US1490590A - Drying machine - Google Patents

Description

.April 4"1"'5, 1924.

G. A. CARLSON DRYING MACHINE Filed Dec 17. 1921 Y WUeWT jf arif,

Patented pr. 15, 1924.

' 1,4905@ PATENT orifice.

GUSTAV A. CARLSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE BOYE NEEDLE COM PANY, F CHICAGO, ILLINOIS,

A CORPORATION 0F ILLINOIS. 1

DRYING MACHINE.

y drying small metal articles.

The primary object is to provide a simple and convenient apparatus for the purpose indicated.

The improved apparatus may be usefully employed, for example, in drying crochet needles, or crochet needle blanks which have been subjected to stamping or swaging operations in the manufacture of the needles. During such manufacture, the articles be `f' come more or less coated with oil or grease;

and to cleanse them, they are immersed in a pickling bath. After being cleansed in a bath, a drying operation is desirable. Heretofore it has been the practice to effect the drying of such articles in a rotary tumbling barrel, .or drum, containing saw-dust. Such an operation is more or less slow and expensive, necessitating a further cleaning or wiping operation.

In the use of the improved apparatus described, the crochet needles, or the partially completed needles, as the case may be, are taken from the bath and fed into one' end of an inclined rotary tube which is heated by means of steam. The articles are discharged at the lower end of the tube in a dry, clean, condition.

The invention is shown in its preferred embodiment in the accompanying drawing, in which:

Figure 1 represents a plan view of the improved apparatus; Fig. 2, a broken elevational view of the same; and F ig. 3, a broken longitudinal sectional View of the same on an enlarged scale.

In the construction illustrated, A represents a bed or table; and B, a rotary dryer mounted thereon. f

The dryer B comprises an inner tube 1, and an outer tube or jacket 2. Between these tubes is an annular space or chamber 3 whose ends are closed by means of rings 4, which are in the form of annular plugs inserted between the end portions of the tubes. The dryer B is journalled in bear- Seral No. 523,148.

ings C and C which are su )orted on thc e Pl table A. Each of these bearings comprises a cylindrical 'member' 5,r supported on a standard 6, mounted yon the table. The bore of the cylindrical member 5 is only slightly larger than the diameter of the outer tube 2 at the central portion ot' the bearing, as indicated at 7. A thin cylindrical bushing or sleeve 8 is interposed between the member -and the outer tube 2. The bore of the member 5 is enlarged atthe end portions, as indicated at 9, and these enlarged oortions of the bore receive the packing 9a and stung glands 10.

A steam inlet pipe 11 is connected with the upper side of the bearing C, and connects through a passage 11a with the annular chamber 3.

The construction at the bearing C is the same, and the parts are similarly lettered. Here, however, an exhaust pipe 12 is connected with the lower side of the bea-ring, and the heating fluid passes from this eX- haust pipe through the passage 12 communicating with the annular chamber 3. No inlet pipe is employed at the bearing C', of course.

The outer tube 2 is equipped at its central or intermediate portion with a bevel gear 1.3 which meshes with a bevel pinion 14 on a driving shaft 15, which is equipped with a pulley 16. This enables the rotary dryer B to be driven by means of a belt applied to the pulley 16.

The operation of the device is as follows:

Steam is admitted to the annular chamber 3, through the ypipe 11, and is exhausted through the pipe 12. The rotary dryer B is driven through the medium of the pulley 16, and the gears actuated thereby. rlhe articles to be dried are fed into the dryer at the upper end, which is designated 17, the dryer being set somewhat upon an incline, so that as the dryer rotates the articles being dried will gravitate slowly through the inner tube. The articles will be discharged at the lower end of the tube, where an inclined discharge chute 18 may be provided, if desired.

For drying small articles of the character referred to, the inner tube may suitably be of a diameter of about 6 inches, and the length of the dryer may be 10 or 15 feet.

The outer tube 2 is provided with a perforationv 11b which registers with the perfor-ation l1a of the bearing C at each revolution of the rotary dryer. If desired7 a series of such perforations 1lb may be provided, as indicated in Fig. 3. The sleeve 8 may be made to rotate with the dryer, if desired; or it may remain stationery. It' it be made to rotate, it is provided With a series of perforutions registering with the perforations 1lb of the tube 2. In a similar inenner, the outer tube 2 is provided with perforations 12b, and the reinforcing sleeve which corresponds with the slee-ve 8 is provided with registering perforations.

The foregoing detailed description has been given for elearness of understanding only and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible in view ot the prior art.

lhat l regard :is new, und desire to secure by Letters Patent, is:

l. In apparatus or". the character set forth the Combination of an inclined, jueketedA tube, bearings in which the jacket of said tube is journalled, inlet and outlet pipes connecting with said bearings and coininunieating through seid bearings With the interior or' the jeelieted space about said tube, and means for rotating the tube.

2. In apparatus of the character set forth the Combina-tion of a bed, a pair of bearings mounted thereon, said bearings being equipped et their ends with stuiing glands, a rotary inclined dryer journalled in said bearings and comprising an inner tube and an outer tube having an annular chamber between theni, the ends of seid annular chamber being closed, an inlet pipe Connecting with one of said bearings and communicating therethrough with said annular chamber, un outlet pipe connecting with the other of seid bearings and communicating therethrough with said annular chamber, a gear mounted on the outer tube, and means for actuating said gear.

' GUSTAV A. CARLSON.

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