US1656380A - Locomotive smoke box - Google Patents

Description

Jan. 17, 1928. 1,656,380

w. LENTZ LOCOMOTIVE SMOKE BOX Filed April 15. 1927 3 INVENTOR BY fin i hasfor its object the Patented Jan. 17, 1928.

UNITED STATES PATENT OFFICE.

mm L'LEN'I'Z, or 'IUOKAHOB, lmw YORK.

noconorzvn smoxn 301:.

Application filed April 1:, 1927. Serial No. 188,876.

My invention relates to locomotives, and

rovlsion of an mproved type of smo e-box construct on adapted to accommodate the piping form ng a part of one or more of the locomotive auxiliaries.

One of'thelocations frequently used for locomotive feed water heaters is above the forward portion of the locomotive smokebox, ahead of the stack, and with a feed water heater so located it is necessaryto make numerous steam and water connections between the lower portions of the locomotive and the heater.

The location and arrangement of the necessary connecting pipes is a matter of considerable difliculty, as the permissible clearances in' modern locomotives are so small that there is frequently insufficient room for the larger pipes to be brought up to the heater outside thelocomotive boiler, and such pi ing even though it can be arranged in t is manner forms a serious ob; struction to the view of the locomotive en 'neer.

order to remedy this undesirable condition, it has been proposed to indent the sides of the smoke-box walls to form a depressed channel for the reception of such piping, and the present invention 1s m the nature of an im rovement on this construction, by means 0 which the necessary piping may be carried through the interior of the smoke-box.

In modern locomotive boilers, the diameter of the boiler shell and that of the smoke-box is very lar e, and my invention further contemplates t e provis1on of a structure WhlCh will provide a desirable stiffening of the sheets forming the smoke-box walls.

I have illustrated my invent1on in the accompanying drawings in which Fig. 1 is an elevation of the forward portion of the locomotive; Fig. 2 is a transverse elevation partly in section of the locomotive; and Fig. 3 is a fra entar section taken on the line 3-3 of Fig. 2 an showing the detailed construction. U

Referring now to Fig. 1, 1 indicates the sheet forming the walls of the smoke-box in which is located the stack 2 and which is provided with a flattened top 3, upon which is mounted the feed water heater 4. For illustrative purposes I have shown the smoke-box walls formed by a single integral sheet, but obviously such sheet may be built well-known up of a number of arcuate sections, and as hereinafter used in the claims the term sheet is to be-understood as including all such equivalent forms of construction. The heater illustrated is of a known typereceiving exhaust steam from the engine valve chests 5 through the exhaust steam supply ipes 6 and dischargin rom through the con ensate line 7. Boiler feed water is supplied from the usual feed pump 8 through conduit 9 to the heater, rom which it passes through conduit 10 and check valve 11 to the locomotive boiler.

The location of the heater and the pipin to and away from it is in accordance wit practice, but, by my invention I FI'OVlClG an improved means for taking care 0 the exhaust steam conduits 6 and such other conduits as it may be desirable to pass through the smoke-box. I accomplish this by providing at either side of the smoke-box the vertical tubular members 12 and '13 which connect suitable openings 14 near the bottom of the smoke-box with corresponding openings 15 in the top 3. The members 12 and 13 are permanently secured to the walls of the smoke-box sheet around the openings therein, preferably by welding, so that an air-tight joint is secured between these members and the walls of the smoke-box.

It' will be apparent from an inspection of Fig. 2 that the members 12 and 13 form not only passages suitable for the reception of piping, but also form vertical stifi'em'ng members which aid materially in distributing the weight of the heater more uniformly over the smoke-box walls.

The members 12 and 13 may be of any desired cross-sectional form, but I prefer to form such members either of circular or elliptical tubing, the sectional form employed depending upon the number and size of the ipes which are to be run through them. or illustrative urposes I have shown in Figs. 2 and 3' t e member 12 of nearly circular form and have shown as located therein only a single exhaust steam pipe 6, while the member 13 is more decided- 1y elli tical in form in order to accommodate not 0 y an exhaust pipe 6 but the condensate return p1pe7.

the condensate there- I Obviously, the number or character of i the pipes located in the tubular members 12 and 13 are immaterial to the present invention, and it will also be readily apparent that the smoke-box need not necessarily be provided with a flat top sheet such as I have shown, but may he in the form of a full cylinder with the members 12 and 13 attached to the smoke-box walls in the same manner at both their upper and lower ends.

Man changes and modifications in the form ilustrated will suggest themselves to those skilled in the art, but all such changes and modifications as may fall within the scope of the appended claims are to be understood as within the scope of the invention.

I claim:

1. In a locomotive, a sheet forming a smoke box wall and having a pair of openings therein, one of said openings being in the lower portion of said sheet and the other of said openings being in the upper portion of said sheet, and a tubular member permanently secured to said sheet around said openings and passing through the smoke-box,

2. In a locomotive, a sheet forming a smoke-box wall and having a pair of upper and lower openings on each side of the smoke-box, and tubular members connecting each pair of openings and passing through the smoke-box a locomotive. a sheet forming a smoke-box Wall and having apair of vertically aligned up er and lower openings on each side of sai smoke-box, and a pair of vertically disposed tubular members passing through the smoke-box and connecting each of said pairs of openings, said members forming vertical weight bearing stiit'eners providing open passages through the smoke box,

4, In a locomotive, a smoke-box torming sheet having an arcuate lower portion and a plane upper portion, said sheet being provided with an opening in its upper plane portion and a corresponding opening in its lower arcuate portion, and a tubular member connecting said openings.

5. In a locomotive a smoke-box forming sheet having an arcuate lower portion and a horizontal plane upper portion, said sheet having openings in its plane portion at each side of the smoke-box and corresponding openings in the lower arcuate portion, said lower openings being vertically aligned with said upper openings, and a pair of tubular members passing through said smoke-box with each of said members connecting one of said upper openings with one of said lower OPGIllIlgS,

WILLIAM L. LENTZ.

Images