US913008A

US913008A - Paste-applying mechanism.

Info

Publication number: US913008A
Application number: US36959807A
Authority: US
Inventors: Henry C Herr
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-04-22
Filing date: 1907-04-22
Publication date: 1909-02-23
Anticipated expiration: 1926-02-23

Description

H. C. HERR. PASTE APPLYING MEGHANIBM. APPLIUATIDN FILED un. as, 1001.

Patented Feb. 23, 1909. 2 SHEETS-SHEET 1.

WFA/Toa HENRY C. HERR WITNEJJEJ yum vu: annu Perlas 00,. wullmcron. a. c4

H. G. HERB. PASTE APPLYING MBGHANISM. Arrnxornox nur 23.22.1001.

' 913,008. l Patented Feb. 23, 1909.

2 SHEETS-SHEET 2.

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Pr-XTENT OFFICE.

HEN RY (D. HERR, OF DETROIT, MICHIGA PASTE-APPLYING ME CHANISM.

Application filed April 22, 19H7.

To all whom "it may concern:

Beit known that I, HENRY C. HERR, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements 1n Paste Applylng Mechanism, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to paste-applying mechanism., and has for its object the obtaining of a construction in which the hardening of the aste, so as to interfere with the operation ofp the mechanism, is prevented.

The invention consists, first, in the means for preventing the formation of a scum or film of hardened paste in the paste receptacle; second, the means for preventing the hardening of the paste on the paste-applying roll, and, further, in the peculiar construction, arrangement and combination of parts as hereinafter set forth.

In the drawings, Figure 1 is a sectional elevation of a portion of a machine provided with my improved pasting mechanism; Fig. 2 is an elevation of a portion of Fig. l; and Fig. 3 is a side elevation of Fig. 2. Figs. 4, 5, and 6 are respectively side and front elevations and a plan view of the bung, through which the circulating pipes pass; and Fig. 7 is a section. through the pump.

In the construction illustrated, and which will be described, the paste-applying mechanism is employed for coating the surface of a continuously fed paper strip used in the manufacture of multi-ply paper board. My improvements are, however, applicable to other uses. In the manufacture of multiply paper board, the adjacent faces of the paper are usually coated with a rapidly drying adhesive such, for instance, as a solution of silicate of soda. This substance, when exposed to the air, hardens in so short a time that difficulty is experienced in preventing the clogging of the a paratus, and particularly the formation o a hard scum over the to of the solution in the container therefor. I ave overcome this difficult by providing means for circulating the so ution and for constantly drawin off from the surface and feeding in from be ow.

A is a suitable frame work, B a bed or table thereon, over which a paper strip is fed, and C are rolls for holding the strip on the table.

D is the paste container and E is a pasteapplying roll, having a portion of its circum- Specication of Letters Patent.

Patented Feb. 23, 1909.

Serial No. 369,598.

ference immersed in the paste and another portion normally in contact with one face of the paper strip, which is preferably held thercagainst by rolls F F.

G is a barrel or other closed receptacle for containinf a quantity of paste, in addition to i that whidh is in the container I), and from l which the latter is supplied. H and I are respectively out-goin and return conduits from thc receptacle ir to the receptacle D. As shown, these conduits pass through a bung J, one of them extending by thc tube K to the bottom of the receptacle G and the other terminating at the top of said receptacle. The opposite ends of the conduits are connected to the tank D, and the conduit I extends upward therein to the )lane in which it is desired to maintain the level of the surface of the liquid.

L is a pump arranged to ropcl the liquids through the conduits H an I.

With the construction as thus far explained, whenever the pump Ii is in motion, the fluid is constantly delivered through the conduit II into the receptacle D, being withdrawn from the receptacle G, while this will create a artial vacuum in said receptacle, which wi l suck the overflow in the receptacle D throu 4h the conduit I and back into the receptac e G. Inasmuch as the conduit I extends near the surface of the fiuid in the receptacle D, there will be a constant movement from all portions of said surface towards the said conduit I, so that no portion of the fluid is permitted to remain exposed to the air for a sufficient length of time to harden.

