US611220A - John c - Google Patents

Description

No. s||,220. Patented Sept. 20, I898. J. c. MOORE &. J. L. THURMAN. MEANS FOR REGULATING CHURN POWERS.

(Application filed May 15, 1897.)

(N0 Model.)

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UNITED STATES PATENT @FFICEQ JOHN C. MOORE AND JOHN L. THURMAN, OF NEWTOWVN, KENTUCKY,

ASSIGNORS OF ONE-THIRD TO ALABAMA.

JOSEPH HAWKINS, OF DOLOMITE,

MEANS FOR REGULATING CHURN-POWERS.

SPECIFICATION forming part of Letters Patent No. 611,220, dated September so, 1898,

Application filed May 15,1897. Serial No. 636,708. (No model.)

To all whom it may concern.-

Be it known that we, JOHN C. MOORE and JOHN L. THURMAN,OfNeWtOWn,1n the county of Scott and State of Kentucky,have invented certain new and useful Improvements in Means for Regulating Churn-Powers; and we do hereby declare the following to be a'full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make and use the same. I

Our invention relates to churn-motors, and has for its object to provide a simple and compact construction and arrangement of operating mechanism, including suitable governing devices, whereby the speed of operation may be regulated to suit the work to be accomplished.

Further objects and advantages of this invent-ion will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claim.

In the drawings, Figure l is a horizontal section of a churn-operating mechanism constructed in accordance with our invention. Fig. 2 is a detail view in perspective of the governing mechanism with the parts thereof detached.

Similar numerals of reference indicate corresponding parts in both figures of the drawlngs.

In a suitable casing 1, of which one side wall is provided with an offset portion '2, is mounted an arbor 3, to which one end of a driving-spring 5 is attached, a driving-gear 4 being loosely mounted upon said arbor and having the outer extremity of said spring attached thereto. The arbor is fitted with suitable ratchet mechanism, including a gear 6 and a cooperating pawl 7, whereby it may be maintained at the desired adjustment after the winding of the driving-spring and during the subsequent operation of the mechanism, said arbor being fitted with a crank. 8 or with any equivalent meansiwhereby the spring may be adjusted.

Meshing with the driving-gear 4 is a pinion 11, having its spindle 9 mounted in suitable pins 33.

' bearings in the oppositeside walls of the easing, and also carried by the spindle of the pinion 11 is afast gear '10, which 'in'turn meshes with a driven pinion 13 on the crankshaft 12, also mounted in bearings in the casing. Said crank-shaft carries a crank 14, having a Wrist-pin 15, preferably provided with an antifriction roll or sleeve 16 for operating in a transverse slot 20 in the cross-head 19, which is secured to a reciprocatory bar 17. Said reciprocatory bar is adapted to carry a dasher-staff. (Not shown.) The crank-shaft 12 is extended beyond the opposite side wall of the casing from the crank-arm 14 to form a spindle, upon which is mounted the crosshead 29 of a governing device, said cross head being extended to, form, respectively, inwardly and outwardly projecting arms 28,to which are attached weights 31, these Weights being slotted, as shown at 32, to receive the crescent-shaped extremities of the arms 28, and being secured thereto by means of cross- The cross-head 29 is preferably fulcrumed in a longitudinal slot 30, formed in the extremity of the spindle. Fixed to the contiguous side wall of the casing concentric withthe spindle 12 is a friction-washer 27 for cooperation with a friction-disk 26, which is carried by a sleeve 25, mounted for axial sliding movement upon the spindle 12, and connected by means of a link with one arm of the cross-head 29, the pivotal point of connection of said link with the cross-head being indicated at 36. The other end of the link is connected by an ear 34 on the sleeve. The sleeve 25 is longitudinally slotted, as shown at 37, for the reception of a cross-pin 38, carried by the spindle, whereby rotary motion is communicated from the spindle to the sleeve, and also carried by the sleeve at an interval from the plane of the friction-disk 26 is a collar 42, between which and the plane of the disk is interposed the free bifurcated end 41 of a resistance-spring 39. This spring is permanently attached, as at 40, to the exterior surface of the contiguous side wall of l the casing, and in cooperation therewith is mounted an adj nsting device consisting of a screw 43, preferably threaded in the contiguous side wall of the casing and having a bearing against the inner or contiguous surface of the spring at a point spaced from its point of attachment to the casing. This adjusting-screw may be provided with a milled thumb wheel or disk, as indicated, to facilitate the adjustment thereof.

From the above description it will be seen that the operation of the mechanism involves the communication of motion from the driving-gear 4, which is actuated by the spring 5 through the intermediate train of gearing to the driven shaft or spindle 12, and thence through the crank-arm and slotted cross-head to the reciprocatory bar 17, and also that the rotary motion of the shaft or spindle 12 causes the weighted arms of the governing crosshead to be thrown out by centrifugal force, and that this operation of the cross-head serves to move the sleeve 25 inwardly, and thus bring the friction-disk 26 into contact with the friction-washer 27. Obviously the amount of pressure exerted by the frictiondisk upon the surface of the friction-washer will be proportionate to the speed of rotation of the shaft 12; but in order that a certain speed of rotation maybe allowed without obstruction upon the part of the friction devices we employ the above-described resistance-spring 39, which may be adjusted by the means provided for that purpose to exert more or less outward pressure upon the collar 42, and thus require more or less speed of rotation of the shaft 12 to cause the contact of the disk 26 with the washer 27. Furthermore, it will be seen that the construction is compact, and that, with the exception of the governor mechanism, the operating parts of the apparatus are housed, and hence are protected from accumulations of dust and from exposure to moisture.

Having described our invention, what we claim is-- In a churn-motor, the combination with operating mechanism including a driven shaft and connections, of a governor cross-head fulcrumed upon said driven shaft and provided with outwardly and inwardly extending weighted arms, a sleeve mounted to slide upon said shaft and having connection by an intermediate link with the governor crosshead, a fixed friction-washer, a friction-disk carried by the sleeve for contact with said washer, a collar also carried by said sleeve and spaced from the friction-disk, a resistancespring terminally arranged in the interval between said friction-disk and the collar, for yieldingly resisting the movement of the friction-disk toward the washer, and an adjusting-screw arranged in operative relation with said resistance-spring for varying the pressure of the extremity thereof upon the collar of the sleeve, substantially as specified.

In testimony whereof we have signed this specification in the presence of two subscribing witnesses.

JOHN G. MOORE. JOHN L. THURMAN.

\Vit-n esses:

O. B. ALLGOOD, D. P. EWING.

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