US2447472A

US2447472A - Roof ventilator

Info

Publication number: US2447472A
Application number: US720158A
Authority: US
Inventors: George W Donley
Original assignee: DONLEY BROTHERS Co
Current assignee: DONLEY BROTHERS Co
Priority date: 1947-01-04
Filing date: 1947-01-04
Publication date: 1948-08-17
Anticipated expiration: 1965-08-17

Description

Aug. 17, 1948.

G. W. DONLEY ROOF VENTILATOR Filed Jan. 4, 1947 d'QWZ JNVENTQR.

Patented Aug. 17, 1948 ROOF VENTILATOR George W. Donley, Cleveland, Ohio, assignor to The Donley Brothers Company, Cleveland, Ohio, a corporation of Ohio Application January 4, 1947, Serial No. 720,158

This invention relates to ventilators, and more particularly to ventilators that are adapted for use with slanting roofs and has for its principal object to provide a ventilator of this character which will enable the circulation of air through the roof openings with which it cooperates and which will reduce to a. minimum the ingress of rain, snow, or other moisture therethrough and thence through said opening.

I accomplish the foregoing object in and through the construction and arrangement of parts shown in the drawings hereof, wherein Fig. 1 represents a perspective view of my ventilator and of the parts of the roof to which it is applied and with which it cooperates; Fig, 2 a front elevational View of the ventilator shown in Fig. 1; and Fig. 3 a sectional view taken on the line 3-3 of Fig. 2 and looking in the direction of the arrows.

Describing the various parts by reference characters, l denotes sheathing boards of a roof of the slanting type and I I the shingles, which may be of wood, tile, slate or felt, and which are supported by the said boards. l2 denotes side flashing members which are adapted to be inserted beneath the shingles and which are secured to the sheathing boards I0, as by nails I3.

l4 denotesgenerally the rear sections and I l the front sections of the side members of the ventilator, the former of which are preferably integral with the side flashing members l2, which extend rearwardly beyond the rear sections M with the extensions i of their rear ends overlapped by the side edges of the transversely extending rear flashing member l5 which is secured to the appropriate sheathing board as by means of nails It. The rear sections M extend forwardly and upwardly in triangular shape from the rear and side flashing members while the front sections 14*, the upper edges of which are forwardly and upwardly and then forwardly and downwardly curved, are secured to the upper portions of the rear sections, the rear portions of the front sections being shown as overlapped by the corresponding portions of the rear sections at l4 and the overlapping portions being united, as by spot welding.

It will be noted that the bottoms of the front sections are in a plane substantially parallel with the plane of the front flashing member l8 and are vertically spaced from the latter plane, for a purpose to be described; also that the curvature of the upper edges of the forward sections provides, with the roof or cover section of the ventilator and the bafile means (to be described),

9 Claims. (Cl. 9842) 2 a front hood having a downwardly directed discharge outlet at the front end thereof.

A front counter flashing member I! projects beyond the front edges of the rear sections l4 and is deflected downwardly at its rear and se cured to the front flashing [8 to provide therewith a rearwardly extending pocket or counter flashing for the reception of the shingles. The front flashing member I8 is overlapped at its rear by and. secured to the front ends of the side flashing members 12 as by spot welding and is secured to the sheathing board therebeneath, as by nails I8.

l9 denotes a transversely extending wall having a flange 20 at its base by which it is supported, as by spot-welding, upon the top of the counterflashing member I! and which unites the front edges of the lower sections I4 of the side members, forming an angle of substantially with a plane including the lower edges of said side members, the lateral ends of the wall I9 being secured to the fronts of the sections M, as by flanges 20 spot welded to the latter. The wall l9 forms a part of a baffle, the other part of which baflle is formed by a wall 2| which extends forwardly from the top of the wall I!) and which is united to the forward sections [4 of the side members, with its bottom preferably in the plane of the bottom edges [4 of the said sections, but which wall 21 terminates at a considerable distance forwardly from the vertical wall It, for a purpose to be explained. The wall 2| is attached to the sections M of the side members, as by means of flanges 2'2 spot welded to the latter. a

From the flashing member l5, the cover or roof 23 of the ventilator extends forwardly and then downwardly, being secured to the upper edges of the rear and front sections l4 and I l of the side members and forming with the said front sections a front discharge hood. It will be seen that the side members can be considered to be provided with symmetrical recesses, or cut out sections, extending rearwardly from the front thereof to form overhanging front sections and that these recesses are united by the walls I9 and 2| and the screen 24. At its extreme forward end the cover is provided with a rearwardly extending flange 23 which forms the front supporting member for a, screen 24 which extends from one side member to the other, the rear end of the screen being supported upon the front of the Wall 2!, as by means of a metal strip 25 having its front portion spaced from the front of the wall 22-to form a pocket therewith for-the reception of the rear end of the screen and having its rear portion secured to said wall, as by spot welding.

