US1324803A - Okeate - Google Patents

Description

R. e. DONALDSON,

GRATE.

APPLICATION FILED JULY 23, |913.

1 ,S24-803. Patented Dec. 16, 1919.

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'v www R. '6. DONALDSON.

GRATE.

APPLICATION FILED IULY 23.1918.

1,324.,803. Patented Dec. 16,1919. I

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//Y vf/v TOR 6. a/vams o/y R. G. DNALDSON.

CRATE.

lAPPLICATION FILED JULY 23,1918.

1,324,803'. Patented Dee. 16, 1919.

, State of Ohio,

ROY G. DONALDSON, OF CESTLINE, OHIO.'

GRATE..

Application filed July as, 1918.

To all whom t may concern.' v

Be it known that I, ROY G. DONALDSON, a citizen of the United States, residing at Crestline, in the county of Crawford and have invented certain new and useful Improvements in Grates, of which vthe following is a specification.

My invention relates to improvements vin gra-tes, adapted for the like. Y l

An important object of the invention is to provide a grate of the above mentioned character, having means to properly shake the coal, e'ectively slice or break up clinkers, and discharge the lclinkers from the iirebox. Other objects and advantages of the invention will be apparent during the 'course of the following description.

ln the accompanying drawings forming a part of this specication and which like numerals are employed to designate like parts throughout the s ame,

Figure l is a plan view of bodying my invention,

` Fig. 2 is a longitudinal sectional view taken on line 2-2 of Fig. 1, Y Fig. 3 is a transverse sectional view on line 3-3 of Fig. 1,

Fig. 4L is a similar view taken on line els-4 of Fig. 1,

Fig. 5 is a perspective view of one of the movable side grate members,

Fig. 6 is a similar view of the central movable grate member, Y

Fig. 7 is a fragmentary perspective view of a stationary transverse grate member, Fig. 8 is a similar` view of a stationary longitudinal grate member, and,

Fig. 9 is a perspective view of a Slicer blade. In the drawings,wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 10 designates a horizontal preferably rectangular frame having a'pair of longitudinal coal discharging hoppers 11 arranged therein. These hoppers are stationary.

apparatus em taken Each hopper, as shown in Fig. 3, embodiesk upwardly diverging discharge passages 12. The space between the upper ends of these passages l2 is covered by longitudinal horizontal grate sections 13. Arrangedat spaced intervals between the longitudinal grate sections 13 are transverse grate secspecifieatian of Letters Patent.

use in connection withrailway locomotives, stationary boilers or' Patented Dee. 16, 1919. Lserial No. 246,362.

tions 14, shown more clearly in Figs. 1

Beneath the transverse grate sec-` and el. tions 14, the hoppers '11 have their lower endsclosed or covered by deiiectors 15having inclined upper faces 16.V Openings 17 are formed in the opposite side walls of the diveiging passages 12 and permit of the ashes ort-he like passing therethrough into the ash-pit.

Traveling longitudinally of and Ybeneath each discharging hopper 11 is an`4 endless coal or fuel conveyer 18, having feeding elements or drags '19, tofeed the fuel forwardly.4 The fuel is delivered into a hopper 20, and carried by the conveyer into the passages 12 and is forced upwardly' through the saine, to be fed upon the grate members. As no claim is made to the feeding mecha` nisni' per se `in this application, no detailed description of the saine is given, such feeding mechanism being shown and in my copending application for Stoker, i'iled July 246,363.

Extending longitudinally and centrally of the frame 1 0 is a central cleansing and agitating apparatus embodying alongitudinal shaft 21, suitably secured to the ends of the frame 10. lounted to turn upon this shaft are cleaning elements 22, arranged in end to end relation. Each cleaning' element, as more clearly shown in Fig. 6, embodies a sleeve 23, pivotally receiving the, shaft 21. This sleeve extends upwardly in the form of a tapered blade 24. Extending laterally upon opposite sides ofv the blade 24: are spaced gers or bars 25 yand 26,v

underfeed vthe flanges 26 having upwardly extending angularv projections 27, formed thereon. Each'flnger 26 is further provided with depending re retaining or supporting element 28, preferably tapered, as shown.

