US 2562647 A
Description (OCR text may contain errors)
July 3l w51 c. H. sHAvER 2,562,647
POWER CONTAINER SIFTER TOP Filed 001'.. 30, 1947 MVS/vra@ @Zuma A4 .Mam er@ Mou;
Patented .u-ly 3l, 1'95'1 POWDER CONTAINER SIFTER TOP Clarence H. Shaver, Glencoe, Ill.
Application October 30, 1947, Serial No. 783,179
V Claims. (Cl. 222-484?) This invention relates to containers for dusting powder or for other similar type materials, and more particularly to a sifter top for such a container.
Untidiness, wastefulness, and inefiicient and ineifective use of powder have always been associated with dusting operations, particularly when attempting to dust a small confined portion of the body. Various sifter tops have heretofore been proposed which dispense the powder from a limited area regardless of the positioning of the top, thus materially reducing the dusting effect of the powder when larger portions of the body are to be dusted. On the other hand, some tops allow only a limited number of relatively large, closely spaced streams of powder to be dispensed from the container thus causing large amounts of the powder to be wasted because of the failure of the ne particles of powder to be sifted and thus adhere more easily to the body surface. It is the object of this invention to provide a sifter top which will allow a limited amount of powder to be dispensed from a confined area of the top in one position, or larger amounts of powder to be dispensed from broader areas of the top at other positions, causing progressively greater dusting effects on the body.
It is a further object of this invention to provide a sifter top which is simple in design, inexpensive to produce, and effective in operation.
Further and additional objects will appear from the following description, accompanying drawings, and appended claims.
In accordance with one embodiment of this invention a sifter top for a container adapted for dispensing dusting powder is provided, comprising two perforated covers, one enclosed within the other, and both adapted for fitting over the discharge opening of the container. The outer cover is rotatably mounted, so that in certain relative positions of the two covers, various sets of perforations of the covers are caused to register thereby enabling the size of the dispensing area, the size of the holes, the multiplicity of holes, and the amount of powder dispensed to be controlled.
For a morecomplete understanding of this invention, reference will now be had to the drawings, wherein- Fig. 1 is an exploded, fragmentary, perspective View. of the container and sifter top; Y
Fig. 2s a fragmentary` side-elevational view of the sifter top andthe upper end portion of the container, with a portion of the top cut away in order to show the manner in which the top is assembled over the opening ofthe container;
Fig. 3 is a diagrammatic plan view of the top showing all of the perforations completely out of registration;
Fig. 4 is like Fig. 3, showing a plurality of the perforations arranged in concentric circles about the center of the top in registration, while the remaining perforations are completely out of registration; Y
Fig. 5 is like Fig. 3, showing a plurality of the perforations arranged about the outer concentric circle in registration, while all the remaining perforations are completely out of registration;
Fig. 6 is like Fig. 3, showing a plurality of the perforations arranged about a concentric circle intermediate the inner and outer concentric circles in registration, while all the remaining perforations are completely out of registration; and Y Figjl is like Fig. 3, showing a plurality of the lperforations arranged about the inner concentric circle in registration while all the remaining perforations are completely out of registration.
Referring now to the drawings, a container I0, suitable for dispensing dusting powder or other similar types of granulated materials is provided, having a discharge opening I2. Said discharge opening in this instance is of the type shown in Fig. 1 having a necked portion I3 with the outer edge of said opening flared out slightly in order to provide a lip I4 for retaining both the inner cover I6 and outer cover I8. Said inner'cover I6 is cup-like in design and is adapted to tightly iit over the discharge opening I2, and after it is in place, its downwardly protruding portion 20 is tightly crimped about the lip I4 and thus prevented from any rotary movement. The outer cover I8, also cuplike in design, is adapted to t over both the discharge opening I2 and the inner cover l5 as shown in Fig.' 2, andafter assembly, the downwardly extending portion 2I of the cover Is is turned inwardly under lip I4 and crimped portion 20 of cover I6 so as to prevent the outer cover from becoming disassembled. However, said coverV I8, is so mounted that itis free to be manually rotated on said cover I6, although it will be frictionally held in any position to which it may be rotatably adjusted.
Said covers I6 and I8 are provided with pluralities of perforations 22 and 24, respectively. Said perforations 22 of cover I6 are arranged in circles which are concentric with the center of the cover, and the perforations in each circle are spaced uniformly apart, that is, they are symmetrically disposed about the center of the cover. Said perforations 22 are of varying size. The perforations 22a, arranged about an outer concentric circle 26, are of the largest size; the perforations 22h, arranged about an intermediate concentric circle 23, are slightly smaller than perforations 22a; and perforations 22e, arranged about an inner concentric circle 30, are of the smallest size, as shown in Fig. 1.
