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Патент USA US3046984

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July 31, 1962
Filed Nov. 2, 1960
4 Sheets-Sheet l
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July 31, 1962
Filed Nov. 2, 1960
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July 31, 1962
Filed Nov. 2, 1960
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Walter R. Kimberley, Signal Mountain, Tenn., assignor
to Samuel Stamping & Enameling Company, Chatta
nooga, Tenn., a company of Tennessee
Filed Nov. 2, 1960, Ser. No. 66,764
5 Claims. (Cl. 126-191)
This invention relates to a door stop mechanism in
tended more particularly for use in connection with bot
tom hinged cooking oven doors. Oven door stop mecha
nism, as heretofore ordinarily constructed, permitted the
doors to be swung down only to horizontal position when
access was to be had into the oven interiors.
Patented July 31, 1962
to the outer vface of the side wall within the recess 16 in
the upper frontal corner of the latter, is a forwardly
extending spring ?nger 31 provided at its free end with
a roller 32 which is adapted to cooperate with the latch
bar 17 and with a cam hump 19a on the lug 19 at the
back of the door 11 in a manner also presently explained.
When the oven is to be used vfor baking for example,
the door 11 may be swung to the slightly open position of
FIG. 5 incident to which the roller 32 of the spring ?nger
31 overrides the cam hump 19a of the lug 19 and is
brought ‘behind it to bear downwardly on the latch bar
17. As a consequence, the latch bar 17 is constrained
The chief aim of my invention is to provide a simple 15 to prevent the door from being closed by the pull of the
spring 20. When access to the oven chamber is required
ing oven doors can be stopped not only in horizontal
to insert food in preparation for cooking, or to Withdraw '
open position for access into the oven chamber to intro
it after cooking, the door 11 can be swung down to the
duce and remove the food in preparation for and after
horizontal position of FIG. 6 in which position it is
baking or cooking, but also in slightly open position as 20 stopped and positively held by engagement of the hook
desired or considered advantageous in diiferent uses of
171; of the latch bar 17 with the stop 30 as in- FIG. 6,
the oven, as well as in a position of vertical suspension
the spring ?nger 31 keeping the roller 32 pressed down
completely out of the way, to render the oven chambers
upon the latch bar 17 to prevent accidental disengage
accessible for greater convenience in cleaning them.
ment of the hook of said bar from said stop roller. Be
Other objects and attendant advantages will appear
fore the door 11 can be swung down to the position of
from the following detailed description of the attached
vertical suspension in which it is shown in FIG. 7, the
drawings, wherein:
latch bar 17 must be ?rst lifted by hand in opposition to
FIG. 1 is a view, partly in side elevation and partly
the downward pressure of the spring biased roller 32 to the
in vertical section, of a cooking oven with door stop
broken line position of FIG. 6 and then pulled forwardly
means embodying my invention;
slightly to clear the hook 171) from the stop roller 30,
FIG. 2 is a broken out View in horizontal section taken
whereafter the door can be depressed in opposition to
as indicated by the angled arrows II—II in FIG. 1;
the pull of the retracting spring 20. With the door
FIGS. 3 and 4 are detail views in section taken as in
lowered to the out of the way position of vertical sus
dicated respectively by the ‘angled arrows III-III and
pension in FIG. 7 to provide fuller access to the oven
IV-IV in FIG. 1, and
chamber for cleaning, it will v‘be noted that the pivotal
FIGS. 5, 6 and 7 are views similar to FIG. 1 respec
connection 18 of the latch bar 17 with the lug 19 on
tively showing how the door is stopped in a slightly open
the door 11 is well below the line or plane X—X ex
position, open in horizontal position, and in a position of
tending through the center of the hinge center and the
vertical suspension.
center of the pulley 23. As a consequence, the spring
A cooking oven herein illustrated and comprehensively
20 is impotent to cause the door 11 to be swung back
designated by the numeral 10 is quadrangular designated
toward closed position. As the door 11 is lifted in clos
in con?guration and adapted to be set into a kitchen wall
ing it subsequently, the hook projection 17b on the latch
at a suitable elevation from the ?oor, its frontal door 11
bar overrides the stop roller 30, and the cam projec
being swingable outwardly and downwardly about a hinge
tion 19a of the lug 19 on the door upwardly displaces
12 along the bottom of the door opening.
