US2052801A - Rotary support - Google Patents

Description

" Setl, 1936. J, l, RU-SSAKOV 2,052,801

ROTARY SUPPORT Filed April 6, 1955 2 Sheets-Sheet 1 206721 27" 2x05 [RILJSCZZZOU p .1935- J. 1. RUSSAKOV 2, 2,801

ROTARY SUPPORT Filed April 6, 1935 2 Sheets-Sheet 2 07 16 Y J9 62 3 i g Y 66 $ZNHH l l w Patented Sept. 1, 1936 UNITED STATES PATENT OFFICE Application April 6,

2 Claims.

This invention relates to rotary supports more particularly for the display or temporary storage of foods, confections and the like.

The invention is of particular utility in con- 5 nection with a support of the class described for use in a refrigerator for preserving foods more efiiciently and conveniently, and among other objects, the invention aims to provide an improved device of this kind.

Other objects and advantages will be apparent from the following description, taken together with the accompanying drawings, in which Figure 1 is a plan view of the main part of the support with the containers absent, parts being shown in section for clearness of description; Figure 2 is a vertical section taken on the line 22 of Fig. 1, looking in the direction of the arrows, with a partial sectional View of one of the containers associated with the structure of Fig. 1; Figure 3 is a slightly modified form showing a different interlocking relationship between the container and the main supporting member but still retaining the same general principle of operation; Fig. 4 is a. fragmentary plan view of an alternative bearing means; and Fig. 5 is an axial cross-section of the form shown in Fig. 4. v

In the illustrative construction shown in the drawings, and turning first to Figs. 1 and 2, I have shown a circular sheet metal base IIJ dished upward centrally as at II to provide a somewhat elevated pedestal to rest upon a floor, shelf or other surface I2. Centrally of the upwardly dished part II is secured a cylindrical bearing member I3, in this instance in the form of an inverted metallic cup having a peripheral flange I4 by which it is secured as by welding to the base III.

Mounted on the base I is the revolvable mem ber indicated generally by the numeral I and 40 comprising a platform-like or tray portion I6 and the bearing portion II, the latter adapted to have a friction-minimizing bearing on the bearing portion I3 of the base. In this instance, the tray I6 is of pressed sheet metal, as will be more particularly described at a later point, and is perforated centrally at I8 to have snugly passed therethrough the bearing portion I1 which in this instance is in the form of an inverted metallic cup having a peripheral flange I9 which may be secured as by welding to the under side of the tray I B at the margins of the perforation I8.

Thus the bearing portions I! and I3 together form a turret-like bearing means upstanding centrally of the base and revolvable tray and rotata- 1935, Serial No. 14,997

bly connecting these parts, the bearing portions I3 and I1 having relative rotation, the part I3 being normally stationary and the part II, with the tray I6, revolving thereabout. The bearing portions I3 and I? have a snug telescoping relation, but at the same time providing a free rolling fit, and to reduce friction therebetween to a minimum, I have provided anti-friction means between the inner and outer cups. As here shown, for this purpose, the inner portion I3 is 10 formed with a central axially and upwardly directed spheroidal nub on its upper outer face 2i upon which the inner upper face 22 of the outer bearing member I'I rotatably rests. Thus the faces 2 I, 22 of the bearing members are spaced l5 apart except at the reduced area 23 provided by the apex of the nub 20, the weight of the tray IS with the containers thereon, being sustained principally by the nub 20.

Desirably the base I0 and tray I6 are further 20 interconnected to prevent casual separation of these parts, while permitting their relative rotation as described, and for this purpose, in this instance, I have shown the inner bearing member I3 indented in its vertical cylindrical wall 24 25 to form an annular groove 25 in which mating indentations 26 on the outer member I! may be received and may move during the turning movement of the parts, thus preventing axial displacement of the parts I3 and I1, while per- 30 mitting their free relative rotation.

The main supporting member or tray I 6, which is carried by the bearing portion II, as just described, is advantageously of substantially greater area than the base Ill and has circumferentially arranged about its periphery a plurality, in this instance five, locations for food jars or containers, one of which is indicated at 21. Some slight interengagement between the tray I6 and the container 21 is desirable, both to predetermine the 10- cation of each container on the tray and also to guard against shifting of the container during rotation of the tray. For this purpose, and assuming that the containers 2! are cylindrical, which is their simplest form, I have shown the bottom of the container 21 upwardly and exteriorly recessed as at 28 to snugly receive therein the circular upwardly directed embossments 29 pressed from the metal of the tray I6. These embossments 29 are advantageously centrally perforated as at 30 to provide drainage for moisture which may accumulate therein and to further facilitate such drainage the surface of the embossments margining the perforation 30, slopes 55 downwardly thereto as clearly shown at 3| in Fig. 2.

