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Butterfly-Wing Churn: Two Dashers Hinged to an Adjustable Bar Flap Together From One Crank
J. Stubbs (USPTO drawing) · Public domain
Woody

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Woody

9. Novemba 2026NO
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Butterfly-Wing Churn: Two Dashers Hinged to an Adjustable Bar Flap Together From One Crank

Josiah Stubbs of Dublin, Indiana, received US 24,673, dated 5 July 1859, for a churn with two dashers hinged to a central bar like a butterfly's wings. The bar slides on notched stays inside the shell and is set so the cream barely covers it. One crank on the side works both dashers through two rods, one crossing the churn on a slant. Going down, the cream rushes round the dashers' edges against the shell; going up, flanges on the dashers carry cream up and throw it together. This rung builds it in a 20-litre bucket.
Kati
About 6 hours, plus printing

Maagizo

1

Setting the bar for the cream you have

Inapakia daftari la Jupyter…
2

Hinged, flapping dashers, before it

Kelly flapped hinged dashers by swinging the tub. Stubbs keeps the shell still and flaps them from a crank.
3

Read US 24,673

"As the dashers are drawn upwardly, a portion of the fluid will be retained upon them, by means of the flanges (e) and thrown violently together as the dashers reach their upper extremity of motion".
4

Print the flange

A quarter of a dasher's flange e. Print four. PETG, 0.2 mm layers, 40 % infill, 4 walls; wash before first use.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
5

Stays and bar b

Screw two hardwood stays a 24 x 15 mm, 337 mm long, upright inside the bucket on opposite sides, and saw notches a' 6 mm wide and 4 mm deep in their inner faces every 20 mm from 60 to 220 mm up. Cut a hardwood bar b 272 x 20 x 16 mm with a slotted block 44 mm wide at each end to slide on the stays, and fit an M5 set screw c with a wing nut through one block to hold it in a notch.

Vifaa kwa hatua hii:

Ndoo ya Lita 20Ndoo ya Lita 201 kipande
Ubao wa Mti MgumuUbao wa Mti Mgumu1 kipande
Parafujo za mbaoParafujo za mbao6 vipande
Gundi ya MbaoGundi ya Mbao1 kipande
Skrubu za mashineSkrubu za mashine1 kipande
Nati ya mabawaNati ya mabawa1 kipande
Kizibo cha SilikoniKizibo cha Silikoni1 kipande

Zana zinazohitajika:

Msumeno wa mkonoMsumeno wa mkono
PatasiPatasi
Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
Seti ya bisibisiSeti ya bisibisi
Tepi ya kupimiaTepi ya kupimia
6

Dashers d d

Cut two half-discs 244 mm across from 12 mm plywood and trim each to 220 mm along its straight edge. Glue the printed flanges e round their curved edges, standing 15 mm up. Hinge each dasher's straight edge to one side of the bar with two stainless butt hinges, 4 mm clear of the bar. Screw a small hardwood eye block on each dasher 100 mm out from the bar's middle, the right one 30 mm toward the front, the left one 40 mm toward the back.

Vifaa kwa hatua hii:

Bati la mbao za kubandikaBati la mbao za kubandika1 kipande
Uzi wa PETGUzi wa PETG1 kipande
Gundi ya MbaoGundi ya Mbao1 kipande
Bawaba ya mlangoBawaba ya mlango4 vipande
Parafujo za mbaoParafujo za mbao16 vipande
Ubao wa Mti MgumuUbao wa Mti Mgumu1 kipande

Zana zinazohitajika:

Printa ya 3D ya nyuzi (FDM)Printa ya 3D ya nyuzi (FDM)
Msumeno wa KupindaMsumeno wa Kupinda
Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
Sandarusi (karatasi ya kusugua)Sandarusi (karatasi ya kusugua)
Seti ya bisibisiSeti ya bisibisi
7

Crank h k and rods g g'

Drill the bucket's wall 13 mm 315 mm up, 30 mm toward the front, and fit a 12 mm stainless shaft through a hardwood bearing block outside, sealed. Fix a hardwood crank arm h 35 mm between centres on the inner end with a 8 mm pin pointing inward, and a crank handle k outside. Bend two 6 mm stainless rods with an eye at each end: g 185 mm between eyes from the pin to the right dasher, g' 262 mm from the pin across the churn on a slant to the left dasher.

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
Kizibo cha SilikoniKizibo cha Silikoni1 kipande
Skrubu za mashineSkrubu za mashine2 vipande
Nati ya Kufungasha yenye NailoniNati ya Kufungasha yenye Nailoni2 vipande

Zana zinazohitajika:

Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
Kibano cha meza ya kaziKibano cha meza ya kazi
Msumeno wa chumaMsumeno wa chuma
Tupa (Tupa ya Mkono)Tupa (Tupa ya Mkono)
Seti ya bisibisiSeti ya bisibisi
8

The build in 3D

FreeCAD model of this build, the near side of the bucket cut away: the notched stays, bar b, the two hinged dashers with their flanges, the crank inside the wall and the two rods, one crossing on a slant. It was checked at eight crank angles.
Faili ya UsanifuBLENDCC0 - Free
Pakua modeli
9

Churn

Pour in about 8 litres of heavy cream at about 15 °C, checked with the thermometer, and set the bar in the notch the notebook gives so the cream barely covers it. Put the lid on and turn the crank steadily; time it. When the butter comes, lift the bar and dashers out, pour off the buttermilk, wash the butter in cold water until it runs clear, work in a pinch of 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
10

Troubleshooting

Butterfly-wing churn troubleshooting.

Flow

Loading...
11

History and honest limits

**Josiah Stubbs** of Dublin, Wayne County, Indiana, US 24,673, 5 July 1859, "Churn". He claimed working the butterfly wings with a single crank on one side, the rod g' crossing the cylinder on a slant. He gave no sizes or materials: every size, the notches' spacing and the crank's throw are ours.

Vifaa

16

Zana Zinazohitajika

16

Faili za muundo

2

Mchoro huu unatengeneza

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Siagi

Free

198
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Maziwa ya siagi

Free

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

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