US2874628A - Removable ventilating hood construction - Google Patents

Description

Feb. 24, 1959 R. ISRYNE '2 2,874,628

REMOVABLE VENTILATING HooD.coNsTRUcTIoN Filed May 9, 1955 52 im f lumix.,

4free/veg@ United States t fasCe REMovABLE VENTILATING noon t 1 coNsrRUcrroN 3 Claims. (Cl. 98-115) u 'I'hepresent invention relates generally to Ventilating hoods which are mounted over stoves and the like in order to gather fumes and vapors and direct them to a Ventilating duct, and more particularlyto such hoods that are detachably mounted upon portions of the building structure from which the hoods may be detached for easy cleaning.

Many different types of hoods and similar members are widely known for use in connection with Ventilating ducts. These hoods are commonly located over stoves, steam tables or similar equipment. Typically, they are provided with an opening in a top wall or in a side wall which registers with anopening in a Ventilating duct. Fumes orf vapors rising underneath the hood are ex'- haustedY from the roomby passing through this opening into the duct-'which conductsthem to the atmosphere. A fan may be located in the Ventilatingv duct or at the inletlthereto in order to force air through the duct. In order `to maintain the requiredrregistration between the opening'in the wall of the hood and the opening of the Ventilating duct, hoods of-this character have generally been permanently mounted in position.

The inside surfaces of hoods over'stoves and other cooking equipment accumulate *dirt and grease after they have been in use for awhile, so `that they require cleaning from time to time. Cleaning is `often* an awkward, if not a difcult job, becauseof the Alocation of the hood A over a-stove, which makes it impractical `to put a ladder underneath the stove, and also the difficulty of working on the insidej surface of the hood. Cleaning is greatly simplified if the entire hood can be removed from its normal y-position and -taken to another location Where it may be.jcle'aned easily. There is also eliminated need for cleaning up any dirt or material falling oi the hood.

For this reason, it is a general object of my invention to removably mount a Ventilating hood so that it can be easily removed from its normal operating'position to render the interior or undersurface of thejhood more easily accessible for cleaning or other maintenance,

; -It is another object of my invention to provide a ventilating hood construction! which can be mounted upon portions of jthe normal building structure so that the hood can be Veasilyengaged or disengagedffrom the build-` ing'structure by bodily movement of thehood, u sing a novel arrangement for hoodA mounting means. t

- A` further object of 4my. invention isto lprovide a ven tilating hood construction which is removably supported upon an ordinary building structure so that the hood may be removed bodily from its normal operating position and taken to a place suitable for cleaning andwashing the hood.f

A-still further object is to support a hood on conventionalV elements of `a building, such as a wall and: shelf or cabinet, in such a way that rthe hood is easily removablefy'et leaves no unsightly anddust catching cracks between it and the structure on which it is mounted.` l These and other objects of myinvention havel been ac complis'hed by mounting a Ventilating hood directly upon `Patented Feb. 24, 1959 2 elements of the normal building structure using disengageable fastening means including elements engaged by a simple movement of the hood. The hood is designed especially for use in conjunction with a building structure which ordinarily includes a vertical wall and a shelf, a cabinet, or otherv laterally projecting structure which has a downwardly facing undersurface beneath which the hood is located. The building structure often encloses a Ventilating duct which may belocated within the wall or within the cabinet, or partly within each. The hood may have a vent opening in one wall which is maintained in registration with an inlet opening in the Ventilating duct; andA accordingly the hood is closely adjacent at least that one surface of the building structure which has in it the inlet to the Ventilating duct.

