US414911A

US414911A - John m

Info

Publication number: US414911A
Authority: US
Publication date: 1889-11-12
Anticipated expiration: 1906-11-12

Description

(No Model.)

J. M. LAGI- ILAN.

STEAM BOILER.

ATTORNEYS.

NIPEYERS. Phnln-Lifiwgnpher. Washington, 0. c,

N-ITED ST TES PATE T OFFICE.

JOHN M. LAC-I-ILAN, on NEW YORK, N. Y. 1

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 414,911, dated November 12, 1889.

Application filed May 8, 1889. Serial No. 310,024- (NomodeL) tion.

My invention relates to marine and stationary boilers wherein circulating-pipes are employed in the fire-box and also in the wa ter-space at the bottom of the boiler below the ash-pit; and my invention consists in the construction and combination of parts, as hereinafter described and claimed, whereby reliable and eifective circulation is produced and the circulation is placed under easy and quick control of the engineer or fireman.

Reference is to be had to the accompanying drawings, forming a part of this specification, inwhich similar letters of reference indicate corresponding parts in all the figures. I

Figure 1 is a sectional side elevation of a boiler having myinvention applied thereto. Fig. 2 is a sectional plan view of the same. Fig. 3 is a perspective View of one of the pipe-couplings. Fig. 4is a reduced sectional plan view of the same. Fig. 5 is an enlarged view of the valve at the inner end of the stand-pipe.

B represents the ordinary boiler-shell; O, the tubes; and D the fire-box, containing the grate-bars E in the usual manner. In the space G are placed the stand-pipes H, which are bent and their upper ends passed through the tube-plate I into the water-space J of the boiler above the tubes. The lower ends of the said stand-pipes are each provided with a coupling K, formed with a single neck It to receive the stand-pipeH. Immediately in line with the neck is is formed the, neck It to receive the central heating or circulating pipe L. At each side of the neck It is formed a curved branch 70 to receive the side heating or circulating pipes M M. The front ends of the said heating or circulating pipes are fitted in a coupling N, having central coincident necks n n and curved side branches n 71 and this coupling connects the heating or circulating pipes with a pipe 0, which passes out to the front of the boiler and then inward therethrough, where it is connected to the pipe P, which leads into the water-space the pipes O P' and couplings Ninto the heat- Y ing and circulating pipes L M, thence through the couplings K and stand-pipes H to the water-space either above or below the waterline, as may be deemed desirable in practice. The current from the pipe 0 to the standpipe H, being direct through the central necks it n and central pipe L, meets the minimum of resistance or obstruction, which would not be the case if all the water were forced to pass through the two side pipes M and the curved side branches of the couplings.

The upper end of the stand-pipe H is provided with a valve H, constructed to receive a gate h. The passage h in the valve which receives the gate h is open at the bottom at W, so that clogging of the valve is impossible and there is no interference with its free operation. To the upper end of the gate h is attached the rod h which passes through the stuffing-box h, and is connected to one arm of the bell-crank lever h pivoted in a standard at the top of the boiler. To the other arm of the bell-crank lever is attached the operating-rod M, which reaches to the front of the boiler, where it can be easily reached and instantly operated for closing the cock. In that portion of each of the pipes O at the front of the boiler. is fitted a gatevalve 0, adapted for instant operation for closing the said pipes.

The pipes P in the space below the ash-pit are each formed with a bell-mouth 10, over which wire-cloth p is placed to prevent clogging, and numerous holes 10 are formed in the sides of the pipes to admit Water to the interior of all the line of the pipe.

Having thus described my invention, What I 5 claim as new, and desire to secure by Letters Patent, is-

The stand-pipe H, entering the boiler, in combination with the valve 11', having opening 7L2 and gate h, and the rod 715', bell-crank h, and operating-rod h, substantially as de- 10 scribed.

JOHN M. LACHLAN.

Witnesses:

F. O. MCOULLOGH, F. A. DBREMEN.