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Valved Hollow-Staff Plunger Churn: A Valve at the Top, Air Forced Out at the Foot
TheChef

作成者

TheChef

6. 10月 2026DK
37
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Valved Hollow-Staff Plunger Churn: A Valve at the Top, Air Forced Out at the Foot

Ellicott's dasher draws its air down through its own handle. Peter F. Ellicott of Philadelphia, Pennsylvania, received US 7,454, dated 25 June 1850, for an atmospheric churn: "in any ordinary vertical churn," an upright hollow staff connected at the bottom to a square or round hollow plunger open below, with air holes in its sides "1/2 inch in diameter," and a valve inside the staff at its top "so arranged that when the said staff and plunger are raised, the valve will open," and when forced down "the valve will close, and the atmospheric air in the plunger will be forced through the body of the milk or cream." This rung works out the air per stroke, then prints the plunger and valve cap, fits them to a hollow staff, and makes butter.
初心者
About 1 hour, plus printing

手順

1

Air per stroke

Jupyter ノートブックを読み込み中…
2

A hand dasher that pumps air before it

The embedded blueprint pumps air with a tube over a loose plunger. Ellicott's air comes down a hollow staff through a valve at its top.
3

Read US 7,454

"C, Fig. 1 is a square or round dasher or plunger being hollow and open at the lower end with air holes, in the sides, 1/2 inch in diameter, and knobs outside. D, Fig. 2 is a full size section of valve placed on the top of the staff B, Fig. 1."
4

Print the parts

Print the hollow plunger open end down, with its twelve side holes and a socket for the staff, and the valve cap. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

このステップの材料:

PETGフィラメントPETGフィラメント1 個

必要な工具:

FDM 3D プリンターFDM 3D プリンター
5

Print the plunger

The plunger, printed as step 4 describes.
デザインファイルSTLCC0 - Free
6

Print the valve cap

The valve cap, printed as step 4 describes.
デザインファイルSTLCC0 - Free
7

Staff and valve

Cut a length of 12–13 mm food-grade tube as the hollow staff, as long as the churn is deep plus 150 mm, and glue it into the plunger's socket. Glue a small leather flap inside the valve cap over its port, hinged on the cap's pin, so it lifts to let air in as the staff rises and seats as it falls; glue the cap on the staff's top.

このステップの材料:

塩ビ管塩ビ管1 個
革の細帯革の細帯1 個
二液性エポキシ二液性エポキシ1 個

必要な工具:

金切りのこ(ハクソー)金切りのこ(ハクソー)
紙やすり紙やすり
8

The churn

Drill a food-grade bucket's lid at the centre for the staff, a little larger than it.

このステップの材料:

20 リットルのバケツ20 リットルのバケツ1 個

必要な工具:

コードレスドリルコードレスドリル
ホールソーセットホールソーセット
9

The build in 3D

FreeCAD model of this build, not of the patent: the churn cut away to show the hollow plunger with its side holes, the hollow staff through the lid and the valve cap on top.
デザインファイルBLENDCC0 - Free
10

Dash and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres. Work the staff up and down; bubbles should burst from the plunger's holes on each down-stroke. 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.
ステップ 10 - Image 1

このステップの材料:

生クリーム生クリーム2000 ml
粗い海塩粗い海塩1 個
水水1 個

必要な工具:

差しっぱなしのプローブ温度計差しっぱなしのプローブ温度計
ストップウォッチストップウォッチ
デジタルキッチンスケールデジタルキッチンスケール
ステンレス鋼の大きな混ぜ鉢ステンレス鋼の大きな混ぜ鉢
11

No bubbles, cream up the staff

Valved hollow-staff plunger churn troubleshooting.

Flow

Loading...
12

History and honest limits

**Peter F. Ellicott** of Philadelphia, Pennsylvania, received US 7,454, dated 25 June 1850. His drawing shows the plunger with knobs outside and a full-size section of the valve. He claimed "a hollow staff connected with a square or round hollow plunger, with a valve placed at the top, or at any point inside of said staff," to be used in any vessel containing milk or cream. **Honest limits.** Food-grade tube and printed parts stand in for his staff, plunger and valve; our holes are smaller than his half inch. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

材料

8

必要な工具

9

設計ファイル

3

CC0 パブリックドメイン

このブループリントはCC0で公開されています。許可を求めずに、自由にコピー、修正、配布、あらゆる目的で使用できます。

メイカーを応援するには、ブループリント経由で製品を購入してください。メイカーには メイカーコミッション がベンダーにより設定されています。または、このブループリントの新しいイテレーションを作成し、自分のブループリントにコネクションとして含めて収益を共有できます。

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