US817310A - Churn. - Google Patents

Description

PATBNTED APR. 1o, 1906.

J.. L. FORBES.

GHURN.

APPLIUATION FILED JULYza. 1905.

3 SHEETS-SHEET l.

Jmfy Inventor@ Attnys PATENTED APR. l0

J. L. FORBES.

CHURN.

APPLIOATION FILED JULYzs, 1905.

3 SHEETS-SHEET 2.

Inventor Attorneys PATENTED APR. 10, 1906.

J. L. FORBES.

CHURN.

APPLIOATION FILED JULY 2s. 1905.

HBETS-SHEET 3,

d@ n vent-l2 Attorneys IV O , ward UNITED STATES PATENT OFFICE.

Specification of 4Letters Patent.

Patented .April 10, 1906.

Application filed July 28, 1905. Serial No. 271,677.

.To all whom it may concern:

Be it known that I, JAMES L. FORBES, a citizenof the United States, residing at Fine pple, in the county of Wilcox and State of abama, have invented a new and useful Churn, of which the following is a specification. V v This invention' relates to improvements in churns, and has for its object to improve the construction' 'and increase the eiiiciency of devices of this character.

` With these and otherv objects in view, which will appear as the nature of the invention is better understood, the same consists in certain novel features of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which corresponding parts are denoted by like designating characters, is illustrated the referred form of embodiment of the inventlon capable of ca ing the' same into practical operation, it being understood that the invention is not necessarily limited thereto, as' various changes in the shape, proportions, and general assemblage of the parts may be resorted to without departing from the principle of the invention or sacricmg any of lts advantages.

In the drawings thus em loyed, Figure 1 is a sectional elevation of t e Inproved device, illustrating one mannerof arranging the same. Fig. I2 is a erspectivey view, inverted, of the closure of tlie cream-receptacle as em loyed in the construction shown in Fi 1i ig. 3 is a (perspective view, inverted, o the improved asher member. Fig.' 4 1s a view similar to Fig. 1, illustrating another form of the dasher-operating mechanism. Fig. 5 is a view similar to Fig. 4, illustrating another modification in the construction..v Fi s. 6 and 7 are enlarged sectional details o the modified construction shown in Fig. 5. Fig. 84 is a sectional view illustrating another modified construction of the device.`

In operating the improved device a receptacle10 for the milk from which the butter particles are to be separated is employed, and this receptacle may be of any suitable material and of any size or ca acity, but will preferably be of the barrel Vform and provided with a detachable closure 11, the latter with a central aperture 12 for the dasher-rod and provided with oppositely-disposed iny-extending stop-lugs 13, as shown more clearly in Fig. 2, when one form of the operating mechanism isemployed.

The dasher member (represented as a whole at 14) is in the form of a hollow drum opening downwardly and with a rod 15 eX- tending therefrom through the aperture 12 in the closure 11. The side wall of the dasher member is pierced at intervals with lateral apertures 16, and the lower rim of the same is' curved to conform to the apertures, so that the lower surface ofthe dasher is formed into a lurality. of small curved sections 17 beneat the lateral apertures. The dasher is of wood and with relatively thick walls to provide correspondingly large bearingsurfaces to the curved portions, and thus increase the effectiveness of the action, as hereinafter explained. Extending upwardly into the rod 15 is a cavity 18, communicating at one end with the interior of the dasher and having aI lateral branch 19 at the other end leading through the side of the rod. The dasher rod 15 is provided Iwith a screwthread by means of which the latter, together with the dasher 14, connected thereto, may be rapidly rotated back and forth at the same time' that itis moved vertically inthe receptacle, and this screw-thread may be exteriorly of the rod, as at 20 in Fig. l1 or as at 25 within a cavity 26 in the rod, as in Fig. 4. The threads are preferably in double form or extended to-insure greater longitudinal movement.

When the exterior threads 20 are 4emplolyed upon the rod 15, as in' Fig. 1, they wil be engaged b the stops 13, so that when the rod is moved ongitudlnally of thecreamreceptacle it will be rotated by the actionof the stationary stops .upon its screw-threads, as will be obvious.

Transverse spaced stop-pins 21 22 are disposed .in the free end ofthe rod 15, andslidably disposed upon the rod is a sleeve 23, the

latter having an internal screw-thread 24, engaging the stop-pms. By this arrangement 1t is obvious that when the sleeve 23 is moved in one direction the rod 15 and its attached dasher will be ra idly rotated `and moved longitudinally of t e rece ta-cle 10 in one direction, and then when t e sleeve is moved in 'the op osite direction the rotative and longitudina movements will be reversed. Thus alternate reciprocal and rotary motion will be im ar'ted to the dasher member and a most tlhorou h and effective action produced upon the m' k.

