US1239514A - Stove. - Google Patents

Description

W. E. PERRYCLEAR.

STOVE.

APPLICATION FILED FEB. 21, I917. Lga gfimu Patenteds ept. 11,1917.

3 SHEETS-SHEET 1.

W-. E. PERRYCLEARJ STOVE. 1 28m APPLICATION man 8.21.1917.

Patented Sept. 11,1917.

3 SHEETS-SHEET 2.

W. E. PERRYCLEAR.

STOVE.

APFLICATION FILED FEB. 21. 1911.

Patented Sept. 11, 1917;

. unrrnn srarns PATENTFF1E WILLIAM EATON PERRYCLEAR, OF SAVANNAH, GEORGIA, ASSIGNOR 0F ONE-HALF r0 LUTHER WILSON HIGH, or WILSON, nonrn CAROLINA.

srovn.

Specification of Letters Patent. Patented Sept. ill, 191% Application filed February 21, 1917. Serial No. 149,986.

To all whom it may concern:

Be it known that I, WILLIAM E. PERRY- CLEAR, a citizen of the United States, residingat Savannah, in the county of Chatham and State of Georgia, have invented certain new and useful Improvements in Stoves and I do hereby declare the. following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to stoves and furnaces, and more particularly to improvements in certain novel constructions and arrangements of the ash dumping mechanism, ash pan raisin and lowering mechanism, the grate shaking mechanism and of the other related parts.

The objects of my invention are to provide a combined grate shaker and draft device whereby as the furnace is shaken a draft therethrough is produced; to provide a draft regulation whereby the draft may be set to any degree or shut off entirely; to provide means for raising and lowering the ash pan; to provide an improved ash-pit and ash-can closure which will prevent the escape of ash-dust during the discharging operation; and to provide common operating means to'open and close the ash-pit and ash-can doors and to raise and lower the ash pan whereby the same may be emptied; to provide means to lock the ash pan support while the doors are being operated; to provide means to close the ash-pit door before the pan is lowered, and to provide means to lock the pan support until the doors are in closed position.

While the invention is illustrated and described in connection with a stationary furnace of the usual size it may also be embodied in a composite light, inexpensive. and convenient heating apparatus, which shall be adapted for use in the several .rooms of a house and which by reason of its lightness may be carried from room to room and set up in any convenient spot.

A further objectof {my invention is to produce an ash dumpingmechanism, formed within the stove itself so thatthe ashes may be collected in a suitable receptacle and removed when necessary without producing the ash-dust usually resulting from the re moval of ashes. H

The "invention further consistsin the ar rangements and combinations of parts thereof, all substantially as will be hereinafter set forth and finally embraced in the accompanying claims.

In the accompanying drawings,

Figure 1 is a sectional elevation of the improved furnace;

Figs. 2 and 3 are sections of the grate and ash pan closing mechanism;

Figs. 4 and 5 are sections taken on lines H and 5-5 of Fig. 1;

Fig.6 is a section on line 6-6 of Fig. 1 looking down from the top thereof;

Fig. 7. is a detailed section of the rack operating pinion and the lock therefor;

Fig. 8 is a side view of the locking mechanism;

Fig. .9 is an elevation of the rack bars and ash pan'support; and

Fig. 10 is a detail of the shaft lock.

. Inthe improved furnace immediately below the firebox 1 is located the grate-chamber 2, the walls thereof being provided with an annular series of draft or ventilation openings 3, and below these openings the walls are tapered inwardly, as at 4, to form a rectangular ash-outlet 5. Fitting tightly within said grate-chamber is an annular draft registering in certain positions with the openings 3 in the grate chamber walls. Thedraft valve is provided at any convenient point with grate supporting means, shown in this instance as integral arms 8 terminating in a central hub 9, which forms a bearing for the oscillatable grate member 10, provided with a hand lever 11 for op erating the same.

