US1135107A - Ash-sifter. - Google Patents

Description

l. W. GRUNDORF.

ASH SIFTER.

APPLICATION FILED MAY 5, I913. L1$5JU% Patented Apr. 13, 1915.

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HIE NOR/2'15 PETERS ca. FHOTC LVTHO.. WASHINGTON n, c.

J. W. GRUNDORF.

ASH sums. 7 APPLICATION FILED MAY 5. I913.

' Patented Apr. 13, 1915.

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THE NORRIS PETERS CO). PHOTO-LITHO WASHINGTONv By C J. W. GRUNDORF.

ASH SIFTER.

APPLICATlON FILED MAY s 1913.

mmlm Patented Apr. 13, 1915.

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THE NORRIS PETERS c0.. PHOTc-LITHQ. WASHING TON. D. c

JOHN W. GRUNDORF, OF ST. LOUIS, MISSOURI.

ASH-SIFTER.

Specification of Letters Patent.

Patented Apr. 13, 1915.

To all whom it may concern: 7

Be it known that I, JOHN W. GRUNDORF, a citizen of the United States, and resident of St. Louis, Missouri, have invented certain new and useful Improvements in Ash- Sifters, of which the following is a specification.

This invention relates to improvements in ash sifters and has for its object a drum located in a sealed compartment and a receptacle for receiving the ashes and dust removed from the drum during its rotation, and a means for automatically opening the drum to remove the particles of coal after the ashes have been thoroughly sifted.

A further object of my invention is to construct a device comprising a frame, a housing supported thereby, a rotating reticulated drum mounted in the housing in which the ashes are placed, and a detachable receptacle suspended beneath the housing for receiving the ashes and also to receive the particles of coal after the ashes have been removed therefrom.

Figure 1 is a vertical sectional view showing my invention. Fig. 2 is a combination sideand cross-sectional view of the same. Fig. 3 is a detail sectionalview showing the lever mechanism and contacts by which the door or cover of the drum is automatically opened when reversing the drum in order to remove the un-sifted contents. Fig. 4 is a detail perspective view of the latch made use of for holding the drum in rigid position. Fig. 5 is an enlarged detail sectional view of the cleat made use of in supporting the reticulated material on the drum. Fig. 6 is a detail perspective View of the stop made use of for limiting the movement of the drum cover. Fig. 7 is a top plan view with the cover removed. Fig. 8 is a detail side elevation of one of the drum heads. Fig. 9 is a detail end view with a part broken away and in section showing the inclination and the bottom edge 11 thereof is terminated into a projection with its extreme bottom edge looped as indicated by the numeral 12 in which is supported a strip of spring material 13 which acts as a contact strip to complete a perfect connection between the same and the sides 14 of the ash receptacle 15 suspended beneath the housing. This contact or connection prevents the dust from sifting through and escaping into the apartment in which the machine is operated.

The ash receptacle 15 is provided on its upper edge with a stiffening strip 16, and on each end with a handle 17. On the stiffening strip and above both of the handles 17 is located a projection 18 with which contacts the teeth 19 of the spring latches 20; these latches being firmly secured by means of rivets or otherwise to the sides of the housing 7, and the free ends 21 of the spring latches are in such position as to permit the fingers when grasping the handle to contact with the same, and by outward pressure remove the teeth 19 from the projections permitting the ash receptacle 15 to be removed from the housing.

In the housing 7 is located a rotating drum 22 consisting of two heads 23 rigidly mounted upon a shaft 24:, which first is sup ported in the sides of the housing 7 and on said shaft, and firmly secured to the inner side of the drum heads are castings 25, by which said heads are firmly supported. The heads 23 are concave in form, and the edges are provided with flanges 26 forming a groove 27 in which the sliding door 28 is seated and permitted to operate. To each of the heads, and extending the length of the drum is attached a strip of reticulated material 29 such as a heavy woven wire screen of a mesh to properly separate the un burned particles of coal from the ashes. This reticulated material extends around the entire periphery with the exception of approximately one-fourth thereof, and this uncovered portion acts as the inlet and outlet for the material, and this opening is covered or closed by means of the sliding door 28, which is also provided with reticulated material 30, the ends fastened to bars 31; these bars are permitted to slide in the groove 27 formed in the flanges and its movement when open is limited by means of a stop 32 formed on a stiffening rib 33 located on the inner periphery of the reticulated material. This strip is centrally located and is arranged of any desirable width.

- On the free or opposite end of the door, and

on the cross bar'31 is'located a handle 34, provided with a spring latch 35, the tooth of which is arranged to communicate with a receiving member36 formed onthe stiffening rib 37; by this means the door is held in closed position while the drum is in rotation.

In the housing 7, and to oneside thereof is located an operating lever 38, which extends through a slot 39 formed in the side of the housing, said lever being provided with notches 40 which are arranged to engage with the material forming the housing, and by which the lever is held in its desired set position; this lever is pivotally connected to a pair of curved vreleasing arms 41 pivoted at their upper endsto the housing; the lower ends formed into a hook' 42 which when in position as shown by solid lines in Fig. 3, are in direct line with the movement "shifting process is in action,.the releasing of. the projections 43 located onfthe sliding door, and when the drum is rotated in re verse direction, the projections 43 will contact "with the 'hooksand thereby automatically: open the door and stop the drum with its opening at the bottom, thereby permittingv the contents to pass into the'ash receptacle 15 located beneath the'structure. Duringthe rotation of the drum, and-while the arms 41 are placed in a tilted position as shown by dotted lines in Fig. 3,thus reniov ing the same out of the path of travel of the projections 43. In each of thedrum heads '23 are located deflectors 44, which are tilted toward the center-and the purpose of which is to direct the coal and ashes toward the reticulated surface while the drum is in rotation.

On the housing is pivotally located a-locle 7 ing device 45 pivoted to the casing at the u I point indicated by the numeral 46, its free end bent approximately at right angles and provided with a shoulder 47 which is designed to fitinto a groove or slot cut into the drum head, and this structure is used to hold the drum in rigid position while the ashes are being placed therein, and after the provide a cover 48, the ends bent down- Wardlyforming a looped flange 49, and in the same are strips of inwardly bent spring material 50, the free end contacting'with the upper edge of the housing making an absolutelytight and dustproof joint.

' Having 'fully described my invention what I claim is:

' An ash sitter comprising a rotating drum consisting of solid end disks,reticulatcd material forming a cylinderand connected to the inner .edges ofthe enddisks; a sliding cover formingpart of the periphery of the drum, the edges of the solid ends being provided with groovesin which the cover operates, a crank shaft supporting the drum in combination with a housing in which the drum is axially mounted, and alever 'mechanism arranged in proper relation with the drum for automatically opening the doorof Copies otthis patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washingtomfi. C.

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