US429797A - The norris peters co - Google Patents

Description

(No Model.)

W. R. HONEY.

, FURNACE GRATE'... No. 429,797.

Patented June 10,1890.

UNITED STATES PATENT ()FFICE.

\VILLIAM R. RONEY, OF CHICAGO, ILLINOIS, ASSIGNOR TO WESTINGHOUSE,

CHURCH, KERR & COMPANY, OF NEIV YORK, N. Y.

FU RNACE-G RATE.

SPECIFICATION forming part of Letters Patent No. 429,797, dated June 10, 1890.

Application filed August 31, 1889.

To all whom it may concern.-

Be it known that 1, WILLIAM R. RONEY, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Furnace-Grates; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon,

to which form a part of this specification.

This invention has for its object to produce a construction in inclined furnace-grates combining a series of longitudinal grate-bars forming the lower and central portion of the grate and a series of transverse rocking bars located at the head of the grate with a view to the better adaptation of the grate to certain qualities of fuel and to special types of boilers and conditions of chimney-draft. The

longitudinal bars or the alternate bars of the longitudinal series have a lifting motion at their lower ends, and the transverse bars at the head of the grate have a rocking motion. The grate thus constructed is especially 2 5 adapted for burning very low grade Vestern bituminous slack-coal, which contains a large percentage of exceedingly troublesome clinker-making material, such as pyrites of iron, fire-clay, shale,1ime, sand, &c. In some kinds of \Vestern coal and slack the refractory substances are present in such quantities as to prohibit burning them in the ordinary manner with any degree of economy, for the reason that the resulting clinker in a short time 3 5 melts down upon the grate-bars and shuts off the air-supply and if not frequently removed soon destroys the said bars. By means of the combination-grate herein described these difficnlties are removed and the poorest quali- 0 ties of soft-coal slack may be burned with less attendant labor than is required in burning the best lump-coal in the ordinary manner and with less waste of fuel in stoking.

Describing my invention by reference to 5 the accompanying drawings, Figure 1 is a longitudinal section of an inclined grate and a portion of the furnace-setting containing my improvements, and Fig. 2 is a detail.

In said drawings, A represents the grate as a whole; B, the lower part of the inclined Serial No. 322,570. (No model.)

grate composed of longitudinal grate-bars; O, the upper part of the grate composed of transverse rocking-bars; D, the dead-plate over which the fuel passes from the hopper E to the grate-bars; F, the dumping foot-grate; G, the arch over the head of the grate and covering the coking-chamber II; G, the air-feed over the dead-plate D, and I the crank-shaft to which power is applied for actuating the several sets of movable grate-bars in the grate A.

The grates B and C, together with the dumping foot-grate F, are shown movably supported on longitudinal inclined side bars A, pivoted at their upper ends by a boltato webs or flanges 61 on the under side ofthe dead-plate D, in accordance with Letters Patent No. 409,305, granted to me August 20, 1889. Said dead-plate, the arch G, the airfeed G, the hopper E, the eccentric I, and the feed and grate rocking mechanisms actuated directly by said eccentric are also shown to accord with my aforesaid Letters Patent and other Letters Patent-to wit: Nos. 409,304 and I09,650granted to me on the same date. 7 5- These various devices and parts may, however, be otherwise constructed or mounted for the general purposes of this invention. The rocking grate-bars c c, forming the part C of the entire grate A, are also constructed 8:) and mounted in accordance with my aforesaid Letters Patent No.'-it09,650,in which former patent, however, the entire grate was composed exclusively of such rocking transverse bars. 8 5

In the present case the number of transverse bars a c is variable according to the quality of the fuel to be burned and other conditions under which the grate is to be employed.

It may be generally stated, however, that 0 there will be a plurality of said transverse grate bars c 0 adjacent to the dead-plate D and beneath the arch G, so as to form with said dead-plate the bottom of the cokingchamber II. 9 5

The grate B, which is composed of longitudinal bars I) 11, extends from the foot-grate F to the immediate neighborhood of the lowermost transverse grate-bar 0, so that the coal coked in the chamber H may pass directly we from said transverse bars to the upper end of the grate B.