Perforations 24a, 24h, and 24C of cover I8 are of the correspondingly same size as perforations 22a, 22h, and 22o and are arranged about similar concentric circles 26a, 28a, and 30a as those of cover I6. The perforations 24 are so arranged that in certain positions of cover I8 relative to cover I6, as shown in Figs. 4, 5, 6, and 7, certain sets of perforations are caused to register. For instance, as shown in Fig. 4, a plurality of perforations 24a., 24h, and 24o, arranged concentrically about the center of cover I6, are brought in registration with the perforations 22a, 22h, and 22e, of cover IB, thus enabling a great amount of powder to be dispensed from a large dispensing area so as to produce a maximum dusting effect, and all other perforations of cover I8 are completely out, of registration. As shown in Fig. 5, if the outer cover I8 is rotated slightly in a clockwisey direction, as indicated by the ar.- row A, a plurality of perforations 24a arranged about an outer concentric circle 26a are brought in registration with perforations 22a of coverV I6, and all other perforations of covers I6V and I8 are completely out of registration. This permits a lesser amount of powder to be dispensed than was dispensed in the position shown in Fig. 4,I
yet there is still provided a large dispensing area. As shown in Fig. 6,'a`lurther clockwise rota tion of cover I8, indicated by the arrow A, causes a plurality of perforatins 2H) to register with perforations 22h of covers I8 and I6 respectively, arranged about an intermediate concentric circle 28 and 28a, while all other perforations of both covers'IS and I8 are. completely out of registration.
As shown in Fig. '7, a further clockwise rotation'of cover I8 causes a plurality of perforations 24o of cover I8, arranged about the concentric circle a, to register with perforations 22e arranged about concentric circle 3o of cover I5, while all remaining perforations of both covers are completely out ofY registration. A further clockwise rotation of theV cover I8 causes all perforations of both covers to be completely out of registration, thereby preventing any powder from being dispensed.
Cover I8 has va knurled outer rim, as shown in Figs. 1 and'2, to aioi'd a more effective grip in manually rotating vsaid 'cover' I8 relative to cover I6.
From the foregoing it will be seen that a container' top'hasbeen provided whereby one may control the amountof powder dispensed, the size of the area and the number and size of the per-Y forations' from which it is dispensed, depending o'n'which portions of the body' are to be dusted.
By positioning the sifter perforations symmetrically about the axis of rotation of the. movable c over member in concentric circles of 'gradually increasing diameter, or at varying distances from the axis of rotation of the movable cover, the area from which sifting takes place may be restricted or widened to take in substantially the entire cover, yet in any sifting position of the movable cover member, the powder will leave thecontainer in a plurality of relatively small streams to produce a true dusting effect.
`A sifter top has alsov been provided which is simple in design, inexpensive to construct, oi in-= creased eiciency in operation, one possessing great flexibility in adjustment/for use, and which will reduce waste and untidiness caused from dusting to a minimum. It will vbe obvious that certain modifications of this specific embodiment shown may be made Awithout departing from the spirit and scope of this invention. For example, a greater number of perforations could be provided as well as greater variety in the size of perforations. Also in certain containers it may be more desirable to have disc-shaped covers instead of`tl1e cuplike type described. Also it might be desirable in certain instances to interchange the covers so as to have the one with the fewer number of perforations on top. The use of the device also is not restricted to dusting powder, but may, of course, be used with other powdered or granulated materials such as salt, sugar, borax, etc.
While a particular embodiment of this invention is disclosed herein, it will be understood, of course,` that the invention is not to be limited theretofsince many. modiiications may be made, and itis contemplated, therefore, by the appended claims to cover such modications as fall within the true spirit and scope of my invention.
' Havingv thus described my invention, what I claim and desire to secure'by Letters Patent is:
1. A closure for the discharge opening of a container ofthe class described comprising two covers mounted in close Contact for relative concentric movelnent, one cover having a plurality of openings arranged in'a series of concentric circles at varying distances from the center of rotation, the second cover having at least twice the number of openings located in similar ccncentric circleslwhich are, at the same distances from the center of rotation, the central angle subtended by the space between any twov adjacent openings in a given circle ofthe second cover being dierent than that of the central angle subtended rby the space between any two adjacent openings in another circle or" said second cover, whereby, Vbysluitable rotation of the covers relative to each other, all of the openings in the rst cover may be simultaneously either open orl closed, or. any of the 'openings of any one of the circles of the iirst, cover may be open while all the openings in the other circles thereof are closed.
` '2. A closure as dened in claim 1 in which the size of the Vopenings"infthe respective circles is different'. i n
V3.V A'closure as defined invclaim 1 in which the size of the openings in the circles more distant iromtheflcenter is larger thanthat of the circle nearestthe center.y
' 4'."A' closure asdefined in clairnl 1 in which the size of thefopenings in the respective circles is greater as'th-'circumference ofthe respective circleis greater.Y f
` 5. A closure as defined inclaim 1 in which the @over with the. lever @meer 0f. Openings is. Sta,- tionary andLtheother concentrically movable rliriihjerete,
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REFEBENQES, C ITED The followingA references arey ofrecord in the file of this patent:
UNITED STATES PATENTS