When the dasher is moved upwardly and downwardly and rotated in opposite direc- IOO 2 einem air, the importance of this aerating feature of the invention is apparent, and the simplicity and thoroughness with which this is accomplished in the present invention is a very im ortant and valuable feature ofthe same.

the form of the construction shown in Fig. 4, with the threads interiorly of the rod 15, a stationary rod 27 is supported, as by a bracket 28, from a stationary structure, such las a wall 29, and provided with lateral pins 30 in its lower end for en aging the thread 25 in the same manner and or the same urpose as the stops 13 on the cover 11 in t e construction shown in Figs. 1 and 2, as will be obvious. yWhen the -construction shown in Fig. 4 is employed', the sleeve 23 and rod 27 ma be removed, leaving the dasher-rod and dasher member to be operated manually, if required, which may be convenient under some circumstances.

The threads 20 or 25 may be attached to the rod 15 in any required manner or formed integral therewith, as preferred.

The dasher may be employed to take up the butter after the churning action is completed, as will be obvious.

The parts are easily separable for thorough cleansing and may be inexpensively manufactured and of any required material or of any size, so that the improved devices may be em loyed upon churns of any ca acity.

In t e modiiications shown in igs. 5, 6, and 7 the dasher-rod l5 is formed hollow from a oint above the cavit 18 and a sheetmetal lining or shell inserte therein, as re resented at 31, the shell being closed at t e lower end, as at 32, so that any lubricating material which may be inserted into the shell will not pass into the churn-body. Disposed transversely of the shell 31 near the top are pins 33 34, spaced apart vertically and connected by a vertical portion 35, the two pins serving the same purpose as the spaced pins 21 22 in the structures shown, respectively,in Figs. 1 and 4. Disposed within the shell 31 are two `tubular members 36 37, one Within theother and provided with reverselydisposed spiral grooves 38 39, the' ins 33 34 extending through both the spira grooves, as shown. Attached ri idly to the outer tubular member 36 is a and-gripmember 40, and connected into the upper end of the tubular member 37 is-a rod 41, the latter extended upwardly and connected, as by brackets 42, to a stationary support, such as a wall at 43, the rod 41 and brac ets 42 being similar to and performing the same functions as the rod 27 and brackets 28 in the modified structure shown in Fig. 4. The operationof the modified structure shown in Figs. 5, 6, 1

and 7 is substantially the same as that shown in Fig. 4, as will be obvious.

In Fig. 8 another modified construction is shown consisting of a rod 44, coupled, as at 45, to the dasher-rod 15 and extending upwardly through a bracket 46, the latter secured to a stationary support, such as a Wall 47. Mounted for rotation in the bracket 46 is a cable-drum 48, divided by a central iiange i 49 into two arts and with the rod 44 passing centrall t ough the drum. Extending above t e drum 48 and also above the upper member of the bracket 46 is a split sleeve 50, ta ered externally and also threaded externallly and provided with a nut 51. By this sim le means the dasher-rod may be clamped to t e drum at any desired oint by simply setting the nut 51 upon the s eeve 50. Cords 52 53 are connected reversely to the two partsy of the drum 48, so that by alternately drawing u on the same the dasher-shaft may be rotate alternately from left to right-and from right to left, the extent of the movement being controlled by the lengths .of the cords and the sizes of the drums.

Having1 thus described the invention, what is claime is- 1. A churn-dasher having a hollow interior opening downwardly and with spaced apertures leading laterally through the side Walls, the combined area of the apertures being greater than the internal area of the dasher member, a hollow rod extending from said dasher member and communicatin with said hollow interior, and means forsimu taneously rotating said dasher member and moving the same longitudinally of the body of the milk, Whereb apartial vacuum is produced Within the olloW dasher and a quantity of air forced through the milk at each stroke of the dasher.

2. In a churn, a downwardly-opening hollow dasher having spaced apertures through its side walls, a dasher-rod connected to said dasher and provided with a longitudinal recess communicating with the same and terminating in a lateral branch leading therefrom, and means for simultaneously reciprocating and reversely rotating said dasher and its connected dasher-rod.

' 3. In a churn, a hollow churn-dasher opening downwardly and having s aced lateral apertures through its side wa ls, a hollow stem connected to said dasher and communicating with the interior of thesame and provided with an internally-threaded longiy provided with an internal screw-thread for engaging said transverse stop-pins, and a rod having means for supportin in stationary position and provided with Iateral pins for 5 engaging the internal thread of said dasher- 4. In a churn, a hollow dasher o ening downwardly and having s aoed latera ,apertures through its side wa 1s, a hollow stem 1o connected to said dasher and communicating With the interior ofthe same and provided with a threaded portion, a threaded sleeve slidably engaging said rod, and 1ateral1y-ex tending stopins for engagement by said threaded mem ers.

In testimony `that I claim the foregoing as my own I have hereto alixed my signature in the presence of two witnesses.

. JAMES L. FORBES. Witnesses:

J. N. STANFORD, J. J. Coon.

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