US1607377A - Method of forming inside-boiler-wrapper sheets - Google Patents

Method of forming inside-boiler-wrapper sheets Download PDF

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Publication number
US1607377A
US1607377A US49045A US4904525A US1607377A US 1607377 A US1607377 A US 1607377A US 49045 A US49045 A US 49045A US 4904525 A US4904525 A US 4904525A US 1607377 A US1607377 A US 1607377A
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United States
Prior art keywords
sheet
boiler
sheets
welded
wrapper
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Expired - Lifetime
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US49045A
Inventor
Howard M Wolf
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BRODERICK Co
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BRODERICK Co
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Publication date
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Priority to US49045A priority Critical patent/US1607377A/en
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Publication of US1607377A publication Critical patent/US1607377A/en
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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49387—Boiler making

Definitions

  • the invention relates to return tubular boilers and has for its object to produce an inside wrapper sheet comprising a crown sheet and sides or leg elements the rear ends of which extend above the crown sheet, without employing riveted oints and without making in the blank any bends that must again be straightened.
  • Fig. 1 is a vertical longitudinal section
  • Figs. 2 and 3 are transverse sectional views on lines 2-2 and 3-3 of Fig. 1, respectively
  • Fig. 4 is a view of a sheet used in forming a certain portion 'ofthe boiler
  • Fig. 5 is the same sheet after a portion has been cut out
  • Fig. 6 is the same sheet after it has been bent into the necessary shape.
  • the boiler is of the horizontal return tubular type. It has an upper more or less cylindrical body portion from which extend downwardly lateral and end water legs enclosing a furnace space.
  • the body portion is provided with fire tubes, some of which carry the hot gases forward into the front smokebox, the others carrying it from this smokebox back to a rearsmokebox.
  • an outer or main sheet 1 which, as will be seen particularly from Figs. 2 and 3, is of an inverted U-shape.
  • the middle portion of this sheet forms the upper part of the cylindrical body and the straight downwardly extending portions form the outside of the lateral water legs.
  • the inner wall or wrapper sheet of the boiler is formed of a second sheet 2 which also has a generally inverted U-shape except that the upper part is given a reverse downward curve as clearly shown at 3 in Figs. 2 and 3.
  • the straight downwardly extending parts are parallel to the corresponding parts spaced from them.
  • the bottom of the water legs so formed is closed by portions H of the sheets 2 which are bent outwardly to meet the lower extremities of thesheet 1. They are welded to these sheets along the lines 5-5.
  • the upper rear part of the inner wrapper This sheet has a straight lower portion and a curved upper portion.
  • the straight portion is spaced from the parallel sheet 13, which closes the rear end of sheet 1 and which is welded to it along line 11*.
  • a rear flue sheet is welded to the rear edge of the cut-out portion of sheet 2, and
  • Flues 23 extend from sheet 10 forward we to sheet 16, being rolled or otherwise secured to said two sheets. Flues 24 connect the front sheet 16 to the rear sheet 13, being likewise secured to these two sheets by rolling or any other desired method.
  • a front smokebox 25 is secured to sheet 16 in such manner as to cover the forward openings of the fines 23 and 24, and a rear smokebox 26 is secured to rear sheet 13 over the rear ends of fines 24.
  • the smokebox 26 has an opening 28 for connection to the stack.
  • the flat legs around the four sides of the fire box are stayed at intervals by means of the stays 2626.
  • stays 27 connect the flat portion of sheet 1 as shown.
  • the boiler may be used for merely heating water or for the generation of steam, as desired. The necessary connections for introducing water and for taking off the steam orthe heated water will of course be provided.
  • the sheetQ is cut from a rectangular sheet of the necessary dimensions A and B, as illustrated in Fig. 4. From this sheet a portion is cut out as indicated at C in Fig. '5. The sheet is then bent so that the portion E assumes the shape shown in Fig. 6 and the vertical side portions assume parallel positions as illustrated, the curves at DD being gradually rounding ones.
  • the bottom portions'44 are turned outwardly at right angles, the small sheets that form the sides of the upper aux iliary combustion chamber are then welded to the upper edges of the vertical side portions, just in rear of the crown sheet.
  • the method of forming an inside wrapper sheet for a boiler which consists. in cutting out of a fiat sheet one end of a central panel extending along one of the main axes of the sheet, bending the flat sheet to shape the remaining'portion of said panel into a curved crown sheet andthe side portions of the sheet into parallel legs extending'beyond one end of the crown sheet, and welding a plate to the top edge of each of the leg extensions to increase the efiectire heights of such extensions HOWARD M. WOLF.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tents Or Canopies (AREA)

