US752630A - Water-tube boiler - Google Patents

Description

No. 752,630. PATENTBD PEB.16, 1904.

G. E. TURNER. WATER TUBE B'OILER.

IWITNESSES:

No. atacan.

, UNITED ySTATES batented February 16, 1904.

PATENT OFFICE.

GEORGE E. TURNER, OF BUCYRUS, OHIO, ASSIGNOR TO STIRLING COMPANY, OF CHICAGO, ILLINOIS.

WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent No. 752,630, dated February 16, 1904.

Application filed August 11, 1902. Serial No. 119,235. (No model.)

To a/ZZ whom/ it 17'1//1/,7/ concern:

Be it known that I, GEORGE E. TURNER, a citizen of .the United States, residing at Bueyrus, in the county of Crawford and State of Ohio, have invented certain new and useful Improvements in Water-Tube Boilers; and I do declare the following to be a clear, full, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

In the construction of water-tube steamboilers one of the familiar diiculties encountered is in providing effective connections between the water-tubes and the steam-drums and the mud-drums. It is found in practice that the drums are weakened by the numerous holes cut in their walls to receive the ends of the water-tubes, and that owing to the thinness of the walls of the drums at these points it is diicult to form a satisfactory joint by expanding the ends of the tubes in place. To meet this difficulty, many complicated and expensive devices have been resorted to, It has been .proposed by steam-boiler designers to thicken the metal of the drums at one side in a plane flat surface and to thus permit the use of straight tubes of uniform length; but in practice this has not been found feasible, for the reason that the drums are unduly weakened by a departure from the curved cross-section.

My invention relates to and its object is to provide cheap and simple means for overcoming the objection here indicated; also, to provide an arrangement of steam-drums, muddrums, and water-tubes which will furnish a simple, effective, and durable, as well as an economical and convenient, water-tube steamboiler. I attain these objects by means of the devices, construction, and arrangement of parts hereinafter described, and shown and illustrated in the single ligure of the accompanying drawing, which is a vertical longitudinal sectional elevation of my boiler.

In the drawing, l and 2 are a pair of steam and water drums, the drum 1 being hereinafter designated as the front.upper drum and 2 as the rear upper drum.

3 and 4. are mud-drums disposed below the drums 1 and 2. 3 will be hereinafter designated as the front mud-drum and 4: as the rear mud-drum.

The front upper drum and the front muddrum are connected by a series or bank of tubes 5. The rear upper drum and the'rear mud-drum are connected by a series or bank ,of tubes 6. The rear upper drum and the front mud-drum are connected by a series or bank of tubes 7. The steam-spaces of the two upper drums are connected by steam-pipes 8,

andthe water-spaces of these two drums are connected by water-pipes 9. The two muddrums are not directly connected with each other. This boiler thus arranged is provided with the usual feed water and steam pipes, steam-gages, and the like and is mounted after the usual manner of this class of boilers in settings of masonry. The furnace' is in front of the front bank of tubes 5, near its bottom. At the rear of the bank of tubes 5, extending from the front mud drum upwardly nearly to the front upper drum, is a baffle-plate 10, which is interposed between the banks of tubes 5 and 7. Another baiiieplate l1 extends downwardly from the rear upperdrum nearly to the rear mud-drum.

The course of the heated gases from the furnace is upwardly in front of the baiiie-plate 10, thence downwardly between the baffleplates 10 and 1l', thence upwardly in the rear of baffle-plate 11, and out through the stack. The general circulation of the water in my boiler is as follows: From the front mud-drum up through tubes 5 to the front upper drum, thence through tubes 9 to the rear upper drum, thence down through tubes 7 to the front muddrum. In addition to this circulation there are secondary and independent currents up and down in the tubes 6 between the rear upper drum and the rear mud-drum.

