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Hung-Dasher Churn: The Dasher Hangs in a Long Hinged Journal Box Above the Lid, No Step in the Tub
Jehu Mitchell · Public domain
Buttercup

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Buttercup

11. Novemba 2026IE
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Hung-Dasher Churn: The Dasher Hangs in a Long Hinged Journal Box Above the Lid, No Step in the Tub

Jehu Mitchell of Aleppo township, Pennsylvania, received US 27,927, dated 17 April 1860, for a churn. The dasher hangs from above in a long journal box on a standard fixed to the lid, with no step or metal bearing in the tub, whose "oxidation ... imparts a bad flavor to the butter". One half of the box is a cap hinged at one side: lift out half the lid, unhook the cap and the dasher comes out with the gearing left in place. The patent gives no sizes; every size here is ours.
Kati
About 2 days, plus printing

Maagizo

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Held from above

Inapakia daftari la Jupyter…
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A crank-turned upright dasher, one week before

Lynch's shaft stands in a step on the bottom. Mitchell hangs his from above, with nothing in the tub.
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Read US 27,927

"Suspending the dasher within an elongated hinged journal box in the manner described, combined the following advantages. A rigid bearing is afforded to the dasher so as to prevent any tremulous motion, without the necessity of any metallic step or bearing within the churn, the oxidation of which imparts a bad flavor to the butter."
4

Print the driving wheel E

Crown wheel, 36 teeth on its face, module 2, with a hub; bored 12.4 mm. PETG, 0.2 mm layers, 40 % infill, 4 walls.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
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Print the pinion M

Spur pinion, 12 teeth, module 2, with a hub; bored 12.4 mm. PETG, 0.2 mm layers, 40 % infill, 4 walls.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
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Lid B and C, brakes O

Cut a hardwood lid 15 mm thick to sit on the bucket's rim and saw it in two across the middle: part C carries the standard, part B lifts out. Cut a 28 mm half-hole in the middle of the cut edge for the shaft and a 30 mm hole in B to look in. Screw three hardwood brakes O, 30 mm deep and 245 tall, to the bucket's side a third of a turn apart, and seal the screw holes outside with silicone.

Vifaa kwa hatua hii:

Ndoo ya Lita 20Ndoo ya Lita 201 kipande
Ubao wa Mti MgumuUbao wa Mti Mgumu2 vipande
Parafujo za mbaoParafujo za mbao6 vipande
Kizibo cha SilikoniKizibo cha Silikoni1 kipande

Zana zinazohitajika:

Msumeno wa KupindaMsumeno wa Kupinda
Msumeno wa mezaMsumeno wa meza
Seti ya vichwa bapa vya kutoboaSeti ya vichwa bapa vya kutoboa
Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
Seti ya bisibisiSeti ya bisibisi
Tepi ya kupimiaTepi ya kupimia
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Standard D, journal box and cap G

Glue up a hardwood standard 60 mm wide and 66 deep, 111 mm tall above the lid, with its back 22 mm rising to 217 mm and bored 12.6 mm across near the top for the wheel's axle. Mortise it into lid part C behind the shaft's hole. Cut a cap G 60 x 30 mm, 111 tall, and bore a 25.2 mm hole down the joint between standard and cap, half in each. Hang the cap on a butt hinge at one side and fit a hook H and eye I on the other.

Vifaa kwa hatua hii:

Ubao wa Mti MgumuUbao wa Mti Mgumu1 kipande
Gundi ya MbaoGundi ya Mbao1 kipande
Bawaba ya kabatiBawaba ya kabati1 kipande
Ndoano na jichoNdoano na jicho1 kipande
Parafujo za mbaoParafujo za mbao4 vipande

Zana zinazohitajika:

Msumeno wa mezaMsumeno wa meza
Seti ya patasi za mtiSeti ya patasi za mti
Kibano cha upauKibano cha upau
Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
Seti ya vichwa bapa vya kutoboaSeti ya vichwa bapa vya kutoboa
Seti ya bisibisiSeti ya bisibisi
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Dasher J with wings N and collars K and L

