US1525180A

US1525180A - Coating machine

Info

Publication number: US1525180A
Application number: US716085A
Authority: US
Inventors: Percy W Gumaer
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-05-27
Filing date: 1924-05-27
Publication date: 1925-02-03
Anticipated expiration: 1942-02-03

Description

P. W. GUMAER COATING MACHINE Feb. 3, 125.

Filed May 27 9 3 Sheets-Sheet 1 lNV NTOR 2 ww 'k ATTORNEY Feb. 3, 1925.

P. w. GUMAER COATING MACHINE Filed May 27 1924 3 Sheets-Sheet 2 ATTORNEY P. W. GUMAER COATING MACHINE 3 Sheets-Sheet 5 Filed May 27 1924 INVENTOR izfi M v ATTORNEY gamed Feb. 3, 19 5.

PERCY w. GUMAER; OF WEST ENGLEWOOD, NEW JERSEY.

coA'rmc MACHINE.

Application filed-Hay 27, 1924. Serial No. 716,085.

To all whom it may concern: 7

Be it known that I, PERCY W. GUMAER, a citizen of the United States, and a resident of West Englewood, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Coating Machines, of which the following is a specification.

My nvention relates to machines for coating long lengths or stripsof fabric and it may be used in coating fabric with rubber solutions orit may. be used in applying coatlugs to fabrics in the process of making artificial leather; and in fact the invention is useful in various processes wherevera coating is to be applied to a fabric. One object of my invention is to provide a machine wherein a number of separate coatings may be applied to the same side of a strip of fabric in successive relation, and all in. one continuous operation; and in the fullest embodiment of my invention all of the several coatings may be applied while the fabric is passing through'one common chamber. One object of my invention is to provide. a machine for applying successive coats to the fabric,

wherein the mechanism of the machine is arranged 1n compact relation and wherein there will be suflicient time for each coat to or chamber of considerablesi ze to permit the coat on the fabric to be dried :before the fabric was wound into a roll; and for each successive coat the fabric had to be run through the machine.

process was slow. In the present machine I contemplate applying a number of successive coats, to the fabric with the machine 00- cupying no more space than the machines above referred to in general use and to apply the successive coats/to the fabric atone passage of the fabric through the machine.

The mechanism so arranged that the several coats may be successively applied in a comparatively compact space andstill there is sufiicient length of travel for the fabric between the several points of coating to perinit each coat to dry before a successive coat is applied, Another object of my invention is to providelmean's for saving and recovering This required con-- 'siderable handling of the product and the a high percentage of the solvents evapoapplyingseven successive coatings to a fabric while being passed once through the machine and it willbe apparent that the ma chine may be arranged for applying a greater or lesser number of coatings. In fact,*& machine designed for a maximum application of seven coatings may be readily adapted for applying any lesser number of coatings as will be described hereinafter.

In the drawings forming part of this application,

Figure 1 ls a longitudinal sectional view of. a. machine embodying my invention,

Figure 2 is a sectional view taken on the line 22 of Figure 1,

Figure 3 is a plan view of the machine, Figure 4 is a sectional View taken on the line H of Figure 1,

Figure 5' is a sectional view taken on the line 5-5 of Figure 4, and I Figure 6 is an enlarged detail view. In the drawing I have shown a support '1 in which a roll 2 of fabric is placed and from which the fabric is taken for passage through the machine. The fabric passes from this roll first over a roller 3 arranged at a high elevation at one end of the ma chine, and it passes-through a slot 4 into a preliminary heating chamber 5 formed within the box 6. Within this box the fabric passes in a tortuous path successively over the guide rollers 7 and. from these it passes out of the chamber 5 through a slot 8 into the coating chamber. Within the preheating chamber I provide a series of coils of pipe 9 between the difl'erent runs of the.

fabric,'and steamis circulated through these pipes in order to heat the fabric preparatory to, the'application of the coatings. When the fabric leaves the heating chamber it passes under a guide roller 10. and over the guide rod or roller 11 and there is a spreading knife or scraper 12 arranged over the top surface of the fabric and pressing a ainst the latter between the roller 10 an the ins ed surface of the fabric engaging against this roller; and the fabric returns from the roller 16 toward the front of the machine forming a second or under run 17 lying just below the upper run 13. The roller body 16 is covered with carding cloth having wire teeth 20 corresponding to the carding cloth used in textile machinery. Toward the front of the machine the fabric then passes around an idle roller 18. This carding cloth of the roller 16 engages with the uncoated surface of the fabric and there is sufficient traction to propel the fabric.-. After passing around the roller 18 the fabric again travels in a horizontal run 21 toward the rear of the machine and between the roller 18 and a supporting pin or rod 22 the fabric passes under a second coating knife or scraper 23. The

