US1391281A - Coating device - Google Patents

Description

G. C. SNYDER.

COATING DEVICE.

APPLICATION FILED JULY 3, 1919.

1,391,281 PatentedSept. 20, 1921.

co INVENTOR M fv7-z. MQHJ flq ATTORNEYS UNITED STATES GEORGE o. SNYDER, OF NEW Yonx, 1v. Y.

COATING DEVICE.

1,391,281.. Original application-filed January 17,

To all whom it may concern: L

Be it known that I, GEORGE C. SNYDER, a citizen of the United States, residing at 123 West 44th street, New York, in the county of New York and State of'New York,

have invented certain new and useful Improvements in a Coating Device; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention'relates to coating devices particularly adapted for applying a film of li uid to sheets of material.

' t is an object of the invention to produce a device of this character in which a sheet may be coatedby the simple 0 eratlon of being drawn over the device. he use of rollers, brushes or -similar parts which are usually employed in coating machines is thus avoided. The mechanism is of simple construction, contains few moving parts, may be easily adjusted to apply films of different thickness, to sheets of material-'and possesses other advantages which will appear more clearly from a description" of a preferred embodiment. For this purpose the invention has been shown as employed for applying adhesive to a sheet of material preparatory to winding the same upona mandrel to produce angular hollow ware 1n accordance with my application Sei'ial No.

271,592 filed January 17 1919, of which this application is a divisionvIt will be understood, however, that the. invention is not limited to the particular application shown, but is of general utility and may be employed for applying liquids other than ad: hesive to sheets of material which are not to be subjected to a winding operation. In

I the-accompanying drawing.:

Figure 1 is a perspective view of the apparatus having the invention applied thereto;

Fig. 2 is a view partly in longitudinal sec-f slack of the material at the bottom of the tion of the coating device; and

Fig. 3 is a transverse section of the device along the line 3-3 of Fig; 2.

p In the drawing, 1 represents 'a framework;

or bed upon which is a fixed bearing-2 carrying a shaft 3, the free end of which is supported by a bearing 4 hinged to the framework as at 5; It will be:understood that any other suitable-type of movable Specification of Letters Patent. v Patented Sept. 20, 1921.

end of the shaft. The other endof the shaft is provided with one member of a clutch 6, th other cooperating clutch member being mounted upon the end of a shaft I I 7 provided with a pulley 8 adapted to be driven from any convenient source of power. The clutch 6 is controlledby an arm 9 connected by means of a rod 10 to a handle (not shown) which may be'placed 1n posltion to be conveniently manipulated by the operator of the machine.

Upop the shaft 3 is mounted a mandrel 11 provided withslightly convex faces. The

body portion of the mandrel may be of solid I material, or hollow for the sake of economy, and one corner of the body is in the form of a Wedge 12 which is attached to the body by a dovetail connection, so that the wedge may be driven out after a form has been wound upon the mandrel, to permit the form to be conveniently removed. As explained in the application referred to above, the curvature imparted to the faces of the mandrel should be sufficient to cause a bind- 1ng action between the convolutions of material as they are wound upon the mandrel,

but should not be so great as to prevent the article from assuming a substantial flatsided contour when straight edged heads are applied to the ends of the form.

The material 13 out of which the articles are formed is preferably supplied in rolls which may be mounted upon a shaft 14 parallel to the shaft 3 and provided at one end with a pulley 15 connected by a crossed belt 16 with a pulley 17 on the shaft 3, so that the shaft 14 is rotated in a direction tounwind material from the supply roll, while the shaft 3 is rotated simultaneously in a direction to .wind the material upon the trough to allow for the variable speed at v'which the material is wound on the mandrel due to the angular shape of the latter. The material is" then carried upwardly over, a

shelf 19 against which it is pressed by spring fingers 20. To provide for adjusting the tension of the material as it is wound upon the mandrehthe spring fingers are mounted upon a pivoted support 21prov1ded with in my application referred to above.

a depending wedge shaped portion 22 en.- gaged bg a cam 23 on a shaft 24 mounted in suita le bearin s attached to the shelf 19 and which may e manipulated by a gear and worm arrangement such as is shofvn stead of the mechanism described, any suita- .ble arrangement for producing tension of the material may be used. After passing over the shelf 19 and under the. spring fingers 20 the material passes under a roller .25, then over the coating device of the insurface of the material comprlses a horizontal pipe 27 screwed into an elbow 28 at one end and at the other end mounted in a su1table support 29. The' elbow 28 is connected to a pipe 30 which in turn is connected to a valve 31, located below the level of pipe 27. Adhesive is supplied from the tank 32 through a pipe 33 leading to the valve 31.

f necessary a burner 34 may be provided to keep the adhesive in liquid condition, or

cold adhesive such as silicate of soda, may be used as a binder. The valve 31 may be manipulated. by a rod 35 connected to a. handle 36 mounted in convenient position on the framework of the apparatus. The pipe' 27 is provided with 'a longitudinal channel .37 communicating with 'the interior of the pipethrough ducts 38. Extending from the top of the channel 37 in the direction in which the material travels as it is drawn over the pipe are passages 39 through which adhesive may flow from the channel onto the surface of the material. The passages 39 should preferably register with the ducts 38 asshown most clearly in Fig. 2, and have their bottoms tangential to the pipe as shown in .Fig. 3. It will be understood that any number of ducts and passages may be employed and that they will be of sultable dimensions to permit the re uired flow of adhesive.