The walls l9 and 2| of the baffle form an angle of approximately 90 with each other, it having been found in practice that by the use of this angular relation, eflicient results have been obtained in preventing moisture, in the form of rain, snow or sleet, from being driven through the screen 24 by strong winds blowing upwardly along the roof in which the ventilator is installed and that the winds or currents of air which are delivered in a direction substantially parallel with the roof are largely deflected laterally by the open-ended pqchet formed by the baiiie members l9 and 2| and the portion of the roof therebelow, and that only a very small pro-. portion of such strong winds or currents of air will pass through the screen and into the ventilator body. I have found that even better results are obtained by making the angle between these walls slightly acute whereby the wall 2| extends forwardly from the, wall IQ and slightly toward the plane of the flashing l8 and of the portion of the roof to whichv the ventilator is secured. In practice the angle between these walls has been approximately 37 instead of 90, and this angular relation between the walls has enabled the, bailleformed thereby to cooperate most effectively, in connection with the portion of the roof-beneath the l 2 l and the location of -the outlet opening from the ventilator and the location of; the screen 24, in obtaining a normally free outward circulation of air from the roof-Opening and also in minimizing the admission of rain, snow, or other moisture content of the airimpelled by strong winds blowing upwardly along thereof on which theventilator may be installe Having thus described by invention, what I claim is:

1;. A ventilator of thecharacter described comprisingsidemembers each having an upper edge extending forwardly and upwardly from the rear end thereof and thence forwardly and downwardly-and each having a recess extending rearwardly from the front end thereof and defined by a rearwardly extending bottom edge of the upper front portion merging at its rear end with the upper end of the front edge of the rear portion of said side member which front edge extendsdownwardly from the point of merger, the said recesses being symmetrical, a bafile formed by a wall extending across the last mentioned edges of the recesses and also extending substantially the full width of the ventilator and awall connectedat itsrear end to the upperlend f the s mention all and rte din er the rearwardportion of thebottom edges of the f nt ds f h e e es nd ls extending stantially the full width of the ventilator with itsfrent spaced from the front ends of the front portions of the, side members, a cover member sec rjee'w the top edges of the side members and extending to the front ends of the latter and forming therewith a forwardly and downwardly extending hood, and a screen interposed and supported between the front of the second baffle wall andthe front ends of the upper portions of the' side walls and the front end of the said cover member and extending the full width of the ventilator.

2. In the ventilator set. forth in claim. 1, the top edges of the sidemembers being upwardly convexlycurved above theseoond wall andthe screen whereby the front of the cover will form an upwardly convex hood with the screened outlet located in the front of said hood while the walls form an angular baffle at the rear of said outlet.

3. In the ventilator set forth in claim 1, the top edges of the side members being upwardly convexly curved above the second wall and the screen whereby the front of the. cover will form a hood with the screened outlet, located substantially parallel to the lower edges of the side members and in the front of said hood, and the bottom edges of the upper front portions of the side members being substantially at right angles to the front edges of the lower rear portions of the side members, whereby the walls secured to i said edges form; abafile the front and rear members whereof are at substantially right angles to each other, which bafile defines a bafile or ventilator surface immediately adjacent the ventilator outlet.

4. In the ventilator set forth in claim 1, the top edges of, the side v membersv beingv upwardly convexly curved above the second wall and the screen whereby the front of the cover will, form a hood with the screened, Outlet located within the front of said hood, and the bottom edges of the upper front portions, of the sidemembers being slightly inclinedrearwardly toward the front edges of the. lower rear portions of the side members, whereby the walls securedto said edges form a 'bafiie the front and rear members whereof form an anglewith each other ofslightly less thanQO".

