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Double-Acting Swing Dash Churn: Two Dasher Strokes From Every Swing
Martin

Erstellt von

Martin

6. Oktober 2026NO
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Double-Acting Swing Dash Churn: Two Dasher Strokes From Every Swing

The Davises doubled the work a swinging churn gets from each swing. William F. Davis and Nathan Davis of Castleton, Vermont, received US 9,416, dated 23 November 1852, for "The Oscillating Double-Acting Dash-Churn": a tank hung in a pendulum frame between standards three and a half feet long; a connecting board pinned to one pendulum bar, slotted to slide on the rock shaft, carrying two pins that enter two opposite notches in a wheel fixed to the rock shaft; and a lever from the rock shaft to a hollow dash stick with a valve "for the purpose of preventing a vacuum underneath the dash." This rung works out the strokes, then prints the notched wheel and connecting board, builds the frame and swing, and makes butter.
Erfahren
About 6 hours, plus printing

Anweisungen

1

Strokes per minute

Jupyter-Notebook wird geladen …
2

The swing churn it doubles

The embedded blueprint gives one dasher stroke per swing through a bent lever. The Davises' notched wheel and two-pinned board give two.
3

Read US 9,416

"As the swing moves from the center toward the left and back the upper pin leaves the upper notch and the lower pin enters its respective notch, producing substantially the same result as when the upper pin entered the upper notch and passed toward the right and back. Thus we produce two complete motions of the dash from one full oscillation of the pendulum bars."
4

Print the parts

Print the notched wheel and the connecting board with its slot and two pins. Reuse the dasher and valve plug from the pendulum swing dash churn if you have them. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Materialien für diesen Schritt:

PETG-FilamentPETG-Filament1 Stück

Benötigte Werkzeuge:

FDM-3D-DruckerFDM-3D-Drucker
5

Print the notched wheel

The notched wheel, printed as step 4 describes.
DesigndateiSTLCC0 - Free
Modell herunterladen
6

Print the connecting board

The connecting board, printed as step 4 describes.
DesigndateiSTLCC0 - Free
Modell herunterladen
7

Frame and swing

Build two pine A-frames about 520 mm tall joined at the top, with diagonal cross pieces carrying the rock shaft, and hang a swing of two pine bars and a plywood board from a rod at the top. Stand a straight-sided food-grade container on the board as the tank.

Materialien für diesen Schritt:

KiefernbrettKiefernbrett1 Stück
SperrholzplatteSperrholzplatte1 Stück
Rundstahl (Baustahl)Rundstahl (Baustahl)1 Stück
Vorratsbehälter in LebensmittelqualitätVorratsbehälter in Lebensmittelqualität1 Stück
Holzschraube #8 x 1"Holzschraube #8 x 1"1 Stück

Benötigte Werkzeuge:

HandsägeHandsäge
AkkubohrschrauberAkkubohrschrauber
BohrersatzBohrersatz
Schraubendreher-SatzSchraubendreher-Satz
8

Wheel, board, lever and dash

Fix the notched wheel on a 12 mm steel rock shaft. Pin the connecting board to one swing bar, its slot over the shaft, so its pins meet the notches. Fix a pine lever to the rock shaft and pin its end to a hollow 18 mm food-grade tube dash stick with a leather flap valve near its top and a perforated dasher at its foot.

Materialien für diesen Schritt:

Rundstahl (Baustahl)Rundstahl (Baustahl)1 Stück
KiefernbrettKiefernbrett1 Stück
PVC-RohrPVC-Rohr1 Stück
LederstreifenLederstreifen1 Stück
MaschinenschraubenMaschinenschrauben1 Stück
SechskantmutterSechskantmutter1 Stück
ZweikomponentenepoxidZweikomponentenepoxid1 Stück

Benötigte Werkzeuge:

Bügelsäge (Metallsäge)Bügelsäge (Metallsäge)
AkkubohrschrauberAkkubohrschrauber
BohrersatzBohrersatz
RollgabelschlüsselRollgabelschlüssel
9

The patent drawing

US 9,416, drawing sheet, public domain (expired patent).
Schritt 9 - Image 1
10

Swing and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres. Swing the tank steadily; the dasher strokes twice each full swing. 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.

Materialien für diesen Schritt:

SchlagsahneSchlagsahne2000 ml
Grobes MeersalzGrobes Meersalz1 Stück
WasserWasser1 Stück

Benötigte Werkzeuge:

Einsteck-FühlerthermometerEinsteck-Fühlerthermometer
StoppuhrStoppuhr
Digitale KüchenwaageDigitale Küchenwaage
Große Rührschüssel aus EdelstahlGroße Rührschüssel aus Edelstahl
11

Pins that miss, a dash that sticks

Double-acting swing dash troubleshooting.

Flow

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12

History and honest limits

**William F. Davis and Nathan Davis** of Castleton, Rutland County, Vermont, received US 9,416, dated 23 November 1852. Their standards were 2 by 1 inches, 3½ feet long, spread three feet at the bottom, pairs 15 inches apart; the swing board was 13 by 14 inches; the dash stick's hole was ⅝ inch. They claimed the combination of the swing, slotted board, wheel, rock shaft and lever producing two motions of the dash from one oscillation. **Honest limits.** A smaller frame, a container and printed parts stand in for theirs; their swing length is estimated. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Materialien

14

Benötigte Werkzeuge

11

Designdateien

2

Dieser Bauplan stellt her

Thumbnail
Platzhalter

Butterfass

Free

19
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CC0 Gemeinfrei

Dieser Blueprint ist unter CC0 veröffentlicht. Sie dürfen dieses Werk für jeden Zweck frei kopieren, ändern, verbreiten und verwenden, ohne um Erlaubnis zu fragen.

Unterstützen Sie den Maker, indem Sie Produkte über seinen Blueprint kaufen, wo er eine Maker-Provision von Anbietern festgelegt, verdient. Oder erstellen Sie eine neue Iteration dieses Blueprints und verbinden Sie ihn in Ihrem eigenen Blueprint, um Einnahmen zu teilen.

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