US1646941A - Ash-sifter attachment for fire grates - Google Patents

Description

1 646 941 1927' L. s. TENENBAUM ASH SIFTER ATTACHMENT FOR FIRE GRATES Filed Dec. 8, 1926 2 sheets-Sheet 1 5 5. Enenba um (inmm i... S. TENENBAUM ASH SIFTER ATTACHMENT FOR FIRE GRATES Filed Dec. 8, 1926 2 Sheets-Sheet 2 1wc.nlfcv. Louis 5.Tenembaum Patented Oct. 25, 1927.

LOUIS S. TENENBAUIVI, GI RGCIEESDER, NEVF YORK.

ASI-I-SIFTER ATTACHMENT FOR FIRE GRA'IES.

The object of this invention is to provide an attachment for fire grates by means of which the ashes from the fire box are automatically sitted while the grate is being shaken to clean the fire.

This and other objects 0t this invention will be tully illustrated in the drawings, described in the specification and pointed out in the claims at the end thereof.

In the accompanying drawings:

Figure 1 is a front elevation of a series otgrate bars with the ash sitter suspended underneath it and attached thereto.

Figure 2 is a vertical longitudinal section through the section of grate bars and the ash sitter suspended underneath it and connected thereto.

Figure 3 is a front elevation of a series of grate bars showing a modified form of connection between the grate bars and the ash sitter.

Figure 4 is a perspective view ot a moditied form of the ash sitter.

Figure 5 illustrates a modified locking bar for locking and unlocking the trap door in the bottom of the wire basket.

In the figures of the drawings like reference numerals indicate like parts.

In order to burn coal economically it is necessary to separate from the ashes the unburned pieces of coal that pass through the grate with the ashes. For this reason separate ash sitters are universally used through which the ashes taken from the grate are passed before they are finally thrown away. In these ash sitters the particles ot unburned coal are separated from the ashes proper so that the ashes can be thrown away and the coal used over again in the turnace or boiler. In the use of these ash sitters it is necessary to handle the ashes twice that is the'ashes are shaken through the grate and dropped intothe ash box from which they must be shoveled into the ash sitter and sitted. After this is done the ashes and coal must be separately shoveled from the separator and disposed of a second time.

The invention forming the subject matter of my present invention comprises an ash sitter that is directly attached to the grate bars and suitably connected thereto so that on the operation of these bars for the purpose ot cleaning the fire the particles of: unburned coal are separated from the ashes be- Serial No. 153,275.

tore the ashes have dropped into the ash 30X.

As illustrated in the figures of the drawand back from the grate bars 2, 2. F or this purpose suitable hooks 2-3, 3 are provided both at the front and back of the basket 1 which hooks are adapted to engage around the cylindrical portion of the grate bars so as to freely suspend the basket underneath them. To operate the ash sitter torntied by the basket 1 the swinging bar 4: is provided. This bar is suspended centrally ot the basket 1 near the rront thereof and its lower end extends through a slot 5 in the bottom of the basket 1.

The upper end of the swinging or rocking bar a has the links 6 and 7 pivotally attached thereto by means of which the bar is rocked as will presently appear. The outer ends ot the links 6 and 7 partially encircle the cylindrical portion ot a grate bar and are supplemented by a strap 8 that is suitably hinged thereon and is adapted to encircle the remainder of the grate bar which is then clamped to the link by a suitable locking bolt 9. A set screw 10 which is threaded into the strap 8 is then tightened against the grate bar in order to firmly lock the end of the link to the bar to make it swing on the rocking ot the grate bar.

. The rocking or swinging bar t is thus sus pended between two grate bars and on the rocking of either one ot them the link attaehed'thereto will rock the rocking bar in unison with it and transmit to the basket an oscillating motion which reciprocatesthe basket sideways. As the ashes drop through the grate bars into the basket they are shaken within the basket and are sifted as soon as they reach the basket. On shaking the basket the fine ashes drop through the wire mesh ot the basket while the larger lumps ot unburned coal ren'iain in the basket and accumulate therein. In this way the tine ashes are quickly separated from the unburned pieces 0t coal every time the grate is operated. The ashes thus deposited in the bottom of the ash bozr have theretore no further value and when shoveled out are ready to be put into the ash can. The coal within the basket on. the other hand may be ted back into the the box. "For this purpose the bottom of the basket is provided V V with a trap door 19 that is hinged at the rear of the basket on the inside.

