US966987A - Blower for boilers. - Google Patents

Description

E. B..BARNH1"LL. BLOWER FOR BOILERS. APPLIGATION FILED SEPT. 1, 1909.

966,987. I Patented Aug. 9,1910. 'y

'Mg/U Q Uiff@- iran sTATnsPATENr OFFICE# nnwnnn n. IsaaNHILI., or MAaIoN, INDIANA, AssIGNon 'ro ERNEST w. MICKLIN, or

- nnrnorr, MICHIGAN.

BLOWER FOR BOITIERS.

Specification of Letters Patent.

Application filed September 1, 1969. Serial No. 515,685.

To all whom fit may concern:

Be it -known that I, EDWARD B. BARNHILL, a citizen of the United States of America, residing at Marion, in the county of Grant and State of Indiana, have invented certain new and useful Improvements in Blowers for Boilers, of which the following is a specification, reference being had therein to the accompa' ying drawings. l

In blowers for water-tube boilers wherein a jet of steam is 'directed between the tiers of tubes, it is necessary that some provision be made for directing the jet back'and forth along the tubes-in order that as wide an area as possible be cleaned-by each nozzle.

This invention relates to a blower for water tube boilers wherein anfarrangement i of the partsenabl'es the operator to direct a jet back and forth .between tiers ofwwater tubes, and also to a construction which imarts a most effective shape to the jet wheref' pipe may be boiler equipped with a blower embodying.

feature of the invention, the outer casing of one of the lower nozzles being lndlcated in longltudlnal section; Fig. 2 1s a view 1n lon- I gitudinal lection showing the construction of one of t 1e blower nozzles; 'and Figs. 3, 4, and 5 are views'in detail showing the arrangement of a tip and-closure.

Referring to the drawingsnl indicates aV side wall ofl a Vboiler having water tubes 2 arranged in planes in staggered relation. A tubular casing 3 is embedded in the wall l parallel to and between the planes of the adjacent .tiers oftubes. A cylindrical nozzle d designed to withstand the heat of the boiler is secured to the inner end of the casing flush with the inner face of the wall-. A tubularV tip 5 having a rounded outer end with diametrical slot 6, is lonritudinally reciprocablerin the nozzle 4; and casing 3, projections 7 engaging key ways inthe noz zle 4 or other like means being provided to4 prevent its rotation, and a collar 8 or other suitable top being adapted to seat itself against a.A annular shoulder 9 or the like in the nozzle 4 and thereby 'define the outward casing 3 is closed by a stuin movement ofthe tip. A cylindricalplug 10 whose rounded end'conforms to the innerface of the slotted end of the tip 5 is rotatably secured'in the tip. A strap 11 or like means removably secures the plug in place. A transverse opening 12 throughthe inner end of the plug' is in communication with an axial aperture 13 which terminates in a port 111 on the outer end of the plug in register with the tip slot 6. The port 14 extends obliquely or in a curved line across the end `of the plug so that rotation of the latter moves the opening through the tip caused by the registration of the slot 6 with the port, from side to side ofthe tip. The

plug'is rotated by a stem whose inner sectionrv 0 15 that is secured directly to the plug, is in non-rotatable telescopic engagement with the sleeve 16 on the inner end of the outerv section 17 ofthe stem, a spring 18 encirfA cling the inner section Vin compression vbetween the innerA end ofthe sleeve, and stop pins 19 on the section, holding the latter normally retracted; The cuter end of the through which the outer section or the stem extends. A hand wheel 21V enables the operator to rotate the stem.

As herein indicated as a preferable ar rangement of the Orts for use on a large boiler, a set of casings is provided for each tier oftubes, with tees 22 on the outer end of the casing connected ,and joined to a steam pipe 23. Bock arms 24: on the eX- tremities of the stems are 4coupled by a link 25 so that the lblowers may be manipulated simultaneously.V Y y In operation, the tip is normally held in retracted position by the 'spring of the tele'- scoping stems. When steam is introduced into the casing, the pressure projects'the plug and tip toward the adjacent boiler plugin a-plane parallel to', .and etwe'en the tiers. By turningv the lu'g the operator di- Arects the jet back and orth along the tubes box 20 tubes. Theslot of the tip is arranged par thereby reachingv remote portions of the tubes without diiiiculty. By arranging the blowers in sets the boiler may be cleaned eX peditiously without danger tothe operator.

By forming the tip slot'with parallel slides a fan shaped jet is obtained which is not img lseater peded by the tubes nearest the nozzle and thereby reaches the tubes at the center of the boiler effectively. l

Obviously, changes in the details of construction may be made without departing from the spirit of the invention,l and I do not limit myself to any particular iorm or arrangement of parts.

What I claim as my invention is 1. In `a blower for a boiler, a. nozzle, a hollow tip therein having a rounded end .wall with transverse discharge slot therethrough, and a plug rotatable in "the tip having a port in its end face that is adapted to ,cross the slot at substantially right an- 1 reciprocable in the'nozzle, provided with a gated port on its inner end that crosses the transverse slot in its dischargeend, a plug rotatably secured in the ytip having a passage therethrough terminating in an elonslot at substantially right angles in any posltion of the plug, and means for rotating the plug in the up aaapted to hold the up' retracted in the nozzle when not under steam pressure. v

4. In a blower for a boiler a casing adapted to be connected to a source of steam supL ply at one end and provided with a nozzle at the other, a cylindrical tip non-rotatably reciprocable in thev nozzle provided with a transverse slot in its discharge end, a plug rotatably secured in the tip having a assage therethrough terminating in an e ong'ated port on its inner end that crosses the slot' at substantially right angles in any p0- sition ofthe plug, a .stem extending outside the casing having ,telescoping sections one of which is secured to the plug, and a spring adapted to hold the stem contracted when the casing is not under steam pressure.v

5. The combination of the Water tubes and wall of a boiler with a blower consisting of a series of cylindrical casings each arranged in the wall transversely to the tubes, a cylindrical nozzle at the inner end of each casing, a non-rotatable tip reciprocable in each nozzle provided with a transverse discharge slot in a plane parallel to the plane of the adjacent tubes, a plug rotatable in the nozzle adapted when turned to'deflect a jet vthrough the slot, a stem for turning the plug extending through the outer end of the casing, adapted to hold the stip retracted in the nozzle when the casing isnot under steam pressure, and means for simultaneously turning the stems in the several casings.

In testimony whereof I ailix my vsignature in presence of two witnesses.

EDWARD B. BRNHILL.

; Witnesses:

S. C. ARBUCKLEV H. W. RAY.

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