US495977A - Steam boiler - Google PatentsSteam boiler Download PDF
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- US495977A US495977A US495977DA US495977A US 495977 A US495977 A US 495977A US 495977D A US495977D A US 495977DA US 495977 A US495977 A US 495977A
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- 206010022000 Influenza Diseases 0.000 description 1
- 230000003190 augmentative Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
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- 230000000875 corresponding Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B9/00—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body
- F22B9/10—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed substantially horizontally, e.g. at the side of the combustion chamber
- F22B9/12—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed substantially horizontally, e.g. at the side of the combustion chamber the fire tubes being in substantially horizontal arrangement
2 SheetsShet' 1. R. JOY.
Patented Apr. 25,1893.
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R. JOY. STLAM BOILER.
No. 495,977. Patented Apr. 25, 1893.
ERS co. PHDYO-LITND.,WASNINGTON u c UNITED STATES ROBERT JOY, OF OSWEGO, NEYV YORK, ASSIGNOR TO THOMSON KINGSFORD,
OF SAME PLACE.
SPECIFICATION forming part of Letters Patent No. 495,977, dated April 25, 1893.
Application filed January 31, 1 8 9 3 To all whom it may concern:
Be it known that I, ROBERT JOY, of Oswego, in the county of Oswego, in the State of New York, have invented new and useful Improvements in Steam-Boilers, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.
This invention relates to the class of return flue boilers in which the front end portion of the boiler-shell proper is of cylindrical form and the rear portion is vertically elongated and has the direct flues extending through it and connected to the fire-box formed directly under the cylindrical front portion of the shell. And the invention consists in a novel construction and combination of the component parts of the boiler-shell and fire box shell which latter is surrounded by a water leg and thus materially increases the heating surface of the boiler, as hereinafter more fully described and specifically set forth in the claim.
In the annexed drawings Figure 1 is a ver tical longitudinal section of a steam-boiler embodying my improvements. Fig. 2 is a vertical transverse section on line as, at, in Fig. 1. Fig. 3 is a perspective view of the component parts of the boiler shell proper. Fig. 4 is a detached perspective view of one of the inner side plates of the fire-box, and Fig. 5 is a detached perspective view of the direct flue-sheet which forms the inner rear wall of the fire-box.
Similar letters of reference indicate corresponding parts.
The boiler-shell proper I form of the cylindrical front portion -A and semi cylindrical rearward extension A'- which is a continuation of the upper half of the cylindrical portion as shown in Fig. 3 of the drawings, which also shows the section which forms the bottom and sides of the rear end portion of the boiler shell, and consists of the inverted semi-cylindrical bottom plate ]3- formed with the vertical extensions B'B at the top edges of which latter it is riveted to the bottom edges of the semi-cylindrical top portion ---A'.
To the front of the cylindrical portion A- is riveted the front flue sheet -P- which is $erial No. 460,411. (No model.)
vertically elongated and extends beneath the plane of the bottom of the rear portionB as shown in Fig. 10f the drawings. The rear flue-sheet -H is secured to the interior of the boiler shell a proper distance from the rear end thereof to form the smoke-boxL-. To the front end of the rear portion -B B B is riveted the vertical plate P- the bottom edge of which is on a level with the bottom of the front plate P. To opposite sides of the cylindrical front portion A are riveted the vertical side plates OO which extend directly and tangentially from said shell and terminate in the same plane with bottoms of the plates P-P. The said side plates together with the plate P- and lower portion of the plate P form the outer walls of the fire box R which is surrounded by a waterleg formed of the inner front plate D attached to the bottom portion of the cylindrical shell A- and arranged with a water space a between it and the front plate P. The inner rear plate E which constitutes the front direct flue sheet, is also attached to the bottom portion of the cylindrical shell A and arranged with the water space -a between it and the plate P'. The inner side-plates -FF are preferably bent inward at their upper ends as shown at bin Figs. 2 and 4 of the drawings so as to form small arches over the sides of the fire-box. Thelongitudinal edges of said bent or arched portions of the side plates are riveted to the under side of the cylindrical portion A which forms the crown sheet of the fire-box. Said inner side plates are also disposed with the water space --a between them and the outer side plates -O-O. The bottom edges of the described inner plates of the fire-box are all flanged outward and riveted to the bottom edges of the outer plates --PP and O-C.
The efficiency of the boiler may be augmented by the pipe I which is located in the smoke-box -L and taps the boiler head preferably between the direct fines cand return fiues dto avoid the entrance of sediments into said pipe. The pipe is extended in a tortuous course through the interior of the smoke-box and thence into the upper part of the boiler shell as shown in Fig. 1 of the drawings. The pipe forms an additlonal water space which is heated by the products of combustion entering the smokebox and impinging the pipe.
I Iaving described my invention, What I clalm as new, and desire to secure by Letters Patent, is'
Inareturn flue boiler of the class described, the combination with the cylindrical shell A formed with the semi cylindrical rearward top-extension A', the inverted semicylindrical bottom plate B formed with the vertical extensions B riveted to the bottom edges of the extension A'-, and the plates -PP' attached to said parts as shown, of the side-plates -CC attached directly tangentially to the sides of the cylindrical shell -A-, and thejfire box-shell formed of the front-plate D attached to the cylindrical shell --A- with the water space a between it and the plate -P-, the flue sheet E also attached to the aforesaid cylindrical shellwith the water space between said sheet and plate P-, and the side-plates FF-- attached to said cylin- ROBERT JOY. [L. s.]
EPHRAIM M. WILKINSON, B. W. BURLEIGH.
|Publication Number||Publication Date|
|US495977A true US495977A (en)||1893-04-25|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|US495977D Expired - Lifetime US495977A (en)||Steam boiler|
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- US US495977D patent/US495977A/en not_active Expired - Lifetime
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