Патент USA US2129923код для вставки
Sept. 13, 1938. M FRANKEL 2,129,923 REFRIGERATOR CAB INET Filed Nov. 18, 1936 . a?“ 2 Sheets-Sheet l L ‘3. ATTORNEY. Sew. 13, 3938, I 2,129,923 M. FRANKEL REFRIGERATOR CABINET Filed Nov. 1.8, 1936 2 Sheets-Sheet 2 7 s L 1%] lI BY M z. (101w ATTORNEY. 2,129,923 Patented Sept. 13, 1938 STATES PATENT OFFICE 2,129,923 , REFRIGERATOR CABINET 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 11$ 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 position; 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 door; 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. 3 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 25 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 2 erally Ill, has an upper space for food storage and 5 I 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 .2. 2,139,923 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 reached. 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 15 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 reached. ' 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 assembly. ‘ 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. ‘ v MORTIMER FRANKEL.