US3049114A

US3049114A - Oven door mounting means

Info

Publication number: US3049114A
Application number: US14681A
Authority: US
Inventors: Leonard L Carnahan; Millard E Fry; George C Pearce; Jesse L Evans
Original assignee: Motors Liquidation Co
Current assignee: Motors Liquidation Co
Priority date: 1957-12-09
Filing date: 1960-03-14
Publication date: 1962-08-14
Anticipated expiration: 1979-08-14

Description

Allg. 14, 1962 L. L. CARNAHAN ETAL 3,049,114

OVER DOOR MOUNTING MEANS Original Filed Dec. 9, 1957 3 Sheets-Sheet 1 l. I leo |96 98 les l "lm `/I82 Si F N i |78 i@ V 39 I I AI I. VM

I- aa /NI/E/VTORS Leonard L. Corna/mn Mil/ard E. Fry

George 6'. Pearce BY Jesse L. Evans The/'r A//or ey Aug. 14, 1962 L. 1 CARNAHAN ETAL 3,049,114

OVER nooR MOUNTING MEANS Original Filed Deo. 9, 1957 3 Sheets-Sheet 2 w /l77 l ,232 l 230 Ego l 8 l l l I -J '2 N I F'g.5 l -|79 l I l 232 '1"""]'8"l l V' l f l 22e l l l I '2 J- /NvE/vro/Ps 2I6 220 218 L |4 Leonard L. Cama/:an

Mil/ard E. F ry v George C. Pearce Fl Z BY Jesse L. Evans llg- 14, 1962 L. L. CARNAHAN ETAL 3,049,114

OVER DOOR MOUNTING MEANS .Original Filed Dec. 9, 1957 3 Sheets-Sheet 3 /N VE/VTURS Leonard .Carnaan Mil/ard E. F ry George C. Pearce Jesse L. E?

3 Claims. (Cl. 126-191) This invention relates generally to oven doors of the drop type which `are hinged along the bottom thereof and swing outwardly and downwardly from a vertical .closed position to a substantially horizontal open position.

More specifically, this invention relates to an oven door which may be swung downwardly to a vertical out-of-the- Way position. This is a division of our copending U.S. application Serial Number 701,395 tiled December 9, 1957.

In the past, cleaning of ovens, either those in ranges or in the wall, has been a diflicult and disagreeable task. The manner'in which foods become burned on the hot surfaces of oven walls makes it diicult to keep the structures clean. Previously, elforts have been directed to making the oven door removable to facilitate access to the oven interior. However, this has not been completely satisfactory due to the complicated procedures involved in removing and replacing the oven doors. Persons using ovens equipped with removable doors are not generally inclined to make the mechanical adjustments necessary to the disassembly of the door from the oven. Hence, this feature is frequently ignored. This invention overcomes these objections and provides an oven door which may be placed in an out-of-the-way position without manually removing any of the oven parts.

Accordingly, it is an object of this invention to provide a range or wall oven with a drop type door which is supported by a novel exible cable arrangement.

It is also an object to provide an oven door which has a closed position, a slightly open broil position, a horizontal support position and a dropped out-of-the-way position.

An additional object is the provision of a single latch mechanism to accommodate the above positions, wherein a stop is adapted to limit the door travel in one position and a release manually operable, for permitting door travel to another position. In this regard it is also an object that such latch mechanism be adapted to reset automatically in a manner to similarly limit subsequent door travel in one position.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred'form of the present invention is clearly shown.

In the drawings: j

`FIGURES l, 2, 3, 4 and 5 illustrate an embodiment of this invention wherein PIG. 1 shows the latch mechanism and spring biased cable support in side View, with parts broken away, the oven door being in closed position;

FIGURE 2 shows a similar side view of the latch mechanism and door support cable, the oven door being in a horizontal support position;

FIGURE 3 is a front View of the side panel of the oven taken along line 3 3 in FIGURE 2 and showing a notched aperture through which the door support cable projects;

FIGURE 4 is a side view of the latch and cable structure, with the oven door in dropped position; and

FIGURE 5 is a side view of the latch with the oven door in a slightly open broil position.

