US2640413A

US2640413A - Draft diverter

Info

Publication number: US2640413A
Application number: US227498A
Authority: US
Inventors: Buckley R Reed
Original assignee: US Department of Army
Current assignee: US Department of Army
Priority date: 1951-05-21
Filing date: 1951-05-21
Publication date: 1953-06-02
Anticipated expiration: 1970-06-02

Description

June 2, 1953 B. R. REED DRAFT DIVERTER Filed May 21, 1951 mvmrbR fiL/CA/Gl/ Qe ecf ATTORb JEY Patented June 2, 1953 Fl x it 5.1 0.9% Q

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the outer flanges 22 of the spacers are not longer The preferred form of spacer illustrated by way of an example comprises an inner flange 2| and an outer flange 22 which are connected together in substantially parallel relation by a web 23. The arrangement of flanges and web is substantially 'Z-shaped but obviously could be I-shaped, C-shaped or possibly of other shape within the scope of the invention as hereinafter claimed.

As best seen in Figure 3, the spacers have the outer peripheries of the outer flanges 22 fixedly connected to the inner peripheries of the outer sections I1 and 18 in any suitable manner as by being welded thereto. Likewise, the inner peripheries of the inner flanges 2| are similarly connected to the outer peripheries of the inner sections l2, l3 and I4 so that the webs 23 extend substantially radially of the assembled inner and outer sections whereby to provide substantially rigid spacing means for maintaining the spaced concentric relation of the inner and outer sections. Of course, the outer and

inner flanges

22 and 2| respectively maintain the vertically spaced relation of the outer and inner sections. In addition to the aforesaid strengthening provided by the webs 23, the webs also provide baffles tending to break up eddy currents between the inner and outer diverter sections which otherwise would ad- Preferably,

than the overall length of the two outer sections "and the lengths of the webs 23 may be similarly restricted. However, the lengths of the inner flanges 2! are necessarily greater to provide upper and lower end portions extending above and below the outer sections for connection respectively with the upper inner section I4 and the lower inner section l2.

The lower ends of the inner flanges 2! are doubled on themselves as at 24 and formed to provide bights 25 in which are seated guy anchors 26 of any suitable form, such anchors being swingably or hingedly seated in such bights. The doubled end portions 24 are preferably secured together to close the bights 25. Any suitable means may be utilized for this purpose but in the preferred form, such means comprise rivets 21 which pass through aligned holes 28 in the doubled end portions 24. As shown, the rivets 21 also pass through the lowermost inner sections 12 to secure the doubled end portions to the such section. This arrangement supplements the previously described welded connection of the parts to provide additional strength to compensate for the additional strains imposed by guys, not shown, secured to the guy anchors 26.

In the form of diverter illustrated, there are three inner divertersections and two outer diverter sections. Obviously, the number of sections may vary with the needs of the situation. Thus, there may be as few as two inner sections with but a single outer section therebetween, or there may be any desired larger number of inner and outer diverter sections.

It is apparent from the foregoing that the inner and outer sections are substantially plain sections of tubular stock with the exception of the uppermost inner section 14 which requires the end wall I5. Moreover, it is apparent that no modification of the inner and outer sections is required to connect them together by the spacers 20 of the in vention. Finally, it is apparent that no additional modification of the sections is necessary to provide guy anchors for the pipe I0, and that the particular spacers serve not only to increase the cept as hereinafter claimed.

I claim:

1. In a draft diverter for seating atop a chimney, the combination with three tubular diverter inner sections arranged in axially spaced and aligned relation, the uppermost inner section having a closed upper end providing a cap, and two axially spaced and aligned tubular diverter outer sections surrounding said inner sections in outwardly spaced concentric relation so as to span the spaces between said inner sections and overlap the adjacent ends thereof; of a plurality of spacers for connecting all of said sections together in said spaced relation aforesaid, said spacers being substantially identical and being substantially Z-shaped in end elevation to provide inner and outer flanges connected by a web, said outer flanges each having a length not greater than that of the combined length of said outer sections and being fixed to the inner peripheries thereof,

said inner flanges being substantially longer than said outer flanges and having upper and lower ends extending above and below said outer sec- :tions, portions of each inner flange being fixed to the outer peripheries of all of said inner sections, said lower ends of said inner flanges being doubled upon themselves to. provide bights, and looped guy anchors swingably seated in said bights.

