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Bulged-Rocker Separator Churn: Oblique Rockers and a Diagonal Comb
William Newbrough of Mohican, Ohio, received US 14,677, dated 15 April 1856, for "oblique, bulged, rockers" under a box churn combined with a diagonal separator inside it, "for producing a violent agitation of the cream."
This rung prints the separator, rockers and bearings, builds the churn and makes butter.
Beginner
About 3 hours, plus printing
Instructions
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1
Rockers on the diagonal
Rockers on the diagonal
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2
A rocking churn before it
A rocking churn before it
An earlier churn rocked on its stool; Newbrough sets his rockers obliquely and adds a separator.
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Read US 14,677
Read US 14,677
"The churn is then rocked from side to side producing a rapid and violent agitation of the cream toward the sides and ends of the box and through the separator, causing thereby a speedy transformation of the cream to butter: the separator serving to catch the particles of butter and assist in the gathering of the same."
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Print the parts
Print the parts
Print the separator (/uploads/blueprints/bulged-rocker-separator-churn-separator.stl), two rockers (/uploads/blueprints/bulged-rocker-separator-churn-rocker.stl) and two bearings (/uploads/blueprints/bulged-rocker-separator-churn-bearing.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.
Materials for this step:
PETG Filament1 pieceTools needed:
FDM 3D Printer5
5
Box and separator
Box and separator
Use a rectangular food-grade container about 220 by 140 mm. Seal the two bearings in opposite corners with food-safe silicone and stand the separator's legs in them along the diagonal.
Materials for this step:
Food-Grade Storage Container1 piece
Silicone Sealant1 pieceTools needed:
Sandpaper6
6
Rockers and handle
Rockers and handle
Screw the two rockers under a pine board, parallel, running from alternate corners, with the swells on opposite sides, and stand the box on it. Push a 10 mm square hardwood shaft down through the lid into the separator and fix a thin hardwood lath on top as the springy handle.
Materials for this step:
Pine Board1 piece
#8 x 1" Wood Screw1 piece
Hardwood Dowels1 pieceTools needed:
Hand Saw
Cordless Drill
Screwdriver Set7
7
The patent drawing
The patent drawing
US 14,677 drawing sheet, public domain (expired patent).
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8
Churn
Churn
Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 1 litre and close the lid. Rock the box from side to side by the handle; time until the butter comes. Pour off the buttermilk, add cold water, churn a little and pour off again until it runs clear; work in a pinch of salt and weigh the butter.
Materials for this step:
Heavy Cream1000 ml
Coarse Sea Salt1 piece
Water1 pieceTools needed:
Leave-In Probe Thermometer
Stopwatch
Digital Kitchen Scale
Stainless Steel Mixing Bowl (Large)9
9
Troubleshooting
Troubleshooting
Bulged-rocker churn troubleshooting.
Flow
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10
History and honest limits
History and honest limits
**William Newbrough** of Mohican, Ashland County, Ohio, US 14,677, 15 April 1856. He wrote that the rockers could go under any ordinary churn. He claimed the combination of the oblique bulged rockers with the diagonal separator. A container, pine and printed parts stand in for his box. FDM prints hold food in their layer lines, so wash well and replace when worn.
Materials
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- 1000 mlPlaceholder
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Tools Required
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- 1 vendor sell this, none ship to you yetPlaceholder
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