US825014A - Sifter. - Google Patents

Description

PATENTED JULY 3, 1906'.y

W. N. TRELEAVEN.

SIPTER.

APPLIOATION FILED naaf/,1906.

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IINITEI) STATES PATENT OFFICE.

WALTER N. TRELEAVEN, .OF CHICAGO, ILLINOIS, ASSIGNOR TO IDEAL SIFTER COMPANY, -OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SIFTER.

Specification of Letters Patent.

Patented July 3, 1906.

To 1J/Z whom it may concern:

Be it known that I, WALTER N. TRE- LEAVEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Sifters, of which the following is a specification.

My invention relates to an improvement in the construction of sifters such as are commonly used, more particularly for culinary p'uilposes, as in sifting flour and other materia s.

The primary object of my invention is to provide a novel and simple construction of sifter of the kind adapted to be held in and operated by one hand to leave the other hand of the operator free to perform the stirring as -the material is being sifted.

In the accompanying drawings, Figure 1 is a broken perspective view'of my improved sifter, Fig. 2, a plan section taken at the line 2 on Fig. 1 and viewed in the direction of the arrow; and Fig. 3, an enlarged vertical section of the base portion of the sifter, the section being taken at the line 3 on Fig. 1 and viewed in the direction of the arrow.

4 is the shell or body portion of the sifter, preferably of cylindrical form and open at its base, the upper end 5 being shown as scoopshaped. At a suitable distance above the base is attached a handle 6, and to insure rigidity of the same I solder or otherwise fasten a brace or strut 7 to the under side thereof and to the body portion 4.

Within the shell at a suitable distance above its open bottom is placed a screen 8 of desired mesh, and as a referred manner of securing the screen in p ace I form a ring or band 9 (see Fig. 3) and extend the screen, which is preferably cut to a size somewhat larger than the diameter of the shell 4, across the top of said ring and then turn the overlapping edge portion ofthe screen downward to closely hug the peripheral surface of the band or ring 9. The screen and rin are then inserted into the lower portion of t e shell 4 until the former meets the annular shoulder 10, formed by the beading of the shell near its base. The width of the ring 9 bein somewhat greater than the distance from t e bottom of the shell to the shoulder 10 will leave a portion of the ring after its insertion into position projecting below the shell. This projecting ring portion is then spun or ,crimped around the shell 4at 11 (see Fig. 3) to firmly clamp the parts together, although soldering may be employed as well to further insure securing a perfect union.

Bearing against the inner surface of Vthe screen is an agitator 12, preferably formed of wire, one end vter-minating in a hook or finger- Urasp 13, which rojects through a slot 15, formed in the she l adjacent to the handle 6. The other end of the agitator is .soldered or otherwise attached to the shell, and near this end the wire is formed into a coil 14 for the purpose of affording a spring which tends to return the agitator to and hold it yieldingly in the normal position shown in Figs. 1 and 2 and to exert a pressure of the agitator against the surface of the screen 8 of the sifter. Between the coil 14 and the free end of the agitator or linger-grasp 13 the wire is bent back and forth upon itself to cross the screen repeatedly at comparatively close intervals, thereby presenting an extensive rubbing-surface of the agitator to the surface of the screen for the purpose of operating more expeditiously in sifting the material being treated through the screen by the manipulation of the agitator.

In forming the slot 15 in the shell 4 I prefer to do so by slitting the latter, then turning inwardly the edges thus formed, thereby providing flanges 16 both above and below the slot to afford greater bearing and wearing surfaces for the free end of the agitator. It is obvious that the slot should be of such a width as to insure freedom of action of the agitator within the same while being manipulated by the operator and at the same time to prevent the agitator from being sprung away from and out of contact with the screen.

To operate the sifter, the handle is gras ed in one hand-say the left hand-and a ter the shell has been filled wholly or in part with material to be sifted the projecting end portion or finger-grasp of the agitator is engaged by the index-finger of the hand holding the handle 6 and pulled toward the same and returned by the resilient action of the coil 14 to the opposite or reverse position as illustrated, in Fig. 1 of the drawings, upon release of the finger. This operation is repeated while the sifting is being done, and if the fingergrasp is suddenly and fully released each time after being drawn toward the handle, as it may be, it will be seen that the sifting action Will be enhanced by the j ar produced by forcible encounter of the agitator under the force of the spring with or its abutment against the inner Wall of the body 4. This need not be done, however, as the finger may remain in constant engagement With the iinger-grasp, thereby preventing the same from such encounter. Which the construction renders possible, is oftentimes advantageous, since the sifting action is more or less vigorous under the diffferent manipulations of the agitator, thus permitting to the operator greater control of the sifter to enable him thereby to regulate at Will the amount of material passing through it.

The construction shown and described may be variously modiiied Without departure from the spirit of my invention.

This variety of operation,

What I claim as'neW, anddesire to secure by Letters Patent, is-

In a sifter, the combination of a shellopen at both ends andprovided With a handle, a sieve extending over one of said ends, a slot in the shell adjacent to said handle, and an agitator composed of a Wire bent upon itself between its ends, to extend back and forth at intervals across the surface of the sieve and having formed in it a coiled s ring adj acent to one end of the Wire, sai end being fastened to the shell and the opposite end of the Wire having a nger-grasp projecting through said slot.

` WALTER N. TRELEAVEN.

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