US1575194A - Drier - Google Patents

Description

March 2 1926.

B. DEWEY DRIER 2 Sheets-Sheet l .Eea/ez *a Y @Hg/5- March 2 1926.

B. DEWEY DRIER lFiled Feb. 17, 1925 2 sheets-sheet 2 l'zve 7&0 7'.' l? radi? ewey t jgs.

Patented Mar. 2, 1926.

UNITED STATES PATENT OFFICE.

BRADLEY DEWEY, F CAMBRIDGE, MASSACHUSETTS, .ASSIGNOR `'.130 DEWEY AND ALMY CHEMICAL COMPANY, OF CAMBRIDGE, MASSACHUSETTS, A CQRPORATION 0F MASSACHUSETTS.

DBIEB.

appucation nica February 17. 1925. serial No. 9,824.

To all 'whom t may concern:

Be it known that I, BRADLEY DEWEY, a citizen of the United States of America, and resident of Cambridge, in the county of Middlesex and State of Massachusetts, have invented new and useful Improvementsy in Driers, of which the following 'is a specification. l

. This invention relates to driers and especially to driers adapted to dr can ends and other disk-like objects which ave been coated with a sealing medium or compound in a liquid or semi-liquid state which it is desired to dry completely or partially.

Objects of the invention are to provide a drier of the above type which is automatic in its performance and may be operated continuously with minimum cost, the articles being fed to the drier in any suitable or preferred manner; to provide a drier which occupies a minimum amount of space and which efiiciently performs its functions with a minimum amount of trouble and attention;

and to provide a drier having the new and improved features of construction and arran ement hereinafter described. y

T e invention is shown by way of illustration in the accompanying drawings in which:

Fig. 1 is a vertical sectional elevation of the drier; and

Fig. 2 is a View ofthe top of the `drier artly in plan and partly in section on the line 2 2 of Fig. 1.

Fig. 3 is 4a vertical sectional elevation of a modified form of drier, adapted to receive the covers at the bottom and to deliver themV at the to and Fig. 4 is a plan view of the same Wit parts broken away.

In the embodiment ofthe invention illustrade the drier comprises an upright, hollow inner supporting cylinder 1v having hollow annular extensions 2 and 3 respectively, and surrounding the extensions 2 and 3 are circular plates 4 and 5 respectively which close the opposite ends of the drier chamber, the

tubular extension 3 being supported in anyV suitable manner as by the sleeve-like support 6. Surounding the cylinder 1 and enclosm the drying chamber is a removablecasing which may be attached to the closure plates 4 and 5 as by screw 8, thus enabling the casing to be readily removed for inspecting the inside of the drier for cleaning or other pur- Y poses. Suitably secured to the outer periphery of the cylinder 1 is a spiral track 9 which may be of angle iron and which spirals around the outer surface of the cylinder from the upper portion thereof to the lower portion. Extending abovev and in parallel relationship of the s iral of the track 9 isa helically coiled gui e 10 which may be of steel and is circular in cross section. The upper end of the guide being suitably secured to the plate 4 and the lower end being secured to the plate 5.

The disk-like can ends A which have been previously lined with a liquid or semi-liquid lining compound may be introduced Yinto the drying chamber in any suitable manner such as for example b a slide or chute 11 extending through a s ot 12 in the casing 7 and a sli ht distance into the drying chamber. It wi l at once be apparent that the can ends admitted to the drying chamber assume an angular position, the inner edges thereof engaging the track 9 and the outer portions thereof loosel bearing a ainst the guide 10. A distinct a vantage cfg such construction and arrangement is that can ends of different diameters may be accommodated in the drying chamber without the necessity of changing the relative location of the component `.parts ofthe mechanism or replacin one or incre-of the arts when it is desire to employ the mec anism for a can end of different diameter.

The can ends are caused to travel through the d ing chamber from one end thereof to the ot er and for this purpose a disk 13 is journalled on the c linder extension 2, a similar disk 14 being ]aurnalled on the cylinder the disks 13 and 14 are conjoint-ly rotated and the rods 15, engaging an edge of the can* ends A and continuously propel them through the drying chamber guided by the track 9 and guide 10 from the upperportion of the drying chamber to the lower portion thereof Where they are discharged through an opening 18 in the lower closure plate 5 and fall upon a slide or chute 19 from which they ma7 be conveyed to any desired place.

