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Publication numberUS1413672 A
Publication typeGrant
Publication dateApr 25, 1922
Filing dateApr 12, 1920
Priority dateApr 12, 1920
Publication numberUS 1413672 A, US 1413672A, US-A-1413672, US1413672 A, US1413672A
InventorsLowe Robert G
Original AssigneeLowe Robert G
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Power agitator
US 1413672 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)


1 POWER AGITATOR. APPLICATION FILED APR. 12: I920- 1,41 3,672. Patented p 25, 1922.



Specification of Letters Patent. v Patented Apr. 25, 1922- .lpplicatlon filed April 12, 1920. Serial No. 873,244.

To wllwhom it may concern:

Be it known that I, ROBERT G. Down, a citizen of the United States, and residing at Clawson, in the county of Oakland and State of Michigan, have invented a new and Improved Power Agitator, of which the following is a specification.

This invention relates 'to means for sifting, mixing, agitating or grinding granular materials or liquids, and its object is to impart gyratory movement to the receptacle in which such materials are contained.

This invention consists, in combination with a receptacle, of a suspended frame to support the same,'and an electric motor to impart gyratory movement to the frame,-

said motor being provided with an armature shaft on which a weight is mounted.

It further consists in mounting a heavy sector on each end of the armature shaft of the electric'motor. I

It "further consists in forming the receptacle with a fiat bottom which is normally horizontal and in mounting the motor below said bottom with its shaft at right angles to the middle thereof.

It also consists in the details of construction illustrated in the accompanying drawing and particularly, pointed out in the claims.

In the drawing, Fig. 1 is an elevation of this improved power agitator, arts being broken away to more clearly isclose the construction. Fig. 2 is'a section on the line 22 of Fig. 1 'on a larger scale.

Similar reference characters refer to like parts throughout the several views.

' The receptacle 1 to hold'the materials to be sifted or agitated may be of any desired form, size or construction, that shown in the drawing being a sieve or riddle provided with a woven bottom 2. It is secured to two brackets 3 which are mounted on the tubular cross bars 4 which connect to the Ts 5 at the lower ends of the tubes 6. A connection 7 at the upper ends of these tubes 6 has an eye bolt 8 by which this agitator may be suspended.

An electric motor is mounted below the riddle and comprises a housing 9 mounted in a frame member 10 which is .generally cylindrical with two hollow arms 12 into which the cross bars 4 connect. The armature shaft 13 is shown to be vertical and has a weight 14 eccentrically mounted at both ends although one may be omitted if desired. The wires 15 enter the connection 7, pass down through one tube 6 and one tube 4 and a hollow 12 to the motor. The mov able parts of the motor are protected by the caps 16 and 17. Any desired bearings 18 may be provided for the armature shaft.

When the motor is energized and the shaft 13 rotated, the inertia of the weights 14 will cause the entire structure to gyrate, traveling in a circular path of but small diameter, depending upon the speed of the motor and the weight of the various parts. The stresses on the bearings are not so extraordinary but that they may be taken care of by good ball bearings.

When the centers of gravity of the weights 14 are on the same-side of the shaft 13 in a plane passing through the axis of the shaft, the gyratory movement will cause the shaft to travel through a cylinder of movement, while having these centers of gravity on opposite sides of the shaft while still in said plane will cause the shaft to describe a figure which is extremely irregular.

.The proportions and sizes of the several parts mayall be changed by those skilled in the arts without departing from the spirit of my invention as set forth in the following claims.

I claim 1 1. The combination of a frame, a receptacle mounted thereon,- an electric motor rigidly mounted in the frame and comprising an armature shaft, and a weight eccentrically mounted on each end of said shaft, said shaft being substantially vertical.

2. The combination of a frame, a receptacle mounted thereon, an electric motor rigidly mounted in the frame and comprising an armature shaft, a weight eccentrically mounted on each end of said shaft. said shaft being substantially vertical, and caps extending up and down from said frame and enclosing the motor.

3. The combination of a substantially cylindrical frame provided with arms, tubular members connecting to said arms and areceptacle mounted on said tubular members, a motor housing rigidly mountedin said frame, caps on the frame enclosing said housing, a shaft mounted vertically in said housing, and segment shaped weights mounted on the ends of said shaft.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2415268 *Sep 26, 1942Feb 4, 1947Hercules Powder Co LtdManufacture of casein by means of gyratory motion applied to an inclined screen
US2453883 *Jan 4, 1945Nov 16, 1948Wettlaufer John LVibratory screen
US2696302 *Jan 25, 1952Dec 7, 1954MeinzerScreening mechanism
US3273409 *May 6, 1963Sep 20, 1966State Steel Products IncMotion generator means
US3498456 *Jun 17, 1968Mar 3, 1970Day J H CoBalanced gyratory sifter
US5711327 *Oct 10, 1995Jan 27, 1998Fields; John T.System for vibration cleaning of articles including radiators
U.S. Classification209/332, 310/81, 310/91, 74/87, 209/367
International ClassificationB07B1/38, B07B1/28
Cooperative ClassificationB07B1/38
European ClassificationB07B1/38