US1819109A - Apparatus for treating flexible materials - Google Patents
Apparatus for treating flexible materials Download PDFInfo
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- US1819109A US1819109A US223858A US22385827A US1819109A US 1819109 A US1819109 A US 1819109A US 223858 A US223858 A US 223858A US 22385827 A US22385827 A US 22385827A US 1819109 A US1819109 A US 1819109A
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- liquid
- roll
- treating
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- chamber
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B2700/00—Treating of textile materials, e.g. bleaching, dyeing, mercerising, impregnating, washing; Fulling of fabrics
- D06B2700/27—Sizing, starching or impregnating fabrics
Definitions
- the present invention relates, generally, to improvements in method and apparatus for coating or impregnating or treating papers,
- the invention relates, more particularly, to method and apparatus for im regnating, coating, or otherwise treating 0 other products, in sheet, tape or other form,
- V with a solution or suspension in a vacuum such as a nitro cellulose solution.
- the invention has for a principal object to provide method and apparatus for rapidly an economically impregnating, coating or otherwise treating paper, fabric, or material such as nitro-cellulose films, or other materials and removing the solvent or carrier from the treated material.
- Another object of the invention is to provide method and apparatus for rolling sheet material from one roll and rolling it up again into another roll in a short s ace and at a fairly ra id rate of speed, an treating and drying t e material during the process of rolling and unrolling.
- FIG. 60 The apparatus of the invention 1s clearly 0th, paper, nitro-cellulose or illustrated in the accompanying drawings, in which V, Figure 1 is an elevation view in section of one form thereof; Figure 2 is a side elevation View, in part cut away, of the apparatus of Figure 1; Figure 3 is a side elevation v ew in part cut away of an alternate embodiment of the invention; and Figure 4 is an elevatlon view, in part cut away, and lookin 1n the direction of the arrows 4-4 0 Figure 3.
- the reference character 1 indicates a vertical longitud nal casing supported by the legs 2, 2.
- the side walls 3 and 4, asshown, are continuous from top to bottom and between them across the front and back are the spaced apart slats or bars 5, 6, 6, and 7
- Top and bottom closures 8 and 9 are made with air tight contact respectively with said sides 3 and 4 and bars 5, 5, and with said sides 3 and 4 and said bars 7, 7.
- the air tight frames 10, 10 which are held in place by the bolts 11, 11 and wing nuts 12, 12, and have glass plate13 set therein and carried thereby 1n air tight relation.
- sides 3 and 4 are the electric heating units 14, 14, conventionally shown, which are movable on the jointed supporting arms 15, 15 so that they can be adjustably positioned between the window sides of the casing 1 and the center thereof.
- Flexible conductor leads 17, 17 extend through said sides 3 and 4 and serves to make electrical connection to said heaters 14, 14.
- Said casing 1, at said top 8 is provided wlth a pipe connection 18 for joining to a pump, not shown; and a vacuum and pressure gauge 19 is provided at one side, near the top.
- a pipe connection 18 for joining to a pump, not shown; and a vacuum and pressure gauge 19 is provided at one side, near the top.
- On said shaft 224s mounted a roll of paper 27 which extends over said idler roll 26 and therefrom'in a span 28, to and over said idler roll'25 and thence to said shaft 20 where it is wound in a roll 29.
- a closure 30 which is removable and replaceable.
- Each of said closures carries projecting therethrough' a liquid or paint spray gun 31, of the well known type, having an air ressure hose 32 and a llquid or paint fee hose 33; said spray guns 30 being projected, one toward each -slde of said paper span 28 near the bottom thereof.
- each of said closures 34 carries in air tight relation thereto a flat wide tube 35 which extends diagonal- 1y upwardly and inwardly from a point outside said casing 1 to a point near the center thereof.
- Said tubes 35, 35 are of a width substantially that of the paper in said rolls 27 and 29; and each of these tubes carries a wick 36 which makes a good fit with its tube but is slidable therein and extends from the outer end of its tube into contact with the respective side of said paper span 28 which is next to it.
- Each of said closures 34, 34 carries in airtight relation therewith a-box or casing 37 about the outer end of respective tube 35 and wick 36, and each has an air tight cover 38.
- a quantity of treating llqllld 39 reaching above the outer end of the respective wick 36 and adapted to move through thewick and onto the paper surface in contact with the inner end of the wick.