Description

Nov 16 1926.
H. M. WOLF METHOD OF FORMING INSIDE BOiLER WRAPPER SHEETS 2 Sheets-Sheet 1" Filed August 8 1325 Mr INVENTOR.
ATTORNEY.
-Nov;, 16, 1926. 1,607,377
H.' M. WOLF METHOD FORMI NG INSIDE BOILER WRAPPER SHEETS Filed August 8, 1925 2 Sheets-Sheet 2 4 /%wara/ NVEN TOR.
A TTORNEY.
q of sheet 1 and Patented Nov. 16, 1926.
warren STATES PATENT orFicE.
HOVJARB M. VJOLF, OF MUNCIE, INDIANA, ASSIGN OR TO THE BRODERICK CGMPA'NY, A
CORPORATION OF INDIANA.
METHOD OF FORMING INSIDE-BOTLER-WRAPPER SHEETS.
Application filed. August 8, 1925. Serial No. 49,045.
The invention relates to return tubular boilers and has for its object to produce an inside wrapper sheet comprising a crown sheet and sides or leg elements the rear ends of which extend above the crown sheet, without employing riveted oints and without making in the blank any bends that must again be straightened.
The invention is illustrated in the accompanying drawing in which Fig. 1 is a vertical longitudinal section; Figs. 2 and 3 are transverse sectional views on lines 2-2 and 3-3 of Fig. 1, respectively; Fig. 4 is a view of a sheet used in forming a certain portion 'ofthe boiler; Fig. 5 is the same sheet after a portion has been cut out; and Fig. 6 is the same sheet after it has been bent into the necessary shape.
The boiler is of the horizontal return tubular type. It has an upper more or less cylindrical body portion from which extend downwardly lateral and end water legs enclosing a furnace space. The body portion is provided with fire tubes, some of which carry the hot gases forward into the front smokebox, the others carrying it from this smokebox back to a rearsmokebox.
The entire boiler illustrated in the drawings is, with the exception of the front and rear smokeboxes, to all intents and purposes a single unitary structure of uniform thickness throughout and without any riveted or caulked joints.
To provide such a structure I use an outer or main sheet 1, which, as will be seen particularly from Figs. 2 and 3, is of an inverted U-shape. The middle portion of this sheet forms the upper part of the cylindrical body and the straight downwardly extending portions form the outside of the lateral water legs.
The inner wall or wrapper sheet of the boiler is formed of a second sheet 2 which also has a generally inverted U-shape except that the upper part is given a reverse downward curve as clearly shown at 3 in Figs. 2 and 3. The straight downwardly extending parts are parallel to the corresponding parts spaced from them. The bottom of the water legs so formed is closed by portions H of the sheets 2 which are bent outwardly to meet the lower extremities of thesheet 1. They are welded to these sheets along the lines 5-5. p
The upper rear part of the inner wrapper This sheet has a straight lower portion and a curved upper portion. The straight portion is spaced from the parallel sheet 13, which closes the rear end of sheet 1 and which is welded to it along line 11*. The
bottom of the rear water leg thus formed is closed by a bent-over portion 14 of sheet 12, which is welded to 13 along the line 15.
A rear flue sheet is welded to the rear edge of the cut-out portion of sheet 2, and
to the front edges of sheets 77 and 12. It
is welded to the latter along line 11, and to the sheet 2 along the line 11 The front end of sheet 1 is closed by a sheet 16 welded to sheet 1 along the line 17. A sheet 18 parallel to 16 and spaced from it closes the front of sheet 2, being welded to it along the line 19. 'This lower portion 20 is bent forward to close the lower end of the water leg, being welded to sheet 16 along the line 21.
Through the front water leg extends the short oval thimble 22, forming an opening for firing the boiler, its ends being welded to the edges of the holes in the two sheets.
Flues 23 extend from sheet 10 forward we to sheet 16, being rolled or otherwise secured to said two sheets. Flues 24 connect the front sheet 16 to the rear sheet 13, being likewise secured to these two sheets by rolling or any other desired method. A front smokebox 25 is secured to sheet 16 in such manner as to cover the forward openings of the fines 23 and 24, and a rear smokebox 26 is secured to rear sheet 13 over the rear ends of fines 24. The smokebox 26 has an opening 28 for connection to the stack.
The flat legs around the four sides of the fire box are stayed at intervals by means of the stays 2626. In addition stays 27 connect the flat portion of sheet 1 as shown. The boiler may be used for merely heating water or for the generation of steam, as desired. The necessary connections for introducing water and for taking off the steam orthe heated water will of course be provided.
The products of combustion travel forward through flues 23 and then backward through flues 24: into smokebox 26, from which they escape through the stack to the connection 28.
In cutting or shaping the parts for the construction of this boiler the preparation of outer sheet 1 needs no particular mention or description. The sheetQ is cut from a rectangular sheet of the necessary dimensions A and B, as illustrated in Fig. 4. From this sheet a portion is cut out as indicated at C in Fig. '5. The sheet is then bent so that the portion E assumes the shape shown in Fig. 6 and the vertical side portions assume parallel positions as illustrated, the curves at DD being gradually rounding ones. The bottom portions'44 are turned outwardly at right angles, the small sheets that form the sides of the upper aux iliary combustion chamber are then welded to the upper edges of the vertical side portions, just in rear of the crown sheet. It
will thus be seen that no part of this completed inside wrapper sheet is required to be bent and then again straightened or flattened in the process of producing the sheet.
The remaining sheets are of such simple form that they need no further description.
he whole structure is assembled and the abutting edges welded by autogenous or other preferred means.
hat I claim is:
The method of forming an inside wrapper sheet for a boiler, which consists. in cutting out of a fiat sheet one end of a central panel extending along one of the main axes of the sheet, bending the flat sheet to shape the remaining'portion of said panel into a curved crown sheet andthe side portions of the sheet into parallel legs extending'beyond one end of the crown sheet, and welding a plate to the top edge of each of the leg extensions to increase the efiectire heights of such extensions HOWARD M. WOLF.
US49045A 1925-08-08 1925-08-08 Method of forming inside-boiler-wrapper sheets Expired - Lifetime US1607377A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483091A (en) * 1945-04-05 1949-09-27 Locomotive Firebox Co Method of making thermic siphons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483091A (en) * 1945-04-05 1949-09-27 Locomotive Firebox Co Method of making thermic siphons

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