US1368164A - Traveling grate - Google Patents

Description

L. W. KLEIN.

TRAVELING GRATE.

APPLICATION FILED DEC. 23. 1918.

1,368,164. Patented Feb. 8, 1921.

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LOUIS W. KLEIN, OF IPO'ITSVILLE, PENNSYLVANIA, ASSIGNOR 130 THE GOXE TRAVEL- ING GRATE COMPANY, OF PORT G ARBON, PENNSYLVANIA, A CORIPORATION OF PENNSYLVANIA.

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Application filed December 23; 1918.

1 0' all to item, it. may concern:

Be'it known that 1, Louis V7. KLEIN, a citizen of the United States of Americmresiding at Pottsville, in the county of Schuylkill and State of Pennsylvania, have invented certain new and useful Improvements in Traveling Grates, of which the following is a specification.

My invention relates to traveling grates and particularly to the grate bar; the object of my invention being to provide im proved means for securing in position the end key, or top plate of the bank carried by the grate bar.

In the accompanying drawing- Figure 1 is a broken plan of portion of a grate bar illustrating one embodiment of my invention.

Fig. 2- is a transverse section through the grate bar.

Fig. 3- is an elevation partially in section thereof.

Fig. l is a side elevation of oneof the grate bar keys.

Figs. 5 and 6 respectively, are plan and side elevation of a modified grate bar key,

Fig. 7- is an elevation partially in section of a grate bar illustrating the embodiment therein of the modified construction shown in Figs. 5 and 6.

In traveling grates of the type to which the present invention relates, it is customary to provide transverse grate bars, the opposite ends of which engage the side supporting and traveling chains of the grate.

Between the ends of the bar extends a web on which is carried a bank of top plates or grate bar keys upon which the fuel bed directly rests. The keys are usually held upon this web by means of a dove tailed rib extending the length of the web and upon which the keys are engaged by means of dove tailed recesses in their lower edges. In order to thread the keys upon the dove tail, it it necessary to interrupt the latter at some point, so that the notches in the lower edges of the keys may be brought into alinement with the dove tail on the web. The point of interruption in the dove tail has ordinarily been located at one or both ends of the web. To complete the key bank at these points the end key or keys have been carried by a bolt with dove tailed head engagaing the notch in the key, while the shank of the bolt passes through the web Specification of Letters. Patent.

Patented Feb. 8, 1921.

Serial No. 267,958.

of the grate bar and is engaged beneath the latter by a nut. This method of securing the key is unsatisfactory since the nut is diflicult of access when the grate is installed and in operation, and such repairs as must be made from time to time in the key bank, frequently require a stoppage or a slowingup of the grate in order to allow the attendant suflicient time to remove the nut of the end key bolt, lift the latter from the bar, replace the worn outor defective keys of the bank and again adjust the end key with its bolt afterthe repairs are completed. By my present invention, I have provided an improved fastening means for the end key by which all operations are performed from the fuel supporting or outer face of the grate as the latter rounds the end sprocket thus facilitating the removal of the end key and expediting the repairs of the key bank where the latter has become defective.

- In Fig. 1, I have illustrated one end of a grate bar, it being understood of course that a like construction may be employed if desired on the opposite end, As here shown the bar comprises an end block 10 from which extends a depressed web 11 to the end block (not shown) at the opposite end of the bar. Upon the web is secured a dove tail rib 12 upon which the bank of keys is mounted. The lug 13 depending from the end block 10 is engaged in the usual manner by a link of one of the side carrying chains (not shown). As will be seen, the rib 12 terminates at a point spaced from the end block 10 a sufficient distance to permit the insertion therebetween of one of the keys 14 of the bank so that its dove tailed notch 15 may be brought into alinement with and slid upon the rib 12. The end key of the bank, which I have given the special numeral 16, is, according to the present invention, supported by a lock block having a dove tailed head 17 to engage the key 16, an anchor lug 18 and a connecting fin 19 uniting the head 17 and anchor lug 18. To receive the anchor lug I have here shown the end block 10 recessed at 20 from its upper face and slotted at 21 to accommodate the fin 19. The upper portion of the recess 20 is tapped to receive a screw plug 22, which in inserted position bears at its lower end against the anchor lug 18 and thus holds the block in position.

The manner in which this end key block is used is readily understood. The bank of keys 14. having been completed on the rib 12, the end key 16 is inserted upon the head 17 of the lock block while the latter is detached from the grate bar. The anchor lug 18 is then dropped down in the well 20, the fin 19 extendingthrough the slot 21. The size of the block is such that in inserted position its dove tail head 17, rests upon the web 11 in alinement with the dove tail 12 of the grate bar and holds the end key 16 in register with the keys 1 1 of the bank. The plug 22 is then inserted and screwed down flush or below the surface of the end block, thus holding the end key and its lock block rigidly in position. If it be desired to remove the latter, it is only necessary to unscrew the plug 22 and lift the end key with its associated carrier from the grate bar, thus again opening the space through which the keys 14 of the bank may be removed from the dove tail 12.

In the modification illustrated in Figs. 5,

6 and 7, I have dispensed with the lock block as anindependent element and have formed an anchor block 23 integral with the end key 24 to which it is connected by a fin 25. In this modified construction, the end block of the bar is recessed in precisely the same way as first described and the same 1 screw plug 22 is utilized.

Various other modifications will readily occur to those skilled in the art, which do not depart from what I claim as my invention. The underlying thought of the present invention is to provide some .means whlch are accessible from the outer or fuel supporting face of the grate by whlch the end key may be detachably secured in position thus eliminating the necessity for the attendant working through the spokes of the end sprocket when he desires to repair the key bank on the grate bar. As will be readily recognized, all operations which must be performed to release the keys, are accomplished from the fuel supporting face of the grate.

1. In a traveling grate, a grate bar having an end block, a key-supporting rib spaced therefrom, a bank of keys engaging said rib to secure the keys on the bar, a key arranged in the interspace between said end block and rib, and means detachably engaging said end block to secure said interspace key to the bar, said securing means being accessible from the fuel supporting surface of the tached.

2. In a traveling grate, a grate bar havgrate for being attached and deing an end block and an adjacent depressed key supporting web, said end block being recessed to form a well and a slot opening from said well to the space above the web, a grate bar key having a member'associated therewith and entering said well together with means operative from'the fuel supporting facfi of the grate to hold said member in the we 3. In a traveling grate, a grate bar having an end block and an adjacent depressed key supporting web, said end block being recessed to form a well, and a slot opening from said well to the space above the web, a grate bar key having a member associated therewith entering said well together with a screw plug entering said well from the fuel supporting face of the grate to hold said member in the well.

In testimony whereof I have signed my name to this specification.

' LOUIS W. KLEIN.

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