US2001550A

US2001550A - Centrifugal

Info

Publication number: US2001550A
Application number: US616617A
Authority: US
Inventors: Schaum Fletcher
Original assignee: FLETCHER WORKS Inc
Current assignee: FLETCHER WORKS Inc
Priority date: 1929-07-27
Filing date: 1932-06-11
Publication date: 1935-05-14
Anticipated expiration: 1952-05-14

Description

May "14, 1935. F. SCHAUM 2,001,550

' I CENTRIFUGAL' I Filed Jun 11, 1932 Patented May 14, 1935 UNITED STATES PATENT OFFICE Fletcher Works, Incorporated, Philadelphia, Pa., a corporation of Pennsylvania Original application July 27, 1929, Serial No.

381,410. Divided and this application June 11,

1932, Serial No. 616,617

8 Claims.

This invention relates to an improvement in centrifugals or extractors or other rotating bodies, hereinafter referred to as centrifugals, and has for one of its objects the provision of a construction in which the rotating parts need not be in balance, the structure being supported on a convex base resting on a curved or concave surface.

By reason of my improved construction the machine may be constructed with an open top which makes it very convenient for loading and unloading. The machine can be set on the floor without providing an opening or pit below it and no suspension is necessary to prevent vibrations set up in the machine from being transmitted to the building.

The drawing is a sectional elevational View of an embodiment of my invention.

Referring to the drawing in detail, I designates the tub and 2 the basket of my improved machine.

3 designates struts integral with the tub 1, these struts or supports being provided with a common foot 4 having a convex or spherical surface 5 bearing in the concave upper surface 6 of a member '1 which rests upon the floor. The bearing thus provided which is concentric with the tub constitutes the sole support for the tub and its associated mechanism.

The basket 2 is supported on and affixed to a shaft 8 supported in bearings 9 and I0 provided in the base I l of the tub I. The material passing through the sides of the basket 2 discharges through discharge opening I2. I

I3 designates a drive motor rigidly secured to the side of the tub I.

The lower end of the drive shaft 8 projects below the bottom ll of the tub as shown at M terminating short of the tub bearing and carries a pulley H: for a drive belt I6 driven from a pulley I! on the shaft of the motor l3.

It will be seen from the foregoing that my improved construction provides a machine in which the rotating part, to wit, the basket 2 and the non-rotating part, to wit, the tub I, are mounted for sliding movement in the bearing provided by the concave face 6 of the member I, and that this bearing is concentric with the basket 2 and is a portion of a sphere the center of which is on the axis of the basket and above the center of gravity of the loaded machine.

This application is a division of my copending application Serial No. 381,410, filed July 27, 1929.

What I claim is:

1. In a centrifugal machine the combination of a tub, a single sliding bearing therefor below the tub, and a rotatable basket within said tub and supported thereby, said bearing forming the sole support for said tub and its associated mechanism.

2. In a centrifugal machine the combination of a tub, .a spherical bearing for said tub, said bearing being below the tub in axial alignment therewith and concentric with the tub, and a basket mounted within the tub and supported 10 thereby and rotatable with respect thereto.

3. In a centrifugal machine, the combination of a nonrotatable tub, a plurality of struts carried by said tub, a curved foot common to all of said struts, a curved bearing in which said foot is slidable and by which the tub is supported, a centrifugal basket within said tub, and a shaft mounted for rotation in the bottom of the tub and supporting said basket.

4. In a centrifugal machine, the combination of a non-rotatable tub, a sliding bearing therefor, a centrifugal basket within said tub, a shaft extending through the bottom of said tub and secured to and supporting said basket, a drive pulley on the lower end of said shaft and directly over said bearing, and a motor carried on the side of said tub operatively connected to the lower end of said shaft to drive the shaft and said basket.

5. In a centrifugal machine, the combination of a tub, a drive shaft extending vertically of said tub and supported thereby, a basket within said tub and rotatably supported by said shaft, a slidable bearing beneath and supporting said tub and in alignment with said shaft, said shaft terminating short of said bearing.

6. In a self-balancing machine of the open top type, the combination of a tub, a basket mounted for rotation within the tub, and a single sliding bearing concentric with the basket and constituting the sole support of the tub.

7. In a centrifugal machine of the open top type, the combination of a basket, a tub supporting the basket, and a single sliding bearing supporting the tub, said bearing being a portion of a sphere the center of which is on the axis of 45 rotation of the basket above the center of gravity of the loaded machine.

8. In a centrifugal machine of the open top type, the combination of a tub, a rotatable basket within the tub and supported thereby, and a single concentric sliding bearing of such shape that the bearing alone sufiices to maintain the basket substantially vertical, said bearing being the sole support of the tub.

FLETCHER SCHAUM.