US715899A - Endless-chain grate. - Google Patents

Description

No. 75,899. Patented 000. I6, I902.

W. J. TAYLOR.

ENDLESSCHAIN GBATE.

(Application filed Mar. 29, 1901.) (No Model.) 4 $ha'ots-Shaet l.

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Patented Dec. I6, I902.

w. J. TAYLOR. ENDLESS CHAIN GBATE.

A nmion filed Mar. $9, 1901.

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WITNESSES:

Jhgi/ ATTORNEY.

No. 75,899. Patented Dec. I6, |902.

W. J. TAYLORQ ENDLESS cum anus.

Application fi led Mar. 29, 1901.

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l0 v 1b Patented D06. I6, I902. w. J. TAYLOR.

ENDLESS CHAIN GRATE.

(No Model.)

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THE NORRIS PETERS 0 PHOYO-LITHO, WASHINGTIN. I). c

UNITED STATES PATENT OFF-Ion.

WILLIAM J. TAYLOR, OF KANSAS CITY, MISSOURI.

ENDLESS-CHAIN GRATE.

SPECIFICATION forming part of Letters Patent No. 715,899, dated December 16, 1902.

Application filed March 29, 1901. erial No. 53,428. (No model.)

T0 or whom, it may concern:

Be it known that LWILLIAM J. TAYLOR, a citizen of the United States of America, residing in Kansas City, in the county of Jacksonand State of Missouri, have invented a new and useful Improvement in Endless-Chain Grates, of which the following is a specification, reference being had therein to the accompanying drawings, forming a part thereof.

My invention relates to improvements in endless-chain grates for boiler-furnaces.

The object of my invention is to provide a structure in which the ashes, cinders, and clinkers may be readily disposed of, so as to enable the operator to keep a clean hot fire with a minimum of labor.

My invention has further for its object the providing of a construction in which burned portions of the grate may be' quickly and easily replaced by new ones and without h aving to draw the fire or interfering with the burning fuel. 7

My invention provides also a construction in which bituminous coal may be burned with the production of a small amount of smoke or soot.

My invention comprises a fire-box provided with an air-inlet and an air-outlet opening in combination with an endless or traveling chain grate, one side of which provides the fire or fuel support, and means by which the portion forming the fuel support may be made to move in a direction opposite to the direction of draft or from the exit-opening toward theinlet-opening. Bythisconstruction the fuel may be fed upon the grate near the bridge-wall and gradually fed forward toward the air-inlet opening, and the draft passing over the fuel will carry the heat and flame of the fuel over the fresh coal, thus consuming the smoke and producing better combustion.

My invention provides, further, a rocking grate disposed in a position such that the ma terial carried on the grate will eventually be deposited upon the rocking grate, from which it can be readily removed by rocking the said grate.

My invention provides,still further,an endless-chain grate comprising a series of parallel grate-supporting bars and a series of links connecting the said bars, so as to form an endless chain, and a plurality of gratebars mounted on each grate-supporting bar, to which they are hinged, the grate-bars being adapted to swing thereon into a position such that the free ends thereof will rest upon adjacent grate-supporting bars. The disposition of these grate-bars is such that as the grate is made to travel the grate-bars on one side of the chain will form the fire-support, and on the other side the bars will be so disposed as' to permit the passage between them of ashes and air.

My invention provides also suitable carrying-wheels for supporting the endless chain and means by which the operator may cause the grate to travel.

My invention provides,still further,certain novel features of construction, hereinafter fully described and claimed.

In the accompanying drawings,which illustrate my invention, Figure 1 is a vertical sectional view taken on the dotted linerij of Fig. 2, portions of some of the parts being broken away. Fig. 2 is a horizontal sectional view taken on the dotted line kl of Fig. 1, portions being broken away to disclose the driving chain or belt. Fig. 3 is a vertical sectional view taken on the dotted line 0 d of Fig. 1, a portion of three of the detachable members on one of the grate-supporting bars being broken away and the grate-bars connected therewith shown in cross-section.

