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

Imeundwa na

Martin

6. Oktoba 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.
Juu
About 6 hours, plus printing

Maagizo

1

Strokes per minute

Inapakia daftari la Jupyter…
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.

Vifaa kwa hatua hii:

Uzi wa PETGUzi wa PETG1 kipande

Zana zinazohitajika:

Printa ya 3D ya nyuzi (FDM)Printa ya 3D ya nyuzi (FDM)
5

Print the notched wheel

The notched wheel, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
6

Print the connecting board

The connecting board, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
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.

Vifaa kwa hatua hii:

Ubao wa msonobariUbao wa msonobari1 kipande
Bati la mbao za kubandikaBati la mbao za kubandika1 kipande
Ufito wa chuma lainiUfito wa chuma laini1 kipande
Chombo cha kuhifadhi cha daraja la chakulaChombo cha kuhifadhi cha daraja la chakula1 kipande
Skrubu ya mti #8 x inchi 1Skrubu ya mti #8 x inchi 11 kipande

Zana zinazohitajika:

Msumeno wa mkonoMsumeno wa mkono
Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
Seti ya bisibisiSeti ya bisibisi
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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.

Vifaa kwa hatua hii:

Ufito wa chuma lainiUfito wa chuma laini1 kipande
Ubao wa msonobariUbao wa msonobari1 kipande
Bomba la PVCBomba la PVC1 kipande
Ukanda wa ngoziUkanda wa ngozi1 kipande
Skrubu za mashineSkrubu za mashine1 kipande
Nati ya pembe sitaNati ya pembe sita1 kipande
Epoksi ya Sehemu MbiliEpoksi ya Sehemu Mbili1 kipande

Zana zinazohitajika:

Msumeno wa chumaMsumeno wa chuma
Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
Spana inayoweza kurekebishwaSpana inayoweza kurekebishwa
9

The patent drawing

US 9,416, drawing sheet, public domain (expired patent).
Hatua 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.

Vifaa kwa hatua hii:

Malai nzitoMalai nzito2000 ml
Chumvi ya Bahari MbichiChumvi ya Bahari Mbichi1 kipande
MajiMaji1 kipande

Zana zinazohitajika:

Kipima joto chenye kijiti kinachobaki ndaniKipima joto chenye kijiti kinachobaki ndani
Saa ya kupima mudaSaa ya kupima muda
Mizani ya dijitali ya jikoniMizani ya dijitali ya jikoni
Bakuli kubwa la kuchanganyia la chuma cha puaBakuli kubwa la kuchanganyia la chuma cha pua
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.

Vifaa

14

Zana Zinazohitajika

11

Faili za muundo

2

Mchoro huu unatengeneza

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Pendulum Swing Dash Churn: Rock the Hanging Tank, the Dasher Works Itself

Pendulum Swing Dash Churn: Rock the Hanging Tank, the Dasher Works Itself

na MartinNO

CHAKULA NA VINYWAJI

33
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0
0
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Valved Hollow-Staff Plunger Churn: A Valve at the Top, Air Forced Out at the Foot

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

na TheChefDK

CHAKULA NA VINYWAJI

37
0
0
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Double-Swing Churn: Swing the Platform, the Toothed Pieces Work Both Dashers

Double-Swing Churn: Swing the Platform, the Toothed Pieces Work Both Dashers

na WoodyNO

Utengenezaji mbao

34
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0
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