US279250A

US279250A - Grate

Info

Publication number: US279250A
Authority: US
Publication date: 1883-06-12
Anticipated expiration: 1900-06-12

Description

4 Sheets-Sheet 1.

T. O. JOY.

(No Model.)

GRATE.

No. 279,250. Patented June 12,1883.

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4 Sheets-Sheet 2. T. G. JOY.

' ,GRATE.

(No Model.)

No. 279,250. Patented June 12,1888.

Inventor;

- Wm eases (No Model.) 4 Sheets-Sheet 3.

T. G. JOY.

GRATE. No. 279,250. Patented June 12,1883.

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UNITED STATES PATENT OFFICE.

THADDEUS G. JOY, OF TITUSVILLE, PENNSYLVANIA.

GRATE.

,To aZZ whom, it may concern Be it known that I, THADDEUS 0. Joy, a citizen of the United States, residing at Titusville, in the county of Crawford and State of Pennsylvania, have invented a new and Improved Grate, of which the following is a specifi'cation.

This invention relates to that class of shaking-grates in which the bars are provided with projecting teeth or short cross-bars and arranged to rock on bearings. Its objects are, first, to provide a grate of this class in which the bars may be worked smoothly and easily through a given range of motion for shaking out ashes and clinkers and loosening up the fuel, and may be turned farther to separate the short crossbars by a sufficient distance to permit the contents of the grate to be dumped 1 second, to so construct and arrange the oscillating cross-bars of the grate that large lumps of coal cannot escape between the bars while they are being worked, and that clinkers and slate will-be crushed between the ends of opposite rows of the cross-bars; third, to provide an independent end or side dump for the grate, in addition to the provision for dumping by turning the bars; fourth, to secure the bars against accidental displacement from their bearings, and to provide for the ready replacement of abroken or burned-out bar by a new one; and, fifth, to provide the grate with outside operating means which may be detached to permit the grate to be inelosed and readily connected for operating the grate when desired.

With these objects in view, my invention consists in certain novel constructions and combinations of devices, which will be hereinafter fully described, and pointed out in the ap pended claims.

In the drawings, Figure 1 is a perspective view of a grate constructed according to my invention. Fig. 2 is a section on the line :0 w in Fig. IL. Fig. 3 is a similar section, showing the cross-bars of the gate tilted, as in the act of shaking the grate. Fig. 4 is a perspective view, showing the grate dumped at the end or side, and having a portion of the base-plate broken away to expose to-view the supports and-operatiiigconliections of the bars. Fig. 5 is a section through the bed-plate and one of the grate-bars and its supports on the line 9 g No. 279,250, dated June 12, 1883.

(No model.)

of Fig. 1. Fig. 6 is a similar section, showing the bar dumped at the end. Fig. 7 is a diagram, partly in section, illustrating the con struction and operation of the stops whichlimit and adjust the extent of rocking motion of the grate bars or sections. Fig. 8 is a diagram taken at right angles to Fig. 7 and Fig. 9 is a similar diagram to Fig. 8, but illustrating the manner of dumping the grate by turning the bars with their hearing at one end and lower ing the bars at their other end.

The letter A designates the bed-plate, having the edge surrounding the grateopening notched, as shown at a, to permit the passage of ashes between the plate and the crossbars of the grate.

B indicates the grate-bars, each of which consists of a supportingshaft, I), provided with transverse short bars I), the main portions of which project above the supportingshaft, and are preferably straight or fiat on their upper edges. These cross-bars are secured at the proper distance apart on the shaft by any ordinary or suitable means, and each crossbar has its ends which stand adjacent to other bars notched or cut away on their lower edges to form stop-shoulder portions 0 c, the purpose of which will be presently explained. Those cross-bars which are upon the. outer shafts have only their inwardly-projecting ends notched or toothed and their other ends are cut off to conform to the shape of the opening in the bed-plate. The opening may, however, be rectangular, in which case the cross-bars would not need to be cut off. The shafts-b of the grate-bars h: ve their bearings at one end upon a bearing-bar, d, the ends of which are pivoted in lugs d, which depend from the under surface of the bed-plate A, and each bar-shaft is provided with lugs or collars e, whiehprojeet alongside the bearing-bar and prevent the shaft from moving endwise, and also prevent the bearing-bar from turning 011 its pivots when not required to do so. ends of the bar-shaftsb are supported on a The opposite crank-bar, f, the journals of which have their bearings in lugs f, projecting from the under surface of I the bed-plate. One of the ends of the crankbar projects outwardly beyond its bearing, and is pl'Wided with an operatinghandle, f-'. hen the crank-bar is turned up IOO the tops of the grate-bars are supported on a level with and close the opening in the bed plate, as shown in Fig. 1; but when the crankbar is turned down the grate-bars are inclined downwardly from their opposite bearings, as shown in Fig. 4, and permit the charge to be readily dumped at one side of the grate. From the under side of the bed-plate projects a rib, which prevents the bar-shafts I/ from rising from their bearings on the bearing-bar (I when the grate is raised; but when it is lowered, as in Fig. 4, and as illustrated also in Fig. 6, the shaft-s are at such a distance from the rib 9 that they may be readily raised to clear the collar or lugs e from the bearing-bar d, to permit the bars to be removed longitudinally. The ends of the shafts I) are preferably beveled on their upper surfaces to give room for raising them. Each of the grate-bar shafts b has a downwardly-projecting arm, 71, having at its lower end an outwardlyproiecting pivot-pin, h, and these pivot-pins enter bearings formed for them in an operating-bar, '1, which is supported by the pivots. One end of this operating-bar is extended beyond the bed-plate, as shown at i", andhas an upwardly-projecting pin, 2', with which is loosely engaged one end of a link, k, the opposite end of which is pivoted to the lower end of an operatinglever, L, which is fulcrumed at the end of an arm, I, projecting from the bed-plate.