, 38 in the wall of the casing, thence between run 21 extends to the rear of. the machine where the fabric passes around a second propelling roller 24 and it then travels forwardly to form the run 25 lying parallel and just below the run 21. In the manner just de scribed, the fabric is carried successively in the same manner around the

several rollers

26, 27, 28, 29, 30 and around the several propelling rollers 31, 32, 33, 34, 35 and after passing the last propelling roller the fabric travels around a guide roller 36 near the bottom of the machine and thence upwardly over a guide roller 37 and through a slot the outside guide rollers 39 and it is wound into the form of a roll 40 on a receiving arbor in the holder 41. Between the adjacent horizontal runs of thefabricI place a metal plate 42 which serves as a support for the heating coils and across the upper surface of each of these tables I arrange coils of pipes 43 through which steam may be passed to apply heat close to the adjacent horizontal runs of the fabric. The

rollers

18, 26, 27, 28, 29, and 30 are of suflicient diameter to space apart the several pairs of runs of fabric to provide space for the several spreading or coating devices. It will be noted that from the time the fabric receives its first coating at the scraper or knife 17 the coated surface does not contact with any' art of the machine until it has traveled twice the length of the drying chamber 14' and returns to the forward iding roller 18 and by the time the fabric as traveled this distance the solvent in the coating material will have been dried 'or set and it will have become sufiiciently set to receive the second coating which is applied at the knife or scraper 44. There is preferably a heating table"42 and there is a set of coils 43. placed between each pair of longitudinal runs of the fabric, so that heat is applied for drying each coating after it has been applied by the coating knife. and the operations are the same for each successive coat of material applied to the fabric.

The shafts of the several propelling rollers are carried through suitable bearings 45 in the shell of the machine and on the outer ends of these shafts and exterior of the casing I provide a gear 46 and these several gears mesh with intermediate pinions 4T.arranged between the several gears 46, and these several gears and pinions form a chain of gears all of which may be operated by means of a motor 48, shown in Figure 2. which has a gear 49 driving the lower- I form of liquid or paste will discharge upon the top surface of the fabric in advance of the spreading knife, so that as the fabric travels under this knife the latter will serve to spread the coating material upon the surface of the fabric in an even layer. There is a pipe 50 just in advance of each of the several coating knives and these" several pipes are connected with vertically arranged feed pipes 53 at opposite. sides of the machine, which vertical pipes are connected by the cross pipe 54 at the top to which a supply of coating material is fed from the pipe 55 leading from any source of supply.

The coating ,material' entering the pipe 55 feeds through the cross pipe 54 into both vertical pipes 53 and from these it passes into the several horizontal discharge pipes 50 so that some of the material is discharged :by each ofthese horizontalpipes upon the top surface of the fabric in advanceof a coating knife. In practice it is desirable to feed the coating material to the fabric faster than it is consumed so that some of the material forces off the side edges of the fabric and passes into the "discharge funnels 56 arranged at the sides of the fabric opposite the several spreading knives. The material flowing into these funnels dis: charges through t e vertically arranged pipes 57 which discharge one into the other,

and the material is carried away from the densate may be withdrawn through the pipe 59. The casing is formed with an extenfirst spreading knife 12, it receives on the heatin sion at one side of the coating chamber 14 and within or adjacent this extension I provide a suitable cooling device which may consist of a coil of pipe 61 adaptedto receive a flow of coolmg water through the connection 64 and preferably this cooling coil is extended horizontally across the bottom of'the casing as shown at 63 and the cooling liquid is discharged through the upper connection 62. I have arranged a series of inclined. bafile plates 65 at the side of the evaporated chamber for deflecting the vapors as they pass from the evaporating chamber into the cooling or condensing chamber 66 and also in order to prevent the direct radiation of heat from the heating coils 43 toward the cooling coils 61. When the machine is in operation there will be a continuous flow of coolin liquid, such as water, from any source 0 supply. through the cooling coils 61. r v

The machine having been started by the threading of the fabric around the various rollers described above, the fabric will be propelled at different points by means of the power appliedto the several propelling

rollers

16, 24 etc. As the fabric passes the top surface the first coat of material and the fabric then travelsalong over the first table 42 and the first set of heating 0011s 43; thence around the first propelling roller 16 and back again directly under the first heating table, during which time the first coat applied to the fabric is dried and set by the evaporation of -the solvents in the coating material. The fabric then passes around-the firstguide roller 18 and then under the second coating knife 12 where it receives a second coating applied directly over the first coating. This opera- 1 tion progresses until the fabric has received as many coatings as there are spreading devices, after whichthe fabric passes out of the coating chamber and is wound into the roll 40. I

