US1306675A - Sectional boiler - Google Patents

Description

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Patented June 10, 1919.

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WILLIAM M. MACKAY, or EAs'r ORANGE, NEW JERSEY.

sEo'rIoNAL EOILEE.

Specification of Letters Patent. Patnted unie 10, 1919,

Application filed August 3, 1917 d Serial No.1184,223. l

To all whom t may concern Beit known that I, WILLIAM M. MAGKAY, a citizen of the United States, residing at 73 Warrington Place, East Orange, county of Essex, and State of New Jersey, have invented certain new and Iuseful Improvements in Sectional Boilers, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to a boiler having a base containing an ash-pit section and provided with a grate upon the top, the boiler being formed of sections which form a central magazine with water-space surrounding the sides and top of the same, with a water-leg surrounding the firebox, anda shoulder extended from the bottom of the magazine to the water-leg parallel with the grate, a combustion-chamber above the magazine, fire-tubes extended through the waterspace around the magazine from the shoulder to the combustion-chamber, a smokeehamber adjacent to such combustion-chamber, and a deflector between the two cham:

bers with an opening for the indirect movement of the gases from the lire-tubes' through the combustion-chamber to the smoke-chamber.

These features are obtained by making the firebox section to extend above the top of the magazine and recessed in said top to form the lower part of the oombustionchamber; by making the deflector-section with'reeess upon its under side forming the upper part of the combustion-chamber and a recess upon its upper side forming the lower part of the smoke-chamber, and a dome-section with recess Yupon its lower side to form the upper part of the smoke-chamber. The deflector-section is .formed with a water-plate with notch inV one edge through which the smoke passes from the combustion-chamber to the smoke-chamber, and an opening is extended to the outside of the boiler from the combustion-chamber and from the smoke-chamber below and above Athis notch so that a door applied to the said opening overlaps the sections above and below theopening, and gives full aecesslto both these chambers for cleaning out the same.

The shallowness of the recessesV facilitates the casting of the sections.

fire-tubes,

The fuel may be burned with either an upward or downward draft, as lthe'upwar'd draft 1s produced by closing the bevel-flap on the door of the magazine and opening `the bevel-Hap on the door in the ash-pit, so that air passes upward through thel grate and the products of combustion move wholly -upward through the fire-tubes.

Upon the contrary, the closing of the ash-- pit bevel-door and the opening of the magazineV bevel-door -causesthe draft Vto move downwardly through the fuel in the magazine and thenV upward through the fire-tubes without passing through the grate.

The invention will bev understoodbyV reference to the annexed drawing, in which Figure 1 is a vertical section taken at the center line of Fig. 2; Fig. 2 is a vertical section taken at the center line of Fig. l

with the top section formed as :a steamdome; Fig. 3 is aplan of the flrebox section of Fig. l; Fig. 4L is a plan of the middle or deflector section, of Fig. l;v and Fig. 5 is a plan of a firebox of alternative shape.

The boiler is shown formed with' an ashpit section, a fire-box section A, a defiector section B Vand a dome section C.

The fire-box section is set-upon a base D having a grate E and an ash-door E', and this section, as shown'in Fig. 3, has a circular magazine G from which a doorway E2 extends to the outer side of the section.

A horizontal shoulder j is shown extended from the bottom of the magazine to an antween the wall of the magazine andthe outer shell of the section, as shown in Fig. 3. A combustion-chamber f is formed in the top of thesection A', as shown in Fig. 3, over themagazine and over the tops of the with which it has open connection. 1 Y

The deliector section B vis formed, as shown in Figs. 2 andgl, of a water-plate or disk having a Vsmoke-chamber h2 in the top, and a notch B2 eut out of one edge, as

shown in Fig. 2, to permit the passage of the gases from the combustion-chamber. f to the smoke-chamber it?. v

The notchis so arranged as to drive the gases from 'the rear to the front portion of the defle'ctor section, thus retaining them longer in the combustion-chamber to fully complete their combustion.

A damper-box r is attached to the `outlet m of the smoke-chamber, and is provided'on the top of a collar for the smoke-pipe s2 and aft the outer end with a hinged checkdamper t.

An auxiliary or throttling damper a is hinged with-in the boX 4adjacent to the outlet fm .and proportioned to close about threequarters orf fthe passage in the Idamper-box when this ydamper is drawn across said passage.

