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Pinwheel Air-Tube Churn: A Beater Cut From One Tin Sheet, Tubes That Feed the Wave
Simeon F. Emerson, Canaan, Ohio · Public domain (expired patent)
YourGrandma

Creato da

YourGrandma

6. ottobre 2026IS
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Pinwheel Air-Tube Churn: A Beater Cut From One Tin Sheet, Tubes That Feed the Wave

Emerson wanted a dasher "which unites simplicity with efficiency." Simeon F. Emerson of Canaan, Ohio, received US 7,236, dated 2 April 1850, for an atmospheric churn in a square box whose cover is in two pieces, one removable to inspect the cream. The beater is a squared sheet of tin plate "slit from each of the corners toward the center of the sheet for rather more than half the distance," every other corner turned in, on an upright spindle turned by a crank and wheel. "Inclined tubes, d, are secured to the sides of the churn tub; these incline forward, as they descend, in the direction in which the dasher is revolved." This rung works out the cuts, then makes the beater from stainless sheet with a printed template (or prints it), fits inclined tubes in a box, and makes butter.
Principiante
About 2 hours, plus printing

Istruzioni

1

The cuts

Caricamento del notebook Jupyter…
2

Air fed into the whirl before it

The embedded blueprint lets the whirl bring air into a cone. Emerson breaks the whirl with tubes on the walls that feed air into its wave.
3

Read US 7,236

"A squared sheet of tin plate or other metal is slit from each of the corners toward the center of the sheet for rather more than half the distance from the corner to the center. Every other one of the eight corners thus produced is turned inward toward the center of the sheet, and the four are united there thus forming a beater B, with four arms."
4

Make the beater

Print the template (/uploads/blueprints/pinwheel-air-tube-churn-sheet-template.stl), lay it on a 150 mm square of 0.5 mm stainless sheet, mark the four slits and the centre hole, and cut them with snips and a drill. Deburr, then bend every other point in toward the centre and rivet or bolt the four together through a hole, as he united them. Or print the finished pinwheel (/uploads/blueprints/pinwheel-air-tube-churn-printed-beater.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Materiali per questo passaggio:

Lamiera di acciaio inossidabile - 304Lamiera di acciaio inossidabile - 3041 pezzo
Viti da metalloViti da metallo1 pezzo
Dado esagonaleDado esagonale1 pezzo
Filamento PETGFilamento PETG1 pezzo

Strumenti necessari:

Cesoie da lattoniereCesoie da lattoniere
SbavatoreSbavatore
Trapano a batteriaTrapano a batteria
Serie di punte da trapanoSerie di punte da trapano
Stampante 3D a filamento (FDM)Stampante 3D a filamento (FDM)
5

Tubes on the sides

Print six tube clips (/uploads/blueprints/pinwheel-air-tube-churn-tube-clip.stl). Cut three 200 mm lengths of 16 mm food-grade tube and clip one to each of three sides of a food-safe square box, open at both ends, leaning about 18° forward as they go down in the direction the beater will turn.

Materiali per questo passaggio:

Tubo in PVCTubo in PVC1 pezzo
Contenitore di conservazione per uso alimentareContenitore di conservazione per uso alimentare1 pezzo
Vite da legno #8 x 1"Vite da legno #8 x 1"1 pezzo

Strumenti necessari:

Seghetto per metalliSeghetto per metalli
Set di cacciavitiSet di cacciaviti
6

Spindle and crank

Fix the beater near the foot of a 10 mm square hardwood spindle and stand it in a seat drilled in the box's floor. Cut a two-piece plywood lid, one piece removable, with a hole for the spindle; glue a crank arm and handle on top.

Materiali per questo passaggio:

Tasselli di legno duroTasselli di legno duro1 pezzo
Pannello di compensatoPannello di compensato1 pezzo
Colla da legnoColla da legno1 pezzo

Strumenti necessari:

Sega a manoSega a mano
Sega da traforoSega da traforo
Trapano a batteriaTrapano a batteria
7

The build in 3D

FreeCAD model of this build, not of the patent: the box cut away to show the four-armed pinwheel beater on its spindle and the inclined air tubes on its sides.
File di designBLENDCC0 - Free
Scarica modello
8

Crank and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres, below the tubes' tops. Crank steadily the way the tubes lean; 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.
Passo 8 - Image 1

Materiali per questo passaggio:

Panna da montarePanna da montare2000 ml
Sale marino grossoSale marino grosso1 pezzo
AcquaAcqua1 pezzo

Strumenti necessari:

Termometro a sonda permanenteTermometro a sonda permanente
CronometroCronometro
Bilancia digitale da cucinaBilancia digitale da cucina
Grande ciotola da impasto in acciaio inossidabileGrande ciotola da impasto in acciaio inossidabile
9

Cream up the tubes, a beater that bends

Pinwheel air-tube churn troubleshooting.

Flow

Loading...
10

History and honest limits

**Simeon F. Emerson** of Canaan, Wayne County, Ohio, received US 7,236, dated 2 April 1850. The spindle was stepped in the tub's bottom and turned through a wheel and crank on the cover; the parts could be of "such materials as the manufacturer may deem best suited" for "efficiency, cheapness, and facility for cleaning." He claimed the combination of the dasher with the stationary inclined air channels on the churn tub. **Honest limits.** Stainless sheet stands in for his tin plate; our crank turns the spindle directly. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Materiali

13

Strumenti richiesti

13

File di progetto

1

Questo progetto realizza

Thumbnail
Segnaposto

Zangola

Free

19
0

Blueprint correlati

Questi blueprint condividono conoscenze — tecniche, materiali o principi

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CC0 Pubblico dominio

Questo progetto è rilasciato sotto CC0. Sei libero di copiare, modificare, distribuire e utilizzare quest'opera per qualsiasi scopo, senza chiedere permesso.

Supporta il Maker acquistando prodotti tramite il suo progetto dove guadagna una Commissione Maker stabilita dai venditori, oppure crea una nuova iterazione di questo progetto e includilo come collegamento nel tuo progetto per condividere i ricavi.

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