US1611018A - Ash-sifting device - Google Patents

Description

Dec. 14 1926.

v w. E..FULLER ASH sxwme nsvrca.

" Filed Feb. 6, 1925 2 Sheets-Sheet 1 ATTORNEY.

Dec. 14 {1926.

w. E. FULLER ASH SIFTING DEVICE e, 1926 2 Sheets-Sheet 2 Filed Feb,

lN-VENTOR ATTORNEY WINEESE Patented Dec. 14, 1926.

WALTER E. FULLER, OF ROANOKE. VIRGINIA.

ASH-SIFTING DEVICE.

Application filed February 6, 1926.

This invention relates to attachment for furnaces, stoves or the like, and has for its object the provision of a novel device adapted to be mounted at the bottom of the ashpit of a furnace and acting to sift the ashes and conduct away the dust so that only clean cinders will be left which may be shoveled out of the ashpit for subsequent use.

An important object is to provide a device,

10 of this character embodying motor operated suction means for withdrawing the dust, the motor of the suction producing mechanism also acting tov effect vibration of a sifting screen so that the device will function prop- 15 erly and rapidly. r

Yet another object is to provide a device of this character which may be installed beneath a furnace with comparatively small cost and in an easy manner, which will be 20 simple to operate, positive in action, efficient and durable in service, and-a general improvement in the art.

lVith the above and other objects and advantages in view, the invention consists in 25 the details of construction and the arrangement and combination of parts to'be hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a front elevation of a furnace, partly in section, showing the invention applied thereto and showing the outlet therefrom leading into a flue or the like.

Figure 2 is a horizontal section through 35 the ashpit showing a plan view of the device.

Figure 3 is a horizontal section taken on the line 33 of Figure 1.

Figure 4 is a detail end elevation of the suction producing device and, agitating 4 means for the screen.

Figure 5 is a detail view of the connection between the motor operated arm and the link member connected with the shaker or screen, and

Figure 6 is a detail perspective view of a link element forming part of the construction.

Referring more particularly to the drawings, the letter A designates a furnace hav- 50 ing the usual ashpit B beneath which is located the present device.

In carrying out the invention I provide a casing or receptacle 10 mounted within a recess 11 in the cellar floor beneath the ashpit B, the receptacle 10 being of partially spherical shape and provided at one side Serial No. 86.632.

with a relatively small conduit 12 which entends upwardly slightly beyond the cellar floor. Embedded or otherwise suitably mounted in the floor immediately beneath the a'shpit is a ring member 13 having a depending inwardly extending flange 1e located within the receptacle 10. At the center of the bottom of the receptacle is a thickened portion 15 which constitutes a bearing upper end rotatably supporting a boss or socket member 17 formed on the underside ofa screen member 18 which is circular in shape and which includes a plurality of radial arms 19 carrying a sheet or disk 20 of suitable wire screen of proper mesh.

It is of course intended that the screen 18 be rotatable and to limit the movement thereof in bothdirections, it is provided at its underside witha depending projection 21 operating between a pair of spaced lugs 22 formed upon or carried by the receptacle 10. The rotatable screen member is also provided with an upstanding arm 23 formed .with a socket member 24 for a purpose to be described.

Located upon the basement floor at some convenient point, preferablynear the furnace, is a motor driven fan 25 not illustrated in particular detail but of course including mechanism operating within a casing 26.

eading from this casing is an outlet pipe 27 with which connects a flexible conduit 28 terminating in a nozzle member or pipe 29 leading through the wall into the flue or simply out doors as may be preferred. Connected with the conduit 12 is an inlet pipe 30 which leads into the center of the fan casing 25 as clearly indicated.

The motor shaft 31 carries a disk 32 on which is mounted an eccentric pin 33 en gaged within an elongated slot 34 in one arm of an angle lever 35 pivoted at 36 upon the frame of the suction or fan device. This angle lever further includes an arm-37 with which is pivotally connected, at 38, a link 39 carrying a ball head 40 engaged within the socket member 24. The link 39 extends through a suitable opening 41 in the ash pit of the furnace as clearly indicated in Figure 1.

In the operation of the device, it will be readily apparent that ashes falling through the grate B of the furnace will accumulate upon the screen 18. Whenever it is desired for a vertical shaft 16 which has its i an electric motor and a suitable fan blade to sift the ashes, it is clearly necessary that current be applied to the electric motor of the fan device so that the fan will be put in operation. Quite naturally, this fan will act to produce. suction through the conduit 12 and within the receptacle 1O beneath the screen 18. At the same time, the rotation of the motor shaft will cause the angle lever to be moved so that the link 39 will be correspondingly moved into a lengthwise direction so as to impart an oscillatory movement to the screen 18. Quite naturally, when the ashes tall upon the screen the movement thereof will cause the dust and fine matter to pass through into the receptacle 10 from which the dust and the like will be withdrawn through the conduit 1-2 and fan device and discharged through the conduit 28 and pipe or nozzle member 29 either out doorsor into the hue, as the case may be. Obviously,

the sitting of ashes will be thus accomplished in a very simplem-anner' and after a few moments operation it is clear that only clean cinders will remain in the ash pit above the screen device, it being readily possible to remove or shovel out the cinders for subsequent use. It is really believed that the construction, operation and advantages will be readily apparent to one skilled in the art without further explanation.

I \Vhile I have shown and described the preferred embodiment of the invention, it should be understood that I reserve thc right to make such changes in the form, construction and arrangement of parts as will not depart from the spirit of the invention or the scope of the subjo ined claims.

Having thus described the invention, I claim:

1. In combination with the ash pit of a furnace, a receptacle mounted in the floor therebe'low, and havlng a discharge conduit from the bottom thereof, a ring-like bearing member located above and leading into the receptacle, a screen rotatably mounted upon said bearing member, a suction fan device connected with said outlet and having a discharge pipe, and crank means driven by the suction fan device and operatively connected with the screen for oscillating the latter.

2. In combination with the ash pit of a furnace, a receptacle located in the floor therebelo-w, a discharge conduit. leading from the receptacle, screen rotatably mounted above the receptacle, means for supporting the screen, means for limiting oscillatory movement of the screen, a suction an device connected with said discharge conduit, and mechanical means operatively connected with the tan device and with the screen for oscillating the latter, said means comprising a pivoted angle lever having one arm provided with a link connection to the screen, and an eccentric pin carried by the ian shatt and engaging the other arm of the angle lever or moving the same.

3. A device of the character described, a receptacle located in the floor beneath the ash pit of a tiin'n ace and having a discharge conduit, a bearing member located above the receptacle, a supporting shaft rising centrally from the receptacle, a screen device rotatably mounted upon the shaft and having limited oscillatory movement, a suction tan mechanism power driven and connected with said discharge cond-uit having an outlet pipe, :1 disk on the shaft of the tan carrying an cecentric pin, an angle lever having a slotted arm accommodating said pin, and a link connected with the other arm of the angle lever and pivotally connected with the screen for oscillating the same.

In testimony whereof I aiiix my signature.

WVALTER E. FULLER.

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