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

Nilikha ni

Martin

6. Oktubre 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.
Abantado
About 6 hours, plus printing

Mga Tagubilin

1

Strokes per minute

Naglo-load ng Jupyter notebook…
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 (/uploads/blueprints/double-acting-swing-dash-churn-notched-wheel.stl) and the connecting board with its slot and two pins (/uploads/blueprints/double-acting-swing-dash-churn-connecting-board.stl). 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.

Mga materyales para sa hakbang na ito:

PETG filamentPETG filament1 piraso

Mga kailangang kasangkapan:

Limbagang 3D na FDMLimbagang 3D na FDM
5

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.

Mga materyales para sa hakbang na ito:

Tablang pinoTablang pino1 piraso
Plantsa ng playwudPlantsa ng playwud1 piraso
Bilog na Bara ng Malambot na AseroBilog na Bara ng Malambot na Asero1 piraso
Sisidlan ng imbakan na antas pagkainSisidlan ng imbakan na antas pagkain1 piraso
Turnilyong pangkahoy #8 x 1"Turnilyong pangkahoy #8 x 1"1 piraso

Mga kailangang kasangkapan:

Lagaring PangkamayLagaring Pangkamay
Walang-Kableng BarenaWalang-Kableng Barena
Hanay ng Talim ng BarenaHanay ng Talim ng Barena
Set ng mga distornilyadorSet ng mga distornilyador
6

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.

Mga materyales para sa hakbang na ito:

Bilog na Bara ng Malambot na AseroBilog na Bara ng Malambot na Asero1 piraso
Tablang pinoTablang pino1 piraso
Tubong PVCTubong PVC1 piraso
Guhit na balatGuhit na balat1 piraso
Mga turnilyo ng makinaMga turnilyo ng makina1 piraso
Tuerkang HeksagonalTuerkang Heksagonal1 piraso
Epoksing dalawang bahagiEpoksing dalawang bahagi1 piraso

Mga kailangang kasangkapan:

Lagaring Pang-metalLagaring Pang-metal
Walang-Kableng BarenaWalang-Kableng Barena
Hanay ng Talim ng BarenaHanay ng Talim ng Barena
Llaveng inglesLlaveng ingles
7

The patent drawing

US 9,416, drawing sheet, public domain (expired patent).
Hakbang 7 - Image 1
8

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.

Mga materyales para sa hakbang na ito:

Makapal na kremaMakapal na krema2000 ml
Magaspang na Asin sa DagatMagaspang na Asin sa Dagat1 piraso
TubigTubig1 piraso

Mga kailangang kasangkapan:

Termometro na naiiwang nakatusokTermometro na naiiwang nakatusok
Panukat ng OrasPanukat ng Oras
Digital na Timbangang PangkusinaDigital na Timbangang Pangkusina
Malaking mangkok na panghalo na asero na hindi kinakalawangMalaking mangkok na panghalo na asero na hindi kinakalawang
9

Pins that miss, a dash that sticks

Double-acting swing dash troubleshooting.

Flow

Loading...
10

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.

Mga Materyales

14

Mga Kinakailangang Kasangkapan

11

Ang blueprint na ito ay gumagawa ng

Thumbnail
Placeholder

Panghalo ng mantikilya

Free

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Kaugnay na Blueprint

Ang mga blueprint na ito ay nagbabahagi ng kaalaman — mga teknik, materyales, o prinsipyo

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

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

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

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ni WoodyNO

Paggawa ng Kahoy

33
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0

CC0 Pampublikong Domain

Ang blueprint na ito ay inilabas sa ilalim ng CC0. Malaya kang kumopya, magbago, mamahagi, at gumamit nang walang pahintulot.

Suportahan ang Maker sa pamamagitan ng pagbili ng mga produkto sa kanilang Blueprint Komisyon ng Maker itinakda ng mga Vendor, o lumikha ng bagong bersyon ng Blueprint na ito at isama bilang koneksyon sa iyong Blueprint upang ibahagi ang kita.

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