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Publication numberUS2495327 A
Publication typeGrant
Publication dateJan 24, 1950
Filing dateJan 10, 1947
Priority dateJan 10, 1947
Publication numberUS 2495327 A, US 2495327A, US-A-2495327, US2495327 A, US2495327A
InventorsHubert Hardin
Original AssigneeEd Friedrich Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Open type display refrigerator
US 2495327 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jan. 24, 1950 H. HARDIN OPEN TYPE DISPLAY REFRIGERATOR 3 Sheets-Sheet 1 Filed Jan. l0, 1947 IN1/EN TOR,

H5872 Hardw,


Jan. 24, 1950 H. HARDIN OPEN TYPE DISPLAY REFRIGERATOR 3 Sheets-Sheet 2 f Filed Jan. 10, 1947 INVENTOR,


Jan. 24, 1950 H. HARDIN oPEN TYPE DISPLAY REFRIGERAToR 3 Sheets-Sheet 3 111121.41-

Filed Jan. 10, 1947 INVENTOR, Hube Harel a ATTOHN EY.

Patented Jan. 24, 1950 v 2,495,327 o PEN mi: DISPLAY amrciim'roa Hubert Hardin, San Antonio, Tex., assignor to Ed Friedrich, Inc., San Antonio, Tex., a corporation of Texas Application 'January io, 1941, serial No. 721.402 1 claim. (Cl. ca -sas) vMy invention relates to display refrigerators which are particularly useful for keeping articles of merchandise in a refrigerated conditionand at the same time permit ready and free access to such merchandise by the customer.

Objects of the invention are, (1) to provide a refrigerator in which packaged frozen foods may be stored in full view of the customer through a transparent front wall, the packaged goods being well located below the top of the front wall in what may be termed a dead air chamber, (2) to provide a novel refrigerating coil unit which also serves as a partitioned receptacle for the packaged goods, (3) to provide means for effecting a layer of more or less quiescent cool air above the contents of the s'aid receptacle, (4) and in general to provide an improved refrigerator of the type stated which will be neat and artistic in appearance as well as eillciently useful in the performance of its function. f

Other objects will in part be obvious and in part become apparent hereinafter.

To the attainment of the aforesaid objects and ends invention further resides in the novel details of construction, combinations and arrangement of parts all of which will iirst be fully described and then be specifically pointed out in the appended claims, reference being had to the accompanying drawings in which:

Fig. 1 is an enlarged cross section on mately the line I-I of Fig. 2.

Fig. 2 is a schematic perspective view of my refrigerator.

Fig. 3 is an enlarged detail sectional view of one corner of the combined food receptacle and cooling unit on about the line 3-3 oi Fig. 2;

Fig. 4 is a view similar to Fig. 3 on the line 4-4 of Fig. 2.

Fig. 5 is a `detail perspective section of the parts shown in Fig. 3.

Inthe drawing in which like numerals and letters of reference indicate like parts in all the figures, I represents 4the base of the refrigerator case, 2 the sub-floor on which is laid a layer or layers of insulation 3. The framing of the approxicase is indicated by II, Il, IIb, llc, lid, II,

Hf, IIS, llh, II, Ill, lik, ill, Ilm, Il, II, II,

IIq, II', IIS.

The front wall comprises the insulation l, the metal facing 1, window frame and sheathing 5, and the window panes 6.

' seam welded together also.

The back wall of th'e cabinet includes the iny sulation 8 and metal facing 9. The side or end walls I0 are likewise formed o f metal sheathing over insulation and present a similar cross-section to the back wall.

Above the level of the top of the front wall of the case and extending horizontally forwardly therefrom between framing boards Il. IIb is a block of insulation 38 while a vertical wall of insulation 39 extends from the front of the block and board II downwardly a substantial distance below the top of the window frame 5, thus providing an air space P open only at the bottom. A front board I2 secured between two framing boards Il", IIJ and faced with a metallic plate I3 forms the front of the vertical wall. The bottom of the vertical wall and the inside of the space P are provided with a metal sheathing Il that extends down over the framing board Il that is located in the back wall below the level of the vertical wall as best shown in Fig. 1.`

Brackets I5 secured to the vertical wall and the back wall in any approved way constitute supports for auxiliary cooling plate-coils It located in parallel vertical positions within the chamber.

Within the food chamber F is located a combinedcooling or freezing plate coil and food containery unit which comprises an'essential part of the present invention. This unit is best shown schematically in Fig. 2 and in end elevation and part cross section in Fig. 1. As will be seen this unit comprises a metal base plate or oor plate Il, a back wall plate I8, a front wall plate 28 and endplates I9, the latter being the outer plates of the end plate-coils whose inner plates are indicated by 20. The plates I8, 28 and 20 have bent over bottom portions 23 which are seam welded, as at sw, to the bottom plate I'I. The vertical corner edges of the plates I8, 28 and 20 are bent so as to lie together as at 25 and Intermediate partition plate coils 2l are provided and have front and back anges 22 spot welded, as at 20 Fig. 4, to'the plates I8, 28.'- The partition plate-coils 2l do not extend down to contact the -plate I1 but are spaced a suitable distance from the same to allow drainage to the drain 40, when stopper Il is removed.

