вход по аккаунту


Патент USA US2129923

код для вставки
Sept. 13, 1938.
Filed Nov. 18, 1936
. a?“
2 Sheets-Sheet l
Sew. 13, 3938,
Filed Nov. 1.8, 1936
2 Sheets-Sheet 2
L 1%] lI
M z. (101w
Patented Sept. 13, 1938
Mortimer Frankel, Indianapolis, Ind.,- assignor to
Fairbanks, Morse & 00., Chicago, 111., a corpo
‘ ration of Illinois
Application November 18, 1936, Serial No. 111,432
1 Claim.
This invention relates to improvements in re
as viewed in the direction of the arrow appearing
in Fig. 4.
invention is to provide a refrigerator having an
Referring to the drawings by characters of ref‘
auxiliary food compartment or chamber formed _ erence, the refrigerator cabinet, designated gen
frigerator cabinets and the primary object of the
5 between a pair of doors, one of which constitutes
the principal closure for the cabinet. With the
described construction the inner door provides a
closure for the inner, or main food chamber and
serves to check the entrance of heat into the main
w chamber when the outer door is opened. The
more frequently used articles may be stored in the
closed positions by latching mechanisms, that. ill)
mechanism for the inner door being mounted on
the jamb H5. The outer do'or it may comprise,
in accordance with vconventional refrigerator door
main chamber.
for the plural door structure above mentioned,
whereby both doors maybe opened concurrently
to render the inner chamber accessible, by a slim
ple, single hand unlatching operation, and where
by an equally simple manipulation of the latch
enables the outer door to be opened without dis
A further advantage of the improved door op
erating and latching arrangement is attained in
the facile manner in which the inner door may be
opened after the user has opened the outer door,
as for example, where it is desired to remove arti
39 cles from the forwardauxiliary compartment and
transfer the same to the main chamber.
Other objects and advantages will appear from '
the following; description which refers to a pres
ently preferred embodiment of the invention il
lustrated by the accompanying drawings.
Fig. i of the drawings is a perspective view of
a refrigerator with both doors shown in open
adapted to lap the margins of the door opening.
A sealing strip ll of suitable material skirts the
inner peripheral edge of the face plate. The
outer door is supported on hinges indicated at l8
and may be secured in closed position by a suit- 20
able latch mechanism actuable by handle 99 car
ried by the door.
Describing now the construction and arrange
comprises a sheet metal panel having forwardly 25
projecting marginal ?anges in the manner of a
shallow rectangular pan. Food shelves 2e are
suitably mounted on the front face of the door,
as best appears in Fig. 2. -When both doors are‘
disposed in closed position (Fig. 2) inner door 30
i2 lies wholly within the refrigerator cabinet and
the forward extremities thereof are spaced 2. short
distance from the inner face of door l3. The
inner door is dimensioned smaller than the cabi
net opening to provide a marginal space between 35
‘he same and the inner wall faces of the cabinet.
Accordingly, cold air may circulate freely between
the main and auxiliary compartments, through
Fig. 2 is an enlarged sectional plan view of the
40 front portion of the refrigerator, with the doors
disposed in closed position, and showing the latch
device for the inner door;
Fig. 3 is an enlarged, fragmentary sectional
elevation of a portion of the refrigerator, showing
45 means of a preferred type for automatically open
ing the inner door, the view being taken along
line 3-3 in Fig. 2;
Fig. 4 is a detail view in plan of preferred en
50 larged sectional latch construction for the inner
construction, an insulating panel l5 adapted to_
fit within the'door opening and a face plate i5 15
,ment of the inner door l2, such door preferably
turbing the inner door.
door 12 are hingedly supported from the jamb
l3 and adapted to be latched in their respective
on the front face of the inner door which is
adapted to be swung open togive access to the
Another object of ‘the invention is to provide an
a lower space occupied by a mechanical cooling
unit (not shown). An outer door 6 l and an inner
auxiliary compartment on trays or racks mounted
improved operating and latching arrangement
erally Ill, has an upper space for food storage and 5
Fig. 5 is a sectional elevation of the inner door
latch mechanism as taken along line 5-5 in
Fig. 4, and
Fig. 6 is a side elevation of the latch mechanism
the space surrounding the inner door. Certain of
the shelves 211 are provided at their forward edges 40
with rubber buffers 2! for silent, shock-absorbing
engagement with the outer door.
