US1316628A - Locomotive-boiler furnace - Google Patents

Description

Patented Sept. 23, 1919.

2 SHEETS-SHEET l.

ATTORNEY C. MARTIN, la. vLocoMoTlvE BongR FURNACE.

APPLlCATON FILED JAN. 3l. i919- W ITNESS ES f QTZO 7W www l J. C. MARTIN, JR. LCMOTIVE BUILER FURNACE.

APeucATioN FILED JAN. al, 1919.

2 SHEETS-SHEET 2.

WITNESSES Patented Sept. 23, 1919` reo f` JESSE c. MARTIN, Jn., or SAUSALITO, CALIFORNIA.

LoooMoTIvE-BGILER FUR'NACE.

faience.'

Specification of Letters Patent.

:Patented sept. ce, troia.

Application led January 31, 1919. Serial No. 274,585.

To all whom z'z may concern:

- Be it known that I, JESSE C. MARTIN,J r., of Sausalito, in the county of Marin, State of California, have invented certain new vand useful Improvements, vin Locomotive- Boiler Furnaces, of which the following is a specification.

The hereinafter described invention relates to that class of open bottomrefractory lined locomotive type ire boxes wherein the fuel is ejected through a burner at the front end thereof and wherein the combustion chamber is provided by the fire box proper and the closure supported lfrom the mud ring thereof.

The objectof the invention is to provide means directly secured to the mud ring of an open bottom refractory lined locomotive type -fire box combustion chamber for ysupporting the rear end refractory wall thereof so as to provide an air passage into the combustion chamber between'the refractory wall andthe rear end-of the fire box and to maintain such wall in position entirely independent of supports secured to the sheets of the fire box thereby eliminating the necessity' of cutting and' tapping holes with steam tight threads into the fire box Sheets for studs to support the said wall, which with its weight andvibration of service causes frequent breakage of studs resulting in boiler failures, and hazard to enginemen as well as deterioration of the boiler sheets from renewed tapping of larger holes for studs to replace the broken ones. e

Another object of the inventlon is to provide more substantial means than studs .tapped into fire box sheets for maintaining as required when the rear end refractoryv` wall is supported by studs tapped in fire box sheets; the inaccessibility of such studs often calling for the removal of adjoining refractoryy linings as well as the refractory end wall itself with consequent expense of time and material.

To understand the invention referencev should be made to the accompanying drawings wherein, Figure 1 shows a vertical longitudinal section of an open bottom refractory lined locomotive type Vfire 'box and pan forming therewith the combustion chamber, the pan provided with refractory end' wall supporting means in accordance with my invention. Fig. 2 is a transverse section on line 2 2 Fig. l showing the rear endview of the supporting means whereby the refractory end wall is maintained in place.

In the drawings numeral ll is used to designate a refractory lined locomotive type fire box boiler, and Q the pan or closure attached by `studs vto the mud ring 3 of the fire box, the fire box and pan together forming the combustion chamber 4. The fuel is injected into the combustion chamber through a burner 5, located at the front end thereof, toward the refractory end wall 6.

The refractory wall 6 is shown set out from the rear end of thefire box and in the present adaptation of my invention against the plate 7, being :preferably inclined. The plate 7 is substantially fixed by angle irons 8 and bracing members 9 to the pan 2 being entirely -free of any direct attachment to the fire box sheets. Air is supplied into the combustion chamber 4 between the rear of the fire box and the refractory wall 6 through a communicating draft opening 10 at the end of the pan 2. The entire load of the refractory end wall 6 as shown is carried in the pan 2, which being attached tothe mud ri-n the said wall directly to the mud ring of the fire box.

In the use of the invention I do not restrict myself to the exact form of pan and supports as shown, it being within the scope 3. communicates the load of of the invention to provide any means nor- Y mally located at the lower portion of the lire box for supporting the refractory wall out of contact with the rear end of the fire box from the mudring thereof.

In practical service it is possible to maintain the refractory end wall as I Support it from the 'mud ring of the fire box combustion chamber at minimum cost and in accordance with locomotive'boiler rules andv regulations, performing inv a practical and efficient manner its true function of introducing air into the combustion chamber between tbe rear of the 'fire lbox and t'he wall as set out therefrom through the draft opening (10) at substantially the full width of the ico re box and While the `combustible 'gases are at the farthest point from the flues, which is highly desirable, this lbeing of particular importance in the wider ty-pe locomotive fire lboxes which without this full width of air distribution into the combusti-ble gases fail to receive the requisite amount of oxygen necessary in the'rear corners of the fire box, and as a result only partial oxidation 0f the combustible gases takes place with consequent fuel loss and depositlng-`V of obf jectionable carbon in the flues of the boiler.

In a locomotive type fire box wherein the fuel is injected through a 4burner at the 15 front end thereof and wherein a refractory end wall isset out from the rear end of the lire `box opposite the fuel delivery of means for supporting the said refractory wall by the mud ring of the re box.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JESSE o. Mairriu,V JR;

Witnesses ETHnL S. MARTIN.

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