US 1568946 A
Description (OCR text may contain errors)
'Jan. 5 ,1926.
A. GENERICH 51.301316 FAN BLADE.
156mm I Filed Jan. 7, 1925 anomlioz Generic h Patented Jan. 5, 1925.
UNITED STATES PATENT OFFICE.
ARNOLD GENERICH, OF NEW YORK, N. Y., ASSIGNOR TO ABRAHAM IBEBEL, OF NEW i YORK, N. Y.
Application filed January 7, 1925. Serial No. 954.
To. all whom it may concern:
Be it known that I, AnNoLn GnNnnIoH, a citizen of Germany, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Electric-Fan- Blades, of which the following is a specification.
This invention relates to improvements in fans and particularly tosuch as are power driven to produce a current of air.
One of the objects of the invention is to provide a fan having in addition to the usual radially disposed vanes, a series of longitudinal blades arranged-tangentially to the radial vanes, whereby the fan is rendered more effective; Another purpose is to produce a fan havmg a series of radial vanes and another series of blades disposed in conical formation,
. their base ends being beyond the tipsfof the raidal vanes and converging towards their opposite lower ends, whereby an air current is diverted angularly downward in an effective manner.
These and other like objects are attained by the novel construction, combination and arrangement of partshereinafter described and shown in the accompanying drawing, forming a material and in which Figure 1 is a side elevational view of a fan made in accordance with the invention.
Figure 2 is aplan and transverse sectional view looking from line 2-2 of Figure 1.
In the drawing, Figures 1 and 2 show a ceiling supportedfan in which the numeral 5 designates the ceiling and 6 a bracket at tached to the lower side, a spindle 7 passing through the bracket andceiling as shown.
Secured to the spindle 7v is a drive pulley 8 actuated by a belt 9 and attached to the lower extending end of the spindle is a sleeve 10 carrying the fan elements.
On the upper partof the sleeve 10 is fixed a hub 11 from which extend pairs of oppositely disposed blades 12, the same being of the usual paddle-shaped type and twisted helically in such direction as to force the air downward or away from the ceiling. Attached to the ends of the blades 12 is a ring13 having secured on its periphery the upper ends of a plurality of vanes 14 which converge at their lower ends and are at part of this disclosure,.
than the first name tached to a ring 15 having arms 16 radiating from acommon center in which the lower end of the sleeve 10 is fixed.
The vanes 14 are composed essentially of flat plates, arranged tangentially of the ring 13, reduced in width as they approach the ring 15, and are curved to present outer concave surfaces, the point of attachment being at their advance edges only. The efiect of the associated blades fans is to deliver a current of air over a widely disposed area and at an angle downward, the current being dilfused rather than concentrated.
()bviously minor changes may well be made 7 in the structure presented without departing from the scope of the appended claims.
Having thusdescribed my invention, what and y I claim as new and desire to secure by 7 Letters Patent, is
1. A power driven rotary fan having a plurality of radial paddle shaped blades, :1 ring or rings at the extremities of the blades, a plurality of arcuately curved longitudinal vanes fixed to the ring or rings, said vanes being attached at their curved advancing edges and disposed tangentially and co r vergingly at their ends, and a pendantly supported shaft connected to their converging ends.
2. A fan having a vertical shaft,'one or more sets of radial paddle shaped blades rotatably mounted thereon, rings connecting the extremities of each set of blades, convexly curved longitudinal vanes secured tangentially to the rings, and connections between said vanes at points remote from the radial blades. A
3. A fan comprising a pendantly supported vertical spindle, a driving means therefor, a sleeve secured to said spindle, a plurality of radial paddle-shaped fan blades fixed on said sleeve, a ring fixed at the ends of said blades, a ring having inreaching arms fixed at the extremity of said sleeve, said last named ring being of lesser diameter tangential vanes secured at their advance edges to said rings, said vanes being curved outwardly. towards their free edges.
In witness whereof I have afiixed my nature.
ARNOLD GENERICH. 1
ring, and a plurality of