US553076A - Fire-door opening for water fire-boxes - Google Patents

Description

(No Model.) 2 sheets-sheet 1j J. RONBY. i

PIRE DOOR OPENING FOR WATER FIRE BOXES.

N0.'553,076. n Patented Jau. 14, 1896.

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-(No Model.) J. HONEY.

FIRE DGOR GPBNING POR WATER PIRB`BOXBS. No. 553,076. Patented Jan. 14, 1896.

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Wmesa Y Nm @tkm UNITED STATES PATENT OFETCE.

JOHN HONEY, O BOSTON, ASSIGNOR TO JOI-IN Gr. MORRISON, OF OAM- BRIDGE, MASSACHUSETTS.

FIRE-DOOR OPENING` FOR WATER FlRE-BOXES.

SPECIFICATION forming part of Letters Patent No. 553,076, dated January 14, 1896.

Application filed July 22, 1895. Serial No. 556,726. (No model.)

To @ZZ whom, t may concern:

Be it known that I, JOHN RONEY, a citizen of the United States,vresiding at Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Fire- Door Opening for W'ater FireBoXes, of which the following is a specification.

My invention relates to fire-doors for boilers; and it consists of certain new and useful constructions and combinations of the saine, substantially as hereinafter described and claimed.

In the accompanying drawings, Figure l is a front elevation of the lower portion of an upright boiler containing my invention. Fig. 2 is a horizontal section of the tire-door opening on the line rca/of Fig. l. Fig. 3 is a front elevation of the same.

The boiler shown is of the usual type, with shell-plate l, fire-box plate 2, (shown dotted,) and supporting east ash-pit 3, with ash-doors i 4. Heretoi'ore the fire box and shell-plates have been cut out for the rire-door opening and the door-frame has been inserted between them and riveted through. This construction is open to the grave objection that it eX- poses the fire-box plate to cold drafts at the very place Where it is least protected by the Water. The sudden consequent expansion and contraction cause cracks that leak and cannot be satisfactorily repaired. My con struction obviates allthis difliculty. I flange both the fire-box plate 5 and the shell-plate (3 clear out, and lap and secure together by rivets 7 7. I then t in the fire-door frame 8, which has an annular groove to receive and protect the flanged and riveted edges of the said plates, and which is held in place (at the same time without weakening the plates) by a number of set-screws 9 9. This frame is provided with the usual hinges l0 and latch 1l for a common door, (not showin) and projects far enough into the fire-box thoroughly to protect the angle of the fire-box plate from injury from the poker or otherwise. Thus the fire-door opening is surrounded and protected by Water, and there are no seams or rivets inside the fire-box around the fire door.

I claim as new and of my inventionl. In a Water fire box, the inner and Outer Walls thereof flanged and secured together to form the fire door opening, and a door frame having a recess adapted to receive said flanges, substantially as specified.

2. In a Water fire box, the inner and outer Walls thereof iianged and secured together to form the re door opening, and a door frame having an annular recess of the same contour as the flanged opening and adapted to receive the same, and means for securing said frame to said ilanges, substantially as specified.

In a Water fire box, the inner and outer Walls thereof flanged in one direction and secured together to form a iire door opening, a

.door frame adapted to fit said flanged opening, and set screws for securing said frame and flanges, substantially as specified.

4. In a Water lire boX, the inner and outer Walls thereof flanged in one direction and secured together at their flanged ends to form a fire door opening, a door frame provided with an annular groove or recess adapted to it over the flanges, and set screws adapted to secure said frame to the fianges, substantially as specified.

JOHN RONEY,

Witnesses:

MARY G. CoNDoN, LEPINE HALL Rien.

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