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Self-Closing Float Dasher Churn: Floats That Open to Churn and Close to Gather
Woody

Зохиогч

Woody

6. Аравдугаар сар 2026NO
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Self-Closing Float Dasher Churn: Floats That Open to Churn and Close to Gather

Davis wanted one dasher that would churn "in the most effectual manner," then gather the butter and work out the buttermilk. Robert W. Davis of Rodgersville, New York, received US 7,233, dated 2 April 1850, for self-adjusting rotary churn-dashers. The dasher's fixed slats are set "at such angles as to force the cream toward the center"; movable floats hinged to its sides stand open when turning that way and move it outward, "which various and contrary motions so agitate it, that the butter is soon formed." Turned backward, the floats close on the slats so the outside forms "a uniform curve concentric to the axis," which throws the butter to the sides and bottom and presses it free of milk. This rung looks at the floats' swing, then prints the sides, slats and floats, assembles the dasher in a box, and makes butter.
Дунд шат
About 4 hours, plus printing

Зааварчилгаа

1

The floats' swing

Jupyter дэвтэр ачаалж байна…
2

A dasher that churns one way and gathers the other before it

The embedded blueprint reverses fixed paired blades to roll the butter up. Davis lets hinged floats change shape by themselves when the crank is reversed.
3

Read US 7,233

"In order to gather the butter and work it, the dasher is then turned in the contrary direction, and the movable slats then closing the outside of the slats of the dasher form a uniform curve concentric to the axis and moving with the convex side foremost. By a few revolutions of the dasher the butter is thrown from the center to the sides and bottom of the churn box, and these gathered into a roll."
4

Print the parts

Print two side pieces, four fixed slats, four curved floats with hinge eyes and the crank arm. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Энэ алхмын материал:

PETG филаментPETG филамент1 ширхэг

Шаардлагатай багаж:

FDM 3D хэвлэгчFDM 3D хэвлэгч
5

Print the side

The side, printed as step 4 describes.
Дизайны файлSTLCC0 - Free
6

Print the slat

The slat, printed as step 4 describes.
Дизайны файлSTLCC0 - Free
7

Print the float

The float, printed as step 4 describes.
Дизайны файлSTLCC0 - Free
8

Print the crank arm

The crank arm, printed as step 4 describes.
Дизайны файлSTLCC0 - Free
9

Assemble the dasher

Slide the two side pieces onto a 10 mm square hardwood shaft 148 mm apart and screw the four slats between them. Hang each float between the arms' knuckles on a 3 mm stainless rod as its hinge, so it swings open one way and lies against its slat the other.

Энэ алхмын материал:

Хатуу модон гадасХатуу модон гадас1 ширхэг
Зөөлөн ганан дугуй баганзЗөөлөн ганан дугуй баганз1 ширхэг
Машины шурагМашины шураг1 ширхэг
Модны цавууМодны цавуу1 ширхэг

Шаардлагатай багаж:

Төмөр хөрөөТөмөр хөрөө
Халив иж бүрдэлХалив иж бүрдэл
Гар хөрөөГар хөрөө
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The box

Take a food-safe box about 230 × 190 × 200 mm. Drill both ends on the axis 100 mm up, pass the shaft through with a leather washer at each end, and glue the crank arm and a dowel handle on.

Энэ алхмын материал:

Хүнсний зэрэглэлийн хадгалах савХүнсний зэрэглэлийн хадгалах сав1 ширхэг
Арьсан туузАрьсан тууз1 ширхэг
Модны цавууМодны цавуу1 ширхэг

Шаардлагатай багаж:

Утасгүй өрөмУтасгүй өрөм
Өрмийн үзүүрийн иж бүрдэлӨрмийн үзүүрийн иж бүрдэл
11

The build in 3D

FreeCAD model of this build, not of the patent: the box with one side off to show the dasher's side pieces, the fixed slats and the hinged curved floats, and the crank.
Дизайны файлBLENDCC0 - Free
12

Churn forward, gather backward

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 1.5 litres. Crank forward, floats open; time until the butter comes. Then crank backward so the floats close and the round dasher gathers the butter into a roll; draw off the buttermilk and keep cranking to work it, as he did. 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.
Алхам 12 - Image 1

Энэ алхмын материал:

Өтгөн цөцгийӨтгөн цөцгий1500 мл
Бүдүүн далайн давсБүдүүн далайн давс1 ширхэг
УсУс1 ширхэг

Шаардлагатай багаж:

Дотор нь үлдээдэг мэдрэгчтэй термометрДотор нь үлдээдэг мэдрэгчтэй термометр
Секунд хэмжигчСекунд хэмжигч
Дижитал гал тогооны жинДижитал гал тогооны жин
Зэвэрдэггүй ган том хольц аягаЗэвэрдэггүй ган том хольц аяга
13

Floats that won't open or close

Self-closing float dasher troubleshooting.

Flow

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14

History and honest limits

**Robert W. Davis** of Rodgersville, Steuben County, New York, received US 7,233, dated 2 April 1850. His drawing shows the dasher in a churn box with slats D strengthening it. He claimed "the self adjusting float or slat (C) which opens when churning the cream and closes of itself when the dasher is turned in the opposite direction to gather the butter." **Honest limits.** A food-safe box and printed parts stand in for his wooden box and dasher. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Материал

10

Шаардлагатай багаж

10

Загварын файлууд

5

CC0 Нийтийн домэйн

Энэ загвар CC0 дор гаргагдсан. Та зөвшөөрөл авахгүйгээр хуулах, өөрчлөх, түгээх, ашиглах боломжтой.

Загвараар дамжуулан бүтээгдэхүүн худалдаж авч Бүтээгчийг дэмжээрэй Бүтээгчийн шимтгэл Борлуулагчаар тогтоосон, эсвэл энэ загварын шинэ хувилбар үүсгэж орлогоо хуваахын тулд өөрийн загварт холбоос болгон оруулна уу.

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