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Double-Motion Dasher Churn: One Crank Spins One Dasher and Plunges the Other
English
Emma

Yenziwe ngu-

Emma

6. uMfumfu 2026SE
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Double-Motion Dasher Churn: One Crank Spins One Dasher and Plunges the Other

Hall combined "a vertical reciprocating-dasher with a horizontal rotary-dasher so as to break and agitate the cream in two directions at once." Alexander Hall of Loydsville, Ohio, received US 6,777, dated 9 October 1849, for a churn with a vertical spindle carrying a rotary dasher at its foot, turned by a bevel pinion and wheel from a horizontal driving shaft on the lid; a crank on the inner end of that shaft works, through a rod, a reciprocating dasher on a tubular stem sliding on the spindle, so "the currents produced by either dasher are broken and distorted by the other." This rung works out the two motions, then prints a crown wheel and lantern, the two dashers, builds the drive on a box lid, and makes butter.
Osezingeni eliphezulu
About 5 hours, plus printing

Imiyalelo

1

Two motions from one crank

Ilayisha incwadi ye-Jupyter…
2

Rotary and vertical motion together before it

The embedded blueprint gives one dasher both motions through a spiral slot. Hall gives each motion its own dasher, from one crank.
3

Read US 6,777

"The cream or milk is placed in the tub and power being applied to the driving shaft (c) a rapid rotary motion is communicated through the wheels c d to the dasher b while at the same time the upper dasher h receives a vertical reciprocating motion through the crank k and rod i."
4

Print the parts

Print the crown wheel with its pegs and crank pin, the lantern pinion, the rotary dasher, the perforated reciprocating dasher with its sleeve and the crank arm. 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 crown wheel

The crown wheel, printed as step 4 describes.
Ifayela LomklamoSTLCC0 - Free
6

Print the lantern

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

Print the rotary dasher

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

Print the reciprocating dasher

The reciprocating dasher, printed as step 4 describes.
Ifayela LomklamoSTLCC0 - Free
9

Print the crank arm

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

Spindle and dashers

Glue the rotary dasher on the foot of a 10 mm square hardwood spindle and stand it in a seat drilled in the centre of a food-safe box's floor. Slide a 16 mm tube over the spindle as the stem, glue the reciprocating dasher's sleeve on its lower end, and glue the lantern on the spindle's top above the lid.

Izinto zokwakha zalesi sinyathelo:

Isitsha sokugcina sezinga lokudlaIsitsha sokugcina sezinga lokudla1 ucezu
Izikhonkwane zokhuni oluqinileIzikhonkwane zokhuni oluqinile1 ucezu
Ipayipi Le-PVCIpayipi Le-PVC1 ucezu
Iglu LokhuniIglu Lokhuni1 ucezu

Amathuluzi adingekayo:

Ibhola ElingenantamboIbhola Elingenantambo
Iqoqo Lamakhanda EbholaIqoqo Lamakhanda Ebhola
Isaha SensimbiIsaha Sensimbi
11

Drive on the lid

Screw two pine standards to a plywood half-lid and pass a 10 mm square driving shaft through them, with the crown wheel on its inner end meshing the lantern and the crank arm on its outer end. Join the crown wheel's crank pin to the stem's top with a pine rod on screws.

Izinto zokwakha zalesi sinyathelo:

Ishidi le-plywoodIshidi le-plywood1 ucezu
Ipulangwe lomphayiniIpulangwe lomphayini1 ucezu
Izikhonkwane zokhuni oluqinileIzikhonkwane zokhuni oluqinile1 ucezu
Izikulufu zomshiniIzikulufu zomshini1 ucezu
Inathi Yezinhlangothi EziyisithuphaInathi Yezinhlangothi Eziyisithupha1 ucezu
Isikulufo sokhuni #8 x 1"Isikulufo sokhuni #8 x 1"1 ucezu

Amathuluzi adingekayo:

Isaha SesandlaIsaha Sesandla
Ibhola ElingenantamboIbhola Elingenantambo
Iqoqo Lamakhanda EbholaIqoqo Lamakhanda Ebhola
Isethi yezikulufudrayivaIsethi yezikulufudrayiva
Isipanela esilungisekayoIsipanela esilungisekayo
12

The build in 3D

FreeCAD model of this build, not of the patent: the box cut away to show the rotary dasher at the spindle's foot and the perforated dasher on its sliding stem, and on the lid the crown wheel and lantern, the rod and the crank.
Ifayela LomklamoBLENDCC0 - Free
13

Crank and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres. Crank steadily; 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.
Isinyathelo 13 - 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
14

Gears that skip, a stem that binds

Double-motion dasher churn troubleshooting.

Flow

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15

History and honest limits

**Alexander Hall** of Loydsville, Belmont County, Ohio, received US 6,777, dated 9 October 1849, signed 7 August 1849. The spindle could be stepped in the bottom with a bearing in the top, or hung from the top alone; and by putting the pinion on the tubular stem instead, the upper dasher could revolve and the lower reciprocate. He claimed "the combination of a reciprocating dasher with a revolving dasher." **Honest limits.** A pegged crown wheel and lantern pinion stand in for his bevel wheels; a food-safe box and printed dashers for his tub and dashers. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Izinto

13

Amathuluzi Adingekayo

11

Amafayela omklamo

6

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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