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Sliding-Bar Air-Tube Dasher Churn: Churn Low, Then Raise the Bar and Turn Back to Gather
Millie

Yenziwe ngu-

Millie

7. uMfumfu 2026NL
35
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Sliding-Bar Air-Tube Dasher Churn: Churn Low, Then Raise the Bar and Turn Back to Gather

William H. Truesdell of Elgin, Illinois, received US 18,936, dated 22 December 1857, for a dasher bar that slides on the upright shaft, with an inclined board and an air tube at each end. It churns near the bottom; then it is raised to the surface and turned gently back, "the inclined boards forming chambers" to gather the butter. This rung prints the dasher bar, collar, step and gears, builds the churn and makes butter.
Ophakathi
About 4 hours, plus printing

Imiyalelo

1

Down to churn, up to gather

Ilayisha incwadi ye-Jupyter…
2

Lifting to gather, before it

Dickinson lifts his breakers to gather; Truesdell lifts the whole dasher bar to the surface.
3

Read US 18,936

"After the butter is produced, the bar D is raised to the surface, or nearly to the surface, of the cream and is supported in proper position by the pin (h) which is inserted in the shaft B below the collar (g). By turning the shaft B, gently in a reverse direction the butter will be collected, the inclined boards (i) forming chambers to receive it."
4

Print the parts

Print the dasher bar with its inclined boards, the collar, the step, the crown wheel, the pinion and the standard. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Izinto zokwakha zalesi sinyathelo:

Ifilamenti ye-PETGIfilamenti ye-PETG1 ucezu

Amathuluzi adingekayo:

Iphrinta ye-3D yentambo (i-FDM)Iphrinta ye-3D yentambo (i-FDM)
5

Print the dasher bar

The dasher bar, printed as step 4 describes.
Ifayela LomklamoSTLCC0 - Free
6

Print the collar

The collar, printed as step 4 describes.
Ifayela LomklamoSTLCC0 - Free
7

Print the step

The step, printed as step 4 describes.
Ifayela LomklamoSTLCC0 - Free
8

Print the crown wheel

The crown wheel, printed as step 4 describes.
Ifayela LomklamoSTLCC0 - Free
9

Print the pinion

The pinion, printed as step 4 describes.
Ifayela LomklamoSTLCC0 - Free
10

Print the standard

The standard, printed as step 4 describes.
Ifayela LomklamoSTLCC0 - Free
11

Bar, tubes and collar

Glue an 8 mm food-grade tube into each socket so its top stands above the cream, slightly inclined. Slide the bar onto a 10 mm square hardwood shaft standing in the step in a round food-grade container. Hang the bar from the collar by four 3 mm stainless rods, and drill the shaft for a pin under the collar at the churning and the gathering heights.

Izinto zokwakha zalesi sinyathelo:

Ipayipi Le-PVCIpayipi Le-PVC1 ucezu
I-epoxy Yezingxenye EzimbiliI-epoxy Yezingxenye Ezimbili1 ucezu
Izikhonkwane zokhuni oluqinileIzikhonkwane zokhuni oluqinile1 ucezu
Isitsha sokugcina sezinga lokudlaIsitsha sokugcina sezinga lokudla1 ucezu
Ubhamu Oluyindilinga Lwensimbi EthambileUbhamu Oluyindilinga Lwensimbi Ethambile1 ucezu

Amathuluzi adingekayo:

Isaha SensimbiIsaha Sensimbi
Ibhola ElingenantamboIbhola Elingenantambo
Iqoqo Lamakhanda EbholaIqoqo Lamakhanda Ebhola
12

Lid, gears and crank

Fix half the lid with a hole for the shaft, the pinion on its top and the standard with the crown wheel meshing it; screw a dowel handle into the wheel.

Izinto zokwakha zalesi sinyathelo:

Ubhamu Oluyindilinga Lwensimbi EthambileUbhamu Oluyindilinga Lwensimbi Ethambile1 ucezu
Izikhonkwane zokhuni oluqinileIzikhonkwane zokhuni oluqinile1 ucezu
Isikulufo sokhuni #8 x 1"Isikulufo sokhuni #8 x 1"1 ucezu

Amathuluzi adingekayo:

Isethi yezikulufudrayivaIsethi yezikulufudrayiva
Ibhola ElingenantamboIbhola Elingenantambo
13

The build in 3D

FreeCAD model of this build: the container cut away to show the dasher bar low on the shaft with its inclined boards and air tubes, the collar and rods above, and the crown wheel and pinion.
Ifayela LomklamoBLENDCC0 - Free
14

Churn low, gather high

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres. With the bar low, crank steadily; time until the butter comes. Raise the bar to the surface, pin the collar there, and crank gently the other way to gather the butter. 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.
Isinyathelo 14 - Image 1

Izinto zokwakha zalesi sinyathelo:

Ukhilimu ojiyileUkhilimu ojiyile2000 ml
Usawoti Wolwandle OmkhuluUsawoti Wolwandle Omkhulu1 ucezu
AmanziAmanzi1 ucezu

Amathuluzi adingekayo:

Ithemomitha enenaliti eshiywa ngaphakathiIthemomitha enenaliti eshiywa ngaphakathi
Iwashi Lokumisa IsikhathiIwashi Lokumisa Isikhathi
Isikali Sedijithali SasekhishiniIsikali Sedijithali Sasekhishini
Isitsha esikhulu sokuxuba sensimbi engagqwaliIsitsha esikhulu sokuxuba sensimbi engagqwali
15

Troubleshooting

Sliding-bar churn troubleshooting.

Flow

Loading...
16

History and honest limits

**William H. Truesdell** of Elgin, Kane County, Illinois, US 18,936, 22 December 1857. He did not claim bringing air into the cream, nor adjusting dashers broadly; he claimed the bar and its inclined boards that let air in turning one way and form chambers to gather the butter turning the other. Printed parts and a container stand in for his. FDM prints hold food in their layer lines, so wash well and replace when worn.

Izinto

10

Amathuluzi Adingekayo

9

Amafayela omklamo

7

CC0 Isizinda Somphakathi

Le blueprint ikhishwe ngaphansi kwe-CC0. Ukhululekile ukukopisha, ukuguqula, ukusabalalisa, nokusebenzisa ngaphandle kwemvume.

Sekela uMenzi ngokuthenga imikhiqizo nge-Blueprint yabo IKhomishane Yomenzi kumiswe ngabathengisi, noma dala inguqulo entsha yale Blueprint bese uyifaka njengoxhumaniso ku-Blueprint yakho ukuze wabelane ngemali engenayo.

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