US384409A

US384409A - Grate

Info

Publication number: US384409A
Authority: US
Publication date: 1888-06-12
Anticipated expiration: 1905-06-12

Description

(No Model.) L. Ml WOODCOGKI 3 Sheets-Sheet l;

` GRATE. No. 384,409. Patented June 12, 1888.

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`(No Model.) 3 sheets-sheet 2 L. M. WOODCOCK.

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No. 384,409. 4 Patented June 12, 1888.

. (No Model.) 3 Sheets-Sheet 3.

L. M. WooDGooK.

GRATB.

N0. 384,409.. Patented June l2. 1888.

- Fig. 2 is a side elevation.

NiTEn STATES PATENT ERICE.

LEONARD M. woODcooK, OE AUBURN, NEW YORK.

GRATE.

SPECIFICATION forming part of Letters Patent No. 384,409, dated June 12. 1888.

Application filed June 14. 1887.

To all whom, it may concern:

Be it known that I, LEONARD M. WOOD- co'cK, a citizen of the United States, residing at Auburn, in the county of Cayuga and State of New York, have invented certain new and useful Improvements in Grates; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same.`

My invention relates to furnace-grates; and it consists of certain improved constructions which greatly facilitate the shaking and dumping of the same.

The following specification and claims, reference being had to the annexed drawings, fully disclose my invention.

In the drawings, Figure 1 is a plan View. y Figs. 3 and 4 are side elevations of the grate-bars and connecting devices. Figs. 5, 6, 7, and 8 are detail views of different parts of my invention. Fig. 9 is a sectional view on line yy, Fig. 7, showing the position of the parts when the gratebars are looked. Fig. l() is a like sectional view, with the shakerf in position for shaking the grate and holding back the lock. Fig. 11 is a front view of the shaking-lever andloek, the latter being in position to limit the movement of the grate-bars. Fig. l2 is a similar View, but with the lock retracted to allow the grate to be dumped.

Similar letters of reference indicate identical parts throughout.

The construction of the frame A and the arrangement of the grate-bars B Bis substantially the same as the construction and arrangement of the corresponding parts in my United States Patent No. 359,120. The frame shown is of rectangular form, andthe gratebars are journaled therein in the manner shown in said patent. Each grate-bar has a downwardly-depending arm, D, and said arms are connected to aconnecting-bar, D, so that such bars move in unison to shake the grate for the removalofashes or cinders or for dumping the same.

`To the front of the frame A is secured a bracket, C, provided with openings a. Firml y secured to this bracket is a casting, C. These parts are similar to the corresponding parts Serial 1510.241266. (No model.)

in my said patent. To the bracket C is pivoted-the arm E, which in its normal position lies against the face of the casting C. The lower end of this arm is connected byarod, Z), with the connecting-bar D. These parts are also similar to the like parts of my patent hereinbefore referred to.

To the side of the casting C', opposite the arm E, is pivoted the lock c. (Best shown in Fig. 8.) This lock has iianges c c', which cxteud on either side of the lower portion of the casting G, and also on either side ot" the arm E, and the same is brought into a vertical position against the face of the casting, all as shown in my former patent. In addition to these locking-flanges, the lock cis provided near its upper end with arms extending outwardly on each side. These arms at their outer extremities are provided with lugs x x, as shown in the drawings.

The arm E is provided at its lowerend with the lugfand the groovef'l, and the shaker is provided on opposite sides with lugsfs. The arm Eis also provided with two openings, o of, tO receive the end ofthe shaker.

It will be seen that when the parts are in the normal position, 'as shown in Figs. 3 and 9, the arm E and the grate-bars are locked in position and are prevented from accidental displacement.

lVhen it is desired to agitate the grate-bars, the shakerfis inserted in one of the openings o o and turned until one ofthe lugs f enters the groove f2 and engages the lugf, and the other lug ot the shaker raises the lock c by bearing against the inner face ot the outer flange,c, until the hanging arm E is released and can be moved back and forth to agitatc the the grate bars. The movement of these bars is limited and the grate kept from tipping too much by the arm E coming in Contact with the lugs x Vhen it is desired to tip the grate to dump it, the lock c is retracted until the lugs x x can no longer engage the arm E, but allow it to swing past. This lever E and its support can be located either inside of the ash-pit or can be located outside of the same and outside of the furnace, as preferred. The two openings 0 o are for the purpose of adapting the device to different boiler-fronts.

Instead of the device shown and described,

IOO

I can luse that best seen in Fig. 4. A grate-bar is provided with an extension,F, which I prefer to provide with twosplines, but which may be polygonal or of any form so as to allow' the sleeve F', which is made to fit it, to have an independent longitudinal movement, but will rotate with it. rlhe inner face of the sleeve F is shownin Fig. G,a portion being cutaway and the remaining edge, y, being slightly rounded.