In a preferred embodiment, the hood has at its rear i side a downwardly facing surface provided by a downwardly facing shoulder which is adapted to engage and rest upon an upwardly facing surface on a fixed support in the form of a ledge formed in or upon the wall or other portion of the building structure. This arrangev ment is adapted to support the rear end of the hood and This fastening Ameans may be a snap-type fastener, a

headed pin and a key hole slot, a slotted pin and wire connecter, or any othersuitable and conventional type of fastener which comprises elements that can be readily engaged and disengaged,preferably by movement of the hood relative to the building structure.

v `When the hood has avent opening in one wall, the. elements of the fastening means are preferably solrelated that the movement which engages them is that same moven'lentwhich` brings the vent opening of the hood into registrationvwith the opening into the Ventilating duct. Hence at the end of the movement placing the hood in position, the fastening means are engaged to support the hood in place and no further operation or action is required. Y

How the Vabove and other objects of my invention are attained will be more readily understoodby reference to the following description and to the annexed drawings, in which: t

Fig. 1 `is a side elevation of a preferred form of my inventionin which the Ventilating hood is mounted, according to my invention, underneath a cabinet, the hood being in normal operating position;

Fig. 2 is an enlarged vertical median section through the hood showing the means for supporting' the hood in place; A I

Fig. 3 is an enlarged section on line` -Sl of Fig. 2

showing one type of fastening means for the forwardY portion of the hood; ,t `Fig. 4 isV an enlarged vertical section similar to Fig. 2 showing a` modied form of myin'vention in whichthe location ofjthe vent inthe hood wall istchanged and different types of fastening means are employed; l Fig. 5 is an enlarged fragmentary section in the plane of Fig. 4 showing details offastening means;

Fig. 6Y is an enlarged fragmentary section in the plane" of Fig. 4 showing a variational form of shoulder meansat the rear of the hood in greater detail; `and Fig. 'l is a fragmentary section similar Vto Fig. 5 showing a variational form of fastening means.

Referring now to the drawings, Ythere is shown in. Figs. `1 to 3 a preferred, bnttypicaL form of my invenfj tion. Generally indicated at 10 is a ventilatingwhood Awhich is placed over stove 12 in order to gather and'con# duct from the room the fumes and cooking vapors which rise. from the stove. As is typical of many residential in-v stallations at the present time, storage cabinet 14 is placed over the stove in order to make the maximum use of the space availahleinlthe room. Cabinet 14 pro,-4 jects Qutwardly away from al vertical faceV of wall 15 and is usually attachedftc` and supported by the wall. Thus cabinet 14 and wall 15. are parts of the conven-J tional building or support structure upon which the hood is mounted. Of course it will be realized that cabinet 14 is typical of other portions of the building structure to which the hood may be attached and Ythat other similar projecting structures, as for example, a shelf, an over-hanging portion of the wall, and the Vlike may be used equally well. Hence, the specific type of cabinet illustrated is shown only for purposes of disclosure and without any intention to therebylimit the invention.

In accordance with common practice, a Ventilatingduct 16 is enclosed within the cabinet or wall. Duct 16` is vertically extending and the lower end of the duct has a downwardly facing opening, as indicated at 17- in Fig'. 2. The duct may be rectangular or round in cross section. The shape or location of the Ventilating duct is not limitative upon the present invention; and many different installations are encountered because of differ-ent localized conditions.

The particular hood here shown has two similar side walls 20 and a back wall 21, all of which are of equal height. Walls 20 and 2 1 depend from and are joined attheir upper edges to topwall 2 2. Front wall 23 has arelatively short vertical portion that is connected by a sloping portion to top wall 22. Top wall 22 is provided with exhaust opening 25 through which vaporspass to reach Ventilating duct 1,6. As shown in Fig. 2, exhaustopening 25 is in registration with the open lower end 17 of the Ventilating duct, It is preferable, though not necessary, that openingy 25 be surrounded by a shallowv collar 26 which is slightly smaller than openingl 1 7. Collar 26 lits within the duct to direct the gases upwardly into the duct and eliminate leakage between the hood and cabinet.

As is typical of such portions ofthe building structurer as those beneath which hood 10 will be usually located, it will be seen that the undersurface of cabinet 14 isv relatively flat and of a substantial area. Hood 10 has` its top wall 22 flat in order to conform to the shape o f the, undetsurtace. 0f. cabinet 14, although my invention iS not necessarily limited. t0.. a hood. with. a dat t0n wall. However, this Shane Qt the hccd is. preferred. in ccnbinaf tion with a shelf,'cabinet, or the like since its top wall then conforms.. in shape t0. the. undersurface cf cabinet 14,k or other element and the hoodwall' may be held' against the undersurface, ofl thel cabinet, or at least closely adjacent to it.