The inner door is carried by a pair of hinges 22,
and one or both of which hinges include means,
to be hereinafter described, for causing’ the door 45
to be moved automatically into open position
when its latch is released and the outer door is ,
open. Each hinge includes relatively long and
short arms 23 and 24, respectively, pivotally inter
connected ln the conventional manner by a hinge 50
pin 25. The jamb i3 at the hinged side of the
outer door is suitably recessed to accommodate
hinges 22, the pivotal axes 'of which are located
near the forward edge of said jamb. Hinge arm
24 is fastened by screws 26 to a plate 2‘! and such 55
plate is secured to the jamb within one of the
from the side wall of the cabinet for latching and
recesses, aforesaid, by screws 21A. Screws 28
serve to secure the door II to the longer hinge
unlatching engagement with the inner door.
arm 23.
The self-opening means for the inner door.
heretofore referred to, may desirably include a
spring 29 (Fig. 3), which acts upon a plunger 39.
The spring and plunger are mounted in a tubular
housing 3|, the assembly occupying a bore or
pocket in the door jamb. The plunger 30 pro
jects through registering openings in hinge arm
24 and plate 21 for'bearing engagement with
hinge arm 23.
Suitable means are provided for
limiting the‘extent of plunger movement out
wardly of the housing, as for example, the en
larged head 32 at the extremity of the reduced
plunger neck portion 33, which head abuts the
inner end of the tubular housing 3| when the de
sired extent of plunger travel, outwardly, is
The manner in which the spring and
Arm 5| terminates in a U-band 54 which normal
ly is disposed in the path of a flange 55, formed
on the inner door, serving to limit the extent of
inward door movement, relative to the cabinet.
The door ?ange 55 is desirably provided with a
suitable rubber strike pad 56 which is held to .
the flange by the angulate end portion 51 of a
striker plate 58, extending across the end face of 10
the door. Lever arm 5| may strike the side wall
of the cabinet when retracted to ‘release the door
and for purposes of cushioning the impact a rub- .
ber pad 59 is provided on the lever arm.
Associated with lever arm 5| is the catch mem
ber 49 which is pivotally mounted on pin 4| for
independent movement relative to the associated
lever arm. Catch member 49 is provided with an
angulate nose portion ‘69 which projects through a
slotted opening 6| in lever arm 5| for engagement 20
with a forward corner 62 of strike 58. Movement
plunger assembly functions to open the inner
door when the latch is released, and the way in of the catch member outwardly with respect. to
which the plunger is reset by the door when closed _the lever arm is limited by the engagement of an
end projection 63 on the catch member with the
will be apparent from Figs. 2 and 3.
The latching mechanism for the inner door is. ‘back side of the lever arm. The nose portion 25
of the catch member is normally held in project
mounted on jamb H, the mechanism being actu
able to release the inner door by means of a ing position relative to the lever arm by means
plunger, or push rod 34, which projects through of a torsion spring 64, one end 65 of which is
the front face of the jamb and is located in suitably anchored to the short arm 5|! of lever
proximity to the outer door handle i9 when that 39, and the other end 66 of which spring bears 30
door'is closed. The door jamb I4 is provided with upon the side of the catch member. Spring 64,
a recess 35 extending inwardly from the side face by preference, is weaker than spring 69 which
thereof,_ which recess is occupied by the latch serves yieldingly to position the secondary lever
mechanism, and a recess or opening 36 for push
rod 34 extending from recess 35 to the front face
of the jamb. Mounted within a suitable case,
designated 31, in the jamb recess 35, is a com-
pound lever system comprising a so-called pri-_
mary lever 38, and a secondary or latch lever made
up of two members 39 and 40 which‘are mounted
for rocking movement on a common, vertical pivot
pin 4|. The substantially straight primary lever
38, mounted on a vertical pivot pin 42, is provided
with bearing plates 43 and 44 at its opposite ends.