2. A draft diverter according to claim 1, and wherein means are provided for securing said doubled lower ends of said inner flanges together to close said bights and retain said anchors therein,

3. A draft diverter according to claim 2, where- :in said last-named means is operative to secure said doubled lower ends of said inner flanges to the lowermost of said diverter inner sections.

4. A draft diverter according to claim 3, wherein said webs of said spacers have lengths corresponding to those of said outer flanges.

5. In a draft diverter for seating atop a chimney, the combination with at least two tubular diverter inner sections arranged in axially spaced and aligned relation, the uppermost inner section having a closed upper end provid- 'ing a cap, and at least one tubular diverter outer section surrounding said inner sections in outwardly spaced concentric relation so as to 'span the space between said inner sections and overlap the adjacent ends thereof; of a plurality of spacers for connecting all of said sections together in said spaced relation aforesaid, said spacers being substantially identical, each 'spacer including aligned upper and lower ends and a radially outwardly offset central portion,

each central portion being not longer than the length of said outer section and being secured to the inner periphery thereof, said upper and lower ends of said spacers being secured to the outer peripheries of said inner sections, said lower ends of said spacers being doubled on themselves to provide bights, and guy anchors seated in said bights.

6. A draft diverter according to claim 5, wherein means are provided for securing said doubled lower ends of said spacers together to close said bights and retain said guy anchors therein.

7. A draft diverter according to claim 6, and wherein said last-named means is also secured to the lowermost of said diverter inner sections.

8. In a draft diverter for seating atop a chimney, the combination with at least two tubular diverter inner sections arranged in axially spaced and aligned relation, the uppermost inner section having a closed upper end providing a cap, and at least one tubular diverter outer section surrounding said inner sections in outwardly spaced concentric relation so as to span the space between said inner sections and overlap the adjacent ends thereof; of a plurality of spacers for connecting all of said sections together in said spaced relation aforesaid, said spacers being substantially identical and comprising inner and outer flanges connected by a web, said outer flanges each having a length not greater than that of said outer section and being fixed to the inner periphery thereof, said inner flanges being substantially longer than said outer flanges and having upper and lower ends extending above and below said outer section, portions of each inner flange being fixed to the outer peripheries of both inner sections, said lower ends of said inner flanges being doubled on themselves to provide bights, guy anchors seated in said bights, and means securing said doubled lower ends of said inner flanges together and to the lowermost of said diverter inner sections to close said bights and retain said anchors therein.

9. In a draft diverter for seating atop a chimney, the combination with at least two tubular diverter inner sections arranged in axially spaced and aligned relation, the uppermost inner section having a closed upper end providing a cap, and at least one tubular diverter outer section surrounding said inner sections in outwardly spaced concentric relation so as to span the space separating said inner sections and overlap th adjacent ends thereof; of a plurality of spacers for connecting all of said sections together in said spaced relation, said spacers each comprising an inner and an outer flange connected by a web, said outer flanges each having a length not greater than that of said outer section and being fixed to the inner periphery thereof, said inner flanges being longer than said outer flanges and having lower ends extending below said outer section, portions of each inner flange being fixed to the outer peripheries of both inner sections, guy anchors for said diverter, and said lower ends of said inner flanges being formed to provide means for attaching said guy anchors thereto.

BUCKLEY R. REED.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 567,775 Watson Sept. 15, 1896 1,570,441 Jardine Jan. 19, 1926 2,039,484 Heppenstall May 5, 1936 2,437,771 Wait Mar. 16, 1948 2,470,623 Kice May 17, 1949 FOREIGN PATENTS Number Country Date 650,161 France Sept. 17, 1928