Arranged near and upon opposite sidesv` of the central cleaning apparatus are stationary grate sections29. As clearly shown in Fig. 1, each grate section 2 9 embodies sets of inwardly projecting barsor fingers 30,' the inner ends of the bars in the two sets being spaced for tudinal opening 31. Th's longitudinal opening is adapted for the reception of swinging slicer blades 82, which is curved iny transverse section, as shown. The Slicer blades^32 Yare provided at their ends withV cranks 83, pivoted tothe grate sectionsV 30,

described v23,' 1918, Serial No.

providing a longih a bell-crank lever as shown at 34. in operation, the slicer blades 32 are simultaneously swung inwardly, thereby cutting into the clinkers which may have formed', while the cleaning element 22 is swung upon its pivot, serving to coact with the slicer blades to break up the clinkers. rlhe fire retaining elements 28 are swung upwardly simultaneously blades, to prevent the coal and clinkers from improperly falling from the grate. These fire retaining elements' in their elevated positions form ash and clinker receiving pockets which, upon the movement of these elements to their lower positions, discharge the ash and clinker contained in such pockets. As is clearly shown, the grate sections 29 are transversely inclined and ex tend downwardly from the hopper 1l.

Arranged upon the outer sides of the troughs l2 are side. cleaning apparatuses, each of which comprises inner stationary Gra-te sections 35, embodying short and long ransverse bars or fingers 3G and 37. rIhe rate sections may be attached to the oi oes 1L arranged outwardly of and tne grate sections are coacting cleaning elements 38, three of which constitute a unit. Each cleaning element 38 embodies aA sleeve 39, mounted to' rotate upon a. horizontal longitudinal shaft 40 suitably secured to the frame 10. Extending inwardly from the sleeve 39 are clinker bars 4l, having lower faces 42, which lare curved', as shown. rhe sleeve 39 carries outwardly extending bars or fingers 43, which are angularly arranged, as shown.

llxtending longitudinally of the frame l0 and upon one side thereof is a rock-shaft 44, turned by means of a gear 45, driven by any suitable means. lligidly secured to the rockshaft 44 and depending therefrom are cranks 46, three in number, corresponding to the different units of the apparatus. ln connection with each unit there is a transverse reciprocatory pitman 47, having pivotal connection with a link 48, pivoted to the lower end of the crank 46. At its center, the pitman 4"? is provided with an upwardly extending projection 49, carrying a pin or bolt 50 operating in a slot 5l, formed in a crank 52 rigidly secured to the sleeve 23 of the central cleaning element.

This central cleaning element also serves to operate the corresponding pair of slicer bars 32. ivotally connected with one end of each slicer bar is a link 52', as shown at 53. @ne link 52 is pivotally connected'with 54, as shown at 55, while the other link 52 is pivoted to a bell-crank lever 56, as shown at 57. The bell-crank lerer 54 is pivoted at 58 and the bell-crank lever is pivoted at 59. A link 60 is -pivoted to the bell-crank lever 56 and with the upstanding arm of the bell-crank lever54,

with the movement of the slicery as shown at 6l. At its upper end the bellcrank lever 54 carries a laterally extending pin 62, arranged between lugs 63 and 64, formed Vupon the sle ve 23. It is thus apparent that when the sleeve is turned clockwise the lug 63 will contact with the pin 62 thereby swinging the bell-crank levers 54 and 56Y upon their pivots and forcing the Slicer blades 32 upwardly and inwardly. When the sleeve is turned in the opposite direction the lug 64 returns the slicer blades to the lowered position.

At its right end, the pitman 47 has pivotal connection with a link 65, pivoted to a depending crank 66, rigidly secured to the sleeve 39. At the left end, the pitman 47 has pivotal connection with a bell-crank lever 67, pivotally supported at 88. The bell-crankrlever 67 has pivotal connection with the link G9, pivoted to a crank 70, rigidly secured to the sleeve 39 of the left side cleaning element. lt is obvious that the side cleaning elements are swung simultaneously in opposite directions.

