US1584801A - Attachment for boilers - Google Patents

Description

May 1s 1926.

'155849801 w. R. FENDER ATTACHMENT Fon BOILERS Filed April 5, 1925 3 sheets-sheet 1 fm T Z WERE/V054? May 18,192@ .1,584,801

l W. R. PENDER ATTACHMENT FOR BoILERs Filed April, 1925 3 Sheets-Sheet 2 --Illllv fr'g . Il@ "Hangul" FENDER ATTACHMENT FOR BOILERS May 18 ,19m

3 Sheets-Sheet 5 a proper mixture of Patented May 18, 1926.

WINNZEIELD RUSSEL FENDER, 0F HOUSTON, TEXAS.

Ar'rAeHMENrf Application mea April 3,

This invention relates to attachments for boilers, and more particularly to air supply indicators for oil tired boilers.

In the present invention, I provide an attachment adapted to be placed in the gas outlet of an oil tired 'boiler by means ot whichthe operatormay determine whether air and oil is being fed to the boiler.

The attachment consists of a light adapt'- ed to be arranged on one side'of the outlet passage, and a mirror on the opposite side in alinement therewith, together with means for permitting the operator to observe the reflection of the light in the inirror and thus determine the character oi' the gases passing through the outlet passage.

An object of the inventionis the provision of a mirror that ma be adjusted without moving the casing of the attachment to cure any detects inthe installation of the deviceor "take care of any7 movement of the boiler walls. l

'A further object of the invention is the provision ot means for cleaning the light and mirror to prevent accumulation of soot thereon.

In the accompanying drawings, I have shown several embodiments of the invention. In this showing:

Figure 1 -is a horizontal sectional view of' the gas outlet of a boiler showing the invention applied,

Figure 2 is a front elevation of the mirror casing detached,

Figure 3 is a vertical sectional view on line 3 3 of Figure 2,

Figure 4 is a horizontal sectional view on line 4 4 of Figure 3,

Figure 5 is a view similar to Figure 1 showing the method of installing the apparatus on a pair of boilers forming a battery, y Figure 6 is a similarview showing the device applied to the smoke stack,

Figure 7 is a detail sectional view on line 7-7 ot Figure 6,

v Figure 8 is a similar view on line 8-8 of Figure 1, and

Figure 9 is a section taken on line 9-9 of Figure 5.

Referring to Figures 1 to 4 of the drawings, the reference numeral 1 designates the walls of a boiler separated from each other to provide a space. The attachment formingthe subject matter of the present inven- -ron' Bomans'.

1923. Serial No. 629,703.

Y at an angle of 45 degrees to the axis of the pipe and forming in eii'ect, an elbow. 'The opposite end of the mirror casing is threaded for the reception of a sight tube 5. A mirror 6 is mounted in the mirror casing in a holder 7, the mirror being retained in the holder by means of lugs 8. A threaded stem 9 extends from the holder through the wall 4 and a nut 10 is mounted thereon. The

threaded stem is best arranged substantially centrally of the mirror holder. The wall 10 is :further provided with a .plurality of threaded openings for the reception ot' lugs 11 which bear against the rear face of the v mirror holder to permit adjustment thereof.

The sight tube 5 is provided' with a plain glass or lens 12 of slightly smaller diameter than the diameter of the-tube (see Figure 4). This glass is retained between substantially L.shaped brackets 13 and 14 which are secured to the walls of the tube by means ofbolts 15. Opposite the pipe 2, a second pipe 16 is mounted in an opening in the wall of the boiler and,a lamp 17 is arranged within this pipe. As shown, the lamp is mounted in a socket 17 arranged on the end of a f pipe or conduit 18. The conduit is supported centrally of the pipe by suitable supporting members 19. Electric feed wires 20 extend through the conduit to the lamp socket. The end of this pipe is closed by a cap 21 having a plurality of openings 22 formed therein (see Figure 7).

In Figure 5- of the drawings, I have shown the attachment applied' to two boilers arranged in series. The boilers are provided with outer ,walls 23 and are separated from each other by an inner wall 24. The inner wall is provided with two transverse openirgs 25 each having a pipe 26 arranged therein, and is further provided with a longitudinal opening extending through the back of the boiler to the openings 25. The pipe 16 is arranged in this opening and the lamps 17 are supported in the pipes in the manner described, each being disposed in alinem-nt with one of the transverse open'- ings 25, as shown in Fig. 9. Mirrors are arranged in the two outer walls 23 in alinement with the openings 25, the construction of the mirror support being the same as in the form of the invention heretofore described. 4

In Figure G of the drawings, the attachment is shown applied to the smoke stack 27 of a boiler and as shown, the smoke stack communicates with the gas outlet through passages 28 and is provided with a damper 29 in the usual manner. The light 17 is supported in a tube 30, arranged in an opening in thel stack and the mirror support yis likewise arranged in an opening in the stack opposite the lamp support.

The operation of the. device will be apparent from the foregoing description. The mirror and light are set in the wall of the boiler on opposite sides near the Hue gas outlet and the gas passing between the mirror and light absorb or deiect the rays of light from the light element. The amount ot' this deflection is observed in the mirror and as the deflection bearsa certain ratio to the required air supply, the proper proportions can be determined by this observation. By observing the density or haze point ot' the gas leaving the boiler, the conditions under which the boiler is operating may be readily determined. It is well known that when the minimum air supply has been reached, a small amount of haze will appear at the gas outlet. A bright light on the mirror indicates excess air and a dark mirror will indicate insutlicient air. The minimum air supply to support complete combustion has been reached when a red light is reflected on the'mirror.

By providing a glass or lens 12 in the tube slightly smaller in diameter than the tube, the passage of air through the sight tube and the mirror casing is permitted at all times which keeps the mirror clean. Likewise, the provision of holes 22 in the cap 21 permits a slight amount of air to pass through the tube 16 and keep the lamp clean.

he mirror may be adjusted by means of the screws or studs 11 to compensate for mis-alinement in the installation or morement of the boiler walls.

By providing an attachment -for each boiler, improper conditions may be immediately located where a number oi boilers are connected to the same smoke stack. Under ordinary conditions, one boiler of a series may get out of adjustn'ient and produce considerable loss of fuel oil before it can be dctermined which boiler is causing the trouble.

It is to be understood that the forms ol' my invention herewith shown and described are to be taken as preferred examples ot the same and that Various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claim.

Having thus described my invention, l claim:

An attachment for oil tired burners a gas outlet provided with oppositely arranged alined horizontal openings communicating therewith comprising a lamp supporting member arranged in one ot' said openings, a mirror casing arranged in the other otl said openings, a mirror holder mounted in said casing, a threaded pin carried by said mirror holder substantially cent-rally thereof and projecting loosely through said casing, a nut mounted on said pin, adjusting means carried by said casing and contacting with the outer portions of said mirror holder, a mirror mounted in said holder and adapted to reflect rays of light from a lamp in said lamp supporting member and a sight tube communicating with said mirror casing.

In testimony whereof, I aiiix my signature.

VINN FIELD RUSSEL FENDER.

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