U.S. patent number 3,838,538 [Application Number 05/374,754] was granted by the patent office on 1974-10-01 for oven door mounting.
This patent grant is currently assigned to Simpson Pope Limited. Invention is credited to Bruce Alfred Burford.
United States Patent |
3,838,538 |
Burford |
October 1, 1974 |
OVEN DOOR MOUNTING
Abstract
A mounting for the door of a cooking oven, being of the kind
hinged along its lower edge and preferably internally provided with
counter-weighting springs, in which the door is hinged on a
carriage so that when the door is fully opened and hence
substantially horizontal it may be slid into a space under the oven
cooking chamber floor so as to provide easy access to the interior
of that chamber.
Inventors: |
Burford; Bruce Alfred (Fulham,
AU) |
Assignee: |
Simpson Pope Limited (Dudley
Park South, AU)
|
Family
ID: |
3765159 |
Appl.
No.: |
05/374,754 |
Filed: |
June 28, 1973 |
Foreign Application Priority Data
Current U.S.
Class: |
49/258; 126/191;
126/194; 312/323 |
Current CPC
Class: |
F24C
15/023 (20130101); E05Y 2201/416 (20130101); E05Y
2900/308 (20130101) |
Current International
Class: |
F24C
15/02 (20060101); E05d 015/58 () |
Field of
Search: |
;49/254,257-260
;312/322,323 ;126/191,194 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Downey; Kenneth
Attorney, Agent or Firm: Hauke, Gifford, Patalidis &
Dumont
Claims
I claim:
1. Oven door mounting means comprising:
a structure under the oven compartment floor providing a frontally
open space able freely to receive the oven door horizontally within
it when that door is presented and advanced edgewise relative
thereto;
substantially horizontal runway elements fixed to the sides of said
structure and extending away from the front of the oven towards the
back thereof;
carriage members freely movable along said runway elements;
hinge lugs mounted on the front of said carriage member to which
the oven door is pivoted by a lower portion thereof;
a pair of socket members fixed on said carriage and each
incorporating an upright frontal flange having an open-top slot in
it, and an oblique keeper flange;
shank portions on said hinge lugs respectively able to extend
through said slots to engage under said keeper flanges;
and means detachably connecting said shank portions to said keeper
flanges whereby the door can be bodily removed from said
carriages.
2. Hinge-down oven door mounting means according to claim 1 wherein
said runway elements are down-tilted towards the back ends thereof
thereby gravitationally to influence said carriage to move towards
said back ends.
3. Hinge-down oven door mounting means according to claim 1 wherein
said carriage includes a pair of leaf springs respectively able to
ride over obstructive humps on said runways.
4. Hinge-down oven door mounting means according to claim 1
including a step in each of said shank portions able to engage
under the lowermost edge of the keeper flange associated therewith.
Description
BACKGROUND OF THE INVENTION
This invention relates to "hinge-down" oven doors; that is, those
that are horizontally hinged along or near their bottom edges at or
near the floor level of the oven doorway which gives access to the
oven cooking compartment.
Such doors are relatively heavy, and many expedients have been
proposed to facilitate their use. It has long been customary to
provide oven doors with loading springs which counter-balance, or
substantially counterbalance, their weight; and, when closed,
influence them to remain closed. More recently it has been proposed
to render such doors bodily removable from the oven doorway.
These prior expedients are considerably advantageous;
counterbalancing being obviously so. Total or bodily removability
is also important in facilitating access to the oven interior when
it is to be cleaned; but removability of the oven door has not
proven to be practical in providing easy access to the oven
interior during ordinary cooking use, because it involves lifting
the door putting it aside (while attention is given to the cooking
operation) and then putting it back on the oven front.
Thus, even where total removability is provided, an access problem
remains due to the horizontal projection of the oven door into the
kitchen space; and this is particularly inconvenient in the case of
"elevated" ovens in which the cooking compartment floor level is
about waist-high. In that case it means that the cook has to lean
across the open door to gain access to the oven interior, or work
at arms' length in performing basting or like operations, or in
placing matters in, or removing them from, the oven
compartment.