Fig. 4 represents a view, partially in elevation and partially in vertical section, of three grate-supporting bars, the detachable members thereon, and the grate-bars connected therewith. Fig. 5 is a plan view of one of the gratesupporting bars having thereon two detachable members, the grate-bars of one of the said members and the grate-bars carried by it being shown in horizontal section. Fig. 6 is an end elevation view of the left supporting-plate of the fire-box. Fig. 7 is a vertical sectional view taken on the dotted line a b of Fig. 2, some of the parts shown in Fig. 2 being omitted in this view. Fig. Sis a side elevation view of the right fire-boX-supporting plate. Fig. 9 is a plan view of one of the grate-supporting bars. Fig. 10 is a perspective view of one of the detachable members. Fig. 11 is a perspective View of one of the Fig. 12 is a side elevation view grate-bars.

of the mechanism for rocking the rocking grate, which is shown in cross-section, and a portion of the operating-lever being broken off. Fig. 13 is a top view of one end of a grate-supporting bar having two links attached thereto, one of which is shown in horizontal section. Fig. 14 is an end view of a grate-supporting bar having one link connected thereto, the other being removed.

Similarnumerals of referenceindicate similar parts.

1 indicates the boiler, 2 the bridge-wall, and 3 the front of the fire-box, all of which are of the ordinary construction. At the front of the fire-box is a transverse vertical plate 4, and at the rear end is a similarly-disposed curved plate 5. These two plates are securelysupported by the fire-box walls. Supported at their ends by these two plates in any desirable manner are the right and left supporting- plates 6 and 7, respectively, located, respectively, at the sides of the fire-box and provided with openings in which are rotatably mounted the two parallel shafts 8 and 9, respectively. Upon each end of each shaft is rigidly secured a carrying-wheel 10, provided with peripheral notches adapted to receive therein the projections 11, which are provided two on each end of each of the gratesupporting bars 12, which are disposed parallel with each other and are consecutively connected by means of a series of links 13, the two ends of each of which are pivotally connected with the adjacent projections 11 on adjacent bars. The links and the grate-supporting bars 12 form an endless chain or belt supported by meansof the projections 11 upon the four carrying-wheels 10, the said chain or belt being made to travel by rotating, as hereinafter described,the carrying-wheels 10. In order to prevent the links from getting off the projections 11, a projection 14 is provided on each end of each bar 12, the two sides of the projection being recessed in a dovetail manner, so as to receive the tapered end of the adjacent link. The formation of the ends of each link is such that by turning the link on its projection 11 sufliciently the tapered end of the link that enters the dovetail recess in the projection 14 will pass out of such recess, at which time the link may be slipped oi the projection 11. This forma-' tion is achieved by making the tapered end of the link eccentric with the center of the opening in the link through which the projection 11 extends. In order to support the portion of the upper side of the chain grate located between the carrying-wheels, each side plate 6 and 7 is provided on its inner side with a longitudinal horizontal flange 15, adapted to receive 011 its upper side the projections 11 as they are disengaged from the carrying-wheels l0. Mounted on each bar 12 are one or more detachable members 16, comprising each a bodyprovided with two downwardly-extending arms, which embrace the sides of the bar 12. Each of these arms is provided with a bolt-hole, through which extends a bolt 17, which extends also through the bar 12 and has a nut 18 on one end. The member 16 is provided with a vertical flange, from the rear side of which extend a plurality of ears 19, to each of which is secured, by means of a pintle 20, a grate-bar 21, the forward end of which is bifurcated and the rear end of which is adapted to be supported by the adjacent bar 12 through the intermediacy of the member 16, carried thereon. The construction of the members 16, the grate-bars 21, and the bars 12 is best shown in Figs. 4, 5, 9, and 10. At the forward end of the endless grate-chain is a transverse horizontal rocking grate 22, the upper surface of which is in position to receive thereon the ashes, cinders, and clinkers carried on the upper portion or fire-support of the chain grate as the grate travels forward. Each end of the rocking grate 22 is provided with a projection 23, which enters a hole provided for it in one of the side plates 6 or 7. On the left end of the rocking grate 22 as viewed from the front is pivoted the rear end of a forwardly-extending link 24, the forward end of which is pivoted to the lower end of an upright lever 25, which in turn is pivoted to a bracket 26, secured to the forward side of the front of the fire-box. Pivoted to the bracket 26 is a pawl 27, the lower end of which is adapted to enter a notch provided in the link 24 in such a manner as to prevent movement of the link rearwardly, and thus preventing the rocking of the grate 22. Upon the shaft 8 is rigidly secured a belt or sprocket wheel 28, which is connected by means of a belt 29 or sprocketchain with a driving-belt Wheel or sprocketwheel 30, which in turn is rotatably mounted in a bracket 31, secured to the forward side of the front of the fire-box by means of a horizontal shaft 32, to which the wheel 30 is secured. Rotatable with the shaft 32 is a ratchet wheel 33, the teeth of which are adapted to be engaged by a pawl 34, pivoted to an upright lever 35, one end of which is pivoted to the shaft 32.