The roll E is preferably driven by the friction of the paper strip when drawn thereover. It is, however, frequently necessary to throw the roll out of contact with the stri as where a new strip is to be engaged wit the machine, and I have therefore provided means for `raising and lowering the roll comprising a pair of rock arms M and a cam N for engaging one of said arms to raise and lower the same. When the roll is out of contact with the paper, the hardening of the solution upon its surface is prevented by the provision of an auxiliary mechanism for rotating the roll. This preferably consists of sharp toothed ears O and P respectively on the shafts of t e roll E and on the constantiT driven shaft Q. The arrangement is suc that whenever the rock arms M are lowered by the operation of the cam N, the

wheels O and P will so that the roll E is driven.

be thrown into mesh, l/Vhen the rock arms M are again raised, the engagement between the gears O and P is broken, so that the roll E may be driven solely by the paper strip and at the same time peripheral s eed.

When the apparatus is not in use, i any of the paste is permitted to remain in the receptacle D it would harden and interfere with the subsequent operation. I have, therefore, provided means for draining this receptacle, and to this end the outlet conduit I has a portion I which extends from the bottom of the receptacle to the level of the overiow. The receptacle D is also formed With an inclined bottom so as to drain its contents to the outlet ipe when the section I is removed. Thus, by removing this section, the paste is permitted to feed by gravity into the container G. Inasmuch, however, as the container G is a closed rece itacle, it is necessary to provide an escape ier the air therein, which is to be dis laced by the paste from the receptacle D. lier this purpose, I preferably provide a pet cock S, and preferabl arran e this on the bung.

Vllhat I c aim as my invention is:

1 In a pasting apparatus, the combination with an open top receptacle, of a closed container and fluid circulating connections between said receptacle and container whereby the surface portion of the fluid in said receptacle is constantly returned to the container and the supply to said receptacle is renewed from the container.

2. In a pasting a paratus, the combination with a receptac e containing the paste Huid, of a paste-applying roll immersed in said uid, means for rotating said roll hy the movement of the material to be coated with paste and auxiliary means for rotating said roll while out of contact with the material to be coated.

3. In a tion with a pasting apparatus, the combinaaste receptacle, of means for feeding a strlp to be asted thereabove, a paste-applying roll, and) means for vertically adjusting said roll into or out of contact with said strip whereby a normal operation of the roll is driven from the strip, and auxiliary means for drivin the roll upon the lowering of the same out 0I contact wlth said strip.

4. A pasting apparatus comprising a receptacle for the paste, and from which it is l applied to the work, a container for a supply aste, connections between said receptacle an container, and means for withdrawing the surface portion of the Huid to prevent the formation of a scum and to maintain a con stant level.

5. A pasting apparatus com rising a rece tacle for the paste, from wiich 1t is a p ied to the work, a container for a supply o paste, and means for forcing a circulation of the aste from said container to said receptac e, and means for withdrawing the surface portion of the fluid to prevent the formation of' a scum and to maintain a constant level.

6. A pastingl apparatus comprising a rece tacle for the paste, from W ich it is app ied to the work, a closed container for a supply of paste, means constantly operating whi e the apparatus is in use for circulating the paste from said container to and from said receptacle, and for withdrawin the surface portlon of the fiuid and means or draining the paste in said receptacle back into said container when the apparatus is not in use.

7. A pasting apparatus com rising a rece tacle for the paste, from w ich 1t 1s a p led to the Work, a container for a supply o paste, connections between said container an receptacle, a pump constantly operating while the apparatus is in use for propelling the paste from said container to said receptacle and an overflow through which the surplus paste is returned to said container by the combined action of gravity and suction.

8. A pasting apparatus complrising a recelptacle for the paste, from w ich 1t is app ied to the work, a closed container for a supply of paste arranged at a lower level, connections between said receptacle and container, including an overiow connection for normally maintaining a quantity of paste in said receptacle, means for draining said receptacle when not in use, and means for venting said container to permit of the displacement of the air therein during the drainage of the aste from the receptacle.

In testimony wlliereof I aiix my signature in presence of two witnesses.

HENRY C. HERR.

Witnesses:

NELLIE KINsELLA, JAMES P. BARRY.