SUMMARY OF THE INVENTION
The object of this invention is to overcome the indicated
disability in a very simple way, by the provision of hinge-down
oven door mounting means preferably incorporating conventional
spring counterbalancing means and, if desired, providing for total
removability of the door while permitting the open door to be
easily stowed under the oven cooking compartment, to give
unobstructed access to that compartment without bodily
disconnection of the door from the oven structure.
The invention provides:
Hinge-down oven door mounting means comprising:
A. A STRUCTURE UNDER THE OVEN COMPARTMENT FLOOR PROVIDING A
FRONTALLY OPEN SPACE ABLE FREELY TO RECEIVE THE OVEN DOOR
HORIZONTALLY WITHIN IT WHEN THAT DOOR IS PRESENTED AND ADVANCED
EDGEWISE RELATIVE THERETO;
B. SUBSTANTIALLY HORIZONTAL RUNWAY ELEMENTS FIXED TO THE SIDES OF
SAID STRUCTURE AND EXTENDING AWAY FROM THE FRONT OF THE OVEN
TOWARDS THE BACK THEREOF;
C. A CARRIAGE MEMBER FREELY MOVABLE ALONG SAID RUNWAY ELEMENTS;
AND
D. HINGE LUGS MOUNTED ON THE FRONT OF SAID CARRIAGE MEMBER TO WHICH
THE OVEN DOOR IS PIVOTED BY A LOWER PORTION THEREOF.
The mentioned structure under the oven compartment floor may
consist in no more than the ordinary frame or support members which
constitute a substantially conventional part of the oven structure
as a whole, and if desired, where the oven is of the kind standing
on legs, the oven door, when retracted or stowed away, simply
passes between the legs to the open space under the oven floor. In
the preferred embodiment, preference however, the front wall or
facing panel of the oven has an opening in it just below the oven
compartment doorway. The dimensions of this opening are such that
when the rear edge of the open and substantially horizontal door is
presented to it and advanced through it, the opening is large
enough to admit the door freely but preferably only just large
enough as is compatible with providing mechanical clearance for the
advancing door.
DESCRIPTION OF THE DRAWINGS
An example of the invention is illustrated in the drawings
herewith.
FIG. 1 is a plan of an oven door, in its closed position, a
carriage on which it is pivoted and runway elements for the
carriage.
FIG. 2 is a side elevation taken in the direction of line 2--2 in
FIG. 1 showing, in full lines, the door in closed position and, in
dotted lines, the door partly opened.
FIG. 3 illustrates, on a larger scale, that part of FIG. 2 within
circle 3.
FIG. 4 is a plan taken on line 4--4 in FIG. 3
FIG. 5 is a partly sectioned side elevation taken on line 5--5 in
FIG. 4.
FIG. 6 illustrates a portion of the structure shown in FIG. 5, but
on a larger scale and in somewhat more detail.
FIGS. 7 and 8 are sectional details respectively taken on lines
7--7 and 8--8 in FIG. 6.
FIG. 9 is a sectional detail taken on line 9--9 in FIG. 4.
DESCRIPTION OF A PREFERRED EMBODIMENT
Referring to the drawings the two runway elements are preferably C
sectioned channels 10 secured, by their webs, to the under-floor
structure by riveting, bolting, spot-welding or otherwise, with the
flanges of each directed towards those of the other. These runway
channels are preferably horizontal with front ends respectively
aligned with the ends of the mentioned opening in the front wall or
facing panel of the oven. Although the runway channels are
preferably horizontal they may be slightly angled downhill from
their front ends to provide a gravity loading which urges the
mentioned carriage to resume or remain in its retracted
position.