The cooling action of the coil. 61 causes the vapors which pass from the evaporating chamber 14 between the bafile plates 65 to be cooled and condensed as rapidly as the vapors are evolved la the action of the heating coils 43 upon 6 1n the coatings and the condensed vapors solvents contained in the form of-liquid falls into the sump 58 atlthe bottom of the tank and it may be continuously or periodically removed through the pipe 59. v

It will be apparent from the above that I have provided a coating machine in which a number of coats may be applied successivelyto a strip of fabric in a chamber of comparatively slnall dimensions compared with the number of separate chambers heretofore used in applying the same number of coatings to fabrics. It will also be apparent that the various coats are all' applied while the fabric is moving once through the machine, thereby reducing the multiple coating to the simplest operation. Several elements in the present machine make it p-ossible to apply the successive coats in the same vaporizing chamber and to keep this chamber down to relatively small dimensions. One of these isthe fact that the coated surface of the fabric has a relatively. u long travel between each coating operation,

the travel being approximately twice the length of ,the evaporating chamber. Another is the arrangement of the fabric in" a plurality of closely related horizontal runs, and another is the fact that the vapors are cohdensed through the cooling system as rapidly as they are evolved by the heating of the coating material.

If it is desired to apply only six coats to the fabric, in a. machine which is designed, as 7 shown, for applying a maximum of seven chamber whereby'the fabric travels back and forth in a plurality of adjacent, sub stantially parallel runs, and means between said adjacent runs of fabric for heating the same.

coatings, then the fabric will notbe threaded t and propelling a. strip of fabric in said 2. A coatingmachine including acasing forming an evaporating chamber, a plurality of means in said chamber for sucr cessively applying coating material to a strip of fabric, means for guiding and propelling a strip of fabric in said chamber whereby thefabric travels back and forth in a plurality of horizontal, adjacent and substantially parallel runs following each of sa-id'coating means, and means between said adjacent HIS of fabric for heating the same after it ames from each of said coating means.

3. A coating machine comprising a casing forming an evaporating chamber, means in said chamber for applying coating material to a strip of fabric, means for guiding and propelling a strip ofifabric in said chamber whereby the fabric travels back and forth in a plurality of horizontal, ad-

jacent and substantially parallel runs, and heating coils arranged between said runs of the fabric.

4. A coating machine comprising a casing forming an evaporating, chamber, a

plurality of means adjacent one 'end of said chamber for successively applying coatings to the same side of a strip of fabric, and

, means for propelling the fabric in the said 'jacent runs of the fabric for heating the chamber whereby it is caused to travel back and forth in a plurality of adjacent, substantially parallel runs, andincluding a roller arranged near the opposite end of said chamber to the spreading device and engaging with the uncoated surface pf the fabric, and means arranged between the said adjacent runs of the fabric for heating the fabric. j

6. A coating machine comprising a cas ing forming an evaporating chamber, a plurality of means adjacent one end of said chamber for, successively applying coatings to the same side of a strip of fabric, means for guiding and propelling a strip of fabric in said chamber 7 back. and forth in a plurality of adjacent, substantially parallel runs, including a rollor near the opposite end of said chamber to .the applying means and engaging the uncoated surface of the fabric, and aroller forward of and intermediate the coating means and engaging the uncoated surface of the fabric, and means between the adlatter. j

7. A ooa-ting'ma-chine comprising a casing forming an evaporating chamber, a plurality of means adjacent one end of said chamber for successively applying coatings to the same side of a strinof fabric, means for guiding and pro llin a stri offabric in said chamber wh feby ihe falii'ictravels back and forth in a plurality of adjacent,

substantially parallel runs, including a roll- .er of compressible material near the opposite end of said chamber to the. applying means and e the uncoated surface of the whereby the fabric travels fabric, and a roller forward of and intermediate the coating means and engaging the coated surface of the fabric, andmeans beq tween the .adj'acent runs of the fabric for heating the latter.

8. A coating machine including a casing forming a preheating chamber, means for guiding a strip of fabric in a tortuous path through said preheating chamber, means for heating the fabric in said chamber, a casing forming an evaporating chamber for receiv: ing the strip of fabric from said preheating chamber, means for applying successive coatings to the fabric while traveling in said evaporizing chamber, means for guiding the fabric in a plurality of adjacent, substantially parallel runs between the coating means, and means between said adjacent runs of the fabric for heating the latter in said evaporizing chamber.