11 forming angular hollow ware by means of the apparatusdescribed above, a roll of suitable material is placed on the shaft 14 and unwound enough to leave some slack at the bottom of the trough. The

material is then drawn over the shelf 19 under the fingers 20 which should be adjusted to exert little or .no pressure at this time. The material is then carried under roller 25, over the adhesive supply pipe 27 and around roller 26 to the mandrel 11. As the strip of material is drawn over supply pipe 27 adhesive should be permitted to flow in order that the outer face of the first convolution of material shall be coated so that the second convolution will be united to it.

In passing over roller 26 the material is turned so that the surface which has been coated with adhesive comes uppermost, in proper position to be wound pon the manthat at this time the bracket 4 is in posi-' tion to support the free end of shaft 3. When the Winding operation begins,the spring fingers 20 should be adjusted to produce the required degree of tension asthe materials wound upon the mandrel. On ac-. count of the convexity of the faces of the mandrel successive convolutions of the material are firmly united to the proceeding convolutions, and owing to the greater distance' of the corners o the mandrel from the shaft, there will be an increased binding effect between the layers of material at these points and they will be united into a compact mass to give strong rigid corners to the finished article.

During the winding operation adhesiveis supplied'to the material from the pipe 27 through the'ducts and passages 38 and 39, and the amount of adhesive applied to the material may be adjusted to the desired quantity by a slight rotation of the tube 27 about its axis. The screw connection between the pipe and the elbow 28 will permit of this adjustment, but it will be understood that any other arrangement may be employed for permitting a slight rotation of the tube with respect to the piping system through which adhesive is supplied. If, instead of occupying the relation with respect to the sheet of materialshown in Fig. 3, the tube 27 is rotated slightly in a clockwise direction, the relation of the channel and the passages with respect to the material will be such that a greater quantity of adhesive will be applied to the'surface of the material. If the pipe 27 is rotated in the opposite direction, the relation will be "changed so that'less adhesive will be supplied. The arrangement thus permits one to obtain variations in the thickness of the film applied to the material by manipulation of the pipe 27,. which may be conveniently performed with liquids,

rial is adapted to bedrawn and having plied to the material cannot be produced by the adjustment oi the apparatus as described above, other pipes provided with channels, dutts and passages of different dimensions may be easily substituted for the original pipe, so that a wide range of adjustability may be obtained with the apparatus.

The operation of winding the material upon the mandrel is continued until the walls of the article are of the required thickness, when the supply of adhesive is cut off. By arranging the valve 31 below the level of pipe 27, the supply of adhesive ceases as soon as the valve is closed, there being no tendency ing in the pipe 2 to continue to flow on to the material as would be the case if the valve 31 were located above the level .of the p When the winding operation is completed the material is severed, referably along a line adjacent to one of t e corners of the wound body Any adhesive on the outer face of the body w1ll finally dry and form a protecting coating. When the formation of'the body has been completed the bracket 4 is swung out of the way, the wedge 12 is driven out and the body may be then removed from the mandrel for subsequent treatment.

The above description shows one way in which the device of this invention may be employed, but it will be understood that it is of general utility and may be used for coatin any kind of material with any kind of liquid, and also that various changes may be made in the details of construction of the a paratus without departing from the principle of the invention as defined in the ap-' pended claims.

I claim:

1. In apparatus for coating sheet inaterial' with liquids, a member over which the material is adapted to be drawn and having an opening along its upper side through which the liquid may flow to the surface of the material, and a valve placed belowfthe level of the opening for controlling the flow of liquid therethrough.

2. In apparatus for coating sheet material with liqulds, a member over which the materiaLis adapted to be drawn and having an opening through which liquid may flow to the material, a valve placed below the level of the opening and adapted to control the flow ofliquid to the member, and a member; around which the sheet material travels after it has been coated in order to bring the coated side of the material uppermost.

3. In apparatus for coating sheet material a member over which the matefor the adhesive remain-- passageways through which the liquid flows to the material, and means for changing the angle of incidence of the material, with respect to the passageways to regulate the amount of liquid applied to the surface of the material.

4. Apparatus for coating the underside of sheet material with a continuous film of adhesive, comprising a pipe provided with a continuous channel along the top. thereof in communication with the interior of the pipe, the channel being of a length about equal to the width of the sheet material the top of the pipe being provided with laterally extending passages in communication with said channel.

5. In apparatus 'for coating sheet material with liquids, a tubular member provided ber, means for supplying liquid to the memher and a connection between the means and the member to .permit the member to be rotated about its longitudmal axis to vary the amount of liquid applied to the sheetmaterial.

7. In a paratus for coating sheet material with liquids, a tubular member having apertures communicating with the interior of the member and passages extending from p the apertures in the direction in which the material is drawn over the member, and means for supplying liqpid to the member comprising a part to w ich the member is secured, so that the member may be rotated about its axis to vary the quantlty of liquid supplied through the passages to the sheet material as it is drawn over the member.

8. In apparatus rial with liquids, a tubular member provided with a longitudinal channel along its outer 'face having communication with the interior of the member, passages extending from. the top of the channel in the direction in which the material is drawn over the member, a reservoir for holding liquid, a conduit for conve' ing liquid from the reservoir to the tubu ar member, a portion of said conduit being located below' the levelofthe' tubulan member, and a valve in the said portion of the conduit.

In testimony whereof I aflix my signature.

- GEORGE C. SNYDER.

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