US1235811A - Steam-boiler. - Google Patents

Description

HENRY D. KELLY, OF KANSAS CITY, MISSOURI.

STEAM-BOILER.

Application filed. June 8, 1914, Serial No. 843,662. Renewed May 13, 1916.

To all whom it may concern:

Be it known that I, HENRY D. KELLY, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Steam-Boilers, of which the following is a specification.

This invention relates to steam boilers, and my object is to produce simple, strong, durable, cheap and eflicient attachments, to be arranged within and near the bottom of the boiler and upon the upper end of a pipe for supplying the boiler with water, the purpose of the attachments being to minimize the danger of an explosion of the boiler by effecting a gradual transformation of the water supplied to the boiler into steam, as contemplated by my United States Patent for spray-header for boilers, numbered 1,087 ,242, dated February 17, 1914, my present object being to produce a more eflicient header than the patented one above referred to.

Another object is to rovide the boiler with a series of low partltions or riffles dividing the bottom of the boiler into a plurality of compartments adapted to be successively filled with water, the object of thus partitioning the bottom being to provide an additional element of safety against explosion by preventing the quick flow of water over the entire surface of the bottom of the boiler, the provision of the partitions or rifiles thus incidentally serving to gradually effect an increase in the volume and pressure of steam generated instead of a practically instantaneous increase in the volume and pressure of the steam as would occur if the water was permitted to instantly spread over the entire bottom of the boiler when first admitted thereto.

With the objects named in view the invention consists in certain novel and peculiar features of construction and organization as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to the accompanying drawing, in which:-

Figure 1, is a fragmentary perspective view of a boiler embodying the invention.

Fig. 2, is an enlarged central vertical section of a header embodying the invention.

Fig. 3, is a horizontal section on the line III-III of Fig. 2.

In the said drawing, 1 is a boiler of any suitable or preferred type, and secured upon Specification of Letters Patent.

Patented Aug. 7, 1917.

Serial No. 97,445.

the bottom of the same are the partitions or rittles 2, 3, 4, and 5 of gradually increasing height. 6 is a water supply pipe extending up through the bottom of the boiler and forming a water tight joint therewith, in any suitable manner.

7 is a cylindrical header which is closed at its top and is provided centrally with a pin 8 depending from its top to the plane of its lower end or bottom 9, which bottom is provided with a series of outlet openings 10 and with a tubular portion 11 projecting upwardly into the header and downwardly therefrom. The lower end of the tubular portion 11 is internally threaded and its bore is of greater diameter than the pin 8 which depends into the upper end of said bore and thus constricts the same, and from said point of constriction the internal diameter of the tubular portion increases to the upper end of said portion, and to give the header a constantly expanding passage, the combined capacity of outlet openings 10 is materially greater than the capacity for discharge, of the passage of the said tubular portion.

In practice the water, under city pressure or other pressure, is permitted to pass up through pipe 6 where it is impeded by the pin 8 and caused to travel upwardly, and even if the pressure in the pipe 6 is sulficient to cause the water to spurt up through portion 11 and impinge upon the top of the header, the size of the chamber of the latter will result in deadening the force of and causing the water to escape quietly through the openings 10 and flow down the pipe 6 to the bottom of the boiler.

Assuming that the boiler stands at a steam generating temperature, it will be apparent that the water flowing down the pipe 6 will at first be almost instantly converted into steam upon coming in contact with the bottom of the boiler and that as in the patent hereinbefore identified, this results in the gradual increase in the volume and pressure of steam generated and also in the successive filling with water of compartments formed by the rifiles. By compelling each compartment to be filled with water before any water can enter the next compartment, the rapidity of generation of steam will be somewhat retarded and the rise in pressure will consequently be gradual until all the compartments are filled, after which the riflles will of course be functionless.

series of chambers by rifiies rising difl erent distances from the bottom of the boiler, and means for supplying Water to the shallowest chamber formed by said rifiles.

In testimony whereof, I afliX my signa- 15 From the above description it Will be apparent that I have produced a steam boiler embodying the features of advantage enumerated as desirable and Which may be modified in minor particulars Without departing from the spirit and scope or sacrificin ture, in the presence of tWo Witnesses. any of the advantages of the appended HENRY D. KELLY. claim. I/Vitnesses I claim H. C. RODGERS, A boiler, partitioned at its bottom into a G. Y. THORPE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). O

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