The carriage consists of a plate-like frame or body 11 having
flanges 12 at its ends. These flanges carry stub axles 13 for
rollers 14 able to run freely in the runways 10. The carriage has
two hinge lugs 15 mounted on it to project forwardly through the
mentioned opening of the oven front (not shown). These lugs project
through slots in the back face or panel 16 of the oven door 17, and
inside the door structure the door is pivoted to the lugs 15 by
rivet-like hinge pins 18 or the like. This pivot mounting of the
door is preferably by way of conventional hinge strips 19 which
form part of or are fixed relative to the door frame structure.
Such hinge strips extend for almost the full length of the door
sides and at their radially outermost ends they have holes to
receive (respectively) the hooked outer ends 20 of a pair of door
counterbalance tension springs 21. The inner ends of the springs
are similarly anchored at 22, to the carriage hinge lugs 15. The
counter-balance spring arrangement is a conventional one in that
the springs are strong enough (when the door is in closed position
as shown) to hold the door closed, but not strong enough (when the
door is fully opened as indicated by broken lines 23 in FIG. 6) to
lift or turn it from fully open position.
The door hinge strips have in-bent inner end portions 24 able to
enter bottom-opening slots 25 in the hinge lugs 15 to provide an
obstructive limit for the full open position of the door so to
ensure that when the door is to be retracted under the cooking
chamber it will be properly positioned to pass through the oven
front opening without interference.
The door is used in the ordinary way for normal opening and closing
movements thereof. When it is to be retracted it is fully opened
and then simply pushed through the oven front opening as far as may
be necessary to provide convenient access to the oven interior.
The runways for the carriage are furnished with stop lugs 26 (FIG.
1) and 27 (FIG. 3) to limit the extent to which the carriage is
movable along the runways.
The carriage is preferably also provided with restraining leaf
springs 28, fixed to the carriage by brackets 29, able to ride
resiliently over humps 30 fixed on the runways. Springs 28 and
humps 30 are provided to restrain the carriage from over-free or
unintentional retraction movement when for example, the fully open
door is required for use as a shelf upon which a cooking dish or
the like may be rested.
A further restraint against over-free movement of the door may be
provided; in this instance, against slamming of the door into its
upright closed position against the oven chamber front face. This
further restraint consists in lugs 31, on the hinge strips 19,
which, as the door closely approaches closed position, ride
frictionally on to the upper ends 32 of strut-lugs 33 pivoted, at
34, on the hinge lugs 15. The extent to which the strut-lugs are
free to move pivotally relative to the hinge-lugs 15 is very
limited, because the upper ends 32 extend over the hinge-lugs 15
(see FIG. 8) but it is sufficient, when the door is almost closed,
for the lugs 33 to strut firmly against lugs 31 and so prevent or
reduce closure of the door in a slamming manner.
In the illustrated embodiment of the invention, the oven door is
bodily removable from the carriage and hence from the oven
structure as a whole. This is carried out by making the hinge lugs
15 separable from the carriage instead of being fixedly secured
thereto as may be the case if desired. To this end the carriage has
front socket members 35 fixed to it, able to receive and hold the
hinge lugs 15 (pivoted to hinge strips in the oven door as
previously described).
Each of the socket members consists of a back-plate 36, by which
the member is fixed to the carriage, an upright front flange 37 and
an oblique keeper flange 38. Flange 37 has an open-top slot 39 in
it, through which a shank portion 40 of hinge bracket 15 freely
extends to abut against the underside of flange 38. The free end of
shank portion 40 has a small step 41 able to "click" under the
lowermost end of flange 38 as best shown in FIG. 5. Hinge bracket
15 has a tail-piece 42 which abuts against the front face of flange
37. The keeper flanges 38 and the front flanges 37, thus constitute
sockets into which the hinge lug shank portions 40 may be readily
descended and then become fixedly restrained against disconnection
except by an obliquely directed raising movement due to intentional
upward lifting of the door assembly, in its entirety, from its
closed or nearly closed position.
* * * * *