US540999A

US540999A - Electrically-driven fan

Info

Publication number: US540999A
Authority: US
Publication date: 1895-06-11
Anticipated expiration: 1912-06-11

Description

' air is thrown in one direction andwithin a tor may be used which can be'driven with the a vertical elevation of my improved electric .double fan.

vertical shafts the air issim Fries.

HENRY e. MORRIS, or PHILADELPHIA, 'PanNsYLfvANnl.`

ELscrarcaLtY-naiven FAN.

sncrFIcATIoN formingpart of Letterspratent No. 540,999, dated June 11,1595. Application nea February s, isst. sean no. 499,661'.- tnamoaaa i 'l To' @ZZ whom/ it may conservi.'

Be it known that I, HENRY G. Monaten citizen of the United States, residing,Ir in'Philadelphia, Pennsylvania, have invented certain Improvements in Electrically- Driven Fansfef which the following is a specification.

The objectof my invention is to so construct a fan driven by an electric motor that circulation of airinaroom will be more evenly maintained and the air will be distributed from the fan from all points of its circumfer- .ence by centrifugal force. j

In the accompanying drawings, Figure l is fan, partly iu section, this view illustrating a Fig. 2 is a side view, and Fig. 3 illustrating a single fan. Fig. 4 is a diagram illustrating'the action of the fan 5 and Fig. 5 is a section on the a plan view,

line 5 5, Fig. d,

Electric fans as usually constructed are mounted on a horizontal axis anda blast of limited space and when fans-are mounted on ply disturbed by an ordinary bladed Eau and no distinct current is maintained, but by my invention I am enabled to form a distinct current of air to and from the fan at the same time distributing the air evenly throughout the room or apartment in which the fan is placed.

A is the base of the fan; B, the casing forming the iieldof` the electric motor.

Ddis a vertical shaft mounted on a step b and in bearings L.

D is the armature. d is the commutator.

It will be understood that any form of n10- shaft upright and I have simply shown one form of motor in the drawings.

Mounted in the upper end of the shaft D is the centrifugal fan E consisting, in the present instance, of the central plate E upon which are mounted the two sets of curved bladese e one set above and the other set be low the plate. Projecting above the` plate is a central cone e? and projecting below the plate is a similar cone esj Surrounding the upper portions of the blades e is a ring h and surrounding the lower portions of the blades e is a ring F this ring in the present instance room only vand throw it out by the centrifugal other ring inclosing a portion of each ofthe so that the act-ion'of the fan is to drawthe air into the center and throw itiout Toy-centrifugal 6o force throughout the entireleircumference ot' thefan,; as clearly indicated inlv the diagram, Fig. 4. A

A fan constructed asshown in Fig. 1, not only draws the air from the upper portion of the room and throws it out at the center,`but will also draw the air from the lower portion of the roomand tLrowit out at the center, causing the complete ciculationof the air.

In Fig. v2, I'have shown a single fan, that is,Av a fan only using the upper blades e and the upper cone e2, the aetionof this fan being to draw the air'from the upper portion of the action of the fan.

It will thusbe seen that if a number of persons are sittingat a table 'for instance 'each person will derive some benefit from the fan,l whereas in a fan as ordinarily constructed the air is concentrated and thrown in one direction only. l

I lclaim as my invention- 1 The combination in an electrically operated fan, of a base, an' electric :motor thereon, a vertical driving shaft, a disk on said shaft, a 'series of* blades extending above and below the disk .at its periphery, a ring inclosing a portion of each of the lower blades, and an upper blades', said rings forming an annular space between them and the driven disk forming a deector, substantially as described.

2. The eombination in an electric fan,of the electric motor having a vertical shaft, a disk on said shaft, a series' oli blades on .the disk, a

tapered central hub, and a ring inclosing a portion of each blade and forming an annular space a; between it and the disk so that'the air will be drawn in at the center4 and d istributed by centrifugal force through the said space x, substantially as set forth. 3. The comhinationin an electric fan, of the motor, its vertical shaft, a disk mounted on lsaid shaft, curved blades on each sideof said secured together by 55 disk, taperedhubs projecting at, the center of In testimony whereof I have signed my the disk, a ruginciosng a portion of each of name to this specification in the presence of xo the upper; blades, another rngnclosng a two subscribing witnesses. portion of .each of the lower blades, said rings fforxning an an'nulaspace between them so HENRY G.- MORRIS.

thahthe airw'ill be drawn from each side of Witnesses:- the fan' and thrown out; from the fau by cen- EDWIN C. FREEMAN, tritugvaiferge, l:sv.1bi;itih.o tiaiy as described. WILLIALLA. BARR.