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

Yaremwe na

Buttercup

11. Ugushyingo 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.
Hagati
About 2 days, plus printing

Amabwiriza

1

Held from above

Gupakira ikaye ya Jupyter…
2

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.
3

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.
Dosiye y'IgishushanyoSTLCC0 - Free
5

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.
Dosiye y'IgishushanyoSTLCC0 - Free
6

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.

Ibikoresho by'iyi ntambwe:

Indobo ya Litiro 20Indobo ya Litiro 201 igice
Ikibaho cy'Igiti GikomeyeIkibaho cy'Igiti Gikomeye2 ibice
Imisumari y'ibitiImisumari y'ibiti6 ibice
Igifunga cya silikoneIgifunga cya silikone1 igice

Ibikoresho bikenewe:

Umucumita wa JigsawUmucumita wa Jigsaw
Ikimasa cyo ku mezaIkimasa cyo ku meza
Agasanduku k'ibinyo bipfunyitseAgasanduku k'ibinyo bipfunyitse
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Ikusanyirizo ry'ibitoreziIkusanyirizo ry'ibitorezi
Umugozi wo GupimaUmugozi wo Gupima
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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.

Ibikoresho by'iyi ntambwe:

Ikibaho cy'Igiti GikomeyeIkibaho cy'Igiti Gikomeye1 igice
Ikinyabutabire cy'IbitiIkinyabutabire cy'Ibiti1 igice
Ifatanya ry'urugi rw'akabatiIfatanya ry'urugi rw'akabati1 igice
Inzitizi n'ijishoInzitizi n'ijisho1 igice
Imisumari y'ibitiImisumari y'ibiti4 ibice

Ibikoresho bikenewe:

Ikimasa cyo ku mezaIkimasa cyo ku meza
Ibikoresho by'amasuka y'igitiIbikoresho by'amasuka y'igiti
Igifashe cy'inkoniIgifashe cy'inkoni
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Agasanduku k'ibinyo bipfunyitseAgasanduku k'ibinyo bipfunyitse
Ikusanyirizo ry'ibitoreziIkusanyirizo ry'ibitorezi
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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.

Ibikoresho by'iyi ntambwe:

Udukoni tw'ibiti bikomeyeUdukoni tw'ibiti bikomeye2 ibice
Ikibaho cy'Igiti GikomeyeIkibaho cy'Igiti Gikomeye1 igice
Agati k'icyuma kitagira ingeseAgati k'icyuma kitagira ingese1 igice
Ikinyabutabire cy'IbitiIkinyabutabire cy'Ibiti1 igice
Igihimba cy'Igiti GikomeyeIgihimba cy'Igiti Gikomeye1 igice
Shaft CollarShaft Collar1 igice
Fibere ya PETGFibere ya PETG1 igice

Ibikoresho bikenewe:

Imashini icapa 3D ikoresha umugozi (FDM)Imashini icapa 3D ikoresha umugozi (FDM)
Ikimasa cyo ku mezaIkimasa cyo ku meza
Agasanduku k'ibinyo bipfunyitseAgasanduku k'ibinyo bipfunyitse
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Umucumita w'IbyumaUmucumita w'Ibyuma
Amakariso (Ikariso ry'Intoki)Amakariso (Ikariso ry'Intoki)
Urupapuro rwo GusyaUrupapuro rwo Gusya
9

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.

Ibikoresho by'iyi ntambwe:

Agati k'icyuma kitagira ingeseAgati k'icyuma kitagira ingese1 igice
Ikibaho cy'Igiti GikomeyeIkibaho cy'Igiti Gikomeye1 igice
Udukoni tw'ibiti bikomeyeUdukoni tw'ibiti bikomeye1 igice
Ikinyabutabire cy'IbitiIkinyabutabire cy'Ibiti1 igice
Shaft CollarShaft Collar1 igice
Agashinge gafite amaguru abiriAgashinge gafite amaguru abiri1 igice

Ibikoresho bikenewe:

Umucumita w'IbyumaUmucumita w'Ibyuma
Amakariso (Ikariso ry'Intoki)Amakariso (Ikariso ry'Intoki)
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Ifatiro ry'AmezaIfatiro ry'Ameza
10

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.
Dosiye y'IgishushanyoBLENDCC0 - Free
11

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.

Ibikoresho by'iyi ntambwe:

Igice cy'ibinure cy'amataIgice cy'ibinure cy'amata8 l
Umunyu w'inyanja muniniUmunyu w'inyanja munini1 igice
AmaziAmazi1 igice

Ibikoresho bikenewe:

Igipima ubushyuhe gifite uruti rusigara mu kintuIgipima ubushyuhe gifite uruti rusigara mu kintu
Isaha yo GuhagarikaIsaha yo Guhagarika
Iminzani ya Digitale yo mu GikoniIminzani ya Digitale yo mu Gikoni
Ibakure rinini ryo kuvanga ry'icyuma kitagira ingeseIbakure rinini ryo kuvanga ry'icyuma kitagira ingese
12

Troubleshooting

Hung-dasher churn troubleshooting.

Flow

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13

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.

Ibikoresho

16

Ibikoresho bikenewe

18

Dosiye z'igishushanyo

3

CC0 Umurenge rusange

Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.

Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.

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