US1087296A - Ventilator. - Google Patents

Description

W-, R. JOHNSON.

VBNTILATOR.

APPLICATION FILED FEB 18, 1911.

Patented Feb. 17, 1914.

1 Z% Z% Z i 4% v f fig 3 1 1 y 5 a 7 Z 32 p /5 1 i. 5y 4 Jr w [J i Q J j m l5 fl Z2 3 Inventor V I I Wit esss Attorneys WILLIAM R. JOHNSON, OF NEW DECATUR, ALABAMA.

VENTILATOR.

To all whom it may concern Be it known that 1, WILLIAM R. Jorrnson, a citizen of the United States, residing at New Decatur, in the county of Morgan and State of Alabama, have invented a new and useful Ventilator, of which the following is a specification.

This invention relates to ventilators for skylights.

The objects of the invention are to improve and simplify the construction of such devices as well as to increase their fireproof and water-tight qualities and to adapt them to receive interchangeable tops, whereby they may be equipped with either glass or metal tops.

Further objects of the invention are to provide simple and convenient means for opening and closing the ventilator and for holding it in open position in such manner as to cause it to close automatically in case of fire.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawing forming part of this specification, Figure 1 is a vertical central section through a ventilator constructed in accordance with the present invention; Fig. 2 is an under plan view of the lowermost bridge piece in Fig. 1, showing the key-hole slot which cooperates with the chain for holding the damper of the ventilator in open position; Fig. 3 is a section on the line 83 of Fig. 1, showing the cross sectional shape of the bridge piece illustrated in Fig. 2; Fig. 1 is a detail view in vertical section showing on an enlarged scale the upper left-hand portion of the ventilator shown in Fig. 1, and showing the use of a flat, transparent or glass top; Fig. 5 is a view similar to Fig. l, showing the flat, transparent top piece removed and a metallic cone shaped top piece inserted in place thereof.

Like reference numerals indicate corresponding parts in the different figures of the drawing.

The ventilator of the present invention is Specification of Letters Patent.

Application filed February 18, 1911.

Patented Feb. 1?, 1914.

Serial No. 609,421.

constructed with a stem 1, which is preferably in the form of a vertically extending cylinder. Extending transversely across the stem 1 is a lower bridge piece 2 and an upper bridge piece 3. Each of the bridge pieces 2 and 3 is in the cross sectional form of a channel iron or brace as shown in Fig. 3 of the drawing. Each of the bridge pieces 2 and 3 is secured to the stem 1 by means of downwardly extending integral flanges 4 formed at the ends of said bridge pieces, said flanges being riveted or otherwise secured to the inner walls of the stem 1, as indicated at 5. The lower bridge piece 2 is formed with a central circular opening 6, a chain opening 7 and a key-hole slot 8. The upper bridge piece 3 is formed with an opening 9' directly above the opening 6, said alined openings 6 and 9 serving slidably to receive a supporting rod 10 having at its upper end a spider arranged in plan view like an equilateral or Maltese cross, indicated by the numeral 11, the arms of said spider having secured to their outer ends a circular rim 12. Resting upon the spider 11 is a circular plate 12 of glass or other transparent or opaque material which is held in place by means of a flange 13 formed on the rim member 14.- which is riveted to the rim 12, and is provided at its lower end with a downwardly and outwardly flaring flange 15 which, when the damper 12 is in lowered or closed position, rests upon the upper edge of a louver 16 which is secured in any suitable manner to the stem 1. The flaring flange 15 of the transparent damper 12 when the damper is in closed position, fits on the outside of the upper edge of the stem 1 so as to make a water-tight closure, adapted to shed water onto the louver 16.

This water-tight construction is of impor-' tance in case any rain or moisture leaks or beats inside the ventilator. The damper 12 thus possesses advantages over the usual sliding sleeve which is employed for closing the ventilator and which slides on the inside of the stem 1 so that if any moisture beats against the outer surface of said sleeve when raised to the position which it occupies in closing the ventilator, such moisture will be free to trickle down inside the stem 1.

