US967076A - Apparatus for drying proofed and like fabrics or materials. - Google Patents

Description

v J. SPENLE. APPARATUS roa DRYING PBOOFED AND LIKE FABBIGS on MATERIALS.

APPLICATION FILED F2129, 190B. RENEWED JUNE 30, 1910. 967,076, Patented Aug. 9, 1910.

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"1' H I Macaw By %W @ZZ%,

J. SPENLE.

APPARATUS FOR DRYING PROOFED AND LIKHFABRIGS 0R MATERIALS. APPLICATION FILED P3129, 190a. RENEWED mm: 30, 1910.

967,,UF6 Patented Aug. 9, 1910.

4 SHEETS-SHEET 2.

J. SPE E'. APPARATUS FOR DRYING PROOFED AND LIKE FABRICS 0B MATERIALS.

fientea Aug. 9,1910.

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APPLICATION FILED FEB.29, 1908. RENEWED JUNE 30, 1910.

aw d J. S PENLE, APPARATUS FOR DRYING PROOFI-ID AND LIKE FABRICS 0R MATERIALS APPLICATION FILED FEB.29, 1908. RENEWED JUNE 30, 1910. QWFMWG Patented Aug. 9, 1910.

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JOHN SPENLE, 0F ,SALFORD, ENGLAND.

arrnnarus non DRYING rnoornn Am) LIKE rnsnrcs on mn'rnnrnns.

Specification of Letters Patent.

Patented Aug. 9, 1910.

Application filed February 29, 1908, Serial No. 418,619. Renewed June 30, 1910. Serial No. 569,692.

5 ford, in the county of Lancaster, England,

have invented certain new and useful Improvements in Apparatus for Drying Proofed and Like Fabrics or Materials, of which the following is a specification.

This invention relates to apparatus employed for drying proofed or like fabrics or materials which may have been treated with india-rubber, gutta-percha, oxidized oil's, pyroxylin, shellac or other substances held in solution or containing volatile solvents or fluids as ethers,benzenes, and spirits. 1n the drying operation the volatile solvents vaporize and produce noxious and inflammable vapors. The latter have heretofore been drawn olf from the drying chamber and condensed, but with such method it is necessary to use pumps or exhausters and surface condensers, and on account of air being drawn into the apparatus by the exhausting actionof the pumps, a very large .volumewf fluid has to be dealt with, necessitating the use of unnecessarily large pumps and condensers for the.- quantity' of solvent recovered Moreover, on account of the condensation of the moisture contained in the air drawn into the drying chamber as aforesaid, the volatile "solvents recovered may be conside'rablyibelow full concentratibn. s L.

The object of my invention is to produce an apparatus capable of not only drying the f'abrlc or material assing therethrough and of evaporating th volatile "solvents, but of condensin such solvents, the operation of condensatlon being performed without the use of umps or other exhausting appliances and without the volatile solvents, when recovered, being diluted or rendered impure in the manner before described.

My invention comprises the combination i deemed. by contact with the cooling surfaces in the'manner hereinafter described. Referring to the two accompanying sheets of explanatory drawings :-Figure 1 illustrates one convenientapplication of my invention and Figs. 2, 3, and5 threemodifled applications ofsame.

with a drying'chamber or its equivalent The same reference-letters in the difi'erent views indicate the same or similar parts.

In Fig. 1, my invention is shown as applied to a drying chamber used in conjunc tion with a printing machine a, in which volatile solvents are'employed to hold the printing materials in solution. I place within a the, drymg chamber 6 suitable steam chests (2, arranged vertically, for drying the fabric 0? by contact or by radiation in its passage through the chamber. I prefer to give the fabric in such passage avolute or like path as shownso as to obtain a long drying sur face, in the well known manner, before the face of thefabric comes into contact with.

the guiding rollers g. The walls ofthe drying chamber 6 are suitably cooled as by means of a jacket. By thismeans as the be hollow as shown and be steam heated to revent condensation thereon, as the conenters and passes out of the drying chamber at its lower end as shown to prevent the escape of the hot vapors which tend to rise to the top of the apparatus.

