US2576252A - Oven - Google Patents

Description

Nov. 27, 1951 L, CONNER' 2,576,252

' OVEN Filed June 4, 1947 2 SHEETS-SHEET 1 n if INVENTOR. l e o n Co n n e r ATTORNEY L. CONNER Nov. 27, 1951 OVEN 2 SHEETS -SHEET 2 Filed June 4, 1947 L eon Conner INVENTOR.

ATTORNEY Patented Nov. 27, 1951 UNITED STATES PATENT OFFICE OVEN Leon Conner, Dallas, Tex.

Application June 4, 1947, Serial No. 752,324

3 Claims. 1

This invention relates to cooking ovens and more particularly to mechanism for extending oven racks when the oven door is opened and retracting the same when the door is closed.

The principal object of the invention is to provide an oven rack actuating mechanism which includes primarily a rack carriage adapted to travel in channel tracks on each side of and below the oven, said carriage supporting upright lower standards the latter, in turn, carrying detachable upper standards which support an oven rack or racks. Through and by virtue of a novel linkage between the oven door quadrant and the lower standards, the carriage is reciprocated as the oven door is opened and closed, causing the upper standards to be similarly moved in slots conventionally provided in the oven floor adjacent the side walls thereof and through which products of combustion enter the oven chamber.

Another object of the invention is to provide in one element of the carriage actuating linkage, a slot to cause delayed action of the carriage as the oven door is opened so that inspection of the cooking products may be made without moving the rack on which they are supported, said slot being ineffective to prevent intended displacement of the rack when the door is opened further.

Another object of the invention is to provide a cantilever support for one or more oven racks, the same consisting of a pair of vertically aligned protuberances on each of the upper rack supporting standards, and a single protuberance adjacent thereto and in line with the lowermost of the pair to support the side rails of the rack which lie between the said pair of protuberances. Thus, the rack is supported in a horizontal position in the manner described at a point rearwardly of its midsection for extension well out of the oven when the door is fully opened. Provision of more than one set of rack supporting protuberances on each upper standard enables the rack to be adjusted, vertically.

Broadly, the invention seeks to provide a simple mechanism for extending and retracting oven racks by door actuated supporting means extending upwardly through and movable in slots already provided in the oven bottom, thus affording such a mechanism for any and all types of ovens so equipped.

With the foregoing objects in view, the invention has further reference to certain features of accomplishment which will become apparent as the description proceeds, taken in connection with the accompanying drawings wherein:

Figurel is a perspective view of an oven with the walls removed and a portion of the door broken away to better show the invention installed therein.

Figure 2 isa transverse sectional view taken online 2-2 on Figure 4 but with the rack removed.

of the drawings, reference numeral l0 denotes generally a range having an oven compartment H and a broiler compartment 12. The invention can obviously be installed in ranges without broiler compartments provided the space below the oven is adequate. The usual insulation for g the oven walls has been omitted from the drawings for clarity.

In the bottom of what may be considered the broiler compartment l 2 and at each side thereof are channel tracks 13, the upper flanges of which serve as rails on which the foremost rollers I l (Figs. 4 and 5) operate and which latter support the forward end of a broiler drawer 15, the rear portion thereof being supported by rollers l5a which operate between the flanges of the channel tracks I3. Also operating between the flanges of these channel tracks are rollers [6 of a carriage consisting of members ll (Fig. 1) parallel with the channel tracks l3 and an interconnecting member [8 which extends from one to the other of said members ll beneath the broiler drawer IS.

The carriage, which will be hereinafter identified by reference numeral ll is free to move forwardly and rearwardly in the bottom of the broiler compartment 12, except that the forward movement is under restraint of a pair of coiled springs l9, one on each side and lying alongside the channel tracks I3. It will become apparent presently how these springs function as an aid in retracting the oven rack.

Mounted on and extending upwardly from each of the carriage members i l is a standard or upright 20, referred to as the lower standard. Each of these standards has a socket 2| on its inner face to receive an extension 22 carried, on the lower end of an upper standard 23. Thus, the upper and lower standards of each pair are in substantially vertical alignment with provision for easily and quickly detaching the upper from the lower standards if it is desired to remove the rack 24 and free the oven ll of the rack support.

It will be observed, especially in Figure 2 that the oven floor 25 is provided on each side with a longitudinal slot 26. These slots are conventional with many stove designs and are for the purpose of admitting into the oven the products of combustion of the oven burner, not shown. The upper standards 23 extend upwardly through and are movable in the slots 26, as shown.

To reciprocate the carriage I1 and consequently the standards 2823 and rack 24, a mechanism is provided, consisting of a link 21, pivoted at one end at a to the stove frame and at its other end at b to an end of a second link 28.

