US3057287A

US3057287A - Ventilator expansion screed support and hood construction

Info

Publication number: US3057287A
Application number: US847404A
Authority: US
Inventors: John J Gray
Original assignee: Individual
Current assignee: Individual
Priority date: 1959-10-19
Filing date: 1959-10-19
Publication date: 1962-10-09
Anticipated expiration: 1979-10-09

Description

Oct. 9, 1962 J. J. GRAY VENTILATOR EXPANSION SCREED SUPPORT AND HOOD CONSTRUCTION Filed Oct. 19, 1959 INVENTOR. JOHN J. GRAY mat-w ATTO NEY5 United States Patent 3,057,287 VENTILATOR EXPANSION SCREED SUPPORT AND HOOD CONSTRUCTION John J. Gray, Los Angeles, Calif. (2147 W. Victoria Ave., Anaheim, Calif.) Filed Oct. 19, 1959, Ser. No. 847,404 8 Claims. (Cl. 98-115) The present invention relates generally to the construction industry and more particularly to a novel form of ventilator expansion screed support for use in buildings and especially useful in the construction of ventilators as customarily provided in the ceilings of certain areas such as bathrooms and the like.

The ventilator screed support itself in accordance with the present invention in its preferred form is made of metal strip and includes a generally flat central section or web together with a pair of preferably symmetrically arranged flank sections desirably formed integrally with the central web. Each of the flank sections includes a V-shaped portion and an attachment flange, the flanges being desirably provided with openings by which to attach the screed to structural members such as beams by means of nails or screws. In accordance with the invention the central section or Web is perforate throughout its extent, being provided with a multiplicity of holes therethrough having diameters in the normal type of the order of between about inch and about 7 inch, the holes being spaced apart by about the same distance. The lowermost extent of the V-shaped sections, that is the apexes of the Vs, constitute the screed guides for the present device against which building material such as plaster may be aligned during construction. The V sections afford a certain amount of lateral flexibility to the screed support whereby to resist transmission of stresses and thereby to localize such stresses as might crack plaster or otherwise deform wall and ceiling materials.

Where the present screed support is used in connection with a ventilator construction as in the ceiling of a bathroom or the like, there may be provided a ventilator hood desirably extending for a substantial portion or all of the length of the screed support proper. The side walls of the hood preferably terminate in the acute angle formed by the V-shaped section and the lower edges of the side walls thus received are sealed therein by a suitable plastic or caulking material. The side walls of the hood then continue upwardly and converge inwardly to a relatively small exhaust stack in accordance with known construction in order to carry moist, warm air from the room or other area being ventilated.

End clips or closure members are provided for ready mounting on the ends of the screed support. This permits the screed support to be cut to desired lengths on the job from elongated stock strips for use, for example, in venting under caves, in ceilings or other similar locations where normally no hood would be used in conjunction with the screed support.

Accordingly it is a principal object of the present invention to disclose a ventilating screed support particularly adapted for use in connection with the construction of a hood ventilator for use in the ceiling of buildings. Other objects and purposes of the invention are to disclose such a screed support including a central web section which is perforated throughout its length so that air can pass therethrough; to disclose such a screed support having downwardly pointed V-shaped sections flanking the central web section, the V-shaped sections being adapted to receive therein the lower edge portions of side walls of a ventilator hood used in connection with the screed support; to disclose an end clip or closure member for selective attachment to the end of the screed support proper; and for other and additional objects and purposes as will become clear from a study of the following description of a preferred embodiment of the invention taken in connection with the accompanying drawing in which:

FIG. 1 is a fragmentary perspective view of a ventilating screed support in accordance with the present invention.

FIG. 2 is a side elevational view, partly in section, of a ventilator hood and screed support combination in accordance with the present invention with structural details of ceiling construction omitted in the interest of clarity of illustration.

FIG. 3 is a left end view, with parts broken away, of the structure of FIG. 2 shown mounted upon structural beam members and with ceiling material such as plaster in place.

FIG. 4 is a perspective view of an end clip or closure member shown mounted on a fragmentarily shown end portion of a screed support.

Referring now in detail to the drawing and first to FIG. 1 thereof, an end portion of a ventilator screed support in accordance with the present invention is indicated generally at. 10 and includes a central perforate portion or web 12 having formed therein a multiplicity of openings 14 spaced throughout the extent of the web portion 12. The openings in the normal construction of screed support may have diameters of the order of about A; inch, the openings being disposed on centers spaced apart about A to inch. Flanking the central perforate web section 12 and preferably symmetrically disposed relative thereto are flank sections including V-

shaped portions

16 and 18 and outwardly extending substantially

coplanar attachment flanges

20 and 22 eacn provided with a number of

openings

21 and 23 for receiving mounting or fastening elements such as nails, screws or the like. The

lowermost tips

17 and 19 of the respective V-shaped portions are parallel and establish a plane spaced from and parallel to the

attachment flanges

20 and 22. Thus the

apexes

17 and 19 serve as screed guides for forming wall material flush therewith. By

preference flanges

20 and 22 may be substantially coplanar with web section 12.