The apparatus illustrated at Fig. 1 may be used inconjunction with a padding, coating, spreading orlike machine instead of with a printing machine as illustrated.

In addition to' cooling the walls of the dry ingchamber as in the example illustrated at V Fig. 1, I may, asshownj at Fig. 2, place coolingchests or pipes it between the folds of the fabric and extendo'ne of the troughs or re ceptacles c to enable it to receive the condensed solvent which trickles down the surfaceof h. The top or upper end .fofthe chamber 6 in this case is made withsloping sides and steam is passed through the con duit-formed'at the top thereof as shown so as to keep the top of the apparatus sufliciently warm to prevent pondensation therepn,v The drying chamber 1n thls case is used inzicon-V.

junction'with a spreading machine In the apparatus illustrated at Fi .32, the

fabric passes in close proximity to -t cheating cheststor pipes c and the vapors 1 toward the top in order to restrict, as far as possible, the exit for the escape of vapors which tend to rise to the top of the chamber. I may close a portion ofthe upper end of the drying chamber b by a detachable cover j. If'the material is to be passed through the drying chamber several times, it is formed into a continuous web and passes through the drying chamber, and then back thereto as indicated in dotted lines.

When a horizontal drying apparatus is employed in conjunction with spreading 'or like devices, as used for example in indiarubber j and other proofing works, and as illustrated at Figs. 4 and 5 (the latterview being-takenat right angles to the former) I place the heating chests or pipes 0 within a suitable'casing is having therein one or more cooling chests or pipes as h and troughs e or their equivalent, as in the forms of apparatus before described, the top portion of" the casing is being arranged as shown to insurethat no drops of condensed solvent shall fall on to the material 03, being dried. I prefer however to employ a "vertical form v of drying chamber as illustrated at ,Figs. 1, 2, 3 and 4, for with the horizontal form only the upper heating surface of the drying chests can be su 'ciently taken advantage of, whereas in the vertical form the whole surface of theheating elements can be usefull employed.

en pipes are employed as cooling surfaces in the drying chamber, I preferably arran e-the same in aserpentine or circuitous" ormation but with sufficient vertical length between each bend as to insure that the drops of condensed solvent, which collect thereon at the upper end of the drying chamber, can trickle down the pipes to the troughs or receptacles, as e, at the bottom of such chamber.

By means of my improved apparatus, I

am enabled to recover in practically full concentration the solvents employed in the printing .or other operation, and thus to render possible the use of such solvents which have heretofore been considered too costly and dangerous for, ordinary work.

I prefer 'tfo'{arrange that the; rate of cooling can be adjusted at will, as for example by regulating the temperature" of the cooling fluid, so as not to set up too rapid cooling,

which, by reducing the pressure in the drying chamber, may induce air to enter the latter to take the place of the gases condensed therein and cause the disadvantages hereinbefore referred to.

Having now described my invention what I claim as new and. desire to secure by Letters Patent is 1. In apparatus for recovering volatile solvents or fluids contained in proofed and like fabrics or materials, in combination, an open chamber through which the wet treated fabric or material is passed,'means for heating and for cooling the interior of said chamber, and means passing said fabric or material in close proximity to the surface of said heated means and at a distance from said cooling means, substantially as set forth.

2. In apparatus for recovering volatile solvents or fluids contained in proofed and like fabrics or materials, in combination, a chamber into which the wet treated fabric or material is passed, heating and cooling elements within said chamber, and means giving the fabric or material a volute like path through said chamber, substantially as set forth.

3. In apparatus for recovering volatile solvents or fluids contained in proofed and like fabrics or materials, in combination, a chamber, a plurality of heating and cooling elements arranged alternately with one another within the said chamber,means giving the fabric or material a volute like path through said chamber and directing it between the heating and cooling elements, and receptacles for the condense solvent, in close roximity to the surface of said heating e ements, substantially as set forth.

4. In apparatus, for recovering volatile solvents or fluids contained in proofed and like fabrics or materials, in combination, a chamber having its upper end open, a Inrality of heatin and cooling elements a ter- 10o nately dispose in the said chamber and converging toward the upper end thereof, means for passing the fabric or material 'between ad acent heating and cooling sur-

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