The rying chamber may be heated `by any suitable means and as shown a burner 20 extends into the tubular extension 3 and slots 21 in the cylinder 1 permits the heated air to pass into the drying chamber and thus accelerate the evaporation of the liquid component in the lining compound previously distributed over the canV ends. A modified form of drier is shown by Fig. 3 in which like numerals refer to like parts, but distinguishes from the drier shown in Fig. 1, in that the covers are introduced at the bottom through chute 22 and withdrawn at the top through opening 23. To this end the inner guide member in its upper cycle as at 24 rises to a level and preferably slightly above the outervguide (or the outer guide is made horizontal and thus lower than the inner guide)- whereupon the cover slides over the outer guide member and is received by the chute 26 and between longitudinal guides 27 thereon.

An outstanding characteristic of theinvention resides in the fact that a drier constructed in accordance with the invention is capable of accommodating can ends of different sizes without change of parts. Another advantage consists in imparting positive rolling motion to the can ends through the drying chamber, this rolling motion bringing all parts of the lining compound into contact with the heated air in the drying chamber thus insuring more uniform and speedier evaporation of the liquid component of the sealing material. Another feature of the invention consists in the relatively easy accessibility of the parts for cleaning or other purposes.

Although I have shown and described a construction which is the best known to me at the present time it will be understood that numerous changes in detail of construction and arrangement may be effected without departing from the spirit of the invention especially as defined in the appending claims. F or example, the operation heretofore described may be reversed with minor changes in construction with equally beneficial results.

I claim:

- 1. A drier .comprising a vertically disposed drying chamber having means to admit can lends thereto, spiral means for supporting 4can ends at anangle in such a manner that the inner edges thereof are guided and the outer portions thereof are loosely supported, and means independent of said last means to cause the can ends to travel through said chamber.

2. A drier comprising a vertically disposed drying chamber having means to admit can ends thereto, a plurality of helical members constructed and arranged to support can ends at angle in such a manner that the inner edges thereof are guided and the outer portions thereof are loosely supported, and means to roll the can ends along said supporting means through the chamber.

3. A drier comprising a drying chamber having means for admitting can ends thereto, spiral means loosely to support can ends at an angle, and means to cause the can ends to travel through said chamber.

4. A drier comprising a drying chamber having means for admitting can ends thereto, means to heat said chamber, spiral means loosely to support can ends at an angle, said last means being constructed and arranged to accommodate different sized can ends, and means to roll said ends along said supporting meansthrough the drying chamber.

5. A drier comprising a vertically disposed drying. chamber having means for admitting 'can ends thereto, a spiral track iu said chamber, means extending above and in parallel relationship to said track'whereby the can ends may be supported with one edge thereof engaging said track and an outer portion thereof loosely bearing against said last means, and means to engage said ends and cause them to roll along said track through the drying chamber.

6. A drier comprising a vertically disposed annular drying chamber having means for admitting can ends thereto, means to heat the 'interior of said chamber, a spiral track within the chamber, a guide extending above and in parallel relationship to said track whereby the can covers may be supported at an angle with one edge thereof cngaging said track and an outer portion thereof loosely bearing against said guide, and driving means to -cause the can ends to travel with a curvilinear motion from one end to the other of the chamber.

7. A drier comprising a vertically disposed annular drying chamber having means for admitting can ends thereto, a removable casing for said chamber, a spiral track in said chamber a wire guide extending above and in parallel relationship to said track thereby to support can ends at an angle with one edge thereof resting in said track, said track and guide being constructed and arranged to accomodate can ends of different sizes, and driving means to roll said endsl along said track and guide through theI drying chamber.

8. A drier comprising a vertically disposed, A,annular drying chamber having means for admitting can ends thereto, a re- -movable casing for said chamber, a spiral track in said chalnbelli a wire guide-extending above and in para e1 relationship to said track thereby to sup rt can ends at an angle with one edge t ereof restingV in said track, said track and guide being constructed and arran to accomodate can ends of said ends along said track and guide through 10 the drying chamber.

Signed by me at Cambridge, Massachusetts, this 11th day of February, 1925.

BRADLEY DEWEY.

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