At its rear'side, thev Ventilating hood is provided with means forming a downwardlyfacing surface on the hood'. This may b e provided ina number of different ways, but in Fig. 2 it is shown as formed by doubling a part of the wall of the hood back on itself at the upper eds;` of rear wall 21, as indicated at 2,8. "Ehe underside of. this. fold or shoulder. 2.8. in the hood wall. movidas. a.. downwardly facing surface which projects outwardlyand rearwardly beycnd that ncttcnf Qt rear wall. 2 1 which is immediately beneath the. fAQld.- Thus the under- Surface 0f fold. 2.8 can engage andren upon they upward- 1y-l taeins tcp surface 0ffixed. ledge cr.- blccls. 30 which, is attached to, and therefore maybe conaideredvr as part of wall 15. The top ofblock 3l) isspaced suciently'below cabinet 14A that-fold 28 may be slid` over ledge 30 and into position by horizontal movement of the hood and shoulder 28. This may be accomplished by moving the hood bodily in a horizontal direction relative to cabinetv lfiand Wal11.5

The lower portion ofy rear wall 21 is preferably oset rearwardly to bring part at least of the rear wall 2J, into close proximity with the face of building wall 15, when the hood is moved backwards toward the wall as far as it can go. It is obviously desirable that the gap between the hood and the building wall be as small as possible. The offset in the rear wall can be eliminated in various ways, as by setting block 30 into the building wall or by constructions described later.

The shoulder and ledge arrangement at the rear side of the hood partially supports the hood; but it is obviously desirable to support the hood' also at a position spaced frwardly of the shoulder at 28. For this purpose, I prefer to provide some suitable type of disengageable fastening means which is located near the forward face of cabinet 14.

Generally speaking, the fastening means comprises separable elements on the cabinet and on the hood, the elements being engageable, with each other to h oldf the hood in place` or disengageableV to allow the hood to be removed. A simple fastener is indicated at- 32. As seen best in Fig. 3, it has as one element a spring-type sheet metal fastener which is mounted on the bottom of cabinet 14. Top wall 22 of the hood is provided with the other element in the form of opening 33 of a size which can be forced over the spring fingers of fastener 3 2. The lingers are displaced inwardly as the top wall is passed over them and spread out afterwards to a diams eter larger than hole 33. to hold the hood in place, as indicated in full lines in Fig. 3. Not only does fastening means 32 support the hood from the cabinet at this forward position, but it is also adaptedto hold the hood againsthorizontal movement which would disengage the shoulder 28 from block 30. More than one snap fastener may be used if desired.

To mount the hood on the building structure, the hood is brought up underneath the cabinet to a position from which shoulder 28 slides over the ledge at 30. This may -be done by horizontal bodily movement of the hood toward wall 15. At this time, the hood is spaced from the undersurface of cabinet 14 and is tilted slightly from the horizontal, as indicated by the dot-dash lines in Fig, 2. The rearward movement ofthe hood has brought collar 26 opposite duct opening 27 and opening 33 in the top wall opposite fastener 32. Now by lifting upwardly on the front end of the hood, the hood is rotated slightly about shoulder 28 and moves from the dotted line position to the full line position in Fig. 2. Collar 26 enters opening 17 so that the vent opening 25 in thehood i sin registration with the open end of Ventilatingducty 16'. This same upward movement of' the hood 4relative to the cabinet engages the fastening means since opening 33 in the upper wall passes over and engages fastener 32 so that the hood is now supported in place with hood walls 22 and 21 against or close to cabinet- 14 and wall 15. Although the movement for mounting the hood has been described as having two distinct components, it is in practice a single, continuous movement. When mounted in place, the fastening means holds; the hood against forward sliding movement which would disengage shoulder 28r from the ledge on which it rests.