The walls of the portions of the drums which receive the ends of the water-tubes are thickened longitudinally to a greater thickness than the remainder of the drum. The interior and exterior surfaces of the thickened portionsi are curved in the direction of the circumference of the drums. It will be seen that the access of metal in the walls of the drumswhere numerous holes are bored to receivethe tubes greatly strengthens the drums at this point, provides for greater area of contact, and insures a stronger and tighter joint than is obtainable with thinner metal.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. A water-tube boiler comprising two elevated Steam and water drums, a pipe connecting the steam-spaces of the two elevated steam and water drums, a pipe conneeting thewaterspaces of the two elevated steam and water drums, two lower mud-drums, a series of tubes connecting the front lower mud-drum with the front elevated steam and water drum, a series of tubes connecting the rear lower mud-drum with the rear elevated steam and water drum, and a row of tubes connecting the front lower mud-drum with the rear elevated steam and water drum, substantially as described.

2. A water-tube boiler comprising two elevated steam and waten drums, a pipe connecting the steam-spaces of the two elevated steam and water drums, a pipe connecting the waterspaces of the two elevated steam and water drums, two lower mud-drums, a series of tubes connecting the front lower mud-drum with the front elevated steam and water drum, a series of tubes connecting the rear lower mud-drum with the rear elevated steam and water drum, a row of tubes connecting the front lower muddrum with the rear elevated steam and water drum, and a row of tubes connecting the lower mud-drum and the rear elevated steam and water drum, substantially as described.

3. A water-tube'boiler comprising, two elevated steam and water drums, a pipe connecting the steam-spaces of the two elevated steam and water drums, a pipe connecting the waterspaces of the two elevated steamoand water drums, two lower mud-drums, a series of tubes connecting the front lower mud-drum with the front elevated steam and water drum.l a series of tubes connecting' the rear lower muddrum with the rear elevated steam and water drum, a row of tubes connecting the front lower mud-drum with the rear elevated steam and water drum, and a baffle-plate located between the series of tubes connecting the front lower mud-drum and the front elevated steam and water drum and the row of tubes connect- ,ing the front lower mud-drum with the rear elevated steam and water drum and extending upwardly from the front lower mud-drum, substantially as described.

4. A water-tube boiler comprising two elevated steam and water drums, a pipe connecting the steam-spaces of the two elevated steam and water drums, a pipe connecting the waterspaces of the two elevated steam and water drums, two lower mud-drums, a series of tubes connecting the front lower mud-drum with the front elevated steam and water drum, a series of tubes connecting the rear lower muddrum with the rear elevated Steam and water drum, a row of tubes connecting the front lower mud-drum with the rear elevated steam and water drum, a row of tubes connecting the lower mud-drum and the rear elevated steam and water drum, and a baffle-plate between the series oi' tubes and the row of tubes connecting the rear lower mud-drum with the rear elevated steam and water drum and depending from the rear elevated steam and water drum, substantially as described.

5. A water-tube boiler comprising two elevated steam and water drums, a pipe connecting the steam-spaces of the two elevated steam and water drums, a pipe connecting the waterspaces of the two elevated steam and water drums, two lower mud-drums, a series of tubes connecting the front lower mud-drum with the front elevated steam and water drum, a series of tubes connecting the rear lower muddrum with the rear elevated steam and water drum, a row of tubes connecting the front lower mud-drum with the rear elevated steam and water drum, a row of tubes connecting the lower mud-drum and the rear elevated steam and. water drum, a baffle-plate between the series of tubes connecting the front lower mud-drum with the front elevated steam and water drum and the row of tubes connecting the front lower mud-drum with the rear elevated steam and water drum, and extending upwardly from the front lower mud-drum, and a battle-plate between the series oi' tubes and the'row of tubes connecting the rear lower mud-drum and the rear elevated steam and water drum and extending downwardly from the rear elevated steam and water drum, substantially as described.

GEC). E. TURNER.

In presence of- THOMAS BEER, O. E. MONNETTE.

IOO

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