It obvious that when the lever L is vibrated a rocking motion will be communicated to the grate-bar shafts I) through the intermediate connections which have just been described; and this rocking motion of the shafts will cause the cross-bars to oscillate, assuming inclined positions alternately in opposite directions, and thus shaking up the charge upon the grate, and separating the ashes, clinkers, and slate from the live fire and fuel. In simply shaking the grate to clear it of ashes, slate, and clinkers, and to loosen up the fuel, the eross-bars should have a limited oscillation, which will not permit them to so nearly approach a vertical positi on as to leave space enough between the grate-bars for the fuel to fall through, and in order to limit the rocking motion of the barshaftsb, and at the same time provide for turning them sufficiently to dump the contents of the grate between the bars, when required, I provide adjustable stops m m, which project from the under surface ofthe bed-plate and stand in the path ofthe adj acent arms h of the shafts I). These stops are simply metal blocks with projecting lugs m, against which the arms h strike at the end of their movement. The blocks are secured to the bed-plate by slot-and-bolt connection, as shown at n, so that they may be adjusted to permit the necessary limited rocking of the bars for shaking the g ate, or may be set farther back to permit the grate-bars to be turned through nearly a quarter-revolution, and thus bring the cross-bars to so nearly avertical position that the fuel will all be dumped between the grate-bars. The ends of the lugs m are of such width that when the grate-bars are lowered at their dumping ends, the arms h will be carried so that they will not strike the stops, and the bars may betherefore turned freely to assist the dumping. The lugs in may be formed 011 slide-bars, which are held in place in any well-known manner, and thus the bolts and nuts be dispensed with.

The stop-shoulder portions 0 a at the ends of the crossbars Z) are an important feature of my invention.

It will be observed, referring to Fig. 3, that when the ends of one row of crossbars are lowered the ends of the next are raised, and clinkers and pieces of slate will slide down the surfaces of one set of cross-bars and strike against the shoulders c and come under the overhanging portions 0 of the next row, so that when the position of the bars is reversed the said slate and clinkers will be crushed, and thus prevented from clogging up the grate. Large pieces of coal cannot pass under the overhanging shoulder portions 0, and so, in case they strike the ends of the portions 0, they will be shaken up into the fire, instead of escaping.

The link 7:, at the lower end of the operating lever L, it will be observed, is pivoted to swing vertically, and may be readily detached from the pin '5" and allowed to hang freely downward. The object of this is to permit the space under the grate to be inclosed by a wall and access permitted to the operating-bar through a small door, which may be closed ordinarily, or when the grate is not required to be shaken, and opened to permit the link it to be engaged with the pin 6.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. A rocking grate-bar comprising a long rocking shaft and a series of shortcross-bars which are formed, respectively, with the notched portion 0 c, which forms a stop-shoulder, and a bearing and breaking surface, sub stantially as and for the purpose described.

2. The combination of a plurality of rocking grate-bars, which respectively comprise a long rocking shaft and a series of short crossbars, which are formed, respectively, with the notched end portion, 0 c, which forms a stopshoulder, and a bearing and breaking surface, substantially as and for the purpose described.

3. The combination, with the rocking gratebar shafts I), provided with the collars or lugs e at one end, of the bearing-bar d, entering between said collars, substantially as described.

4. The combination, with the grate-bar shafts b and the bearing-bar d, of the collars'or lugs e, projecting from the shafts on opposite sides of the bearing-bar, and the rib g, projecting downward from the bed-plate, and adapted to prevent the shafts from rising from their bearings, substantially as described.

5. The combination, with the rocking gratebar shafts b, having downward-proj ectin g arms IIO 71, of stops m, arranged to limit the rocking and adjustablestops' m, arrangedto permit said to movement of said grate, substantially as deshafts to be rocked for shaking the grate or scribed. turned for dumping it, as required, substanv 6. The combination, with the operating-bar tially as described.

5 i connected with the grate-bars of the operating-lever L, and the link k, adapted to be i THAD-DEUS connected to or disconnected from the said op- Witnesses: crating-bar at will, substantially as described. LEwIsB. SILLI AN,

7. The grate having shafts b, with arms h J ESSE SMITH.