The opposite end of link 28 is pivoted at c to the bottom of a lower standard 20. Thus, when the links 27 and 28 are extended, as shown in Figure 4, the standards are disposed at the rear of the compartment I2 and when the links are collapsed or nearly so, as shown in Figure 5, the rack supporting standards are disposed near the front of the compartment l2, thus similarly positioning the rack 24.

To actuate the links as described and for the purpose set forth, an arm 29 is pivoted at one end at d to a curved arm or quadrant 30, the latter being affixed to the oven door 3| and slidable in a slot 32 in the stove frame when the door is operated. Adjacent the opposite end of arm 29 and longitudinal therewith is a slot 33 receiving a pin 34 in the intermediate arm or link 21.

It is apparent from the foregoing that as the oven door 3| is moved from closed position to open position, a pull will be exerted on the arm 29 through the quadrant 39 but displacing action of the pivoted links 21 and 28 will be delayed until the end of slot 33 comes up against the pin 34 of link 21. This delayed action permits the door 3| to be' partially opened to inspect the interior of the oven without moving the rack '24. If the rack is to be extended, the door 3i is moved to full open position, whereupon tension imposed on arm 29 will exert an upward force on link 21 which latter, upon movement thereof brings with it the link 28 and consequently the standards 20-23 and rack 24 supported thereby. When the door is closed, the action is reversed and the parts resume their positions as shown in Figure 4.

To support the rack on the upper standards 23, each of the latter is provided with vertically spaced sets of protuberances each set consisting of two protuberances 35, one above the other and between which the side of the rack frame 24 is disposed. At one side and slightly above the lower of the two protuberances 35 is a third protuberance 35 of the set and on which rests a portion of the rack frame, the latter being slightly bowed-at 3'! (Fig. 3) at its point of engagement with the protuberances 36 to preclude longitudinal displacement thereof with respect to its mounting.

It is apparent that while the rack 24 will be positively held by the described arrangement, it can be easily detached therefrom by the simple expedient of slightly elevating the front end and pulling the same forwardly. Vertical adjustment of the rack may be effected by removing the same and replacing it in another set of protuberances provided therefor.

Manifestly, the construction as shown and described is capable of some modification and such compartment mounted for horizontal fore and aft movement, an upright on said carriage adjacent each side wall of said lower compartment, a standard carried by each upright and extending through one of said slots in said floor, a rack detachably supported by said standards on a horizontal plane, a door for said oven, a pair of relatively pivoted links, the first of said links being pivoted to said upright, the second of said modification as may be construed to fall within 77 links being :pivoted to a stationary portion of said oven, a curved arm affixed at one end to said oven door and extending through a slot in the wall of said oven, and a slotted arm slidably connected through its slot to the midsection of said second link and to the end of said curved arm whereby movement of said door will actuate said links to effect fore and aft movement of said carriage and said rack.

2. In a cooking oven, a door on said oven, a horizontal floor defining a compartment below said oven and having slots adjacent the side walls of said oven, a carriage in said compartment mounted for horizontal fore and aft movement and having uprights thereon, standards on said uprights extending through and slidable in the slots of said floor, a rack horizontally disposed in said oven and supported by said standards, means carried by said standards for releasably holding said rack, a pair of links pivoted together atv one end, one of said links being pivoted at its opposite end to one of said uprights, the companion link being pivoted to a stationary part of said oven, an arm pivoted displaceably at one end to said companion link and means connecting the opposite end of said arm to said oven door whereby said carriage will be moved fore and aft as said oven door is opened and closed.

3. In an oven, a door therefor, a carriage below said oven mounted for horizontal fore and aft movement, a floor in said oven having slots adjacent the side walls of said oven, an upright on each side of said carriage extending through and slidable in a slot in said floor and having a socket on its upper end, a standard vertically disposed in said socket, a horizontal rack supported by the standards of said uprights, a pair of cooperating links, one of which is pivoted at one end to a stationary part of said oven, the companion link being pivoted at one end to the free end of said first link and connected operatively at its opposite end to one of said uprights, an arm having displaceable pivotal connection adjacent one end with said first link adjacent the midsection of the latter and means attached to said oven door and pivotally connected to the opposite end of said arm whereby to effect fore and aft movement of said carriage as said oven door is opened and closed.

LEON 'CONNER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,262,659 Foster Apr. 16, 1918 1,582,543 Rowden Apr. 27, 1926 1,785,514 Chandler et al Dec. 16, 1930 1,819,388 Rosselle Aug. 18, 1931 2,069,706 Gerwig et al Feb. 2, 1937 2,101,582 Hoff Dec. 7, 1937 2,139,989 Weiskittel Dec. 13, 1938 2,168,172 Rees Aug. 1,1939 2.319.651 Wilkinson et al May 18, 1943

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