To economize on the metal stock for the tray I6, the tray, as best shown in Fig. 1, is conveniently formed with a non-circular perimeter, as by reducing the radial area of the metal of the tray between the containers 21. Also, to provide a smooth edge for the tray l6, eliminating the danger of cutting or scratching by this outer edge, the metal at its periphery is desirably curled downwardly and inwardly as best shown at 32 (Fig. 2), forming a finishing bead which at the same time, by being downwardly turned, does not interfere with the placing of the containers 21 on the tray in position as indicated on the embossments 29. v

The central area of the tray lfi is'also desirably upwardly embossed as at 33in, a somewhat ornamental configuration adding to the appearance and strength of the tray, as well as providing a recess upon the under side of the tray to which the shoulder or flange E9 of the bearing member ll may be welded as already explained. Thus the central and circumferential embossments and the shoulder |9are in a common plane spaced upwardly from the main body of the tray I6, enhancing the appearance and strength thereof while making it economically of sheet metal. e

As shown in the modification of Fig. 3, the perforation 30in the form of Figs. 1 and 2, may be enlarged as shown at 50 to occupy more or substantially all of the internal area of the embossment 29, and the container 5| may have a somewhat reduced bottom portion 52 which is received in the perforation 59,;the shoulder 53 between the reduced bottom 52 of thecontainer and the main part thereof providing an interlocking engagement with the edge ofthe perforation 59 to prevent casual displacement of the container upon the sameprinciple as already described with respect to the other views.

Turning now to'an alternative bearing means shown in Figs. 4.- and 5, the base 55 is of an inverted cup-like form, generally similar to the base In but in this instance isdished downward.- ly as at 55 about the upstandingbearing member 5 Also as shown in, this alternative con-- struction, the bearing member 5% is of machined metal to be riveted or, as here specifically shown, bolted by the nut 51 to the base 55. Telescoping over the inner bearing member 55 is the outer inverted cup-like. bearing member 58 also, 'inthis form, of machined metal 'and rotatably supported on the inner bearing member 56, the principal contact being upon the boss-like upward projection. 59 of the inner member. The inner member has the machined peripheral groove 65 near its upper end in which is loosely received a pin-like projection 58 carried, by the outer bearing member Sa as by a set screw 52 in the radial wall of the latter. The outer bearing member in. its axial wall may. advantageously have an oil aperture 5.3 providing access for a lubricant to the meeting surf-aces of the parts, and to furtherreduce or minimize friction therebetween the inner bearing member may have a diametrically reduced intermediate portion 65.

In this construction shown in Figs. 4 and 5, the tray [6 is shown secured medially of the upper and lower ends of the outer bearing member 58, the outer bearing member having a reduced threaded shank 65 which passes downwardly through a central aperture 5i in the pressed metal tray I6, a nut 68 then clamping the margins of the aperture 61 to the shoulder 69 of the bearing member. The nut 58 also provides a supporting shoulder'ror the tray it received within the upwardly directed recess formed by the under side of the embossment 33 and in the plane of the embossment. The downwardly'dished formation 55 of the base 55 tends to compensate for the downwardly projecting extension 66' of the bearing member 58 and the bearing parts may be thus made smaller and more compact while at the same time retaining the advantages of stability and ease of rotation with. a minimum of friction.

So constructed and arranged, .thedevice is strong and yet simple, while providing a quiet and easily turned structure. In each case it will be noted that the base, and container interlock at points spaced inwardly from the outer edge of the container; one desirable result being that the interlocking means are concealed.

Having described my invention, I claim:

1. In a rotary support structure of the class U described, a pressed sheet metal tray of a gen. erally circular configuration, said tray having a central embossment upwardly pressed from the main portion of said tray, a plurality of other upwardly pressed embossments arranged circumferentially of said tray'and spaced apart from each other and from said central embossment. but whereby all of said embo-ssments are in a common plane offset upwardly of the main body portion of the tray to enhance the appearance and strength thereof, said circumferential embossments being adapted each to be. spanned by one of a pluralityvof containers or the likereceived on said tray about said central embossi ment and removably retained -in position on said tray by engagement each with one; of said circumferential embossments. 3

2. In a rotary support structureof the class described, a pressed sheet metal tray, said tray having a central. embossment upwardly pressed firom the main portion of saidtray and a centralperforation in said embossment, aplurality of other upwardly pressed, embossments arranged circnmferentially of said tray and spacedapart from each other and from saidgcentral embossment but whereby all of said embcssrnents are in a common plane offset upwardly of the'main body portion of the tray, anda bearing member passing through said central perforation and hav ing a shoulder. receiving and supportingthe edges thereof whereby saidshoulder is also in the plane of said embossments and spaced above the mainbody of the tray in the upwardly 6X? tending recess provided by=the said central errbossment' and enhancing the appearance; and strength of the structure. a :1

JACOB IFRUSSAKOV,

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