US1265923A - Hot-blast stove. - Google Patents

Description

J. l. LARIMER HUT BLAST STOVE, APPLICATION FILED MAR. 6, I911- Patented May14, 191s.

- 2 SHEETSSHEET I- 1. LARIMER.

- HOT BLAST STOVE.

APPLICATION FILED MAR. 6. I917.

. Patented May14, 1918.

2 SHEETS-SHEET 2.

JAMES I. LARIMER, OF JOLIET, ILLINOIS.

HOT-BLAST STOVE.

To whom it may concern Be it known that I, JAMES I. LARIMER, acitizen of the United States, and resident of Joliet, in the county of Will and State of Illinois, have invented certain new and useful Improvements in Hot-Blast Stoves, of-

which the following is a specification.

My invention relates to hot blast stoves and has particular reference to the construction of such stoves at the upper end thereof. The improvement is adapted for use in connection with a stove such as disclosed in my co-pending application Serial #130,058,

filed November 7 1916.

In order to utilize to advantage a four pass stove of the type disclosed in my copending ap lication referred to, it is essential that suitable means should be provided for deflecting and changing the direction of the gases at the upper end of the stove. In a four pass stove this must be done twice and I have conceived of means whereby the desired result may be accomplished with the smallest possible loss in the matter of wear and abrasion of the bricks by the force of the traveling body .of ases and with the least loss of velocity. he desired results are secured by suitably curving and angularly disposing the walls to the end that the gases are not caused to be abruptly deflected, impingement against walls disposed at right angles to the flow of gases being avoided.

The desired results are secured in a four pa'ss stove by providing the usual dome which is utilized for changing the direction of the gases, locating in the dome a transverse vertical Wall which bisects the space within the dome and which serves to deflect the gases from the first to the second passes and from the third to the fourth passes. In other words the construction of the stove is such that a single transverse vertical wall is employed for deflecting the gases from the first to the second pass and from the third to the fourth pass. his greatly simplifies the building 0 erations, makes the change of direction 0 the gases less abrupt and is generally satisfactory.

The invention will be more readily understood by reference to the accompanying drawings in which Figure 1 is a transverse vertical section on the line 11-of Fig. 2 through a portion of a hot-blast stove constructed in accordance with my invention;

I Specification of Letters Patent.

Patented May 14, 191 8.

Application filed March 6, 1917. Serial No. 152,816.

Fig. 2 is a transverse sectional view on the line 2-2 of Fig. 1, and,

Fi 3 is a fragmentary sectional view on the hue 3-3 of Fig. 2.

Referring more particularly to the drawings it will be seen that the stove to which my invention is applied comprises an outer 'shell 10, a dome top 11, and the four passes,

12, 13, 14, 15. The first and fourth passes numbered, respectively, 12 and 15, are elliptical in cross-section and outlined by arcuate walls-16, 17, respectively, the endsof which engage the shell 10. Thesecond and third passes are separated by a central vertical wall 18, which connects the walls 16, 17, in line with the minor axes of the elliptical passes.

The wall which serves to bisect the space within the dome 11,is best shown in Fig. 2 and is composed of two parallel non-alined portions 19, 20, forming a wall somewhat zigzag in section, connected by a portion 21, which is in efi'ect a continuation of the connecting wall 18. Thus a single transverse wall separates the four passes. It will be noted that the walls 19, 20, are so disposed as not to abruptly deflect the gases. To this end it will be noted by reference to Fig. 3 that I have avoided sharp corners by removing bricks as at 22, and by filling in bricks at point 23. Thus there are no angular surfaces against which the gases impinge. This materially reduces wear and increases the life of the stove.

Obviously the exact form of the walls is made therein without departure from the spirit of my invention.

I claim:

1. In a hot blast stove, the combination of a plurality of passes, a dome at the upper extremity of the stove, and a wall intersecting the space within the dome, said wall being disposed at an oblique angle to the flo w of gases and adapted to deflect the same from one pass into the next pass, substantially as described.

2. In a multiple pass stove, the combination of a dome-shaped top and a zigzag shaped wallse' arating adjacent passes and adapted to de ect gases without an abrupt turn, substantially as described.

. 3. In a-hot-blast stove, the combination of a plurality of passes, a top at the upper extremity of the stove providing an open space above the passes, and a wall bisecting the space, said wall being disposed at an oblique angle with relation to the flow of gases and acting to direct the gases into an adjacent pass, substantially as described.

4. In a four-pass stove, the combination of curved walls 1 outlining the first and fourth passes on diametrically opposite sides of the stove, a short wall connecting said curved walls on substantially an axial plane and extending to the roof of the stove, and

walls above said passes extending to the roof and joined at one end to said axial wall,

substantially as described.

5. In a four-pass stove, the combination of walls defining a space above the passes and a deflecting wall substantially zi zag bisecting said space and providing inclined surfaces against which the gases are caused to impinge when being directed into an adjacent pass, substantially as described.

6. In a four-pass stove, the combination of an outside shell and a dome top, the space within the dome being utilized for changing the direction of the gases, the first and fourth passes being lo'cated on diametral opposite sides of the stove and defined by ary cuate walls which join said outside shell at their extremities, a transverse vertical wall uniting said arcuate walls and extending to the dome top, and walls also extendin to the -roof and joining said transverse W21 1, said last named walls acting to deflect the gases into adjacent passes, substantially as described.

7. In a four-passstove, the combination of an outside wall and a dome top, the space within the dome being utilized for changing State of Illinois, this 23rd day of February, 1917.

JAMES I. LARIMER. Witnesses:

WILLIAM J. Docon'rr, THOMAS J. SAMPSON.

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