US1493724A - Ventilator - Google Patents

Description

2,493,724 6. W. BEBOUT VENTILATOR May 13 1924.

2 Sheets-Sheet 1 Filed Aug. 30. 1922 G. W. BEBOUT VENTILATOR Filed A112. 50. 1922 2 Sheets-Sheet 2 gu arr um GEORGE W. BEBOUT, or mom/1on1), VIRGI IA.

VENTILATO'R.

Application filed August 30, 1922. Serial No. 585,195.

To all whom it may concern.

Be it known that I, GEORGE W. Bueour, a citizen of the United States, residing at Richmond, in the county of Henrico and State of Virginia, have invented certain new and useful Improvements in Ventilators, of which the following is a specifica tion.

This invention relates to improvements in ventilators and more especially to a ventilator designed for use on vessels and boats of all descriptions and also upon houses or other building structures.

One of the primary objects of the present invention is to provide a ventilator in which the draft creating means is supported in a manner to permit of its free rotation,- a vane being provided in connection therewith so as to insure of the intake of the ventilator being at all times presented to the wind or inrushing air currents.

Another object of the invention is to provide a novel means for supporting the draft creating means for turning movement in the manner above stated and which supporting means will provide for entire freedom of rotative movement of the draft creating means for the purposes stated.

In the accompanying drawings:

Figure 1 is a side elevation of the ventilator embodying the invention;

Fig. 2 is a vertical transverse sectional view through the ventilator;

Fig. 3 is a horizontal sectional view taken substantially on the line 3-3 of Fig. 1;

Fig. 4 is a horizontal sectional view taken substantially on the line 44 of Fig. 2.

The ventilator embodying the invention comprises a draft creating device consisting in part of a cylindrical body 1 which is preferably open at both of its ends and which is provided with a downwardly projecting hollow cylindrical branch 2 communicating with the body at its lower side. Arranged within the body 1 is a Venturi tube 3 comprising an intake or velocity section 1 the major or intake end of which is arranged within one open end of the body 1 as best shown in Fig. 3 of the drawings. The outlet or expanding section of the Venturi tube is indicated by the numeral 5, and the two sections are, as usual, of frustoconical form and are united at their minor ends. It will now be evident that when the major or intake end of the velocity section 4: of the Venturi tube is presented to the wind or inrushing air currents, the air currents will pass through the section 4: with an increase in velocity and, expanding within and issuing from the section 5 of the Venturi tube, will create an upward draft through the extension 2 of said tube. In order to prevent rain and snow being driven into the rear end of the body 1 and entering the down branch 2 of the body, an annular bafiie 6 is arranged within the said body 1 at one side of the open upper end of the said branch 2 and surrounds the expansion section 5 of the Venturitube 3 in spaced relation to said section so as to provide a passageway 7 for the air .currents and yet prevent rain or snow, or cinders being blown through the body and into the down branch.

In order that the draft creating device above described may be supported for free rotative movement, an upright air conduit 8 is provided and this conduit is of cylindrical form and secured at its base 9 upon any convenient portion of the structure upon which the ventilator is to be installed. This conduit 8 is of the hollow cylindrical form shown in the drawings and the lower portion of the branch 2 is rotatably fitted onto the upper end of the conduit. The numeral 10 indicates a spider which is rigidly mounted in a horizontalposition in the lower portion of the conduit 8 and is provided axially with an opening 11 and in its upper surface and surrounding said opening with a seating recess 12. A ball race 13 is disposed within the recess 12 and surrounds the opening 11, and a spindle 14 is provided above its lower end with a circumscribing shoulder 15 and below said shoulder with a second shoulder 16, the portion of the spindle below the shoulder 16 and indicated by the numeral 17 being of cylindrical form as are also said shoulders 15 and 16. Below the portion 17 the spindle is threaded as at 18 to receive a nut 19. The portion 17 of the spindle is rotatably fitted within the opening 11 in the spider 10 and also through an opening 20 formed in the ball race 13. A similar race 21 is disposed above the race 13 and is of annular form and hence provided with an opening 22 which receives the cylindrical shoulder 16 of the spindle, the lower side of the shoulder 15 resting upon the upper side of said race 21. The nut 19 engages the underside of the central portion of the spider 10, and the spindle is thus restrained against longitudinal displacement Bearing balls 23 are arranged between the races 13 and 21 and serve the usual purpose of reducing friction. Near its upper end the spindle 1 1 is provided with a circumscribing shoulder 24 which engages the underside of the central portion of a spider 25 which is rigidly supported in horizontal position within the lower portion of the branch 2 of the body 1 immediately above the upper end of the conduit 8, the portion of the spindle above the shoulder extending through an opening 26 in said spider, and 'a nut 27 vbeing threaded on to the upper end of the spindle and being tightened to bear against the upper side of the said central portion of the spider.

At this point it will be evident that means is provided for supporting the draft creating device of the ventilator so that it may have free and unrestrained rotative movement, and in order that the device may be maintained in position with its intake presented toward the Wind or inrushing air currents, a vane 28 is fixed upon :the upper side of the body 1 and extends longitudinally thereof and is of the general form shown in Fig. 1 of the drawings, being gradually increased in height from the intakeend of the body to-the outlet end thereof.

Having thus described the invention, What is claimed as new is:

In a ventilator, a stationary air conduit, a draft creating means having an intake branch rotatably fitting the conduit, spiders Within the conduit and branch having vertically alined openings, the spider within the conduit being provided with a seat surrounding the opening therein, an annular disc fitted into the seat and having an annular ball race in its upper side, an annular disc disposed above the first mentioned disc and having a ball race in its under side, anti-friction balls interposed between the discs Within the races, a spindle having a shoulder adjacent its upper end and fitted at its said upper end through the opening in the spider 01" the intake branch, a nut threaded upon the upper end of the spindle and binding against the upper side oi the spider, the shoulder upon the spindle bearing against the under side oi the said spider, the lower end of the spindle fitting through the opening in the spider in the conduit and through the opening in the annular disc first mentioned and having an enlarged circumferential portion fitting rotatably in the opening in the second mentioned annular disc, the spindle having a shoulder extending about its circumference and resting upon the upper side of the last mentioned annular disc, and a nut threaded onto the lower end of the spindle and engaging the under side of the spider in the conduit.

In testimony whereof I afi'ix my signature.

GEORGE W. BEBOUT. 1,. s. 1

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