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Spring-Return Rocking Churn: Springs Under Each End Lift the Low One Back
Daniel F. Hitt, Galena, Illinois · Public domain (expired patent)
Karen

Nilikha ni

Karen

6. Oktubre 2026SE
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Spring-Return Rocking Churn: Springs Under Each End Lift the Low One Back

In a rocking churn the cream runs from end to end, and its weight makes each return stroke hard work. Daniel F. Hitt of Galena, Illinois, received US 2,800, dated 7 October 1842, for a churn whose body rocks on gudgeons at its middle, with a spring under each end connected to the body by a strap, cord or chain. As the cream "runs from end to end of the containing vessel, it acquires a momentum"; "by means of the reaction of the springs, the momentum thus acquired is rendered available in obtaining the return motion." A perforated diaphragm across the middle lets the cream through on its way. This rung estimates the spring force, then prints the diaphragm and gudgeon bosses, bows two spring-steel strips under a rocking box, and makes butter.
Katamtaman
About 5 hours, plus printing

Mga Tagubilin

1

Cream's moment and spring force

Naglo-load ng Jupyter notebook…
2

A rocking churn before it

The embedded blueprint rocks a churn on a stool. Hitt hangs his on gudgeons and adds springs to help it back.
3

Read US 2,800

"I am aware that there is not any actual gain of power in the employment of springs in the manner designated, and they are not, therefore, used with any such view; but as the cream runs from end to end of the containing vessel, it acquires a momentum which would render the continuance of the rocking motion under the foregoing manner of suspending the containing vessel, one of much difficulty."
4

Print the parts

Print the perforated diaphragm flat (/uploads/blueprints/spring-return-rocking-churn-diaphragm.stl), two diaphragm guides (/uploads/blueprints/spring-return-rocking-churn-diaphragm-guide.stl) and two gudgeon bosses (/uploads/blueprints/spring-return-rocking-churn-gudgeon-boss.stl). 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

The rocking box

Take a food-safe box about 300 × 150 × 140 mm with a lid. Screw a guide inside each long side at the middle and slide the diaphragm into them, so it lifts out for washing as his did on buttons. Screw a gudgeon boss to the outside of each long side at the middle, and fit an M8 bolt through each as a gudgeon. Fix a dowel handle to one end.

Mga materyales para sa hakbang na ito:

Sisidlan ng imbakan na antas pagkainSisidlan ng imbakan na antas pagkain1 piraso
Mga turnilyo ng makinaMga turnilyo ng makina1 piraso
Tuerkang HeksagonalTuerkang Heksagonal1 piraso
Mga tarugong matigas na kahoyMga tarugong matigas na kahoy1 piraso
Turnilyong pangkahoy #8 x 1"Turnilyong pangkahoy #8 x 1"1 piraso

Mga kailangang kasangkapan:

Walang-Kableng BarenaWalang-Kableng Barena
Hanay ng Talim ng BarenaHanay ng Talim ng Barena
Set ng mga distornilyadorSet ng mga distornilyador
Llaveng inglesLlaveng ingles
6

Frame, springs and cords

Build a pine base with two braced posts drilled for the gudgeons, so the box swings clear. Screw a spring-steel strip to the base under each end, bowed up so its tip stands just below the box when the box is level. Tie each tip to the box's end with a cord, leaving a little slack.

Mga materyales para sa hakbang na ito:

Tablang pinoTablang pino1 piraso
Guhit na bakal na muwelyeGuhit na bakal na muwelye1 piraso
ParacordParacord1 piraso
Turnilyong pangkahoy #8 x 1"Turnilyong pangkahoy #8 x 1"1 piraso
Pandikit sa KahoyPandikit sa Kahoy1 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
Gunting na pangyeroGunting na pangyero
Mga clampMga clamp
7

The patent drawing

US 2,800 drawing sheet, public domain (expired patent).
Hakbang 7 - Image 1
8

Rock and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 1 litre and fit the lid. Rock the box by its handle, letting the springs lift each end back; 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 krema1000 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

A box that sticks down, springs that slap

Spring-return rocking churn troubleshooting.

Flow

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10

History and honest limits

**Daniel F. Hitt** of Galena, Jo Daviess County, Illinois, received US 2,800, dated 7 October 1842. His body could be a trunk, box or cylinder; one end was removable, held "by wedges, screws, or otherwise"; the springs "may be varied in form, and may be made either of wood, or of metal." He did not claim the rocking churn or the suspension on gudgeons, both already used, but the manner of combining the springs with a churn that vibrates on gudgeons. **Honest limits.** A food-safe box and spring-steel strips stand in for his body and springs. The notebook's moment is an estimate, not a measurement. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Mga Materyales

13

Mga Kinakailangang Kasangkapan

12

Ang blueprint na ito ay gumagawa ng

Thumbnail
Placeholder

Panghalo ng mantikilya

Free

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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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