My invention is operated in the following manner: The parts having been assembled, as described, the fuel is placed upon the upper horizontal portion of the endlesschain grate resting upon the grate-bars 21. When new fuel is to be placed upon the grate, the lever 35 is reciprocated forward and backward, thus rotating the shaft 32 through the intermediacy of the pawl 34 and ratchetwheel 33. The driving-belt Wheel 30 is thus rotated, communicating its rotation, through the belt 29, belt-wheel 28, and shaft 8, to the carrying wheels 10. The rotating of the carrying wheels causes the chain grate to travel by engaging with the projections 11 on the grate-supporting bars 12, and the old fuel is thus carried forward away from the bridgewall 2 toward the rocking grate 22. An open or clear space is thus provided on the grate in front of the bridge-wall 2, in which space the fresh fuel is deposited. The flame and heat from the old or partially-consumed fuel is thus carried over the fresh fuel, causing the smoke and gas therefrom to be consumed. At each time that the fresh fuel is inserted the chain grate is thus caused to travel in the direction indicated by the arrows in Fig. 1, the oldest fuel, or rather its remains-so ch as ashes, cinder-s, and clinkersbeing finally deposited on the rocking grate 22, from which it can be removed by rocking the grate, as indicated by the arrow, Fig. 1. This is accomplished by disengaging the pawl 27 from the link 24 and then pulling the upper end of the lever forward, which will rock the grate 22, and thus deposit the material carried thereon into the ash-pit. As the belt passes around the forward carrying-wheels 10, the grate-bars 21 willswing into the position shown in Fig. l-that is, into a vertical position-thus providing open spaces in the lower part of the chain belt or grate for the admission of air from below or the passage of ashes from above. As the belt or chain grate passes around the rear wheels 10 the grate-bars will drop into their-former horizontal positions. serves as a guard preventing fuel from passing rearwardly. Each of the grate-bars 21 is provided with a vertical slot therethrough, as indicated by 36, through which air can enter into the fuel.

It at any time any of the parts exposed to the heat become burned out, they can be replaced by removing the bolt 17 and lifting outthe member 16, secured thereby to the bar 12. The pintle 20 can then be removed, and new grate-bars may then be inserted for those burned out, or a new member 16 may be made to replace the old one, after which the parts are replaced and the bolt 17 reinserted and secured in place by the nut 18. A further function is performed by having the gratebars 21 hinged at their forward ends only. With this construction easy access to the inside of the chain grate may be had for the removal of the bolts 17 when it is desired to replace any of the parts.

My invention is capable of any modifications without departing from its spirit.

Having thus described myinvention, what I claim, and desire to secure by Letters Patent, is-

1. Achain grate comprising a series of parallel grate-supporting bars, links connecting corresponding ends of adjacent bars so as to form an endless belt or chain, a member carried by each of said grate-supporting bars, and a plurality of grate-bars hinged to each member and adapted to so swing thereon as to rest upon an adjacent grate-supporting bar, substantially as described.

2. In a chain grate, the combination with a series of parallel grate-supporting bars, of links connecting corresponding ends of adjacent bars so as to form an endless belt, a mem- The curved plate 5.

her carried by each grate-supporting'bar, and a grate-bar hinged to each of said members and adapted to swing thereon so as to rest upon the adjacent grate-supporting bar, substantially as described.

3. A chain grate comprising a series of parallel grate-supporting bars, links connecting corresponding ends of adjacent bars so as to form an endless belt or chain, a plurality of members carried by each gratesupporting bar, and a plurality of grate-bars hinged each atone end to each of said members and adapted to swing thereon so as to rest upon an adjacent grate-supporting bar, substantially as described.

4. A chain grate comprising a series of parallel grate-supporting bars, links connecting corresponding ends of adjacent bars so as to form an endless belt or chain, a plurality of members carried by each gratesupporting bar, and a plurality of grate-bars, each of said members having one of said grate-bars hinged at one end thereto and adapted to swing thereon so as to rest upon a grate-supporting bar adjacent to the one carrying the said member, substantially as described.

5; In an endless-chain grate, the combination with a series of parallel grate-supporting bars, of a series of links connecting corresponding ends of adjacent bars so as to form an endless chain or belt, a member carried by each grate-supporting bar a plurality of gratebars mounted on each of said members and having a hinged connection therewith and adapted to swing thereon so as to rest upon an adjacent grate-supporting bar, and a plurality of carrying-wheels provided with means for engaging and driving the endless chain comprising the links and gratesupporting bars, substantially as described.

