US798841A - Sifter or screen. - Google Patents

Description

No. 798,841. PATBNTED SEPT. 5, 1905.

I. H. TAYLOR.

SIPTER 0R SCREEN.

APPLIGA'MON FILED JAN. a. 1905.

o@ un llll n anun um mvo-uvnoulnnws. msumcnm n a ISAIAH H. TAYLOR, OF PIIILA DELPHIA, PENNSYLVANIA.

SIFTER OR SCREEN.

Application filed January 3,

To (LH ich/om, it muy conm/arzt:

Be itknown that I, Isaiaii II. '.Iavnoic, a citizen of the United States, residingl at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Sifters or Screens; and I do hereby declare the follow'- ing 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.

My invention relates to sifters or screens used Vfor sifting ashes and forother household purposes` and has for its object a device which will prevent the escape of dust arising' from ashes being sifted and the thorough separation of the ashes from the unconsumed particles of coal; and the invention consists in certain improvements in construction, which will be fully disclosed in the following specitication and claims.

In the accompanying' drawings, which form part of this specification, Figure 1 represents a vertical transverse section of an ash-sitter embodying my invention, the parts being exaggerated for the purpose oif illustration; and Fig. 2 a top plan view of the receptacle for the material to be sifted.

Reference being had to the drawings and the designating characters thereon, the numeral 1 indicates a sheet-metal can or receptacle and is provided with a bead 2 at its upper end and suitable handles 3, by which it can be carried.

4 indicates an inner sheet-metal receptacle, sifter, orsieve for coal or other material to be sifted and is provided with a horizontal flange 5, which rests upon the bead 2 and forms a dust-tight joint therewith, and in the flange is a concentric depression or scat 6, and bevond said seat and forming the extremity of the flange is a gripping-bead T, designed to be seized by the hands of the person using the device to agitate the contents of the receptacle by imparting semirotary motion thereto. The body of the receptacle 4 is approximately the diameter of the interior of the outer receptacle at a point ad jacentto the annular projection 11 to prevent the escape of dust rising in the annular chamber between the two receptacles, and Vfrom this point of engagement the body of the receptacle 4 is tapered toward its bottom S, and the wall 9 is foraniinous or perforated, as shown, to afford ready escape for the refuse or ashes.

Sifters of this class as heretofore construct- Specification of Letters Patent.

Patented Sept. 5, 1905.

1905. Serial No. 239,336.

ed have been defective in that the mass of coal or ashes in the center of the receptacle or sitter lie inert and receive very little agitation. To overcome this objection, a conical projection 10 is provided on the Aforaminous bottom 8, and the cone is preferably perforated, as shown, to provide for the escape of line particles, such as ashes, `from the body of the material being agitated as well as from the perimeter thereof.

11 indicates an annular and inward projection in the wall 8 of receptacleet for the purpose of arresting dust rising' along' the wall and for forming a seat for the concentric project-ion 12 on the cover 13, which seat and projection 12 form the primary or lirst dusttight joint between the receptacle 4 and its cover.

11 is a horizontal flange or extension of the cover which terminates in an annular' downward-projecting bead 15, which rests in and engages the seat 6 in the iiange 5 and 'forms a supplemental dust-tightjoint, and the cover is provided with a handle 16.

1T is an annular chamber around thereceptacle A into which line ashesfrom the perforated wall 9 are discharged and then fall into the receptacle 1.

The several parts of the device are made in the usual manner, the receptacle 4 and the cover 13 being' stamped andthe projection 11 and the beads 'i' and 15 subsequently supplied by suitable beading-machines.

The sifter or sieve thus constructed is as absolutely dust-proof as can be made without the use of gaskets and can be used in any part of a house without the annoyance of escaping dust.

Having thus fully described my invent-ion, what I claim is- 1. A sifter or sieve provided with a tapering perforated wall, an annular inward projection on said wall, and a conical projection on the bottom thereof, and a cover having a downward projection resting on said annular projection.

2. A sifter or sieve provided with a horizontal tlange having a depression or seat therein, and a cover provided with a bead at its perimeter engaging said seat.

3. A si'fter or sieve having an inward projection on the wall thereof, a flange provided with a depression or seat, and a cover engaging' said projection and said seat.

1. A receptacle, a removable sifter or sieve having a horizontal [lange engaging' the upper IOO ITO

end of said receptacle and provided with a depression or seat and a gripping-bead, and a cover having a bead engaging said seat.

5. An outer receptacle, a sifter or sieve having a body Whose greatest diameter is approximately the same as the interior diameter of said receptacle, and tapering downward `from its mean diameter and forming an annular chamber between the walls of the two receptacles, a conical projection on the bottom of the sii'ter, and having a horizontal

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