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May 3, 1938. R. E. HOLMES ‘2,115,720 AIR CONDITIONING APPARATUS Filed Aug. 24, 1935 2 Sheets-Sheet l ‘Fla. 2. INVENTOR RlcHaRu E. HoLML-a. (2a May 3, 1938. R. E. HOLMES. I ‘ ' ‘ 2,115,720 AIR CONDITIONING APPARATUS Fil'ed Aug. ‘24,1935 2 Sheets-Sheet 2 iI I Iv r1 1 46 I1 I r; r In I éa 47 , 6 1‘ ,_. “ Amv-w 2 , MW ATT NEY ' Patented’ May 3, 1938 2,115,720 UNITED STATES PATENT OFFICE 2,115,720 AIR oonm'rromo. APPARATUS Richard E. Holmes, Spring?eld, Mass.,assignor to Westinghouse Electric & Manufacturing Com pany, East Pittsburgh, Pa., a corporation of Pennsylvania Application August 24, 1935, Serial No. 37,667 8 Claims. (Cl. 312-143) My invention relates to air conditioning appa it is open at the back. Adjacent'walls are se ratus, more particularly to a cabinet or casing for cured to each other in any suitable manner, as a unit air cooler of the suspended type, and it has by bolting a ?ange on one wall to the adjacent for an object to provide improved apparatus. wall.~ In the illustrated embodiment, outwardly (a Another object is to provide a simple and inex extending ?anges I5‘ are formed along the rear h pensive cabinet construction. half of the top and bottom edges of the side walls A further object is to provide a cabinet that , I 2 and are secured to the top and bottom ‘walls may be readily assembled on the unit air cooler H and i3 by bolts l1. Similarly, the front edges after the remainder of the unit is installed, there- - of the top and side walls, It and i2, are formed by minimizing danger of defacing the cabinet. with outwardly extending ?anges it which are 10 Still another object of my invention is to pro secured to the front wall ll. , ‘ vide a cabinet comprising wall members secured Cooling coils l9 are mountedin the inner cas in position with minimum externally visible se ing J0, the several tubes extending through the . curing means. side walls l2. - The front wall it is formed with In accordance with my invention‘, 1- provide a a circular opening 2i, and a fan 22, driven by a 15 supporting structure for the air treating element motor 23, is disposed substantially in the opening adapted to be installed with most of the cabinet ‘ 2| for circulating air forwardly therethrough. removed. The cabinet comprises a bottom wall Four bolts 24 are secured‘ to the top wall II by member having upwardly and inwardly extending means of nuts 25 and extend upwardly for‘at ,0 ?anges, a top wall member having downwardly tachment to a ceiling or other structure from 20 and inwardly extending ?anges, and a third wall member forming the front and side walls and adapted to have its upper and lower edges inter locked with the inwardly extending ?ange por 25 tions of the top and bottom members in such a way that the interlocking parts are not exter nally visible. The upper and lower edges of the) vertical wall member are preferably provided with vertical projections adapted to be received in openings in said inwardly extending ?ange ‘ which thenunit is suspended and supported. The bottom wall i3 is extended beyond the front and sidewalls and formed with an upwardly extend ing ?ange 26 at each edge, thereby forming a drip pan to collect moisture condensed from the air. The unit air cooler is enclosed by an outer cas ing or cabinet 21 comprising a bottom wall 28, a top wall 29 vand a vertical wall member 3| pro viding outer side walls 32 and a front wall 33, all disposed in spaced relation to the respective walls portions. The bottom wall member may be sup- ' of the inner casing. These walls may be made of ported on the supporting structure, as by provid ing the latter with ?anges engaging in the chan nels formed by the ?anges on the bottom wall member, and the other wall members may rest in superimposed relation on the bottom wall mem ber. These and other objects are effected by my in vention as will be apparent from the following description and claims taken in connection with the accompanying drawings, forming a part of this application, in which: Fig. l is an exploded perspective view of the cabinet; ' . _ ' Fig. 2 is an end view, in section, of the complete “ unit air cooler; ' Fig.3 is a detail view, in vertical section, show ing the interlocking relation between top wall and the vertical wall member; and, , V ' Fig. 4 is a front sectional view. Referring to the drawings in detail, I show a unit air cooler having a supporting structure, which is preferably in the form of an inner casing Ill. The inner casing includes a top wall ll, side walls l2, a bottom wall l3 and a front wall It, and thinner metal than the inner casing and provided with an exterior decorative ?nish. A rear wall 34, ' which may be considered as part of the outer cas ing, closes the back of the unit. The rear wall/34 is bolted at the top to a ?ange 35 formed at the rear edge of the inner top wall H, and it is se cured by screws 36 to a wooden block 31 disposed adjacent the rear edge of the bottom wall i3. The rear edges of the side walls l2 and the 40 bottom wall l3 of the inner casing are spaced from the rear wall 34 providing passages“ for ?ow of air. The inner top wall II is formed with _ an opening 39, disposed between the bolts 24, for ?ow of air. The top, side and bottom