Referring generally to FIG. 1, an oven is closed by 3,849,l 14 Patented 14mg. 1 4, 1962 a door 14 pivotally mounted on a combination hinge and roller catch support bracket 176. 'Ihe bracket 176 is supported at the front of and near the bottom of the side panel 39 of oven 10. A catch roller 177 is rotatably cal'- ried on a pin 181 extending between and secured to the bracket 176 and a parallel bracket 179 spaced from the iirst said bracket. At the top portion of the side panel 39 a bulkhead 178 serves to support the cable pulley and tensioning means. A pulley 180 is pivotally carried by a pulley bracket 182 secured to the bulkhead 178 near the front of the oven. At the rear of the oven a spring bracket 184 is similarly secured to the bulkhead 178 and has a lported ange portion 186 for retaining one end of'a cable tensioning spring 188. A cable 190 is fitted at one end with a cable stop 192 adapted to receive the other end of the tensioning spring 188. Attached to the bulkhead adjacent the pulley 180 is a catch bracket 194 having an aperture 196 through which the cable 190 is caused to pass. The bracket 194 cooperates with the cable stop 192 and provides the means whereby the cable travel is limited, the ange surface 198 abutting surface 200 of bracket 194 to eifect this stop.

With reference now to FIG. 2, the side panel 30 of oven door 14 is shown mounting a latch support bracket 202. Carried on the bracket 202 and pivotally mounted on a pin 204 is latch plate 206. The latch plate is formed kwith a hook 208 adapted for attachment of a U-shaped bracket and pin arrangement 210 securely lfastened to the cable 190. The latch plate is formed with a broil stop cam surface' 212 and a curved notch latch portion 214. At one end of the latch plate 206 a flange 216 is formed to carry a latch biasing band spring 218 secured thereto at 220. In order to place the spring 218 in latch actuating position, a bracket 222 is bolted to the side of latch support bracket 202 and formed with a hooked ilange portion 224 which engages one end of the spring 218. In this relationship it may thus be seen that latch plate 206 is adapted for rocking movement about pin 204, a latch plate ange 226 abutting support bracket 202 to limit rotation in one direction and the resiliency of band spring 218 urging the latch plate to rotate in the opposite =dil rection. The ball stop 228 is rigidly attached to the cable 190 at a point which will permit its engagement in a notch 230 along one side of an aperture 232 through which the cable 190 issues to support the door 14 (FIG..3). The utilization of this ball stop 228 in connection With the door release feature of this invention will be described more fully hereinafter.

`Various facets of this particular embodiment will now be explained in connection with a sequence of door operations including a closed position, a broil position, a horizontal support position and a dropped out-of-the-way position. With reference to FIG. 1, the oven door 14 is urged into a snug t with oven 10 by the combined biasing eimiects of the spring 188 maintaining tension on cable 190 and the band spring 218 urging the latch plate 206 into engagement with roller catch 177. In this regard, the cam surfacejof latch plate notch 214 aids in maintaining a tight seal between the juxtaposed surfaces of door 14 and oven 10.

As the door 14 is pulled outwardly and downwardly, the latch plate 206 is caused to pivot slightly in a clockwise direction as the hump portion 215 of the latch plate passes under the roller 17'7. After the door opens slightly, the bias of band spring 218 returns the latch plate 206 to its normal position perpendicular to the surface of the oven door 14. In this relationship (FIG. 5) a broil stop position is attained with the combined tensioning of

springs

218 and 188 suicient to retain latch plate 206 in a position adjacent the roller catch 177 and thus the door 14 ina slightly open position.

When it is desired to open the door 14 to a position which will accommodate the support of cooking utensils or other objects, the pivotal motion of the door 14 is continued tothe relationship shown in FIG. 2. As the door moves from a vertically upward to a horizontal position, the cable stop 1921` moves from a position adjacent the rear of the oven to a position abutting stop bracket 194. In response to this operation, the spring 188 is expanded and thereby imposes an opposing bias to this travel. At the point Where cable stop 193 abuts the bracket 194 the oven door 14 is securely retained in its horizontal position. As the end section 210 of the cable follows the door outwardly, the cable 190 rides over pulley 180 in the top of the oven and roller catch pulley 177 adjacent the aperture 232. The ball stop 228 is sized in a manner that it ywill not throw the cable from the groove of pulley 177 and will pass through the aperture 232. However, the ball stop 228 must be larger than the notch 230 for the punpose next described.

