US1567751A - Pan cleaner - Google Patents

Description

Dec; 29, 1925.

S. J. QUALLS PAN CLEANER- Filed April 4, 1925 $1? fi I? J. [/6 mvurron Patented Dec. 29, 1925.

UNITED STATES PATENT OFFICE.-

STEPHEN J". QUAIYJLS, OF CASPER, WYOMING.

PAN CLEANER.

Application filed A ril 4,

- f V fyoming, have invented new and useful Improvements inPan Cleaners, of which the following is a specification.

My present invention has reference to a means for cleaning ashes and cinders from a stove or furnace of'a character which will prevent all danger of fire from the removed ashes and which is also dust proof.

A further object isto provide a stove or furnace with an ash pan having a rounded bottom portion terminating in an outwardly directed spout, and in which there is journaled a worm, the spout being nornialiy closed by the ash door, while during the removal of the ashes and cinders I latch on the spout a tubular member that also carries a worm to engage with the first mentioncd worm and whose shaft is i'einovably fixed to spiders carrying a closed reticulated drum arranged in a suitable closed easing, both worm shafts being operated by a handle on the outer face of the casing, and whereby the ashes may be readily removed from the stove and deposited in o the easing without dust or liability of fire, and also wherein the cinders may be readily separated from the ashes during the removing process.

The drawing, which accompanies and forms part of this application, illustrates the improvement.

In the drawing Figure 1 is a side elevation of the improvement, with parts in section, a furnace being indicated by the dotted lines.

Figure 2 is a top plan view of the casing.

Figure 3 is a sectional view through the pan, approximately on the line 3-3 of Figure 1 Figure 4 is a sectional end view of one of the spiral or worm shafts.

Figure 5 is a face view of the second shaft.

In the drawing a furnace 1 is indicated by the dotted lines in Figure 1. Fixed in the furnace below the grate thereof there is a pan 2. The pan has its front wall and its sides inclined toward its bottom and its bottom is formed with a rounded concavity 3. At the inclined outer end i of the pan the concaved bottom is surrounded by a tubular pipe or stem 5. Journaled in suit- 1925'. Serial ml 20,797.

. able bearings in the bottom 3 of the pan 2 and also in its pipe extension 5 there are the ends of a worm carrying shaft 6. The. outer end of the shaft 6 is formed with a reduced squared extension 8 (Figure 5). The pipe extension is designed to be covered latter is in closed position.

To remove the ashes from the pan, the

' ash door of the furnace is opened, and there is arranged over the pipe 1 a pipe section 9 securedon one end of a substantially rec 11 that are designed to engage with an. annular lug 12 on thepipe element 5. This effects a tight engagement between the pipe sections 9 and 5 and also holds the casing 10 properly positioned with respect to the furnace.

The pipe section 9 extends for a short distance into the casing 10 and also passes through one of the closed ends of a reticulated drum 13. The drum has the end thereof through which the pipe 9 passes of a less diameter than the opposite closed end thereof whereby ashes and cinders will fall toward the said outer end of the drum.

Passing through a suitable bearing 14 in the outer end of the casing 10, and connected to spiders 15 that support the drum 13, there is a shaft 16. The shaft, at the portion thereof that passes through the pipe section 9, is provided with a worm screw 17. The free end of the shaft 16 is formed with a socket 18 (Figure 4) designed to receive therein the squared extension 8 on the shaft 6.

A removable handle 19 has a socket engagement with the projecting end of the shaft 16 and the open top 'of the casing 10 is normally closed by a flanged cover 20. The frictional engagement between the flange of the cover and the casing 10 will prevent passage of dust therethrough, the said cover being provided with a suitable handle whereby the same may be readily removed from the casing.

The turning of the handle will, of course, operate the screw conveyors so that the ashes and cinders will be drawn out of the pan into the reticulated drum 18 to separate unburned coal from the ashes and the ashes will fall through the mesh of the said drum, the unburned coal being retained in the by the ash door of the furnace 1 when the drum. The casing and its pipe member 9 are disconnected from the pipe 5 by releasing the latch members 11, and the casing is moved to a suitable place to be emptied. The crank 19 is removed from the shaft 16 and the screw conveyor 17, with itsshaft 16, is drawn through the spout 9, which permits of the drum 13 being raised through the open top of the casing after the closure for the said casing is removed, and the unburned coal in the drum will find an outlet through the opening in the end thereof that normally receives therethrough the inner end of the pipe extension 9. The improvement may be successfully operated without the employment of the drum 13 as will, it is thought, be apparent.

Having described the invention, I claim A furnace having a pan below the grate thereof, said pan having a pipe extension at the bottom thereof, a spiral screw conveyor having its shaft journaled in the said bottom and in the pipe extension of the pan, a normally closed easing, a reticulated drum therein,va pipe extension on one side of the casing entering the drum and projecting outwardly from said casing, said pipe extension designed to receive therein the end of the first mentioned pipe, means latching the pipe sections so connected, a shaft passing centrally through the drum and through the pipe extension associated therewith, supporting means on the shaft for the drum, a spiral worm conveyor on the last mentioned shaft at the portion thereof received in the pipe extension, interengaging means between the ends of both of the mentioned shafts, and an operating handle removably secured to the outer end of the last men'- tioned shaft.

In testimony whereof I afiix my signature.

STEPHEN J. QUALLS.

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