Rigidly attached to the frame A is the projection G, so located that when the sleeve F is placed upon the extension F and moved close to the frame the lower face of the projection G will be immediately over and iu Contact with the upper face of the said sleeve, and these parts being'lin this position, it will be seen that the grate-bars cannot be moved. In order to agitato the gratebarsdhe sleeve F is retracted until the projection G is over the rounded or reduced portion g, which is somewhat lower than the upper face of the sleeve. In this position the bar may be turned until the projection G comes in contact with the extremities of the edge g. All of the grate-bars, being connected,are affected by the movement of one, and are therefore oseillated equally with the one provided with the extension and sleeve. Vhen it is necessary to empty the grate, the sleeve is retracted until entirely free from the projection G, when the bars maybe readily tipped to any extent.

Any desirable means may be employed to move the sleeve back and forth upon the extension or to rotate the grate-bar; but I prefer to use a shaker, h, one end of which fits in the opening p of the sleeve and passes on into an openingin the extension F. The latter opening is smallest at its lower extremity; hence if the shaker is inserted and then inclined to the position indicated in dotted lilies, Fig. 5, the sleeve is moved out of contact with the projection G, and the grate may then be shaken. By moving the shaker into a vertical position again the grate-bars remain fixed.

The grate-bars are the same in form as those shown in my said former patent, the lugs of the bars being placed opposite to each other and having their opposing faces of arc form. These lugs are of greater extent horizontally than vertically, and so long as the lugs are opposed to each other the space between them is not increased, and there is no grinding action on the materials supported by the grate. Vhen it is desired to dump the grate, the grate-bars are moved so that the ends of the adjacent lugs pass each other, forming dumping spaces between the bars. The stops for the shaking devices are so located that the ends of the opposing lugs of the bars cannot pass each other. rlhcse stops limit the movement of the shaking devices, so as to prevent the accidental dumping of the grate when shaking it to remove ashes, &c. They also, by preventing the ends from passing each other, prevent any grinding action upon the coal.

VhatI claim, and desire to secure by Letters Patent, is-

l. The combination, with a supporting frame and oscillating grate-bars connected for joint movement, of a lock for a movable part connected with said bars, the said lock being provided with stops located in the path of said movable part when unlocked, whereby the movement of said bars when unlocked is limited, substantially as described.

2. The combination, with a supportingframe and oscillating gratebars connected for joint movement, of a lock for a movable part connected with said bars, the said lock being provided with stopsloeated in the path of the movable part when unlocked, said movable partand said stopsbeing the one movable in relation to the other, whereby the movement of the bars for raking the fire when unlocked is limited and the limitation removed for dumping the grate, substantially as described.

3. The combination, with a supportingframe and oscillating grate-bars connected for joint movement, and a lever connected with said grate-bars and moving with them, of a hinged plate provided with stops normally in the path of said lever, the pivots of said 1ever and plate being at right angles to each other, whereby the movement of the said 1ever and grate-bars is limited in the operation of raking the fire, and the stops made removable by swinging the plate outward to effect the dumping of the grate, substantially as described.

4. The combination, with a supportingfraaie and oscillating grate-bars having opposing narrow lateral projections provided with curved ends, securing a. uniform space between the ends of said projections, the said bars being connected for joint movement, of stops located in the path of a movable part connected with said bars and holding said bars from entirely passing each other, whereby the movement of the grate-bars for raking the fire is limited to such a movement as will preserve the uniform distance between the grate-bars, substantially as described.

5. The combination, with a supportingframe and oscillating grate-bars having opposing lateral projections provided with curved ends, securing a uniform space between the ends of said projections, said bars being connected for joint movement, of a lever connected with said bars and moving with them, a hinged locking-plate provided with stops normally in the path of the said lever, but at a short distance from each side of the same, whereby the grate-bars are locked, when desired, and the movement of the same for raking the fire is limited to preserve the uniform distance between the gratebars, and the removal of the stops will permit the projections of the bars to be turned to such a position as to increase the space between the bars, substantially as described.

6. The combination, with a supporting- IOO frame and oscillating grate-bars Connected for actuating-bar is removed, substantially7 as de- 1o joint movement, of a lever connected. v With scribed.

seid grate bars and moving with them, a In testimony whereof aix my signature in hinged platte provided with looking projection s presence of two Witnesses.

5 and stops and an actuating bar or key with projections for` engaging the lever and ioek- LEONARD M W OODCOGK' ing projections of the plate, whereby the Vitnesses: movement of the lever and grate-bars :is lim- CEAS. OBRIEN, ited in raking the fire andloeked when the CHARLES E. KERR.