9. A coating machine including a casing forming an evaporating chamber, a plurality of coating means in said chamber ad-' jacent one end thereof, means for guiding and propelling the fabric in a plurality or adjacent, substantially horizontal runs "between the coating means, means between the adjacentruns of the fabric for heating the latter, and means for guiding the fabric as it passes from the lowermost guiding means to cause it to pass upwardly and outof the upper portion of said casing. p

10. A coating machine including a casing forming an'evaporating chamber, a plurality of means adjacent one end of said chamber for successively applying coatings to the same side of a strip of fabric, means for guiding and propelling a strip of fabric in said chamber whereby the fabric travels back and forth in a plurality of adjacent substantially parallel runs, including a roller near the opposite end of said chamber to the applying means, and engaging the uncoated surface of the fabric and a roller of larger diameter than said first roller, said latter, roller being arranged forward of and intermediate the coating means and engaging the coated surface of the fabric, and means between the adjacent runs of the fabric for heating the latter.

11. A coating machine comprising a casing forming an evaporating chamber, means for applying a coating to a strip of fabric, means for guiding'a strip of fabric in said evaporating chamber whereby the fabric travels back and forth in a lurality of adjacent, substantially paral e1 runs after leaving the coating means, means between the adjacent runs of the fabricfor heating the latter, andmeans for condensing thevapors evolved from the coating material by the heating operation.

12. A coating machine comprising :1 casin forming an evaporating chamber, a plur 'ty of means in said chamber for simulfabric in successive order, means for guiding and propelling a strip of fabric in said chamber whereby it is caused to. travel back and forth in a plurality of adjacent, substantially parallel runs following each coating device, means between the adjacent runs of the fabric for heating the latter and means for condensing the vapors evolved from the coating material by theheating operation.

J 13. A coatmg machine comprising a cas-' ing forming an evaporating chamber, a plurality of means in said chamber for simultaneously applying coatings to a strip of fabric in successive order, means for guiding and propelling a strip of fabric in said chamber whereby it is caused to travel back .and forth in a plurality of adjacent, substantially parallel runs following each coating device, means between the adjacent runs of the fabric for heating the latter and means common to all of the said heating means for condensing the vapors evolved from the coatings.

14. A coating machine comprising a casing forming an evaporating chamber, means in said chamber for applying coating material to a strip of'fabric,'mea'ns for propelling and guiding a strip of fabric in said chamber whereby itis caused to travel back and forth in a plurality of adjacent, substantially parallel runs, heating means between the adjacent runs of the fabric for heating the latter, said casing having an extension at the side of said heating means to form a condensing chamber, and means in said condensing chamber for condensing the vapors evolved from the fabric coating.

15. A coating machine comprising a easing forming an evaporating chamber, a plurality of means in said chamber for successively applying coatings to a. strip of fabric, means for guiding and propelling a strip of fabric whereby it is 'c'aused to travel-back and forth in adjacent, substantially parallel runs following each coating means, means between the adjacent runs of fabric for heating the latter, said casing having an extension forming a condensing chamber at the side of the several heating means and cooling means in sa d condensing chamber for condensing the vapors evolved in said evaporating chamber.

16. Aboatingmachine comprising .a casing forming" an evaporating chamber, a plurality of means in said chamber for successively applying coatings to a strip of fabric, means for guiding and propelling a strip of fabric whereby it is caused to travel back ,and forth in adjacent, substantially parallel runs following each coating means,

means-between the adjacent runs of fabric for heating the latter, said casing having an extension forming a condensing chamber at the-side of the several heating means and cooling means arranged in said condensing chamber at the side of said heating'means and at the bottom of said evaporating chamber, for condensing the-vapors evolved in said evaporatingchamber.

17. Acoating machine comprising a casing forming an evaporating chamber, fabric coating means, means in said evaporating chamber for heating the coated fabric, cooling means at the side of said heating means for condensing the Vapors evolved in the evaporating chamber, and baflies interposed between the said heating means and the said cooling means for preventing direct radiation betweensaid heating and said cooling means.

18. Acoating machine comprising a casing forming an evaporating chamber, and

to travel back and forth in a plurality of adjacent, substantially parallel runs after each coating means, means between the ad-l jaeent runs of fabric for heating the latter,

cooling means in said condensing chamber at the side of said evaporating chamber,

and inclined baflle plates arrangedbetween