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S-Dasher Friction-Board Churn: A Double-Curved Dasher Throwing Cream Over Grooved Boards
Woody

Creado por

Woody

6. octubre 2026NO
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S-Dasher Friction-Board Churn: A Double-Curved Dasher Throwing Cream Over Grooved Boards

The Walkers lined a square churn with grooved boards so the cream would be thrown against them "thus keeping up a constant friction on all sides." William Walker and Matthew C. Walker of Lancaster, Pennsylvania, received US 7,554, dated 6 August 1850, for a square water-tight box about fourteen inches each way holding about 40 quarts, half filled, with a "double curved or S shaped dasher" revolving in the centre by a crank and a thumb screw. Four grooved cross pieces run along each side of its curved ends; a friction board grooved underneath inclines across the top; a triangular board returns the cream onto it; a grooved friction piece sits in the lower right corner. This rung checks the box's capacity, then prints the S dasher, friction boards and corner piece, fits them in a box, and makes butter.
Intermedio
About 4 hours, plus printing

Instrucciones

1

Capacity

Cargando el cuaderno de Jupyter…
2

A shaped dash in a box churn before it

The embedded blueprint twists its wings into a screw. The Walkers bend theirs into an S and add grooved boards round the box for friction.
3

Read US 7,554

"As the churn is put in operation, the cream is thrown against the grooves of the incline board E, dashed around and under it, and passed over and against the friction piece G, in the right hand corner of box, while the ends of the dasher H and wide cross piece N keep the cream continually dashing against the grooves of the incline board E thus keeping up a constant friction on all sides."
4

Print the parts

Print the S dasher with its four grooved cross pieces in one piece, the grooved incline board, the grooved corner piece and the crank arm. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Materiales para este paso:

Filamento PETGFilamento PETG1 pieza

Herramientas necesarias:

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

Print the S dasher

The S dasher, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
6

Print the incline board

The incline board, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
7

Print the corner piece

The corner piece, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
8

Print the crank arm

The crank arm, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
9

Fit the box

Take a food-safe box about 180 mm each way. Glue the incline board across the top, sloping down to within 20 mm of the left side, grooves underneath, and a triangular plywood board on that side to turn the cream back onto it. Glue the corner piece in the lower right corner. Drill both ends on the centre for the dasher's shaft.

Materiales para este paso:

Recipiente de almacenaje de grado alimentarioRecipiente de almacenaje de grado alimentario1 pieza
Tablero contrachapadoTablero contrachapado1 pieza
Sellador de siliconaSellador de silicona1 pieza

Herramientas necesarias:

Segueta (sierra de marquetería)Segueta (sierra de marquetería)
Taladro inalámbricoTaladro inalámbrico
Juego de brocasJuego de brocas
SargentosSargentos
10

Dasher and crank

Pass a 10 mm square hardwood shaft through the box and the dasher, glue the crank arm and a dowel handle on one end, and hold the other with a thumb screw through a washer, as theirs. Cut an air hole in the lid.

Materiales para este paso:

Espigas de madera duraEspigas de madera dura1 pieza
Tornillos de máquinaTornillos de máquina1 pieza
Arandela planaArandela plana1 pieza
Cola de carpinteroCola de carpintero1 pieza

Herramientas necesarias:

SerruchoSerrucho
Taladro inalámbricoTaladro inalámbrico
Juego de destornilladoresJuego de destornilladores
11

The patent drawing

US 7,554 drawing sheet, public domain (expired patent).
Paso 11 - Image 1
12

Crank and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Fill the box half full, about 2.9 litres. Crank steadily; 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.

Materiales para este paso:

Crema de leche espesaCrema de leche espesa2900 ml
Sal marina gruesaSal marina gruesa1 pieza
AguaAgua1 pieza

Herramientas necesarias:

Termómetro de sonda permanenteTermómetro de sonda permanente
CronómetroCronómetro
Báscula digital de cocinaBáscula digital de cocina
Bol grande de acero inoxidableBol grande de acero inoxidable
13

Dasher that strikes, cream that escapes

S-dasher friction-board troubleshooting.

Flow

Loading...
14

History and honest limits

**William Walker and Matthew C. Walker** of Lancaster, Pennsylvania, received US 7,554, dated 6 August 1850. Their box was of inch boards; a ledge at the top confined the lid, with a projecting strip on its underside to close it tight, and an aperture M let the air through. They claimed the double-curved S-shaped dasher with the grooved pieces. **Honest limits.** A food-safe box and printed parts stand in for their wooden churn, at about a third of its size. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Materiales

11

Herramientas requeridas

11

Archivos de diseño

4

CC0 Dominio público

Este Blueprint se publica bajo CC0. Eres libre de copiar, modificar, distribuir y usar este trabajo para cualquier propósito, sin pedir permiso.

Apoya al Maker comprando productos a través de su Blueprint, donde gana una Comisión del Maker establecida por los vendedores, o crea una nueva iteración de este Blueprint e inclúyela como conexión en tu propio Blueprint para compartir ingresos.

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