US2779104A - Drying cylinder - Google Patents

Description

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Jan. 29, 1957 c. SIMS DRYING CYLINDER Filed Aug. 26, 1955 1\ a i v u a a United States Patent DRYING CYLINDER Curtis Sims, Lanett, Ala. Application August 26, 1955, Serial No. 530,858 1 Claim. (Cl. 34-110) This invention relates to a drying cylinder for use in textile mills in the drying of fibrous materials such as yarn and the like and more particularly to an improved head for such a cylinder.

An object of my invention is to provide a head for a drying cylinder which shall be of a construction to reduce the overall length of the cylinder.

Another object of my invention is to provide a head for a drying cylinder which shall be adapted for construction from relatively thin material without sacrificing strength or safety, thereby bringing about a saving in both material and weight over conventional type heads.

A further object of my invention is to provide a head of the character designated in which the peripheral contact between the head and the cylinder is over a relatively large area thus providing a sturdy cylinder construction.

A still further object of my invention is to provide a head for a drying cylinder which shall be simple of construction, economical of manufacture and one in which the entire head including the back pressure valves are positioned inwardly of the ends of the cylinder.

Heretofore in the art to which my invention relates, heads for drying cylinders have been either outwardly dished or flat and made of thick steel plates which are thoroughly stayed by iron rods. Also, the cylinders have been secured to the heads, by shrinking an outer ring over the head. Accordingly, these heads have been very expensive to manufacture due to the cost of material employed as well as to the time and skill required to assemble such heads.

In accordance with my invention I overcome the above difiiculties by providing disc-shaped heads having annular, inturned curved portions adjacent the peripheries thereof terminating in outwardly extending annular flanges which fit snugly within the ends of the cylinder shell.

A drying cylinder embodying features of my invention is illustrated in the accompanying drawing forming a part of this application, in which the single figure shown is a front elevational view of the drying cylinder, partly broken away and in section.

Referring now to the drawings for a better understanding of my invention, I show a drying cylinder having a cylindrical shell 11 and heads 12 and 13 at opposite ends thereof. Secured to the heads 12 and 13 by any suitable means, such as bolts 14, are hollow journals 16 and 17 which are mounted for rotation in bearings 18 and 19, respectively. The bearings are mounted on a suitable supporting structure, indicated generally at 21. Connected to the hollow journal 16 by means of a sliding seal 22 is a steam supply conduit 23 for supplying steam to the cylinder 10. Connected to the hollow journal 17 by means of a sliding seal 24 is a conduit 26 for removing exhaust steam from the cylinder 10.

In view of the fact that my improved heads 12 and 13 are identical in construction, a description of one will suffice for both. The head 12, comprises a disc-like plate formed of sheet material, such as steel, and embodies a centrally disposed flat portion 27 joined to an annular inturned curved portion 28 which terminates in an outwardly extending peripherial flange 29. That is to say, the annular inturned portion 28 and the outwardly extending flange 29 form an outwardly opening dished section adjacent the periphery of the head 12 which is generally J-shaped, as viewed in cross section. A centrally disposed opening 30 is provided in the head 12 in communication with the hollow journal for passing steam through the cylinder.

Suitable openings 31 are provided in the heads 12 and 13 for receiving vacuum or back pressure valves 32 which are provided to prevent the formation of vacuum as the cylinder cools ofl, such as when the supply of steam is cut off.

Positioned outwardly of the centrally disposed flat portion 27 and secured thereto by any suitable means, such as by welding, is an annular reinforcing plate 33. Threaded openings are provided inthe flat portion 27 and in the reinforcing plate 33 for receiving the bolts 14, whereby the journals 16 and 17 are secured to their respective heads.

From the foregoing it will be seen that I have devised an improved head for a drying cylinder which greatly simplifies the construction of the cylinder and reduces the overall length thereof. By providing an outwardly opening annular dished section adjacent the periphery of the head, the head may be formed of relatively thin sheet material without sacrificing strength or safety. Also, the outwardly extending peripheral flange on the head fits snugly within the cylinder shell 11 thereby providing a relatively large contact surface between the head and the shell. The particular shape of my improved head, together with the annular reinforcing plate 33 forms a sturdy head construction, which in actual practice, has proven to be satisfactory in every respect. Furthermore, by mounting the back pressure or vacuum valves along the inwardly curved portion of the head, the valves are positioned inwardly of the ends of the cylinder.

While I have shown my invention in but one form, it will be obvious to those skilled in the art that it is not so limited but is susceptible of various changes and modifications without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are specifically set forth in the appended claim.

What I claim is:

A drying cylinder comprising a cylindrical shell, discshaped heads for said cylinder having annular, inturned curved portions adjacent the peripheries thereof terminating in outwardly extending annular flanges which fit snugly within opposite ends of said shell and define outwardly opening dished sections which are generally J-shaped as viewed in cross section, means securing said flanges to said shell, reinforcing plates secured to the outer central portions of said heads, there being centrally disposed openings through said heads and reinforcing plates, and journals secured to said heads, there being axially extending openings through said journals in communication with said openings through the heads and reinforcing plates for passing a heating medium through the shell, there being other openings in said heads along said inturned curved portions for receiving back pressure valves.

References Cited in the file of this patent UNITED STATES PATENTS 849,044 Brinker Apr. 2, 1907 1,640,662 Lutscher Aug. 30, 1927 2,366,801 Olson Ian. 9, 1945 FOREIGN PATENTS 3,269 Great Britain Dec. 2, 1901 7,785 Great Britain July 20, 1905 302,785 Great Britain Dec. 27, 1928 342,513 Great Britain Feb. 5, 1931

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