To dismount the hood, the movements just described are reversed. The hood is moved down, moving the top wall from thev solid line position to the dot-dash Vposition of- Fig. 3 to disengage elements of the fastening means. Then the hood can be pulled forward to, disengage shoulder 28 and ledge 30. The hood is now free to beiaken to any place desired for cleaning or the like.

A variational form of my invention is shown in Figs. 4, 5 and 6 that is especially suited to a hood constructed inl the same way as before, except that vent 35 is located in the rear wall of the hood instead of in the top since duct 16a is in wall 15 and has an inlet 17a in the face of the wall. Also, the upstandingflange around the vent is omitted and a seal between vent 35 andthe inlet .to the surrounds vent 35 on the outside of the hood and llS a the space between the hood and wall 15.; y Y p 1 The downwardly facing surface on the hood is proyidedby one or more pins38mol1ntedgon the =back wall and `extending rearwardly therefrom. There are preferably two such pins horizontally spaced apart and, placed near the corners of the hood. Only one pin is Yshown and described since both Varenalike. AThe upwardly facing surface upon whichn pin 3 8 rests, is provided within rbuilding wall and Vis formed by a sleeve 39 receiving pin 38. There are two such sleeves, one for each pin 38, spaced the same distance apart as pins 3S. Sleeves 39 are typical of means that may be provided in the wall for locally reinforcing the plaster or similar facing on the wall to receive the wear and the load imposed by pins 38. It will be evident without further illustration that these parts may be reversed, i. e., the pin may be attached to the wall and enter a hole in the rear wall of the hood; but the same general relationship of engaging surfaces is maintained.

In this form of my invention, the fastening means includes an element on cabinet 14 in the form of a wood screw 40 or a similar member located on the undersurface of the cabinet. The complementary member on the hood engaging screw 40 is key-hole opening 42 in the top wall of the hood. Opening 42 is provided with an enlarged end 42a which is large enough to pass over the head of screw 40 and which is connected to a narrow elongated portion 42h of a size .to receive only the shank of the screw.

To mount the hood in place on the wall, the hood may 'be lifted up underneath the cabinet and the head of each screw 40 is inserted into the large end of the associated opening 42. In this position, each pin 38 is horizon tally opposite a sleeve 39 in the wall. Bodily horizontal movement of the hood relative to cabinet and wall causes the pins to slide into the sleeves and rest upon an upwardly facing surface in the sleeve, and at the same time screws 40 engage the narrow ends of slots 42 for the purpose of supporting the hood at a position near the forward face of cabinet 14.

Since the fastening means does not restrain the hood against horizontal movement in a direction to disengage pins 38 from sleeves 39, separate means for so resning the hood is provided. Although other similar devices may be used, the means here shown comprises an upwardly extending pin 44 mounted on the free end of leaf spring 45 which normally causes the pin to project upwardly above the top `surface of the hood wall. The pin is depressed by engagement with the undersurface of cabinet wall when the hood is moved into position, but when the hood reaches the proper position as shown in Fig. 4, .the spring pushes pin 44 upwardly into bore 46 in the cabinet. Engagement'of the pin with the bore in the cabinet prevents the hood from being moved horizontally away from wall 15. When it is desired to dismount the hood, spring 46 is depressed to the dot-dash position of Fig. 5, disengaging pin 44 from Ebore 46. The hood may now be pulled to the left, freeing it from the mounting means at both the front and back of the hood.

The above description indicates, without the need of additional illustration, that various changes may 'be made, within the scope of my invention, in the shape or location of the hood. For example: the rear wall of the hood may be so greatly reduced in vertical dimen'siomor the hood raised relative to inlet 17a, that duct inlet 17a is actually below the lower edge ofthe rear wall of the hood. Likewise, pins 38 may be relocated at any position lower down on the hood rear wall.