Cut a 25 mm hardwood dowel 485 mm long and glue a 12 mm stainless spindle into its top, standing 56 mm out. Glue two hardwood wings 200 x 60 x 20 mm across it, 20 and 140 mm above its foot, each bored with two 24 mm holes. Fit a hardwood collar L 44 mm across just below the lid, and a collar K 40 mm across on the spindle resting on the box's top. Set the shaft in the box, close the cap, and key the pinion M on the spindle above K.

Vifaa kwa hatua hii:

Vijiti vya mbao ngumuVijiti vya mbao ngumu2 vipande
Ubao wa Mti MgumuUbao wa Mti Mgumu1 kipande
Fimbo ya chuma cha puaFimbo ya chuma cha pua1 kipande
Gundi ya MbaoGundi ya Mbao1 kipande
Kipande cha mbao ngumuKipande cha mbao ngumu1 kipande
Shaft CollarShaft Collar1 kipande
Uzi wa PETGUzi wa PETG1 kipande

Zana zinazohitajika:

Printa ya 3D ya nyuzi (FDM)Printa ya 3D ya nyuzi (FDM)
Msumeno wa mezaMsumeno wa meza
Seti ya vichwa bapa vya kutoboaSeti ya vichwa bapa vya kutoboa
Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
Msumeno wa chumaMsumeno wa chuma
Tupa (Tupa ya Mkono)Tupa (Tupa ya Mkono)
Sandarusi (karatasi ya kusugua)Sandarusi (karatasi ya kusugua)
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Driving wheel E and crank

Pass a 12 mm stainless axle through the standard's back, fit the wheel E on it meshing the pinion, and a hardwood crank with a dowel handle on the other end; hold it with a collar and split pin.

Vifaa kwa hatua hii:

Fimbo ya chuma cha puaFimbo ya chuma cha pua1 kipande
Ubao wa Mti MgumuUbao wa Mti Mgumu1 kipande
Vijiti vya mbao ngumuVijiti vya mbao ngumu1 kipande
Gundi ya MbaoGundi ya Mbao1 kipande
Shaft CollarShaft Collar1 kipande
Pini iliyopasuliwaPini iliyopasuliwa1 kipande

Zana zinazohitajika:

Msumeno wa chumaMsumeno wa chuma
Tupa (Tupa ya Mkono)Tupa (Tupa ya Mkono)
Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
Kibano cha meza ya kaziKibano cha meza ya kazi
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The build in 3D

FreeCAD model of this build, the bucket cut open: the dasher J with its two wings hanging from the journal box, the brakes O, the lid, the standard D with its hinged cap G, hook and eye, and the wheel E with pinion M.
Faili ya UsanifuBLENDCC0 - Free
Pakua modeli
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Churn

Pour about 8 litres of heavy cream at about 15 °C, checked with the thermometer, into the bucket, set the lid and dasher in place, and turn the crank steadily, timing it. To look at the butter, lift out lid part B. When the butter comes, lift part B out, unhook the cap and take the dasher out, take out the butter, pour the buttermilk into a bowl, wash the butter in cold water until it runs clear, salt and weigh it.

Vifaa kwa hatua hii:

Malai nzitoMalai nzito8 l
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
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Troubleshooting

Hung-dasher churn troubleshooting.

Flow

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History and honest limits

**Jehu Mitchell** of Aleppo township, Greene County, Pennsylvania, US 27,927, 17 April 1860, "Churn". He did not claim a churn without a bottom step nor a hinged bearing alone, but the gearing, standard, hinged cap, dasher and collar together. His journal box runs higher; ours stops below the crown wheel. His wings and brakes are "of common construction"; our two wings and three brakes, and every size, are ours.

Vifaa

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Zana Zinazohitajika

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Faili za muundo

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