Walls of the outer casing are formed with louvers 4| ad jacent the rear wall 34, providing openings through which air- enters and ?ows to the pas sages 38 and through the opening 39. The outer bottom wall 28 is-formed at its front and side edges with upwardly and inwardly ex tending-?anges 42 providing a channel form, the inwardly extending portions being indicated at 43. Wood blocks 44, extending along the sides‘of the unit, are secured to the inner bottom wall i3 55 2 2415,1720 and are formed with ?anges 45 projecting hori zontally into the channel interior of the ?anges 42, thereby supportingvthe outer bottom wall 28. The outer top wall 29 is similarly formed with downwardly and inwardly extending ?anges 46, the inwardly extending portions being indicated at 41. The outerside and front walls, 32 and‘ 33, are formed by the U-shaped, vertical wall mem her at resting on, the ?ange portions 43, the low er edge of the vertical wall member being formed with horizontal ?anges 43 which rest on the ?ange portions 43; Said lower edge is also formed with downwardly projecting lugs 49 that danger of injury or defacement of said walls is minimized. ’ While I have shown my invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modifications without de parting from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or as are speci?cally set forth in the ap pended claims. “ 10 ' I claim: ‘1. In a casing structure, the combination of adapted to ?t in openings or recesses 5| formed a chassis or supporting structure, bolts attached 15 in the inwardly extending ?ange portions 43,. to and extending upwardly from the chassis~ 16 whereby the vertical wall member is positioned with respect to the bottom wall member. The outer top wall 29 is adapted to rest on the verti cal wall member, the latter being provided with ,whereby the latter may be suspended, a top wall having openings through which said bolts extend, vertical walls, a bottom wall, means for detach ably mounting said vertical walls and said bottom inwardly extending horizontal ?anges 52 at its wall on said chassis after the latter is installed, 20 upper edge,- on which the inwardly extending , and concealed means for interlocking the upper ?ange portions 41 rest directly. The upper edge edges of the vertical walls with the top wall upon of- the vertical wall member is also provided with downward movement of the latter. . I lugs 53 projecting upwardly through openings or 2. Ina casing structure, the combination of a 25 recesses 54 in the ?ange portion 41, as shown in chassis or supporting‘ structure, bolts attached to 25 detail in Figure 3.- The outer top wall 29 is also and extending upwardly from the chassis where formed with openings 55, through which the bolts by the latter may be suspended, a top wall having 24 extend. , ,v openings through which said bolts extend, a bot The outer front wall 33 is provided with a rec tom wall, means for detachably securing said tangular outlet opening 56 opposite the outlet bottom wall to said chassis after the latter is 80 opening 2! ‘in, the inner front wall l4. A rec installed, vertical walls, means for positioning said tangular collar 51 extends inwardly from the vertical walls after said chassis is installed in edges of the openings 56 to the inner front wall, cluding concealed means for interlocking the 14; providing a discharge passage 58 between the lower edges of the vertical walls with the bottom 85, outlet openings 2| and 51, and separating such wall, and concealed means for interlocking the passage from the remainder of the spaces be upper edges of the vertical walls with the top tween the inner and outer casings. Adjustable wall upon downward movement of the latter. louvers 59 are pivotally mounted in the collar 51 3. In a casing structure, the combination of an for directing the discharged air in the desired innei: casing; said inner casing having ?anges direction, and also serve to conceal the fan to extending horizontally‘ from the lower edges of an extent dependent upon their position. The two opposite sides thereof; and an outer casing opening 56 and the collar 51 are square, so that said collar may be installed with the louvers ex tending either vertically or horizontally as de sired. The collar 51 has a ?ange 6| engaging the front wall 21. I - When installing the unit air cooler, the outer top wall 29 is ?rst placed over the inner casing, the bolts 24 being extended through the openings 55. The inner casing, carrying the air treating elements, such as the fan and the cooling coil, is then suspended in the desired position by comprising a bottom wall member, a second wall member providing front and side walls, and a top wall member, said bottom wall member hav ing ?anges at three edges thereof extending up 45 wardly and then inwardly to form channels and being adapted to be mounted on the'inner casing by sliding the same horizontally with the ?rst mentioned ?anges entering two opposite chan nels of the bottom wall member,~.said top wall member having ?anges at'the three correspond ing edges thereof extending downwardly and then means ‘of the bolts 24. The outer bottom vwall 28 is then positioned by sliding the same rear \inwardly, the inwardly extending ?ange portions wardly with the channels