Immediately beneath the ash-exit 5 the interior walls of the furnace are continued to form depending flanges 12 and 13, the flange on one side being omitted to provide an opening for the sliding closure mechanism. The flange on the opposite side is provided with an opening 14 for the shaft 15. At the junction of the tapered grate walls t and the flanges 12 and 13, and preferably formed directly in the walls of the furnace, are the sliding door grooves 16. Extending transversely of the furnace and adapted to pass through opening 14 in the flange 12 is the shaft 15, the same being provided intermediate its ends with a worm 17 and at its opposite ends with the pinionsl8 and the locking members 19, there being duplicate sets on each end of the shaft, as shown in 3O placing'the ash pan in place. This ash pan the drawings. These locking members are provided with teeth adapted to engage the rack teeth and hold the same from movement. Obviously other locking devices may be used;

Pivoted in the flange 12 and passing through the slot of-the outer can flange, is a latch device 42, comprising a bifurcated locking head 43, and areleasing end 44, adapted to be projected into the path of innermost movement of the sleeve 31, and to be depressed thereby. The locking head of the'latch is weighted or spring pressed in normal locking position but when the doors are closed the sleeve contacting with the releasing end of the latch, turns the same on itspivot and releases the shaft for endwise movement.

Arranged on opposite sides of the furnace and formed in the outer walls thereof are the rack slides adapted to provide vertical guides for the movement of the ash pan racks 21. As illustrated in Fig. 9, these racks terminate in a pan seat 22, comprising preferably integral cross arms 28, and a back piece 24:, on which the ash pan 25 is adapted to'restj As shown in Fig. 9, the back rib 24,- is squared at its median part to receive a correspondingly shaped part of the can so that no confusioncan arise in re terminates at its top in a neck section which is arranged to interfit with the flanges 12 and 13 of the ash-pit, and the neck section comprises the side flanges 26, the rear flange 27 formed with the shaft slot 28, and the front flanges 29, which, as shown in Fig. 5, are'cut away to provide movement for the door. Interiorly the base ofthe neck portion of the ash pan is provided with grooves 30, corresponding to those in the flanges of the ash-pit. The'flanges are cut away at the front so that the grooves pass entirely through the walls of both the pan and the furnace.

Surrounding the worm 17 and interiorly threaded to engage the same is the sleeve 31 provided on its upper side with the ash-pit door or closure 32, which is adapted to move laterally with the worm. Beneath, the sleeve is provided with projecting female lugs adapted to receive correspondingmale lugs on the lower ash pan door or closure 33. As is evident from Fig. 1, of the drawing, in normal closed position the sleeve is slightly out of'engageme'nt with the worm but is adapted 'to be brought into mesh therewith by apreliminary lateral thrust just enough to engage the threads. It will be seen that the flanges 26, 27 and the interfitting flanges 29 and34 form an ash-tight connection between the ash-pit and the ashcan while the ashes are discharging from the former into the latter.

On the front end of the shaft'j15 is arranged the conical guide member 36, adaptedto act as a guide for the sleeve in its eX- treme openpositionpn the shaft, and to guide the sleeve partlyonthe pinion 18 when the door is fully open.

-.As shown in Fig. 7, the pinions 18 are .adapted to be secured to the shaft 15,while the locking members 19 are revoluble relatively thereto.

In operation, oscillation of the lever 11 shakes the grate to permit the ashes to drop below into the ash-pit, at the same time permitting a draft to pass from the openings, throughthe rating by the'alternate opening' and closing of the draft valve. Fu'rther more, any degree o-f'draft may be produced by opening moreor less these draft holes or, if desired, thelever may be moved to such a position that they are entirely'closed and all draft .therethrough cut oil; ,Tlie combined draft and grate shaking members act the same. as when using a poker in that the draft assists in cleaning the "coals of'all ashes, that is, as thegrateis shaken the draft of air passing therethrough will materially'assist in removing the ashes from the coals. At the same time the draft of 'air will force the ash dustup into the combus- I tion chamber, thus preventing "its escape into the lower compartment of the stove.

In addition, the structure presents a much more convenientarrangement of grate and draft devices. There is a great saving of material accomplished; it is moreeasily operated because of the one lever; and is less expensive to make.

