US1231627A - Ventilator-head. - Google Patents

Description

T. LEE.

VENTILATOR HEAD. APPLICATION FILED 0CT.5.1916.

Patented July 3, 1917.

THOMAS LEE, 0]? CINCINNATI, OHIO.

VENTILATOR-HEAD.

Specification of Letters Patent.

Patented July a, rare.

Application filed October 5, 1916. Serial No. 123,964.

To all whom it may concern:

Be it known that I, THOMAS LEE, residing at Cincinnati, Hamilton county, State of Ohio, have invented certain new and useful Improvements in Ventilator-Heads, of which the following is a clear, full, and exact description, attention being called to the drawing which accompanies this application and forms a part thereof.

This invention concerns ventilators of the kind used for carrying off bad air, smoke, etc., from the interior of buildings,'etc.

They usually terminate above the roofs of these structures where ahead is provided which has an outlet opening by which communication with the open air is effected in a manner preventing at the same time en trance of rain and snow.

The invention relates more particularly to a type of ventilators in whichthis head has a lateral outlet which is contained in a hood or cowl rotatably mounted and which is provided with a vane adapted to be acted upon by the wind whereby the hood is automatically adjusted to position the outlet with reference to the direction of the wind justable devices like dampers, shutters or flaps also known as louvers to control passage through it and if desirable to close'it altogether.

My invention involves the means for ma nipulating these adjustable controlling devices and it consists of these means and of their construction as hereinafter described and claimed and as illustrated in the accompanying drawing in which:

Figure 1. is acentral vertical section throughthe ventilator-head taken so as'to pass through the outlet opening thereof.

Fig.2. is a rear-view of the same with parts broken away.

Fig. 3. is a horizontal section taken on line 33 of Figl'l.

In the drawing letter A indicates the cylindrical neck which is the lower or stationary part of the ventilator-head and whereby the same is secured in position either directly upon'a roof, orenpon the inclosed spaces,

Epper end of a ventilator shaft, stack or Bindicates the hood or cowl which is the upper or adjustable part of thehead. It has a depending collar 7 whereby it is closely fitted around the outside of the upper part of the neck on which the head is so mounted that it may freely rotate thereon.

A post 8 forms the center of rotation and is aiiixed within the head coincident with the axis of collar 7 and also coincident with the axis of neck A into which it extends.

Post 8 is held to its central position in the hood by any-suitable means as for instance bytwo bearings formed in bars 9 and 11 vertically spaced and connected within the interior of the hood at right angles to each other. The post is held to these bars by. any meansas for instance by nuts 1212 at its upper end.

It is centered in the neck preferably in a similar manner and by two bearings also contained in two vertically spaced bars 13 and 14L connected at their ends within the interior of the neck.

The weight of the hood is carried by a stirrup formed by a bar '15 attached to bar 14 with aspace between the two and upon which stirrup the'lower end of center-post 8 rests. It is also held positively to the neck by any suitable means as for instance,

by a pin 16. By preference a hard, wearresisting substance, like glass 17 is interposed to protect the stirrup by taking up the contactwith the lower end of post 8.

Above its lower cylindricalpart the hood assumes the form of' an elbow and terminates ina vertical plane beyond-its-collar 7 .where it is open laterally and thereby forms the outlet opening 18 of the ventilator-head.

The cylindrical form may be retained around the turn and to the outlet or it may merge into the form of a prism and terminate" with a'four-sided outlet as shown.

Above the center of the outlet opening there is a vane 19 susceptible to the action of the wind and whereby the position of the hood is controlled to maintain the outlet opening in the lee of thewind for reasons times also called louvers, and supported across the outlet opening by preference horizontally and parallel to each other.

Their support is in the nature of a hinged.

connection at their ends, the pivotal centers of the connections being all alined, so that said flaps may also be alined with each other, and being of a width so that one flap with its free edge may slightly lap the adjacent flap, the outlet opening may thus be completely closed when the flaps are so alined and as shown in Fig. 1.

From this position they may be adjusted to any degree of opening until the limit is reached when they assume a position as shown in dotted lines in same figure when the outlet is fully open.

For the purpose of so moving these flaps they are all connected to a shifter-rod 21 by means of links 22, so that when said shifterrod is moved all flaps are simultaneously affected. 7 V

For so moving the shifter-rod I use a lever 23 fulcrumed in any suitable manner as for instance, by supporting it on bar 11.

At its upper end it is connected to the shifter-rod and its lower end extends into neck A.

The flaps by reason of their weight and the weight of the connected parts, (22 and 21) have a normal tendency to occupy a closed position as shown in Fig. 1. They are opened by action upon the lower end of lever 23 by means of a sliding follower 24 mounted on post 8 and in turn acted upon by a lever 25, supported in any suitable manner as for instance by means of bar 13.

This latter lever is conveniently manipulated from below by apull device, chain or rod 26, extended downwardly within accessible reach and it will be observed that the manipulation is efi'ective at any time and in any position which hood B may occupy in view of its automatic rotary adjustment on neck A. This is by reason of the interposition of follower 24 which permits lever 23 tomove around with the hood while remaining always subject to the action of lever 25. Observe Fig. 8. v

That part of levers 23 and 25 which engages follower 24 is bifurcated as shown and engages the follower on each side of the center-post, on which the follower slides so as to insure an even movement.

After the flaps have been opened it is necessary to hold them so which is done by suitable locking means. I prefer to apply these means to the pull device which for such purpose, in part at least, consists of a rod as shown.

These locking means consist of a locking lever 27 pivotally supported at one endand provided with an opening through which rod 26 passes. This opening is somewhat larger than the diameter of rod 26 so that a spring 28 below it may tilt it as shown in -Fig. 2, in which position it binds on rod locking lever 27 down to release rod 26 for manipulation until adjustment of the flaps has been accomplished. 1

The proper position for lever 27 at that time is determined by a stop 31. against which it is held. See dotted lines in Fig. 2.

This manipulation of rod 26 is always by a pull and it is always in proper position for such purpose because its preceding release always leaves it in its high position.

Having described my invention I claim as new:

1. A ventilator-head comprising a stationary part, a hood mounted thereon for rotation and provided with an outlet opening for the head, adjustable controlling devices for this opening, an adjusting lever mounted in the hood and connected to these controlling devices, a manipulating lever mounted in the stationary part below the hood, means to transmit the action of the manipulating lever to the adjusting lever and a pull-device on'the manipulating lever to actuate the same. p

2. A ventilator-head comprising a stationary part, a post supported thereon, a hood carried on said post which forms the center of its rotation, an outlet in said hood,

controlling means for this outlet, a lever pivoted in this hood for adjusting these controlling means, a manipulating lever pivoted in the stationary part and a transmission device slidably' supported on the post intermediate the two levers and adapted to transmit the actuation of the manipulating lever to the adjusting lever.

3. In a ventilator-head having an outlet opening, the combination of flaps for controlling this opening which are adjustably supported to normally move into one of their extreme positions, means whereby they are connected for simultaneous move- '130 ment, a lever operatively connected to these lever in a tilted position and imparting to means and adapted to actuate them for the it a normal tendency to grip the rod menpurpose of adjusting these flaps to other potioned and means to temporarily disengage l0 sitions, a pull device Which comprises a rod the locking lever to release said rod.

f to manipulate this lever, a locking lever In testimony whereof I hereunto aflix adapted to engage the rod of this pull-demy signature. vice a spring tending to hold this locking THOMAS LEE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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