Bearing plate 43' engages the inner end of push
rod 34, and bearing plate 44 operatively engages
the shorter arm‘ of secondary lever member 39.
A torsion spring 45 carried by pivot pin 42 has a
yieldable ?nger 46 which presses against bearing
plate 43 to maintain the same in operating con- ~
tact with, and-providing a spring return for the.
push rod. Suitable means are provided for limit
ing the extent of push-rod travel outwardly of
the jamb, in the pesent example, such means in
cluding a plate 41 having an end slot 48 which
accommodates a reduced portion of the push rod,
the inner head end 49 of the push rod abutting
the margins of the plate slot when the desired
outward extent of push rod travel has been
The secondary lever member 39 is of the
bell-crank variety, having a short arm 56 which,
as has been stated, is operatively engaged by pri
mary lever 38, and a long arm 5| disposed sub
stantially at a right angle to arm 59. Lever mem
ber 39 is fulcrumed on pivot pin 4| by means of
spaced lugs 52 located at the angulate bend of
the lever. A torsion spring 69 disposed on the
pivot pin has a yieldable ?nger 53 which presses
against the short lever arm, constraining the lever
toward door latching position and holding the
same in operating engagement with the primary
lever, as best appears in Fig. 4. The longer lever
The members 39 and 40, comprising the sec 35
ondary lever assembly, extend through an open
ing in a ?nishing or closure plate 61 fastened to
door jamb l4 by screws 68 which also serve to
secure the entire latching assembly to the cabinet.
Describing now the operation of the inner door 40
latch mechanism, assume that the outer door is in
open position and it is desired to open the
inner door. Push rod 34-is pressed inwardly to
cause primary lever 38 to rock clockwise (Fig. 4)
against the action of spring 45 and move the 45
secondary lever assembly in a counterclockwise
direction against'the action of spring 69. The
nose 60 of the catch member is thusretracted to
free the inner door ?ange 55, allowing the door,
motivated by spring 29 (Fig. 3) to swing open.
When the plunger rod 34 is released, the described
latch mechanism is restored by the springs to its -
normal condition which is shown by Fig. 4.
When the inner door is closed, the catch mem
ber and lever arm are sequentiallycammed in 55
wardly by the striker plate, inward movement of _
the door being ultimately checked by the bent end
portion of the lever arm. The catch member
springs back into latching‘engagement with the
door ?ange and holds the door closed against the 60
opening force produced by spring 29.
In accordance with the speci?ed objects of the
invention it will appear that both doors may be
opened concurrently and with but little manipu
lative effort by the simple operation of pressing
the push rod 34 with the thumb of the same hand
that is used to grasp handle I 9 to open the outer
door. The operating spring associated with the
inner door causes the same to swing open smooth 70
ly and quietly, and without unduly disturbing
articles carried thereby. The desirability of pro
viding self-opening means for the inner door, and
arm 39 emerges from the jamb recess 35 toward
avoiding the use of means operatively connect
the rear of the cabinet and swings toward and
ing the inner and outer doors for their joint 75
2,129,023 _
opening by a pull or jerk on the outer door handle
will be readily understood.
I claim:
In combination with a refrigeratori cabinet
having a forward opening and a food chamber
accessible therethrough, an outer door hingedv
on the cabinet and providing a closure for said
opening,‘ an inner door hinged on the cabinet,
adapted to divide the food chamber into forward
and rear compartments, a cooling unit located
in the rear compartment, shelves on said inner
door for supporting food in the forward com
partment, a latch element mounted on the cabinet
and cooperating with said inner door, a plunger
for actuating said latch projecting from a_ for
ward wall of the cabinet adjacent the door- open
ing, spring means operable to move the inner
door outwardly of the cabinet when said latch
is released, a latch for the outer door, a- handle
mounted on the outer door, operatively connected
to the outer door latch for releasing the same,
said handle and plunger being arranged for con
current, single-hand manipulation when the outer 10
door is closed.
Без категории
Размер файла
489 Кб
Пожаловаться на содержимое документа