When it is desired to dump the ashes, the shaft 15 is given aslight lateral thrust to engage the threads of the sleeve, whereupon the shaft is rotated by the lever 10, and the doors slid to open position shown in Fig. 2 As the doors open, the shaft latch 40 is lowered so that the weighted or spring pressed end engages th'e'notch in the shaft and locks it from lateral movement, and

this shaft remains locked until the doors are reclosed, which operation releases the latch. After the ashes are dumped, the shaft 15 is reversely rotated and the doors closed, the sleeve again moving out of engagement with theworm 17, the shaft being unlocked. It will be noticed that. during the entire ash dumping operation the dust therefrom will be confined, and furthermore that the ash pan is locked from movement by reason of the engagement of the teeth of the locking block 19 with the rack 21. i

If it now be desired to lower the ash pan, the shaft 15 is pulledlaterally, which disengages thelock member 19 from the rack and slides it into the offset hub 41, Fig. 7, at thesametime the pinion comes into mesh with the rack, whence a reverse rotation of the shaft 15 lowers the racks and the ash pan to dumping position. The pan is brought back to ash receiving position by the reverse rotation of the shaft and held by a lateral thrust of the shaft to locking position.

I do not wish to be confined to the particular mechanism employed for carrying out this invention, as it is susceptible of various modifications without departing from the scope of the claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In combination with a furnace provided with draft openings in the walls thereof, a movable grate located above said openings, and inter-connected means to move said grate and control said draft openings.

2. In a furnace, a grate therefor; said furnace being provided with draft openings below said grate, and a single lever to simultaneously oscillate said grate and to open and close said draft openings.

3. A draft device for a furnace compris .ing a grate, an annular member movable therewith and provided with openings therein adapted to cooperate with the draft openings in the wall of the furnace, and means to move said grate and annular member.

4. In combination with the ash-pit of a furnace, an ash pan adapted to be placed in ash-receiving position, a closure for said ash pan, and inter-connected means to open and close the ash pan closure and raise and lower the ash pan.

5. In combination with the ash-pit of a heating device, a closure therefor, closure operating means, an ash pan adapted to be held in ash-receiving position, means to lower the same, and means to lock the lowering means while the closure means is opcrating.

6. A heating device, including an ash-pit, a closure therefor, closure operating means, an ash pan, means to raise and lower the same to and from the ash-pit, and means to lock the raising and lowering means while the closure means is operating and to close the ash-pit door before the pan is lowered or raised.

7. A heating device, including an ash-pit, a closure therefor, an ash pan, means to raise and lower the same, including means to prevent the closure from being opened When the ash pan is moved.

Copies of this patent may be obtained for five cents each, by addressing the 8. In a furnace, a grate, a draft annulus connected thereto and a member provided with draft openings adapted to register with similar openings in the furnace wall,

a single lever connected to said grate and annulus to oscillate the same.

9. In a furnace provided with an ash exit, ash receiving means adapted to communicate with said exit, a closure for said exit and ash receiving means, and means to simultaneously open and close both exits.

10. In a furnace provided with an ash exit, an ash pan, a shaft, a worm thereon, a sleeve surrounding said worm, a slide connected to said sleeve and movable thereby to open and close said exit.

11. In a furnace provided with an ash exit, a sliding closure for said exit, a movable carriage therefor adapted to hold a pan, a rack connected to said carriage, a

shaft, a worm thereon to engage said sliding closure, said shaft also having a pinion and lock thereon to engage said rack, and means to rotate and longitudinally slide said shaft to operate either the carriage or the closure.

12. In a furnace provided with an ash exit, a closure therefor, a carriage adapted to support an ash pan, elevating means connected to said carriage, a shaft, means thereon for operating said closure, means on said shaft for elevating said carriage, means on said shaft for locking said carriage, and means for either operating said closure or said carriage, and means for locking one upon the operation of the other.

13. In a furnace provided with an ash exit, a pan, a closure for said ash exit and interconnected means for moving said pan to and from ash receiving position and for opening and closing the ash exit, and means to lock the pan from movement until the ash exit is closed.

14. In a furnace provided with an ash exit, a pan, a closure for said exit and means for moving said pan to and from ash receiving position and for opening and closing said ash exit, including means to close the ash exit before the pan can be lowered.

In testimony whereof I aflix my signature in the presence of two witnesses.

WILLIAM EATON PERRYGLEAR.

Witnesses:

LUTHER W. HIGH, J. BALLARD MOORE.

Commissioner of Patents,

Washington, D. G.

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