US1738210A - Device for increasing buoyancy - Google Patents

Description

Dec. 3, 1929. F. G. sARGENT 1,738,210

DEVICE FOR INCREASING BUOYANCY Filed Sept. 21, 1928 Patented Dec. 3, 1929 UNITED STATES FREDERICK G. SARGENT, F WESTFORD, MASSACHUSETTS DEVICE FOR INCREASING BUOYANCY Application filed September 21, .1928.` Serial No. 307,402.

This invention relates to a device for increasing the buoyancy of a machine or the like, particularly for the purpose of assisting in the raising of an aeronautical machine or 5 raising it straight up in the air.

The principal objects of the invention are to provide a power driven device which will create a partial vacuum in such a place that the device will tend to rise and also create in a re-action which will further assist in its rising in the air; to provide the device with a recess in which the suction may be created g and to provide as a part thereof a fan in which there will be no loss of air between the is blades and the casing and which will be particularly eflicient for creating air currents downward to help in lifting the device and can be made strong and durable.

Other objects and advantages of the in an vention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a diametrical sectional view of a preferred embodiment of the invention; and

25 Fig. 2 is a sectional view on the line 2-2 of Fig. 1.

In this form the device comprises a casing having an air inlet 11 at the top provided with a regulating damper 12 and a recess 123 3o in the bottom which has no inlet. This recess is located in a hub 14 into which a driving shaft 15 extends.

The fan arrangement consists of a series of curved blades 16 fixed to the casing and to a :225 hub 19 and located in the horizontal part of the chamber withinit and also a series of inclined blades 17 located in an annular downwardly extending outlet 18.

When the shaft 15 is turned in the proper direction, the casing will be rotated as a whole and currents of air will be caused to come into the inlet 11 through the fans and` ont through the outlet 18 which extends all the way around it. Furthermore, a suction will be set up in the space 13 reducing the air pressure on that area so that the atmospheric air pressure on the bottom of the hub will be unbalanced and will tend to raise the device in the air. Of course the air currents coming down through the outlet 18 all around form a powerful means for raising the device` straight upwardly in the air by reaction.

By `having the fan blades all fixed to the casing and rotating the casing itself, the loss of air pressure in the spaces between the blades and the casing, where the blades rotate therein, is `entirely avoided. Further-I more, the parts are firmly secured together and are not likely to get out of order under heavy usage. v

In this way it will be seen that I have providedfor taking advantage oftwo methods of elevation, and that they do not conflict with each other but co-operate to raise the machine to which this is attached directly upwardly in the air.

Although I have illustrated and described only one form of the invention I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to all the details of construction herein shown and described, but what I do claim is 5 1. In a device for the purpose described, the combination of a rigid casing havingl a horizontal part provided with a central. inlet eX- tending upwardly and an annular vertically downwardly extending outlet around the o sides, at the bottom, said casing being rotatable on its own vertical axis and a series of fan blades mounted in stationary position in the horizontal part of the casing 'and tending to direct currents of air down through the inlet, through the casing, and directly downwardly through the outlet to tend to lift said casing.

2. In a device for the purpose described, the combination of a rigid casing having a horizontal part provided with an inlet ei:- tending upwardly and an annular downwardly extending outlet at the sides, a series of Y fan blades mounted in stationary position in the casing and tending to direct currents of air down through the inlet, through the casing, and directly downwardly through the outlet and a recess in the bottom of the casing at the center which the rotation of the device will tend to exhaust,thus providing uw balanced pressure at that point and causing the atmospheric pressure on the bottom to assist in raising it.

3. In a device for the purpose described,V the combination with a casing and fan blades securelyvmounted therein, and an outlet from the casing-'extend'i rigtdg'rcctlydownvvard-fromV 'w the bottomrf all around thecircumference,"

whereby the rotation of the casing Will tend to raise the devicefvof ymeansfor}rotatin,f;fthe:-

casing, and a recess inthe bott'o1n`of`the casing at the center Which'therotation:ofthe device will tend to exhaust, thus providing unbalanced pressure at-thatpointfand causi ing the atmospheric pressure on the bot-tom toffas'sist irrraisin'git 4. Inf afdevicegfor thepurpose describedQthe v combination ofVv a` rigid rotatabjle casing hav- -in'gxahorizontal partprovided'with 'a1-central 1 'inleteztendingupwardiy'and anannular lverl'v ticallyl'doyvnwardlyf'extending v"outlet: at'th'e 7 sides; and-'a seriesfof fanf-bl-ades mounted in ystationary position in-the horizontalpart of thev rcasing -and Itendinglto yinduce currents of air through the inlet, through thecasing;

and 1'di'rect1y into the outlet,4 anda vseries of fan blades located in saidoutletf'sothatwhen the casing is rotatedvbothwsets of blades will produce air currents 'liuto'l` and*` through the outlet In testimony whereof I` have hereunto at-v xed'my'sign'atureuf Fruairnianrc'irI :Gs -sA-RGENT.

Images