- Near the upper end of each of said boxes 37 is to move the wick into-and out of enga mounted a .valve 40 for applying air pressure, when desired, to the interior of the respective box to 'aid -in feeding treating liquid through said wicks 36,36.
- drain valve 41 is provided for 'emptyingeach of said boxes 37, 37.
- Transversely across 'each of said boxes 37, 37 is mounted a shaft 42 which carries the toothed wheels 43, 43 which latter engage a respective wick 36,'and, by the .turn
- the method consists in running a continuous roll of the material to be treated in a heated or unheated vacuum chamber and to impregnate or coat with a solution or liquid suspension maintained exterior to the vacuum chamber and supplied to the'material as it is applied thereto, without breaking the vacuum.
- An unwind roll 27 is mounted on said shaft 22 and the outer end thereof over said rollers 26 and 25 and started on said rewindin shaft 20, the casing 21 is closed up to a tigEt seal, and heat supplied by passing current through said resistor heaters 14, 14.
- a suction system is then connected to said casing 1 through'either or .both of said pipes 18 and 45. As shown, and particularly when both sides of the material is to be treated, the material is, preferably, run vertically through the treating chamber.
- the shaft 20 then is rotated by power means, not shown, and
- the ends of said wicks 36, 36" with said span 1 28 is adjustable to regulate the amount of liquid applied to said span.
- the rate of speed ofthe'unwind and the rewind can be regulated in accordance with the rate of applicaing of the treating material.
- Treatingsolution lean also be applied by means of the spray guns 31, 31 which latter tion of solvent and-the rate of. drying or our-- can be controlled in a well known manner to regulate the amount or rate of feeding to the span 28 as it passes thereby.
- the spray guns 31, 31 which latter tion of solvent and-the rate of. drying or our-- can be controlled in a well known manner to regulate the amount or rate of feeding to the span 28 as it passes thereby.
- FIGS 3 and 4 of the drawings is shown an alternate embodiment of the apparatus of the invention which is somewhat similar to that of Figures 1 and 2 except for the following distinction.
- a single closure member 50 each of which, near its top, carries a spray gun 31.
- Each of sald closures 50 carries on its inner side a box or tank 51 which is entirely closed except at the inner side thereof whereinv is an opening through which extends a liquid feeding roll 52.
- Each of these said feeding rolls 52, 52 extends into its respective box 51 to a level below the upper level of the inner wall of said box 51 and also extends laterally and inwardly beyond the edge of said inner Wall.
- the two said rolls 52, 52 are movable, by means not shown, toward and from each other for regulation of the distance between them in accordance with the thickness of the material to which liquid is to be fed by these rolls.
- the walls of said boxes 51, 51 extend into such close proximity to its respective roll 52 as to provide substantial obstruction against evaporation of liquid from said box but at the same time permitting a rotation of said rolls on their axes.
- Each of said boxes 51 is provided with a valve 53 and a valve 54 at the top and bottom, respectively, of the respective box. These valves serve for supplying liquid to said boxes 51 and for withdrawing it therefrom.
- the spray guns 31, may be used for applying the liquid to the material span 28 as it is wound from one roll onto another, the same as in the operation of the embodiment shown in Figures 1 and 2.
- the apparatus shown in Figures 1 and 2 and also shown in Figures 3 and 4 can be used for applying the liquid in still another manner, as follows
- a roll of material 27 is mounted on the shaft 22 and the bottom of the casing 1 is filled to a level above the top of said roll 27 and the latter thoroughly moistened or impregnated therewith.
- the material is then unwound from roll 27 onto said roller or shaft 20 after which the excess of liquid is withdrawn throu h said valve 46 which is then closed to ma e air tight.
- Heat is then applied by means of the units 14, 14 and the casing attached to a suction system, the maplurality of fabrics simultaneously as for example, for pasting two materials together into a single flexible sheet with a water proofing application.
- the method of the invention provides for an effective and even distribution of material over the surface to which it is applied for uniform and thorough drying, curing or other treatment of the material applied.
- This method also does away with the disadvantages attending treatment in the 0 en air and particularly it eliminates wr' es, cockles, air blisters, and unevenness which often occurs in the application of varnishes, sizing, impregnations and other materials to fabrics, papers and other such materials.