The flanges 23.are bevel cut at the corners and corner pieces 24, slotted to fit over the parts 25, are inserted and gas-welded to the flanges 23, as at gw, and seam welded to the plate Il as at sw, Fig. 5.

The several plate coils I9, 2l, 2l and I6v are connected together, preferably in series, and to an outside source of refrigerant circulator, by

pipes 26 as best shown in Fig. 2.

'I'he combined cooling or freezing and food holder unit includes outside insulation blocks 21 which rest on the flanges 23. This self-contained unit is set into the food chamber F of the cabinet and rests on the floor insulation 3.

It is to be noted that the front wall 28 of the u'nit does not extend above the level of the bottom of the window but is bent over the insulation block as at 29 on'3l, the edge 30 being protected bythe strip 3| of the window structure.

Spaced above the horizontal wall formed by the insulation 38 and adjacent framing boards H is a top composed of framing boards ll and a metal cover plate 32. The top overhangs the horizontal wall as a canopy and contains along its front a box'33 for a tubular light tube 34.

A mirror 35 is mounted beneath the canopy to reilect the contents of the food chamber F to the outside.

Celotex or other suitable boards 36 behind the mirror 35 cooperate with the top and the horizontal wall to provide a chamber S which is open at the back, as at 31, and may. be used to hold or store any articles desired.

.The articles of food to be preserved (such as packaged frozen food) are piled in the spaces between the plate-coil-partitions 20, 2| to the level of the top of the said partitions. This makes them visible through the window as well as reiiection from the mirror.

Clip-strips or similar strips 42 serve to support signs 43 illustrative of the products serviced, the signs being supported against the sheathing I3, when they are in place. v

It is to be observed that no means is provided to eifect any denite circulation of air in the cabinet, it being desired to maintain as quiescent a volume of cold air in the chamber F as possible. Any Warm air which may enter chamber F while removing a package of frozen food is .said canopy top and above the level of the top of the window, said insulating partition extendingv forwardly from said back wall a substantially lesser distance than the canopy top, an insulation wall extending vertically downward from the front end of said horizontally disposed insulation partition toa level below that of thex'top of the front wall window to provide a space between the back wall and said vertically downwardly extending insulation wall, said space being open only at the bottom, a metallic lining for said space; a combined cooling and food receptacle unit within said case Abelow said' space and including horizontally spaced vertical cooling plate promptly displaced by cold air from space P, the

In an open-type` display refrigerator; a case coils the tops of which extend above the bottom level of the window and terminate a substantial distance vbelow said space; and an auxiliary coolingplate unit located in said space and opera' REFERENCES CITED The following references are of recordtin the file of this patent:

UNITED STATES PATENTS Number Name Date 2,207,586 Hill July 9, 1940 2,248,286 Sanders July 8, 1941 2,321,695 Miller June 15, 1943 2,379,885 Davis July 10, 1945 2,428,243 Raskin sept, 3o, 1947 2,430,329 Davis Nov. 4, 1947 2.447.699

Hardin' Aug. 24. 1948

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2207586 *Jun 14, 1939Jul 9, 1940C U Hill & Company IncRefrigerated vegetable stand
US2248286 *Aug 30, 1939Jul 8, 1941Sanders Ernest ERefrigerated display case
US2321695 *Nov 6, 1940Jun 15, 1943Lotus F MillerRefrigerating apparatus
US2379885 *Dec 3, 1943Jul 10, 1945Hussmann Ligonier CompanyRefrigerated display case
US2428243 *Sep 22, 1944Sep 30, 1947Walter RaskinRefrigerator display and storage fixture
US2430329 *Jul 30, 1945Nov 4, 1947Hussman Ligonier CompanyDisplay refrigerator including controls for the operation thereof
US2447699 *Mar 17, 1947Aug 24, 1948Ed Friedrich IncOpen-top refrigerated display case
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2878653 *Aug 22, 1956Mar 24, 1959Gen Motors CorpRefrigerated display case
US4150550 *Nov 3, 1977Apr 24, 1979George W. LeechSelf defrosting refrigerated display case
US4274267 *Aug 30, 1979Jun 23, 1981Tannetics, Inc.Horizontal merchandising cooler
US6438983 *Dec 20, 2000Aug 27, 2002Tyler Refrigeration CorporationDipping cabinet with improved lighting
US6883343Jun 18, 2003Apr 26, 2005Delaware Capital Formation, Inc.Service case
US6889514Jun 18, 2003May 10, 2005Delaware Capital Formation, Inc.Service case
US6981385Aug 17, 2002Jan 3, 2006Delaware Capital Formation, Inc.Refrigeration system
US7159413Oct 21, 2003Jan 9, 2007Delaware Capital Formation, Inc.Modular refrigeration system
US20030140638 *Aug 17, 2002Jul 31, 2003Delaware Capital Formation, Inc.Refrigeration system
US20030205053 *Jun 18, 2003Nov 6, 2003Mark LaneService case
US20030213260 *Jun 18, 2003Nov 20, 2003Mark LaneService case
US20050081551 *Oct 21, 2003Apr 21, 2005Delaware Capital Formation, Inc.Modular refrigeration system
U.S. Classification62/246, 62/458, 62/264, 62/253
International ClassificationA47F3/04
Cooperative ClassificationA47F3/0465
European ClassificationA47F3/04B2