US1278852A - Suction appliance. - Google Patents

Description

Patented Sept. 17,1918

F. M. CASE.

SUCTION APPLIANCE. APPLICATION FILED SEPT. 29. 1914.

IINITED STATEE EATENT @I FIQE.

FRANCIS M. CASE, OF CLEVELAND, OHIO, ASSIGNOR OF ONE-HALF TO C. S. BRITTON AND ONE-HALF TO JAMES E. DOYLE,.BOTH OF CLEVELAND, OHIO.

SUCTION APPLIANCE.

Specification of Letters Patent.

Patented Sept. 17, 1918.

To all whom it may concern:

Be it known that I, FRANCIS M. CAsn, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and use ful Improvement in Suction Appliances, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention is particularly associated with the relative configuration of such parts of the motor and fan as surround the re quired bearing surfaces.

The specific object, besides providing a durable, simple and hence economical improvement, is to protect the lubricant upon the bearing surfaces, from the suction efiect of the impeller. The means which I have devised for preventing the subjection of such bearing surfaces to the damaging tendency on the part of a sustained flow of air to dry while simple is quite elficacious.

My inventive conception is associated with means which are hereinafter explained and variously combined in the claim. /Vhile the annexed drawing and particular description thereof, set forth in detail the preferred form embodying my invention, it should be understood that the means only exemplifies one of many diversified mechanical forms with which the principle of my invention may be properly applied.

Adverting to the drawing:

Figure I is part elevation, part section of a construction. embodying my invention.

Fig. II is a similar view on a transverse line of vision.

The structure illustrated in the drawing will be seen to comprise an electric motor A having a laterally projecting bearing a in which a motor shaft a is movable and from which such shaft projects a given distance as seen in Fig. II. The motor A is mounted upon any suitable type of base B including, however, as a portion of its top a surface Z) located underneath the projecting bearing a.

The pair of complementary annular casing members C and D having concave sides opposed to and spaced from each other, are held in such position in a manner now described, and are adapted to inclose the revoluble im eller. The casing member C is provided slow with a transversally extend ing flange 0 adapted to rest upon the surface 6 and be secured thereto in any approved manner. The flange 0 is connected with the upper portion of the casing member C by means of a pair of stiifening webs 0 The outer circumference of the casing member C is fashioned as an outwardly bent angular flange 0 while centrally such casing member is provided with an opening o somewhat larger than the bearing a. The complementary easing member D involves a centrally flared portion (5 in connection with an opening (Z above, and its outer circumference is similarly fashioned as an outward-bent angular flange (F. The casing members and D are secured to each other in the desired position by means of a pair of complementary securing rings E and E. Below the rings E and E are enlarged and constitute wholly tangential extensions 6 and c as seen in both of the figures in the drawing. The casing members C and D are secured to the inner annular edge of the rings E and E respectively by means of a plurality of rivets 6 Similarly the outwardly disposed flange edges of the rings E and E are aliixed to each other by a plurality of circumferential and tangential rivets e As so arranged the opening 0 is disposed substantially opposite the opening (Z and merely hindered of direct connection therebetween because of the interpositioning of the impeller to be described in the next paragraph.

An impeller F is carried at f upon the projecting end a of the shaft and includes in its structure a plurality of radially disposed vanes F. The shape of the vanes f is such that the revolution thereof produces a strong suction effect or flow in the direction from the openings 0 and (Z and toward the tangential exhaust outlet. Heretofore, so far as I am aware, the objectionable tendency of an atmospheric disturbance to dry a lubricated bearing has been allowed full play. It is for the purpose of precluding the possibility of such an occurrence that I have designed the impeller F so as to carry a collar f adapted to project through the opening 0*. The collar f is spaced from the edges of the opening 0 and furthermore extends both beyond the outer side of such edge and the extremity of the bearing a" a sufficient distance to divert the induced flow of air from the latter. In accordance with my constructions the air current rushes in the direction of least resistance through the opening 0 outwardly adjacent the collar f friction whereby its working life and efii ciency are increased.

I claim A suction appliance comprisin an electric motor frame having a bearing a motor shaft rotatable therein and projecting therefrom, a casing provided with induct-ion and discharge openings, the induction opening being intersected by said shaft, an impeller carried on the projecting end of said shaft close to said bearing, said impeller being movable in said casing and between said the end of such bearing in a direction reverse a to that of the projecting portion of said shaft whereby to ward off from such bearing the counter air current passing through such induction opening.

Signed by me, this 12th day of Sept. 1914.

i FRANCIS M. easn. Attested by B. W. vBRooKnT'r, MARIE WAGNER.

Copies of this-patent may be obtained for five centseach, by addressing the Commissioner of Patents washington D. O.

Images