US1440538A - Sifter mechanism - Google Patents

Description

Jan. 2, 1923. 1,440,538; A. l. S. HALVORSEN.

SIFTER MECHANISM;

FILED {UN 11. 1922. 2SHEETSSHEET 1.

um HHHIHHHII I Jan. 2, 19.23.

1,440,538. A. I. S. HALVORSEN.

SIFTER MECHANISM.

men JULY 17. 1922. 2 SHEETS-SHEET 2.

ATTORNEY Patented Tan. 2, 11923.

AXEL I. S. HALVOBSEN, F ALBANY, INDIANA.

SIFIER MECHANISM.

Application filed July 17, 1922. Serial No. 575,701.

To all whom it may concern:

' a citizen of the United States, residing at Albany, in the county of Delaware and State of Indiana, have invented certain new and useful Improvements in Sifter Mechanisms, of which the following is a specification.

My invention relates to sifters for flour bins and the like and it has for its object to simplify and improve the construction thereof.

Bins such as are incorporated in kitchen cabinets and the like for holding flour are commonly constructed with a sifter outlet at their lower end within which is arranged a rotatably supported sieve that is manually oscillated to cause the flour to discharge by gravity through the same. This sieve is mounted within a sifter body detachably connected with the bin and means, includ ing a manually operated handle upon the outside of said body, is provided by means of which the sieve is operated to cause sifted flour to be discharged from said outlet. The principal object or" my invention is to improve the construction of the sieve mechanism of bins of this kind and the invention consists of a sifter mechanism having the peculiar features of construction and mode of operation hereinafter pointed out.

In the accompanying drawings:

Figure 1 is a front elevation of a flour bin including a sifter mechanism constructed in accordance with my invention.

Figure 2 is a plan view of the sifter mechanism.

Figure 3 is a side elevation, partly in section, of the sifter mechanism shown in l iaving reference to the drawings, a is the body of my improved sifter mechanism and b the sieve. The body a is made from sheet metal and at its lower end is formed with a spout 0/ adapted to receive upon it a cap or cover (not shown) by which it is closed when the sifter is not in use. The sieve b is a saucer-shaped, or concaved, circular piece of said sieve resting upon the middle-portion of said yoke, and the ends of the latter being soldered to the chine wire 7) and screen Z); At its middle the yoke b has rigidly fastened to it a depending spindle or stud b which, as shown in Fig. 2, is square in crosssection. This square stud occupies a square hole provided at the middle of the hub of a gear f that is supported by a shelf The shelf 0 is a flap or tang provided upon a girder c which extends diametrically across the interior of body a and has its ends 0 fastened by rivets c to the latter. At its middle the girder c is provided upon its under side with a countersink or socket c that is occupied by the hub of gear 7 so that the latter is held against lateral displacement, and this countersink provides a boss upon the top side of girder c by which the yoke 6 and parts carried thereby, are rotatably supported without liability-of interference between yoke b and girder 0. Circular apertures formed through girder 0 and flap 0 are occupied by the stud b so that the yoke b and'parts carried thereby are held against lateral displacement, said stud being free to rotate in said apertures.

At one side thereof the girder 0 is made with two integral tangs a which are bent downwardly and then laterally under the body portion of the girder to provide two shelves for supporting a metal rack (Z provided at one side with gearteeth in mesh with the teeth of pinion f, the space between said shelves andthe bodyportion of girder 0 being slightly greater than the thickness of the rack to permit free movement of the latter. As will be clear the rack d is held against lateral displacement by pinion f and the two tangs c. A spring 8 may be provided having one end thereof connected with a depending lug" or tang d atone end of rack 01? and its other end connected with a depending lug or tang c integral with one of the shelves 0*. This spring serves to yieldingly hold the rack at the limit of its movement in one direction with tang d against the other shelf 0 Spring 8, while desirable, is, however, not essential to myinvention and may be dispensed with if desired.

The depending lug or tank d of rack (Z is made with a threaded aperture to receive gear teeth with flour.

the thr aded inner end it of a handle 7:- whose shank portion extemls through an aperture yn'ovided in body a at m.