6. In an endless-chain grate, the combination with a series of parallel grate-supporting bars provided each at each end with a projection,of a series of links connecting corresponding ends of adjacent bars so as to form an. endless chain or belt, a member carried by each grate-supporting bar a plurality of gratebars mounted on each of said members and having a hinged connection therewith and adapted to swing thereon so as to rest upon an adjacent grate-supporting bar, and a plurality of carrying-wheels provided with means for engaging and driving the grate-supporting bars through the intermediacy of the said I projections on the grate-supporting bars, substantially as described;

7. In an endless-chain grate, the combination with a series of parallel grate-supporting bars, of a series of links connecting corresponding ends of adjacent bars so as to form an endless chain or belt, a member carried by each grate-supporting bara plurality of gratebars mounted on each of said members and having a hinged connection therewith, a plurality of carrying-wheels embraced by the said endless chain or belt, and means for rotating the said carrying-wheels, scribed.

S. In an endless-chain grate, the combination with a series of parallel grate-supporting bars, of a series of links connecting corresponding ends of adjacent bars so as to form an endless chain or belt, a member carried by each gratesupporting bar a plurality of gratebars mounted on each of said members and having a hinged connection therewith, a plurality of carrying-wheels embraced by the said endless chain or belt, a lever, and means for rotating the said carrying-wheels and driving the said endless chain or belt when the lever is operated, substantially as described.

9. In an endless-chain grate, the combination with a series of parallel grate-supporting bars, of a series of links connecting corresponding ends of adjacent bars so as to form an endless chain, a member carried by each grate-supporting bar a plurality of grate-bars mounted upon each of said members and havinga hinged connection therewith, a plurality of carrying-wheels embraced by the said endless chain, a lever, a pawl carried thereon, a ratchet-wheel engaged by the said pawl, and means for imparting rotation from the ratchetwheel to the carrying-wheels, substantially as described.

10. In an endless-chain grate, the combination with a series of parallel grate-supporting bars, of a series of links connecting the same so as to form an endless chain, a member carried by each grate-supporting bara plurality of grate-bars mounted upon each of said members and having a hinged connection therewith, a plurality of carrying-wheels embraced by the said endless chain, a shaft rotatable with two of the said carrying-wheels, a lever, and means for imparting rotation to the said shaft when the said lever is operated, substantially as described.

11. In an endless-chain grate, the combination with a series of parallel grate-supporting bars, of a series of links connecting the said bars so as to form an endless chain, a member carried by each grate-supporting bar a plurality of grate-bars mounted on each of said members and having a hinged connection therewith, a plurality of carryingwheels embraced by the said endless chain, a shaft substantially as derotatable with two of said carrying-wheels, a belt-wheel rotatable with the said shaft, a lever, a driving-belt wheel,a belt connecting the two belt-wheels,and means for imparting rotation to the driviug-beltwheel when the lever is operated, substantially as described.

12. In an endless-chain grate, the combination with a series of parallel grate'supporting bars, of a series of links connecting the said bars so as to form an endless chain, a member carried by each grate-supporting bar a plurality oi grate-bars mounted on each of said members and having a hinged connection therewith, a plurality of carrying-wheels embraced by the said endless chain, a shaft rotatable with two of the said carrying-Wheels, a belt-wheel rotatable with the said shaft, a lever, a pawl carried by the lever, a ratchetwheel engaging the said pawl, a driving-belt wheel rotatable with the ratchet-wheel, and a belt connecting the two belt-wheels, substantially as described.

13. In an endless-chain grate, the combination with a series of grate-supporting bars each provided at each end with three projections, of links connecting the outer projections with the outer projections of adjacent bars, the central projections being so formed as to prevent the removal of the links from the projections on which they are mounted excepting when the links have been turned on the said projections to a proper position, substantially as described.

14. In an endless-chain grate, the combination with a grate-supporting bar, of a detachable member mounted thereon, and a series of grate-bars each having a hinged connection with the said detachable member, substantially as described. I

15. In an endless-chain grate, the combination with a grate-supporting bar, of aplurality of detachable members mounted thereon, and a plurality of grate-bars each having a hinged connection with the said detachable members, substantially as described.

16. In an endless-chain grate, the combination with a grate-supporting bar, of a plurality of detachable members mounted thereon and provided each with a plurality of ears, and a plurality of grate-bars hinged one to each of said ears, substantially as described.

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

\VILLIAM J. TAYLOR.

Witnesses:

WARREN D. HOUSE, JEssIE R. CoMsTocK.

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