US655391A - Churn. - Google Patents

Description

T. J. CHENEY.

GHUBN.

(Application filed May 8, 1899.)

Patented Aug. 7, 900.

(No Model.)

Ilillllllllllillllll) TATES THOMAS J. CHENEY, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-IIAIiF TO WVILLIAM R. TUCKER, OF SAME PLACE.

CHURN.

SPECIFICATION forming part of Letters Patent No. 655,391, dated August '7, 1900.

Application filed May 8, 1.899. a

T0 at whom it may conceive.-

Be it known that I, THOMAS J. CHENEY, of Chicago, in the State of Illinois, have invented certain new and useful Improvements in Churns, of which the following is a specification.

This invention relates to that class of churns in which an agitator in the churnreceptacle is connected with operating mechanism placed beneath the receptacle by a shaft extended through its bottom for revolving the agitator. The advantages of this construction are that the operating mechanism can be more compactly disposed of with relation to the receptacle and the operatingshaft does not interfere with the use of an ordinary cover on the top of thereceptacle. As ordinarily constructed a packing is used where the shaft passes through the bottom to prevent leaking. This increases the friction on the shaft and is otherwise objectionable; and one of the objects of my improvement is to provide means other than a packing in this class of devices for preventing leaking where the shaft passes through the bottom of the receptacle.

The invention also relates to the class of churns in which a combined agitator and aerator is used; and a further object of myimprovement is to provide an improved agitator and aerator with a view of efiecting proportionally-less agitationby the movementv of the agitator and greater aeration and distribution of the air introduced into the liquid by the agitator and in this way to secure equally as good or better results with much less expenditure of power.

I attainthese objects by the means illustrated in the accompanying drawings, in which Figure l is a central vertical section of a churn of the class mentioned provided with my improvements. Fig. 2 is a top view, the cover being removed. Fig. 3 is a detail showing in enlarged side elevation a connecting cap-piece of the tubular shaft of the agitator. Fig. at is a detail showing an end view of a detached part. i I

In the drawings, A is a base piece provided with radial extensions A, having sockets for legs A for supporting the base above the Serial No. 715,910. a. model.)

floor. This piece has a vertical extension a at one side, to the upper end of which the drive wheel B is pivoted and in the lower end of which is journaled a shaft B, connected by a gear I) with the drive-wheel. The shaft B is also journaled in a vertical piece a, depending from the bottom of the base-piece, and provided with a miter-gear b, engaging a gear 12 of the operating-shaft C, journaled in a central depending tubular extension a of the base-piece.

D is the churn-receptacle, rested upon the base or secured thereto by bolts d. The bottom of the receptacle is provided with a central perforation d for admitting the shaft C, and this perforation is surrounded by the bore of a stationary tube E, secured to the bottom of the receptacle by means of a liquid-tight joint, so as to prevent any escape of liquid from the receptacle into the tube. Said tube is extended from the bottom up to top of the receptacle above the level of any liquid which it is intended to contain. The shaft C is extended'throu'gh the stationary tube E and provided with a head 0 or enlargement which Will restupon the top end of thetube and support the shaft in the tube. The upper end 0 of the shaft is square. F is a' larger rotatable tube, the lower end f of whichis fitted to revolve upon the stationary tube E and the upper'end of which is connected with the square end a of the operating-shaft C by tral opening to fit the square end of the operating-shaft and slots f for engaging pins f on the rotatable tube, so as to cause said tube to revolve with said shaft. The slots f have lateral or horizontal extensions at the top, whereby the cap can be turned slightly on the rotatable tube, so as to cause the pins to enter the horizontal portion of the slot, and thereby support the weight of the tube suspended on the cap-piece and prevent its dropping down upon the bottom of-the receptacle. Near the lower end of rotatable tube F are several openings 6, and around each of these is secured to said tube thesinaller open end e of a flattened flaring tube G. The several tubes G radiate from the rotatable tube F, with their larger ends opened, and are placed edge to edge in a plane perpendicular to the axis of means of a cap-piece F, having a square cenrotation, so that in rotation they follow each other, and the sharp edges cut through the liquid in the receptacle near the bottom with much less friction or resistance than would be the .'case if broader areas were pushed square against the liquid. Both the interior and the exterior of these flattenedtubes are smooth and even from end to end and open at both ends, so as to present as little resistance as possible to the movement of the liquid upon and through them. \Vhen submerged and not in action, the liquid fills them and ex tends up in the rotatable tube F to its level in the receptacle; but when in rotation centrifugal action causes the liquid in the rotatable tube F and the tubes G to be thrown out and displaced by air drawn down through said tube F. The increment of volume outwardly in the radiating outwardlyflaring tubes aids centrifugal action and so produces an increase of downdraft in the rotatable tube F over what non-flaring tubes similarly arranged would produce, and the air thus taken in passes out through horrizontally-wide and vertically-narrow exits at the ends of the flattened tubes G and is thereby more widely distributed throughout the liquid at the bottom than heretofore.

This form of agitator and aerator as compared with former forms produces in the liquid less agitation through the agency of the dasher movement and greater agitation through the agency of the introduced air. It, therefore, can be operated with less power than previous devices of this class. Another advantage which it possesses over prior construction is that it can be operated in either direction with equal facility and effect.

The circular motion of the liquid in the receptacle is retarded by narrow perforated plates H, supported against the wall of the receptacle by wire rings 72, adapted to fit within the receptacle and hold the plates with one edge against the wall of the receptacle.

What I claim is- 1. In a churn of the class mentioned the combination with a receptacle for containing the liquid provided with acentral perforation in the bottom, of a stationary tube secured with one end over the perforation by a liquid-tight connection with the bottom and extended up in the receptacle above the space for containing the liquid, the operatingshaft extended through the bore and projecting above the open end of the stationary tube and provided with means for supporting it vertically therein, a rotatable tube mounted on the stationary tube and connected with the projecting upper end of the ing-shaft extended through the base and projecting above the open end of the stationary tube and provided with means for supporting it vertically therein, a tube rotatably mounted on the stationary tube with intervening air-space and rigidly connected with the projecting upper end of the operatingshafts so as to rotate therewith, a series of open-ended flaring tubes radially mounted upon the rotatable tube near the bottom in aplane perpendicular to the axis of rotation, the small ends of said flaring tubes being connected so as to communicatewith the bore of the rotatable tube and the larger ends being flattened so as to straighten the upper and lower sides of said flaring tubes and form an acute ovate opening and exterior therefor, and mechanism for operating said rotatable tube as specified.

THOMAS J. CHENEY. YVitnesses:

ANNIE M. ADAMS, ROBERT VAN SANDS.

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