US168973A - Improvement in boilers for steam fire-engines - Google Patents
Improvement in boilers for steam fire-engines Download PDFInfo
- Publication number
- US168973A US168973A US168973DA US168973A US 168973 A US168973 A US 168973A US 168973D A US168973D A US 168973DA US 168973 A US168973 A US 168973A
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- United States
- Prior art keywords
- boilers
- tubes
- boiler
- engines
- improvement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000010276 construction Methods 0.000 description 6
- 241000906091 Lethrinus miniatus Species 0.000 description 2
- 241000234435 Lilium Species 0.000 description 2
- 241001182492 Nes Species 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 description 2
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B13/00—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body
- F22B13/02—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body mounted in fixed position with the boiler body disposed upright
- F22B13/023—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body mounted in fixed position with the boiler body disposed upright with auxiliary water tubes inside the fire-box, e.g. vertical tubes
- F22B13/026—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body mounted in fixed position with the boiler body disposed upright with auxiliary water tubes inside the fire-box, e.g. vertical tubes the tubes being in substantially horizontal arrangement
Definitions
- the object of the improvement is expeditin g the generation of steam, by variation in the form of construction, at the first light-ing of the fire under'boilers of steam tire-engines, the alteration decreasing the disproportion of water to heating-surface that occurs in boilers as heretofore constructed.
- Figure 1 is a vertical section of a boiler as improved, dotted lines indicating the form of an ordinary boiler as now constructed.
- Fig. 2 is a horizontal section of a boiler at the crownsheet of the tire-box.
- A is the tire-box; B, the crown-sheet.
- D indicates smoketubes; E, the upper tubesheet of the smoke-tubes.
- F shows technically-termed drop-tubes, they being 'suspended from the crown-sheet of the fire-box, their lower ends closed and having water admitted from the upper part of the boiler, at their upper ends, which open'through the crown-sheet from which they are suspended.
- the inner row of drop-tubes is outside the outer circle of smoke-tubes. rIhe lower part ofthe boiler is ordinarily circular.
- a square form would admit of an increased number of 1 drop-tubes, which, as there is a greater proportion of heating-surface to the Water than is the case With smoke-tubes, can but be an advantage; but as the same effect would follow an increased size of a circular lower part of the boiler is left to discretion.
- the dotted lilies show a body of water, Gr, around the outer circle of smoke-tubes, without the same proportion of heating-surface as between the smoke-tubes.
- the diameter of the lower part is larger than the upper half,y so as to have one or more rows of droptubes, with the inner roW just outside the inner circumference of the Lipper part of the boiler, with the two diameters joined at or near the water-line inthe boiler, leaving room for a large body of water at the circumference of the upper part of the boiler, between the open tops ot' the droptubes and the water-line in the upper part.
- the improvement is shown to contract the space in which the body of water Gr is lodged by bringing the offset down very near to the top ofthe drop-tubes. Heating-surface and water being more equalized, the result is a saving of time in getting up steam when the speedy doing so is an object of much importance.
Description
lf. N. DENNISSUN.
Boilers for Steam Fire-Eng i nes.
Patented Oct. 19, 1 875.
.Mllmkilllllul Ille aIlfllllllliliIlllllllllrllr/ NFETEHS, PHOTKLLITHOGRAPHER. WASHINGTON. D C.
UNITED STATES PATENT EETGEo JOHN N. DENNI'ssoN, oE NEWARK, NEW JERSEY.
lMPROVEMENT IN BOlLERS FOR STEAM FIRE-ENGINES.
Specification forming part of Letters Patent No. 168,973, dated October 19, 1875; application led December l0, 1674.
To all whom it may concern Be it known that I, JUHN N. DENNISSON, of the city of Newark, State of New Jersey, have invented certain Improvements in the Construct-ion of Boilers for Steam Fire-Engines, of which the following is a specification:
The object of the improvement is expeditin g the generation of steam, by variation in the form of construction, at the first light-ing of the fire under'boilers of steam tire-engines, the alteration decreasing the disproportion of water to heating-surface that occurs in boilers as heretofore constructed.
In the accompanying drawings, Figure 1 is a vertical section of a boiler as improved, dotted lines indicating the form of an ordinary boiler as now constructed. Fig. 2 is a horizontal section of a boiler at the crownsheet of the tire-box.
A is the tire-box; B, the crown-sheet. D indicates smoketubes; E, the upper tubesheet of the smoke-tubes. F shows technically-termed drop-tubes, they being 'suspended from the crown-sheet of the fire-box, their lower ends closed and having water admitted from the upper part of the boiler, at their upper ends, which open'through the crown-sheet from which they are suspended. The inner row of drop-tubes is outside the outer circle of smoke-tubes. rIhe lower part ofthe boiler is ordinarily circular. A square form would admit of an increased number of 1 drop-tubes, which, as there is a greater proportion of heating-surface to the Water than is the case With smoke-tubes, can but be an advantage; but as the same effect would follow an increased size of a circular lower part of the boiler is left to discretion. The dotted lilies show a body of water, Gr, around the outer circle of smoke-tubes, without the same proportion of heating-surface as between the smoke-tubes. In the present construct-ion of steam re-cngine boilers the diameter of the lower part is larger than the upper half,y so as to have one or more rows of droptubes, with the inner roW just outside the inner circumference of the Lipper part of the boiler, with the two diameters joined at or near the water-line inthe boiler, leaving room for a large body of water at the circumference of the upper part of the boiler, between the open tops ot' the droptubes and the water-line in the upper part.
The improvement is shown to contract the space in which the body of water Gr is lodged by bringing the offset down very near to the top ofthe drop-tubes. Heating-surface and water being more equalized, the result is a saving of time in getting up steam when the speedy doing so is an object of much importance.
I do not claim a boiler having an offset, nor do I claim a boiler having drop-tubes, asl am aware that such, when used separately, are
not neW.
What I claim is- The combination, in an upright boiler, baving tubes I), of the offset a land the drop-tubes F, whereby the water is displaced above the drop-tubes, thereby increasing the tire-surface in relation to the quantity of water in the boiler, as set forth.
Y J. N. DENNISSON.
Attest:
W. `M. GooDING, EDWARD CoLLvER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US168973A true US168973A (en) | 1875-10-19 |
Family
ID=2238382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US168973D Expired - Lifetime US168973A (en) | Improvement in boilers for steam fire-engines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US168973A (en) |
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- US US168973D patent/US168973A/en not_active Expired - Lifetime
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