US1072189A

US1072189A - Rotary fan.

Info

Publication number: US1072189A
Application number: US65513711A
Authority: US
Inventors: William Sparks
Original assignee: Sparks Withington Co
Current assignee: Sparks Withington Co
Priority date: 1911-10-17
Filing date: 1911-10-17
Publication date: 1913-09-02
Anticipated expiration: 1930-09-02

Description

W. SPARKS.

' ROTARY FAN. PPLIOATION FILED 001217, 191

Patented Sept. 2, 1913.

, {entree snares PATENT WiLLIAM SPARKS, or Manson, MICHIGAN, ASSIGNOR no me srs iaxsrwxwnmo'ron COMPANY, or .mcxson, MICHIGAN, A connona'rion on salesman.

ROTARY rein Specification of Letters rates-t.

Application filed October 17, 1911. Serial N0. 655,187.

.- more particularly with the gas engines of automobiles for circulating air around and cooling the cylinders. When used in this relation they are necessarily placed in the small space between the engine and grill work or radiators in the end of, the hood and owing to the factthat they are driven, at high speed and together with the adjacent parts of the/machine are subjected to more or less severe vibration due to the jolt-- ing of the machine in passing over uneven roads, the fan is liable to contact with the radiator or other parts of the machine and thereby damage or destroy one or the other of the contacting parts. 7

My object, therefore, is to provide a onepiece sheet metalfan with a rim in which all portions of the blades are within the planes of opposite sides or edges of the rim so that the rim' will act as a fender to protect the blades against contact with adjacent objects.

Another object is to utilize portions of the, rim for bracing the otherwise unattached portions of the blades and. thereby maintaining these portions of the blades at their adjusted angles against deflection by impact with the air, thus increasing the efficiency of the fan and further reducing liability to injury.

Other objects and uses will be brought out in the following description.

In the drawings Figures 1 and 2 are oppo-.

site face views of my improved fan. Figs. 3 and 4 are respectively an edge view partly broken away and a sectional view of thesame fan the latter being taken on line 4-4,

Fig. 2.

This fan preferably consists of a one-piece sheet metal plate circular in form and having its marginal edge deflected laterally at substantially right angles to the main body '-1- for forming an annular flange 2- These blades are formed by portions of the plate. at '-HI,1d. then shearing the plate circumferentially from Patented Sept. 2, 191a.

.flection of the outer ends of the blades 13-." utt ng away be same side of each of the openings close to the rim or annular flange across the greater portion of the wid h 0 the blade, leaving the outer end of the blade v integrally united by a comparatively nar-' row neck .--5-- to the rim, while the inner ends of the blades are connected by a continuous central web 6 having a central -0 emng I for receiving a shaft, hub, or

0 her support upon which the fan may be mounted for rotary movement. The greater portions of the outerends of the blades are therefore separated from the rimby +8-, thereby allowing these portions of the blades to be deflected or bent laterally slits:

from one side to a point in proximity to the I opposite side of the rim as shown more these portionsofthe blades which are other wise unsupport'edagainst lateral vibration or deflection by impact with the air during rotation of the fan, said indentations being shown more clearly in Fig.2. These blades elearly in Figs. 3 and 4, the point's of the close proximit to the inner face of said ,rim.

are of uniform shape and size, preferably tapering and of greater area than the intervening spaces and are spaced equidistant apart circumferentially with their wider ends adjacent. the rim and all portions thereof wholly within the planes of the opposite sides of the rim so that when the fan is in operation, the rim serves as a fenderto prevent, contact of the blades with ad acent portions of the machine or other objects.

\Vhat I claim is: I 1; A fan consisting of a one-piece sheet metal circular plate having its marginal edge bent laterally at substantially right angles thereto for forming a guard flange,

the main body of the plate having portions thereof cut away to form a series of blades and intervening openings, the openings being of less radial length than the radius of the fan, leaving a central web uniting the v of suflicient width to cover the lateral deinner ends of. the blades, the outer ends of 80 or stamped inwardly at -9 into contact with the points of the blades to brace and hold the blades being separated from. the rim by rim.

slits extending in the same direction from the openings at one edge to a point in proxiinity to the opposite edge of the blades, leaving relatively narrow webs uniting the outer ends of the blades to the rim, the portionsof the outer edges of the blades which are separated by the slits from the rim being deflected laterally and means for connecting the deflected portion of the blades to the 2. A fan consisting of a one-piece sheet metal circular plate having its marginal edge bent laterally at substantially right angles thereto for forming a guard flange, the main body of the plate having portions i-llGIEOf cutaway to form a series of blades and intervening openings, the openings being of less radial length than the radius of the fan, leaving a central web uniting the inner ends of the blades, the outer ends of the blades being separated from the rim by slits extending inthe same direction from -,the openings at one edge to a point in proximity, to the opposite edge of the blades, leaving relatively narrow webs uniting the outer ends of the blades-to the rim, the portions of the outer edges of the blades which are separated by the slits from the rim being deflected laterally to points in close proximity to the opposite edge of the rim',

said rim having portions thereof depressed inwardly against the points of the blades.

3. A fan comprising a sheet metal plate and a laterally extending rim therefor, a series of radially extending blades formed from said plate and a portion of each blade attached to the rim, the portion of each blade unattached to the rim being deflected laterally, and means for connecting the de' flected portion of said blade to. the adjacent portion of the rim. t

4. A fan consisting of-a one-piece, sheet metal circular plate having its marginal edge bent laterally at substantially rightangles thereto for forming a guard flange, the main body of the plate cut to form a series of blades of less radial length than the radius of the fan,leaving a central web,

portions of the outer 'ends of the blades beiing separated fromthe rim by slits of less length than the width of the-blade, leaving a relatively narrow web uniting theouter ends of the blades to the rim, the portion of the blades separated from the rim by slits 5 being deflected laterally, and means for connecting the deflected portions of the blades to the rim.

5. A fan consisting of a one-piece, sheet edge bent laterally at substantially right angles thereto for forming a guard flange, themain body of the plate cut to form a I series of blades of less radial length than portions of the outer-ends-of the blades being separated from the rim by slits of less length that. the width of the blade, leaving a relatively narrow web uniting the outer ends of the blades to the rim, the portion of the blades separated from'the rim by slits beingdeflected laterally, and means in connection with the rim for supporting the-deflected portions of the blades.

my hand on this ninth day of October, 1911; \VILLIAM SPARKS.

Vitnesses: T

LILLIAX Vnrnanmcn F. G. VVHITIINGTON. I

metal circular plate having its marginal the radius of the fan, leavinga central web, p

In witness whereof I have-hereunto set v