The'operation of the appara-tus is as follows:

The coal is fed into the hoppers 20, and is carried by the conveyors 18 into the passages l2 of the troughs and fed upwardly upon the grate members, where combustion takes place in the usual manner. When it is desired to shake the grate, the shaft 44 is rocked. rhis movement of the shaft causes the central and side cleaning apparatuses to operate. Tv/Vhen the shaft is turned sufficiently in 'a clockwise direction, the slicer bla-des 32 are forced upwardly and inwardly, which tends to break up or slice clinkers accumulating in proximity thereto. lilith this movement of the slicer blades, the shaft 2l is turned and the projections or teeth 27 cut or break ofi' the clinker, operating in conjunction with the slicer blades and discharge the same from the grate, through the open ingV occurring at the right, at the cleaning element, the retaining elements 28 being then elevated and serving to support the re and prevent the coal from improperly fallingy from the grate.

Simultaneously with this movement of the slicer blades, the side cleaning apparatuses are operated. The members 41 are swung upwardly and outwardly and the straight edges thereof serve to cut or pinch olf elinkers which may be formed in proximity thereto, discharging the same from the top of the gra-te, through the opening occurring at the outer sides thereof, the curved surface 42 of these elements serving to supportthe coal and prevent the discharge of the same.

Itis to be understood that the form of my invention herewith shown and described is to be taken as apreferred example ofthe `Y same, and that various changes in the shape, size, and arrangement of parts may be reiio sorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In a grate of the character described, the combination with a pair of relatively stationary versely inclined with respect to the grate and extend downwardly toward their inner edges and have longitudinal openings formed therethrough, of cleaning apparatus arranged between and near the inner lower edges of the inclined grate sections and provided with upwardly extending projections which are disposed to coact with the inner lower edges of the grate sections for breaking up the clinker, means for turning the cleaningl apparatus upon its longitudinal axis, transversely curved Slicer-blades pivotally supported outwardly of and near the grate sections and arranged to move within the longitudinal openings of the same, said Slicer-blades being adapted to assume an upper position whereby they project above and across the inclined grate sections and are spaced from the cleaning apparatus, the inner edges of the Slicer-blades being then spaced, and means to swing the Slicer-blades upon their pivots.

2. In a grate of the character described, the combination with a pair of relatively stationary grate sections which are spaced and transversely incline with respect to the grate and extend downwardly toward their inner edges and have longitudinal openings Y formed therethrough, of cleaning apparatus arranged between and near the inner lower edges of the inclined grate sections and ncluding upwardly projecting members for coaction with the lower edges of the ingrate sections which are trans-VV clined grate sections for breakingA up the clinker, supportingelements arranged at an angle to the teeth and adapted to assume a position between the inclinedv grate sections to prevent the improper discharge of the fuel, means to turn the cleaning apparatus upon its longitudinal axis, transversely curved slicer-blades pivotally supported outwardly of and near the inclined grate sections and arranged to move within the longitudinal openings of the same, said Slicer-blades being adapted to assume an upper position whereby they project above and across portions of the inclined grate sections and are spaced from the cleaning apparatus, the inner edges of the slicerblades being then spaced, means to swing the Slicer-blades upon their pivots.

8. In a grate of the character described,

the combination with a pair ofspaced rela- 5 tively stationary grate sections which are transversely inclined with respect to the grate and extend downwardly toward their inner edges and have longitudinal openings formed therethrough, of cleaning apparatus arranged between and near the inner lower edges of the inclined grate sections and adapted to coact with such inner lower edges in breaking up the clinker, means for turning the cleaning apparatus upon its longitui dinal axis, Slicer-blades adapted for move# ment within the longitudinal openings of the inclined grate sections and adapted when shifted to the upper position to be disposed above and spaced from thecleaning apparatus and serving to cut 0E the clinker and prevent its upward movement by the turning of the cleaning apparatus, and means to move the slicereblades.

In testimony whereof I aix my signature.

ROY G. DONALDSON.

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