US1977934A

US1977934A - Rotary ventilator

Info

Publication number: US1977934A
Application number: US595623A
Authority: US
Inventors: Bolton Joseph
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-02-27
Filing date: 1932-02-27
Publication date: 1934-10-23
Anticipated expiration: 1951-10-23

Description

Oct. 23, 1934. J. BOLTON ROTARY VENTILATOR 2 Sheets-Sheet 1 Filed Feb. 2'7. 1932 )NVENTOR A 1: to 1-11. ej

0d. 23, 1934. J. BOLTON 1,977,934

ROTARY VENTILATOR Filed Feb. 27. 1932 2 Sheets-Sheet 2 IINVENTOR Q 5Q Jose lmoet A ttorney Patented Oct. 23, 19 34 BS FATE NT osF cE ROTARYVENTILATOR Joseph Bolton, Windsor, Ontario, Canada Application February 27. 1932,=Serial N0. 595,623 s Claims. (01. as-42) This invention relates to improvements in a rotary ventilator, its primar'ywobject being to provide a wind driven rotary ventilator having added means of suction inside the ventilator pipe thereby giving greater exhausting capacity.

A further object is to provide such. a ventilator" having nonfrictional bearings making the device very sensitive to the slightest movement of air' With these and other objects in view the invention consists in the novel construction and 151 arrangement of parts as hereinafter more specifically set forth, claimed and shown in the accompanying drawings and in which:-

Fig. 1 is a general exterior view of the improved rotary ventilator.

Fig. 2 is a sectional elevation through the same.

Fig. 3 is a plan view of a plate with a circular hole therein.

Fig. 4 is a rear view of the propeller vane and 25. suction blade.

Fig. 5 is a view looking straight at the vane as it will appear when assembled on the ventilator.

Fig. 6 is a diagrammatic view on the line 6-6 30; of Fig. 5 showing how the suction blades are secured in the seam of the vane.

Fig. 7 is a detailed sectional view showing the bearings and means of lubrication.

Fig. 8 is a sectional view on the line 8-8 of '35 Fig. 7.

Fig. 9 is a section taken on line 9-9 of Fig. 2. Referring more in detail to the drawings in which similar reference characters designate corresponding parts throughout the several views 40; it will be seen the invention comprises a sheet metal pipe 10 being the stationary base for the ventilator, a steel center non-rotatablerod or shaft 11 is centrally supported in the stationary base 10 by the brace members 12 and the g5; angularly disposed brace members 13 riveted thereto. Shaft sockets 14 are secured to the said brace structure which thus forms a rigid support and prevents any vibration of the shaft as the ventilator revolves about the same.

The revolving part of the ventilator comprises a circular metal band .15, a circular plate 16 having a centrally disposed circular. opening therein and a plurality of smaller orifices 17, symmetrically arranged around the center thereof,

.55 as more clearly shown in Fig. 3. The propeller vanes 18 are formed from strips of metal twisted longitudinally so that their upper ends lie flat on top of the plate 16, to which they are secured by rivets or other suitable means, and their lower ends arei'disposed substantially at right angles to'the band 15. The upper and lower portions of the inner edge of the vanes are angularly disposed to each other and the lower portion of the edge is bent to lie flat against theband 15.to which it is secured by rivets orother suitable means. The inner edge of the vanes is formed with a raised seam 19 bent back upon itself which acts. as a stop or gutter for rain or snow and secured in the seam are the

suction blades

20 and 21. The outer edge of the vanes is curved longitudinally having a bead 23 formed along the same and adjacent the bead is a groove 22 which improves the appearance or" the vanes and adds to their strength.

In Fig. 5 the lip 24 of the suction blade is shown bent at an angle the said lip cuts the air inside the ventilator as the said ventilator revolves and causes a suction. The

suction blades

20 and 21 are made in two sizes, the larger one 20' and the smaller one 21 and therefore revolve in a larger and smaller radius respectively about the axis. They are secured alternately large and small to the propeller vanes, and assist the said vanes to hold their form by being inserted in the raised seam 19 and soldered or riveted therein. A circular metal pipe 25 acts as a holder for the bearings 26 and. 27. Bearing member 26 comprises a ball socket 28 and a lubricant reservoir 29 with a small drip duct 30 therebetween and is secured into position in the pipe 25 by a rivet 31 which also secures the angle members 32 to the said pipe. The bearing 2'7 is secured in the pipe 25 by a screw 33. A steel ball 34 is positioned on the ball socket 28 between the top of the steel shaft 11 and a circular steel washer 35 having a small hole therein permitting the lubricant to pass from the drip duct 30 to the steel ball 34 and on down the shaft to the bearing 27. A drip cup 36 is secured to the shaft 11 below the pipe 25 and closes the lower end of same to exclude dust etc., from the bearings. This drip cup catches the superfluous lubricant which passes out, through a small drain pipe 37. A circular stop 38 secured on the shaft by a screw 39 prevents the ventilator from being removed from the top of the shaft.

A circular plate 40 having an orifice therein and a depending flange thereon is secured to the pipe 25. A number of small symmetrically spaced orifices are provided in the same. Light rectangular band irons 41 or steel wires, extend radially from the said orifices to corresponding orifices in the circular band 15 and from thence extend upwardly to connect to the previously mentioned orifices in the plate 16. These bands or wires 41 hold the band 15 at an even distance around the central shaft and keep the ventilator running true around the base 10, and also support the circular band 15 thus preventing any sagging of the ventilator vanes. 1

A conical shaped member 42 surmounts the ventilator forming a closure for the lubricant reservoir and adding to the artistical appearance of the ventilator. A small pipe 43 having a stop per for the same provides means of inserting lubricant in the reservoir 29.

It is believed that the construction and advantages of the structure shown may be apparent from the foregoing paragraphs taken in conjunction with the accompanying drawings without further detailed description.

While thepreferred embodiment of the invention has been disclosed it is understood that minor changes in the details of construction, combination and arrangement of co-operating elements may be resorted to within the scope of what is claimed without departing from the spirit of the invention.

I claim:

1. A rotary ventilator of the type described comprising a plurality of radially extending vanes, transversely and longitudinally curved, the rear longitudinal edges of the vanes being bent outwardly and then reversely to provide a fold, suction blades adapted to be secured in the fold of said vanes and project inwardly from the rear edges of the vanes, the free edges of said suction blades having an angularly bent lip, means supporting the upper ends of said vanes and means supporting the lower ends of said vanes.

} 3. A rotary ventilator comprising a circular metal base, a non-rotatable shaft rigidly secured in the center of said base and extending upwardly therefrom, a tubular casing rotatably mounted on said shaft having bearings at its upper and lower ends to receive said shaft, a circular metal band, radial members securing said band to said casing, a circular plate mounted on the upper end of said casing, propeller vanes secured to said circular band and said circular plate and extending radially therefrom, said vanes being transversely and longitudinally curved, the rear longitudinal edges of the vanes being bent outwardly and then reversely to provide a fold and suction blades adapted to be secured in the folds of said vanes and project inwardly from the rear edges of said vanes.

JOSEPH BOLTON.