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Partition Air-Tube Plunger Churn: Cream Rushing Through Branch Tubes Draws Air Down
John O'Neil, Xenia, Ohio · Public domain (expired patent)
Emma

Yaremwe na

Emma

6. Ukwakira 2026SE
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Partition Air-Tube Plunger Churn: Cream Rushing Through Branch Tubes Draws Air Down

O'Neil used the rush of the cream itself to draw air into it. John O'Neil of Xenia, Ohio, received US 7,531, dated 30 July 1850, for an atmospheric churn: a box divided by a movable partition with its lower edge perforated; an air tube down the partition with a bowl at its top, in the lid, holding a spring-closed hinged valve; a horizontal tube at its foot and branch tubes through the partition's lower edge, which "serve the double purpose of breaking the cream as it passes through and of communicating the current of atmosphere to the opposite apartment." Two plungers on a rocking lever, one cut to pass over the air tube, work oppositely. This rung estimates the suction, then prints the partition with its tubes, the valve bowl and the plungers, builds the box and lever, and makes butter.
Hejuru
About 5 hours, plus printing

Amabwiriza

1

The suction

Gupakira ikaye ya Jupyter…
2

Two plungers forcing cream through holes before it

The embedded blueprint throws cream between three chambers. O'Neil uses two, and lets the cream's rush through branch tubes draw air down an air tube.
3

Read US 7,531

"The depression of one, and the same time the elevation of the other causes the cream to be violently rushed through the horizontal tubes d, d, and the holes in the partition from one apartment to the other alternately. The passage of the cream through the tubes d, d, causes a suction of the atmosphere down the pipe b, through the horizontal part of the tube c, to d, d, and thence to the body of cream in each apartment."
4

Print the parts

Print the partition with its air tube, foot tube and branches in one piece, with supports. Blow through the tube's top to check air comes out of both branches. Print the valve bowl, one plunger and one notched plunger. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Ibikoresho by'iyi ntambwe:

Fibere ya PETGFibere ya PETG1 igice

Ibikoresho bikenewe:

Imashini icapa 3D ikoresha umugozi (FDM)Imashini icapa 3D ikoresha umugozi (FDM)
5

Print the partition with its air tube, foot tube and branches

The partition with its air tube, foot tube and branches, printed as step 4 describes.
Dosiye y'IgishushanyoSTLCC0 - Free
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6

Print the valve bowl

The valve bowl, printed as step 4 describes.
Dosiye y'IgishushanyoSTLCC0 - Free
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7

Print the plunger

The plunger, printed as step 4 describes.
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8

Print the notched plunger

The notched plunger, printed as step 4 describes.
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9

Box, partition and valve

Take a food-safe box about 220 × 120 × 180 mm and fit two plywood strips inside the long sides at the middle as grooves, so the partition slides in and out. Drill the lid over the air tube's top and seat the bowl's spigot onto the tube through it. Hinge a small leather flap on the bowl's seat with a light spring, as his, so air passes down but cream cannot rise.

Ibikoresho by'iyi ntambwe:

Ikibindi cyo kubikamo cy'urwego rw'ibiribwaIkibindi cyo kubikamo cy'urwego rw'ibiribwa1 igice
Urupapuro rw'ibiti byometseUrupapuro rw'ibiti byometse1 igice
Umurongo w'uruhuUmurongo w'uruhu1 igice
Igifunga cya silikoneIgifunga cya silikone1 igice

Ibikoresho bikenewe:

Umucumita w'ImigororwaUmucumita w'Imigororwa
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
10

Plungers and lever

Glue a 12 mm hardwood dowel rod in each plunger, the notched one on the side of the air tube. Screw a pine standard to each side of the box at the middle, pass a dowel axle through them and a pine lever, and join each rod to the lever on a loose screw.

Ibikoresho by'iyi ntambwe:

Udukoni tw'ibiti bikomeyeUdukoni tw'ibiti bikomeye1 igice
Ikibaho cy'igiti cya pinusiIkibaho cy'igiti cya pinusi1 igice
Ibitorezo by'imashiniIbitorezo by'imashini1 igice
Umupira w'Impande EsheshatuUmupira w'Impande Esheshatu1 igice
Ikinyabutabire cy'IbitiIkinyabutabire cy'Ibiti1 igice
Uruganda rw'igiti #8 x 1"Uruganda rw'igiti #8 x 1"1 igice

Ibikoresho bikenewe:

Umucumita w'IntokiUmucumita w'Intoki
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Ikusanyirizo ry'ibitoreziIkusanyirizo ry'ibitorezi
11

The patent drawing

US 7,531 drawing sheet, public domain (expired patent).
Intambwe 11 - Image 1
12

Rock and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 1.5 litres. Rock the lever briskly; bubbles should come from the branch tubes. 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.

Ibikoresho by'iyi ntambwe:

Igice cy'ibinure cy'amataIgice cy'ibinure cy'amata1500 ml
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
13

No air, cream in the bowl

Partition air-tube churn troubleshooting.

Flow

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14

History and honest limits

**John O'Neil** of Xenia, Greene County, Ohio, received US 7,531, dated 30 July 1850. His plungers had parts of two sides cut away, leaving about 1½ inches at each corner, "for the purpose of gathering the butter above the dasher." He claimed the construction of the air tubes in combination with the plungers and partition. **Honest limits.** Printed parts and a food-safe box stand in for his; the notebook's pressure drop is a rough estimate. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Ibikoresho

14

Ibikoresho bikenewe

10

Dosiye z'igishushanyo

4

Iki gishushanyo gikora

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Agateganyo

Igisabo cyo gucunda amavuta

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Blueprint zijyanye

Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame

Twin-Plunger Air-Chamber Churn: Two Plungers Throw the Cream Through a Middle Chamber

Twin-Plunger Air-Chamber Churn: Two Plungers Throw the Cream Through a Middle Chamber

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Hollow-Arm Air Churn: A Spinning Dasher That Breathes Air Into the Cream

Hollow-Arm Air Churn: A Spinning Dasher That Breathes Air Into the Cream

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Valved Hollow-Staff Plunger Churn: A Valve at the Top, Air Forced Out at the Foot

Valved Hollow-Staff Plunger Churn: A Valve at the Top, Air Forced Out at the Foot

na TheChefDK

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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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