartments of means for creating suction Within certain of said compartments, means for interrupting this suction at a point above the level of the pulp, and a doctor standing in operative relation to the upper portion of the roll.

G. In a paper-making machine, the comblnation with a tank for the pulp, and a rotary roll therein comprising a perforated shell and a series of radial Webs forming compartments; of means for creating suction within certain of said compartments, means for producing air-pressure Within certain of the compartments above the level of the pulp, and a doctor resting upon the top of the roll.

7. In a paper-making machine, the combination with a tank for the pulp, and a rotary roll therein comprising a perforated shell and a series of radial Webs forming compartments; of means for causing the pulp to adhere to the surface of the roll, means for producing air-pressure within certain of the compartments at a point above the level of the pulp, and a doctor standing in operative relation to the top of the roll. A.

8. In a paper-making machine, the combination with a tank for the pulp, and a rotat-W reo ing roll therein having a perforated shell and a series of radial Webs forming compartments open at the end; of a main chamber registering with the end of the shell, packing surrounding the chamber and said end, means for producing suction in such chamber, a

IIO

smaller chamber passing through the main open at the end; of an exhaust-chamber registering with the end of the shell, means for producing an exhaust therein at points above and below the level of the pulp, a smaller open at the end; of a chamber registering With the end of the shell and permitting the outlet of Water at the bottom,a smaller chamber opening through the larger and communicating with the roll-compartmentsat a point v above the level of thepulp, and means for producing air-pressure in this smaller chamber. f

11. u In a paper-making machine, the combination with a tankl for the pulp, and a perforated rotating roll therein; of means for caus- `ing the pulp to adhere Vto the roll, means for producing air-pressure Within the roll at a point where the web of pulp is to be delivered therefrom, and means just beyond this point in the direction of rotation for positively deiieetin g said web from the surface of the roll. l

' HOWARD PARKER.

Witnesses z" WILLIAM H. BARKER,

LUITGARD MORBA.

Images