The supporting rod 10 for the damper 12 has secured to its lower end a supporting chain 17 provided with a link 18 formed of any suitable fusible material intended to melt in case of fire, so as to permit the automatic closing of the ventilator. The chain 17 extends upwardly through the chain receiving opening 7 of the lower bridge piece 2, then around a pulley 19 supported by the upper bridge piece 3, and then downward through the key-hole slot 8 in the lower bridge piece 2, said chain 17 being provided at its lower end with a ring 20. In opening the damper 12, the ring 20 is pulled downward, and by inserting one of the links of the chain into the small end of the key-hole slot 8, the damper 12 can be held in raised position.

The lower louver 16 is formed with openings 21 through which project outwardly and upwardly extending supports 22 which are formed of narrow flat metal bars and are secured at their lower ends to the outer surface of the stem 1, as indicated at 23. About midway of their length the supports 22 have secured thereto, as indicated at 24, outwardly extending arms 25 having their ends 26 bent upwardly and secured at 27 to a corrugated rim 28 which serves to break the force of wind and rain. An intermediate louver 29 is secured at its lower edge in any suitable manner, as indicated at 30, to the outwardly extending arms 25 and at its upper edge, as indicated at 31, to the supports 22.

The upper ends of the supports 22 are downwardly and outwardly bent, as indicated at 32, and have secured thereto, at 33, an upper louver 34, the lower edge of which is corrugated, as indicated at 35. At its upper edge, the louver 34 is formed with an upwardly directed cylindrical extension 36 which is preferably integral with the louver 34. The top 37 in Figs. 1 and 4 is formed of wired glass and rests upon a top support 38 in the form of a cylindrical member having an outwardly directed annular flange 39 at its upper end which bears against the lower periphery of the top 37. A clamping part 40 which is channeled shape in cross section and has its flanged ends 41 detachably secured together by means such as the bolt 42, serves to secure the top 37 in position in such manner that it may be readily removed and replaced by a metal top 43, preferably of the shape illustrated in Fig. 5 of the drawing.

The top support 38 at its lower end is provided with an inwardly extending annular flange 44 which is formed with a plurality of weep holes 45. The inwardly extending flange 44 is disposed below the upper edge of the cylindrical member 36 of the louver 34. At its inner edge the flange 44 is provided with a downwardly extending cylindrical flange 46 which is riveted or otherwise suitably secured to the cylindrical extension 36 of the louver 34. The cover support 38 in connection with the flange 44 and the tubular extension 36 serves to produce a gutter which is adapted to receive water of condensation deposited on the inner walls of the ventilator, said water of condensation being permitted to drain off through the weep holes 45 in the flange 44.

By reason of the fact that the ventilator opening through the stem 1 and the cylindrical extension 36 is closed by two thicknesses of heavy wired glass, as indicated at 12 and 37, it is apparent that in case of fire both of these glass plates must be broken through before the flames have a direct unretarded outlet.

Other advantages of the invention are obvious from the foregoing description in connection with the drawing.

What is claimed is:

1. A ventilator comprising a stem, upper and lower bridge pieces therein, the lower bridge piece having a chain opening and a key-hole slot therein, a supporting rod slidably extending through said bridge piece, a damper at the upper end of said rod, a pulley on the upper bridge piece, and a chain connected with said rod and extending upward through said chain hole, around said pulley, and then through said key-hole slot. 7

2. A ventilator comprising a stem, upper and lower channel shaped bridge pieces therein, the lower bridge piece having a chain opening and a key-hole slot therein, a supporting rod slidably extending through said bridge pieces, a damper at the upper end of said rod, a pulley on the upper bridge piece, and a chain connected with said rod and extending upward through said chain hole, around said pulley, and then through said key-hole slot.

3. A ventilator comprising a louver having a cylindrical upward extension at its inner edge, a cylindrical top support spaced from said extension and having at its lower edge an inwardly extending flange provided with weep holes, said flange having at its inner edge a depending flange secured to the extension of said louver, and a top carried by said top support.

4. A ventilator comprising a louver having a cylindrical upward extension at its inner edge, a cylindrical top support spaced from said extension and having at its lower edge an inwardly extending horizontal flange provided with weep holes, said flange having at its inner edge a depending flange WILLIAM R. JOHNSON.

is connected to said damper actuating rod, the lower of said transverse supports forming a guide for said chain, a chain support carried by the upper of said trans- 5 versely disposed supports, and chain lock- Witnesses:

ing means carried by the lower of said trans- F. A. BLooDWoRTH,

versely disposed supports. E. E. GRAVES.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of latents, Washington, D. G.

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