US1387950A - Adjustable shelf-support - Google Patents

Description

G. R. SPERL AND A. W. MIE'R OW.

ADJUSTABLE-SHELF SUPPORT. APPLICATION FILED APR. 29. 1920.

1,387,950. Patented Aug. 16,1921.

ATTORNEYS entree STATES PATENT-- osrrcs.

GUSTAV IR. SPERL AND ARTHUR W. MIEROW, OF MILWAUKEE, WISCONSIN ADJUSTABLE SHELF-SUPPORT. v

Specification of Letters Patent.

Application filed April 29, 1920; Serial No. 377,611.

To all whom it may concern:

Be it known that we, GUSTAV R. SPERL and ARTHUR V. MIEROW, citizens of the United States, and residents of Milwaukee,

in the county 'of Milwaukee and State of -lVisconsin, have invented new and useful Improvements in Adjustable Shelf-Supports, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification. I

The present invention relates to certain new and useful improvements in shelf or rack supports for ovens, and refers more particularlyto adjustable shelf supports.

Numerous adjustable shelf supports have been devised, but all of these have been objectionable as they accommodate but one shelf which is not removable and they are also very complicated in construction andv consequently expensive to produce.

Hence with the above and other objections in mind this invention has for one of its objects to provide an adjustable shelf support for ovens in which one or more shelves may be accommodated and in which the shelves are removable.

Another object of this invention is to provide an. adjustable shelf support for ovens which will be of extremely simple construction and consequently comparatively in.- expensive to produce and which will be efficient and positive in operation.

A further object of the present invention is to provide an adjustable shelf support for ovens having means exteriorly of the ovens for permitting the ready adjustment thereof and having simple and efiicient means for retaining the same in adjustable position.

A more specific object of this invention is 'to provide a shelf supporting frame which is so constructed and guided upon guide rods as to provide a strong but'light' shelf su port.

ith the above andother objects in view I which will appear as the description proceeds, our invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter ,described and more particularly defined by the appended claims, it being understood that such changes "in the precise embodiment of e the herein disclosed invention may be made as come withint'he scope of the claims.

In the accompanying drawing we have illustrated one complete example of the physical embodiment of o ur invention constructed according to the best mode we have so far devised for the practical applicat1on of the principles thereof, and in which:

Figure 1 1s a view looking at the front of an oven equipped with our improved adustable shelf support, the oven door being open to permit a view of the device;

1g. 2 IS a fragmentary view part in sectlon and part in elevation illustrating the manner of guiding the adjusting cables, said view being taken on the plane indicated by the line 22 of Fig. 1;

1g 3 is a fragmentary perspective view of anlnterior of an oven illustrating our improved adjustable shelf support, parts there of being broken away; an

Fig. 4 is a detailed perspective view of the means employed for retaining the shelf su port in an adjusted position.

eferring now more particularly to the Patented Aug. 1 6.1921,

accompanying drawing, 5 designates an oven of any desired construction having its bak ng compartment normally closed by a door or the like 6, and 7 designates a shelf or rack positioned within the baking compartment and upon which is rested the food being cooked.

In-the present instance, the shelf 7 is arranged to be raised or lowered by means p0- sitioned outwardly of the oven to control the heat to the article being baked by moving the shelf nearer to or farther from the upper part of the oven and to also permit the circulation of the warm air beneath the shelf. In the present instance this is accomplished by our improved form of shelf support and means for adjusting the same now about to be described.

Mounted in the oven near each corner thereof is a vertical rod 9. securedin position in any desired manner and having mounted thereon a tubular guide portion 10 of substantially U-shape in cross section. The tubular portions 10 have laterally directed ears 11 formed on their upper and lower ends to which are secured channeled members 12 which connect the tubular por-- tions 10 at each side of the oven. The channeled members 12 provide the racks for removably receiving the shelves 7 and also serve to retain the tubular portions upon the rods 9 as best shown in Fig. 3.

The tubular portions 10 provide the guide means for the adjustable shelf support and also prevent the tipping of the support and provide meansvfor forming a strong structure. The framework thus formed is further braced by two transverse bars 13 connecting the forward ends and the rear ends to the lowermost channel members 12 as best shown in Figs. 1 and 3. This construction provides a shelf support which is freely movable verticallyupon the guide rods, and means are provided for moving the same to different positions of adjustment without the necessity of opening the oven door.

The means for adjusting the shelf support comprises two flexible cables 14 and 15.

connected to the lowermost channel members 12 medially of their ends. The cable 14 passes upwardly from its channel member 12 and is guided over a pulley 16 journaled in a bracket 17 secured to'the side wall of the oven near the top thereof and passes across the oven and is then trained about a guide pulley 18 secured on the outside of the opposite side wall of the'oven in a bracket The cable 15 passes upwardly from its channel member 12 and is guided over a pulley 20 secured in a bracket 21 fixed to the adjacent oven wall near the top thereof, and passes through the upper .wall and then downwardly over a pulley 22, also secured in the bracket 19.

The ends of the cables 14 and'15" positioned outwardly of the oven are then secured as at 23 to the upper end of a linked cable or chain 24 which has a handle 25 secured to its other end. As will be readily obvious, when the handle 25is pulled downwa'rdly, the shelf support will be raised and when the pull thereof is released the oven shelf will be permitted to lower, and the shelf supporting frame is retained in adjusted position by means readily releasably engaging the chain 24.

The means for retaining the shelf support in adjusted position consists of a latch member 26 secured as at 27 to the outer wall of the oven adjacent the chain 24 and having a reduced downwardly curved end 28 which is engageable within any one of the links forming the chain 24. When the shelf support has been moved to the desired adjusted position the same is secured therein by engaging the end 28 of the latch member within the link bf the chain there adjacent, and when it is desired to change the adjustment of the oven the link is disengaged from the latch member by pulling downwardly and outwardly on the handle 25.

What we claim as our invention is:

1. In a device of the class described, the Q combination of a plurality of guide rods, a shelf, a-plurality of members associated with said shelf and slidably engaging said .respec tive rods, said members cooperating with said rods to maintain said shelf substantially horizontally when it is raised or lowered, and a cable associated with said shelf for rajising or lowering the shelf relative to said. ro s.

2. In a device of the class described, the combination'of a plurality of guide rods, a shelf supporting frame, a plurality of members carried by said frame and slidably engaging said respective rods, said members cooperating with said rods to maintain said frame substantially horizontally when the frame is raised or lowered, and a cable connected to said frame for raising or lowering the frame relative-to said rods.

3. In an oven, the combination of a plurality of substantially vertical guide rods rigidly positioned'in said oven, a shelf,.a plurality of members associated with said shelf and slidably engaging said respective rods, said members cooperating with said rods to maintain said shelf substantially horizontally when it is raised or lowered,

cables connected to said shelf, and pulleys Y mounted in the upper portion of the oven over which said cables run whereby said shelf may be raised or lowered relative to said rods.

4. In anoven, the combination of a plurality of substantially vertical guide rods rigidly positioned in said oven, a shelf, a plurality of members associated with said shelf and slidably engaging said respective rods, said members cooperating with said rods to maintain said shelf substantially horizontally when it is raised or lowered, pulleys mounted in the upper portion of the oven, cables leading from the outside of said oven and running over said pulleys,'the inner ends of said cables being connected to said shelf, and a hook member secured to the outer side of said oven to which the outer ends of said cables may be connected, whereby said shelf. may be maintained at various elevations on said rods.

In testimony whereof we affix our signatures.

GUSTAV R. SPERL. ARTHUR W. MIEROW.

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