US393781A - Jonathan j - Google Patents

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US393781A
US393781A US393781DA US393781A US 393781 A US393781 A US 393781A US 393781D A US393781D A US 393781DA US 393781 A US393781 A US 393781A
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fire
box
grate
steam
jonathan
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B1/00Combustion apparatus using only lump fuel
    • F23B1/16Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support
    • F23B1/24Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support using rotating grate

Definitions

  • My invention relates to an improvement in steam-boilers of that class which have an internal firebox.
  • the object of my improvement is to provide a grate for the fire-box in this class of steam-boilers which shall also form a part of the steam-generating surface.
  • Figure 1 represents a longitudinal section of a locomotive or portable boiler having my improvement.
  • Fig. 2 is a plan of the same at a, Fig. 1.
  • My improvement consists in forming a part of the bottom of the fire-box of a solid inclined surface formed by bending the back sheet of the fire-box forward and downward, and in forming the grate of tubes having their open ends inserted in the back sheet of the fire-box, the said tubes being arranged in the same horizontal plane, with open spaces between them, so as to form a grate-surface, whereby the fuel-support consists of a smooth inclined surface from which the coals and ashes will slide forward and a grate formed by the tubes and which forms a part of the water-space of the boiler, all as hereinafter 5 fully described.
  • the closed ends 6 of the tubes D extend nearly to the front wall of the fire-box, but are not secured thereto, the purpose being to avoid any pressure on the walls of the fire-box from the expansion of the gratebars.
  • the forward ends of the bars D may rest on a cross-bar, f, secured to the side walls of the fire-box.
  • the open ends of the tubes D are screwed into the back sheet of the fire-box, so that their interiors communicate with and form a part of the water-space which surrounds the firebox.
  • I claim as my invention In a steanrboiler, the combination of an internal fire-box having its back sheet inclined forward and downward and a series of ,tubes each having one end inserted in said back sheet of the fire-box below said inclined portion and arranged to form a grate for the fire- -boX, all substantially as and for the purpose specified.

Description

(No Model.) J. J. MOORE.
STEAM BOILER.
No. 393,781. Patented Dec. 4, 1888.
UNITED STATES PATENT OFFICE.
JONATHAN J. MOORE, OF THORNTOVVN, INDIANA.
STEAM-BOILER.
SPECIFICATION forming part of Letters Patent No. 393,781, dated December 4, 1888.
Application filed June 11, 1888. Serial No. 276,678. (No model.) I
To all whom it may concern.-
Be it known that I, JONATHAN J. MOORE, a citizen of the United States, residing at Thorntown, in the county of Boone and State of Indiana, have invented a new and useful Improvement in Steam-Boilers, of which the following is a specification.
My invention relates to an improvement in steam-boilers of that class which have an internal firebox.
The object of my improvement is to provide a grate for the fire-box in this class of steam-boilers which shall also form a part of the steam-generating surface.
The accompanying drawings illustrate my invention.
Figure 1 represents a longitudinal section of a locomotive or portable boiler having my improvement. Fig. 2 is a plan of the same at a, Fig. 1.
My improvement consists in forming a part of the bottom of the fire-box of a solid inclined surface formed by bending the back sheet of the fire-box forward and downward, and in forming the grate of tubes having their open ends inserted in the back sheet of the fire-box, the said tubes being arranged in the same horizontal plane, with open spaces between them, so as to form a grate-surface, whereby the fuel-support consists of a smooth inclined surface from which the coals and ashes will slide forward and a grate formed by the tubes and which forms a part of the water-space of the boiler, all as hereinafter 5 fully described.
bent forward at a sharp angle, as at c, immediately above the point where the tubular grate-bars D are inserted, thus forming a partial support for the fuel. The closed ends 6 of the tubes D extend nearly to the front wall of the fire-box, but are not secured thereto, the purpose being to avoid any pressure on the walls of the fire-box from the expansion of the gratebars. For greater security the forward ends of the bars D may rest on a cross-bar, f, secured to the side walls of the fire-box. The open ends of the tubes D are screwed into the back sheet of the fire-box, so that their interiors communicate with and form a part of the water-space which surrounds the firebox. By this construction all warping and twisting and burning of the grate-bars is avoided. A large proportion of heat which has heretofore been lost in the ash-pit is absorbed by the tubular grate-bars and the inclined portion of the back sheet which forms an extension of the grate and is utilized in the production of steam.
I claim as my invention In a steanrboiler, the combination of an internal fire-box having its back sheet inclined forward and downward and a series of ,tubes each having one end inserted in said back sheet of the fire-box below said inclined portion and arranged to form a grate for the fire- -boX, all substantially as and for the purpose specified. v
JONATHAN J. MOORE.
'itn esses:
WILLIAM A. MAsTERs, D. H. RAMMEL.
US393781D Jonathan j Expired - Lifetime US393781A (en)

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