- the apparatus and method of the invention are of advantage in the treatment of fabric, paper, or other material with short fibres because the treatment rovides drying with a minimum amount 0 heat and time. Likewise, because a minimum amount of heat can be used for drying, colored materials can be treated, or can be applied and treated in the apparatus of the invention without deteriorating the colors.
- a liquid applying means comprising a wick extending from without through substantially air tight passage through a wall means permitting the sup lyin ofa liquid to said wick at a point outsl e sai chamber and permitting the maintenance ofa greater ressure outside said chamber than in it w ereby feedin of the liquid by means of said wick is ai ed.
- Apparatus for applying a liquid suspension or solution having a volatile constituent comprising, an enclosing chamber adapted for maintaining a reduced pressure when connected to a suction system, and means for feeding a liquid in a continued stream from a point outside said chamber to an application point within, said means extending from outside said chamber to the interior and being in reduced pressure maintaining relation with respect to the wall,
- Apparatus for the applying of liquid suspension or solution having a volatile constituent to a flexible sheet comprising a substantially closed chamber, liquid reservoirs at 1 either side thereof, wicks inclined upwardly from the reservoirs and extendin the walls of the chamber, said wic s having through juxtaposed ends to engage a flexible sheet therebetween, means for drawing such a sheet past the wick ends, and duct connections to the chamber. and reservoirs respectively, whereby a pneumatic pressure difierential may be set up in the same to aid flow of liquid alon thevwicks.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
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Description
Aug. 18, 1931. B. c. MILLER 1,819,109
APPARATUS FOR TREATING FLEXIBLE MATERIALS Filed Oct. 4, 1927 2 SheetsSheet 1 1 J A 21% f," 229 2a 6 g; .5 6 w w 1i Q) 75a;- BY
ATTORNEY Aug. 18, 1931. B. c. MILLER 1,819,109
APPARATUS FOR TREATING FLEXIBLE MATERIALS Filed Oct. 4, 1927 2 Sheets-Sheet 2 BY 3% W I ATTORNEY Patented Aug. 18, 1931.
UNITED STATES PATENT orrlca 3m 0. IILLER, 01' NEWABKIWEW JERSEY, ASSIGNOB TO 8. D. WARREN CODA. OI BOSTON, MASSACHUSETTS, A CORPORATION OF WGEUBITTI APPARATUS FOR TREATING FLEXIBLE MATERIALS Application filed October 4, 1827. Serial Io. 223,858.
The present invention relates, generally, to improvements in method and apparatus for coating or impregnating or treating papers,
cloth or other such material with solutions or suspensions of varnishes, lacquers, or other materials or chemicals and for removing the solvent or carrier of the solution or suspension from the material treated, and also for A drying the treated material. The invention relates, more particularly, to method and apparatus for im regnating, coating, or otherwise treating 0 other products, in sheet, tape or other form,
V with a solution or suspension in a vacuum such as a nitro cellulose solution.
The invention has for a principal object to provide method and apparatus for rapidly an economically impregnating, coating or otherwise treating paper, fabric, or material such as nitro-cellulose films, or other materials and removing the solvent or carrier from the treated material.
Another object of the invention is to provide method and apparatus for rolling sheet material from one roll and rolling it up again into another roll in a short s ace and at a fairly ra id rate of speed, an treating and drying t e material during the process of rolling and unrolling.
Other objects of the invention reside in the several steps of the method or process of the invention and in combinations of such steps, and also in several detail features of the apparatus and in combinations thereof, not at this time more particularly enumerated, but clearly understood from the following detailed description of the method and apparatus of the invention.
With the various objects of the invention in view, the same consists, primarily, in the novel arrangements and combinations of parts maln'ng up the treating apparatus hereinafter set forth, and of the method herein described, and, the invention also consists in the details of the construction of said parts and methods and steps thereof all of which will be hereinafter more fully described and finally embodied in the claims appended hereto.
60 The apparatus of the invention 1s clearly 0th, paper, nitro-cellulose or illustrated in the accompanying drawings, in which V, Figure 1 is an elevation view in section of one form thereof; Figure 2 is a side elevation View, in part cut away, of the apparatus of Figure 1; Figure 3 is a side elevation v ew in part cut away of an alternate embodiment of the invention; and Figure 4 is an elevatlon view, in part cut away, and lookin 1n the direction of the arrows 4-4 0 Figure 3.
