US103695A - Ja-mes davenport whelpley and jacob jones stoker - Google Patents

Description

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Letters Patent No. 103,695, dated .May 31, 18

IMPnovnMEN'i' INIEEDING FUEL TO, METALLURGICAND OTHER FURNACES.

:24: Schedule referred to in these Letters Patent and making part of the same To all to whom these presents shall come:

Be it known that we, J urns DAVENPORT \VHELP- LEY and JACOB J ones Sronnn, both of Boston, in thoState of Massachusetts, have invented an Improvement in the ldethod of Feeding Fuel to Metallurgic and other Furnaces, which the following I specification and accompanying drawings sufficiently explain.

We have described in our patents of March 13,- 1866, No. 53,208; reissue No. 3,857, dated March 1, 1870; March 31, 1S68,'No.'76,280; and March 22, 1870, No. 101,067, our method of introducing pulverized fuel into tire-boxes and furnaces. i

In those patents the pipe forintroducing the fuel from the pulverizer into the furnace is a simple straight or'curved pipe, with the delivery end round or flattened and spread to a fan-shape. 1

Experiments have demonstrated to us that, in many cases, a dilferent style would be advantageous. We have invented one, of which the following is a correct description.

Description of the Accompanying Drawings.

Figure 1 is a plan showing pipe with branches in some horizontal plane.

Figure 2, elevation showing pipe with branches in in a vertical line. I

Figureb, plan showing pipe with branches in same 'or'ncarly same horizontal line, en ering end and sides of furnace.

A main pipe, A, fig. 1, leading from the pulverizer, branches off into two or more pipes, B 13, whose. combined area is equal to the area of the pipe A, which enter the fire-box of the furnace on the same horizontal plane, the delivery cndofthesc pipes being, preferably, made fan-shaped. By this arrangement it will be seen that a broader and more widely-distributed flame or flames can be made than by use of the single jet.

Most double puddling --furnaces, .and some other furnaces, such as furnaces for heating armor-plate, 8m, are as wide or wider than they are long, so that the advantages of a branching pipe, broadly distribuling the flame, are, in such,- very decided.

For applying the pulverized fuel to very long furnaces, as, for instance, to those for heating spikerods and tubc-plateswherc a. uniform heat is requisite throughout the whole length, we have designed a fuel-delivery pipe, from the pulvcrizer to the furnace, with two or more branches, fig. 2, in a vertical line, entering at different points along the long axis of the furnace, the shorter branch entering, preferably, into one end of the furnace, and the longer branches at different points in the roof, as shown in the drawings.

And we have alsov designed, as shown in fig. 3, a deliverypipe for the pulverized fuel, with several branches in the same or nearly thesame horizontal plane, through which the fuel is introduced into the end and sides of the furnace. Another special advantage ;in the use of the branched pipe is, that two or morcfurnace orboilcrfires, as at fig. 4, may be fed with pulverized fuel by one machine, one pulvcrizer sufiicing for a group of two or more (within reasonable limits) boilers or furnaces, carrying abranch pipe to each one of them. Thus, great economy in space. labor. and cost is offected. Y i

lt will be seen that the valves or vanes 'G C C 0 maybe so adjusted, as at X, that an even delivery of fuel shall be made through each branch of the de livery-pipe, or so that, as at Z, the delivery through the branches shall be unequal.

The openings D D D l), in the walls of thefurnacc or fire-box through which the pipes are int-roduced are largerthan the pipes themselves, and those portions of them not filled by the pipes are closed from without by plugs or doors, E E E E.

When the jets of pulverized fuel and airare being introducedthrough the pipes into the furnace or firebox, any one. or all of these plugs or doors may be wholly or partially. withdrawn or opened, to permit the introduction of more air at any desired point.

I By these arrangements, we are able not only to maintain, if desirable, an oven temperature in every part of the furnace or fire-box, but, by regulating the distributing vanes C and the plugs E E F, we can so proportion amide-liver the fuel and air through each branch pipe, and at their-entrance into the furnace or fire-box, that we can produce in'any part of the fur naec whatever character of 'flzime,-cither oxidizing, reducing, or neutral, we may prefer.

By this arrangement of the openings 1) l) 1), into i which the pipes enter, thea-ir which may enter them is drawn in by the slight vacuum created just at these points by the moving column of air-and pulverized fuel jetting from the mouths of the pipes.

\Vc do not confine ourselves to this method of introducing an additional supply of airat any of these,

points, for sometimes we may introduce it by pressure or blast from a blower, and when we desire to int-roduccit heated, its temperature may be raised by be ing forced or drawn through channels or chambers in the walls of the furnace or stack.

\Vhat we claim, and desire to securev by Letters Patent, is-- The device for introducing and regulating the supply and introduction of pulverized fuel audair into furnaces and fire-boxes, for the purposes and in the manner and with the apparatus substantially as desc ribed.

JAMES D. WHELPLEY.

JACOB J. STORER.

Nitnesscs:

, EDWARD Rnnour,

- CHARLES M. Nronnnsox.

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