5. In. theventilator; set forth. in claim 1, the top edges of, the. side: members being upwardly convexly curved above the second wall, and the screen whereby the front of the cover will form a hood with the screened outletlocated within the front of said hood while the wallsiforrn, an angular baffle-at the rear of said outlet, a front flashing member, supported at the bottoms of the downwardly, extending edgesofthe fronts of the rear portions of the side memberaaoounter fla hin m m r ec r 9. h rom la h n em r and x endin upwardl a d. forwardly h f m tq rm a packet. for a or ion of a course shin les n he bas or h first mentioned wall extending to, and; being suppo ed ha min e fla in membe A i to -of; t e haract sp ci iedacom prising side and rear flashing members adapted to be secured to the shingle supporting members of a slanting roof, side members comprising each a rear section secured at its bottom to the respective side flashing member and extending upwardly therefrom and forwardly, and. upwardly from the rear fiashingmember and a, front section secured to theupper portion; ofeach rear section and extending forwardly, and upwardly and forwardly and downwardly therefrom and the front sectionsproviding with their respective rear sections rearwardly extending symmetrical recesses, each of said recessesbeing defined by the front end of a rear section which is sub.- stantially normal to and extends upwardly from the respective sideflashing member and which merges at its upper end with the portion ofthe bottom of, the front section which extends forwardly, therefrom, a cover member extending forwardly and: upwardly from the rear flashing member and secured to thetops of'the sidemembers, a wallconnecting the front ends of the rear sectionsv of the side members and being substantially coextensive inwidth with. the height of saidends, awall-extending forwardlyfrom-the upper end of the first mentioned wall and connecting the bottoms of the front sections of the side members, the front end of said cover member projecting beyond the front end of the second wall with its end in substantially the plane thereof and forming a discharge outlet with the second wall and with the sides of the front sections of the side member, a screen supported between the front end of the cover member and the front end of the second wall, and a flashing member secured to the bottoms of the front ends of the rear sections of the side members and extending forwardly therefrom beneath the first mentioned wall.

7. A ventilator of the character specified comprising side and rear flashing members adapted to be secured to the shingle supporting members of a slanting roof, side members comprising each a rear section secured at its bottom to the respective side flashing member and an overhanging front section having a lower surface vertically above but offset from and substantially parallel to the lower surface of the said rear section, said rear section having exposed front edges, a cover member associated with said rear flashing member and secured to the top edges of said side members, a wall secured to and extending between the exposed front edges of said rear sections and completely covering same, a wall associated with the upper end of said first wall and secured to and extending between the lower surfaces of the said front sections of said side members, said second wall extending about one half the length of said overhanging front sections, and a screen secured to and between the bottom edges of said overhanging front sections to form a completely enclosed air passageway in the ventilator whereby air must flow in under the overhanging portion thereof and then vertically upwardly through said screen to enter the ventilator,

8. A ventilator of the character specified comprising side and rear flashing means adapted to be secured to a slanting roof, a pair of side members each having a rear section secured at its lower edge to the respective side flashing means in spaced but parallel relation and an overhanging front section having a lower surface vertically above but offset from and substantially parallel to the lower surface of the said rear section to expose front edges of said rear sections, a cover member associated with said rear flashing member and secured to the top edges of said side members, a wall secured to and extending between the front edges of said rear sections and completely covering same, a wall positioned against the upper end of said first wall and secured to and extending between the lower edges of the said front sections of said side members, said second named wall exposing a portion of the area between the lower edges of said front sections, and a screen associated with said second named wall and the lower edges of said overhanging front sections to cover the exposed area therebetween to form an air opening in the ventilator whereby air must flow into the ventilator under the overhanging front portion thereof and then vertically upwardly through said screen to enter the ventilator.

9. In the ventilator as described in claim 7, said second named wall being associated with said first named wall and being inclined downwardly towards the plane defined by the lower edges of said rear sections so as to form an exposed angle between said walls of slightly less than GEORGE W. DONLE'Y.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,264,056 Geibig Apr. 23, 1918 1,742,185 Bourke Jan. 7, 1930 2,300,842 Leslie Nov. 3, 1942 2,363,879 Leslie Nov. 28, 1944 2,382,076 Leslie Aug. 14, 1945