Similar characters of reference are employed 1n all of the hereinabove described v1ews, to indicate corresponding parts.
Referring now to said drawings, the reference character 1 indicates a vertical longitud nal casing supported by the legs 2, 2. The side walls 3 and 4, asshown, are continuous from top to bottom and between them across the front and back are the spaced apart slats or bars 5, 6, 6, and 7 Top and bottom closures 8 and 9 are made with air tight contact respectively with said sides 3 and 4 and bars 5, 5, and with said sides 3 and 4 and said bars 7, 7. As shown, across the upper four openings between the sides 3 and 4 and the bars 5, 6, 6, there are provided the air tight frames 10, 10 which are held in place by the bolts 11, 11 and wing nuts 12, 12, and have glass plate13 set therein and carried thereby 1n air tight relation.
Said casing 1, at said top 8 is provided wlth a pipe connection 18 for joining to a pump, not shown; and a vacuum and pressure gauge 19 is provided at one side, near the top. Across the center of the sides 3 and 4 near the top is provided the winding axle 20, which extends therethrough in air tight bushmgs, not shown, and carries on its outside ends the driving pulleys 21, 21. Directly below the said shaft 20 and aligned Carried by said A of said sha ts 20 and 22, are the shafts 23 and 24, each of which carries an idler roller and 26, respectively. On said shaft 224s mounted a roll of paper 27 which extends over said idler roll 26 and therefrom'in a span 28, to and over said idler roll'25 and thence to said shaft 20 where it is wound in a roll 29.
In the fourth open space from the top between said bars 6, 6, on each side, is mounted, in air tight relation, a closure 30 which is removable and replaceable. Each of said closures carries projecting therethrough' a liquid or paint spray gun 31, of the well known type, having an air ressure hose 32 and a llquid or paint fee hose 33; said spray guns 30 being projected, one toward each -slde of said paper span 28 near the bottom thereof.
In the next open space, which is the lowermost, is mounted the air tight closure 34, one on each side of said casing 1. Each of said closures 34 carries in air tight relation thereto a flat wide tube 35 which extends diagonal- 1y upwardly and inwardly from a point outside said casing 1 to a point near the center thereof. Said tubes 35, 35 are of a width substantially that of the paper in said rolls 27 and 29; and each of these tubes carries a wick 36 which makes a good fit with its tube but is slidable therein and extends from the outer end of its tube into contact with the respective side of said paper span 28 which is next to it. Each of said closures 34, 34, carries in airtight relation therewith a-box or casing 37 about the outer end of respective tube 35 and wick 36, and each has an air tight cover 38. In each of said boxes 37, 37 is shown a quantity of treating llqllld 39 reaching above the outer end of the respective wick 36 and adapted to move through thewick and onto the paper surface in contact with the inner end of the wick. Near the upper end of each of said boxes 37 is to move the wick into-and out of enga mounted a .valve 40 for applying air pressure, when desired, to the interior of the respective box to 'aid -in feeding treating liquid through said wicks 36,36. drain valve 41 is provided for 'emptyingeach of said boxes 37, 37. Transversely across 'each of said boxes 37, 37 is mounted a shaft 42 which carries the toothed wheels 43, 43 which latter engage a respective wick 36,'and, by the .turn
ing thereof by means of a handle 44, serve illustrated in Figures 1 and 2 and above described, and according to the method of the invention, for the purpose of treating, coating, sizing, impregnating, coloring, or fusing of paper or paper surfaces, fabric, or any flexible material for altering or qualifying such materials for various uses can be done as follows. In the first place, the method consists in running a continuous roll of the material to be treated in a heated or unheated vacuum chamber and to impregnate or coat with a solution or liquid suspension maintained exterior to the vacuum chamber and supplied to the'material as it is applied thereto, without breaking the vacuum.
