US1256798A - Stove or furnace. - Google Patents

Description

H. HERMAN.

STOVE 0R FURNACE..

APPLICATION FILED 0CT.6. 191s.

Patented Feb. 19, 1918.

7.9%. MBW n BEBE VXWIAWI 0 Elk 5 7 F M3 2 4 M {WEE earn HYMAN HER/MAN, OF TORONTO, ONTARIO, CANADA.

STOVE 0B FURNACE.

Application filed October 6,

To all whom it may concern:

Be it known that I, HYMAN HERMAN, a subject of the Czar of Russia, and resident of the city of Toronto, county of York, Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Stoves or Furnaces, as described in the following specification and illustrated in the accompanying drawings, that form part of the same.

The principal objects of this invention are, to facilitate the proper cleaning out of the lower portion of a fire retaining the live coals securely within the fire pot and there by effecting a saving in fuel while obtaining the maximum efficient results from the fuel.

A further object is to reclaim the unburnt or partially unburnt coals without the usual attendant inconveniences of sifting ashes, and to effectively prevent the escape of dust from the stove in the shaking of the grates.

The principal features of the invention consist in the novel construction and arrangement of parts, whereby supplementary grate members are temporarily projected into the fire to sustain the upper portion of the fire while the grates are operated to release the lower portion and whereby the cinders are separated from the ashes coincident with the operation of the grates.

In the drawings, Figure 1 is a perspective view of a stove constructed in accordance with this invention having the forward portion of the enter on sing surrounding the fire box and ash pit removed.

Fig. 2 is an enlarged vertical cross sectional view through the fire box and ash pit showing the application of this invention.

Fig. 3 is a central longitudinal sectional view of the fire box.

Like numerals of reference indicate corresponding parts in each figure.

In the use of ordinary forms of rocking, shaking or revolving grates the fire is entirely supported upon the moving grate members and when the grate members are turned a sufficient distance to allow partially burnt or dead coals, clinkers, etc, to pass through, a considerable quantity of live coals from the upper and active part of the fire are passed through with the others and the entire fire is disintegrated and a considerable percentage of dead material is still retained on top of the grates.

In the carrying out of the present invention I provide supplementary grate mem- Specification of Letters Patent.

. Patented Feb. 19, 1918.

1916. Serial No. 124,179.

bers which are here shown as a plurality of curved fingers 1 connected together at their lower ends to the bars 2 and these bars are supported by the. arms 8 secured to the shafts l extending longitudinally of the stove or furnace, below the fire box being journaled at the ends in suitable supports.

. The sidewalls 5 of the fire box 6 are formed with perforations 7 through which the upper ends of the curved fingers 1 ex tend and upon the rotation of the shafts ithe fingers are projected inwardly into the fire box and meet centrally thereof to form a support for the upper portion of the fire.

The grate bars 8 which are here shown of tie revolving type but which may be of any desirable form are journaled in suitable supports and in the usual manner and arranged at the bottom of the fire box and below the path of the curved fingers 1 when said fingers are moved to their inner positions.

The grates are preferably operatively connected to operate in unison by means of the gear wheels 9 and the shafts a supporting the curved fingers 1 are operatively connected at the ends by means of the gear segments 10 so that upon the operation of one of the shafts the other shaft will be moved in unison therewith. One of t 10 shafts 4i projects outwardly and is formed with a squared end to receive a shaker or operating lever as also is one of the grate bars 8. These shaker ends are adapted to project through suitable openings in the outer casing of the stove closing in the fire box and ash pit.

When it is desired to clean out the lower portion of a fire, the shafts i are rotated to move the curved fingers 1 upwardly and inwardly so that the ends project into the fire and meeting centrally provide a support for the upper portion. The shafts i may then be locked or they may be so designed toremain in their upward position without locking and while the fingers are in the raised position the grates 8 are operated to release the cinders, ashes and clinkers from the lower part of the fire box. These grates may be operated to thoroughly clean out the lower portion of the fire and as the upper live portion of the fire is being sustained by the curved fingers 1, there will be no loss of the active portion. When the lower and burned out portion of the fire has been cleaned the grates are adjusted to their normal position and the curved fingers 1 are then Withdrawn allowing the fire to settle down upon the grate surface. A completely fresh fire is thus obtained.

During the operation of shaking the ashes and cinders from the lower section of the fire the ashes in falling are intercepted by a sifter member 11 which is suspended at one end upon a rocking lever 12 and at the other end upon a suitable pivotal support 13.

The lever 12 is pivoted intermediate of its length upon a cros bar 14 and the upper end is operatively connected with one of the operating genre 9 of the grate bars 8 through a pivotal link 15, consequently as the grates are rocked or revolved the lever 12 is swung upon its pivot and the sifter member is oscillated. The sifter 11 is in the form of a pan with an open bottom having a screen 16 extending longitudinally thereof and sloping from the upper rear end to the lower for- Ward end and an opening 17 is arranged at the forward end. The ashes are sifted through the screen and fall into an ash pan 18 arranged in the ash pit and the cinders roll down the inclined surface of the screen and pass through the opening 17 into the cinder pan 19. The partiallyburned portions of the fuel are thus saved and the pan may be removed when desired. The ashes deposited in the ash pan are not disturbed but are removed in the pan, consequently the whole operation isrendered extremely cleanly.

In order to provide for the escape of the dust of the fine ash rising during the sifting or shaking operation, I provide a flue shown in dotted lines in Fig. 3 leading from the with the main smoke provided to close the except when the grates ash pit and connecting flue, a damper 20 is openings to thi flue, are being shaken.

Thedevice is here shown as applied to a stove but it will be understood that the same can be readily applied to a furnace. The

necessary changes being only a matter of mechanical design.

What I claim as my invention is 1. In a stove or furnace, the combination with the firebox and grates, of apair of supplementary grate members pivotally supported below the firebox and having upwardly curved finger adapted to be projected inwardly from each side of the firebox above the grates, and means for operating said supplementary'grate members in unison and independent of said grates.

2. A stove or furnace having the firebox formed with perforations in the side walls, shaking grates closing the bottom of the firebox, supplementary grates pivotally supported below the firebox at each side and having upwardly curved fingers adapted to be projected through said perforations into the firebox above the grates to support the fire during the operation of the grates, means for operating said supplementary grates independent of the shaking grates to move inwardly and outwardly in unison.

3. In a stove or furnace, a firebox, grates closing the bottom of the firebox, a pair of shafts journaled at the ends and extending longitudinally below the fire box, radial arms secured to said shafts, bars connecting the ends of said arms and having angularly disposed arc-shaped fingers arranged thereon and extending upwardly through the side walls of the firebox and adapted to project inwardly above the grates, means for shaking the grates, and means for operating said supplementary grates in unison and independent of themain grates.

4. In a stove or furnace, in combination, a firebox, a shaklng grate, means adapted to support'the upper portion of the fire durin the operation of the shaking grate, a sifter supported at one end below the shaking grate upon a fixed pivot, aleverpivotallv supported intermediate of its length and pivotally connected to'the opposite end of said sifter, and a link connecting the upper end of said lever tosaid shaking grates.

HYMAN HERMAN Copies of this patent may be obtained for five cents each, by addressing the (lommissioner of I'atents,

Washington, D. G.

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