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Патент USA US3049125

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Allg. 14, 1962
L. L. CARNAHAN ETAL
3,049,114
OVER DOOR MOUNTING MEANS
Original Filed Dec. 9, 1957
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/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
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218
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Leonard L. Cama/:an
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Mil/ard E. Fry
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George C. Pearce
BY Jesse L. Evans
Àllg~ 14, 1962
L. L. CARNAHAN ETAL
OVER DOOR MOUNTING MEANS
.Original Filed Dec. 9, 1957
3,049,114
3 Sheets-Sheet 3
/N VE/VTURS
Leonard ¿.Carna?an
Mil/ard E. Fry
George C. Pearce
Jesse L. E?
3,849,l 14
Patented 14mg.- 1_4, 1962
.2
3,049,114
‘
OVEN DÜOR MGUNTING MEANS
Leonard L. Carnahan, Millard E. Fry, and George _C.
Pearce, Dayton, and Jesse L. Evans, Tipp City, Ohra,
assignors to General Motors Corporation, Detroit,
Mich., a corporation of Delaware
_
Original application Dec. 9, 1957, Ser. No. 701,395. Di
vided and this application Mar. 14, 1960, Ser. No.
14,681
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.
a door 14 pivotally mounted on a combination hinge and
roller catch support bracket 176. 'I‘he 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 ñange 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 ad
jacent the pulley 180 is a catch bracket 194 having an
aperture 196 through which the cable 190 is caused to
1957.
pass. The bracket 194 cooperates with the cable stop 192
In the past, cleaning of ovens, either those in ranges 20 and provides the means whereby the cable travel is limit
or in the wall, ‘has been a diflicult and disagreeable task.
ed, the ñange surface 198 abutting surface 200 of bracket
The manner'in which foods become burned on the hot
194 to eifect this stop.
surfaces of oven walls makes it diñicult to keep the struc
With reference now to FIG. 2, the side panel 30 of
tures clean. Previously, elforts have been directed to
oven door 14 is shown mounting a latch support bracket
making the oven door removable to facilitate access to 25 202. Carried on the bracket 202 and pivotally mounted
the oven interior. However, this has not been completely
on a pin 204 is latch plate 206. The latch plate is formed
satisfactory due to the complicated procedures involved in
kwith a hook 208 adapted for attachment of a U-shaped
removing and replacing the oven doors. Persons using
bracket and pin arrangement 210 securely lfastened to the
ovens equipped with removable doors are not generally
cable 190. The latch plate is formed with a broil stop
inclined to »make the mechanical adjustments necessary to 30 cam surface' 212 and a curved notch latch portion 214.
the disassembly of the door from the oven. Hence, this
At one end of the latch plate 206 a flange 216 is formed
feature is frequently ignored. This invention overcomes
to carry a latch biasing band »spring 218 secured thereto
these objections and provides an oven door which may be
at 220. In order to place the spring 218 in latch actuat
placed in an out-of-the-way position without manually
ing position, a bracket 222 is bolted to the side of latch
removing any of the oven parts.
35 support bracket 202 and formed with a hooked ilange por
Accordingly, it is an object of this invention to pro~
tion 224 which engages one end of the spring 218. In
vide a range or wall oven with a “drop” type door which
this relationship it may thus be seen that latch plate 206
is supported by a novel ñexible cable arrangement. »
is adapted for rocking movement about pin 204, a latch
It is also an object to provide an oven door which has
plate ñange 226 abutting support bracket 202 to limit ro
40
a closed position, a slightly open broil position, a hori
tation in one direction and the resiliency of band spring
zontal support position and a dropped out-of-the-way po
218 urging the latch plate to rotate in the opposite =di-l
sition.
rection. The ball stop 228 is rigidly attached to the cable
An additional object is the provision of a single latch
190 at a point which will permit its engagement in a
mechanism to accommodate the above positions, wherein
notch 230 along one side of an aperture 232 through which
a stop is adapted to limit the door travel in one position 45 the cable 190 issues to support the door 14 (FIG..3).
and a release manually operable, for permitting door
The utilization of this ball stop 228 in connection With the
travel to another position. In this regard it is also an
door release feature of this invention will be described
object that such latch mechanism be adapted to reset auto
more fully hereinafter.
matically in a manner to similarly limit subsequent door
`Various facets of this particular embodiment will now
50
travel in one position.
be explained in connection with a sequence of door op
Further objects and advantages of the present invention
erations including a closed position, a broil position, a
application Serial Number 701,395 tiled December 9,
will be apparent from the following description, reference
being had to the accompanying drawings, wherein a pre
ferred'form of the present invention is clearly shown.