, An unwind roll 27 is mounted on said shaft 22 and the outer end thereof over said rollers 26 and 25 and started on said rewindin shaft 20, the casing 21 is closed up to a tigEt seal, and heat supplied by passing current through said resistor heaters 14, 14. A suction system is then connected to said casing 1 through'either or .both of said pipes 18 and 45. As shown, and particularly when both sides of the material is to be treated, the material is, preferably, run vertically through the treating chamber. The shaft 20 then is rotated by power means, not shown, and
applied as by means of said pulleys 21, 21 to rewind the material into a roll 29 and unwind it of]? said roll 27, the span 28 thereof being exposed to the liquid applying and the dryin means shown.
hen liquid is to be applied from said box 37, 37 the handles 44, 44 are turned to bring the inner ends of said wicks 36, 36 against the surfaces of said span 28 above said roll 26. The suction applied to said casing 1 will draw the liquid 39 from said box 37 through wicks 36, 36 which will apply it to flexible material as it is unrolled from theroll 27 and passed cooperate to drive the solvent from the liquid coating or impregnation on said span 28 and carry it out of the chamber whereby a rapid a curing of the material left after the vaporization of the vehicle or solvent of the suspension or solution. When desired or necessary pressure can be applied through the .to said roll 29. "Both the heat and vacuum 11oand complete drying'is eifected together with .valves 40, 40 to aid; in feeding the liquid suspension or solution 39, 39 through-said wicks 36, 36. Sa1d wicks serve also as a scraper or smoothers to secure an even and uniform application of the liquid to the material passed therebetween, and the amount of contact of.
the ends of said wicks 36, 36" with said span 1 28 is adjustable to regulate the amount of liquid applied to said span. The rate of speed ofthe'unwind and the rewind can be regulated in accordance with the rate of applicaing of the treating material.
Treatingsolution lean also be applied by means of the spray guns 31, 31 which latter tion of solvent and-the rate of. drying or our-- can be controlled in a well known manner to regulate the amount or rate of feeding to the span 28 as it passes thereby. In some cases it will be advantageous to use both the wicks 36, 36 and the spray guns 31, 31 for appl ing the liquid or li uids and particularly w ere they are of a di erent nature or constituency.
In Figures 3 and 4 of the drawings is shown an alternate embodiment of the apparatus of the invention which is somewhat similar to that of Figures 1 and 2 except for the following distinction. In place of said closures 30 and 34, on each side, there is a single closure member 50, each of which, near its top, carries a spray gun 31. Each of sald closures 50 carries on its inner side a box or tank 51 which is entirely closed except at the inner side thereof whereinv is an opening through which extends a liquid feeding roll 52. Each of these said feeding rolls 52, 52 extends into its respective box 51 to a level below the upper level of the inner wall of said box 51 and also extends laterally and inwardly beyond the edge of said inner Wall. The two said rolls 52, 52 are movable, by means not shown, toward and from each other for regulation of the distance between them in accordance with the thickness of the material to which liquid is to be fed by these rolls. The walls of said boxes 51, 51 extend into such close proximity to its respective roll 52 as to provide substantial obstruction against evaporation of liquid from said box but at the same time permitting a rotation of said rolls on their axes. Each of said boxes 51 is provided with a valve 53 and a valve 54 at the top and bottom, respectively, of the respective box. These valves serve for supplying liquid to said boxes 51 and for withdrawing it therefrom.
In the use and operation of this embodiment of my invention, the spray guns 31, may be used for applying the liquid to the material span 28 as it is wound from one roll onto another, the same as in the operation of the embodiment shown in Figures 1 and 2.
Also, when a body of treating liquid solution 55 is in said boxes 51 to a height above the bottom of said rolls 52 and said rolls 52 each moved laterally into frictional contact with said span 28, the said rolls 52 will be rotated by the material of said span 28 as it passes from said roll 27 to said roll 29 and said rolls 52, 52 will pick up said liquid 55 and feed it onto the material passed therebetween.
The apparatus shown in Figures 1 and 2 and also shown in Figures 3 and 4 can be used for applying the liquid in still another manner, as follows A roll of material 27 is mounted on the shaft 22 and the bottom of the casing 1 is filled to a level above the top of said roll 27 and the latter thoroughly moistened or impregnated therewith. The material is then unwound from roll 27 onto said roller or shaft 20 after which the excess of liquid is withdrawn throu h said valve 46 which is then closed to ma e air tight. Heat is then applied by means of the units 14, 14 and the casing attached to a suction system, the maplurality of fabrics simultaneously as for example, for pasting two materials together into a single flexible sheet with a water proofing application.