The bars I) Z) are supported at their upper ends 011 a fixed crossbar A the upper edge of which is rounded to form a hinge on which the bars I) may turn as they are raised and depressed at their lower ends. For this purpose said bars I) are provided with a projection 12 which hooks over the upper edge of the cross-bar A as clearly indicated in the drawings.

A is also a stationary cross-bar near the lower ends of the grate-bars l) b and directly supporting the ends of the alternate bars I). The remaining or intermediate bars I) are severally supported and moved at their lower ends by arms J, projecting from a transverse rock-shaft J. The ends of the arms J work in notches b in the movable bars I), and said arms incline in the direction of the length of the grate-bars, as shown, so that when the shaft J is rocked said bars will be lifted and lowered.

For the purpose of rocking the shaft J and actuating the movable grate-bars b, said shaft is provided with a depending arm j, to the end of which is pivoted a connecting-rod K, lead ing to and through the vibrating arm L, which is actuated by the crank or eccentric shaft I through the medium of the link '2'.

Provision forlost motion and for the adj ustment of the rod K with respect to the vibrating arm L is made by means of the nuts Z l and interposed sleeve Z, as shown and described in my prior patent, No. 409,305.

The desired rocking motion is imparted to the transverse bars 0 c by the same vibrating arm L and connecting-rod K. To operate the rocking grate-bars c c from the rod K, said bars are connected in a familiar manner by the rod 0, and also with the rod K by a link 0 To give independent adjustability to the rocking movement of these gratebars, the link 0 is pivoted to a stud c, which projects from a box 0 that slides on the rod K, and is secured at any desired point on said red by means of a set-screw e.

For the further purpose of giving an independent lost motion between the actuating devices and the grate-bars c c, the link is provided with a slot for the reception of the pin 0, as best seen in the detail view shown in Fig. 2. By these or equivalent means each set of movable bars is independently adjustable as to its limit of movement, and both sets in every adjustment will work in harmony with each other.

IVhile only the alternate bars Z) of the longitudinal series of bars I) I) are shown to be movable, the bars I) may also be made movable, if desired, such movement, of course, being in an opposite direction from that of the bars Z). Other changes of construction may also be made without departure from my invention.

I claim as my invention 1. A furnace-grate comprising an inclined main portion and a foot-grate or dump, said inclined portion being composed of transverse rocking bars located at the head or upper part thereof, and longitudinal grate-bars forming the lower part thereof, the footrgrate or dump being located at the lower end of said longitudinal grate-bars, substantially, as described.

2. The combination, in an inclined furnacegrate, of longitudinal lifting-bars, transverse rocking bars located at the head of the grate, and mechanism for actuating the longitudinal and the transverse bars in harmony.

3. In an inclined furnace-grate, the combination, with longitudinal lifting-bars and transverse rocking bars located at the head of the grate, of mechanism for actuating the two sets of grates in harmony, and adjusting devices, whereby one set of grates maybe adj usted in its movement with respect to the other.

e. In an inclined furnace-grate, the combination, wit-h longitudinal lifting-bars and transverse rocking bars located at the head of the grate, of mechanism for actuating the bars, adjusting mechanism connecting the actuating devices with the longitudinal bars, and adjusting mechanism connecting the actuating devices with the transverse bars.

5. In a furnace-grate, the combination, with longitudinal lifting-bars and transverse rocking bars located at the head of the grate. of mechanism for actuating the two sets of bars, having connections with the latter affording alost motion and a different period of rest through such lost motion to each set of bars.

6. In combination, the lifting-bars of the lower longitudinally-barred grate 13, the upper connected transverse rocking bars 0 c, the crank-shaft I, the vibrating arm L, the rod K, the link 0 and the rock-shaftJ, provided with armsj and J, substantially as described.

In testimony that I claim the foregoing as my invention I aflix my signature in presence of two witnesses.

WILLIAM R. RONEY.

Witnesses:

M. E. DAYTON, TAYLOR E. BROWN.

Images