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Adjustable Concave Beater Churn: Beaters You Turn to Meet the Cream at Any Level
Woody

작성자

Woody

6. 10월 2026NO
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Adjustable Concave Beater Churn: Beaters You Turn to Meet the Cream at Any Level

A concave beater carries air into cream only where its face meets the cream's surface flat; fixed on its arms, that confines the churn "to a definite and unchangeable quantity of milk." Thomas G. Clinton, George H. Knight and Edward H. Knight of Cincinnati, Ohio, received US 6,764, dated 2 October 1849, for an adjustable churn-dasher: concave beaters rotating vertically, each mounted between arms so it "can lie between the arms at any desired angle," for instance by "a square mortise in the arm with an octagonal journal to the beater," so the face and the surface can be brought into the same plane at any level of milk. The dasher comes apart for scalding, and they brought no metal into contact with the milk. This rung works out the angle for a given level, then prints the arms and four concave beaters with octagonal journals, fits them in a box, and makes butter.
중급
About 3 hours, plus printing

안내

1

Angle for the level

Jupyter 노트북 불러오는 중…
2

Buckets that carry air below the surface before it

The embedded blueprint carries air down in fixed buckets, which works best at one level. Clinton and the Knights make their concave beaters adjustable to any level.
3

Read US 6,764

"Being permanently fixed to arms extending from the axis of motion, the beater, (if the milk rises above that level) dips into the liquid by its inner edge; and, if the milk falls below the same level, the beater slides into the liquid by its outer edge—thus in both cases leaving the air where it found it; viz—at the surface of the milk."
4

Print the parts

Print two sets of arms (/uploads/blueprints/adjustable-concave-beater-churn-arms.stl), each four arms with a square mortise near the end, and four concave beaters on their sides (/uploads/blueprints/adjustable-concave-beater-churn-beater.stl): half-tube troughs with an octagonal journal at each end. Print the crank arm (/uploads/blueprints/adjustable-concave-beater-churn-crank-arm.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

이 단계의 재료:

PETG 필라멘트PETG 필라멘트1 개

필요한 도구:

FDM 3D 프린터FDM 3D 프린터
5

Assemble the dasher

Slide the two arm sets onto a 10 mm square hardwood shaft 142 mm apart, mortises in line. Push each beater's octagonal journals into a pair of mortises, turned to the angle the notebook gives for your cream's level, and pin the arms on the shaft with wedges, as theirs.

이 단계의 재료:

단단한 나무 목심단단한 나무 목심1 개
경목 블록경목 블록1 개

필요한 도구:

손톱(핸드소)손톱(핸드소)
사포사포
6

The box

Take a food-safe box about 200 × 190 × 190 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.

이 단계의 재료:

식품용 보관 용기식품용 보관 용기1 개
가죽 띠가죽 띠1 개
목공용 접착제목공용 접착제1 개

필요한 도구:

무선 드릴무선 드릴
드릴 비트 세트드릴 비트 세트
7

The build in 3D

FreeCAD model of this build, not of the patent: the box with one side off to show the two arm sets on the shaft and the four concave beaters, each turned on its octagonal journals, with the crank.
디자인 파일BLENDCC0 - Free
8

Set, crank and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 1.5 litres and note how far below the shaft the cream stands. Set the beaters to the notebook's angle, crank so the hollow faces come down onto the cream, and 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.
단계 8 - Image 1

이 단계의 재료:

생크림생크림1500 ml
굵은 천일염굵은 천일염1 개
물물1 개

필요한 도구:

꽂아 두는 프로브 온도계꽂아 두는 프로브 온도계
스톱워치스톱워치
디지털 주방 저울디지털 주방 저울
큰 스테인리스강 믹싱볼큰 스테인리스강 믹싱볼
9

Few bubbles, beaters that turn on their own

Adjustable concave beater churn troubleshooting.

Flow

Loading...
10

History and honest limits

**Thomas G. Clinton, George H. Knight and Edward H. Knight** of Cincinnati, Ohio, received US 6,764, dated 2 October 1849. They also showed cylindrical journals held by pins or wedges, and a form with no shaft from head to head so the butter could gather within the beaters' sweep; they could use irons "at a cost of 18 cents." They claimed making the concave beater adjustable to any desired angle, so the face of the beater and the surface of the milk meet in the same plane at any quantity. **Honest limits.** A food-safe box and printed parts stand in for their wooden churn; our octagons give settings 45° apart, not any angle. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

재료

9

필요 도구

9

디자인 파일

1

이 블루프린트로 만드는 것

CC0 퍼블릭 도메인

이 블루프린트는 CC0로 공개되었습니다. 어떤 목적으로든 자유롭게 복사, 수정, 배포 및 사용할 수 있습니다.

제품 구매를 통해 메이커를 지원하세요. 판매자가 설정한 메이커 커미션 을 받거나, 이 블루프린트의 새로운 반복을 만들어 연결로 포함시킬 수 있습니다.

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