US1594392A - Grate - Google Patents

Description

Aug. 3 1926. 1,594,392

C. W. VOGT GRATE Filed Sept. 1, 1921 5 Sheets-Sheet 1 1,594,392 C. W. VOGT GRATE Aug. 3 1926.

Filed se t. 1, 1921 5 Sheets-Sheet 2 Aug. 3 1926. 1,594,392

. C. W. VOGT GRATE F 'iled Sept. 1, 1921 5 Sheets-Sheet 4 Aug. 3

GRATE Filed Sept. 1, 1921- 5 Sheets-sheaf; 5

nace. These side plates and 51 reach downwardly towards the back end of the furnace at an angle, so that the grate itself lies an angle as shown in Fig. 1.

Each of the units 49 includes a grate bar beam 52 in conjunction with grate bar sections 53 and end sections 54. The grate bar beam 52 has a series of sidewise projecting ribs which provide between them vertical channels or notches oppositely disposed in pairs. Each of the grate bar sections is provided with a vertical upwardly exten ing notch 57 which is adapted to embrace the central portion of the grate bar beam and seat between the flanges 55 and in the notches 56 and be thus held firmly in position. The upper portion of each grate bar section has a series of sidewise projecting bed forming teeth 58, so that the teeth of the adjacent sections come close enough together in order to prevent the loss of fuel direcly through the by forming a full supporting perforated grate bed.

The front portion of each grate bar section has an arcuate skirt 59 formed sub stantially on the arc of a circle about which the grate bar unit is rocked. These skirts of the consecutive grate bar sections effectively (re-operate to provide a practically continuous arcuate closure along the front face of the unit. This will eiiectively prevent the entrance of clinkers or large chunks of material beneath the grate bar units or between adjacent rows of grate bar units, and will also prevent unburned coal from dropping into the ash pit when the grate sections are rocked.

Each grate bar beam may be provided with a longitudinal extending opening 60 in its central portion which opening greatly enhances the cooling effect and will reduce warping of the beams by overheating. This is a very important point for the reason that if the beams should warp materially, the units would be thrown out of line and might thus interfere with proper rocking.

In order to lock the grate bar sections in place, they may be provided with side notches 61 adjacent to and herein shown communicating with the vertical notches 57 into which side notches may be inserted locking IOds or pins 62 as clearly illustrated in Fig. 1.

The end portions of the grate bar units are supported in rocking fashion with respect to the side bars 50 and 51. It is preferred that the pivotal supports for the grate bar units should be as close to their upper surface and as close to their rear edges as possible. This will permit the grate bar units when rocked to rise over practically the r entire surface. with a consequent backward movement, which will in itself greatly assist in transferring the fuel body downwardly and over the grate towards its back edge. At said back edge may be located a clinker plate 63 pivoted on the shaft a and normally held in raised position shown in Fig. 1, but which may be dropped downwardly into the dotted line position of said figure in order to discharge the clinkers.

In order to pivot the grate bar units in the manner above explained, and at the same time secure more strength and interchange ability in the parts I have provided the end 1 units which are shown in detail in Figs. 10, and 12. Each of these end units has an inside rectangular socket 65 which is adapted to receive the adjacent end 66 of the grate bar beam to which it may be locked by means of a pin 67. Each of these end sections may be provided with side teeth 68 and with a front skirt 69, similar to those already discussed in reference to the grate bar sections. Each of these end sections is provided in its upper rear corner with a sidewise projecting circular lug 70, which seats into a recess of the bar 50 or 51 as the case may be. By providing the end sections with these side lugs 70, it is possible to establish the p'votal points out of line from the grate bar beam, and at the same time provide great strength in the parts.

I wish to also point out that by providing acarricr bar 52 independent of the trunnion sections 54: the entire grate section need not be thrown away if an end section is burned out. Furthermore, the carrier bar 54 is at no point in direct contact with the fuel bed and the end or trunnion sections as well as the intermediate grate sections are all replaceable at a fraction of the expense that would be incurred in replacing an entire unit.

One of the end sections of each grate bar unit is provided with a downwardly extend ing arm 71 by means of which it may be rocked. These arms preferably extend rearwardly as shown in Jigs. l and 10 when the grate bar units are in the normal position; and by pulling the arms forwardly the grate bar units are tilted upwards. Ordinaily, he arms of the grate bar units may be coupled up in alternate groups as shown in Fig. 1. For this purpose, a bar 72 is provided with lugs 73 which are pivoted to the arms 71 of the alternate units, and another bar similar to the bar 72 may be coupled up to the intermediate grate bar units. The rocking levers 75 and 76 are pivoted to the front face of the furnace at the points 7'? and 7 8; and said levers are connected to the bars 72 by means of the links 79 in the manner illustrated in Fig. 1.

The clinker plate 63 may be operated in any suitable manner and I do not herein concern myself with the details thereof.

While I have herein shown and described only a certain embodiment of the features of my present invention, still I do not limit myself to said embodiments except as I may so do in the claims.

I claim:

1. A readily detachable and renewable lurnace grate including in combination a pair of spaced and inclined side supports having spaced bearings therein, a plu 'ality of grate bar units each pivotally mounted in said bearings, adjacent units being rockable independently, each unit comprising a supporting beam, aplurality of independent intermediate notched sections straddling said beam and each including a substantially arcuate 'lace extending upwardly and forwardly of the beam, and a pair of complementary independent end sections receiving the ends of said beam and each including a side- Wardly projecting pivot positioned substan tially in proximity to the upper and rear corner and seated in a side support bearing.

2. A device as defined by claim 1, Where'- in each exterior section is characterized by an arcuate face similar to the intermediate Sections tor completing the grate and maintaining a' substantially closed grate for substantially the full Width of the furnace.

3. A device as defined by claim 1, Wherein the beam is characterized by a longitudinal aperture for securing substantially uniform expansion throughout.

4. A device as dehned by claim 1 characterized by each section being provided With a notch in the edge of its beam receiving portion the beam being suitably termed adj ament said portion and notch to coact with the same, and a common locking member seated in said notches for securing all of the sections to the beam.

5. A device of the character described in claim 1 characterized by each grate section including a central plate terminating in an arcuate skirt, and a grate forming portion comprising aterally extending projections upon each of said plates, adjacent sections upon adjacent beams being positionable in close proximity to each other, whereby a substantially continuous but ioraminated grate bed is secured Which extends substantially the full length of the grate.

6. A device of the character described in claim 1 characterized by each grate section including a central plate terminating in an arcuate skirt, and a grate forming portion comprising laterally extending projections upon each of said plates, adjacent sections upon adjacent beams being always positionable in close proximity to each other whereby a substantially continuous but foraminated grate bed extends substantially the full length and Width of the grate and at all times and for all positions of the grate sections.

CLARENCE W. VUGT'.

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