Where it is desired to release the door 1,4 for downward pivotal movement the cable 190 is forced side- Wardly into the notch 230, as suggested in FIG. 3. With the cable in this position the oven door 14 is lifted slightly to penmit ball stop 228 to bear snugly against the front surface of notch 230. The ball stop 228 will remain engaged in the notch 230 due to the tension retained on the cable by spring 188. The end piece 210 is then removed manually from the hook portion 208 of the latch plate 206 and the oven door 14 lowered to its out-of-the-v/ay position, as best seen in FIG. 4. The end of the cable 190 on the outboard side of the ball stop 228y Iwill hang loosely at the side of the oven 10. When it is desired to place the oven door again in operative position, the door is raised to a .position wherein cable end piece 210 may again engage the hook 208 of the latch plate. The door 210 is allowed to move downwardly so that the ball stop 22SV may be pulled from its position in the notch 230'. The oven door and latch mechanism is now in normal operative condition and the oven maybe closed as per previously described operations. l

While the form of embodiment of the invention as herein disclosed constitutes a preferred form, it is to be understood that' other forms might be adopted, as may come :within the scope of the claims which' follow.

What is claimed is as follows: y Y

l. In combination, a frame defining an oven compartment having a peripheral front wall, said front wall having an oblong opening, a door for closing said oven compartment', means for unobstnuctingly supporting said door for pivotal movement between an upstanding vertically closed position, a partly open broil position, a generally horizontal support position and a vdepending generally vertical open position, a support bracket connected to said frame, a catchroller pivotally xed on said bracket, a latch plate having a hump portion pivotally mounted to said door in juxtaposition to said catch roller when said door is in said closed position and said broil position, said hump portion having a door closed surface on one sidev of said hump and a broil stop cam surface on the other side of said hump, and spring means having one end connected to said door and the other end to said latch plate in closer proximity to said door closed surface than said cam surface for biasing said door closed surface into engagement with said catch roller when said door is in said closed position and for biasing said broil stop cam surface into engagement with said catch roller when said door is in said broil position and a retractable exible bond guided by said catch roller and having one end connected to said latch plate in closer proximity to said cam surface than said door closed surface and having its other end resiliently connected to said frame.

2. In combination, a frame deiining an oven compartment, a door for closing said oven compartment, means for yunobstructingly supporting said door for pivotal movement between an Iupstanding vertically closed position, a partly open broil position, a generally horizontal support position and a depending generally vertically open position, a catch roller on said frame, a latch plate pivotally mounted to said door in jutaposition to said catch roller when said door is in said closed position and said broil position, said latch plate having a door closed portion and a broil stop portion, and spring means connected to said door and said latch plate for biasing said door closed portion into engagement with said catch roller when said door is in said closed position and for biasing said broil stop portion into engagement with said catch roller when said door yis in said broil position.

3. In combination, an oven having a frame, said frame having a front Wall defining an opening to said oven, a door on said frame for `selectively covering said front wall, a striker pivotally mounted on said door, means for supporting said door for pivotal movement throughout substantially including a flexible bond connected to said striker and carrying an enlarged portion, means for tensioning said bond, and means for selectively latching said door comprising, a protuberance on Isaid frame, spring means having one end connected to said striker and the other end connected to said door for biasing said striker for pivotal movement in one direction only and for engaging said striker with said protuberance in a iirst position to close said door and in a second position to hold said door slightly open, a latch flange on said frame for cooperating with said enlarged portion to limit the pivotal movement of said door at a third position, and means for releasing the limiting effect resulting from cooperation of said enlarged portion Vand said latch ilange thereby to release said door for pivotal movement beyond said third position, said releasing means including means on said front Wall for establishing a cooperating relationship with said flexible bond during the movement of said door beyond said third position diierent from the relationship established when the door is in said rst and second positions.

References Cited in the tile of this patent UNITED STATES PATENTS 1,669,802 Armstrong May 15, 1928 2,313,582 Rees c Mar. 9, 1943 2,725,052 Barnett Nov. 29, 1955 2,833,270 Brown et al. May 6, 1958 2,859,744 Hadley Nov. ll, 1958