The screed support as shown in FIG. 1 may extend longitudinally as far as desired and may be used in a number of different ways in building constructions, since the V-

shaped portions

16 and 18 permit a certain amount of expansion between the members to which the

flange portions

20 and 22 may be fixed, while the central web portion 12 facilitates the ventilation of areas such as space beneath the roof near the eaves of a house and elsewhere in domestic and individual construction. A particular use of the screed support in accordance with the present invention is illustrated by the structure of FIGS. 2 and 3 wherein a hood indicated generally at 30 includes a lower portion indicated generally at 32 having

end walls

33 and 34 and a pair of

side walls

35 and 36 which may be slightly divergent as shown and which are received in and terminate in the open spaces of the respective V-

shaped sections

16 and 18 of the screed support. In this arrangement, as is particularly seen in FIG. 3 where side wall 35 is received in the V-section 16, there may be provided a quantity of sealing or caulking material 38 furnishing a seal for the juncture of the side wall 35 and the V-section 16. A second quantity of such material 39 serves a similar purpose for side wall 36. Above the

side walls

35 and 36 the hood 30 includes a sharply convergent portion 40 terminating in an upwardly directed stack 42 which may extend into an attic, through a roof or otherwise as the construction details of the structure require. In FIG. 3 also is illustrated the preferred mode of attachment of the present device to a building in that the screed support 10 is shown with its

attachment flanges

20 and 22 attached by suitable fastening elements 44 and 46 to structural beam members 48 and 50. Sheets of plaster board, gypsum lath or the like 54 and 56 are also carried by beams 43 and 50 respectively in known manner and

plaster

58 and 60 is laid up on

sheets

54 and 56 using the

lowermost tips

17 and 19 of the V-sections as screed guides. It is to be noted that, in the event of a deformation created in plaster 58 as by building settling or the like, the flexibility of screed support afforded by its V-sections will minimize the transmission of such deformation to plaster 6t and hence will tend to isolate and localize the damage.

Means are desirably provided in accordance with the invention for closing off the otherwise open end of the screed support member 10. As best appears in FIG. 4, the closure member indicated generally at 62 is generally approximately U-shaped in configuration including a flat trapezoidal central section 64 and flanking or

side sections

66 and 68 joined to the central section 64 along inclined folded lines of

juncture

70 and 72 so that the

side sections

66 and 68 are inclined inwardly upwardly as seen in FIG. 4. Thus the

side sections

66 and 68 lie in substantially juxtaposed relation with the inner side walls of the V-

sections

16 and 18 of the screed support and desirably the side sections are formed so as to resiliently, frictionally contact the inner side walls of V-

sections

16 and 18. The closure member 62 may be retained in place by an inwardly bent lanced tab 74 formed in the upper edge of the center portion 64, the tab 74 serving to abut from beneath the central web section 12 of the screed support 10. It will be understood that the sheet metal of the screed support 10 and closure 62 is sufficiently resilient to springingly and detachably retain the parts in place as shown. Frequently, although not necessarily, closure 62 is most valuable when no hood is used in conjunction with the screed support. Whether or not a hood is used, the closure 62 expedites construction, since the screed support can be easily tin snipped to size on the job and the closures applied at the screed support ends to make a complete installation.

Accordingly it will be seen that there is here provided a convenient and economical structure by which to provide a ventilating expansion screed support member particularly useful with a ventilator hood for carrying away hot moist air from bathrooms and similar areas in a building. It is to be understood that the preferred embodiment of the invention herein shown and described is exemplary only and modifications and changes therefrom may be resorted to without departing from the spirit of the invention as defined in the following claims.

I claim:

1. In a ventilator expansion screed support and hood construction, in combination: an elongated ventilator screed support of thin sheet material including a flat central perforate web section, the outer marginal edge of each side of the web section being bent downwardly and outwardly and then upwardly and outwardly to form V-shaped troughs, the outer upper edge of each of the troughs being bent to form outwardly extending mounting flanges, the troughs being upwardly open and their apexes defining a screed guide Plane spaced downwardly from said web section; and hood means including side walls having spaced parallel lower edges received in said troughs.

2. The invention as stated in claim 1 wherein the flanges are coplanar and said plane is parallel to and spaced from the plane of the flanges.

3. The invention as stated in claim 1 including flowable sealing material in the troughs to sealingly receive the hood means lower edges therein.

4. A ventilating screed support comprising a thin elongated sheet member having a horizontally disposed perforate flat web section, the outer marginal edge of each side of the web section being bent downwardly and outwardly and then upwardly and outwardly to form V- shaped troughs disposed symmetrically relative to the web section, the outer upper edge of each of the troughs being bent to form outwardly extending mounting flanges, the apexes of the V-shaped troughs defining a screed guide from the central section and from the flanges.

5. The invention as stated in claim 4 wherein said apexes are downwardly directed and the V portions are open upwardly.

6. The invention as stated in claim 5 including a ventilating hood having approximately vertically disposed side walls received in said V-shaped troughs.

7. The invention as stated in claim 4 including an end closure consisting of a U-shaped member having a pair of side sections and a central section, the side sections being'received in the V-shaped troughs and frictionally gripping the inner side walls thereof.

8. The invention as stated in claim 7 wherein said closure is provided with an inwardly deformed part in the upper edge of the central section abuttable upwardly against the screed support central section.

References Cited in the file of this patent UNITED STATES PATENTS