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Alternating Rocking-Leaf Churn: Half-Cogged Wheels Reverse the Agitator, a Spiral Rocks Its Leaves
John G. Dungan, Steubenville, Ohio · Public domain (expired patent)
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Alternating Rocking-Leaf Churn: Half-Cogged Wheels Reverse the Agitator, a Spiral Rocks Its Leaves

John G. Dungan of Steubenville, Ohio, received US 13,638, dated 9 October 1855, for a churn whose agitator turns alternately one way and the other, driven through two face wheels cogged over part of their faces, while a spiral groove rocks its outer leaves to and from the sides. This rung prints the wheels, pinion, spiral cap and agitator, builds the churn and makes butter.
Juu
About 8 hours, plus printing

Maagizo

1

One turn each way, and the rock

Inapakia daftari la Jupyter…
2

To and fro, before it

Thomson swung his dasher to and fro by a strap; Dungan reverses his with half-cogged wheels.
3

Read US 13,638

"D, operating shaft, to which are secured the wheels F, F', partially cogged on their inner faces, so that the gear of one will engage the pinion p on head of main shaft, at the moment the said pinion leaves the teeth of the other wheel, the number of cogs on each wheel being sufficient to insure the entire revolution of the pinion p"
4

Print the parts

Print two half-cogged wheels, the pinion, the spiral cap, the agitator hub, four outer leaves, the rod head and the step. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Vifaa kwa hatua hii:

Uzi wa PETGUzi wa PETG1 kipande

Zana zinazohitajika:

Printa ya 3D ya nyuzi (FDM)Printa ya 3D ya nyuzi (FDM)
5

Print the half-cogged wheels

The half-cogged wheels, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
6

Print the pinion

The pinion, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
7

Print the spiral cap

The spiral cap, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
8

Print the agitator hub

The agitator hub, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
9

Print the outer leaves

The outer leaves, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
10

Print the rod head

The rod head, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
11

Print the step

The step, printed as step 4 describes.
Faili ya UsanifuSTLCC0 - Free
Pakua modeli
12

Agitator

Cut a 16 mm pipe about 345 mm long and saw a slot down it where the hub sits and one at the top for the arm. Glue the hub low on it and pin the outer leaves at their middles to the hub's lugs with 3 mm rod. Glue the head on the foot of a 4 mm rod, bend its top into a short arm, and drop it in the pipe with the arm out through the top slot; run spring wires from the head through the slots to the leaves' feet.

Vifaa kwa hatua hii:

Bomba la PVCBomba la PVC1 kipande
Ufito wa chuma lainiUfito wa chuma laini1 kipande
Waya wa chuma cha kamaniWaya wa chuma cha kamani1 kipande
Epoksi ya Sehemu MbiliEpoksi ya Sehemu Mbili1 kipande

Zana zinazohitajika:

Msumeno wa chumaMsumeno wa chuma
Tupa ya chumaTupa ya chuma
Kekee cha BetriKekee cha Betri
Seti ya vichimbuziSeti ya vichimbuzi
13

Cover and gearing

Stand the step in a food-grade container about 170 mm across, wider at the foot, and the pipe in it. Make a pine lid with a bridge, slide the spiral cap down the pipe so the arm enters its groove by the straight channel, screw the cap on the bridge, and glue the pinion on the pipe's top. Run a 10 mm square shaft in two standards, a wheel each side of the pinion, cogs opposite, and a crank.

Vifaa kwa hatua hii:

Chombo cha kuhifadhi cha daraja la chakulaChombo cha kuhifadhi cha daraja la chakula1 kipande
Ubao wa msonobariUbao wa msonobari1 kipande
Vijiti vya mbao ngumuVijiti vya mbao ngumu1 kipande
Ufito wa chuma lainiUfito wa chuma laini1 kipande
Skrubu za mashineSkrubu za mashine1 kipande
Skrubu ya mti #8 x inchi 1Skrubu ya mti #8 x inchi 11 kipande
Gundi ya MbaoGundi ya Mbao1 kipande

Zana zinazohitajika:

Msumeno wa mkonoMsumeno wa mkono
Seti ya misumeno ya duaraSeti ya misumeno ya duara
Kekee cha BetriKekee cha Betri
Seti ya bisibisiSeti ya bisibisi
14

The build in 3D

FreeCAD model of this build: the churn cut open to show the hub, inner and outer leaves and spring rods; the hollow shaft with rod d; the spiral cap on its bridge; and the pinion between the two half-cogged face wheels.
Faili ya UsanifuBLENDCC0 - Free
Pakua modeli
15

Crank and churn

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 1.5 litres. Turn the crank steadily one way; the agitator turns, stops, turns back, and its outer leaves rock. 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.
Hatua 15 - Image 1

Vifaa kwa hatua hii:

Malai nzitoMalai nzito1500 ml
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
16

Troubleshooting

Alternating rocking-leaf churn troubleshooting.

Flow

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17

History and honest limits

**John G. Dungan** of Steubenville, Jefferson County, Ohio, US 13,638, 9 October 1855. He claimed giving the outer leaves of an alternately opposite rotating agitator a rocking motion to and from the sides of the churn. He suggested covering the shaft's slots with slides, and rigid jointed rods instead of spring rods. Our sizes, tooth counts and 20 mm climb are ours. FDM prints hold food in their layer lines, so wash well and replace when worn.

Vifaa

14

Zana Zinazohitajika

12

Faili za muundo

8

Mchoro huu unatengeneza

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

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