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Two-Compartment Gate Churn: Paddles Drive the Cream Through a Slotted Gate Into an Open Side and Round Again
Buttercup

Criado por

Buttercup

7. outubro 2026IE
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Two-Compartment Gate Churn: Paddles Drive the Cream Through a Slotted Gate Into an Open Side and Round Again

Silas F. Lefler of Racine, Wisconsin, received US 19,034, dated 5 January 1858, for a churn divided into a closed compartment, where spiral paddles turn under a housing, and an open one, joined by gateways at the partition's foot. A slotted gate in one gateway breaks the current, and the cream, driven into the open side, "is exposed to the action of the fresh air" before it returns. This rung prints the partition, gate and paddle hubs, builds the churn and makes and gathers butter.
Intermediário
About 4 hours, plus printing

Instruções

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A loop through the open side

A carregar o notebook Jupyter…
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Cream sent round a divided vessel, before it

True splits the cream round a separator; Lefler drives it in a loop through a gate and an open side.
3

Read US 19,034

"The shaft with the paddles being then revolved, the cream in the close compartment (A) will be forced through the gate (G), thus breaking its direct motion and causing it to force its way into the open compartment (B) in a highly agitated state most propitious for the formation of butter."
4

Print the parts

Print the partition with its gateways and guideways (/uploads/blueprints/two-compartment-gate-churn-partition.stl), the slotted gate (/uploads/blueprints/two-compartment-gate-churn-gate.stl) and three paddle hubs (/uploads/blueprints/two-compartment-gate-churn-paddle-hub.stl). The partition needs a bed at least 240 mm long. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Materiais para este passo:

Filamento PETGFilamento PETG1 peça

Ferramentas necessárias:

Impressora 3D de filamento (FDM)Impressora 3D de filamento (FDM)
5

Box, partition and shaft

Use a rectangular food-grade container about 240 by 170 mm and 180 mm deep. Stand the partition across its length 50 mm from one side, sealed at its ends with food-safe silicone. Run a 10 mm square hardwood shaft through the container's ends in the larger compartment, the three hubs on it each turned 40 degrees, with a crank outside.

Materiais para este passo:

Recipiente de armazenamento de grau alimentarRecipiente de armazenamento de grau alimentar1 peça
Vedante de siliconeVedante de silicone1 peça
Cavilhas de madeira duraCavilhas de madeira dura1 peça
Tábua de pinhoTábua de pinho1 peça
Cola de madeiraCola de madeira1 peça

Ferramentas necessárias:

SerroteSerrote
Berbequim sem fiosBerbequim sem fios
Jogo de brocasJogo de brocas
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Housing and gate

Bend a strip of thin stainless sheet over the paddles as the housing, screwed to the container's ends. Slide the gate into the guideways in front of the gateway on the side where the paddles rise.

Materiais para este passo:

Chapa de aço inoxidável - 304Chapa de aço inoxidável - 3041 peça
Parafusos de máquinaParafusos de máquina1 peça

Ferramentas necessárias:

Tesoura de chapaTesoura de chapa
Berbequim sem fiosBerbequim sem fios
Conjunto de chaves de fendasConjunto de chaves de fendas
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The patent drawing

US 19,034 drawing sheet, public domain (expired patent).
Passo 7 - Image 1
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Churn, then gather

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour 2 litres into the open side. Crank steadily; time until the butter comes. Move the gate to the other gateway and crank on until the butter has gathered in the open side before it, then lift it out. 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.

Materiais para este passo:

Natas para baterNatas para bater2000 ml
Sal marinho grossoSal marinho grosso1 peça
ÁguaÁgua1 peça

Ferramentas necessárias:

Termómetro de sonda permanenteTermómetro de sonda permanente
CronómetroCronómetro
Balança digital de cozinhaBalança digital de cozinha
Taça grande de aço inoxidávelTaça grande de aço inoxidável
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Troubleshooting

Two-compartment churn troubleshooting.

Flow

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History and honest limits

**Silas F. Lefler** of Racine, Wisconsin, US 19,034, 5 January 1858. He made the partition and shaft removable so the churn could be cleaned thoroughly. He claimed the churn of an open and a closed compartment with gateways and a gate passing the cream in a continuous current and gathering the butter. A stainless strip stands in for his housing; a container and printed parts for the rest. FDM prints hold food in their layer lines, so wash well and replace when worn.

Materiais

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Ferramentas necessárias

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CC0 Domínio Público

Este blueprint é liberado sob CC0. Você é livre para copiar, modificar, distribuir e usar este trabalho para qualquer finalidade, sem pedir permissão.

Apoie o Maker comprando produtos através do Blueprint, onde ele ganha uma Comissão Maker definida pelos vendedores, ou crie uma nova versão deste Blueprint e inclua-o como conexão no seu próprio Blueprint para compartilhar receita.

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