US1817961A - Bread rack - Google Patents

Description

Aug. 11, 1931. B. BouDA BREAD RACK Filed Feb. 10. 1950 ou /m Patented Aug. 11, 19321 STATES BOHUMIL BOUDA, OF CLINTON, IOWA, ASSIGNOR TO THE GOLLIS COMPANY, OF CLINTON, IOWA, A CORPORATION OF IOWA BREAD RACK Application filed February 10, 1930.

4;. for purposes of loading or unloading. The

shelves are so mounted that only a slight eort is necessary to move them from operative to tilted position and vice versa, and the shelves are automatically held in either "s position into which they are moved.

The invention will readily be understood from the following description taken in conjunction with the accompanying drawings, in which- Figure 1 is a fragmentary perspective view of the upper portion of a rack embodying my invention, the two upper-most shelves being tilted, the shelf therebelow being in normal or horizontal position,

Fig. 2 is an end elevation of the rack, and

Fig. 3 is a sectional plan on the line 3 3 of F ig. 2.

Referring to the drawings the rack strucy ture may comprise a frame having four corner uprights, those at front being designated and those at the rear as 11. The four uprights are connected at their upper ends to a rectangular frame 12 and their lower ends to a similar frame 13 which may suitably be mounted upon casters 111 whereby the entire rack may be moved about with ease. The several rack parts just described may suitably be formed from tubular members of square cross-section, connected by suitable corner braces 15.

The rear uprights 11 carry a series of forwardly extending lugs 16 to which the shelves 17 are pivotally connected by the bolts 18. The forward uprights 10 are provided with series of shelf supports 19, which may suitably be constituted by small pieces of angle iron, welded or otherwise secured to the uprights 10.

Each shelf 17 comprises end strips 2O con- Seral No. 427,188.

nected together near their extremities by side members 21, suitably formed of angle iron. Between the side members 21 extend wires or rods 22, which are secured to the side members 21 in any suitably manner, for example by spot welding. 'Each end strip is provided near its rear extremity Aand preferably near its lower most edge with an opening whereby the shelf may be pivotally secured-to the lugs 16 by the bolts 18. At a point somewhat forward of the pivotal support, is secured to each end strip 20 a depending leg 23, the lower end of which is turned upwardly and is provided with openings 24 adapted to receive a hooked end of a tension spring 25. The upper end of the tension spring 25 may suitably be secured to the bolt 18 of the shelf next above. The upper-most spring 25 may be secured at its upper end to a bolt 18 carried by the frame of the rack.

rlhe strength of the tension springs 25 is such that the shelves 17 may remain in their horizontal position as shown in the lower portion of Fig. 2 or may remain in tilted position as shown in the upper portion of Fig. 2 without any other engaging means. lVhen ya shelf is in its horizontal position the leverage of its springs 25 is relatively slight, whereas the leverage of the shelf as a whole is at its maximum. When, however, a shelf is tilted by hand, the leverage of the tension springs 25 is increased, while the leverage of the shelf as a whole is decreased. Thus, by selecting springs of suitable strength in comparison with the weight of the shelf a mounting is obtained so that by merely moving the shelf into horizontal position or into tilted position, it remains in that position until further adjustment. Furthermore, since the shelf is substantially balanced in either position, it requires very little effort to raise or lower it from one position to the other.

Although the invention has been described in connection with the details of a specific embodiment thereof, it is to be understood that such details are not intended to be limitative of the invention, except insofar as set forth in the accompanying claims,

nset Yinv Yln I claim:

1. A rack comprising a frame, a plurality of shelves pivotally mounted therein in superimposed and spaced relation, means continuously applying an upward force on each shelf in its horizontal position and adapted to apply a force upon the shelf at a greater distance from its support when tilted to an upward position.

2. A rack comprising a frame, a plurality of shelves pivotally mounted therein in superimposed and spaced relation, resilient means continuously exerting` an upward force upon each shelf and connected to the trame and to the shelf in such a manner that in the horizontal position of the shelf the resilient means is relatively close to the axis of support so that the upward force exerted thereby is insufficient to elevate the shelf and in the tilted position of the shelf the resilient means is more remote from the axis of support so that the upward force exerted thereby is sufficient to maintain the shelf in tilted position.

3. A rack comprising a frame, a plurality of shelves pivotally mounted therein in superimposed and spaced relation, a leg depending from each end of a shelf adjacent its axis of support, and tension springs connecting the lower end of each leg to the frame at its axis of support of the shelf next above.

4. In combination, a shellA pivoted adjacent one side, a member rigidly carried by, and depending from said shelf adjacent its axis of support, and a tension spring connecting the lower end of said depending member to a stationary point above the axis Ved;support ,l l l In testimony whereof, I have hereunto id,andirdrmenV ay seal this 6th day of February, 1930.

BOHUMIL BOUDA.

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