Although it is preferred to use fastening means which have elements on the cabinet or other portions of the building structure, andoii the" hood which can be engaged by movement of the hood as a whole, there may arise installations wherein fastening means of this character areanot practical. Therefore there is shown in Fig. 7 another type of fastening means which is adapted to be separately manipulated afterthe hood has been moved substantially into its nal operating position. This type of fastening means comprises. a short wire or rod 50 mounted on the cabinet by means of screws 51. On the hood there is a slotted pin 53 which is.'rotatably mounted in the top wall of the hood and is provided on its lower end with wings 54 by means of which the pin may be manually rotated. The upper end of the pin is provided with a transverse diametral slot 55 having a spiral configuration with its axis coincident with the axis of pin 53. To engage these two elements of the fastening means, slot 55 is aligned lengthwise with wire 50 and then the pin is pushed upwardly to engage the wire in the slot. At the same time, the pin is rotated by grasping wings 54 causing the pin to move upwardly` and seat the wire in the lower end of the slot. This action draws the top wall of the hood tightly up against the undersurface of the cabinet. This type of fastening means is quickly released by turning pin 53 in the reverse direction, the weight of the hood causing it to drop and disengage wire 50. This type of fastening means at the forward portion of the hood may be combined with either of the downwardly facing shoulder constructions described.

From the foregoing, it will be understood thatvarious changes in the design and arrangement of the elements of my improved hood construction may occur to persons skilled in the art without departing from the spirit and scope of my invention. Accordingly, it is to be understood that the foregoing description is considered as being illustrative of, rather than limitative upon, the appended claims.

I claim:

1. A Ventilating hood construction for use in conjunction with a building structure provided with an outlet duct, comprising a hood having a relatively at top wall, side panels and a substantially vertical rear wall, said top wall including an inclined front portion, one of said walls having means providing an opening for mating engagement with said duct, fastening means on a vertical surface of a juxtaposed building structure for detachably supporting said rear wall in relation to said juxtaposed portion of said building structure, and said top wall being provided with an aperture for the reception of a screw for securing the top wall in juxtaposition to a relatively forward opposed portion of said building structure.

2. A Ventilating hood construction for use in conjunction with kitchen cabinet construction provided with an outlet duct, comprising a hood having a relatively flat top wall, side panels and a substantially vertical rear panel, said top wall'including an inclined front portion, said top wall having at least one aperture complemental to said outlet duct, said rear panel being arranged to intersect said top wall at a point within the plane of the rear panel, the top portion of the rear panel being bent forwardly to provide a reentrant bend and a horizontal, rearwardly offstanding flange, a setting block forming a shelf for said flange secured to a structural surface adjacent to said rear panel and screw supporting means positioned between the outlet duct and the point of intersection between the top wall and said inclined front portion.

3. A Ventilating hood construction for use inlconjunction with kitchen cabinet construction provided with an outlet duct, comprising a hood having a relatively at top wall, side panels and a substantially vertical rear panel,

` said top wall including an inclined front portion, said rear panel having at least one aperture complemental to said outlet duct, said rear panel intersecting said top wall` einem et, auhstantially right. angleay rearwardly projeetng pins, -Beierelleee Cited in the le of this patentv eeeured t0 said rear panel, cpmplemental' Snrporting UNITED STATES PATENTS sreeyes adapted 1o receive. saidp'ins carried by Str-11 1174 851 fslekleffrtV 111.y Mar. 7 1916 rural surface adjacent te, Sai@ rear Panel, Screw means 1'776991 nier/1e sept. 3o' 1930 carried. by and projeetinedewnwardly from said eabinee 5 Y1f969f5155 'Klmme L Aug. 7 19'3'4 e key hole Qpenng in said top wall c ernnlememal to s aid 2,464,473 -vfesse'l Maf.' 15, 1949 screw means. te. permit limited horizontal sliding move 2,487,697 s01mgag1 Nov. 8, 1949 ment, and pivoted latch means on said top wall adjacent 2,528,844 RQbertsQn Nov. 7, 1950 to. said screw means to prevent inadvertent movement of m 2,553,86'6 Olson May 22, 1951 said hood. 2,750,867 Meyer June 19, 19,56

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