US625913A

US625913A - whittle

Info

Publication number: US625913A
Authority: US
Publication date: 1899-05-30
Anticipated expiration: 1916-05-30

Description

No. 625,9l3. Patented May 30, I899.

' J. WHITTLE. EXHAUST BLAST APPARAT-US FUR LOCUMUTIVE FURNACES.

(Application filed Feb. 8, 1899.) I

2 Sheets-Sheefr I.

(No Model.)

n4: NORRIS PEYERS 00., PNOTQ-UTHO wnsmumon. u. c.

'rn STATES PATENT OF ICE.

JOHN WHITTLE, OF BOSTON, ENGLAND.

EXHAUST BLAST APPARATUS FOR LOCOMOTIVE-FURNACES.

SPECIFICATION forming part of Letters Patent No. 625,913, dated. May 30, 1899.

Original application filed June 28, 1897, Serial No. 642,745. Divided and this application filed February 8, 1899. Serial j ect of the Queen of Great Britain, residing at Boston, Lincoln county, England, have in vented certain new and useful Improvements in Exhaust Blast Apparatus for Locomotive- Furnaces, of which the 'following is a specification, and which is a division of my application filed June 28, 1897, Serial No. 642,745.

This invention relates to exhaust blast apparatus for locomotive-furnaces, and has for its object to provide an improved blast-nozzle for suppressing'or deadening the sound and for extinguishing any sparks that may be drawn through the fire tubes into the smoke-box by the force of the blast or while the fire is being trimmed. Y

To these ends my invention consists in the features and in the construction, arrange-.

ment, and combination of parts hereinafter described, and particularly pointed out in the claims following the description, reference bein g had to the accompanying drawings, forming a part of this specification, wherein Figure 1 is a vertical central sectional view of my improved blast-nozzle. Fig. 2 is a partial top plan view thereof, and Fig. 3 is a View showing the nozzle and blast-pipe arranged in the smoke box and stack of a locomotiveboiler.

Referring to the drawings, the numeral 1 indicates the smoke boX of a locomotiveboiler, and 2 the stack thereof. Arranged in the smoke-box is a blast-pipe 3, which at its lower end is connected with the usual exhaust-pipes (not shown) and at its upper end is externally threaded, as ate. Mounted on the upper end of the blast-pipe 3 is a thimble 5, provided at its lower end with a threaded ferrule 6, engaging the thread on the upper end of the blast-pipe, whereby the thimble may be adjusted vertically. The upper end of the thimble 5 terminates in a socket 7 of the shape of an inverted frustum of a cone, and fitted in the socket 7 is the blast-nozzle 8. The nozzle, as most clearly shown in Fig. 1, is cone-shaped both internally and externally and is formed in a series of concentric steps 9, which are of a gradually-decreasing (No model.)

The exhaust-steam as it rushes through thejet-openings is directed in fine spreading streams over the entire internal surface of the smoke-stack and suppresses or deadens the sound of the escaping steam and effectually extinguishes any sparks that may be drawn through the fire-tubes into the smokeboX by the exhaust-blast or while the fire is being trimmed. -By means. of the threaded ferrule 6 the blast-nozzle may be adjusted vertically in the smoke-stack. The conical shape of the socket 7 permits the escaping steam to spread over the inner surface of the nozzle for equaldistribution to and through the jets.

Having described my invention, What I claim is- V 1. A blast-nozzle for steam-boiler furnaces, consisting of a cone-shaped shell closed at its top or apex having a series of concentric steps of a gradually-decreasing size from the bottom upward, each step beingprovided with an annular series of jet-openings inclined upward and outward and extending entirely through the shell from the inner to the outer steps, substantially as described.

2. A blast-nozzle for steam-boiler furnaces, consisting of a cone-shaped shell having a series of concentric steps of a gradually-decreasing size from the lowermost to the uppermost, each step being provided with an annular series of jet-openings inclined upward and outward and extending entirely through the shell from the inner to the outer steps, in combination with a blast-pipe, and a socket connected with the blast-pipe and the lower end of the nozzle, said socket being of theshape of an inverted frustum of a cone, substantially as described and for the purpose specified.

consisting of a cone-shaped shell having a series of concentric steps of a grad ually-decreas 3. A blast-nozzle for steam-boiler furnaces,

ing size from the lowermost to the upperthe shell, in combination with a threaded my hand in presence of two subscribing Witblast-pipe, a threaded ferrule arranged on the nesses. threaded blast-pipe, a thirnble connected at i 1 its lower end with the ferrule and provided JOHN WVHITTLE 5 at its upper end with a socket in which the Witnesses:

nozzle is fitted, substantially as described. RICHARD Com: GARDNER, In testimony whereof I have hereunto set J AMEs GEORGE NEWMAN.