The body (4 is telescopically litted at its upper end upon the usual outlet spout of the bin and when a supply of llour or the like is within the bin, said flour feeds by gravity lown onto the sieve Q will therefore be clear that by means of handle it the rack 05 may be manually reciprocated and said rack will then act through pinion j and stud B to oscillate the sieve causing the flour to pass through the latter and discharge from nozale 0;.

The construction above described is ethcient, simple and inexpensive and, as will be clear, the location of the rack (Z and pinion f below the girder 0 prevents clogging of the It will also be observed that the construction described has the advantage that the sifter may be removed for cleaning by simply removing body wfrom the bin and. li ting the sieve out, and that when so removed the pinion f is held in its proper normal position by the pocket 0 -VVhat I claim is:

1. A SlftGT'HlQCllLlllSDl comprising a body for attachment to bin; a girder within. said body extending. diametrically across the same and having its ends fastened to said body, said girder being made at its middle and upon its under side with a recess; a pinion pocketed w1th1n said recess; a spindle connected with said pinion and extending upwardly therefromthrough said girder; a

"sieve rotatably supported upon the top side of isaid girder and connected with said spindle; a rack slldably supported below and bye-said girder, said rack-being in engagement with said'pinion, and means connected with said rack and extending therefrom through the wall of said body to the exterior of the latter by means of which the "ark is reciprocated to oscillate the pinion, spindle and sieve.

body, said girder I v I v I ported upon the top side ol: said girder and connected with said spindle; a: rack shdably "supported below and by said girder, said irack being in engagement with said pinion andboth said rack andsaid pinion being coveredandv sh elded. from the flour or the like by said girder, and an extension from a 1 zsaid rack projecting through the wall of said body to. theexterior thereof by means of tened to said incense which the rack is reciprocated. to oscillate the pinion, spindle and sieve.

S3. A sitter mechanism comprising a body for attachment to a bin; a girder within said body extending diametrically across the same and having its ends fastened to said body, said girder-being made at its middle. and upon its under side with a recess; a pinion pocketed within said recess; a spindle connected with said pinion and ntending upwardly therefrom through said girder; a sieve rotatably and removably supported upon the top side of said girder-and connected with said spindle; a rack slidably supported below and by said. girder, said rack being in engagement with said pinion and an extension from said rack projecting through the wall of said bodyv to the exterior thereof by means of which the rack is reciprocated to oscillate the pinion, spindle and sieve. p

4-. A sifter mechanism comprising a body for attachment to a bin; a girder within said body extending diametrically across the same and having its ends fastened to said body, said. girder being made at its middle and upon its under side with a recess; a pinion within said recess; a tang integral with said girder and extending beneath said pinion to support the latter withinsaid recess; a spindle connected with said pinion extending upwardly therefromthrough an aperture in said girder and downwardly-throughan ..1l'l3.6 in. said tang; a sieve rotatably and "ily supported upon the top side of oer and connected with said spindle; racla slidably supported below and bysaid girder, said rack being in engagement with said pinion, and anextension from said rack projecting through the wall of said body to the exterior thereof bymeans of which the rack is reciprocatod to oscillate the pinion, spindle and. sieve.

. 5. A. sitter mechanism comprising a body tor attachment to a bin; a girder within said body extending diametrically across the'same and having its ends fastenedv to said body, said girder being made at its middle and upon its under side with a recess; a pinion iin said recess; atangintegral with said. and extent n beneath s id pinionto g. the latter within said recess; ie connected with said pinion extendlv therefrom tnreugh an apergirder and meshing with said pinion; tangs integral with said girder extending under and slidably supportingsaid rack with provision for endwise movem ntthereof but so as to hold. said raclr against sidewise displacement and means connected "with-said "der and downwardly through rack and extending therefrom through the forced and a bail-shaped yokewithin which wall of said body to the exterior of the latter said screen is centrally disposed and to the 10 by means of which the rack is reciprocated ends of which said screen is fastened, said to oscillate the pinion spindle and sieve. yoke being engaged with the spindle of the 6. A sitter mechanism constructed in acmechanism.

. cordance with claim'l wherein the sieve com- In testimony whereof I have aflixed my prises a circular saucer-shaped piece of wire signature. screen having its marginal portion rein- AXEL I. S. HALVORSEN.

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