US1909599A - Automatic ash screen and sifter - Google Patents

Description

May 16, 1933. J. A. wlLEs AUTOMATIC ASH SCREEN AND SIFTER Filed Jan. 5, 1931 \\\\\\\\\\&

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BY :6 MVM w A TTORNEV Patented May 16, 1933 [UNITED STATES'v PATENT OFFICE v.TAlVLES vA. WILES, F HAMILTON, OHIO, ASSIGNOR, BY DISTRIBUTION 0F COURT,

MABEL F. WLES, WIDOW 0F SAIDr JAMES A.. wWILES, DCEYCEASEDV yAU"1O1VIA'1IC SCREEN AND SIFTER Application led January 5, 1931.

` My invention relates to new and useful improvements inv ash screens and sifters for boilers, furnaces and the like.

The principal objectl of my invention is to provide a means for separating thevpartially burned coal or coke from the line ash p and its collection in a separate container so that it may be easily replaced in the combustion chamber.

It is another object of my invention to provide means for `raising the separator screen to permit removal of the fine ash from under it and the automatic dropping of the separator screen upon closing the ash pit door.

It is an important object of my invention to provide means for attaching my device to domestic heating devices without alteration or machine operation, thus making its installation simple and economical.

Other important and incidental objects of my invention will be brought out in the annexed speciiicationand the subjoined claims. A

In the accompanying drawing, Figure' 1 is a sectional planview taken through a circular heater taken below the lire bowl andl upper grates. vFigure 2 is a sectional View taken on the line 2-2 of Figure 1, showing the separator screen raised in full lines and in the lowered position in dotted lines. Figure 3 isa sectional plan view taken through a heater having a rectangular fire box taken below the main grates. Figure 4L- is a detail view of the separator screen pivot means employed in the device shown in Figure 3.

And Figure 5 is a detail view of the sepa' rator screen support employed in the device shown in Figure 3.

The application of my invention to a heater having a circular fire pot will first be described.

Referring to the accompanying drawing,

the numeral 1 designates the ash pit casting having a circular rear portion 2 whose one side is open and from which are forwardly extending parallel sides 3, 3.

rIhe parallel sides at their open ends terminate in a casing 4 to form the enclosing wall for the ash pit 5.

with the sides 3-3 The open end is serial No; 506,564'.

closed ina conventional door 6.

Within the rear portion 2 of the ash pit casting is a semi-circular supporting ring 7 resting upon the bottom 'or floor of the ash* it. The ring 7 has .attached thereto two vertical bars 8 8, substantially in alinement and atthe rear `of .the ash pit casing.v Y'

Each bar 8 receives in a threaded holel near its upper end an upwardly turned v.L shapedZ pin 9, to receive between it and the top of the bar, the downwardly turned yflange or frame 10 of a perforated separator screen The screen 11 has essentially tvvol semicircular portions 12-`13, each 'encircled by the frame 10 and provided with aflongitudinal support 14 and a transverse support 15A between the support 14: and the frame* (See Figis raised their upper ends will strike the grate and thus limit the upward movement vof the screen.

Two pins 21-21 are received by the front flange 10 of the screen 11 so that whenthe screen is tilted, the pins will rest on the top edge of a container 22, positioned on the ring 18 when the ash door is closed.

Now when the ash door is closed thering 18 is forced inwardly by the contact of thehandle .1Q-and the door 6, andthe links 16-16 will be inclined at an acute angle with the floor and the Ifront of the screen 11 will drop down until the' pins 21--21 rest on the edge of; the containerA 22, as"

manner by an ash lowering of the screen.

`cated by full lines.

indicated by the dotted lines. (See Figure 2).

The line ash will drop through perforations 23 in the screen 11 and the partially burned coal or coke in small lump form will roll down the inclined screen and into the container 22 from which they may be removed and used as fuel.

The perforations are inclined to permit the use of a rake or hoe like tool without the latter becoming caught in the perforations if placed laterally.

When it is desired to remove the fine ash that has fallen through the screen, the ash door is opened and the handle 19 is pulled 'outwardly to raise the screen until the stop bars 20-20 strike the grate above as indi- (See Figure 2). The

' container is then removed and the fine ash may be easily raked out.

In order to facilitate the assembly of the screen halves 12-13, I have provided connector bolts 24--25 that engage the adjacent `center flanges 10 of the screen halves.

The flange 10 of the screen 12 at the bolt 24 is provided with a slot 26 so that when the two halves are placedil on the pins 9, 9, with the bolt 24 previously inserted in the frame -`10 of the screen 13 with the nut placed loosely on it, the two flanges may be broughtto- `gether and the nut tightened up. The forw ward bolt may then be easily inserted.v

A My device is equally adaptable to a heater i. having a rectangular lire box and ash pit,

wherein I employ a separator screen 27, simila-r to the screen 11 but of one piece and having a downwardly extending flange 28 y to' which the same tilting means previously f described is attached.

In order to support the rear of the screen,

. Inemploy an eXpansible bar 29 having hardl. ened steel pointed ends 30, 3() that engage the side walls 31, 31 of the ire boX. The

bar 29 is composed of two halves 32, 33 and has a reduced threaded end 34 where it passes through a center support 35 of the screen 27 and is received by a tapped hole 36 in the adjacent end of the bar 33.

I wrench. When the halves 32, 33 are unscrewed, the points 30, 30 will embed themselves in the side walls 31, 31 and provide a solid support for the screen. l ures 3 and 5.)

(See Fig- Attached to the flanges 28 immediately above the bar 29 are two plates 38, 38 having a depending rear portion 39 that passes behind the bar 29 to effectively prevent its forward movement during the raising and (See Figures 3 4 `and 5.) b 7 Having described my invention, I claim:A

1. A device ofthe type described, including a grate and an ash pit, a vertical support in the rear portion of the ash pit, a screen pivoted at its rear portion to the vertical support beneath the grate, a longitudinally movable member in the bottom portion of the ash pit, an unburned fuel container resting upon said longitudinally movable member, and link bars pivotally connected between the front portion of the screen and the longitudinally movable member whereby, when the latter is moved inwardly, the front end of the screen will be lowered to deliver the unburned fuel into the container.

2. A device of the type described, including a grate and an ash pit, a vertical support in the rear portion of the ash pit, a screen pivoted at its rear portion to the vertical support beneath the grate, a longitudinally movable member in the bottom portion of the ash pit, an unburned fuel container resting upon said longitudinally ,mov-` able member, link bars pivotally connected between the front portion of the screen?, and the longitudinally movable member, a shift ring secured to the front portion of the longitudinally movable member, and a'handle;` on the shift ring whereby when the handle is pushed inwardly, the front end of the screen will be lowered to deliver the unburnedfuel into the removable container while the line ash drops through the screen into the ash-- pit. vf

3. A device of the type described, incl-uding a grate, and an ash pit, an expansible bar secured between the rear side wallslof the` grate, a rectangular screen.' pivotallyi-S,

supported at its rear end upon said-bar, a longitudinally movable memberv .in lthe .bottom portion of the ash pit, an unburned fuel container resting upon the front part of said longtiudinal member, and link balsapivotally connected between the front portion of the screen Iand the longitudinally movable member.

In witness whereof I have hereunto set my hand this 3rd day of January, 1931.

JAMES A. winne.l

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