The two damgpe'rs :are lconnected by va link o which hol-ds the `dar-nper u 'entirely open when the damper t is closed, and when the cheek-damper Yis open, Ethe Vlink 'draws the damper u across 4the passage, and thus Vgreatly checks the escape oi` gases, while it .permits la sullici'ent'escape to prevent back- Vdraft :oit suclrgases from the furnace.

The doors E :and E2 have hinged flaps (Z4 faynd d5 -to admit air when desired; and 'when 'the air 1is admitted ca-t the ash-door and the 4fuel-doorM is closed, the draft is upward vthrough the 'grate-g but when vthe umagazine is nearly 'filledfwith uel :and the ash-door wholly closed, theflap on the -door E2 may be Iopened more or less, and the drafft passed 4downward `through coal in the magazine 'to the 'tire-tubes.

1n Figs. l and '2, a drop-llange s is shown vlenteiided 'down-ward -i-rom the inner corner' of the shoulder j, to Aguard the bottoms Voli the fire-tubes v'from any crowding kof coal into'the tubes.

With this 'iconstructiom the coal 4flowing down from the magazine slaiits laterally downward from the flange, and forms an annular combu'stionlspace lat the bottoms of lthe fire-tubes, which lgreatly promotes the vcombustion of the fuel, while it wholly ,prevents any obstruction lof the tire-tubes by the coal.

rPhe construction furnishes a x very free land iunobstructed V.passage for the water,

Afrom the 4inlet -at the lwater-leg around the tire-.space tothe outlet at the top, and thus 'secures the free circlulation 'that is desired in such sa boiler.

ln practice, itheoutsides of all the 'sections farecoated .or clothed 4with .asbestos for other non-heat 4conducting jacket, but this is Vnot shown inthe drawing, as it would obscure theactual construction, and forms no part ofgthe ,present invention. 4

'lhefireboir section shownin Fig. is of rectangular orm Aand exactly of the same vdiameter as that shown in Fig. 3, but has a greater periphery and .a Irgreater area, while it occupies in practice no more room or-ioorspace than the circular lireboX. It thus affords room for more tire-tubes, and permits the spacing of such tubes farther apart to secure a freer circulation of water. I have therefore claimed the Yrectangular form on account of its advantages.

l claiml. A steam or hot-water boiler formed of four sections with horizontal oints, comprisprising a base with grate thereon, a hrebox section having a central magazine with water-space surrounding the sides and top of the saine 'and having the lower part of the combustion-chamber recessed in the top of the section, a water-leg'extended downward below the bottom of the magazine, fire-tarbes extended through the water-space' from the said hre-box upwardly into the vcombustionchamber, a dellector-section formed of a kwater-.plate recessed upon the under side to form the upper part of the combustionvchamber and having a notch in one edge for fthe upward passage ,of the gases, :the periphery of the notch being entirely surrounded by space iilled with water to absorb heat from the gases passing throudh such notch, and a. dome-section tted to t e top of the del'ector-section with their ad- .jacent surfaces recessed Vto form a smokechamber, and .a smoke-outlet extending from .such chamber through the wall oi the section. l 2. A :steam or hot-water boiler formed of four sections with horizontal joints, comprising .a ybase with grate thereon, a VirehoX section having a central 'inagazine with water-space surrounding the sides yand top of the same and having a combustion-chamber-recessed in the top of the section, watertubes extending through vthe water-space around the magazine from the fireboxv'into the combustion-chamber, a .deflector-.section -forined of a water-plate having a .recess in its under side forming the 1top of the ycombustion-chamber and a recess in its uppers-ide forini-n-g Vthe bottom of the .snioke-chamber,

yand having la .notch in onev edge for the .upward passage of lthe gases, and a dome-section fitted `to fthe-top .of thecleliector-section 'and having ya recess y upon its under side forming the top of the smoke-chamber, a

cleaning opening yextended laterally from' ythe combustion-chamber and smoke-.chaint:ber rto the full depth of 4the saine, yand a fuel-space extended upwardly therefrom, a tion having a doorway and door connected shoulder extended horizontally around the with the fuel-space in the bottom of the sec- 10 bottom of the magazine to the water-leg, a tion, and a doorway and door connected with combustion-chamber above the top of such the magazine near the top of the section. magazine and a Straight row of tubes upon In testimony whereof I have hereunto set each of three sides of the Section extended my hand.

upwardly from the shoulder to the said combustion-chamber, the fourth Side of the sec- WILLIAM M. MACKAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. c.

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