The method of the invention provides for an effective and even distribution of material over the surface to which it is applied for uniform and thorough drying, curing or other treatment of the material applied.
This method also does away with the disadvantages attending treatment in the 0 en air and particularly it eliminates wr' es, cockles, air blisters, and unevenness which often occurs in the application of varnishes, sizing, impregnations and other materials to fabrics, papers and other such materials. The apparatus and method of the invention are of advantage in the treatment of fabric, paper, or other material with short fibres because the treatment rovides drying with a minimum amount 0 heat and time. Likewise, because a minimum amount of heat can be used for drying, colored materials can be treated, or can be applied and treated in the apparatus of the invention without deteriorating the colors.
I am aware that some changes, other than those already indicated, may be made in the various arrangements and combinations of several devices and parts, without departing from the scope of this invention, as above described, and as defined in the appended claims, hence, I do not limit my invention to the exact arrangements and combinations of parts or devices nor to the exact combina tions or sequence or order of the steps in the method as described in the foregoing specification, nor do I confine myself to the exact details of the construction of said parts as illustrated in the accompanying drawings.
1. In an apparatus comprising an enclosed chamber, a liquid applying means comprising a wick extending from without through substantially air tight passage through a wall means permitting the sup lyin ofa liquid to said wick at a point outsl e sai chamber and permitting the maintenance ofa greater ressure outside said chamber than in it w ereby feedin of the liquid by means of said wick is ai ed. 2. Apparatus for applying a liquid suspension or solution having a volatile constituent, comprising, an enclosing chamber adapted for maintaining a reduced pressure when connected to a suction system, and means for feeding a liquid in a continued stream from a point outside said chamber to an application point within, said means extending from outside said chamber to the interior and being in reduced pressure maintaining relation with respect to the wall,
thereof.
3. Apparatus for the applying of liquid suspension or solution having a volatile constituent to a flexible sheet,comprising a substantially closed chamber, liquid reservoirs at 1 either side thereof, wicks inclined upwardly from the reservoirs and extendin the walls of the chamber, said wic s having through juxtaposed ends to engage a flexible sheet therebetween, means for drawing such a sheet past the wick ends, and duct connections to the chamber. and reservoirs respectively, whereby a pneumatic pressure difierential may be set up in the same to aid flow of liquid alon thevwicks.
, In testimon that I claim the invention set forth above I ave hereunto set my hand this 27th day of September 1927f BERT c. MI LER.-
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US223858A US1819109A (en) | 1927-10-04 | 1927-10-04 | Apparatus for treating flexible materials |
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Application Number | Priority Date | Filing Date | Title |
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US223858A US1819109A (en) | 1927-10-04 | 1927-10-04 | Apparatus for treating flexible materials |
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US1819109A true US1819109A (en) | 1931-08-18 |
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US223858A Expired - Lifetime US1819109A (en) | 1927-10-04 | 1927-10-04 | Apparatus for treating flexible materials |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462202A (en) * | 1944-01-29 | 1949-02-22 | Selas Corp Of America | Heat treating |
US2516282A (en) * | 1946-04-27 | 1950-07-25 | Carnegie Illinois Steel Corp | Apparatus for heat-treating steel |
US2571815A (en) * | 1947-07-12 | 1951-10-16 | Remi A Benoit | Apparatus for and method of drying |
US2898882A (en) * | 1953-08-20 | 1959-08-11 | Du Pont | Apparatus for coating and drying photographic layers |
US3505974A (en) * | 1967-11-14 | 1970-04-14 | Edwards High Vacuum Int Ltd | Vacuum deposition apparatus |
-
1927
- 1927-10-04 US US223858A patent/US1819109A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462202A (en) * | 1944-01-29 | 1949-02-22 | Selas Corp Of America | Heat treating |
US2516282A (en) * | 1946-04-27 | 1950-07-25 | Carnegie Illinois Steel Corp | Apparatus for heat-treating steel |
US2571815A (en) * | 1947-07-12 | 1951-10-16 | Remi A Benoit | Apparatus for and method of drying |
US2898882A (en) * | 1953-08-20 | 1959-08-11 | Du Pont | Apparatus for coating and drying photographic layers |
US3505974A (en) * | 1967-11-14 | 1970-04-14 | Edwards High Vacuum Int Ltd | Vacuum deposition apparatus |
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