formed by the side ?anges 42 engaging the ?anges 45. The ver therein, said second wall member having pro? 65 then forwardly through the coils IS, the fan 23 wardly, said top wall member having ?anges at of the top and bottom wall members having slots jections at its upper and lower edges registering tical wall member is then moved downwardly .with and adapted to be inserted in said slots, into place, the lugs 49 entering the recesses 5!, whereby said outer casing may be assembled with The top wall 29 is then brought down onto the. out visible attaching means. vertical wall member, the lugs: 53 entering the 4. In a casing structure, the combination of a recesses 54. Nuts 62 maybe turned down on supporting structure; and a casing for enclosing the bolts 24 to engage the top wall 29, whereby the. supporting structure and comprising a bot the vertical wall member is held securely in place tom wall member, a second wall member pro between the outer top and bottom walls; In theeoperation of the unit the fan draws air viding front and side walls, a top wall member, 65 inwardly through the several groups of louvers 4 I , said bottom wall member having ?anges at three“ around the rear edges of the inner casing, and edges thereof extending upwardly and then in the three corresponding edges thereof extending 70 From the above description it will be seen that ‘ downwardly and then inwardly, and concealed 70 ‘ I have provided a cabinet, the members of which means for interlocking the inwardly extending are connected together byv interloclnng means ?ange portions of the top and bottom wall mem and the outlet passage 58. ' that are not visible externally. It will also be - bers with the upper and lower edges of the second noted that most of the walls may be positioned wall member, respectively, upon relative vertical after the supporting structure is installed, so movement of said wall members. 2,115,720 5. In a casing structure, the combination of a '7. In a casing structure, the combination of supporting structure having ?anges extending a chassis, means forconnecting said chassis to horizontally from the bottom thereof on two opposite sides; and an outer casing comprising .a structure for supporting the chassis therefrom, said chassis having horizontally projecting‘ a bottom Wall member, a second wall member ?angeseat the bottom thereof, a bottom wall providing front ‘and side walls, and a top Wall having upwardly and inwardly extending ?ange member, said bottom wall member having ?anges at three edges thereof. extending upwardly and then inwardly to form channels and being adapt portions adapted to engage said ?anges upon horizontal sliding movement of the bottom wall, a U-shaped vertical wall member comprising front and side wall portions and having down 10 10 ed to be mounted on the supporting structure by sliding the same horizontally, the ?anges'on the supporting structure entering two opposite channels of the bottom wall member, said top wall member having ?anges at the three corre 15 sponding edges thereof ext-ending downwardly and inwardly, the inwardly extending ?ange portions of the top and bottom wall members being formed to receive upper and lower edge portions of the second wall member upon relative vertical movement of the wall members, whereby said second wall member is supported upon» the [bottom wall member and retained in position between the top and bottom wall members. 6. In a casing structure, the combination of a chassis, a bottom Wall, means for connecting the chassis to a structure for supporting the chassis therefrom independently of the bottom wall, means for detachably mounting the bottom wall on the chassis by a horizontal sliding move 30 ment, a U-shaped vertical Wall member compris ing front and side wall portions, a top wall, and interlocking means for positioning said vertical wall member on said bottom wall and said top wall on said vertical wall member, said inter locking means being concealed when said ver tical wall member and said top and bottom walls are mounted. wardly extending projections at the ~ bottom adapted to engage the inwardly extending ?ange portions of the bottom wall upon downward movement of the vertical wall member, and a top wall having downwardly and inwardly ex 15 tending ?ange portions, said vertical wall mem ber having upwardly extending projections at the top thereof adapted to engage with said inwardly extending ?ange portions of the top wall upon downward movement of the latter. \ 20 8. In a casing structure, the combination of a chassis, a sheet metal casing enclosing the chassis and including a top wall having ?ange portions, vertical walls, and a bottom wall hav ing ?ange portions, means for connecting the 25 chassis to a structure for supporting the chassis therefrom independently of the sheet metal cas ing, means for detachably securing said bottom wall to said chassis after the latter is installed, means for positioning said vertical and top walls 30 after said chassis is installed including means‘ for interlocking the top and bottom edges of the vertical walls with the ?ange portions of the top and bottom walls, respectively, said inter-1 locking means being concealed by the walls when 35 the same are vmounted. _ ‘RICHARD ' HOLMES.