US1821527A

US1821527A - Locomotive boiler

Info

Publication number: US1821527A
Application number: US278061A
Authority: US
Inventors: Edward J Reardon
Original assignee: Locomotive Firebox Co
Current assignee: Locomotive Firebox Co
Priority date: 1928-05-16
Filing date: 1928-05-16
Publication date: 1931-09-01
Anticipated expiration: 1948-09-01

Description

Sept. Y, 1931. E. J. REARDON LocoMoTIvE BoILER Filed May 16. 1928 0 O 0 O O O O O O Patented Sept. 1, 1931 EDwAnn J. 'JaEAnDorL sites vIreni' orl-'ice or 'crashed ILLfrNors, 'assienoa roL rooomofnvn rIRE-Box Aplilicatien med May -16, Serial No. 278,061.

This invention relates to improvements in locomotive boilers and it consists of the matters hereinafter described and moreparticularly pointed out in the appendedelaims.

" 15 The primary object 'of the invention is to provide in a locomotive boiler embodying the well known Nicholson thermic siphon in the firebox thereof, a'new-and novel Vconnection for the inlet or neclr endfof the siphon with the front end corner of one of the side water lega whereby not only a forward circulation of the water therein is produced in said legs but a lateral water circulation is established in the front water leg thus increasing the water movement and steaming' characteris- '725 products of combustion in the firebox, thus increasing,` the efliciency of the boiler as a whole.

These objects of the invention as well as others together with the many advantages thereof will more fully appear as I proceed with my specification. 1

In the drawings Fig. 1 is a Vertical longitudinal sectional view through the firebox end of a locomotive boiler embodying` my invention.

Fig. 2 is a transversc Vertical sectional view through the same on the-line 2-2 of Fig. 1.

Fig. 3 is a fragm-entary detail view partly in elevation and partly in section of a slightly modified form of the invention which will be more fully described later. r

Referring now in detail to that embodiment of the invention illustrated in Figgs. 1 and 2 of the accompanying' drawingsz-The locomotive boiler firebox shown therein 'comprises a fire Chamber which :itends from the back sheet 1 to the flue sheet 2 and from one to the other of the side sheets 3 with a grate or bottom indicated by the dotted` line 4 in Fig. 1. Said grate, as shown herein, extends po from the back sheet 1 to an inner throat sheet 5 whichis preferably integral with the flue sh-eet. The top of the fireboX is formed by a crown sheet G which extends from the back sheet 1 to the flue 'sheet 2. l V f.

` In the rear sheet 1 is provided the usual fuelv dooropening 7 and to the front or flue sheet are connected the usual fiues 8 through which the products of combustion are drawn by the exhaust nozzle (not shown) in the'fo manner well known. i The firebox is enclosed by a top plate 9 and the usual side-plates 10` together with the outside throatplate ll-and back plate 12 which-provides what is commonly termed the-wrapper of the boilerx'rfi5 Such plates together with the Sheets of the firebox define the side water legs 13 and front and 'rear waterlegs 14 and 15 of the boiler, all ofwhieh are Closed atftheir bottomends by the mud ring 16. The inner sheets defin-' 'ing the firebox'and the outer or wrapper sheets are joined or stayed together by the usual staybolts 17. f

lVithin the firebox is located one or more substantially hollow elements 18 which in this '75 instanee Conduct water from the forward bottom ends of the side water legs ofvthe boiler fireboxand in this instance two Vof such elements are shown`l one on each. side of the long'itudinal inedianplane of the fireboX.

1 Each water circulating'element or body 35 comprises a substantially triangularly shaped V'fiat' hollow body 20- with an upwardly and rearwardly inclined bulge'd bottom 21. The sidesrof said body are stayboltedtogether fand form at the top thereof a'longitudinally` Teo felongated discharge openingthat is defined by an outwardly extending flange 22' fixedin an opening in the crown sheet for that purnose. The bottom bulged portion` extends forwardly and downwardly beyond Vthe body '95 in the form of a tube 23 which is bentdownf wardly and laterallyV in curves of generous ra'dii to provide an inlet neck for the siphon. This neclr opens through and is fixed inthat corner of the adjacent associated side sheet '10 near the mud ring and front sheet respectively. Preferably that portion of the side sheet in which said neck is fixed is made in the form of a flexible diaphragm 3a but this feature is not absolutely essential to the broader aspects of the invention.

The water circulating element and its neck is usually made from a single sheet of metal and the welded seam is at the front end thereof and extends down along` the neck and to strengthen the neck against interior pressures stay-bolts 24 are employed and these staybolts extend at a right angle to the plane of the seam which seam is on the top side of the neck where it enters the side sheet.

In Fig. 3 Ihave shown a slightly modified form of neck construction which is'as followsz-Instead of making the curved neck part as an integral part of the siphon, I may make it from a single piece 25 of seamless tubing and butt weld it at one end as indicated at 26 to the neck extension 28a as shown in said Fig. 3. This constructionis advantageous in that it eliminates the use lof stay-bolts therein and permits a free and `uninterrupted sweep of the water through the neck. Again the neck is that part of the element which receives the heaviest bombardment of the products of combustion and V ing action, keeping the neck Clear and free o from sediment and is then vdischarged out through the top endof the element into the water space above the crown sheet. Thus there is created a flow of the colder water at the bottom of the Vwater legs and boiler spaces so that such Water is more thoroughly mixed with the hotter water of the boiler whereby steaming efficiency is increasedand unequal boiler strains due to 'temperature differences are eliminated.

' WVhile in describing my invention,rI have referred in detailto the form and arrangement of the various parts thereof, the same fi's to be considered as by way' of illustration only so that I do not wish to be limited thereto except as may be pointed1 out in the appended claims.

I claim as my invention 1. A locomotive boiler embodying' therein a firebox including side sheets, a crown sheet and front and rear sheets, a substantially rigid, water circulating element disposedin the firebox and'having Van elongated discharge end that opens through the crown 1 sheet and has a tubular inlet neck portion that curves downwardly and laterally to open through one of said side sheets at one of the corners of the'firebox near the bottom thereof.

2. A locomotive boiler Vembodying therein a firebox including side sheets, a crown sheet and front and rear'sheets, a substantially rigid water circulating Velement disposed in the firebox and having an elongated discharge end that opens through the crown sheet and has a tubular inlet neck portion that curves downwardly and laterally and opens through the adjacent side sheet at the front bottom corner thereof.

3. In combination with a thermic siphon having a substantially triangularly shaped flat body portion with a bulged bottom ex- 'tending beyond one endof said body to form a tubular neck portion and adownwardlyV and laterally curved seamless neck member secured to said tubular-neck portion.

In testimony whereof, I have hereunto set my hand, this lOth day of May, 1928.

EDVVARD J. REARDON.