US133881A

US133881A - Improvement in blow-offs for steam-boilers

Info

Publication number: US133881A
Authority: US
Publication date: 1872-12-10
Anticipated expiration: 1889-12-10

Description

B. C. NYE

Blow-Off for Steam-Boilers.

Patented De c.10,1872.

, 4M. PHUrmL/THMRAPHIC C0.MX(0SBORNE'S Prracrss) UNITED I STATES PATENT OFFICE.

BUGKINGHAM o. NYE, OF POMEROY, OHIO, AssIeEoE .ro HIMSELF Ann JAMES N. WILLIAMSON, OF SAME PLACE.

IMPROVEMENT IN BLOW-OFFS FOR STEAM-BOILERS.

Specification forming part of Letters Patent No. 133,881., dated December 10, 1872.

" To all whom it may concern:

Be it known that I, BUGKINGHAM G. N YE,

, of Pomeroy, in the county of Meigs and State of Ohio, have invented a Blow-O11 for Steam- Boilers, of which the following is a specification:

The invention relates to that part of a boiler which is immediately above the fire, which is accustomed to become covered with scale and sediment, and which is thereby rendered liable to rapid oxidation, to diminution in strength, and to the production of explo- B ODS:

' The usual construction of a horizontal blowoh pipe is to form perforations in the bottom or under side, and connect. it with a vertical or other discharge-pipeat one of its ends. The disadvantages of this'plan are, chiefly, the liability of the perforations to become clogged and the short distance from the dischargepipe proper'forwhiehtlle sediment or scale is affected. 3

My invention has forits object torcmedy the defects of such construction.

Figure lis a longitudinal section. Fig. 2 is afront view. Y

A represents a boiler; B, the fire-space; O, return-fines; and D, that part of boiler where the collection of scale and sediment is liable to'promote oxidation and explosion. E E are two pipes, closed at one end, externally threaded at the other, and each having a slot, e, nearly its full length. These are screwed into a T-pipe, F, so that the slots 0 0 shall be in line with a bottom slot, f, of the said T-pipe.

G is a pipe having a shut-off cock, g, connecting with the T-pipe at g, and'extending to some point outside the boiler, where it discharges. When the cock gis turned oifno egress is allowed to the water, but when turned on the pressure of the steam upon the water forces a current thereof up through each aperture or the bottom of pipes.

Itis evident that the continuous slots e ofi'er no obstruction upon or around which mud'or other sediment can collect so as to clog or in anyway impede the passage of the water through the pipes E. It is equally apparent that there is no danger of clogging at the junction of said pipes with the pipe'F, owing to the force of the current at that point at 'each discharge. Observation and reflection are alike confirmatory of the fact that the influence of the current which can be induced at anytime through a vertical discharge-pipe, must be within a very short radius. Hence extension of the horizontal perforated pipe beyond such radius must be useless. In my invention I have connected the vertical discharge-pipe at the center of the. horizontal slotted pipe, so that the radius of the circle in which an upward current can be established is, theoretically, doubled, and nearly so in' practice; but to facilitate the action of a current is the function of the continuous slots, since the sediment, once carried upward into the pipes E, will travel along in the same till forced up into the vertical discharge-pipe G.

If a series of perforations were used instead,

each would form the center of a vortex which would disturb the sediment within its own range only; thus a series of vortices would be established,efi'ectin g a considerable commotion or distuibance in the water, but not causing a uniform action--i. 0., broad, unbroken latefal-currents-as in the case of the continuous s ots.

Therefore, while disclaiming, as foreign to my invention, the use of perforated pipes,

I do claim as new, and an improvement in blowpfis for steam-boilers The horizontal pipes E provided with the continuous slots 6 e, in combination with the pipe F f and vertical discharge-pipe G, said parts being connected so as-to form an equalarmed T, as shown and described, for the purpose specified.

' BUGKINGHAM O. NYE.

Witnesses DEL. F. STONE, WILLIAM L. ANDERSON.