45 the spring biased roller 32 to permit the door to be re
Preferably, but not necessarily, a stop mechanism of
turned to the normal closed position of FIG. 1 by the
my invention generally designated 15 is utilized at each
pull of the spring 20.
side of the oven, and the lower portion of the correspond
While in accordance with the provisions of the statutes,
ing side wall of the oven is recessed as at 16 to provide
1 have illustrated and described the best forms of em
a clearance space for accommodation of the mechanism. 50 bodiment of my invention now known to me, it will be‘
As shown, the mechanism 15 comprises an inwardly
apparent to those skilled in the art that changes may be
reaching latch bar 17 which is pivotally connected at 18
made in the forms of the apparatus described Without
to a lug 19 extending rearwardly from the door 11 im
departing from the spirit and scope of the invention as
mediately adjacent a side edge thereof well above the
set forth in the appended claims, and that in some cases
hinge 12. The distal end of the latch bar 17 is rounded 55 certain features of my invention may be used to ad
downwardly on a liberal curve as at 17a and somewhat
vantage without a corresponding use of other features.
forward of its distal end, is formed with a hook notch
Having thus described my invention, I claim:
17b at the bottom. A helical tension spring 20 is con
1. The combination with an oven or the like having
nected at one end to a ?xed anchorage 21 at the back
an access opening in the upper part of its front, a door
of the oven casing 10, and to the other end is attached a 60 for said opening, and a hinge connecting the door to
block 22 in which a small pulley 23 is journalled. Con
the bottom edge of said opening, of door mechanism
nected at one end to the distal end of the latch bar 17
comprising a catch element located at one side of the
is a ?exible cord or cable 25 which is retroverted about
oven somewhat above the level of the oven ?oor; a rear
the pulley 23 and has its other end a?ixed to the horizon
wardly extending latch bar pivotally connected at one
tal leg otfan angular bracket piece 26 secured to the outer 65 end to the back of the door adjacent one side edge there
face of the recessed lower portion of the corresponding
of at a distance from the door hinge and adapted to over
side Wall of the casing at the bottom corner of the recess.
ride the catch element, said bar having at an intermedi
As a consequence of the construction thus far, the door
ate point in its bottom edge a hook projection to coop
11 is yieldingly held normally in the closed position of
erate with said stop element in holding the door horizon
FIG. 1. A roller 30 at the top of the upright leg of the 70 tally in open position and also a hook projection at its
piece 26 is adapted to cooperate with the latch bar 17
distal end; and means connected to the distal end of the,
as and for a purpose presently explained. Screwed fast
latch bar for yieldingly resisting opening of the door and
inexpensive and reliable stop mechanism by which cook
permitting said bar to be lifted to disengage its inter
mediate hook from the catch element after the door has
a pulley at the other end of the spring; and a cord or
cable connected at one end to the ‘distal end of the latch
been swung to horizontal position, so that the door can
be further moved to a position of vertical suspension out
of the way for full access to the oven chamber stopped
bar, said cord or cable being retroverted about the pulley
and having its other end connected to a ?xed anchorage
adjacent the bottom of the oven at the front.
5. A door stop mechanism characterized as in claim 1;:
wherein the vlatch bar is pivoted to the rluglat the back
by engagement of the hook projection at’ the distal end
of said bar with said stop element:
of the door, said lug having an upward cam projection
and further including a spring ?nger by which the' latch
2. A door stop mechanism characterized as in claim 1,
vwherein the catch element is in the form of a stationajrily
supported roller.
bar is yieldingly ‘depressed and which, by ‘cooperation
with the cam projection‘on the aforesaid lug servesto'
hold the door yieldingly in slightly open position.‘
3. A door stop mechanism characterized as in claim
1, wherein the parts of the stop mechanism are all ac
commodated in an inward recess formed in the corre
sponding side wall of the oven when the door is closed.
4. A door stop mechanism characterized as in claim 1, lo
wherein the means which yieldingly resists opening of
the [door comprises a helical tension spring connected
Rees ________________ __ Mar. 9,
at one end to a ?xed anchorage at the rear of the oven;
Brown et a1. __________ __ May 6, 1958
References Cited in the ?le of this patent
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