The front of the trap door is provided with a hook 520 which is suitably hinged thereon so that it can be moved into or out of engagement with the upper edge of the basket 1. When engaging the basket as illustrated in Figures 1 and 2 the trap door 19 is held closed by the hook 20 so that the ashesthat accumulate therein are sifted as the basket is oscillated. When it is desired to remove the coal accumulated within the basket, the trap door is released by unhooking the hook 20 which allows the trapdoor to drop down into the dotted line position illustrated in Figures 1 and 2." The coal accumulated' in the basket the r slides out through the trap door and onto a shovel that may be placed under the basket 1 before the trap door is rele'asedf The basket 1 is mounted below the grates so that it can be readily and bodily detached from them if so desired, in which case the coal accumulated therein may be taken out from below thegrates in the basket and the basket emptied onto the shovel or into a suitable receptacle. After the basket is emptied it is again put in place underneath the grates.

In order to prevent the coal from dropping off on the-sides of the door a series of chains 21 and 22 is provided on each side of the door and connected to either the bottom orv top of the basket so that when the door is opened these chains form a flexible partition between the door and the basket that prevents any coalfrom dropping off the sides of the door.

Instead'of using chains 21 and 22 the trap door may be made as illustrated in Figure 4: in which triangular sides 23 and 24: are

'formed integral with the :door which move bars by means of suitable links it is attached directly to the grate barthat is oscillated; In this way the basket 1 is operated on the operation of the one grate bar. Y

In Figure 5 I have shown a modified form of the locking bar 25 for. locking the trap door in place in the bottom of the basket. This locking bar 25 may be used in place of the hook 20 and is swiveled at the bottom of the basket at the front end thereof. 7 By turning this bar the end thereof may be either withdrawn from under the door to allow the door to drop d-own for the purpose of emptying the basket or the end of the bar may be turned-to engage under the door after the basket is emptied and hold the door in place'in the bottom of the basket to allow morecoal to accumulate therein.

I claim:

1. In an ash sifter attachment for fire grates, the combination of a wire basket, means for freely suspending said wire basket below a series of grate bars a rocking bar, suspended from one of said grate bars and slidably engaging said basket, so as to shake said basket on the shaking ofthe grate bar. r p V 2. In an ash sifter attachment for fire grates, the combination of a wire basket, hook members supporting the front and back of said basket below-a series of grate bars, a rocking bar, a pair of links pivotally connected to the top of said rocking bar and projecting to either side thereof, eachof said links'being fastened to a grate bar, the lower end of said rocking bar engaging said basket to shakesaid basket on'the shaking of either one or the other of the grate bars having one of said links fastened thereto.

3. In an ash sifter attachment for fire grates, the combination of a wire basket, hook members for freely suspending said wire basket from the grate bars of said fire grate, means for horizontallyreciprocating said wire basket on the oscillation of one of said grate bars, a trap door hinged inrthe bottom of said wirebasket, and means for locking. and unlocking said trap door in the bottom of said wire basket.

4. In an ash sifter attachment for v fire grates, the combination of a wire basket, hook members for freely suspending said wire basket from the grate bars offsaid fire grate, a trap door hingedin the bottom of said wire basket, means for lockingand'unlocking said trap door in the bottom of said Wire basket, and means provided on the sides of said trap door to prevent particles of coal from droppingoff from the sides of the trap door on the release of said trap door.

'5. In an 'ash sifter attachment for fire grates, the combination of a wire basket,

freelysWinging hook members at the front and back of saidbasket adaptedto pivotally'engage the gratebars with one end and the wire basket at the other end to'xfreely' suspend said basket from a series of grate 'bars, said basket" having a hole therein, a

rocking bar adapted to be attached to one of the grate bars and having a sliding'en gagenient with the hole in said wire basket,

basket on the oscillation of the-grate bar, a

door pivoted in the bot-tonrof' said basket and sides provided on said door to connectthe door with the bottom of the basket when the door is'opened.

In testimonywherof I affix mysignature,

' r LOUIS S. TENENBAUM. 5

[said rocking bar reciprocating said wire 7,

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