In the drawings:
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 ñt with oven 10 by the combined bias
55
j
ing eimiects of the spring 188 maintaining tension on cable
`FIGURES l, 2, 3, 4 and 5 illustrate an embodiment of
190 and the band spring 218 urging the latch plate 206
this invention wherein PIG. 1 shows the latch mechanism
into engagement with roller catch 177. In this regard,
and spring biased cable support in side View, with parts
the cam‘ surfacejof latch plate notch 214 aids in main
broken away, the oven door being in closed position;
taining a tight seal between the juxtaposed surfaces of
60
FIGURE 2 shows a similar side view of the latch
door 14 and oven 10.
mechanism and door support cable, the oven door being
As the door 14 is pulled outwardly and downwardly,
in a horizontal support position;
the latch plate 206 is caused to pivot slightly in a clock
FIGURE 3 is a front View of the side panel of the oven
wise direction as the hump portion 215 of the latch plate
taken along line 3_3 in FIGURE 2 and showing a
passes under the roller 17'7. After the door opens slightly,
65
notched aperture through which the door support cable
the bias of band spring 218 returns the latch plate 206 to
projects;
its normal position perpendicular to the surface of the
FIGURE 4 is a side view of the latch and cable struc
oven door ‘14. In this relationship (FIG. 5) a broil stop
ture, with the oven door in dropped position; and
position is attained with the combined tensioning of
FIGURE 5 is a side view of the latch with the oven
70 springs 218 and 188 suñicient to retain latch plate 206 in
door in a slightly open broil position.
a position adjacent the roller catch 177 and thus the door
Referring generally to FIG. 1, an oven 10 is closed by
14 ina slightly open position.
3,049,114
4
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 posi
tion, the cable stop 1921` moves from a position adjacent
the rear of the oven 10 to a position abutting stop bracket
194. In response to this operation, the spring 188 is ex
panded 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.
proximity to said door closed surface than said cam sur
face 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 ñexible 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 compart
ment, a door for closing said oven compartment, means
for yunobstructingly supporting said door for pivotal move
ment between an Iupstanding vertically closed position, a
partly open broil position, a generally horizontal support
position and a depending generally vertically open posi
tion, 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
Where it is desired to release the door 1,4 for down 20 position, said latch plate having a door closed portion and
a broil stop portion, and spring means connected to said
ward pivotal movement the cable 190 is forced side
door and said latch plate for biasing said door closed
Wardly into the notch 230, as suggested in FIG. 3. With
portion into engagement with said catch roller when said
the cable in this position the oven door 14 is lifted slightly
door is in said closed position and for biasing said broil
to penmit ball stop 228 to bear snugly against the front
stop portion into engagement with said catch roller when
surface of notch 230. The ball stop 228 will remain en
said door yis in said broil position.
gaged 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
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,
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 30 a striker pivotally mounted on said door, means for sup
porting said door for pivotal movement throughout sub
190 on the outboard side of the ball stop 228y Iwill hang
stantially 180° including a flexible bond connected to said
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'.
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 engag
The oven door and latch mechanism is now in normal
ing said striker with said protuberance in a iirst position
operative condition and the oven maybe closed as per
previously described operations.
l 40 to close said door and in a second position to hold said
door slightly open, a latch flange on said frame for coop
While the form of embodiment of the invention as
erating with said enlarged portion to limit the pivotal
herein disclosed constitutes a preferred form, it is to be
understood that' other forms might be adopted, as may ' movement of said door at a third position, and means for
releasing the limiting effect resulting from cooperation of
come :within the scope of the claims which' follow. '
45 said enlarged portion Vand said latch ilange thereby to? re
What is claimed is as follows: ì
y
Y
lease said door for pivotal movement beyond said thirdÁ
l. In combination, a frame defining an oven compart
position, said releasing means including means on said
ment having a peripheral front wall, said front wall having
front Wall for establishing a cooperating relationship with
an oblong opening, a door for closing said oven compart
said flexible bond during the movement of said door be
ment', means for unobstnuctingly supporting said door for
pivotal movement between an upstanding vertically closed 50 yond said third position diiîerent from the relationship
established when the door is in said ñrst and second
position, a partly open broil position, a generally horizon
positions.
`
tal support position and a vdepending generally vertical
open position, a support bracket connected to said frame,
References Cited in the tile of this patent
a catchroller pivotally ñxed on said bracket, a latch plate
having a hump portion pivotally mounted to said door 55
UNITED STATES PATENTS
in juxtaposition to said catch roller when said door is in
said closed position and said broil position, said hump
1,669,802
Armstrong ____-_ _______ __ May 15, 1928
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 60
said door and the other end to said latch plate in closer
2,313,582
Rees _______ _c _____ __'___ Mar. 9, 1943
2,725,052
2,833,270
Barnett ______________ ..._ Nov. 29, 1955
Brown et al. _; ________ _.. May 6, 1958
Hadley ______________ __ Nov. ll, 1958
2,859,744
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