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Spiral-Wing Spheroid Churn: A Ball Dasher on Balls Turns Freely on Its Rod, Its Spiral Wings Spinning It Each Stroke
Buttercup

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Buttercup

11. Ugushyingo 2026IE
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Spiral-Wing Spheroid Churn: A Ball Dasher on Balls Turns Freely on Its Rod, Its Spiral Wings Spinning It Each Stroke

Otis W. Stanford of Cincinnati received US 28,696, dated 12 June 1860, for a churn. On the foot of an ordinary up-and-down dash rod he hangs a round or egg-shaped wooden dasher that turns freely on balls, with spiral wings nearly touching the tub's sides. As the rod is worked, the cream spins the dasher one way then the other; the cream is squeezed between the wings and the wall, and air trapped under the round body is carried into it. The patent gives no sizes; every size here is ours.
Hagati
About 1 day, plus printing

Amabwiriza

1

How far the dasher turns each stroke

Gupakira ikaye ya Jupyter…
2

A dash that turns as it is driven, one week before

Ross's pitched blades turn the dash and handle on a swivel. Stanford's spiral wings turn the dasher alone, on balls.
3

Read US 28,696

"The rod C being reciprocated, as in the common churn, the inertia of the fluid acts to swiftly rotate the dasher in successively opposite directions and this reacting upon the liquid imparts to the latter a quick succession of opposite vertical movements resulting in violent agitation."
4

Print the dasher's upper half

Upper half of the spheroid, 150 mm across and 80 tall, with the upper halves of three spiral wings reaching 116 mm; bored 12.8 mm with a 32 mm recess for the upper ring of balls. PETG, 0.2 mm layers, 30 % infill, 4 walls.
Dosiye y'IgishushanyoSTLCC0 - Free
5

Print the dasher's lower half

Lower half, printed upside down, with the lower halves of the wings and the recess for the lower ring of balls. PETG, 0.2 mm layers, 30 % infill, 4 walls.
Dosiye y'IgishushanyoSTLCC0 - Free
6

Lid B with boss b

Turn a hardwood lid to fit the bucket's rim, 20 mm thick, with a boss 60 mm across and 140 mm tall in the middle, bored 26 mm through as the guide for the rod.

Ibikoresho by'iyi ntambwe:

Ikibaho cy'Igiti GikomeyeIkibaho cy'Igiti Gikomeye1 igice
Ikinyabutabire cy'IbitiIkinyabutabire cy'Ibiti1 igice

Ibikoresho bikenewe:

Imashini ikerekeza ibitiImashini ikerekeza ibiti
Agasanduku k'ibinyo bipfunyitseAgasanduku k'ibinyo bipfunyitse
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Urupapuro rwo GusyaUrupapuro rwo Gusya
7

Rod C, dasher D, balls G, screw E and washer F

Cut a 25 mm hardwood rod 500 mm long and glue a 12 mm stainless spindle 170 mm long into its foot. Glue the two printed halves together with the wings lined up. Slide on a ring of 6 mm stainless balls in the upper recess, the dasher, and a second ring in the lower recess, and hold them with a stainless washer and a machine screw into the spindle's end. The dasher must spin freely.

Ibikoresho by'iyi ntambwe:

Udukoni tw'ibiti bikomeyeUdukoni tw'ibiti bikomeye1 igice
Agati k'icyuma kitagira ingeseAgati k'icyuma kitagira ingese1 igice
Ikinyabutabire cy'IbitiIkinyabutabire cy'Ibiti1 igice
Ibiziga by'utubuyeIbiziga by'utubuye20 ibice
Ibitorezo by'imashiniIbitorezo by'imashini1 igice
Fibere ya PETGFibere ya PETG1 igice

Ibikoresho bikenewe:

Imashini icapa 3D ikoresha umugozi (FDM)Imashini icapa 3D ikoresha umugozi (FDM)
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
Ikusanyirizo ry'ibitoreziIkusanyirizo ry'ibitorezi
8

The build in 3D

FreeCAD model of this build, the bucket and lid cut open: the rod through the boss, the spheroid dasher with its three spiral wings on its two rings of balls, held by the washer.
Dosiye y'IgishushanyoBLENDCC0 - Free
9

Churn

Pour about 6 litres of heavy cream at about 15 °C, checked with the thermometer, into the bucket, set the dasher in and put on the lid over the rod. Work the rod up and down about 150 mm, steadily, timing it; the dasher turns one way and back. When the butter comes, lift the lid and 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'amata6 l
Umunyu w'inyanja muniniUmunyu w'inyanja munini1 igice
AmaziAmazi1 igice
Indobo ya Litiro 20Indobo ya Litiro 201 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
10

Troubleshooting

Spiral-wing dasher churn troubleshooting.

Flow

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11

History and honest limits

**Otis W. Stanford** of Cincinnati, Hamilton County, Ohio, US 28,696, 12 June 1860, "Churn". He claimed the upright tub with the reciprocating rod, the spheroidal dasher and spiral wings fitting the tub. His dasher is wooden; ours is printed in two halves, and the wings' number, twist and every size are ours.

Ibikoresho

11

Ibikoresho bikenewe

13

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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